LIU Jian-ming.Application of Multi-point Influent Reversed A2/O and Submerged Ultrafiltration Process in a Semi-underground WWTP[J].China Water & Wastewater,2021,37(18 18):111-115.
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Application of Multi-point Influent Reversed A2/O and Submerged Ultrafiltration Process in a Semi-underground WWTP

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 18 18 Page: 111-115 Column: Date of publication: 2021-09-17
Author(s):
LIU Jian-ming
(China Railway Eryuan Engineering Group Co. Ltd., Chengdu 610031, China)
Keywords:
semi-underground wastewater treatment plant; multi-point influent reversed A2/O process; ultrafiltration
Abstract:
The combined process of multipoint influent reversed A2/O and submerged ultrafiltration is used in a semi-underground wastewater treatment plant with design capability of 10×104 m3/d. Since it was put into operation, the process has a remarkable effect on pollutant removal, such as the effluent concentrations of COD, ammonia nitrogen, TN, and TP were 25-31, 1.0-1.3, 8.2-9.8, and 0.21-0.31 mg/L respectively, which are stably superior to the first level A criteria of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The average annual operating cost was 0.548 yuan/m3. The process had the characteristics such as advanced treatment technology, new efficient anticorrosive materials, garden-like plant design and economic operation.
Last Update: 2021-09-17