聚合氯化铝强化某医院污水处理效果研究  

Study on the Effect of Polyaluminum Chloride Strengthening Sewage Treatment in Certain Hospital

作　　者：陈剑 赵文玉[2] 马邦定 廖琳 潘武团 CHEN Jian;ZHAO Wenyu;MA Bangding;LIAO Lin;PAN Wutuan(Survey and Design Institute of Guilin University of Technology,Guilin 541004,China;College of Environmental science and engineering,Guilin University of Technology,Guilin 541004,China)

机构地区：[1]桂林理工大学勘察设计研究院,广西桂林541004 [2]桂林理工大学环境科学与工程学院,广西桂林541004

出　　处：《化工管理》2024年第15期73-76,共4页Chemical Engineering Management

摘　　要：文章以某医院二沉池出水作为研究对象,选择聚合氯化铝(PAC)为混凝剂,通过烧杯实验模拟实际操作条件,考察投药量和pH值对处理效果的影响。研究结果表明,当PAC投加量为25 mg/L时,出水TP可以达到GB 18918—2002《城镇污水处理厂污染物排放标准》中的一级B标准,COD_(Cr)可以达到一级A标准,NH_(3)-N的去除效果仅能达到二级标准;碱性条件有利于UV_(254)的去除,而在PAC的有效pH值范围内对TOC去除效果最佳的pH值为5,且TOC的去除率随着PAC投加量的增加而增加;pH值对SUVA的影响主要是通过去除水中具有紫外吸收特性的有机物实现,而PAC投加量则主要是通过去除水中腐殖质及具有碳碳双键、芳香环结构的有机物对出水SUVA值产生影响。In this paper,the effluent from the secondary sedimentation tank of a hospital was selected as the research object,and polyaluminum chloride(PAC)was selected as the coagulant.The influence of dosage and pH on the treatment effect was investigated through beaker experiment to simulate the actual operating conditions.The research results show that when PAC dosage is 25 mg/L,effluent TP can reach first grade B standard and COD_(Cr) can reach first grade A standard in Pollutant Discharge Standard for Urban Sewage Treatment Plants(GB 18918—2002).The removal effect of NH_(3)-N can only reach the second grade standard.Alkaline conditions are beneficial to the removal of UV_(254),and the best pH for TOC removal is 5 in the effective pH range of PAC,and the removal rate of TOC increases with the increase of PAC dosage.The influence of pH value on SUVA is mainly achieved through the removal of organic matter with ultraviolet absorption properties in water,while the dosage of PAC is mainly affected by the removal of humus and organic matter with carbon-carbon double bond and aromatic ring structure in water.

关 键 词：医院污水 聚合氯化铝 混凝 去除效果 

分 类 号：X703[环境科学与工程—环境工程]