WatMan technologies

1 Pumping / pressure boosting

WatMan manufactures tailorized water pumping and booster stations for each process step for energy optimal flow. The pump type and materials are selected according to the chemical properties of the pumped liquid for maximum lifespan, durability and energy efficiency.

  • Addittional buffer tanks can be applied for continuous process flows.
  • High quality European pump brands are preferred.
  • Flow or pressure based automatic pumping with intelligent dry run protections.

2 Coarse filtration

Coarse water filtration is used commonly in the initial stage of water treatment that removes large particles and debris from water. It is designed to protect downstream equipment and improve the efficiency of finer filtration or purification processes.

  • Purpose: To remove large contaminants such as leaves, sand, gravel, twigs, and other visible solids.
  • Filter Size: Typically uses screens or meshes with pore sizes ranging from 100 microns to several millimetres.
  • Common Materials: Stainless steel mesh, plastic screens, or fibre bag filters.

Common applications:

  • Municipal water treatment
  • Irrigation systems
  • Industrial processes
  • Aquaculture and ponds

3 Automatic self-cleaning filtration

An automatic self-cleaning filter is a type of water or liquid filtration system that cleans itself without interrupting the flow of the liquid. These filters are commonly used in industrial, agricultural, and municipal applications where continuous operation, minimal maintenance and space saving is essential.

  • Automatic operation (via timers or pressure sensors)
  • Continuous filtration (no downtime)
  • Low maintenance
  • Energy-efficient compared to manual cleaning

Common Applications:

  • Industrial process waters
  • Irrigation systems
  • Wastewater treatment
  • Food and beverage processing
  • Pulp and paper industry
  • Seawater pretreatment

4 Chemical dosing

Chemical dosing stations for diverse applications. To achieve optimal treatment results, sometimes chemical dosing is necessity for the process. WatMan manufactures tailorized tank and pump configurations for each specific usage. Dosing pumps and auxiliary equipment are chosen according used chemicals. Chemicals can be dosed according to flow, pH, turbidity or other online measurement. We emphasize on chemical safety when designing the equipment.

Common applications:

  • Coagulation and flocculation
  • pH adjustment
  • Antiscaling
  • Disinfection

5 Dissolved air flotation

Dissolved Air Flotation (DAF) is a water treatment process used to remove suspended solids, oils, and other contaminants from water by using air bubbles (Dispersion water) to float them to the surface. DAF is effective pretreatment process for membrane processes if raw water has high load of suspended solids, oils or organic impurities.

  • Effective for removing fine particles and oils
  • Produces high-quality effluent
  • Compact system footprint
  • Often used in industrial wastewater, food processing, and municipal water treatment

6 Multilayer filtration

Multilayer filtration (also known as multimedia filtration) is a pressure filtration water treatment method that uses multiple layers of media—typically with different sizes and densities—to remove suspended particles and turbidity from water more efficiently than single-media filters. Multilayer filtration is very effective particle filtration method with high solids load capacity down to 10 micrometre particle size. Different filtration media can be used such as sand, anthracite, special volcanic media depending on the case.

  • From top to bottom, the layers are arranged by increasing density and decreasing particle size, allowing for depth filtration:
  • Captures larger particles
  • Traps medium-sized particles
  • Removes fine particles and turbidity
  • Fully automatic filter backwash

Advantages:

  • High filtration flow rates
  • Longer operational cycles
  • Better use of filter depth
  • Common in municipal water treatment and industrial processes

7 Activated carbon filtration

Granulated activated carbon (GAC) filtration is a water treatment method that uses activated carbon to remove contaminants, odours, and tastes from water through a process called adsorption.

Common applications:

  • Chlorine and chloramine removal
  • Volatile organic compounds (VOCs) removal
  • Pesticides and herbicides removal
  • Removes bad tastes and odours
  • Removes some heavy metals (e.g., lead, mercury)

8 Softening / Ion exchange (IX)

A water softener is a device that removes hardness-causing minerals—primarily calcium (Ca²⁺) and magnesium (Mg²⁺)—from water. Hard water can cause scale buildup in pipes and appliances. Softening is used in wide range of applications usually to prevent scaling in following processes or piping.

WatMan softening solutions uses automatic resin regeneration.

  • Softening resins can be regenerated with NaCl
  • Effective continuous softening with parallel softening tanks.

9 Ultrafiltration

Water ultrafiltration (UF) is a membrane filtration process that removes suspended solids, bacteria, viruses, and some dissolved substances from water. It’s a physical separation process that uses semi-permeable membranes with very fine pores. WatMan desings tailorized ultrafiltration processes according to requirements including chemical cleaning systems and automation.

