城市混合污泥发酵处理对草履虫的综合毒性研究

Toxicity Research of Paramecium through Fermentation Treatment of Urban Mixed Sludge

以尾草履虫作为试验动物,对城市污水处理厂的原污泥和消化污泥的混合污泥在好氧发酵处理过程的综合毒性变化进行了研究.结果表明:发酵处理后的城市混合污泥的毒性比发酵处理前降低了40余倍.

Taken paramecium caudutum as test animal, the comprehen-sivetoxicity changes from them have been studied during the aerobic treatment of mixed sludge of raw and degestive sludge at the urban waste water treatment plant. The result showed that the toxicity of fermented and treated urban mixed sludge reduced 40 times in comparison with the toxicity before treatment.