隔离曝气生物反应器处理含硫含酚碱渣

Treatment of Alkali Waste Containing Sulfide and Phenol in Isolated-aeration Bioreactor

采用隔离曝气生物反应器（简称反应器）处理含硫含酚碱渣（简称碱渣），探讨了碱渣中硫化物的去除机理．研究了反应器中的挂膜驯化过程，考察了水力停留时间、气水体积比（简称气水比）及反冲洗周期等对碱渣中硫化物、挥发酚、COD和油等污染物处理效果的影响。实验结果表明，在碱渣处理量为1m^3／h、气水比为36：1、水力停留时间为12．0h，反冲洗周期为3～5d的条件下，经过隔离曝气生物氧化工艺处理后碱渣的COD、硫化物、油和挥发酚的去除率分别为88％，99％，89％，85％，出水BOD，约为30mg／L，BOD，／COD小于0．1，处理1t碱渣的产泥量为0．17～0．26kg。

Alkali waste containing sulfide and phenol was treated in an isolated-aeration bioreactor. The mechanism for removal of sulfide from the alkali waste was explored. The process of biofilm formation and its acclimtization in the bioreactor were studied. The factors affecting the removal of sulfide, volatile phenol, COD and oil in the alkali waste were investigated, such as HRT, volume ratio of air to water and backwashing period. The experimental results indicate that under the conditions of alkali waste feed flow 1 m3/h,volume ratio of air to water 36 ： 1 ,HRT 12.0 h and the backwashing period 3-5 d,the removal rates of COD, sulfide, oil and volatile phenol are 88% ,99%, 89% and 85%, respectively. BOD5 of the effluent is about 30 mg/L as well as BODs/COD is less than 0. 1. The quantity of sludge generated in treating 1 t alkaline waste is 0.17 - 0.26 kg.