摘要
对虾集约化养殖在产生巨大经济效益的同时,也由于其排出废水中含有机N(P)等营养物而对近岸海域造成严重污染。本试验在集约化对虾养殖池排水沟中进行,分别向排水沟废水中投入有益菌(光合细菌和芽孢杆菌)及细基江蓠繁枝变种(Gracilarla tenuistipitataVar.liui)形成"菌+菌"的细菌组和"藻+菌"的混合组,比较研究16 h内排水沟废水中各营养盐指标的变化趋势。结果表明,在06:00到22:00的时间里,随着水温的低—高—低变化和光照强度的弱—强—弱变化,投放细基江蓠繁枝变种组NH4-N,NO3-N,PO4-P等含量均呈现不同程度的先大幅下降,在14:00达到相对低值之后又小幅上升的过程;细菌(光合细菌和芽孢杆菌)组则只对NO2-N和CODMn有较好降解效果。同时发现细基江蓠繁枝变种在黑暗条件下仍然可以吸收无机N和无机P等营养盐;但对水中NO2-N和有机质的降解作用不明显。
The intensive shrimp culture has become an important industry in China. The dissolved inorganic nitrogen （phosphorus） and dissolved organic nitrogen （hosphorus）, which discharged from the aquaculture ponds, are the main pollutions. The rapid development of the intensive shrimp culture has aroused increasing the concern over its impacts on the water environment in the coastal waters. Reducing negative environmental impacts is a key to ensure healthy and sustainable development of this industry. In recent years, G. tenuistipitata Var.liui and probiotics（ PSB and Bacillus sp. ） are applied to purify the aquiculture effluent. In the way, the probiotics turns the wastes in effluent into the nutrition of G. tenuistipitata Var.liui. Such a balanced ecosystem approach provides the nutrient bioremediation capability. The effluent nutriation variety current was studied in the paper when probiotics （ SB and Bacillus sp. ） and G. tenuistipitata Var.liui were put into respectively. Three groups were built that which are the control groups, probiotics groups and G. tenuistipitata groups. （Considering the probiotics which has been in the effluent, the probiotics groups is ＂probiotics ＋ probiotics＂, the G. tenuistipitata groups is ＂G. tenuistipitata ＋ probiotics＂）. The experiment was conducted in the effluent ditch from 06：00 to 22：00. The result show that with the water temperature and the illumination intensity fluctuated low-high-low, G. tenuistipitata groups made NH4-N,NO3-N,PO4-P reduced a great extent, then increase a little after the lowest point 14：00. The probiotics can degrade NO2-N and CODMn only. G. tenuistipitata Var. liui can uptake the dissolved inorganic nitrogen and phosphorus in dark, but can not degrade NO2-N and CODMn effectively.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2008年第4期327-330,共4页
Marine Environmental Science
基金
国家十五科技攻关项目(2004BA526B0202)
广东省重大科技专项(A30501001)
广东省重大科技兴渔项目(B200201A01)
