制裘废水厌氧处理的可行性研究

Anaerobic Fermentation for Fur Processing Wastewater.

采用静态试验法研究了制裘过程产生的两股主要废水——浸皮废水和洗皮废水厌氧处理的可行性。浸皮废水对甲烷菌无抑制作用,并具有良好的厌氧生物降解性,甲烷气产率为1.02 m^3/m^3,COD去除率可达87.6％。洗皮废水的甲烷气产率为0.82m^3/m^3。洗皮废水中的洗涤剂DG7不能被厌氧降解,但会被污泥吸附,当其浓度低于50—100 mg/L,甲烷菌可被驯化,不影响厌氧过程。洗皮废水宜与浸皮废水或其它污水合并进行厌氧处理。

Batch bioassays have been applied to determine the feasibility of anaerobic treatment for two main flows of wastewater from fur processing: for soaking waste water and for scouring wastewater. The former does not restrict methanogens and can be biodegraded easily under the anaerobic conditions with the methane production of 1.02 m3/m3 while the COD removal percentage as high as 87.6%. In the latter with the methane production of 0.82 m3/m3, detergent DG7 can not be biodegraded anas-robically, but can be adsorbed on sludge and shows effects of restriction to methanogens that can be acclimated, even there is no influence on the anaerobic process when the concentration of DG7 is less than 50-100 mg/L. It isreasonable for the scouring wastewater to be treated anae-robically with the soaking wastewater or other sewage at the same process.