XIAOHai-wen,QINWen-yi,ZHAIJun,et al.Application of Microalgae Photobioreactor in Upgrading and Reconstruction of Piggery Wastewater Treatment Process[J].China Water & Wastewater,2022,38(19):23-27.
Application of Microalgae Photobioreactor in Upgrading and Reconstruction of Piggery Wastewater Treatment Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第19期
Page:
23-27
Column:
Date of publication:
2022-10-01
- Keywords:
- piggery wastewater; corridor-type microalgae photobioreactor; upgrading and reconstruction
- Abstract:
- A large-scale pig farm in Guizhou Province adopts dry manure process. Its wastewater is mainly from the washing of piggery, which has the characteristics of high COD, nitrogen and phosphorus. As the effluent quality of the original biological combined process is difficult to reach the discharge standard, the corridor-type microalgae photobioreactor was added in the upgrading and reconstruction project. Good treatment performance of the modified process consisting of UASB, SBR and corridor-type microalgae photobioreactors was obtained, and the effluent quality was better than the limits specified in Discharge Standard of Pollutants for Livestock and Poultry Breeding (GB 18596-2001) and the local standards of Guangdong, Zhejiang and Shandong provinces. The operational cost of the project was 2.04 yuan/m3. The effluent could be reused for washing the piggery, and the microalgae biomass could be recycled, which had good economic and environmental benefits.
Last Update:
2022-10-01