AlfaFlash ZLD
Reuse water and recover value from your waste with an AlfaFlash ZLD system. Featuring the AlfaFlash evaporator and an optional decanter centrifuge, ZLD systems efficiently remove solids from wastewater and other liquids. You can recover valuable dissolved and suspended materials in your process to re-use or sell. And if you have an industrial process that uses significant amounts of water, then you can recycle and reuse water that has been previously discharged, reducing disposal costs.
Modular or customized system for ZLD and process crystallization
- Wastewater elimination
- High purity distillate water that can be re-used, recovering up to 98% of water used in process
- Solids minimized, for re-purpose or minimal disposal costs
- High energy efficiency
- Compact yet robust installation, ideal for a wide range of applications
AlfaFlash ZLD systems eliminate liquid wastewater discharge, generate solids for disposal or reuse, and recycle high-purity distillate water that can be beneficially reused. AlfaFlash ZLD system help both the environment and your bottom-line and are easily adjusted to meet every-changing regulations. Alfa Laval’s proven track record and extensive experience in both thermal solutions and separation technology ensure a cost-efficient solution that incorporates maximum water reuse and high energy efficiency in industrial and food applications.
Modular systems in standard configuration or customized to your needs
Mechanical vapor recompression (MVR)
- Requiring electricity as utility
- Significantly less energy consumption compared with steam driven systems
- Available in 1,5-6 ton/hour evaporative capacity or to your specific capacity needs in a customized configuration
- Available as pre-assembled module
- Available in ZLD configuration equipped with crystal dewatering decanter centrifuge to produce a dry solids phase, and as stand-alone evaporator.
Multiple effect systems
- Available Multi-effect using steam, hot water or waste heat to drive the evaporation. Also available with thermal vapour recompression (TVR) enabling less steam consumption.
- Available as pre-assembled module
- Available in ZLD configuration equipped with crystal dewatering decanter centrifuge to produce a dry solids phase, and as stand-alone evaporator.
Documents
Heat sources for evaporation system
Configuration Options
Alfa Laval evaporation systems can use heat from different sources such as mechanical and thermal compression as well as waste vapours from dryers.
Mechanical vapour recompression, MVR
- Low (or no) steam consumption
- Uses electricity
Multiple-effect system
- Saves energy by reusing steam
- Simple and flexible
Thermal vapour recompression, TVR
- Low cost with reduced steam consumption
- Simple, no moving parts
Waste heat from your process
- Utilize low grade steam or waste heat
- Recover energy from exhaust gases
Working principle
Water is fed into the AlfaFlash heat exchanger. After heating fluid is then pushed through the flash orifice. The mixture is now essentially split in two phases – concentrate and vapour, which enters the cyclone separator where centrifugal forces boost vapour liquid separation. Vapour rises into space where mists and fine droplets are removed and the remaining concentrate flows into the recirculation pump. A side stream of concentrated liquid is then pushed through to the decanter where water is separated from solids.
Decanter centrifuge working principle
Alfa Laval decanter technology is used for dewatering suspended solids, resulting in minimum waste and maximum water recovery, with high removal efficiency for micro-particles as well. Watch the video to learn more!
AlfaFlash working principle
Dig deeper into the functions of the AlfaFlash ZLD system. Watch the AlfaFlash animation and experience our forced circulation evaporation technology first hand
Industries and applications
Many industries and companies can benefit from a ZLD solution. The below overview of water-intensive processes and applications can help you identify potential benefits of ZLD operation at your facility
AlfaFlash ZLD systems can be used across a range of demanding duties. Whether you need to reduce wastewater, recovery valuable product, or reuse water, this technology is tried, tested, and true in a wide range of industries:
- Mining, minerals and metals
- Battery production and recycling
- Power
- Petrochemicals
- Inorganic chemicals
- Semiconductors
- Chlor Alkali
- Oil & Gas
- Renewables
- Textiles
- Refineries
- Food & Beverage
- Pharmaceuticals
The system can also be applied in a large number of applications, including but not limited to:
- RO (Reverse Osmosis) reject treatment
- Spent caustic recovery
- Ion exchange regen waste
- Product recovery
- Salts recovery
- Scrubber brine
- Cooling tower blow down streams
- HVO pretreatment wastewater
- CIP processes
- Caustic concentration
Alfa Laval ZLD technology is designed to tackle even the toughest wastewater duties, often involving corrosive and/or fouling/scaling streams, including but not limited to:
- Mixed NaCl (sodium chlorides) dominant streams
- Sodium sulfate
- NaOH containing
- CIP chemicals
- Produced water
- Other metal sulfates
- Calcium chloride
Learn more about our ZLD systems
Whitepaper: How to save and reuse water with Zero Liquid Discharge
Learn how ZLD technology addresses the growing water challenges that industries are facing, including waste and pollution minimization, water scarcity, compliance with legislation and circularity.
Blog: Chronicles from the ZLD Space-Time Lab
Visit the blog of Alfa Laval experts driving ZLD innovations and exploring the use of water in industries
