LIUZeng-jun,ZHANGKai-hai,SUNXu-ying,et al.Application of Multi-stage AO in the Treatment of Low Carbon and High Nitrogen Domestic Sewage with High Discharge Standard[J].China Water & Wastewater,2024,40(2):55-59.
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Application of Multi-stage AO in the Treatment of Low Carbon and High Nitrogen Domestic Sewage with High Discharge Standard

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第2期 Page: 55-59 Column: Date of publication: 2024-01-17
Author(s):
LIU　Zeng-jun1;  ZHANG　Kai-hai1;  SUN　Xu-ying2;  QIU　Lin-yong3
（1. Shandong Urban Construction Design Institute， Jinan 250021， China；2. Jihongtan Reservoir Management Station， Shandong Water Diversion Project Operation and Maintenance Center， Qingdao 266111， China； 3. Zhucheng Municipal Public Utilities Service Center， Weifang 262200， China）
Keywords:
multi-stage AO;  high discharge standard;  low carbon and high nitrogen;  domestic sewage;  quasi class Ⅳ discharge standard
Abstract:
The design scale of a domestic sewage treatment plant in the economic development zone of a coastal prefecture-level city in northern Shandong Province is 5 000 m3/d. The influent quality of the sewage treatment plant is characterized by high TN and low BOD5. The COD, ammonia nitrogen and TP in effluent is required to meet the class Ⅳ limits specified in Environmental Quality Standards for Surface Water (GB 3838-2002), and the effluent TN should be less than 12 mg/L. The treatment process of the project consists of multi-stage AO, magnetic coagulation, denitrification deep bed filter and ozone catalytic oxidation, and the total investment is 50.55 million yuan. Since the official operation in August 2021, the sewage treatment plant has showed good operational performance. The average daily operating cost is approximately 4.2 yuan/m3, and the effluent quality stably meets the discharge standard.
Last Update: 2024-01-17