生物处理含盐污水的盐抑制动力学  

Salt inhibition kinetics in biological treatment of saline wastewater

作　　者：崔有为[1] 王淑莹[1] 甘湘庆 姜桂莲[1] 李桂星[3] 袁一星[1] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100022 [2]涪陵师范大学化学系,重庆408003 [3]中国市政工程东北设计研究院大连分院,大连116600

出　　处：《环境污染治理技术与设备》2005年第5期38-41,共4页Techniques and Equipment for Environmental Pollution Control

基　　金：北京市重点实验室资助项目;北京市重点实验室开放基金资助项目

摘　　要：生物处理含盐污水时,由于无机盐对生物系统的影响,常常会导致低的有机物去除速率和去除效率.为了定量盐度对有机物生物去除的影响,研究生物处理含盐污水的盐抑制动力学,为具体设计含盐污水生物处理过程提供依据.试验采用间歇活性污泥法,对含盐污水的有机物降解速率和去除效率进行了研究.为了获得基本数据,首先研究了淡水环境下的基质降解动力学,然后对10～35g/L盐度环境分别进行试验.试验发现,盐度对生物处理系统的抑制属于非竞争模式,同时影响了最大降解速率和饱和常数.试验确定的盐抑制常数KY为2333 mg/L,并进一步给出了各盐度下有机物降解速率方程.The performance of biological treatment processes for saline wastewater is usually low due to adverse effects of salt on microbial flora. High salt concentration in wastewater can result in low COD removal rate and efficiencies. In order to quantify the effects of salt on organic pollutant removal and supply basic information for the design of treatment system for saline wastewater, the salt inhibition kinetics in biological treatment of saline wastewater was investigated by using a sequence activated sludge unit. In order to obtain baseline information, initial experiments were performed with fresh wastewater. Experiments with 10~30 g/L salt concentration were then done to investigate the system performance and salt inhibition effects on kinetic constants. The results indicated that salt inhibition was non-competitive model affecting both the maximum rate and the saturation constants. Salt inhibition constants were determined by experimental data as K Y 2333 mg/L.The rate equations under different salt concentration conditions were further determined by experimental data.

关 键 词：抑制动力学 含盐污水 基质降解动力学 生物处理系统 去除效率 降解速率 活性污泥法 有机物降解 生物系统 去除速率 处理过程 基本数据 淡水环境 抑制常数 速率方程 盐度 试验 无机盐 水生物 

分 类 号：X703[环境科学与工程—环境工程] TQ658[化学工程—精细化工]