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Septic Tank: detecting height of sludge-level?
Many thanks to all those who have so kindly offered their thoughts on
how frequently to clean a septic tank (my posting below: "Septic Tank: how often to clean"). I should say that I posted the question partly because the previous owner admitted that he and his wife were, forgive me for mentioning it, "very anal"! And since we've been here we have discovered this admission to probably have been true. On the day we moved in, even, they were cleaning and scrubbing every hidden corner until an hour before our delivery truck arrived! When we viewed the house we noted that their "detergent cupboard" was, let's say, unusually well stocked! Like some people who have replied to my posting, we have come from the side of a Welsh "mountain" (Welsh mountain = hill). There we had a massive concrete septic tank embedded in the ground but it was also somewhat at the top of a "cliff" so that it soaked away into land & a stream about 30 feet below. Quite a "pull". On moving I asked the owner about frequency of cleaning the tank and he said, "Don't touch it, till you smell it, and you won't smell it till it starts bubbling through the sides of the lid!" He was such a know-all I believed him and we never got the thing cleaned. When we were selling the place our buyer wanted to know about the septic tank and I took off the lid and showed him the contents and repeated what I had been told! Thankfully, the "cake" on top of the contents was well below the lid! Also thankfully, I could see that "clear" liquid was departing through the outlet pipe. What I did not know was how thick the layer of "clear" liquid was! Or, in other words, how high the sludge level was! For all I knew it could have been very close to outlet pipe. On moving into this new property with a similar though smaller concrete septic tank embedded in the ground, I did a bit of research and learnt that waiting for the contents to start bubbling up round the lid was utterly foolish and so got back to my buyer and corrected the information I had given him and advised him strongly to have the tank cleaned as soon as possible. Anyway . . . In addition to carefully reading all replies to my post I have also done some research. It appears that, yes, tanks can be of different sizes & involve more than one chamber but essentially they all operate on the same principle. This principle is as follows: 1. All your waste flows into the tank via an opening fairly high up the side of the tank. 2. The "heavy stuff" falls to the bottom. 3. The outlet pipe is roughly the same height as the inlet pipe and usually on the other side of the tank. Only the "light stuff", i.e. "clear" liquid should ever flow out of the tank through this pipe and into the soakaway / gravel conduits / "herringbone" or what-have-you. 4. A good level of bacteria in the tank works on the "heavy stuff" at the bottom of the tank and assists in continually reducing it. 5. However, sooner or later the level of the "heavy stuff", i.e. the "sludge" at the bottom of all tanks, WILL build up sufficiently to reach the outlet pipe UNLESS you intervene and reduce the sludge level, i.e. have most of it sucked out. 6. If the sludge DOES get as high as the outlet pipe and starts to exit the tank via this pipe it will move off into the soakaway land. No problem will manifest itself for some time. Eventually however the land will become clogged with the sludge and your only option then will be to build a new septic tank on a separate and clean piece of land. Expensive and possibly difficult if not impossible because of the geographical requirements. So, from all of this, it seems pretty clear to me that one needs to devise a way of checking on one's sludge level! Does anyone do that? I'm thinking of making a "sludge-detector" by taking a long pole and fixing a fairly large flat "plate" (piece of board) to the end of it. If I were to then slowly lower this down through the top level of "clear" liquid I ought to be able to feel when I hit the sludge level. If it is a good way below the outlet pipe, then all is well. If not, then a clean is in order. What do you think? Yes, I know I should just make the "detector" and go test it . . . but who wants to go outside in this awful weather and start poking around in "heavy stuff" if it might be a complete waste of time? Eddy. P.S. By the way, when I said a commercial cleaner round these parts charges £120 I meant £120 inclusive of VAT. They're all roughly the same price round here and, no, the council here in this county doesn't offer a septic tank service. |
#2
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Septic Tank: detecting height of sludge-level?
