anybody who has a simple plan to set up biogas digester from household waste or from our septic tank. Thank you for any reply... Napo

Dear Sir,

Please we are intrested in Biogase plant in to smale scale pls more
deatils

from,
Halalaswamy k.T.
Davanagere, Karnataka

Dear Sirs,
I am an Chemical Engineer from INDONESIA and my name Aries Satriyo.
Would you like to explain for me some small scale Biogas Plant in your village ?
How much of a whole your Biogas Plant in Euro also a charge price to set up them ?
I need your information in detail also your manual operation .

Thank you for your information.
I will send my regard to you and I hope you are always success in all of time.

Your Sincerelly,

Aries Satriyo.

Hi Sirs.

I am working on a biogas system treating human wastes from detention centers. The design adapted for the chamber is a semi-buried fixed-dome type, serving about 500 inmates. The system is composed of the usual inlet tank, the 24 cubic meter digestion chamber and outlet tank.

Toilets are directly connected to the inlet tank while other wastewater (like those from shower areas) are diverted and are not allowed to enter the system. There was no seeding done during the start-up as informed by the jail engineer who worked with my predecessor. (The system was already in place when it was handed over to me) To date, the system is producing gas but is so limited that it will not even reach the gas burner being the end-user device (I guess this has something to do with the gas pressure??).

I am aware that the presence of toxic substances that could enter from the toilets would be harmful to the microbiological process that's why we have taken efforts to educate the inmates for them to be cautious on the use of soaps, detergents and the like and also to limit the amount of water they use for flushing. (but of course we cannot guarantee their compliance, considering we are working with inmates).
We also thought of possible leaks in the system but that we have yet to try testing..( how do you test for leaks anyway?)

I will really appreciate if you can give me some advice on how we can make the system work or trouble shoot the process. Where do we start? I have been receiving negative criticisms on the project and I don't really want to put the project into waste (at least in terms of not being able to generate gas).

Thanks so much

Dear sir,
Iam Yashodhara an Mcom graduate from Bangalore, Iam very much interested in starting up a small scale bio-gas industry from all type of wastes any body can guide me in the same line.
Thanking you.
Yashodhara

Sir,
It seems we are looking for the same thing. Some designs !.
I am about to "have a go", and here is what I know - we all know - of the fundamentals.
Organic substances, if warm and wet, rot giving of gas - horrible smells. Without oxygen - i.e. in a sealed container - much of the gas produced is in fact odourless Methane. So, what is required is a tank into which the organic waste can be put. Allthough this sounds simple, - and it may well be ! - as far as I can see, some ingenuity is required to get the stuff in, without "taking the lid off" which would release the product plus hideous smell. The "ingenuity" that I am about to try is an upright, cylindrical (for simplicity) vessel which contains the charge of waste + water. Inverted into this is a "gasometer" cylinder from which, initiall, the air is allowed to escape as it sinks into the bottom cylinder, or jar.
The whole thing then needs to be maintained at a "warmish" - to be discovered - temperature by sunshine by day and lagging by night, and the gasses produced by the anaerobic bacteria present will accumulate in the AIRTIGHT inverted jar, in classical Chemistry-lab manner. The jar will rise, maintaining the trapped gas pressure constant.
When it looks fullish, a sample can be pumped into a pressure-vessel to play with.
As zorg-biogas.com helpfully point-out, there will be water-vapour and CO2 to get rid-of.
Water is maybe best condensed-out, a process which will happen if the compressed bottle is kept cool, and CO2 reacts with Lime - Calcium hydroxide - to make calcium carbonate, chalk
[qu ote="halirsons"]Dear Sir,

Please we are intrested in Biogase plant in to smale scale pls more
deatils

from,
Halalaswamy k.T.
Davanagere, Karnataka[/quote]

Sir,
It seems we are looking for the same thing. Some designs !.
I am about to "have a go", and here is what I know - we all know - of the fundamentals.
Organic substances, if warm and wet, rot giving of gas - horrible smells. Without oxygen - i.e. in a sealed container - much of the gas produced is in fact odourless Methane. So, what is required is a tank into which the organic waste can be put. Allthough this sounds simple, - and it may well be ! - as far as I can see, some ingenuity is required to get the stuff in, without "taking the lid off" which would release the product plus hideous smell. The "ingenuity" that I am about to try is an upright, cylindrical (for simplicity) vessel which contains the charge of waste + water. Inverted into this is a "gasometer" cylinder from which, initially, the air is allowed to escape as it sinks into the bottom cylinder, or jar.
The whole thing then needs to be maintained at a "warmish" - to be discovered - temperature by sunshine by day and lagging by night, and the gasses produced by the anaerobic bacteria present will accumulate in the AIRTIGHT inverted jar, in classical Chemistry-lab manner. The jar will rise, maintaining the trapped gas pressure constant.
When it looks fullish, a sample can be pumped into a pressure-vessel to play with.
As zorg-biogas.com helpfully point-out, there will be water-vapour and CO2 to get rid-of.
Water is maybe best condensed-out, a process which will happen if the compressed bottle is kept cool, and CO2 reacts with Lime - Calcium hydroxide - to make calcium carbonate, chalk

Hi
You gave very little information about your plant. Anyway I will try to give you some help.

i) If you have a crust at the top of the chamber it will stop the bacteria from doing its function. So you need to stir the lot up if this is the case.
ii) If the PH is to low say less than 6.8 it will stop working as well. needs to be 7.2 or there about. ad some bicarbonate to raise yhe PH if it is to low.
iii) If you have air in the system it will also not work. It take about 3 weeks for the process to start from scratch.
iv) You might feed the digester to much. When the system is working you must never increase the feed more than 30% from what it was on the previous day.
v) Go to your local wastewater treatment plant and get a bucket of bacteria to start your system of.
vii) Temperature needs to be 34 deg C at least.

Hope this will help.

Albert Glover
Strelitzia Technologies
South Africa


Hi Sirs.

I am working on a biogas system treating human wastes from detention centers. The design adapted for the chamber is a semi-buried fixed-dome type, serving about 500 inmates. The system is composed of the usual inlet tank, the 24 cubic meter digestion chamber and outlet tank.

Toilets are directly connected to the inlet tank while other wastewater (like those from shower areas) are diverted and are not allowed to enter the system. There was no seeding done during the start-up as informed by the jail engineer who worked with my predecessor. (The system was already in place when it was handed over to me) To date, the system is producing gas but is so limited that it will not even reach the gas burner being the end-user device (I guess this has something to do with the gas pressure??).

I am aware that the presence of toxic substances that could enter from the toilets would be harmful to the microbiological process that's why we have taken efforts to educate the inmates for them to be cautious on the use of soaps, detergents and the like and also to limit the amount of water they use for flushing. (but of course we cannot guarantee their compliance, considering we are working with inmates).
We also thought of possible leaks in the system but that we have yet to try testing..( how do you test for leaks anyway?)

I will really appreciate if you can give me some advice on how we can make the system work or trouble shoot the process. Where do we start? I have been receiving negative criticisms on the project and I don't really want to put the project into waste (at least in terms of not being able to generate gas).

Thanks so much

Thanks for sharing!!


Power Plant Maintenance

HI,

The whole thing then needs to be maintained at a "warmish" - to be discovered - temperature by sunshine by day and lagging by night, and the gasses produced by the anaerobic bacteria present will accumulate in the AIRTIGHT inverted jar, in classical Chemistry-lab manner. The jar will rise, maintaining the trapped gas pressure constant.

Power Plant Developers