摘要
提出聚乙烯醇包埋活性炭与微生物的固定化技术，给出较好的制备工艺，并对有机磷农药水胺硫磷的降解进行了试验研究。结果表明，经固定的微生物对温度、ｐＨ值和水样水胺硫磷浓度的适应范围扩大。在３个月连续试验中，若水样初始ＣＯＤＣｒ浓度为１３００—２５００ｍｇ／Ｌ，停留时间２４ｈ，在恒温摇床（３０℃，１５０ｒ／ｍｉｎ）内降解，其去除率为５５％－７２％。
A technology has been developed for immobilizing microorganism on an activated carbon which has been entrapped by using polyvinyl alcohol(PVA)as an entrapping agent. The preferable preparation processes were given for such an immobilization. The trial study on application of this technology to degradation of isocarbophos, an organophosphorus pesticide,was conducted.The results show that the immobilized microorganism can be effective in a wider range of temperatures, pH values, and concentrations of isocarbophos in water. During a 3 month period of continuous operation,55%-- 72%of the pesticide were removed from water if it had an initial concentration of 1300-- 2500mg/ L by CODe,in water and was degraded in a thermostatic vibratile table(30℃,150rpm)for 24 hours(HRT).
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1994年第3期11-14,共4页
Environmental Science
基金
国家自然科学基金
关键词
固定化微生物
聚乙烯醇
有机磷农药
isocarbophos,immobilized microorganism,PVA,activated carbon,organophosphorus pesticides.
