[1]赵新娟,董芸,张耀明,等.短流程水处理工艺对南水北调中线原水的净化效果[J].中国给水排水,2022,38(17):55-59.
　ZHAOXin-juan,DONGYun,ZHANGYao-ming,et al.Purification Performance of Short-flow Water Treatment Process for Raw Water from Middle Route of South-to-North Water Diversion Project[J].China Water & Wastewater,2022,38(17):55-59.
点击复制

短流程水处理工艺对南水北调中线原水的净化效果

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第17期 页码: 55-59 栏目: 出版日期: 2022-09-01
Title:
Purification Performance of Short-flow Water Treatment Process for Raw Water from Middle Route of South-to-North Water Diversion Project
作者:
赵新娟1， 董芸1， 张耀明2， 赵亮1， 蒋建伟2， 尹硕2， 刘伯一1
（1.天津市华淼给排水研究设计院有限公司，天津 300190；2.天津中法芥园水务有限公司，天津 300121）
Author(s):
ZHAO　Xin-juan1， DONG　Yun1， ZHANG　Yao-ming2， ZHAO　Liang1， JIANG　Jian-wei2， YIN　Shuo2， LIU　Bo-yi1
（1. Tianjin Hua Miao Research & Design Institute of Water & Wastewater Co. Ltd.， Tianjin 300190， China； 2. Tianjin Sino French Jieyuan Water Co. Ltd.， Tianjin 300121， China）
关键词:
短流程水处理工艺;  南水北调中线原水;  溶气气浮;  臭氧氧化;  炭砂过滤
Keywords:
short-flow water treatment process;  raw water from middle route of South-to-North Water Diversion Project;  dissolved air flotation (DAF);  ozonation;  carbon sand filtration
摘要:
针对南水北调中线原水水质特点，采用溶气气浮+臭氧氧化+炭砂过滤组合工艺对其进行中试研究。通过对工艺参数的优化，混凝剂采用三氯化铁和聚合氯化铝，其中三氯化铁最佳投加量为15 mg/L，聚合氯化铝最佳投加量为30 mg/L。气浮单元最佳溶气压力为0.45 MPa，最优回流比为10%，臭氧最佳投加量为1.5 mg/L，炭砂滤柱的最佳滤速为8 m/h。在浊度为1.21~1.42 NTU、CODMn为2.3~2.8 mg/L、藻类计数为1 192×104~1 256×104 个/L的原水水质条件下，出水浊度<0.15 NTU，浊度去除率为90%~93%，CODMn去除率为40%~50%，藻类去除率为93%~95%。可见，该工艺对浊度、藻类和有机物的去除率较高，南水北调中线原水适合采用该工艺进行处理。
Abstract:
According to the quality characteristics of raw water from the middle route of South-to-North Water Diversion Project, a pilot study of the combined process consisting of dissolved air floatation, ozonation and carbon sand filtration for purifying the raw water was carried out.Ferric chloride and polyaluminium chloride were selected as coagulants through the optimization of process parameters, and the optimum dosages of ferric chloride and polyaluminium chloride were 15 mg/L and 30 mg/L, respectively. The optimum dissolved gas pressure of the air flotation unit was 0.45 MPa, and the optimum reflux ratio was 10%. The optimum dosage of ozone was 1.5 mg/L, and the filtration velocity suitable for carbon sand filtration was 8 m/h.When the raw water quality was as follows: turbidity of 1.21-1.42 NTU, CODMn of 2.3-2.8 mg/L and algae count of 11.92 million cells/L to 12.56 million cells/L, the turbidity of effluent was less than 0.15 NTU and the removal efficiencies of turbidity, CODMn and algae count were 90%-93%, 40%-50% and 93%-95%, respectively. Therefore, the process had high removal efficiencies of turbidity, algae and organic matter, suggesting that it was suitable to treat raw water from the middle route of South-to-North Water Diversion Project.
更新日期/Last Update: 2022-09-01