YANGXiao-fan,ZHANGHong-yu,ZHANGZong-jin,et al.Electroplating Wastewater Treatment by Hydrolytic Acidification, Two-stage A/O and MBR Process[J].China Water & Wastewater,2023,39(2):113-119.
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Electroplating Wastewater Treatment by Hydrolytic Acidification, Two-stage A/O and MBR Process

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第2期 Page: 113-119 Column: Date of publication: 2023-01-17
Author(s):
YANG　Xiao-fan1;  ZHANG　Hong-yu2;  ZHANG　Zong-jin3;  CHEN　Cui-ying3;  DENG　Ji-bin4;  ZHANG　Li-qiu1
（1. School of Civil Engineering， Guangzhou University， Guangzhou 510006， China； 2. School of Environmental Science and Engineering， Guangzhou University， Guangzhou 510006， China； 3. Guangdong Xinzhanye Environmental Technology Co. Ltd.， Jiangmen 529152， China； 4. Guangdong Shaoguan Port Co. Ltd.， Shaoguan 512100， China）
Keywords:
electroplating wastewater;  biological nitrogen removal;  two-stage A/O system
Abstract:
Aiming at the problem of nitrification effect fluctuation for an electroplating wastewater treatment plant adopting hydrolytic acidification, two-stage A/O, and MBR process in Guangdong Province, the two-stage A/O process is adjusted to O/O/A/A process to strengthen biological nitrification and denitrification efficiency by analyzing the changes of ammonia nitrogen, nitrate nitrogen, total nitrogen, COD and denitrification effect in various structures along the biological treatment system. The average removal rate of ammonia nitrogen improved from 43% to 82% after the primary A/O was adjusted to O/O. After optimization, the average removal rates of ammonia nitrogen in the first and second stages of the whole biological treatment system are 97.56% and 97.65% respectively. After commissioning, the average removal rates of total nitrogen are improved from the initial 71.4% and 71.7% to 80.5% and 77.3%, respectively.
Last Update: 2023-01-17