污水厂污泥一体化竖式强化渗滤浓缩自然干化与消化研究

针对目前国内污泥处理处置存在的问题,为实现污泥浓缩消化一体化,开发了污泥一体化强化渗滤浓缩自然干化与消化新工艺反应器,并进行了城市水厂污泥处理试验.结果表明,在有机负荷为0.8 kg VSS/(m3·d)、平均水力停留时间为8.3 d、污泥停留时间为120 d的条件下,污泥有机物去除率可达到44.4%,排泥含水率达到79.1%,污泥消化与浓缩过程起到了相互促进的作用.渗滤液须抽回至污水处理厂处理.

Study on the integration of vertical enhanced filtration and concentration and natural drying and digestion on sewage sludge

In light of the existing problems of domestic sludge treatment and disposal, and in order to achieve the integration of concentration and digestion of sludge, a new type of reactor of integration of vertical enhanced filtration and concentration and natural drying and digestion on sewage sludge treatment was developed. Furthermore, the test was made on the sewage sludge treatment. The result shows that under the conditions of organic loading 0.8 kg VSS/(m³ ·d) , the average HRT 8.3 d, and sludge settled time 120 d, the organic removal rate comes up to 44.4%, and water content in sludge comes up to 79.1% with clear supernatant. Sludge digestion and concentration can be stimulated by each other. The filtrated liquid must be returned to sewage treatment plant for treatment.