Study on the treatment of aquaculture wastewater by the ultrafiltration-ammonia stripping-electrodialysis-MAP process

doi:10.14088/j.cnki.issn0439-8114.2021.18.014

Abstract

Abstract: In order to develop an efficient, reasonable and feasible method for the treatment of aquaculture wastewater, ultrafiltration-ammonia stripping-electrodialysis-MAP process was used to treat the wastewater from a chicken in Yantai, Shandong province. The results showed that the concentrations of COD, phosphate, and total phosphorus in the water samples decreased to different degrees after ultrafiltration, by 72%, 37% and 39%, respectively; Ammonia stripping process had a good effect on the removal of ammonia nitrogen in wastewater, the removal efficiency was >99%, and the final concentration was 60 mg/L. The desalting rate of electrodialysis was over 86%; Finally, magnesium ammonium phosphate （MAP） crystallization method was used to recover phosphorus from the aquaculture wastewater, and the recovery rate of phosphorus reached 93.7%.

Key words: ultrafiltration, ammonia stripping, electrodialysis, MAP, aquaculture wastewater

CLC Number:

X703.1

SHI Ya-wei, GAO Hong, LIU Yan-jie, HAN Xiu-yan, PAN Mei-lin, SONG Fan-yong, WANG Shuai, WANG Yao, GONG Yuan-jian, YANG Zhong-feng, YANG Xiao-le. Study on the treatment of aquaculture wastewater by the ultrafiltration-ammonia stripping-electrodialysis-MAP process[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(18): 72-76.

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