| 摘要 |
PURPOSE: A method has high removal efficiency of nitrogen, and an anaerobic activation tank does not need large volume. This sewage treatment method is especially for food garbage, excrement of human and domestic animal, organic waste CONSTITUTION: The method is composed of the first settling pond(1a) for the separation of solidity in waste water, the first aerobic activation tank(2a) for the nitrification of organic nitrogen and ammonium nitrogen, the anaerobic activation tank(3) for the release of phosphorus from the activating sludge, the second aerobic activation tank(2b) for the oxidation of remained organic material and addition of phosphorus to sludge, and the second settling pond(1b) for the separation of solidity from water. When the solidity generated in the second settling pond(1b) moves to the first aerobic activation tank(2a) as returning sludge(6), organic waste will be added to waste water and diluted. Solidity separated from the first settling pond(1a) will be produced by an aerobic microorganism in fermentation tank(5). The method will be emancipated phosphorus from activated sludge in anaerobic condition.
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