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Recycling Nutrient by Integration of Pond Aquaculture and Aquatic Vegetable Cultivation

文献类型： 外文期刊

作者： Tao, Ling 1 ; Zhu, Jianqiang 1 ; Li, Gu 2 ; Li, Xiaoli 2 ;

作者机构： 1.Yangtze Univ, Minist Educ, Engn & Res Ctr Ecol Wetland & Agr Use, Jingzhou 434025, Peoples R China

2.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China

3.Freshwater Aquaculture Collaborat Innovat Ctr Hub, Wuhan 430070, Peoples R China

关键词： Pond aquaculture;aquatic vegetable;wastewater purification;Biolog Eco-plate;Microbial diversity

期刊名称：PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCES IN ENERGY, ENVIRONMENT AND CHEMICAL ENGINEERING

ISSN： 2352-5401

年卷期： 2015 年 23 卷

页码：

收录情况： SCI

摘要： This experiment was designed to assess the recovery of nutrient from aquaculture pond effluent by lotus (Nelumbo nucifera) and cane shoot (Zizania latifolia) cultivation field based on the pit-testing experiment. The results showed that under retention water management, the recycling rate of cane shoot and lotus root test pit on TN, TP and CODMn in the aquaculture wastewater was increased with the retention time, in which the difference of TN and TP was significant when the retention time was longer than 24 h. Under surface flow operation, the removal efficiency on NO2--N, NH4+-N, TN, TP and CODMn from pond wastewater were 11.30%similar to 26.27%, 8.30%similar to 26.60%, 1.87%similar to 20.60%, 11.0%similar to 19.70% and 23.00%similar to 30.65% with the influent flow rate of 0.08 m(3)/h and 0.13 m(3)/h. The microbial diversity indices of effluent from both the two vegetable test pits were significantly higher than those of influent water under the retention water management and significantly lower than those of influent water under surface flow operation. Comprehensively considering, retention management is more preferable and retention time should be longer than 24 h. The present experiment confirmed that ex-situ treatment of aquaculture wastewater by lotus and water bamboo cultivation field is feasible and effective in recycling nutrients in the aquaculture wastewater and reducing nutrient pollution discharge. The integration of pond aquaculture and aquatic vegetable production are environmentally friendly and more research is needed to provide efficient management strategies during the practical integration practice.

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