"Eddy Bentley" wrote in message ... Many thanks to all those who have so kindly offered their thoughts on how frequently to clean a septic tank (my posting below: "Septic Tank: how often to clean"). I should say that I posted the question partly because the previous owner admitted that he and his wife were, forgive me for mentioning it, "very anal"! And since we've been here we have discovered this admission to probably have been true. On the day we moved in, even, they were cleaning and scrubbing every hidden corner until an hour before our delivery truck arrived! When we viewed the house we noted that their "detergent cupboard" was, let's say, unusually well stocked! Like some people who have replied to my posting, we have come from the side of a Welsh "mountain" (Welsh mountain = hill). There we had a massive concrete septic tank embedded in the ground but it was also somewhat at the top of a "cliff" so that it soaked away into land & a stream about 30 feet below. Quite a "pull". On moving I asked the owner about frequency of cleaning the tank and he said, "Don't touch it, till you smell it, and you won't smell it till it starts bubbling through the sides of the lid!" He was such a know-all I believed him and we never got the thing cleaned. When we were selling the place our buyer wanted to know about the septic tank and I took off the lid and showed him the contents and repeated what I had been told! Thankfully, the "cake" on top of the contents was well below the lid! Also thankfully, I could see that "clear" liquid was departing through the outlet pipe. What I did not know was how thick the layer of "clear" liquid was! Or, in other words, how high the sludge level was! For all I knew it could have been very close to outlet pipe. On moving into this new property with a similar though smaller concrete septic tank embedded in the ground, I did a bit of research and learnt that waiting for the contents to start bubbling up round the lid was utterly foolish and so got back to my buyer and corrected the information I had given him and advised him strongly to have the tank cleaned as soon as possible. Anyway . . . In addition to carefully reading all replies to my post I have also done some research. It appears that, yes, tanks can be of different sizes & involve more than one chamber but essentially they all operate on the same principle. This principle is as follows: 1. All your waste flows into the tank via an opening fairly high up the side of the tank. 2. The "heavy stuff" falls to the bottom. 3. The outlet pipe is roughly the same height as the inlet pipe and usually on the other side of the tank. Only the "light stuff", i.e. "clear" liquid should ever flow out of the tank through this pipe and into the soakaway / gravel conduits / "herringbone" or what-have-you. 4. A good level of bacteria in the tank works on the "heavy stuff" at the bottom of the tank and assists in continually reducing it. 5. However, sooner or later the level of the "heavy stuff", i.e. the "sludge" at the bottom of all tanks, WILL build up sufficiently to reach the outlet pipe UNLESS you intervene and reduce the sludge level, i.e. have most of it sucked out. 6. If the sludge DOES get as high as the outlet pipe and starts to exit the tank via this pipe it will move off into the soakaway land. No problem will manifest itself for some time. Eventually however the land will become clogged with the sludge and your only option then will be to build a new septic tank on a separate and clean piece of land. Expensive and possibly difficult if not impossible because of the geographical requirements. So, from all of this, it seems pretty clear to me that one needs to devise a way of checking on one's sludge level! Does anyone do that? I'm thinking of making a "sludge-detector" by taking a long pole and fixing a fairly large flat "plate" (piece of board) to the end of it. If I were to then slowly lower this down through the top level of "clear" liquid I ought to be able to feel when I hit the sludge level. If it is a good way below the outlet pipe, then all is well. If not, then a clean is in order. What do you think? Yes, I know I should just make the "detector" and go test it . . . but who wants to go outside in this awful weather and start poking around in "heavy stuff" if it might be a complete waste of time? Eddy. P.S. By the way, when I said a commercial cleaner round these parts charges £120 I meant £120 inclusive of VAT. They're all roughly the same price round here and, no, the council here in this county doesn't offer a septic tank service. Well done Eddy. Wonderful posting with a lot of research Best wishes Mike P.S. I think you Sludge Level with a bit of board would work to a certain degree, but not tooooooooooooooooo accurate because I feel that the board would indeed 'sink' into the solid/sludge, but with practice I would expect you to be able to 'feel' when it started to go into it. -- www.rnshipmates.co.uk for ALL Royal Navy Association matters www.rneba.org.uk. The Royal Naval Electrical Branch Association. 'THE' Association to find your ex-Greenie mess mates. www.iowtours.com for all ex-Service Reunions. More being added regularly "Navy Days" Portsmouth 25th - 27th July 2008. RN Shipmates will be there. |
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Septic Tank: detecting height of sludge-level?
