Treatment of contaminated agricultural run-off

Details Treatment of contaminated agricultural run-off Treatment of contaminated agricultural run-off

1992-05-08

1994-07-19

Upton, Christopher

Liquid purification or separation

Processes

Treatment by living organism

210747, 210170, 210903, C02F 328

Patent

active

053306511

ABSTRACT:
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.

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patent: 4919568 (1990-04-01), Hurley
patent: 4925552 (1990-05-01), Bateson et al.
patent: 5106504 (1992-04-01), Murray

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