污泥气循环UASB反应器的启动及循环时间的研究

Study on start-up and circulating time of the sludge gas circulating UASB reactor

试验研究了常温条件下污泥气循环UASB反应器对低浓度城市生活污水的处理效率及污泥气循环方式对处理效率的影响.结果表明:在常温条件下,该反应器CODCr容积负荷可达到5.0kg/(m3·d),运行稳定、出水清澈,CODCr去除率可达80%以上;同时,研究表明污泥气循环时间对UASB反应器的稳定运行有着重要的影响.

Under the condition of normal teraperature, the experiment makes a study of the sludge gas circulating UASB reactor treatment efficiency for urban sanitary sewage of low concentration and influence of sludge gas circulating way. The experiment indicates that, under the condition of normal temperature, the reactor can operate stably and the liquid is clear. The CODcr volume load is 5.0 kg/（m3 · d）. The rate of removal CODcr is above 80%. Mean-while, researches also show that the sludge gas circulating time has an important effect on stable operation of UASB reactor.