Introduction 13operations in the canning plant. It also replaces steam for heating the scalding tank
in the slaughterhouse and the cooking tank in the meat processing plant; and
replaces the electric heaters in the drying rooms. The farms use biogas to run the
gas refrigerators and electric generators, and converted gas engines to replace the
electric motors for deep-well pumping (Maramba 1978).
Figure 1.6 Flow diagram of Kirikan Farm, Thailand
Digested slurry from the above biogas digesters is conditioned in a series of
waste stabilization ponds and used as a partial ration (10 percent) in the pig feed.
Treatment of the sludge supernatant (liquid portion) is through a combination of
planktonic algae (Chlorella) and fish (Tilapia) ponds (Diaz and Golueke 1979).
Feed MillChicken
farmPiggery Duck farmFish pondsAgricultural farmBiogas
digesterCooking
dead pigsMaizeManureGasMarketPigsEggsMarketChickensFeedDefatted bran,
small broken riceFrom rice mill Defatted Soya
bean, fish meal,
etc.FeedFeedEggsMarketDucksMarketWastes WastesMarketMarket MarketVegetable FruitsPaddyFishEffluent