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首页> 外文会议>International Conference on Advances in Energy, Environment and Chemical Engineering >Recycling Nutrient by Integration of Pond Aquaculture and Aquatic Vegetable Cultivation
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Recycling Nutrient by Integration of Pond Aquaculture and Aquatic Vegetable Cultivation

机译：通过池塘水产养殖和水生蔬菜栽培的循环回收营养素

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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 COD_(Mn) 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 (NO_2)~--N, (NH_4)~+-N, TN, TP and COD_(Mn) from pond wastewater were 11.30%～26.27%, 8.30%～26.60%, 1.87%～20.60%, 11.0%～19.70% and 23.00%～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.
机译：该实验旨在评估从莲花（Nelumbo Nucifera）和甘蔗芽（Zizania Latifolia）培养场的水产养殖池塘流出物的营养素的回收率。结果表明，在保留水管理下，水产养殖废水中TN，TP和COD_（MN）上的甘蔗芽和莲藕试验坑的再循环率随保留时间而增加，其中TN和TP的差异是显着的当保留时间超过24小时时。在表面流动操作下，来自池塘废水的（NO_2）〜 - -N，（NH_4）〜+--N，TN，TP和COD_（MN）的去除效率为11.30％〜26.27％，8.30％〜26.60％，1.87 ％〜20.60％，11.0％〜19.70％和23.00％〜30.65％，流入流速为0.08 m〜3 / h和0.13 m〜3 / h。两种蔬菜试验坑的流出物的微生物分集指数显着高于保留水管理下的流入水，显着低于表面流动运行下的水中水。全面考虑，保留管理更优选，保留时间应超过24小时。目前的实验证实，莲花和水竹栽培领域的水产养殖废水的原位处理是可行的，在水产养殖废水中的回收营养物质以及减少营养污染排放的可行性和有效。池塘水产养殖和水产蔬菜生产的整合是环保，需要更多的研究来提供实际融合实践中的有效管理策略。

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