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探讨了运移式简易滤器构制、亲虾池循环水培养生物膜可行性及其硝化性能。实验以常用滤料(沸石+纤维球+生化环=30.9 kg)与塑料桶(70 L)制成两个相同简易生物滤器Ⅰ、Ⅱ,滤器置于手推车可运移于车间各处净化池水。以亲虾越冬池(4 m~3)循环水(0.231、0.138 m~3/h流量)可简便培养滤器生物膜与有效净化虾池水质。结果表明:约经17 d以循环虾池水培养生物膜获成熟,并能有效降低池水TAN、NO_2~--N浓度;实验37 d,两滤器对TAN平均去除率分别为40.23%与45.3%,对NO_2~--N为58.4%与65.1%;两滤器TAN平均去除速率分别为0.138、0.081 mg/(m~2·d),NO_2~--N平均去除速率为0.053、0.035 mg/(m~2·d)。滤器Ⅰ与Ⅱ均具较强处理TAN、NO_2~--N的硝化能力,且无显著差异(P>0.05)。
The feasibility of nitrification and biofilm formation in the culture of brooder pond by circulating simple filter was discussed. Experiments using the common media (zeolite + fiber ball + biochemical ring = 30.9 kg) and plastic buckets (70 L) made of two identical simple biological filters Ⅰ, Ⅱ, the filter placed in the cart can be moved around the workshop to purify the water. In order to facilitate the culture of filter biofilm and water quality of shrimp ponds, the overwintering pond (4 m ~ 3) circulating water (0.231,0.138 m ~ 3 / h) can be easily cultured. The results showed that: after 17 d, the biofilms were ripened by recirculating shrimp pond water, and the concentration of TAN and NO 2 --N in the pond water could be effectively reduced. On the 37th day, the average removal rates of TAN by two strainers were 40.23% and 45.3% 58.4% and 65.1% for NO_2 ~ -N, respectively. The average TAN removal rates of the two filters were 0.138 and 0.081 mg / (m ~ 2 · d), respectively, and the average NO 2 - -N removal rates were 0.053 and 0.035 mg / ~ 2 · d). Both filters Ⅰ and Ⅱ have strong nitrification ability of TAN and NO_2 ~ - N, and no significant difference (P> 0.05).