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):112-115.
混凝+A/O+气浮+臭氧+磁混凝工艺处理印染废水
- Title:
- Treatment of Dyeing Wastewater by a Combined Process of Coagulation, A/O, Flotation, Ozone, and Magnetic Coagulation
- Keywords:
- dyeing wastewater; coagulation; ozone; magnetic coagulation; A/O process
- 摘要:
- 为有力助推印染产业搬迁和集聚，绍兴某污水处理厂采用混凝+A/O+气浮+臭氧+磁混凝工艺处理集聚区内综合印染废水，处理水量为20×104 m3/d。运行结果表明，该工艺处理效率高，抗冲击负荷能力强，对COD、总氮、SS和色度的去除率分别达到95.9%、81.7%、98.7%、99.5%，最终出水COD、总氮、SS、色度分别为68 mg/L、7.5 mg/L、5 mg/L、6倍，达到《纺织染整工业水污染物排放标准》（GB 4287—2012）的直接排放标准，处理成本为3.07元/m3。该工程将臭氧氧化大规模应用于印染废水处理，效果稳定，可为工业园区综合印染废水处理提供参考。
- 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.
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