On 5 Dec, 14:12, "'Mike'" wrote:
"Eddy Bentley" wrote in message ... Many thanks to all those who have so kindly offered their thoughts on how frequently to clean a septic tank (my posting below: "Septic Tank: how often to clean"). I should say that I posted the question partly because the previous owner admitted that he and his wife were, forgive me for mentioning it, "very anal"! And since we've been here we have discovered this admission to probably have been true. On the day we moved in, even, they were cleaning and scrubbing every hidden corner until an hour before our delivery truck arrived! When we viewed the house we noted that their "detergent cupboard" was, let's say, unusually well stocked! Like some people who have replied to my posting, we have come from the side of a Welsh "mountain" (Welsh mountain = hill). There we had a massive concrete septic tank embedded in the ground but it was also somewhat at the top of a "cliff" so that it soaked away into land & a stream about 30 feet below. Quite a "pull". On moving I asked the owner about frequency of cleaning the tank and he said, "Don't touch it, till you smell it, and you won't smell it till it starts bubbling through the sides of the lid!" He was such a know-all I believed him and we never got the thing cleaned. When we were selling the place our buyer wanted to know about the septic tank and I took off the lid and showed him the contents and repeated what I had been told! Thankfully, the "cake" on top of the contents was well below the lid! Also thankfully, I could see that "clear" liquid was departing through the outlet pipe. What I did not know was how thick the layer of "clear" liquid was! Or, in other words, how high the sludge level was! For all I knew it could have been very close to outlet pipe. On moving into this new property with a similar though smaller concrete septic tank embedded in the ground, I did a bit of research and learnt that waiting for the contents to start bubbling up round the lid was utterly foolish and so got back to my buyer and corrected the information I had given him and advised him strongly to have the tank cleaned as soon as possible. Anyway . . . In addition to carefully reading all replies to my post I have also done some research. It appears that, yes, tanks can be of different sizes & involve more than one chamber but essentially they all operate on the same principle. This principle is as follows: 1. All your waste flows into the tank via an opening fairly high up the side of the tank. 2. The "heavy stuff" falls to the bottom. 3. The outlet pipe is roughly the same height as the inlet pipe and usually on the other side of the tank. Only the "light stuff", i.e. "clear" liquid should ever flow out of the tank through this pipe and into the soakaway / gravel conduits / "herringbone" or what-have-you. 4. A good level of bacteria in the tank works on the "heavy stuff" at the bottom of the tank and assists in continually reducing it. 5. However, sooner or later the level of the "heavy stuff", i.e. the "sludge" at the bottom of all tanks, WILL build up sufficiently to reach the outlet pipe UNLESS you intervene and reduce the sludge level, i.e. have most of it sucked out. 6. If the sludge DOES get as high as the outlet pipe and starts to exit the tank via this pipe it will move off into the soakaway land. No problem will manifest itself for some time. Eventually however the land will become clogged with the sludge and your only option then will be to build a new septic tank on a separate and clean piece of land. Expensive and possibly difficult if not impossible because of the geographical requirements. So, from all of this, it seems pretty clear to me that one needs to devise a way of checking on one's sludge level! Does anyone do that? I'm thinking of making a "sludge-detector" by taking a long pole and fixing a fairly large flat "plate" (piece of board) to the end of it. If I were to then slowly lower this down through the top level of "clear" liquid I ought to be able to feel when I hit the sludge level. If it is a good way below the outlet pipe, then all is well. If not, then a clean is in order. What do you think? Yes, I know I should just make the "detector" and go test it . . . but who wants to go outside in this awful weather and start poking around in "heavy stuff" if it might be a complete waste of time? Eddy. P.S. By the way, when I said a commercial cleaner round these parts charges £120 I meant £120 inclusive of VAT. They're all roughly the same price round here and, no, the council here in this county doesn't offer a septic tank service. Well done Eddy. Wonderful posting with a lot of research Best wishes Mike P.S. I think you Sludge Level with a bit of board would work to a certain degree, but not tooooooooooooooooo accurate because I feel that the board would indeed 'sink' into the solid/sludge, but with practice I would expect you to be able to 'feel' when it started to go into it. --www.rnshipmates.co.ukfor ALL Royal Navy Association matterswww.rneba.org..uk. The Royal Naval Electrical Branch Association. 'THE' Association to find your ex-Greenie mess mates.www.iowtours.comfor all ex-Service Reunions. More being added regularly "Navy Days" Portsmouth 25th - 27th July 2008. RN Shipmates will be there. In the days of my youth we lived in the country outside Hastings, and every 2 or 3 years we would dig a good trench 2 ft deep and the width of the veg patch, the "Sludge" from the septic tank would then be brought out by the bucket full and tipped into said trench, This was then covered with the soil and the crop of runner beans we grew was first class. David Hill Abacus Nurseries |
#4
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Septic Tank: detecting height of sludge-level?
