LIBin-bin,XUXiao-ping,ZHAOChang-shuang,et al.Annual Variation Characteristics of Rotifer Breeding in Biological Activated Carbon Filters[J].China Water & Wastewater,2025,41(13):87-93.
生物活性炭滤池中轮虫滋生周年变化特征
- Title:
- Annual Variation Characteristics of Rotifer Breeding in Biological Activated Carbon Filters
- Keywords:
- drinking water; biological activated carbon filter; rotifer; abundance
- 摘要:
- 为探究饮用水生物活性炭处理工艺中轮虫的滋生情况，对我国华东地区某水厂不同处理单元开展了为期一年的水质检测和轮虫采集、鉴定工作。结果发现，除pH外，其他水质指标全年变化明显，炭滤池出水菌落数显著高于炭滤池进水。全年水厂进水、炭滤池进水、炭滤池出水和砂滤池出水共检出轮虫分别为27、11、25和6 种，平均密度分别为4.33×104、3.18×103、3.04×104和3.13×103 ind./m3，轮虫丰度与温度、溶解氧和菌落数等显著相关。混凝、沉淀和臭氧氧化工艺能明显降低水厂进水中轮虫的种类和数量，炭滤池是轮虫滋生的主要场所，后置砂滤池可有效降低炭滤池中滋生的轮虫种类和数量。水厂进水的优势种为螺形龟甲轮虫和针簇多肢轮虫，炭滤池进水的优势种为盖氏晶囊轮虫，而炭滤池出水和砂滤池出水中优势种则均为月形腔轮虫，提示底栖类轮虫更容易在炭滤池和砂滤池中滋生，应作为重点控制的种类。
- Abstract:
- A one-year water quality analysis and systematic rotifer collection and identification were conducted across various treatment units of a water plant located in East China, to investigate the breeding conditions of rotifers in the biological activated carbon treatment process for drinking water. Aside from pH, the annual variations in other water quality indicators were substantial. The effluent of the activated carbon filter exhibited a significantly higher number of colony count compared to the influent. Throughout the year, a total of 27, 11, 25, and 6 rotifer species were identified in the influent of the water plant, the influent of the activated carbon filter, the effluent of the activated carbon filter, and the effluent of the sand filter, respectively. The average density were 4.33×104 ind./m3, 3.18×103 ind./m3, 3.04×104 ind./m3, and 3.13×103 ind./m3, respectively. The abundance of rotifers exhibited significant correlations with water quality parameters, including temperature, dissolved oxygen, and colony count. The processes of coagulation, sedimentation, and ozone oxidation substantially decreased the species and quantity of rotifers in the influent of the water plant. The activated carbon filter served as the primary breeding habitat for rotifers, while the subsequent sand filter effectively mitigated the species and quantity of rotifers originating from the activated carbon filter. The dominant species in the influent of the water plant was Keratella cochlearis and Polyarthra trigla, the influent of the activated carbon filter was Asplanchna girodi, respectively. In contrast, the dominant species in the effluent of the activated carbon filter and the effluent of the sand filter were both Lecane buna. These findings indicate that benthic rotifers have a higher propensity to proliferate within the activated carbon filter and the sand filter and should therefore be considered as key species requiring control.
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