[1]曾晓岚,尹嘉豪,陈亮,等.电化学工艺处理滇池流域农业面源污水[J].中国给水排水,2022,38(13):105-110.
　ZENGXiao-lan,YINJia-hao,CHENLiang,et al.Electrochemical Process for Treatment of Agricultural Non-point Source Sewage in Dianchi Basin[J].China Water & Wastewater,2022,38(13):105-110.
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电化学工艺处理滇池流域农业面源污水

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第13期 页码: 105-110 栏目: 出版日期: 2022-07-01
Title:
Electrochemical Process for Treatment of Agricultural Non-point Source Sewage in Dianchi Basin
作者:
曾晓岚1,2， 尹嘉豪1,2， 陈亮1,2， 张玉3， 刘长兴3， 丁文川1,2
（1.重庆大学 三峡库区生态环境教育部重点实验室，重庆 400045；2.重庆大学 低碳绿色建筑国际联合研究中心，重庆 400045；3.中国市政工程西南设计研究总院有限公司，四川 成都 610081）
Author(s):
ZENG　Xiao-lan1，2， YIN　Jia-hao1，2， CHEN　Liang1，2， ZHANG　Yu3， LIU　Chang-xing3， DING　Wen-chuan1，2
（1. Key Laboratory of the Three Gorges Reservoir Region’s Eco?Environment ， Chongqing University， Chongqing 400045， China； 2. The National Centre for International Research of Low?carbon and Green Buildings， Chongqing University， Chongqing 400045， China； 3. Southwest Municipal Engineering Design ＆ Research Institute， Chengdu 610081， China）
关键词:
电化学工艺;  脱氮除磷;  农业面源污水;  滇池流域
Keywords:
electrochemical process;  nitrogen and phosphorus removal;  agricultural non-point source sewage;  Dianchi basin
摘要:
设计了一套电化学脱氮除磷系统，在滇池流域某水质净化厂进行中试，探讨了该系统对农业面源污水中COD、TP、NH3-N、TN的去除效果，并考察水力停留时间（HRT）及电解质对强化脱氮的影响。结果表明，在电流强度为5 A、极板间距为7 cm、极板数量为6 对、HRT为6 h的条件下，电化学工艺对COD、TP、NH3-N及TN的去除率分别为65.9%、79.9%、8.1%和6.8%，其中出水COD、TP满足《城镇污水处理厂污染物排放标准》（GB 18918—2002）一级A标准，且出水TP浓度可满足滇池流域磷的提标要求（<0.3 mg/L），但脱氮效果不理想。当HRT为20 h、NaCl投加量为3 000 mg/L时，对NH3-N、TN的去除率分别提升至48.5%、45.2%，但仍未达到排放标准。该电化学工艺对去除有机物和磷具有优异性，而脱氮方面仍有待进一步优化。
Abstract:
A set of electrochemical nitrogen and phosphorus removal system was designed, and a pilot?scale device was built in a wastewater purification plant in Dianchi basin. The removal of COD, TP, NH3-N and TN from agricultural non-point source sewage was discussed, and the effects of hydraulic retention time (HRT) and electrolyte on enhanced nitrogen removal were investigated. Under the following conditions: current intensity of 5 A, plate spacing of 7 cm, plate number of 6 pairs and HRT of 6 h, the removal efficiencies of COD, TP, NH3-N and TN were 65.9%, 79.9%, 8.1% and 6.8%, respectively. Among them, the COD and TP in effluent met the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), and the TP in effluent even met the requirements of phosphorus discharge in Dianchi basin (less than 0.3 mg/L). However, the denitrification performance was poor. When HRT and NaCl dosage were 20 h and 3 000 mg/L, the removal efficiencies of NH3-N and TN were increased to 48.5% and 45.2%, respectively, but they still failed to meet the discharge standard. The electrochemical process had an excellent performance in the removal of organic matter and phosphorus. However, the nitrogen removal needs to be further optimized.

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更新日期/Last Update: 2022-07-01