EGSB反应器处理焦化废水的启动试验研究  

Startup Experimental Research of EGSB Reactor for Treatment of Coking Wastewater

作　　者：董春娟[1] 王海会[2] 陈素云[1] 张晋华[1] 吕炳南[3] 

机构地区：[1]太原大学环境工程系,山西太原030009 [2]中北大学化工与环境学院,山西太原030051 [3]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《中国给水排水》2011年第9期91-94,共4页China Water & Wastewater

基　　金：山西省科技攻关项目(2007031104-1);太原市科技发展计划项目(07021003;091008)

摘　　要：在常温下,对接种市政消化污泥和少量颗粒污泥的EGSB反应器依次进行了啤酒废水快速启动和焦化废水快速驯化试验研究,以期寻求EGSB反应器处理焦化废水的快速启动方法。结果表明,采用啤酒废水能够在10 d左右快速启动EGSB反应器;采用逐渐提高进水中焦化废水比例的方法,能够实现对EGSB反应器中颗粒污泥的快速驯化,此阶段历经6个月,在焦化废水COD高达2 200 mg/L左右、进水流量为1.2 L/h、有机负荷为5.6 kgCOD/(m3.d)左右、HRT为10h、回流比为10∶1、液体上升流速为3.1 m/h的条件下,EGSB反应器对COD的去除率能够达到56.2%。回流稀释在一定程度上弱化了焦化废水的毒性作用,而且相对较高的液体上升流速强化了传质效果,使得EGSB反应器在处理高浓度焦化废水时能够高效稳定运行。To obtain the rapid startup of EGSB reactor for treatment of coking wastewater, the rapid startup using brewery wastewater and the quick acclimation using coking wastewater in EGSB reactor seeded with anaerobic digestion sludge and a small amount of granular sludge were studied under ambient temperature. The results indicate that the EGSB reactor can be started up within 10 d when using brewery wastewater. The quick acclimation of granular sludge in the EGSB reactor can be achieved by gradually increasing the coking wastewater supplement ratio, and this acclimation phase lasts 6 months. With the conditions of about 2 200 mg/L of influent COD, influent flow rate of 1.2 L/h, organic load of 5.6 kg- COD/（m^3 · d） , HRT of 10 h, recycle ratio of 10 ： 1 and upflow velocity of 3.1 m/h, the COD removal rate can reach 56.2%. The recycle dilution can reduce the toxicity of the coking wastewater to some extent, and relatively higher upflow velocity in the EGSB reactor can enhance the mass transfers, which ensures that the EGSB reactor can operate efficiently and stably when treating high concentration coking wastewater.

关 键 词：EGSB反应器 焦化废水 消化污泥 颗粒污泥 启动 驯化 

分 类 号：X703[环境科学与工程—环境工程]