OTT GROUP Aeration System, GermanyAeration System SolutionsSED® Bio-Multiplication Process
SED® Bio-Multiplication Process

SED is a revolutionary new technology of sewage treatment technology provided by Jiangsu Huanchuan Environmental Engineering Co., Ltd. to the global sewage treatment industry.

SED is a biochemical technology developed by the environmental research team of the University of Waterloo in Canada and Schutch in Germany, and supported by the technology platform provided by Huan Chuan Environment, which provides municipal sewage and industrial wastewater treatment plants and facilities around the world.

SED is a BioTAS micromixed hose aeration technology, BioFerm sludge fermentation to produce carbon source technology, BioAir air lift technology, BioDens microbial screening technology, BioHSS rapid clarification technology, anaerobic selective pool rich phosphorus bacteria (PAO) technology, Simultaneous nitrification, denitrification, nitrogen removal and biological phosphorus removal (SND and EBPR) technology and low dissolved oxygen aerobic pool 7 core patent technology combined into an integrated biochemical system process.

SED has been successfully applied and achieved remarkable results in dozens of sewage treatment projects in America, Europe and China, mainly covering municipal sewage, industrial parks, paper printing and dyeing, petrochemical, food and medicine and other sewage treatment fields. Dr. Imre Takacs, GLOBAL CEO of Dynamita Wastewater Simulation Company, and Dr. Dwight Houweling, Technical Director of North America, conducted quantitative simulation comparison analysis between SED and traditional biochemical technology. Compared with traditional biochemical technique, SED technique is proved to be advanced after simulation analysis, and a simulation analysis report is issued.

SED is very suitable for the upgrading and construction of municipal sewage and industrial wastewater treatment plants, and completely solves the problem of stable discharge of sewage treatment system up to standard.

Introduction to sed biochemical technology and biological process
  • BioTAS® Micromixed Hose Aeration Technology
    BioTAS® micromixed hose aeration technology uses a German aeration hose originally imported to form small and low ventilation rates Slow rising bubbles greatly improve oxygen transfer efficiency. Weather resistance and oil resistance...
  • BioAir® Air Lift Technology
    The essence of BioAir® technology is air lift. Air lift is the use of air lift pump to compress the air to produce lifting motion A force lifts a liquid from a lower place to a higher place.
  • BioFerm® Sludge Fermentation Technology
    BioFerm® technology is used to form sludge layers by sludge precipitation in an anaerobic tank, to generate VFA in the sludge layer by sludge fermentation, and then to release the resulting VFA into the liquid above the sludge layer by pulsed...
  • BioDens® Sludge Screening Technology
    BioDens® technology (Densified Activated Sludge) can select Densified activated sludge. Densified activated sludge is a sludge state between ordinary activated sludge and granular sludge. In terms of morphology, the size of densified activated sludge...
  • BioHSS® Rapid Clarification Technology (Rapid clarifier)
    BioHSS® technology (High-speed settler) enables rapid mud and water separation. High efficiency precipitator is adopted to realize the rapid settlement of sludge. Energy saving, easy to operate.
  • Anaerobic selection pond rich in phosphorous bacteria (PAO)
    Increasing anaerobic tank can accumulate phosphorus bacteria, which is beneficial to biological phosphorus removal and saves the addition of phosphorus removal reagent.
  • Simultaneous nitrogen and Phosphorus removal in aerobic tanks (SND and EBPR)
    The microorganisms primarily used for denitrification include heterotrophic bacteria (OHOs) and phospho-accumulating bacteria (DPAOs) that possess denitrification.
Biological Summary of Sed Biochemical Technology
SED has the advantages of one-piece structure, saving footprint, low operating cost, low energy consumption and low sludge production. Micro-mixed hose aeration technology reduces energy consumption, can realize self-cleaning and non-stop replacement, convenient maintenance; Microbial screening technology can change the performance of sludge and improve the treatment capacity and sedimentation rate. Sludge fermentation technology produces carbon source to reduce additional carbon source addition