BAC滤池无脊椎动物滋生对饮用水安全性的影响  

Influence of Invertebrate Colonization in Biological Activated Carbon (BAC) Filter on the Safety of Drinking Water

作　　者：李小伟[1,2] 刘丽君[3,4] 杨宇峰[2] 张金松[3,4] 

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]暨南大学水生生物研究所,广东广州510632 [3]深圳市水务集团,广东深圳518031 [4]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《湖南大学学报（自然科学版）》2008年第12期64-69,共6页Journal of Hunan University:Natural Sciences

基　　金：世博科技支撑项目资助(2007BAK27B05)

摘　　要：生物活性炭（Biological activated carbon，BAC）滤池能够为无脊椎动物提供理想的生境，但无脊椎动物可能给饮用水带来负面的健康效果和感观问题．2006年9月～2007年9月，对南方某水厂BAC滤池无脊椎动物滋生状况进行了为期13个月的调查研究，共发现无脊椎动物23种（属或类），优势类群为轮虫，其他类群还有桡足类、枝角类、寡毛类、无节幼体、线虫等．调查期间炭总管水无脊椎动物的平均密度是主臭氧后水的6．8倍．BAC滤池经过13个月的运行使用后，炭滤后水（1#和2#），炭层（#和2#），炭总管水无脊椎动物密度分别增长了3～17倍．BAC炭层富含无脊椎动物，最高密度可达52645个／k．相关性分析表明：水温对无脊椎动物生长有重要影响，夏季无脊椎动物密度通常高于冬季．这些发现表明：BAC滤池存在复杂的食物网关系，及由无脊椎动物引起的饮用水安全性风险．Biological Activated Carbon Filter （BACF） could provide ideal habitats for invertebrates, but invertebrates may lead to aesthetic problems and adverse health effects of drinking water. This paper studied the invertebrates in biological activated carbon filters in a water plant of the south of China during Sep. 2006 to Sep. 2007. The results implied that BAC filters were colonized by invertebrates, in which 23 species （genera or group） of invertebrates were found, the dominating organism group was the rotifer, and others included Copep- oda, Cladocera, Oligochaeta, Nauplii and Nematoda. The average density of invertebrates in collected filtrate was 6.8 times that in post-inter-ozonation water during the survey period. After BAC filters were used for 13 months, the densities of invertebrates in the filtrate （BACF 1# and 2# ）, the carbon layer （BACF 1# and 2#） and the collected filtrate increased by 3- 17 times. There were abundant invertebrates in carbon layers, in which the maximum of invertebrates arrived 52 645 ind./kg. The correlation analysis shows water temperature （WT） might have important influence on the growing of invertebrates and the densities in summer are often more than that in winter. These findings indicate the establishment of a complex food web and the potential risk of invertebrates to the safety of drinking water in BAG filters.

关 键 词：饮用水安全性 无脊椎动物 生物活性炭滤池 水温 

分 类 号：TU99[建筑科学—市政工程]