摘要
采用水解酸化工艺可有效地提高工业废水中难生物降解有机物的可生化性，为后续好氧生化处理创造有利条件。本试验在对感光胶片废水采用水解酸化－活性污泥法工艺和常规活性污泥法进行平行对照试验的基础上，从生化反应动力学系数的角度研究水解酸化过程对好氧生化反应的影响。研究结果表明：经水解酸化处理后，在该废水的ＢＯＤ５／ＣＯＤＣｒ比值从０４６－０４８提高至０５４－０５６的同时，后续活性污泥系统的动力学半速度数Ｋｓ从常规活性污泥法的４５９毫克／升下降至１０３毫克／升，最大比降解速度Ｋ从３０／日上升至５０／日，可用于表征该工业废水可生化性和后续好氧化物处理效果改善和提高的程度。
The microbial degradation with two kinds of biological process,conventional activated sludge process and hydrolytic acidification-activated sludge process,was investigated to evaluate the bio-kinetic constants of film wastewater containing many kinds of synthetic organic matter The experimental results demonstrated that the biodegradability (BOD 5/COD Cr )of film wastewater could be raised from 0 46-0 48 to 0 54-0 56 by hydrolytic acidification,while saturation constant(K s)of the activated sludge process could be decreased from 459 mg/l to 103 mg/l and the maximum specific substrate utilization rate (K) raised from 3 0 d -1 to 5 0 d -1
出处
《四川环境》
1999年第1期5-8,共4页
Sichuan Environment
关键词
感光胶片
废水
水解酸化
生化动力学系数
Film wastewater, hydrolytic acidification, activated sludge process,biodegradability, bio-kinetic constants
