MAJun-tao,YUJian-hai,GONGYa-bin.A Case of Anaerobic Fermentation and A/O Large Cycle Treatment Process for Pig Breeding Waste[J].China Water & Wastewater,2023,39(22):121-125.
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A Case of Anaerobic Fermentation and A/O Large Cycle Treatment Process for Pig Breeding Waste

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第22期 Page: 121-125 Column: Date of publication: 2023-11-17
Author(s):
MA　Jun-tao1;  YU　Jian-hai1;  GONG　Ya-bin1; 2
（1. Hangzhou Energy & Environmental Engineering Co. Ltd.， Hangzhou 310020， China； 2. Zhejiang Provincial Key Laboratory of Biofuel， Hangzhou 310014， China）
Keywords:
swine wastewater;  biogas project;  A/O large cycle;  gravitational settling
Abstract:
Taking a pig breeding waste utilization project with the capacity of 900 m3/d operated by COFCO Joycome Co., Ltd. in Chifeng as a case, the process of gravitational settling system is introduced for reducing the burden and returning to the field. The concentrated liquid is treated by anaerobic fermentation for biogas utilization and circular irrigation system of biogas slurry. Meanwhile the dilute liquid is biochemically treated by UASB and A/O large cycle process to meet the dry land crops criteria in Standards for Irrigation Water Quality (GB 5084-2021) and the Discharge Standard of Pollutant for Livestock and Poultry Breeding (GB 18596-2001). The treatment cost is about 9.25 yuan/m3. The process has the characteristics of small footprint, low energy consumption for secondary lifting, high nitrogen and phosphorus removal efficiency, and stable effluent quality, which can provide reference for similar pig manure water treatment projects.
Last Update: 2023-11-17