石灰脱盐-混凝沉淀-砂滤组合再生城市污水二级出水试验研究  

Advanced Treatment in Secondary Effluent of Urban Sewage by Combined Process of Lime Desalination+Coagulation+Sand Filtration

作　　者：贺酰淑 廖正伟 王旭东[3,2] He Xianshu;Liao Zhengwei;Wang Xudong(Shaanxi Provincial Water Group Water Technology Company.Xi＇an 710000;School of Environmental and Municipal Engineering,Xi＇an University of Architecture and Technology,Xi＇an 710055;Research Institute of Membrane Separation Technology of Shaan Xi Province,Xi＇an 710055,China)

机构地区：[1]陕西省水务集团水务科技有限公司,陕西西安710000 [2]陕西省膜分离技术研究院,陕西西安710055 [3]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《广东化工》2018年第16期85-87,共3页Guangdong Chemical Industry

基　　金：陕西省重点产业链(群)项目(2017ZDCXL-GY-07-03)

摘　　要：采用石灰脱盐-混凝沉淀-砂滤组合工艺对铜川某污水处理厂二级出水进行了回用中试研究。结果表明,二级出水经组合工艺处理后,水中碱度、硬度和含盐量明显下降,去除率均在40%以上,同时出水浊度可达到0.93 NTU以下,出水总磷小于0.4 mg/L,其去除率可达100%。其余水质指标也较三级出水的好,出水水质满足电厂循环冷却水的水质要求。The study is based on the pilot test of the treatment of the secondary effluent in a wastewater treatmeot Plant in Tongchuan, by using the lime desalination＋coagulation and sand filtration combined process. The results show that alkalinity, hardness and the salt content can be effectively removed afier the secondary effluent is treated by the combined technology, and the removal rates are over 40%, while the turbidity can reach 0.93 NTU below, the total phosphorus（TP） is less than 0.4 mg/L, and the removal rate of TP can reach 100 %.The rest of the water quality indicators are better than that of the tertiary treatment, water quality can meet the needs of circulating cooling water quality in power plants.

关 键 词：石灰脱盐 混凝沉淀 砂滤 二级出水 污水再生 

分 类 号：X703.1[环境科学与工程—环境工程]