SED ® The biochemical technology process system is a globally advanced, low-energy, low-cost, efficient, and stable new biochemical process solution provided by Huanchuan Environment Company.
SED ® Biochemical technology is an improved AAO process with low dissolved oxygen (DO), sludge screening and other technologies as its core. This process was jointly developed by a global team of doctoral experts in the field of wastewater treatment, integrating German OTT BioTas ® Micro mixing hose aeration technology, MACOSS ® Control technology, FluBca ® Biocarrier technology, InDENSE Austria ® Sludge screening technology, BioAir ® Multiple global core patented technologies for wastewater treatment, including air lift technology.
SED ® Biochemical technology is mature and widely used, and has been applied in municipal sewage, industrial parks, paper printing and dyeing, petrochemical, coal chemical and other sewage treatment projects in Europe, America, Asia and other regions. It has outstanding advantages in cost reduction, energy conservation and carbon reduction, upgrading and transformation, control, and significant effects, and has been recognized by a large number of users.
BioTAS ® The micro mixing hose aeration technology adopts German imported aeration hoses, which form small and slow rising bubbles under low air flow, greatly improving oxygen transfer efficiency. The weather resistance, oil resistance, acid and alkali resistance can maintain long-term stability and stability, and the comprehensive service life of municipal sewage is more than 10 years.
SNDPR synchronous nitrification denitrification occurs in the aerobic tank due to the low dissolved oxygen DO (0.5 ± 0.2mg/L), resulting in a difference in dissolved oxygen concentration within the sludge. Nitrification can occur in an aerobic environment on the sludge surface, while denitrification can occur in an anoxic environment inside the sludge. At the same time, free phosphorus is absorbed into polyphosphate accumulating bacteria.
MACOSS ® Control Technology MACOSS ® The control system is a complete set of integrated software and hardware control system. Based on the characteristics of the SED biochemical process, combined with changes in pollution load and process operation status, it automatically controls the blower and air regulating valve, adjusts and distributes the aeration amount as needed, stabilizes the dissolved oxygen in the aerobic zone, and ensures the efficient and stable operation of the sewage treatment process.
BioAir ® The essence of technology is air propulsion. Air lift is the use of an air lift pump to compress air and generate lifting power to lift liquid from a lower position to a higher position.
BioDens ® Densified activated sludge technology can achieve the screening and densification of activated sludge. Dense activated sludge is a sludge state that falls between ordinary activated sludge and granular sludge. In terms of morphology, the size of densified activated sludge is larger than that of ordinary sludge but smaller than that of granular sludge.
FluBca ® The biological carrier is composed of polyurethane foam connected from the surface of the carrier to the pores inside. The average pore size is 0.2~2.0mm after expansion in water, combined with BioTAS ® It can enhance the 1mm bubbles generated by the micro mixing hose, making the surface of the carrier an aerobic zone and the interior an anoxic zone, deeply simulating the internal anoxic and external aerobic state of sludge synchronous nitrification denitrification, and accelerating the rapid realization of synchronous nitrification denitrification by microorganisms.
BioHSS ® The rapid clarification technology adopts a rectangular edge inlet and outlet tank design, which is suitable for heavy sludge load systems, with faster settling speed, higher sludge water load, and lower effluent SS. Effectively combining with the aeration zone, anaerobic zone, and anaerobic zone to maximize the utilization of pool capacity.
SED biochemical technology has the advantages of integrated structure, land saving, low operating costs, low energy consumption, and low sludge production. Micro mixing hose aeration technology reduces energy consumption, enables self-cleaning and non-stop replacement, and is easy to maintain; Microbial screening technology changes sludge performance to improve treatment capacity and sedimentation rate; Sludge fermentation technology generates carbon sources, reduces the addition of additional carbon sources, and lowers the amount of sludge produced; Low dissolved oxygen synchronous nitrification denitrification technology reduces the need for external carbon sources and phosphorus removal reagents while lowering operating costs; Air lift technology achieves high reflux ratio; Quick clarification technology saves space.
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