弧形筛及生物净化池净化陆基工厂化海水养殖废水的效果

为了研究陆基工厂化海水养殖废水理想的净化工艺，对山东省烟台市1个大型海水养殖厂的“弧形筛＋4级生物净化池”的废水净化系统进行了各项水质指标的定量检测。结果表明：系统对悬浮物与无机氮和无机磷的去除效果明显；经该系统处理后，养殖废水的溶解氧、pH值、电导率、温度和盐度在排放前已经达到自然海水的常规值；系统中的细菌总量和弧菌总量依废水流入的次序，在各级净化池之间呈现了下降趋势；净化池中底栖单胞藻则体现了丰富的生物多样性。利用废水净化池进行刺参养殖，还可创造显著的经济效益。研究结果证明，该套系统易于建造、废水处理能力强，是一种适合中国国情的理想的陆基工厂化海水养殖废水处理模式。

Effluent purification effect of system in sieve bend combined with four grade biological cleansing ponds in industrialized mariculture

Mariculture wastewater treatment effect was quantitatively measured in the "sieve bend combined with four grade biological cleansing ponds" wastewater treatment system in one indoor fish farm at Yantai city, Shandong province, China. Experiments results showed that the removal effect of suspended solids, total inorganic nitrogen and total inorganic phosphorus was obvious in this system. Dissolved oxygen, pH, conductance, temperature and salinity of the wastewater had reached the normal value of the natural seawater before discharge. The total amount of bacteria and vibrio showed a downward trend in different ponds along with the wastewater inflowing. Demersal unicellular algae in the biological cleansing ponds were rich regarding biodiversity. Farming sea cucumber in the last two wastewater treatment ponds also created significant economic benefits. It was demonstrated that this system with low construction costs and large wastewater treatment capacity was a suitable mode for land-based industrialized mariculture wastewater treatment in China.