摘要
研究了一种利用组合工艺处理生活污水实现中水回用的方法.生活污水经SBR池、缺氧池、混凝沉淀池、砂滤池处理后出水,污染物去除率达到90%,达到回用标准,可以回用于生活杂用水等.实验确定了各处理单元的最佳工艺条件为:SBR曝气时间为7h;最佳缺氧处理时间为2h;处理2000ml水,氢氧化钙加药量为4.00ml,pH值为8.5,搅拌时间为3min,沉降时间为15min.
The composite techniques for treatment of sewage into middle-water were experimently studied. After the treatment through SBR pond, anoxic pond, ceagulation sedimentation pond and sand filter tank, the pollutant removing rate reached 90%, which satisfies the reuse standard, and can be reused as household water and so on. The experiment has determined the best process condition of each process unit. The aeration time of SBR is 7 h. The best anoxla processing time is 2 h. For treatment of 2 000 nd sewage, the calcium hydroxide addition is 4. 00 nd, the pH value is 8. 5, the stirring is 3 min, and the sedimentation is 15 min.
出处
《材料与冶金学报》
CAS
2006年第4期312-315,共4页
Journal of Materials and Metallurgy
关键词
中水回用
组合工艺
硝化
混凝
砂滤
middle-water reuse
composite techniques
nitrification
coagulation
sand fihration