'Mike' wrote:
P.S. I think you Sludge Level with a bit of board would work to a certain degree, but not tooooooooooooooooo accurate because I feel that the board would indeed 'sink' into the solid/sludge, but with practice I would expect you to be able to 'feel' when it started to go into it. Yes, getting the hang of when one had penetrated to top of the sludge would indeed probably take practice. Hmmm, an art I never contemplated I would wish to become proficient at! :-) Eddy. |
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Septic Tank: detecting height of sludge-level?
Dave Hill wrote:
In the days of my youth we lived in the country outside Hastings, and every 2 or 3 years we would dig a good trench 2 ft deep and the width of the veg patch, the "Sludge" from the septic tank would then be brought out by the bucket full and tipped into said trench, This was then covered with the soil and the crop of runner beans we grew was first class. But would I be right in think, David, it was a job you weren't particularly keen on? :-) When we lived in West Wales we had a stream divided up into six ponds and six waterfalls. All very beautiful but during the rains of autumn, winter, and spring the stream brought down silt, gravel, and twigs from the hill further up and so every summer one of my jobs was to pump out all the water from each pond and then get in there and fork out the sludge which by then had long been decomposing (full of autumn leaves). The stink was horrendous. The contents of a septic tank must be worse? I'll leave the extraction to the jolly young chap who apparently does all the houses in this area. Eddy. |
#6
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Septic Tank: detecting height of sludge-level?
"Eddy Bentley" wrote in message ... Many thanks to all those who have so kindly offered their thoughts on how frequently to clean a septic tank (my posting below: "Septic Tank: how often to clean"). I should say that I posted the question partly because the previous owner admitted that he and his wife were, forgive me for mentioning it, "very anal"! And since we've been here we have discovered this admission to probably have been true. On the day we moved in, even, they were cleaning and scrubbing every hidden corner until an hour before our delivery truck arrived! When we viewed the house we noted that their "detergent cupboard" was, let's say, unusually well stocked! Like some people who have replied to my posting, we have come from the side of a Welsh "mountain" (Welsh mountain = hill). There we had a massive concrete septic tank embedded in the ground but it was also somewhat at the top of a "cliff" so that it soaked away into land & a stream about 30 feet below. Quite a "pull". On moving I asked the owner about frequency of cleaning the tank and he said, "Don't touch it, till you smell it, and you won't smell it till it starts bubbling through the sides of the lid!" He was such a know-all I believed him and we never got the thing cleaned. When we were selling the place our buyer wanted to know about the septic tank and I took off the lid and showed him the contents and repeated what I had been told! Thankfully, the "cake" on top of the contents was well below the lid! Also thankfully, I could see that "clear" liquid was departing through the outlet pipe. What I did not know was how thick the layer of "clear" liquid was! Or, in other words, how high the sludge level was! For all I knew it could have been very close to outlet pipe. On moving into this new property with a similar though smaller concrete septic tank embedded in the ground, I did a bit of research and learnt that waiting for the contents to start bubbling up round the lid was utterly foolish and so got back to my buyer and corrected the information I had given him and advised him strongly to have the tank cleaned as soon as possible. Anyway . . . In addition to carefully reading all replies to my post I have also done some research. It appears that, yes, tanks can be of different sizes & involve more than one chamber but essentially they all operate on the same principle. This principle is as follows: 1. All your waste flows into the tank via an opening fairly high up the side of the tank. 2. The "heavy stuff" falls to the bottom. 