Recycling of Black and Grey Water
Vacuum systems also lend themselves to the recycling of gray water. Once again the flexibility of the vacuum system allows you to bring all the grey water from the building back to one location, for forwarding to your treatment plant.
Evac can offer a wide range of sewage treatment plants from biological sewage treatment plants to membrane bioreactors for recycling gray water to be used as toilet flush and irrigation water or the safe disposal of black water. The plants have been designed to minimize technical problems and to maximize total process reliability.
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Advanced wastewater treatment
EVAC membrane bio-reactor (MBR) consists in merged intensive biological and ultra-filtration processes. The package wastewater treatment plant is composed of an equalizing anoxic tank, an aerated tank for biological process and a membrane submerged in the aerated tank (Figure 1). The effluent is produced by gravity flow or slight vacuum through the membrane so it does not require high energy consumption for effluent pumping.
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Activated sludge plant
Effective and reliable waste water treatment is achieved only by correct dimensioning of the technology. It is extremely important to know and be able to control waste water characteristics (concentration, flow, peak loads). Evac’s long experience with waste water characteristics and our ongoing research program give us a clear advantage in the field of waste water treatment.
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Grease separator
Grease, fat and oil can have deleterious effects on downstream wastewater treatment such as filter clogging and decrease in biological treatment efficiency. They cause also odor problem and non compliance towards discharge standards. Grease should be prevented from entering the sewage system by installing an efficient grease separator. Evac Grease Separator has been proven efficient and robust system in the marine sector.
