碱减量印染废水处理技术

Treatment Technology of Wastewater from Alkali-Decrement Process and Dyeing Printing

涤纶碱减量废水碱性强、COD高,处理难度大。分析了各种处理技术及存在的问题,提出了对该废水进行酸析单独处理,回收资源后再与印染废水混合进行水解酸化-生物接触氧化工艺处理,以期环境效益与经济效益的统一。

Alkali-decrement wastewater is difficult to treat due to its strong alkalinity and high oxygen demand. Treatment technology of wastewater and its existing problems from alkali-decrement process were reviewed. The wastewater should be treated by acidation pretreatment to recover the useful materials from it, and then, treated again by anaerobic-biological contact oxidatioin technology after mixing it with the wastewater of dyeing printing. All of these will contribute to both environmental and economical benefits.