On-site water treatment and disposal in the removal & excavation of redundant fuel tanks

An oil / water separator allows for bulk water to be processed to a suitable standard so that it can be pumped direct to the foul sewer drainage. This eliminates the need for costly tankers to remove water from the site.

Developed to reduce the cost of water disposal, where tanks have already been water filled, David Plumb & Co utilise its Oil/Water Separator on-site to treat and dispose of contaminated water. The four-stage unit will separate petrol and solids from water at an approximate rate of 15,000 litres per hour.

Free phase fuel is initially removed by skimming the surface in the second chamber and can be collected in containers for later disposal.

Solids are trapped in the coalescing material within chambers 1 & 2. Petrol/oil is absorbed by chamber 3. Chamber 4 polishes the final effluent.

The resultant discharge, as indicated by the many chemists’ tests that have been carried out, shows it is acceptable to the Environment Agency and most local water authorities.

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