Electro Frequency Pulse (EFP) for High Strength Wastewater Treatment


Environment, Clean Air & Water - Biological & Chemical Treatment


Conventional wastewater treatment solutions are often costly, unsustainable and involves a large carbon footprint. Furthermore, there are harmful chemical by-products and residues from the treatment process are not reusable. As such, there is a need for technologies that can cost effectively treat wastewater with reduced or minimal environmental impact.

This technology relates to a new wastewater treatment method using electro frequency pulse (EFP). The EFP produces free radicals that weaken and break down the chemical bonds of the contaminants in wastewater, converting them into harmless products in the process. This technology can handle refractory and recalcitrant contaminants that cannot be readily broken down by biological and chemical processes. Unlike incineration or biological/chemical treatment processes, this technology allows wastewater to be treated onsite instantaneously without any holding time. It is a robust, modular, and scalable and can handle a wide range of water treatment needs (up to 100 m3/h). For treatment scenarios requiring greater flow volume, it can be configured to handle multiple units of 100 m3/h to meet the requirement.

The technology owner is looking to either out-license this technology or for partners interested in joint venture/collaborations.


This technology offer is a robust, modular, and scalable wastewater treatment method using EFP. The features and specifications of the technology are as follows:

  • Production of EFP radicals to breakdown contaminants to water and harmless inert gases
  • Power consumption of SGD 0.05 – SGD 0.50 /m3 (COD dependent)
  • Factor of greater than 1000 times lower operational treatment cost compared to conventional treatment / incineration
  • Treatment of pollutants such as perfluoroalkyl substances (PFAS) & perfluorooctanesulfonic acid (PFOS) and high levels of COD (can comfortably handle COD of 2,000,000 mg/L) including recalcitrant COD
  • Ability to reduce TDS and ammonia
  • Unaffected by salt content in the wastewater


The uses of this technology are for industries who need wastewater treatment. The potential applications are:

  • To treat high strength (COD and BOD) wastewater produced in petrochemical industry, leather tanning industry, textile industry, oil and gas industry, pharmaceutical industry, etc.
  • To treat and eliminate spent caustic produced by petrochemical industry
  • To treat and eliminate BTEX (benzene, toluene, ethylbenzene, and xylene) contaminants
  • Recycling and reuse of treated water for cooling tower, boiler water or added back to processed water pool

Market Trends & Opportunities

The potential market size of the wastewater treatment industry is US$50 billion. Current alternative sustainable solutions being developed in the market have very stringent treatment requirements. One example of this is wet air oxidation (WAO) which requires very high pressure (>200 bar) and temperature (>370 oC) environment. This technology offer can operate at room temperature and pressure of less than 2 bars. It can provide a green, pollution-free, and low-cost solution to wastewater treatment.


  • Lowest operational cost compared to conventional treatment system
  • Green solution that does not produce any toxic by-product or residue
  • Minimal manpower required to operate the solution
  • On-site wastewater treatment (no transportation requirement)


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