ZHANG Guang-run,WANG Bai-yang,XIONG Qing-quan,et al.Treatment of Piggery Bio-slurry by Two-stage A/O, Flocculation and Sedimentation[J].China Water & Wastewater,2021,37(8 8):134-138.
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Treatment of Piggery Bio-slurry by Two-stage A/O, Flocculation and Sedimentation

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 8 8 Page: 134-138 Column: Date of publication: 2021-04-17
Author(s):
ZHANG Guang-run; WANG Bai-yang; XIONG Qing-quan; CHEN Hai-hong; YAO Xiao-wen; LIU Zhi-qing
(College of Environmental Resource and Chemical Engineering, Nanchang University, Nanchang 330031, China)
Keywords:
piggery bio-slurry; two-stage A/O process; flocculation and sedimentation
Abstract:
In view of the characteristics of high nitrogen and phosphorus content, poor biodegradability of piggery bio-slurry, the combined process of two-stage A/O, flocculation and sedimentation has been adopted at a pig farm in Jiangxi Province. The treatment capacity is 1 500 m3/d, the total project investment is 12 million yuan and operation cost is 3.30 yuan/m3. The results showed that the removal rates of COD, NH3-N and PO3-4-P were 89.3%, 99.1%, 99.7%, respectively. The effluent indexes met the first-level discharge criteria of Integrated Wastewater Discharge Standard (GB 8978-1996).
Last Update: 2021-04-17