摘要
采用高温厌氧膨胀颗粒污泥床(EGSB)反应器处理低浓度、难降解聚氯乙烯(PVC)离心母液废水,以天津市经济技术开发区污水处理厂序批式活性污泥法(SBR)工艺好氧污泥和生物接触氧化法处理PVC离心母液废水污泥的混合污泥为接种污泥,以葡萄糖模拟废水为基质,不断增加PVC离心母液废水所占比例的方法驯化厌氧微生物,实现了系统的成功启动。系统启动期间,进水有机负荷(以COD计)和水力停留时间分别保持在0.2 kg/(m3.d)和50 h左右,出水COD去除率和pH分别稳定在80%和8.0左右。结果表明,添加共代谢基质能利用基质间的协同作用缓解有毒物质对微生物的毒性作用,显著提高了废水的可生化性。通过采用改变水质、保持稳定负荷实现EGSB反应器处理PVC离心母液废水的成功启动证明,该启动方法具有良好的稳定性和可靠性。
The low concentrated refractory mother liquid of polyvinyl chloride was treated by using expanded granular sludge bed reactor（EGSB） under thermophilic anaerobic condition with inoculating the mixture of aerobic activated sludge from sequencing batch reactor process for the municipal wastewater treatment plant and the sludge from the biological contact oxidation process for treating the mother liquid of polyvinyl chloride,and the system was successfully started up by gradually changing the proportion of glucose simulated wastewater and the mother liquid of polyvinyl chloride.The organic loading rate and hydraulic retention time were controlled at 0.2 kg/（m^3·d）（measured in COD concentration） and 50 h during the start-up process,the COD removal rate could achieved to 80% and the pH of effluent remained at 8.0.The results showed that the synergies of co-metabolic substrate could alleviate the toxicity of refractory substance on micro-organisms and improve the biodegradability of wastewater significantly.Starting-up method of changing the wastewater quality and keeping the stable organic loading presented perfect stability and reliability in EGSB reactor treating mother liquid of polyvinyl chloride.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2010年第10期29-32,36,共5页
Environmental Pollution & Control
基金
国家水体污染控制与治理科技重大专项子课题(No.2008ZX07314-001)
关键词
高温厌氧处理
PVC离心母液
EGSB反应器
启动
可生化性
thermophilic anaerobic treatment
mother liquid of polyvinyl chloride
expanded granular sludge bed（EGSB） reactor
start-up
biodegradability
