[1]陈德放,李梅,张华军,等.投加二氧化碳控制出厂水铝含量的生产性试验[J].中国给水排水,2021,37(23):9-14.
　CHEN De-fang,LI Mei,ZHANG Hua-jun,et al.Controlling Aluminum Content in Finished Water of Waterworks by Dosing Carbon Dioxide[J].China Water & Wastewater,2021,37(23):9-14.
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投加二氧化碳控制出厂水铝含量的生产性试验

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第23期 页码: 9-14 栏目: 出版日期: 2021-12-01
Title:
Controlling Aluminum Content in Finished Water of Waterworks by Dosing Carbon Dioxide
作者:
陈德放1，李梅1，张华军1，马顺君1，高海燕1，谈巍1，王文喜2，何坚2
(1.上海浦东水务<集团>有限公司，上海201300；2.复旦大学环境科学与工程系，上海200438)
Author(s):
CHEN De-fang1，LI Mei1，ZHANG Hua-jun1，MA Shun-jun1，GAO Hai-yan1，TAN Wei1，WANG Wen-xi2，HE Jian2
(1. Shanghai Pudong Water Group, Shanghai 201300, China; 2.Department of Environment Science and Engineering, Fudan University, Shanghai 200438, China)
关键词:
pH; 铝含量; 二氧化碳; 出厂水
Keywords:
pH; aluminum content; carbon dioxide; finished water of waterworks
摘要:
针对上海南汇自来水有限公司惠南水厂和航头水厂受青草沙水库季节性藻类生长影响，出现原水pH值升高导致出厂水铝含量升高的问题,开展了投加二氧化碳调节原水pH值控制余铝的生产性试验。结果表明：投加二氧化碳调节原水pH值的控铝效果稳定，出厂水铝含量可稳定在0.1 mg/L以内。其中，“气/液”投加装置的二氧化碳利用率为94.3%，二氧化碳投加量为9.02 mg/L，PAC投加量减少了13.1 mg/L；“液/液”投加装置的二氧化碳利用率为92.9%，二氧化碳投加量为8.47 mg/L，PAC投加量减少了17.9 mg/L，有效降低了水厂投加加酸PAC调节原水pH值控铝的运行费用。
Abstract:
The Huinan Waterworks and Hangtou Waterworks in Shanghai City use Qingcaosha Reservoir as the water source. Due to the seasonal algae growth, the increase in the pH value of the raw water leads to an increase in the aluminum content in the finished water of waterworks. In order to control residual aluminum content, the production test of adding carbon dioxide to adjust the pH value was carried out. The results showed that the effect of controlling aluminum was stable when the pH value of raw water was adjusted by carbon dioxide, with the aluminum content in finished water kept less than 0.1 mg/L. In the experiment, the utilization rate of carbon dioxide in the “gas/liquid” dosing device reached 94.3% with a carbon dioxide dosage of 9.02 mg/L, and PAC dosage was reduced by 13.1 mg/L; meanwhile, the utilization rate of carbon dioxide in the “liquid/liquid” dosing device was 92.9% with a carbon dioxide dosage of 8.47 mg/L, and PAC dosage was reduced by 17.9 mg/L. This method can effectively reduce the operating cost of waterworks which applies acidadded PAC to adjust the pH value of raw water to reduce aluminum content.
更新日期/Last Update: 2021-12-01