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中国农学通报 ›› 2016, Vol. 32 ›› Issue (29): 29-35.doi: 10.11924/j.issn.1000-6850.casb16070138

所属专题: 水产渔业

• 水产 渔业 • 上一篇    下一篇

新型流化床生物滤器处理海水养殖废水性能研究

张海耿,管崇武   

  1. 中国水产科学研究院渔业机械仪器研究所,中国水产科学研究院渔业机械仪器研究所
  • 收稿日期:2016-07-29 修回日期:2016-08-17 接受日期:2016-08-25 出版日期:2016-10-12 发布日期:2016-10-12
  • 通讯作者: 张海耿
  • 基金资助:
    中国水产科学研究院基本科研业务费专项“基于传质效应的流化床结构及工艺参数优化”(2015A02PT01);国家重点基础研究发展计划“可控水体中华鲟养殖关键生物学问题研究”(2015CB150700);“十二五”农村领域国家科技计划课题“水产设施养殖关键技术与装备研究”(2014BAD08B09)

Effluent Purifying Performance of New Style Fluidized-sand Biofilter in Recirculating Aquaculture System

  • Received:2016-07-29 Revised:2016-08-17 Accepted:2016-08-25 Online:2016-10-12 Published:2016-10-12

摘要: 为提升流化床生物滤器的水处理性能,优化滤器的工艺运行参数,研制了新型流化床生物滤器,并以玻璃珠为填料,将该生物滤器应用于斑石鲷循环水养殖系统,探讨了其对养殖水体中营养盐和有机物的去除效果。结果表明:新型流化床生物滤器实现了床层高度的稳定,避免了滤料的流失,优化了滤器内部的流态。在海水养殖工况下,新型流化床生物滤器经过一个月的自然挂膜,可实现滤器的成功启动。通过扫描电镜观察,挂膜前后生物膜载体表面发生了显著的变化。流化床生物滤器的硝化作用主要发生于床层的底部,表层对其贡献率不显著。在稳定工况下,新型流化床生物滤器对TAN、NO2--N、BOD5和SS 的去除率分别达到了(48.7±5.23)%、(64.28±9.88)%、(59.19±4.98)%和(40.06±10.21)%,对TAN的平均去除负荷达到了(245.2±50.5) g/(m3 ·d)。本生物滤器硝化性能及稳定性优于常规生物滤器,可为该滤器在循环水养殖系统中的高效运行和应用提供一定的技术支撑。

关键词: 栎, 栎, 生理指标, 花色素苷, 可溶性糖, 转色期

Abstract: In order to promote the performance of purifying effluent of fluidized-sand biofilter,and optimize technological operation data of biofilter. The new style fluidized-sand biofilter was developed, and the biofilter was applied to the Spotted parrotfish recirculating aquaculture systems,which was used micro glass bead as media. The removal effect of nutrient and organic in aquaculture water through fluidized-sand biofilter was discussed.The results showed that the biofilter realized the stability of the bed height, avoided the loss of the filter material , and optimization the flow pattern of internal filter. In mariculture conditions,the new style fluidized-sand biofilter could realize successfully start up after one month of natural hanging membrane. There was significant changes of the stuffing surface before and after the biofilm culturing,which was observed by scanning electron microscope.The nitrification of biofilter was mainly happened on the bottom of the bed. Under optimizing conditions,the average removal rate of TAN,NO2--N,BOD5 and SS were(48.7±5.23)%、(64.28±9.88)%、(59.19±4.98)% and (40.06±10.21)%, respectively,which showed a better performance of effluent treatment than normal biofilter.

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