摘要
水蚤是多种人体寄生虫的中间宿主,自来水厂常用臭氧和氯灭杀水蚤。本文研究了臭氧和氯以及氯在不同pH值水体中抑制水蚤卵孵化的效应浓度。结果表明:①各臭氧处理组(1～6mg/L)中水蚤卵的孵化率(89.52%～97.85%)明显高于对照组(76.19%),臭氧对水蚤卵无灭活作用;②氯处理组(1～5mg/L)中水蚤卵的孵化率为66.67%～96.00%,其中80%样品高于实验组的孵化率(78%),氯对水蚤卵无灭活作用;③在偏酸或偏碱的水体环境(pH5～6,pH9),随氯浓度增加,对其孵化率有极显著的抑制作用;④臭氧与氯对水蚤成体的灭活率达90%以上。经分析认为,自来水厂水池中的水蚤来源于原水以及炭滤池、砂滤池水内死水蚤受精卵的孵化,是净水厂反复发生水蚤的主要原因。提出利用臭氧或氯有效控制水蚤发生的处理技术。本研究在净水处理工艺中控制水蚤孳生方面具有实际应用价值与指导意义。
：Copepoda were the intermediate host of a variety of human parasites, and waterworks commonly use ozone and chloride to eliminate them. This article explored the concentration effects on incubation of copepoda eggs, which were pro- duced by ozone and chlorine in different pH value in water. The results indicated that ： ①The hatching rate of copepoda eggs in experimental groups （89.52% - 97.85% ） treated by ozone （1 -6 rag/L） was significantly higher than that of control groups （76.19%）, which showed that ozone had no significant inhibitory effects on the hatch of copepoda eggs; ②The hatching rate of copepoda eggs in experimental groups treated by chlorine （1 -5 mg/L） was 66.67% -96.00% , 80% of which was higher than that of the control group （78%）. It showed that chlorine had no significant inhibitory effects on the hatch of copepoda eggs ; ③In partial acid or alkali water environment, the hatching rate was significantly decreased with the increasing concentration of chlorine; ④The inactivation rate of ozone and chlorine to copepoda adults exceeded 90%. Through analysis, that the copepoda eggs hatched after passing through carbon filters or sand filters of water purification was the main reason for repeated occurrence of the eopepoda existing. Consequently, a twice-a-week technology （ibrtnightly） based on ozone amt chlorine to control the copepoda existing was advised.
出处
《四川动物》
CSCD
北大核心
2012年第5期746-750,F0003,共6页
Sichuan Journal of Zoology
基金
"水污染控制与治理"国家重大科技专项(2009ZX07423-003
2009ZX07101-011-03)
深圳大学实验室开放基金项目
关键词
臭氧
氯
水蚤
卵
孵化率
饮用水
ozone
chloride
copepoda
egg
hatching rate
drinking water
