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复合生物过滤技术在水产养殖废水处理中的应用研究进展   总被引:1,自引:1,他引:1  
介绍了复合生物过滤技术的概念、原理、特点,以及植物滤器与微生物滤器复合生物过滤技术、动物滤器与植物滤器或微生物滤器过滤等主要几种复合生物过滤技术在实际生产中的应用,探讨了复合生物过滤技术在养殖废水处理中的发展趋势。  相似文献
2.
采用人工湿地与功能性滤料相结合的方式对工厂化养殖污水进行处理,测试结果显示处理后水质各项指标都达到甚至高于国家规定的养殖用水的指标要求,养殖水NH4+-N由最高3.0 mg/L降到0.2 mg/L,NO2--N由最高4.0 mg/L降到0.2 mg/L。测试结果说明该项水处理技术是一个投资少、能耗低、水质改良效果理想的实用技术。  相似文献
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Waste water treatment on freshwater fish farms is problematic as waste material and water flows can vary greatly on a daily basis, and, in terms of effluent standards, fish farm effluent represents a dilute waste water output. A study was undertaken to investigate in detail the nature of the waste outputs under field conditions. Waste water samples were split by meshes into the following size ranges: >200μm, 200-100μm, 100-60μm, 60-30μm and <30μm. Waste water quality parameters, suspended solids (SS), biochemical oxygen demand (BOD5) and total phosphorus (TP) were examined for each size range at two freshwater fish farm sites in Scotland, as part of a wider investigation into waste water quality of aquaculture operations. Results indicated that during periods of peak waste output i.e. tank cleaning, approximately 80% of BOD5 and SS was present in a particle size range of 100-60μm, but only 66% of TP transport occurred in this size range. At other times, low levels (≤40%) of entrapment of wastes by the chosen meshes was observed, suggesting a reversion to predominantly dissolved material transport. Compared against a larger data set of outflow concentrations obtained from another section of the study, maximum removal rates of 46%, 48% and 30% for BOD5, SS and TP respectively were determined. The implications for waste water treatment at fish farms are discussed.  相似文献
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