摘要
通过海藻酸钠固定化微生物小球对淡水养殖废水中活性磷、氨态氮、硝态氮、亚硝氮、化学需氧量质量浓度的影响,研究海藻酸钠固定化微生物处理淡水养殖废水的可行性。结果显示,海藻酸钠小球在养殖废水中极易溶解,不仅造成水体浑浊,且原生动物等可能以海藻酸钠为营养基而大量繁殖,进而导致水体缺氧,化学需氧量、氨氮等质量浓度不降反升,固定化微生物对废水的净化作用则难以显现。由此可见,以海藻酸钠为材料进行微生物固定化不适用于淡水养殖废水的净化处理。
The treatment feasibility of aquaculture effluent with sodium alginate immobilized microorganisms was studied by monitoring the concentrations of ammonia nitrogen,nitrate nitrogen,nitrite,orthophosphate and COD.It was found that the pellets of sodium alginate were dissolved easily in freshwater aquaculture wastewater,and made the test water torridness,leading to oxygen deficiency,and high levels of ammonia nitrogen and COD derived from multiplication of protozoa.In other words,there was no decontamination to the aquaculture effluent using the sodium alginate globule fixed with microorganisms.It may be inferred that sodium alginate as fixing agents for microorganisms was not applicable for the treatment of fresh water aquaculture effluent.
出处
《水产科学》
CAS
北大核心
2011年第8期476-480,共5页
Fisheries Science
基金
国家公益性行业(农业)科技项目(鳗鱼3-51)
集美大学博士启动基金资助项目(4412/Z80112)
关键词
海藻酸钠
固定化微生物
淡水养殖污水
原生动物
sodium alginate
immobilized microorganism
freshwater aquaculture effluent
protozoon
