| 侯晓翠，卢薛，刘凌志，李桂峰.工厂化养殖系统对养殖花鳗鲡过程的水处理效果[J].广东农业科学,2013,40(24):165-171 |
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工厂化养殖系统对养殖花鳗鲡过程的水处理效果 |
| Depuration efficiency of recirculating aquaculture system in the aquaculture of Anguilla marmorata |
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| DOI： |
| 中文关键词: 循环水处理系统 微滤机 生物滤池 理化因子 |
| 英文关键词: recirculating aquaculture system microscreen biofilter physical and chemical factors |
| 基金项目:国家科技支撑计划项目（2012BAD25B00）；广东省科技计划项目（2009B020202002） |
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| 中文摘要: |
| 对花鳗鲡工厂化养殖系统的养殖池和各水处理设备进出的水质进行了连续检测，结果显示，在57d的养殖过程中，5#、6#、7#、8#养殖池水温为15~23.5℃，平均水温20.8℃曰pH6~7.6，平均值为6.8；溶解氧在6.101~9.026 mg/L之间波动，平均值为7.890 mg/L；4个养殖池水体氨氮含量为0.082~1.278 mg/L，均值为0.455 mg/L；亚硝酸盐含量为0.021~1.367 mg/L，均值为0.368 mg/L；化学需氧量（COD）含量为12.492~21.777 mg/L，均值为17.884 mg/L；水处理系统对氨氮的去除率在-1.57%~73.36%之间波动，均值为26.16%；对亚硝酸盐的去除率为-12.25%~37.89%，均值为2.22%；对COD的去除率为-3.82%~12.39%，均值为5.82%。水质指标中除COD和pH值外，均符合花鳗鲡的安全生产标准（NY/T5069-2002），花鳗鲡的存活率均在95%以上。结果发现，提高水温到25~30℃，调节pH值到7.5~9.5，同时调节挂膜菌种，改进挂膜方法，选择合适的饲料和投饵方式，建立与循环水系统相匹配的养殖技术，可提高系统的水质净化效率。 |
| 英文摘要: |
| We monitored the water quality of rearing tanks and the treatment equipment to study the system recycles efficiency for nutrient removal and to provide theoretical reference for a reasonable water quality regulation and standard producing instruction of operation for aquatic food. The result showed that the average seawater quality were 20.8℃for temperature, 6.8 for pH, 7.890 mg/L for dissolved oxygen, 0.455 mg/L for ammonium, 0.368 mg/L for nitrite, and 17.884 mg/L for COD. The average system removal efficiencies of ammonium, nitrite and COD were 26.16%, 2.22%, and 5.82%,respectively. Survival rates of Anguilla marmorata aquacultured were all higher than 95%. The results showed that increasing the water temperature to 25 -30益, adjusting pH 7.5 -9.5, choosing the right nitrifying bacteria, establishing proper
aquaculture techniques, the system could obtain a better removal efficiency for pollution. |
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