摘要：

采用在水解酸化池投加FeSO₄的方法来对"水解酸化—好氧氧化"(A—O)工艺进行改进。对比了水解酸化池有无投加FeSO₄时,A—O工艺系统的运行结果,同时研究了FeSO₄投加量对A—O工艺处理效果的影响。结果表明,投加了FeSO₄的COD和色度的去除效果均好于未投加FeSO₄的,当进水水质为COD 653mg/L、色度480倍、pH=9.2、水解酸化池的反应时间为7h、FeSO₄投加量为30mg/L时,去除效果最佳,再经好氧反应器处理7h后,出水水质为COD 88mg/L、色度52倍。

关键词: 硫酸亚铁, 水解酸化, 好氧氧化, 印染废水

Abstract:

The method of putting FeSO₄ into hydrolytic acidification tank has been used in order to improve the treatment processes of hydrolytic acidification plus aerobic oxidation（A-O）. The experimental results are compared by using the A-O system under the conditions of with FeSO4 and without FeSO₄ respectively. The changing trends of COD， chromaticity and pH are discussed. Meanwhile， the treatment efficiency under different dosages of FeSO₄ is discussed. The results indicate that the removed efficiency of COD and chromaticity under the condition of with FeSO₄ are much better than the result of under the condition without FeSO₄. When influent COD， chromaticity and pH are 653 mg/L， 480 times and 9.2 respectively， and reaction time is 7 h in hydrolytic acidification tank， and the dosage of FeSO₄ 30 mg/L， the optimum resultsare obtained. After it is treated with the aerobic reactor， the effluent COD 88 mg/L， chromaticity 52 times.

Key words: FeSO₄, hydrolytic acidification, aerobic oxidation, printing and dyeing wastewater

中图分类号: 

• TQ314.253

• X703.1