HUANGJun-jie,CHENGShun-jian.Design of Wastewater Treatment Plant Expansion and Upgrading Project with Limited Health Protection Distance[J].China Water & Wastewater,2022,38(20):55-60.
Design of Wastewater Treatment Plant Expansion and Upgrading Project with Limited Health Protection Distance
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第20期
Page:
55-60
Column:
Date of publication:
2022-10-17
- Keywords:
- expansion and upgrading; health protection distance; general layout; intensive design; deodorization
- Abstract:
- The development of the city leads to the lack of health protection distance from the surrounding sensitive points, which has become the main factor restricting the implementation of wastewater treatment plant expansion and upgrading projects. The original scale of a wastewater treatment plant in Fuzhou was 1.5×104 m3/d, and now it needs to be expanded to 3×104 m3/d. In addition, the effluent quality is required to upgrade from first level B standard to first level A standard, and the sludge water content needs to be reduced from 80% to 60%. However, health protection distance of the expansion and upgrading project is limited. The wastewater treatment process of improved A2/O, high density sedimentation tank and precision filter and the sludge treatment process consisting of sludge thickening tank, conditioning tank and van-typed diaphragm filter press ensured that the effluent quality and sludge water content stably met the standard. The health protection distance was reduced by optimizing the general layout, adopting intensive design and covering for deodorization, which had passed the environment impact assessment demonstration and acceptance.
Last Update:
2022-10-17