LI Jian,WANG Hai-mei,BAI Xiao-li,et al.Development and Engineering Application of Composite Sedimentation Tank[J].China Water & Wastewater,2021,37(12 12):31-35.
Development and Engineering Application of Composite Sedimentation Tank
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
12 12
Page:
31-35
Column:
Date of publication:
2021-06-17
- Keywords:
- composite sedimentation tank; development; water supply treatment; horizontal flow sedimentation tank; tube settler
- Abstract:
- With the actual projects, this paper introduces the development and operation effect of the composite sedimentation tank. The composite sedimentation tank is a combination of the horizontal flow sedimentation tank and the tube settler. A horizontal flow sedimentation tank with the length of 12-25 m is set in front of the tube settler. As a result, a large amount of aluminum flocs and sludge are precipitated in front of the horizontal flow sedimentation tank, which reduces the sludge loading rate of the tube settler and avoids sludge accumulation in front of the tube settler. By setting up a mud scraper at the bottom of the sedimentation tank and combining with the tube settler technology, the problem of poor sludge discharge in the sedimentation tank is completely solved. The composite sedimentation tank was especially suitable for water quality with low-temperature and low-turbidity in winter, also for high-turbidity in summer, which has the advantages of simple structure, strong applicability, low operation cost, saving land occupation and investment.
Last Update:
2021-06-17