沉泥池也称为沉沙池,在多泥沙河流上取水时,虽在取水口采取了防沙措施,但水的含沙量和粒径还不能完全满足用水的要求。因此,可在进水口下游设置沉沙池,通过扩大过水断面,减小流速,沉淀不符合用水要求的泥沙。灌溉用水时,应沉淀粒径大于0.03~0.05 mm的泥沙。对发电引水,沉淀粒径大于0.25 mm的泥沙即可。沉沙池的沉沙率一般为80%~90%。
二级污水处理厂二沉池漂泥有反硝化漂泥、活性污泥老化漂泥、生物泡沫导致的漂泥。
There were anti-nitrification floating sludge, aged activated floating sludge and floating sludge from biological foam in the final settling basin of municipal second stage sewage treatment plant.
通过对杭州制水二公司平流式沉淀池污泥沉降曲线的测定、沉泥的量化,找到了一种较为直观、简单的以周期控制量为参照的排泥控制法。
We quantified the sedimentation by determination of sludge sedimentation curve and found out a simplified and perceived method to control the sludge discharge cycle.
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