3. The outlet pipe is roughly the same height as the inlet pipe and usually on the other side of the tank. Only the "light stuff", i.e. "clear" liquid should ever flow out of the tank through this pipe and into the soakaway / gravel conduits / "herringbone" or what-have-you. 4. A good level of bacteria in the tank works on the "heavy stuff" at the bottom of the tank and assists in continually reducing it. 5. However, sooner or later the level of the "heavy stuff", i.e. the "sludge" at the bottom of all tanks, WILL build up sufficiently to reach the outlet pipe UNLESS you intervene and reduce the sludge level, i.e. have most of it sucked out. 6. If the sludge DOES get as high as the outlet pipe and starts to exit the tank via this pipe it will move off into the soakaway land. No problem will manifest itself for some time. Eventually however the land will become clogged with the sludge and your only option then will be to build a new septic tank on a separate and clean piece of land. Expensive and possibly difficult if not impossible because of the geographical requirements. So, from all of this, it seems pretty clear to me that one needs to devise a way of checking on one's sludge level! Does anyone do that? I'm thinking of making a "sludge-detector" by taking a long pole and fixing a fairly large flat "plate" (piece of board) to the end of it. If I were to then slowly lower this down through the top level of "clear" liquid I ought to be able to feel when I hit the sludge level. If it is a good way below the outlet pipe, then all is well. If not, then a clean is in order. What do you think? Yes, I know I should just make the "detector" and go test it . . . but who wants to go outside in this awful weather and start poking around in "heavy stuff" if it might be a complete waste of time? Eddy. P.S. By the way, when I said a commercial cleaner round these parts charges £120 I meant £120 inclusive of VAT. They're all roughly the same price round here and, no, the council here in this county doesn't offer a septic tank service. The guy who empties mine charges 90 with no VAT. His story is that he has a competitor who charges 120 including VAT. He claims that the difference is that the competitor rods one of the drains making the job VATable. |
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Septic Tank: detecting height of sludge-level?
Graham Harrison wrote:
The guy who empties mine charges 90 with no VAT. His story is that he has a competitor who charges 120 including VAT. He claims that the difference is that the competitor rods one of the drains making the job VATable. 90 with no VAT. Great. But I guess you're not where I am, Shropshire? Eddy. |
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Septic Tank: detecting height of sludge-level?
Chris Hogg wrote:
The sludge in my tank is much too soft to offer resistance to a board as you describe, especially as it will be trying to float if it's wood. In the past I've gently lowered a long bamboo into the tank until it touches bottom. Then _slowly_ withdraw it. The bottom end of the bamboo comes out black along its length where the sludge sticks, to the depth of the sludge. If you pull out the bamboo too quickly, the sludge can wash off. Wash hands after use! Thanks, Chris. And the rougher the bamboo the better, so the sludge sticks to it? No need for the board business, then. (I often go into overkill.) Eddy. |
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Septic Tank: detecting height of sludge-level?
