The above or below-ground installed Eco-SAF Wastewater treatment system is based on proven biological Submerged Aerated Filter (SAF) technology and has been manufactured by us since 1996.
The Eco-SAF was originally designed as a secondary biological treatment for domestic sewage to an accepted standard where mains drainage (into the foul sewer) was unavailable. However, we have developed further a high treatment system for advanced ammonium removal, total N (nitrogen) removal, and to treat a wide variety of Industrial and Trade effluent COD levels. Additional equipment can be added to remove phosphorus.
To meet stringent environmental discharge consent standards, Eco-SAF systems are available to treat the equivalent of 50pe to 1000pe, which is scalable to accommodate a growing population of up to 10,000pe. In addition, primary/Balance and Humus settlement tanks (Integral or separate tanks depending on overall system size) are available as part of a complete three-stage packaged wastewater treatment system.
As part of our ongoing development of the Eco-SAF, it is now available in a modular design. Each cell is contained within a structural ‘exoskeleton’ frame, which, when connected in series, can provide a true modular large-scale SAF plant. Rapid deployment and requiring minimum site installation are available on a purchase-or-hire basis.
The Eco-SAF does not use chemicals in the treatment process and will safely discharge wastewater into the local environment where extra importance is required, typically nature reserves, fisheries etc. or for any sensitive locations.
The main function of a properly designed SAF is to provide a controlled environment and a concentration of nutrients (dissolved oxygen, mainly) sufficient to achieve optimum growth of the microbe population in the process. In addition, the rectangular design of the Eco-SAF ensures that the removal rate of organic contaminants is significantly improved compared to a circular (or Hopper) designed SAF. Why?
A nitrifying SAF where applications when the carbonaceous BOD has already been removed, however, full nitrification is required. In addition, further nitrate as nitrogen gas is removed by allowing denitrification bacteria to operate in anoxic conditions.
Enhanced biological uptake in combination with a standard aerated process encourages luxury uptake to establish a population of microorganisms with the ability to store phosphate beyond their normal metabolic requirements. For applications that require secondary carbonaceous, nitrifying and de-nitrifying treatment.