  • The water passes through hollow fibre or flat sheet membranes with pore sizes typically between 0.01 to 0.1 microns.
  • Clean water (permeate) passes through the membrane.
  • Larger particles, bacteria, and viruses are retained and flushed out as concentrate or reject.

What It Removes:

  • Bacteria (e.g., E. coli)
  • Viruses
  • Algae
  • Protozoa
  • Suspended solids
  • Some organic molecules

Common applications:

  • Drinking water purification
  • Wastewater treatment
  • Food and beverage processing
  • Pharmaceutical and biotech industries
  • Pretreatment for reverse osmosis systems

10 Cartridge filtration

Cartridge filtration is commonly used when water has relatively low amounts of impurities. Usually as a backup filtration before more solid sensitive processes like reverse osmosis. There are wide range of different type of cartridge filter housings and filters available in the market. Typical for cartridge filtration is that filters work in dead-end form so all the water which is treated is flown through the filter. Once filter cartridge gets clogged from impurities, it needs to be replaced for new or clean cartridge.

A cartridge filter is typically a cylindrical housing containing a replaceable filter element (the cartridge). Water flows through the cartridge, and particles are captured either:

  • On the surface (surface filtration) 
  • Within the depth of the filter media (depth filtration)
  • Typically for filtration rates 0,1 – 50 µm

11 Reverse osmosis

Reverse osmosis (RO) is a highly effective water purification process that removes dissolved salts, minerals, and other impurities by forcing water through a semi-permeable membrane.

What RO Removes:

  • Dissolved salts (e.g., sodium, calcium, chloride)
  • Heavy metals (e.g., lead, arsenic)
  • Fluoride
  • Nitrates
  • Microorganisms (bacteria, viruses)
  • Organic contaminants

Common application:

  • Drinking water systems
  • Desalination of seawater
  • Industrial water treatment
  • Food and beverage production
  • Pharmaceutical manufacturing

Seawater Reverse Osmosis (SWRO) is a specialized type of reverse osmosis designed to desalinate seawater—removing salt and other impurities to produce fresh, demineralized water. It’s widely used in coastal and marine regions where freshwater is scarce. Seawater can be treated to potable water or if required further to fully demineralized water for industrial use. WatMan uses own tailorized design with energy recovery devices for optimal solution for each individual project.

Advantages:

  • Provides a reliable source of freshwater from the ocean
  • Scalable for municipal, industrial, or shipboard use
  • Produces high-quality drinking or technical water
  • High energy efficiency with energy recovery devices

12 Electrodeionization

Electrodeionization (EDI) is an advanced water purification technology that combines ion exchange resins and electrical current to remove ionized and charged species from water—without the need for chemical regeneration. EDI is typically used after RO when reverse osmosis alone is not effective enough to achieve required purity of the water.

  • Chemical-free operation (no acid or caustic for regeneration)
  • Continuous process (no downtime for regeneration)
  • Produces ultrapure water (resistivity > 15 MΩ·cm)
  • Environmentally friendly and low maintenance

Common applications:

  • Pharmaceutical and biotech industries
  • Semiconductor manufacturing
  • Power plants (boiler feed water)
  • Laboratory ultrapure water systems

13 Mixed bed ion exchange

A mixed bed filter is a type of water purification system that uses a mixture of cation and anion exchange resins in a single vessel to remove dissolved ionic contaminants from water. It’s often used as a polishing step after reverse osmosis or deionization to produce ultrapure water.

  • Produces very high-purity water (resistivity up to 18.2 MΩ·cm)
  • Compact and efficient
  • Ideal for final polishing in ultrapure water systems

Common applications:

  • Semiconductor manufacturing
  • Laboratory and pharmaceutical water systems
  • Power plants (boiler feed water)
  • High-purity rinse water in optics and electronics

14 Remineralization

Remineralization is the process of dissolving essential minerals back into purified or desalinated water to make it healthier, more stable, and better tasting. This is especially important after processes like reverse osmosis (RO) or distillation, which remove not only contaminants but also beneficial minerals like calcium and magnesium.

15 Desinfection

Water disinfection is the process of eliminating or inactivating harmful microorganisms—such as bacteria, viruses, and protozoa—from water to make it safe for human consumption and use. It is a critical step in both drinking water treatment and wastewater treatment.

Chlorination:

  • Uses chlorine or chlorine compounds (e.g., sodium hypochlorite)
  • Provides residual protection in distribution systems
  • Effective against bacteria and viruses

Ultraviolet (UV) Disinfection:

  • Uses UV light to damage microbial DNA
  • Chemical-free and fast
  • No residual protection