DING Jing,ZHANG Jian-liang,REN Ye,et al.Treatment of Dyeing Wastewater by a Combined Process of Coagulation, A/O, Flotation, Ozone, and Magnetic Coagulation[J].China Water & Wastewater,2021,37(20 20):112-115.
Treatment of Dyeing Wastewater by a Combined Process of Coagulation, A/O, Flotation, Ozone, and Magnetic Coagulation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
20 20
Page:
112-115
Column:
Date of publication:
2021-10-17
- Keywords:
- dyeing wastewater; coagulation; ozone; magnetic coagulation; A/O process
- Abstract:
- In order to effectively promote the relocation and agglomeration of printing and dyeing industry, a sewage treatment plant in Shaoxing adopted the combined process of coagulation, A/O, air flotation, ozone, and magnetic coagulation to treat the dyeing wastewater .The treatment capacity is 20×104 m3/d. It showed that the combined process has high treatment efficiency and strong shock loading resistibility. The final concentrations of effluent COD, total nitrogen, SS and chromaticity were 68 mg/L, 7.5 mg/L, 5 mg/L and 6 times, with removal rates of 95.9%, 81.7%, 98.7% and 99.5% respectively. The effluent could meet the direct discharge standard of Discharge Standards of Water Pollutants for Dyeing and Finishing of Textile Industry (GB 4287-2012) .The treatment cost of the project was 3.07 yuan/m3. This project applied ozone to treat printing and dyeing wastewater on a large scale with stable effect, which can provide reference for dyeing wastewater treatment in the industrial park.
Last Update:
2021-10-17