CHENZhi-bin,YUANHua-jie,WANGZhe-xiao,et al.Design of Pressurized Turbid Circulating Water Treatment System and Its Performance[J].China Water & Wastewater,2022,38(15):84-89.
Design of Pressurized Turbid Circulating Water Treatment System and Its Performance
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第15期
Page:
84-89
Column:
Date of publication:
2022-08-01
- Keywords:
- pressurized system; turbid circulating water; vortex; computational fluid dynamics; sludge circulation
- Abstract:
- There are many problems in traditional turbid circulating water treatment system (such as horizontal sedimentation tank and chemical oil removal device) in steel enterprises, such as water quality not up to discharge standard, too much lifting, inconvenience of sludge discharge and high dosage of chemicals. A pressurized turbid circulating water treatment system was thus designed to solve these problems. Spiral center cylinder was applied to enhance the mixing and accelerate the formation of steel slag particle flocs in raw water. The negative pressure jet structure realized the sludge circulation without energy input, increased the particle size of the floc and improved the precipitation efficiency. The close pressurized operating environment was applied to reduce the lifting links, improve the efficiency of sludge discharge, and maintain the cleanliness of the surrounding environment. Computational fluid dynamics (CFD) software was employed to simulate the flow regime change inside the system, and the treatment performance of real water sources was verified by engineering tests, which indicated that the actual operation of the system reached the expected goal.
Last Update:
2022-08-01