Our Technology

Industrial wastewater anaerobic digestion

Anaerobic digestion is a series of processes in which microorganisms break down biodegradable material in the absence of oxygen. It is widely used to treat wastewater sludges and organic waste because it provides volume and mass reduction of the input material.

Our treatment systems take into account all parameters in terms of suspended matter, BOD, COD, nitrogen, phosphorus and other pollutants flows in order to guarantee optimal wastewater treatment:

• Effluent from the brewing, dairy, slaughterhouse, bottling, canning, beverage and biofuel industries
• Oily water, sludge and organic waste
• Highly polluted industrial effluent
• Physical-chemical processes such as clarification, flotation, separation
• Biological processes such as anaerobic digestion, activated sludge, membrane bio-reactors
• Pilot schemes, consultancy, training, maintenance, operating the treatment plant

Water re-use solutions

Reuse of appropriately treated industrial wastewater can reduce manufacturing costs.

• Producing industrial water for multiple uses such as irrigation, wash water (trucks, floors), cleaning water conveyance water
• Cooling system feed
• Producing demineralised water for boilers

Industrial water re-use provides many benefits, including:

• Reduced water and wastewater costs
• Savings in terms of heating and water treatment costs
• Increased reliability of existing systems
• Environmental benefits associated with reduced water usage

• High independence from source water

Industrial sludge treatment and recovery

• Dewatering, drying
• Mesophilic and thermophilic digestion
• Sterilization, pasteurization
• Chemical and biological odor removal
• Incineration, co-incineration
• Anaerobic treatment and biogas recovery: CHP Heat Generation, "Green" electricity, Carbon credits

Further wastewater treatment technology

Aerobic Treatment

Aerobic treatment - Aerobic bacteria in the presence of oxygen. The aerobic treatment system produces a high quality secondary effluent. VWS UK offer the follow aerobic treatment processes:

• Activated Sludge - IFAS AnoxKaldnes
• Fixed Biofilm - MBBR AnoxKaldnes and SAF, Trickling filters
• MBR - Biosep
• Biofiltration - Biostyr

Thermal Treatment

Drying sludge is a process follows the dewatering stage or can be combined with it. It has various objectives. These include the following:

• Primarily the removal of interstitial water and to a lesser degree the combined water within the sludge.
• Increasing the calorific value of sludge (as a fuel) before incineration.
• Reducing volumes before storage or transportation.
• Sanitizing and improving sludge for agricultural reuse

VWS technology includes incineration, hydrothermal oxidation, thermal drying and sludge recycling.

Reverse Osmosis

Reverse osmosis water systems are frequently used in the Food & Beverage industry. The system is used to reduce the dissolved solids from feed water and also effective to remove dissolved impurities from water through its semi-permeable membrane.

Evaporators

Evaporation is a thermal treatment that can be applied directly to wastewater with little or no pre-treatment, and allows separation of the water from the waste because of the different volatility of the compounds contained within the water. Evaporation provides advantages over other water treatment techniques, such as full automation, very low chemical consumption and high tolerance of variability to concentrations of pollutants. Typically, it provides excellent separation of metals and ions; oils and surfactants; COD and BOD.