Pilot study on textile wastewater treatment by anaerobic filter reactor
厌氧滤池处理纺织印染废水的中试研究

A pilot scale of the anaerobic filter(AF) reactor was used to treat textile wastewater.The experimental result indicates that the average COD removal efficiency is 20% when the hydraulic retention time(HRT) of the AF is between 8.1~14.6 h and the influent COD concentration fluctuates between 500 mg/L and 1 000 mg/L.The BOD5/COD ratio of textile wastewater increases from 0.23 to 0.35 which demonstrates that biodegradability of the textile wastewater is improved significantly.The effluent sulfate concentration decreased during the operation period,and the removal concentration was about 70 mg/L during the operation period.The UV-Visible spectrums analysis suggests the degradation of influent organic materials.