On Dec 6, 9:56 am, Eddy Bentley
wrote: Chris Hogg wrote: The sludge in mytankis much too soft to offer resistance to a board as you describe, especially as it will be trying to float if it's wood. In the past I've gently lowered a long bamboo into thetank until it touches bottom. Then _slowly_ withdraw it. The bottom end of the bamboo comes out black along its length where the sludge sticks, to the depth of the sludge. If you pull out the bamboo too quickly, the sludge can wash off. Wash hands after use! Thanks, Chris. And the rougher the bamboo the better, so the sludge sticks to it? No need for the board business, then. (I often go into overkill.) Eddy. PerryOne I'm not to sure how this works, this is my first blog! Hope it provides some useful information. My experience of living with our septic tank is: With two of us using it. It never seems to fill up I measure it every month and it remains static. Septic tanks work by anaerobic process of de -composition turning our toilet into methane gas. Our toilet is 70% water so the solids are very little and after process they more or less disappear.(see below) The system works by separation, the oils and light things like grease float to the top, under this is a layer of water based liquids with a suspension of tiny solids that gradually fall to the bottom, to de- compose, at the bottom the compact sludge. The key thing here is the quantity of oil that you pour down the kitchen sink, over time the build up of oil in the top of the tank will result in neat oil flowing into the drain field and spoiling it. All oils should be collected and placed in the dustbin. Things like frying pans and other oily/greasy kitchen things should be wiped dry with paper towels prior to washing and the towels dropped in the waste bin. Restaurants, hotels and similar who do a lot of cooking find it helpful to fit a grease/oil trap between the sink and tank. Interesting enough the septic tank was invented by a Frenchman John Louis Maura's who in the 1860's build a brick pond. On opening it after 12 years he was surprised to find it almost empty. John patented his invention on the 2/9/1881. If you look on the net you will find that there are many people in the USA would have not emptied their septic tanks for over 30 years and yes like mine fitted in 1985 they a still OK and going strong and trouble free, free flowing clear liquid and a nice crust on the top. In some States you are required to empty your tank every 3 to five years. In the UK the recommended period is every year, this is trotted out regardless of the size of tank and drain field or the number of people using it. Or indeed if it is used or not! Experience suggests that the longer the time the suspended solids have to settle and the larger the volume of free water/liquid the better the tank works. One could say that the timing of the days events and the order of process will have an effect. At the same time while the licensed tank emptying people would like to make lots of money emptying your tank every three months or so, in practice waiting until you have a minimum of 30cms of clear water/liquid on the top of the sludge seems to work. However, keep in mind the build up of oil/grease if your housekeeping is not up to standard. It is a good idea to manufacture a pole with a plastic bottle on the end that can be passed down inside the tank to ascertain the remaining space on top of the sludge. The secret of longevity is : Control the things you put into the tank. Keep in mind that the process requires and generates its own heat, avoid letting cold rainwater get into the tank, expect the process to slow in the cold of winter and to flourish in the warmth of summer. It is good practice to limit the amount and volume of cold water entering the tank, as large volumes of water will wash the suspended solids through the system into the drain field and stop it from working. It will also come to a halt when it is not used for a time and then start up again when brought back into use. Do not put salt into the tank it is an antiseptic and salt will slow the process and in time kill your drain field. Do not put cooking oil, food or scraps off the table, or from food preparation down the sink as part of washing up. Do not put paper hankies, sanitary towels condoms, cat litter or anything else down the toilet. Do not put bleach or formaldehyde or any other chemicals or oils or paint into the tank. Think about the things you put into the tank and avoid anything that could possibly block the drain field Just use it to process your toilet waste and it will go on for years. Kindly note: The above blog is the result of experience and includes information gathered from the web over a number of years. I found it very difficult to find information of a specific nature in the UK. The manufacturers of septic tanks seem shy on quoting/providing information. Other than the most simple illustrations. There seems to be a move towards promoting tanks with high running costs, whereas you can see that from the very first concept in 1860 the simple tank does the job and once installed has little or no further cost. |
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Septic Tank: detecting height of sludge-level?
