混凝法处理洗浴废水的试验研究

洗浴废水是城市污水的重要组成部分．以洗浴废水为处理对象，针对其浊度高、有机物含量低、适于混凝处理的特点，通过杯罐试验考察了铝盐、铁盐及有机高分子混凝剂对浊度、CODcr、亚甲兰活性物质的去除效果．在综合絮凝除污能力和絮凝体沉降性能的基础上，初步遴选出最优的混凝剂及投加量，并考察了pH和水温对混凝效果的影响．试验结果表明，以聚合硫酸铁为混凝剂，在pH为6．5～8．5，水温15～45℃范围内可去除洗浴废水中大部分污染物，投量在20mg/L时，浊度去除率可达88％，CODcr去除率达85％，亚甲兰活性物质去除率达45％，均优于其他几种混凝剂．除亚甲兰活性物质外，各项指标均达到中水回用标准的要求．可进一步深度处理，以达到洗浴用水标准，实现就地回用．

Study on treatment of balneal wastewater using coagulation

Balneal wastewater is an important part of urban wastewater. The high turbidity and low organic contamination make it fit for coagulation treatment. The coagulation-flocculation jar test and a serious coagulants, such as the family of aluminum, iron and organic macromolecule were adopted in this test to examine the effects of removing impurity, including turbid, CODcr, and surfactants.Determinted the furthest coagulation and dose to achieve fine sedimentation and purification purpose.The results indicated that PFS can remove a majority of contamination in balneal wastewater,on the condition of pH between 6.5 and 8.5 and temperature between 15 and 45 centigrade. Every targets can meet water-reuse standard except surfactants. When the concentration of PFS is 20 mg/L, about 88% turbidity, 85% CODcr and 45% surfactants can be removed. A further treatment is needed to meet bathing-water standard, which can realize on the spot reuse.