Fe/C-Fenton-MBBR工艺处理高浓度硫酸盐废水  

Combined Process of Fe/C Micro-electrolysis,Fenton Oxidation and MBBR for Treatment of High-sulfate Wastewater

作　　者：许劲[1,2] 谈涛[1,2] 李跃华 李家祥 齐龙[1,2] 王阳阳[1,2] 蒙丽容[4] 

机构地区：[1]重庆大学城市建设与环境工程学院,重庆400045 [2]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [3]南京绿岛环境工程有限公司,江苏南京210046 [4]中国建筑东北设计研究院有限公司重庆公分司,重庆400023

出　　处：《中国给水排水》2012年第24期86-90,共5页China Water & Wastewater

摘　　要：高浓度硫酸盐不仅抑制好氧微生物的生长,还会与产甲烷菌竞争抑制厌氧生物处理的进程,而酚类等难降解有机物也极大增加了生物处理的难度。重庆某精细化工厂每日排放成分复杂的高浓度硫酸盐废水,COD为11～23 g/L,硫酸盐为62～78 g/L,COD/SO24-<0.67,BOD5/COD≈0.013,可生化性极差,且不宜采用厌氧生物处理。通过Fe/C-Fenton物化单元提高废水可生化性,并驯化耐硫酸盐微生物作为MBBR的主体菌种,采用Fe/C-Fenton-MBBR组合工艺进行处理,出水各项指标均达到《污水综合排放标准》(GB 8978—1996)的三级标准。The high sulfate concentration not only inhibits aerobic microorganisms but also inhibits anaerobic biological treatment process by competing with methanogens. Furthermore, the refractory and toxic compounds such as phenols also enhance the difficulty of biological treatment. The high-sulfate wastewater generated from a fine chemical plant in Chongqing was characterized by high values of COD （ 11 to 23 g/L） and sulfate （62 to 78 g/L）, low values of COD/sulfate ratio （〈0.67） and BODs/COD ratio （0. 013 ）, which indicated that the wastewater had a very poor biodegradability and was inappropri- ate to be treated with anaerobic biological process. As a result, Fe/C - Fenton was aimed to improve the biodegradability, and the MBBR was operated as aerobic biological unit in which sulphate-tolerant mi- crobes were domesticated as dominant microorganisms. In the combined process of Fe/C, Fenton and MBBR, all the effluent indexes met the third level criteria specified in the Integrated Wastewater Dis- charge Standard （ GB 8978 - 1996）.

关 键 词：高浓度硫酸盐废水 FE C微电解 FENTON氧化 MBBR 容积负荷 

分 类 号：X703[环境科学与工程—环境工程]