Water purification - uses micro biological degradation to decompose hydrocarbon(s) and surfactants present

摘要

To decompose hydrocarbons and surfactants present in water, the water is emulsified in a mechanical emulsifier and then passed to at least two decomposition stages. Each these stages has a reactor with aerobically degrading microorganism. The mixture is separated and then, by flotation, gives a sedimentation with a low water content and a liq. The two phases, with a low water content, are returned separately or together ot the reactor. The separated liquid is passed through at least one further degrading stage with anaerobic decomposing micro organisms, before passing into further decomposition stages or the water pipeline. USE/ADVANTAGE - For cleaning water which has been soiled, e.g. in firefighting practice where fuel burning on a water surface has been extinguished with foams to give a toxic combination which can pass into public water supplies, or for cleaning water used in vehicle washing assemblies, or waste water which has penetrated used oils and cleaners. The system purifies soiled water to give a clear water free of residue, through micro biological degradiation.