"Over the last 30 years WPM has earned itself a remarkable reputation for Service and Product Innovation"

WPM is the Sentratek Group's Water Process Management division and is based in Port Elizabeth, Eastern Cape, South Africa and provides a wide-range of services within the water industry. Our primary focus is on medium to large rated Water Plant Design, Sales and Installation with the assistance of our preferred International Technology and OEM Manufacturing Partners.

As a Africa Services division for our Group we also maintain and service new and existing Treatment Plant Systems, with approved and certified Water Treatment Chemicals, Filtration media products and Original replacement parts, such as membranes and associated mechanical components required for water plants to perform optimaly and cost effectively.

Sentratek - WPM with its Technology Partners have water treatment sales and service offices in Cape Town, Durban, George, East London, Johannesburg, and Bloemfontein, with our Africa offices being located in Namibia, Kenya, Zambia and Mozambique.

Service and Supply Capability

OEM Water Equipment | Modular Water Systems | Chemical and Consumables | Control Systems | Plant Upgrade Services | Site and Remote Water Management | Water Plant Upgrade and Maintenance Services

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Perfectly-suited to rural communities, holiday resorts, mining facilities, factories, and smaller municipal projects, small-scale municipal wastewater treatment solutions from VWS South Africa offer the African market reliable and low maintenance designs, durability and energy efficiency.

Package plants, containerized systems, and mobile modular units for municipal wastewater treatment and re-use depend on trickling filter technology:

Trickling filter systems screen and remove non-degradable particles from raw sewage. An advanced anaerobic digestion process further prepares effluent for a fixed-film trickling filter, where organic constituents are removed and nitrification and final water polishing occurs. Final solid separation, chlorination and disinfection leave water ready for use in various processes.

These systems feature:

  • Easy operation
  • Low-maintenance designs
  • Fast recovery after power outages
  • Low sludge production
  • Designs accommodate peak flow periods

Modular designs are easily upgradeable to meet growing capacity loads, and location-specific demands can be accommodated in every design. Trickling filter technology is employed in both small-scale package plants and full-scale wastewater treatment plants to treat domestic sewage that's high in organic matter, BOD, COD and other pollutants. We represent market leaders in trickling filter technology which offers highly-efficient solutions that benefit both the environment and communities.

Trickling filter technology is used to:

  • Upgrade sewage for re-use in irrigation, dust suppression and other tasks
  • Upgrade sewage to near potable standards so it can be made suitable for human consumption
  • Ensure discharge water is compliant with environmental standards

Modular trickling filter technology

Modular wastewater treatment systems using trickling filter technology afford non-urban communities the technology to comply with stringent environmental, health, and legal specifications. Just a single package plant can treat domestic sewage for up to 500 residents - making trickling filter ideal for mine camps, special projects and small settlements.
In modular trickling filter plants, an anaerobic reactor, powered by cultivated micro-organisms, works in conjunction with an anoxic reactor - which is followed by a second aerobic reactor process which breaks down organic matter into more easily-removed substances. These remaining solids are settled and removed using water clarification or filtration.
Chlorine and ultraviolet treatment are sometimes used to further disinfect water for human consumption.

In addition to being more affordable and robust, trickling filter has numerous benefits:

  • Less sludge is produced
  • Operation requires lower energy input
  • Systems feature minimal routine maintenance
  • Simpler technology is employed
  • Minimal operator intervention is necessary for continuous operation
  • Systems recover faster after power outages 

Upgrading modular wastewater treatment systems to handle larger capacities is also simpler, and location-specific requirements are easily incorporated into package plant designs that use trickling filter technology.

Trickling filter for large-scale wastewater treatment
New wastewater treatment plants can benefit from trickling filter's highly robust digestion processes. We with our technology partners offer TF feasibility, design, construction, commissioning and operation, and work closely with clients, governments and environmentalists to provide the best possible trickling filter solutions.

  • Trickling filter technology recovers easily from power outages
  • High-rate bio digestion takes place with minimal energy and other resources
  • Trickling filter systems are easy to operate
  • Toxic loads have minimal effect on digestion processes
  • Low lifespan costs

Upgrading sewage works with trickling filter
Because of its simplicity, older large-scale wastewater treatment plants can easily be upgraded to support trickling filter technology, while utilizing existing infrastructure. It has become recognized as a cost-effective way to buy more treatment capacity, as well as higher discharge standards.

  • Utilize existing tower structures
  • Simply introduce plastic carrier elements, aeration/circulation systems
  • Only minor other upgrades necessary
  • Short upgrade periods

Plants comply with the South African (National Water Act 36-1998) Regulations and WHO standards for effluent discharge.

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