Biological wastewater treatment
Many municipal wastewater treatment works face challenges e.g. related to meeting new stricter discharge criteria and insufficient capacity but limited space for expansion. Others are looking into water reclamation for the benefit of the local community. Alfa Laval offers several innovative, flexible and highly efficient biological wastewater treatment technologies as alternatives to more traditional methods.
Biological wastewater treatment process with Alfa Laval
- High efficiency
- Flexibility
- Small footprint
- Have all steps in the same tank
Alfa Laval technologies for biological wastewater treatment are ideal for removal of nutrients, organic matter, fats, oil and grease (FOG), and other undesirable micro particles and substances.
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 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
Services
Your trusted service partner for wastewater treatment solutions
Our dedicated Global Service Network supports you with parts and expertise, wherever you are, whenever you need it. By ensuring greater uptime, availability and optimization, we help bring you peace of mind, and maximize your return on investment. We can work with you to integrate our services into an Alfa Laval Service Agreement for predictable and worry-free operations.
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Wastewater - an untapped water resource
More and more people realize that wastewater can also be a valuable resource. There are many good reasons to consider reusing biologically treated municipal and industrial wastewater: Reuse water resources, reduce freshwater intake, and reduce effluent treatment costs.
Reclaimed water can be used for numerous applications, e.g., industrial process water, cooling towers, wash water, surface irrigation of crops, vineyards, and golf courses; recreation lakes, wetlands, wildlife habitat, and groundwater recharge.
Water treated with Alfa Laval MBR or an AS-H Iso-Disc filtration system is an excellent technology for indirect portable reuse (IPR) or direct potable reuse (DPR) when a final polishing technology such as UV disinfection, ultrafiltration, nanofiltration, reverse osmosis, activated carbon, ozonatione, or chlorination
Solutions for the Circular Economy
More and more wastewater treatment plants are discovering the benefits of a circular, holistic approach to wastewater treatment. Cost savings, reduced environmental impact and new income streams from recovered resources are but a few. Every wastewater treatment plant is unique and has its own set of challenges and opportunities. With our expertise in processing and our broad range of products, we can support your shift to a circular resource flow. Regardless of whether you are a contractor, designer or plant operator we can help you find the optimum solution for your specific project.
