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中国农学通报 ›› 2015, Vol. 31 ›› Issue (35): 43-48.doi: 10.11924/j.issn.1000-6850.casb15080051

• 水产 渔业 • 上一篇    下一篇

弧形筛对水体中固体颗粒物的去除效果研究

陈石,张成林,张宇雷,宋奔奔,单建军,陈翔,宋红桥,吴凡   

  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,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,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,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:2015-08-10 修回日期:2015-10-19 接受日期:2015-10-23 出版日期:2015-12-18 发布日期:2015-12-18
  • 通讯作者: 张成林
  • 基金资助:
    现代农业产业技术体系“鲆鲽体系”(cars-50);国家科技支撑计划课题“淡水鱼类工厂化养殖系统技术集成与示范”(2012BAD25B03)。

Solid Particle Removal Effect of Parabolic Screen Filter for Aquaculture Water

  • Received:2015-08-10 Revised:2015-10-19 Accepted:2015-10-23 Online:2015-12-18 Published:2015-12-18

摘要: 以弧形筛为研究对象,分析不同筛缝规格、安装角度以及水处理量条件下对固体颗粒物的去除效果,以获得最优化的结构设计参数。将固体颗粒物去除率作为试验指标,设计了0.10~0.25 mm的筛缝间隙、10~20 m3/h 的进水流量及53°和37°的筛网安装角度的多因素试验。结果显示,随着筛缝间隙的增大,固体颗粒物去除率呈逐渐下降趋势,但筛缝间隙与颗粒物粒径具有明显的“匹配性”特征,筛缝间隙应以等于或略小于水体中平均固体颗粒物粒径为宜;进水流量与固体颗粒物去除率呈反相关关系,单位面积筛面的水处理负荷宜控制在50 m3/(m2?h)左右;在合理的筛网安装角度范围内,适当增大安装倾角有利于提高固体颗粒物去除率。总之,将弧形筛装置应用在水产养殖系统中,是一种行之有效的方法。

关键词: 陇东塬区, 陇东塬区, 冬小麦, 生长量, 气候变化, 响应

Abstract: In order to optimize the design parameters of parabolic screen filter, a serial of experiments were developed under different conditions, such as screen size, inclination angle and water treatment. Removal rate of solid particles was considered as the evaluation indicator of the performance of parabolic screen filter. Screen size was set from 0.10 to 0.25 mm, inclination angle was set to be 37° and 53°, and influent water flow rate was set from 10 to 20 m3/h. Results showed that the particle removal rate had a certain correlation with screen size, it decreased with the increase of screen size. So the screen size was suggested to be equal to or less than mean diameter of solid particles. On the other hand, the removal rate had a negative correlation with influent water flow rate. The optimum hydraulic loading rate should be controlled lower than 50 m3/(m2?h). At last, larger inclination angle in appropriate range would be benefit for the enhancement of solid particle removal. In a word, parabolic screen filter is advisable and suitable for solid particle removal in aquaculture water treatment.