Revision as of 02:40, 26 December 2019

Introduction

Kitchen sink water, due to its potential for high organic matter loading, is considered blackwater in design practice
The Seed Eco-Home uses a 2-tote Open Source Biodigester design, where the kitchen sink feeds the biodigter with active pumping via a macerator lift pump.
To prevent gases from escaping, use a p-trap

The Sink Feed Concept above with 4" down-pipe contains only about 1.3 gallons volume total (about 2 feet of length total)
Interesting, this low volume made it such that the 1.4 gallon volume of the water pipes going to the biodigester (about 35 feet of 1" pipe), whenever pump was shut off, would fall back down and cause backflow into the sink, fouling the air
It turns out that the check valve (see design above) does not work in practice with sink blackwater
Thus, the design was modified to enlarge the storage volume of water and add a p-trap, so when backflow occurs, there is no backflow into the sink, and there are no gases escaping from the sink

@@ Line 2: / Line 2: @@
 *Kitchen sink water, due to its potential for high organic matter loading, is considered blackwater in design practice
 *The [[Seed Eco-Home]] uses a 2-tote [[Open Source Biodigester]] design, where the kitchen sink feeds the biodigter with active pumping via a macerator lift pump.
+*To prevent gases from escaping, use a p-trap
 =Sink Feed Concept=