文章摘要
曹广斌.双层浮球生物滤器设计及其水产养殖水处理性能试验[J].水产学报,2005,29(4):
双层浮球生物滤器设计及其水产养殖水处理性能试验
Study on design and performance of two-layer floating bead biofilter for recirculating aquaculture system
投稿时间:2014-03-11  修订日期:2014-03-11
DOI:
中文关键词: 浮球 生物滤器 水产养殖 处理性能
英文关键词: bead biofilter aquaclture treatment performance
基金项目:科技部社会公益研究项目
作者单位地址
曹广斌 中国水产科学研究院黑龙江水产研究所 中国水产科学研究院黑龙江水产研究所
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中文摘要:
      工厂化水产养殖水体的处理主要包括增氧、分离(分离固体物和悬浮物)、生物过滤(降低BOD、氨氮和亚硝酸盐)、曝气(去除二氧化碳等)和杀菌消毒等处理过程.
英文摘要:
      Based on the filtration of sand filter bed, a solid and nitrification biofilter of floating plastic bead was designed and tested. In the biofilter, the bead was layered automatically in water according to the size and gravity of plastic bead. With two types of diameter 5 mm gravity 0.94 and diameter 2 mm gravity 0.5 beads, the biofilter performed well in solid separation and ammonia nitrification. The bead filter performances were tested in a recirculating aquaculture system. When pump power was 0.75 kW and flow quantity was 20 m^3?h-1, the recirculating culture system could support 10 m^3 water in culture density of 16 kg?m^-3 Amur sturgeon. Suspended solid filtering rate was 90% and ammonia nitrification capacity was 149 g?m^-3?d^-1 Within water exchanged period of two weeks, the water quality was as following, SS≤ 100 mg?L^-1, Ammonia≤ 1.0 mg?L^- 1, Nitrites≤0.18 mg?L^-1 and Nitrate 24≤mg?L^-1. After 15 days' culture, fish survival rate was 99% and growth rate was 50%. The experiment result showed that the bead biofilter could meet the need of recirculating aquaculture system in solid seoaration and ammonia nitrification.
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