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Industrial water and waste treatment

Industrial wastewater varies considerably in specification, depending on type of industry and local habits. In many cases it is not accepted by the municipal wastewater treatment plant, so pre-treatment or complete on-site treatment is needed. Alfa Laval offers several compact, easy-to-operate wastewater treatment technologies that produce clean effluent either for discharge or further treatment for water reuse.

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On-site industrial wastewater treatment – also an untapped water resource

Alfa Laval technologies for biological treatment of industrial wastewater are ideal for removal of nutrients, organic matter, fats, oil and grease (FOG), and other undesirable substances and micro particles. They are characterized by high efficiency, flexibility and small footprint – with all steps in the same tank.

Where influent flow and organic loads vary and effluent requirements are stringent, the Alfa Laval AS-H Sequencing Batch Reactor (SBR) with our patented floating decanter is a good choice for secondary biological treatment. Combine it with the Alfa Laval AS-H Iso-Disc® Cloth Media Filter for tertiary treatment to get effluent of water reuse quality (5-10 µm) and <5 mg/l suspended solids and <10 mg/l BOD at a rate of 10-15 m3/h/m2.

Alternatively, install the all-in-one Alfa Laval Membrane bioreactor (MBR) system, that combines secondary and tertiary wastewater treatment and delivers a superior effluent quality (effective filtration in sludge to 0.2 µm) suitable for reuse. It removes suspended solids down to <1 mg/l, BOD down to <5 mg/l and handles 5-40 liter/h/m2 filtration area. The gravity driven, pump free and energy efficient design with compact membrane filtration modules (MFM) is based on our patented hollow sheet technology. Compared to other MBR solutions it offers improved safety, simplicity of operation, plus low operation and maintenance costs.

For some types of industrial wastewater e.g. petrochemicals, chemicals and pharmaceuticals evaporation of anaerobic effluent and crystalization of salty effluents using Alfa Laval AlfaVap and WideGap systems is a good solution. 

See what you can gain from on-site water and waste treatment - and calculate your savings!Turn waste into value with Alfa Laval solutions

Wastewater - an untapped water resource

More and more realise that wastewater can also be a valuable water resource. There are many good reasons to consider reusing biologically treated municipal and industrial wastewater: Increase water resources, reduce intake of new water and limit effluent flow loads to sewers.

Reclaimed water can be used for numerous applications e.g. industrial process water, cooling towers and wash water; surface irrigation of crops, vineyards and golf courses; recreation lakes, wetlands, wildlife habitat and stream augmentation and ground water recharge.

Water treated with Alfa Laval MBR and AS-H Iso-Disc filtration systems can even be used as potable water if a final polishing step e.g. UV radiation, ultrafiltration, nanofiltration, reverse osmosis, active coal, ozone or chlor is added.

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