摘要
采用电解/水解酸化/好氧活性污泥工艺处理高浓度、难降解的医药生产废水,着重考察了HRT、温度、pH、溶解氧及污泥负荷对好氧段处理效果的影响。结果表明,电解/水解酸化提高了废水的可生化性,在HRT为18h、温度为24℃、pH值为6.5～7.0、溶解氧为2.5mg/L以及污泥负荷为0.42～0.50kgCOD/(kgMLSS.d)的条件下,好氧段对COD的去除效果较好,去除率基本稳定在90%左右,出水水质满足《污水综合排放标准》(GB8978—1996)的二级标准。
Electrolysis/hydrolysis acidification/aerobic activated sludge process was used for treatment of high strength and refractory wastewater from pharmaceutical industry. The influence factors such as HRT,temperature,pH,DO and sludge load on treatment effect at aerobic stage were investigated. The results show that the electrolysis and hydrolysis acidification improve the wastewater biodegradability. The good COD removal effect can be obtained when HRT is 18 h,temperature is 24 ℃,pH is 6.5 to 7.0,DO is 2.5 mg/L...
出处
《中国给水排水》
CAS
CSCD
北大核心
2009年第23期64-65,68,共3页
China Water & Wastewater
基金
天津市科委重点科技攻关项目(06YFGZGX00300)
关键词
医药废水
电解
水解酸化
活性污泥法
HRT
污泥负荷
pharmaceutical wastewater
electrolysis
hydrolysis acidification
activated sludge process
HRT
sludge load
