摘要
研究一氯苯，１，２，３－三氯苯及六氯苯对模拟氧化塘系统生物群落结构的影响及其净化机制。结果表明，在５．６０９５ｍｇ／ｌ的一氯苯，１．９２９２ｍｇ／ｌ的１，２，３－三氯苯及０．１３６３ｍｇ／ｌ的六氯苯实验条件下，系统中杆菌属（Ｂａｃｔｅｒｉｕｍ）、微球菌属（Ｍｉｃｒｏｃｏｃｃｕｓ）及酵母菌属（Ｓａｃｃｈａｒｏｍｙｃｅｓ）的种类、密度影响不明显；对浮游藻类的种、数量及叶绿素ａ的合成有明显地抑制作用，其影响大小的顺序为：六氯苯＞１，２，３－三氯苯＞一氯苯。在模拟氧化塘系统中，氯苯类能够降解，在多级串联塘中水力停留７ｄ，３种氯苯去除率均高达９９％以上。实验表明自然挥发是主要的净化机制，微生物分解居第２位，藻类对氯苯类的去除也有一定作用。
This paper deals with the effects of chlorobenzene (CB), 1, 2, 3-trichlorobenzene(1,2, 3-TCB) and hexachlorobenzene (HCB) on aquatic community structure (and function) in simulation 4-cell stabilization pond systems. The purification of three chlorobenzenes in systems are also discussed. The results show that the specific diversity and densities of Bacterium,Micrococcus and Saccharomyces species of microorganisms were not affected while the specific diversity, density and chlorophyll a synthesis of the algae were inhibited significantly. The inhibition order was: HCB>1, 2, 3-TCB>CB.Chlorobenzenes could be removed in high rate in the simulation pond systems. The remove rate reached as high as >99% of all 3 pollutants in effluents after 7 day retention time.Most of chlorobenzenes were emitted into the air and some were degraded by organisms and algae.
出处
《生态学报》
CAS
CSCD
北大核心
1996年第5期484-489,共6页
Acta Ecologica Sinica
基金
国家自然科学基金
关键词
环境生态学
氯苯类
污染
模拟氧化塘
生物群落
chlorinated benzenes, community effects, perification, simulation stabilization pond systems.
