Treatment of contaminated agricultural run-off
    1.
    发明授权
    Treatment of contaminated agricultural run-off 失效
    污染农业径流处理

    公开(公告)号:US5330651A

    公开(公告)日:1994-07-19

    申请号:US879915

    申请日:1992-05-08

    IPC分类号: C02F3/04 C02F3/10 C02F3/28

    摘要: Nitrate-polluted run-off water from a field is conveyed via land drains to a reservoir. The reservoir is large enough to contain excess quantities of storm water from the field. From the reservoir, the run-off water enters a tank which contains wood or other organic carbon material. The wood is kept under water, i.e. under anaerobic conditions, whereby the nitrate is broken down by bio-chemical action. Sufficient wood is provided, and the flow rate is so adjusted, that the nitrate-polluted water spends many hours in contact with the wood.

    摘要翻译: 来自田地的硝酸盐污染的径流水通过陆地排水沟输送到水库。 水库足够大,可以容纳来自野外的大量暴雨水。 从储存器中,流出的水进入含有木材或其他有机碳材料的罐。 木材保持在水下,即在厌氧条件下,由此通过生物化学作用破坏硝酸盐。 提供足够的木材,并且调节流速,使硝酸盐污染的水与木材接触许多小时。