【摘要】 [目的]筛选对养殖废水具有脱氮除磷效果的微藻藻种。[方法]选取小球藻JY-1（Chlorella sp.JY-1）、小球藻SY-4 （Chlorella sp.SY-4）以及链带藻SH-1（Desmodesmus sp.SH-1）等3株微藻为研究对象,研究其对水产养殖废水脱氮除磷的效果。[结果]培养5d,JY-1、SY-4和SH-1在7‰±1‰盐度养殖废水中的细胞含量分别为1.56×10⁷、1.47×10⁷、6.62×10⁶个·mL^-1;JY-1、SY-4和SH-1对养殖废水中总氮的去除率分别为50.36%、41.51%和49.74%;氨态氮（NH₄⁺-N）的去除率分别为96.29%、84.92%和96.65%;硝态氮（NO₃^--N）的去除率分别为15.84%、3.69%和12.56%;总磷(PO₄^3--P)的去除率分别为93.51%、82.38%和94.25%;对亚硝态氮的去除效果不明显;3株藻在5‰、10‰、20‰和30‰盐度的培养基中均可以正常生长。JY-1在养殖废水中的生长能力和对水体净化能力均优于小球藻SY-4和链带藻SH-1。[结论]小球藻JY-1对水产养殖废水具有较好的脱氮除磷效果。本研究为应用微藻进行养殖废水脱氮除磷处理提供了参考数据。更多还原

【Abstract】 [Objective] Microalgae capable of effectively removing nitrogen and phosphorus from wastewater were screened for potential applications on antipollution or effluence treatment at aquaculture farms.[Method] Three selected microalgae,Chlorella sp.JY-1,Chlorella sp.SY-4,and Desmodesmus sp.SH-1,were evaluated for their capability in removing nitrogen and phosphorus from the wastewater at a shrimp aquaculture farm.[Result] After 5 d of cultivation,the microalgae grew to a cell density in the（7±1）‰ salinity medium at 1.56×10⁷·ml^-1 on JY-1,1.47×107·ml^-1 on SY-4,and 6.62 × 10⁶·ml^-1 on SH-1.The removal rate on total nitrogen was 50.36% by JY-1,41.51% by SY-4,and 49.74% by SH-1;that on ammonia nitrogen,96.29% by JY-1,84.92% by SY-4,and 96.65% by SH-1;that on nitrate nitrogen,15.84% by JY-1,3.69% by SY-4,and 12.56%by SH-1;and,that on total phosphorus,93.51% by JY-1,82.38% by SY-4,and 94.25% by SH-1;but not significant on nitrite nitrogen by any of them.The microalgae appeared to grow normally in a culture medium of 5%,10%,20% or 30% salinity.Among them,Chlorella sp.JY-1 performed the best on growth as well as nitrogen and phosphorus removal in the test wastewater.[Conclusion] Chlorella sp.JY-1 appeared to offer a promising potential for application of purifying aquaculture effluence.更多还原