[1]张维,吴宝利,马换梅,等.污水厂高氧化性出水入流掺混管网对污染物衰减影响[J].中国给水排水,2024,40(9):14-19.
　ZHANGWei,WU Bao-li,MAHuan-mei,et al.Effect of Inflow Mixing of Highly Oxidizing Effluent from WWTP on Pollutant Attenuation[J].China Water & Wastewater,2024,40(9):14-19.
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污水厂高氧化性出水入流掺混管网对污染物衰减影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第40卷 期数: 2024年第9期 页码: 14-19 栏目: 出版日期: 2024-05-01
Title:
Effect of Inflow Mixing of Highly Oxidizing Effluent from WWTP on Pollutant Attenuation
作者:
张维1,2， 吴宝利1,2， 马换梅1,2， 孙永利1,2， 李劢1， 顾淼1， 王诣达1， 田腾飞1， 米鑫豪1
（1.中国市政工程华北设计研究总院有限公司，天津 300074；2.天津市城镇排水系统重点实验室，天津 300074）
Author(s):
ZHANG　Wei1，2， WU Bao-li1，2， MA　Huan-mei1，2， SUN　Yong-li1，2， LI　Mai1， GU　Miao1， WANG　Yi-da1， TIAN　Teng-fei1， MI　Xin-hao1
（1. North China Municipal Engineering Design & Research Institute Co. Ltd.， Tianjin 300074， China； 2. Tianjin Key Laboratory of Urban Drainage System， Tianjin 300074， China）
关键词:
高氧化性出水;  入流掺混;  污染物浓度;  稀释衰减;  氧化衰减
Keywords:
highly oxidizing effluent;  inflow mixing;  pollutant concentration;  dilution attenuation;  oxidation attenuation
摘要:
以污水处理厂出水和生活污水为研究对象，研究了两者掺混前后的氧化还原特性以及有机物、氮、磷浓度的衰减变化规律。当以1∶1的体积比掺混后，生活污水中的COD、BOD5、TN、NH3-N、TP、PO43-浓度因稀释作用而快速衰减，基本遵循物理稀释定律；在掺混反应4 h后，BOD5再次快速衰减，反应10 h的净衰减率、净衰减速率分别为36.54%和4.12 mg/（L·h）。分析认为，稀释作用是导致生活污水污染物浓度衰减的首要原因，而污水处理厂出水带来的氧化性物质促使微生物快速增殖后进行氧化还原反应，是导致生活污水BOD5浓度进一步衰减的关键因素。
Abstract:
Taking the effluent from wastewater treatment plant (WWTP) and the raw domestic sewage as the research object, the redox characteristics and the attenuation laws of organic matter, nitrogen and phosphorus concentration before and after the mixture were studied. The results showed that the concentrations of COD，BOD5，TN，NH3-N，TP and PO43- in domestic sewage decreased rapidly due to the dilution after mixing the effluent of WWTP with the domestic sewage at a ratio of 1∶1, which basically followed the physical dilution law. After mixing for four hours, BOD5 decayed rapidly again, and the net decay ratio and net decay rate of 10 h were 36.54% and 4.12 mg/(L·h), respectively. The analysis showed that dilution was the primary reason for the concentration attenuation of pollutants. The oxidizing substances in the effluent of WWTP could facilitate the rapid proliferation of microorganisms, and then promote the redox reaction, which was the key to the further attenuation of BOD5.
更新日期/Last Update: 2024-05-01