"PerryOne" wrote in message ... On Dec 6, 9:56 am, Eddy Bentley wrote: Chris Hogg wrote: The sludge in mytankis much too soft to offer resistance to a board as you describe, especially as it will be trying to float if it's wood. In the past I've gently lowered a long bamboo into thetank until it touches bottom. Then _slowly_ withdraw it. The bottom end of the bamboo comes out black along its length where the sludge sticks, to the depth of the sludge. If you pull out the bamboo too quickly, the sludge can wash off. Wash hands after use! Thanks, Chris. And the rougher the bamboo the better, so the sludge sticks to it? No need for the board business, then. (I often go into overkill.) Eddy. PerryOne I'm not to sure how this works, this is my first blog! Hope it provides some useful information. My experience of living with our septic tank is: With two of us using it. It never seems to fill up I measure it every month and it remains static. Septic tanks work by anaerobic process of de -composition turning our toilet into methane gas. Our toilet is 70% water so the solids are very little and after process they more or less disappear.(see below) The system works by separation, the oils and light things like grease float to the top, under this is a layer of water based liquids with a suspension of tiny solids that gradually fall to the bottom, to de- compose, at the bottom the compact sludge. The key thing here is the quantity of oil that you pour down the kitchen sink, over time the build up of oil in the top of the tank will result in neat oil flowing into the drain field and spoiling it. All oils should be collected and placed in the dustbin. Things like frying pans and other oily/greasy kitchen things should be wiped dry with paper towels prior to washing and the towels are best placed in your compost bin where the paper and oils can be broken down by natural processes. rob |
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Septic Tank: detecting height of sludge-level?
"PerryOne" wrote in message ... .... The key thing here is the quantity of oil that you pour down the kitchen sink, over time the build up of oil in the top of the tank will result in neat oil flowing into the drain field and spoiling it. All oils should be collected and placed in the dustbin. Things like frying pans and other oily/greasy kitchen things should be wiped dry with paper towels prior to washing and the towels dropped in the waste bin. Why on Earth would anyone want to put fat or oil down the drain? Mary |
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Septic Tank: detecting height of sludge-level?
On Sat, 08 Dec 2007 23:51:55 +0100, Martin wrote:
Why on Earth would anyone want to put fat or oil down the drain? because they do. Out of ignorance. Does anyone keep a bowl or dripping in the fridge any more? The fat was liquid when I poured it down... -- Cheers Dave. pam is missing e-mail |
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Septic Tank: detecting height of sludge-level?
"Dave Liquorice" wrote in message ll.net... On Sat, 08 Dec 2007 23:51:55 +0100, Martin wrote: Why on Earth would anyone want to put fat or oil down the drain? because they do. Out of ignorance. Does anyone keep a bowl or dripping in the fridge any more? I do, but we rarely fry food. I have a fridge specially for sheep fat. The fat was liquid when I poured it down... Come on, Dave, you know more about physics than to do such a silly thing :-) Caravanners are always complaining about blockages caused by fat but they carry on putting it down their wastes. Mad. Mary |
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Septic Tank: detecting height of sludge-level?
On Sun, 9 Dec 2007 11:48:24 -0000, Mary Fisher wrote:
The fat was liquid when I poured it down... Come on, Dave, you know more about physics than to do such a silly thing :-) I do, you do, but I expect a significant number of the population don't. Hence the reference to dripping in the fridge. If you have never seen what happens to the "juices" from a roast once they go cold you won't have made the connection, even then I expect people will think the hot water will wash it away, whcih to some extent it will but not completely... -- Cheers Dave. pam is missing e-mail |
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Septic Tank: detecting height of sludge-level?
"Dave Liquorice" wrote in message ll.net... On Sun, 9 Dec 2007 11:48:24 -0000, Mary Fisher wrote: The fat was liquid when I poured it down... Come on, Dave, you know more about physics than to do such a silly thing :-) I do, you do, but I expect a significant number of the population don't. Hence the reference to dripping in the fridge. If you have never seen what happens to the "juices" from a roast once they go cold you won't have made the connection, even then I expect people will think the hot water will wash it away, whcih to some extent it will but not completely... The watery juice from a roast is delicious gravy. The fat content is delicious but not gravy. If left unattended the solid particles will grow hair. Baldies - don't get excited :-) Mary -- Cheers Dave. pam is missing e-mail |
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motion-detecting owl? | Edible Gardening | |||
[IBC] Detecting Fungus gnats | Bonsai | |||
Septic tank pollution testing. | United Kingdom |