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公开(公告)号:US5330651A
公开(公告)日:1994-07-19
申请号:US879915
申请日:1992-05-08
CPC分类号: C02F3/046 , C02F3/10 , C02F3/2806 , Y02W10/15 , Y10S210/903
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。