生物活性炭法处理ABS树脂生产废水

采用负载经驯化后微生物的活性炭与未负载微生物的空白活性炭处理ABS凝聚干燥工段废水,研究生物活性炭系统中存在的生物再生作用.结果表明,生物活性炭能够高效分解转化ABS废水中的有机腈类及芳香类污染物,其处理出水的COD、TOC及Org-N的去除率均达到80%以上,并且废水中的有机氮主要分解转化为NH3-N,其NH3-N转化率高达65%.生物活性炭表面繁殖了大量的长杆菌、钟形虫及少量的球菌,活性炭能够为微生物生长提供适宜的环境,并保护微生物避免受有毒难降解污染物的抑制作用,同时活性炭表面生长的微生物能够对活性炭进行生物再生,使其长期保持高效的吸附能力.

Treatment of ABS resin manufacturing wastewater by biological activated carbon(BAC)

Wastewater from ABS condensation drying section was treated by biological activated carbon(BAC) and activated carbon without bacteria.The bioregeneration occurring during simultaneous adsorption-biodegradation processes was studied seriously.The organic nitriles and aromatic compouds could be decomposed and transformed,and the removal efficiencies of COD,TOC and Org-N were all more than 80%.The organic nitrogen of ABS wastewater could be transformed into NH3-N,and its transformation efficency was more than 65%.There were a large number of microorganisms on the surface of activated carbon in the BAC,such as long-stem bacteria,vorticella and coccises.The activated carbon provided an attachment surface for microorganisms and protected them from shock loadings of toxic and inhibitory materials,whereas microorganisms bioregenerated the activated carbon.