超高盐厌氧生物处理系统快速启动及其除污特性  

RAPID START-UP AND POLLUTANT REMOVAL CHARACTERISTIC OF HYPERSALINE ANAEROBIC SYSTEM

作　　者：陈垚[1,2] 周健[2] 甘春娟 李晓品[2] 

机构地区：[1]重庆交通大学河海学院,重庆400074 [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]林同梭国际工程咨询中国有限公司,重庆401121

出　　处：《水处理技术》2011年第6期90-94,共5页Technology of Water Treatment

基　　金：重庆交通大学引进人才基金;国家水体污染控制与治理科技重大专项(2008ZX07315-004);重庆市教育委员会科学技术研究项目(KJ110403)

摘　　要：针对高盐榨菜腌制废水(盐度7%,NaCl计,下同)厌氧生物处理系统启动时间较长的问题,在ASBBR反应器中接种好氧活性污泥直接厌氧启动,采用二阶段盐度提升法进行构建超高盐厌氧生物处理系统,考察了驯化过程中反应器的除污特性。试验结果表明,以3%盐度的废水启动反应器,通过二阶段盐度逐步提升法,在进水COD有机负荷0.5 kg.m-3.d-1,水温30℃,反应器运行方式为进水0.25 h/反应23.5 h/沉淀排水0.25 h条件下,26 d后可成功构建出超高盐条件下的厌氧生物膜处理系统,COD去除率可达86%,实现了反应器的快速启动。同时,ASBBR反应器在未排泥的条件下表现出厌氧除磷特性,磷酸盐去除率可达24%。在排除现有除磷途径的可能性后,通过磷平衡分析表明,ASBBR反应器对磷酸盐的去除途径为磷酸盐还原。Start-up of anaerobic sequencing batch biofilm reactor（ASBBR） in anaerobic directly inoculated with aerobic activated sludge,and construct hypersaline anaerobic system adopted two-stage salinity increased method in this study to resolve the long start-up time problem encountered with anaerobic system in treating hypersaline（7% salinity,measured by NaCl） mustard tuber wastewater.Meanwhile,pollutant removal characteristic of reactor during domestication was studied.Results showed that an anaerobic bioflim treatment system under hypersaline condition could be successfully constructed after 26 days,and removal rate of COD arrived 86%,realizing the rapid start-up of reactor,when the reactor was started with 3%-salinity wastewater and the salinity was increased through two stages,at influent organic loading of 0.5 kg·m-3·d-1,30 ℃ and running condition of reactor as influent 0.25 h/ reaction 23.5 h/ settle and effluent 0.25 h.Furthermore,ASBBR showed the performance of phosphorus removal characteristic without sludge discharge,and phosphate removal rate reached about 24%.After excluding the possibility of approach to present phosphorus removal,phosphorus balance was analyzed,and result showed that phosphate removal path of ASBBR was phosphate reduction.

关 键 词：厌氧 榨菜废水 快速启动 厌氧除磷 磷酸盐还原 

分 类 号：X792[环境科学与工程—环境工程] X703.1