ZHAOBo-chao,DOUGuang-yu,YUANXi-nan,et al.Demonstration Project of Potato Starch Wastewater Protein Recovery and Land Use[J].China Water & Wastewater,2023,39(22):126-132.
Demonstration Project of Potato Starch Wastewater Protein Recovery and Land Use
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第22期
Page:
126-132
Column:
Date of publication:
2023-11-17
- Abstract:
- In order to promote the scientific and precise treatment of processing wastewater in the potato starch industry, based on its characteristics of high organic matter, high nitrogen and high phosphorus, a combined treatment process of protein recovery from processing wastewater and comprehensive wastewater land use with treatment scale of 30 m3/h process wastewater is adopted in a potato starch processing enterprises in Ningxia Guyuan to replace the traditional end biochemical treatment process of wastewater, and to analyze the environmental benefits, economic benefits and social benefits. The production and operation data show that the protein recovery rate, SS removal rate and COD removal rate of the combined treatment process were 40.93%, 54.76% and 19.2%, respectively. All the comprehensive wastewater was successfully returned to the field for utilization, indicating that the goal of designed process was generally achieved. The benefit analysis shows that the combined treatment process of the demonstration project can reduce the annual discharge COD, SS, total nitrogen, and total phosphorus by 6.64 t, 1.99 t, 1.99 t and 66.4 kg, respectively, compared with up-to-standard discharge of wastewater, and could increase the economic benefit of 610 thousand yuan after tax for the enterprise every year. In addition, it could increase the income of local farmers and realize the recycling of resources. The combined treatment model transforms the traditional end pollution input mode into resource utilization output mode, which better solves the problem of enterprise pollution control, and has significant economic and social benefits. It provides a new path for wastewater treatment in the potato starch industry.
Last Update:
2023-11-17