And this graphic, from the ADN article linked to above...
Search found 302 matches
- Thu Feb 08, 2007 6:07 pm
- Forum: Biofilter
- Topic: Does anyone know method to recycling sewage to drinking wate
- Replies: 7
- Views: 29696
- Thu Feb 08, 2007 6:03 pm
- Forum: Biofilter
- Topic: Does anyone know method to recycling sewage to drinking wate
- Replies: 7
- Views: 29696
- Thu Feb 08, 2007 5:17 pm
- Forum: Biofilter
- Topic: Does anyone know method to recycling sewage to drinking wate
- Replies: 7
- Views: 29696
Here's a drawing of a subsurface root-zone filter (from George Tchobanoglous -- but I can't find the cite right now. Will add it when I find it...) similar to mine -- but with some variations. Mine is more linear and plug-flow, different plant selection, etc. But same basic idea... http://biorealis....
- Thu Feb 08, 2007 4:54 pm
- Forum: Biofilter
- Topic: details of Bobs drain field
- Replies: 4
- Views: 23070
My experince with scaling activates suldge and fixed film reactor systems is that they scale very well until the less forceful hydraulics associated with low flow changes the influent distribution and reactor hydraulics. Pliot activated sludge reators can be on the order of gallons. Fixed film pilo...
- Thu Feb 08, 2007 4:33 pm
- Forum: Biofilter
- Topic: details of Bobs drain field
- Replies: 4
- Views: 23070
By the way to you know how much air your bubbling through the cistern. If your concerned about the energy cost, my experience sugguests the could go from continious to intermittent areation. I don't have the specs at hand, Rick, but it's really small -- a 6-watt aquarium air pump -- just enough flo...
- Tue Feb 06, 2007 5:22 pm
- Forum: Biofilter
- Topic: details of Bobs drain field
- Replies: 4
- Views: 23070
Your Photo seems to inciate that the water fall from the constructed wetland to the pond. The waterfall is not part of the pond/wetland system. It is part of a secondary system which is primarily aesthetic (a lower pond, not shown, and flowing stream fed by recirc pump in pond), but which can also ...
- Tue Feb 06, 2007 1:29 pm
- Forum: Biofilter
- Topic: Does anyone know method to recycling sewage to drinking wate
- Replies: 7
- Views: 29696
{this is an edited copy of a private message sent to Rick, responding to similar questions} Hi Rick, I think the answers to your questions are yes and no. On the one hand, yes, there is a wealth of information available that a generally knowledgeable person could put together to design a working sys...
- Mon Jan 08, 2007 2:46 pm
- Forum: General Catchall
- Topic: Welcome
- Replies: 2
- Views: 21152
- Mon Oct 16, 2006 11:43 am
- Forum: Anaerobic Digester
- Topic: testing feedstock
- Replies: 2
- Views: 13859
Very cool experimenting! Keep us informed. Here is a question....How best to test the gas to see if it is methane. I suppose you just light it, but is that safe with a cubic foot of the stuff at the end of the plastic tube? There are a couple of things you can do to make it safer. Use a real burner ...
- Thu Sep 28, 2006 9:58 am
- Forum: Composting Toilet
- Topic: Mail order suppliers for earthworms
- Replies: 0
- Views: 26558
Mail order suppliers for earthworms
I found these sources by googling "worm farm" http://www.bluebellyfarm.com/ http://www.nyworms.com/earthworms.htm http://www.wormman.com/pd_red.cfm http://www.happydranch.com/61.html http://www.kazarie.com/ http://wormyworms.com/ Prices seem to average about $20-25 per pound of redworms ( eisenia fo...
- Sat Sep 16, 2006 2:50 pm
- Forum: Anaerobic Digester
- Topic: 2 answers 4 2 ideas?
- Replies: 5
- Views: 11665
Further explanation of my earlier question (that you thought might have been facetious). I wonder which came first, the nitrogenous sediment, or the organisms that feed on it. In the natural world, when one wants to know something about the organisms that live in any particular environment, usually ...
- Sat Sep 16, 2006 11:38 am
- Forum: Anaerobic Digester
- Topic: 2 answers 4 2 ideas?
- Replies: 5
- Views: 11665
i honestly can't tell if your being facetious or not No, not being facetious, but probably displaying my ignorance. ...but continued research on the web seems to indicate that the methanogens seem to need nitrates. Yes, of course -- which is implied in the need for proper C/N balance. I don't know ...
- Thu Sep 14, 2006 12:35 pm
- Forum: Anaerobic Digester
- Topic: AD in Puerto Rico
- Replies: 6
- Views: 17917
- Thu Sep 14, 2006 12:22 pm
- Forum: Anaerobic Digester
- Topic: 2 answers 4 2 ideas?
- Replies: 5
- Views: 11665
Hi Qcks, Very interesting questions & ideas. Often times people describe a "scum" that accumulates within an anaerobic digester. What is the composition of this scum? Is it organic waste or something else? if it is an organic, is fiberous material or is closer to a lipid? If it's a lipid, have there...
- Wed Aug 16, 2006 8:27 am
- Forum: Anaerobic Digester
- Topic: Before I start building...
- Replies: 4
- Views: 10116
I don't have line power and my solar panels provide only what I need in the winter months. That eliminates the heat tape idea. Yeah, the only reason I have heat tape shown is for testing the prototype. I agree, using electricity for low grade space heat is a bad idea even in principle -- a misuse o...
- Sat Aug 12, 2006 9:57 am
- Forum: Anaerobic Digester
- Topic: A system for my farm in Brasil
- Replies: 1
- Views: 8945
Hi, Ligia,
Sure, there shouldn't be any problem mixing wastes from different animals -- and vegetable waste. Have you done preliminary sizing for your system? (You can use the digester calculator for this.)
Sure, there shouldn't be any problem mixing wastes from different animals -- and vegetable waste. Have you done preliminary sizing for your system? (You can use the digester calculator for this.)
- Sat Aug 12, 2006 9:51 am
- Forum: Anaerobic Digester
- Topic: Before I start building...
- Replies: 4
- Views: 10116
Hi Mark, Welcome. How big a system are talking about? Have you done preliminary sizing? You will find some odds and ends on different digester design ideas on this forum, or check out these drawings and photos of one design. It's one I built a few years ago (1998?) and have had running since then. I...
- Tue Jul 11, 2006 10:02 am
- Forum: Anaerobic Digester
- Topic: Plastic removal from animal slurries
- Replies: 1
- Views: 11188
Hi Salman, What is the source -- and size -- of these foreign objects? And how fine are the screens? Would it be possible to reduce the opening size of the screens, and to press the slurry through them? Though not quite the same thing, I was involved with a possibly relevant project a number of year...
- Tue Jul 11, 2006 9:40 am
- Forum: Anaerobic Digester
- Topic: Increasing Biogas yield using trade wastes
- Replies: 2
- Views: 13059
Hi upstart, Sorry, no. What kinds of trade wastes do you have available? The best I could suggest would be to search the literature for others who may have tested those particular wastes -- and then, if nothing found, do your own lab-scale batch tests on them. (This may be something I could help wit...
- Tue Jul 11, 2006 9:23 am
- Forum: General Catchall
- Topic: Great Website
- Replies: 1
- Views: 17570
The house I live in is off the grid, and I noticed that you use a length of heat tape to heat the slurry with is this more efficent than water coils in the slurry. An excellent question. No, living off the grid you would definitely not want to use that high quality energy for something like low-gra...