Adjustable biological treatment system and method for wastewater
A biological treatment, adjustable technology, applied in water/sludge/sewage treatment, water pollutants, chemical instruments and methods, etc., can solve problems such as small adjustable range
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Embodiment 1
[0039] The industrial park accepts sewage, and the incoming water is mainly non-toxic industrial wastewater and some domestic sewage. The industrial wastewater is 1500m 3 / d, domestic sewage 900m 3 / d, the designed influent water quality is pH6~9, BOD 5 :300mg / L,COD Cr : 500mg / L, SS: 400mg / L, the discharge standard is GB18918-2002 Grade A standard, considering the design margin, the design treatment water volume is 3000m 3 / d adjustable residence time biological treatment device, when the water level is full, the hydraulic retention time of the hydrolysis tank is 6h, the residence time of the anoxic tank is 6h, the residence time of the aerobic tank is 24h, the hydraulic retention time ratio, the hydrolysis tank: the anoxic tank : Aerobic tank = 1:1:4, the hydrolysis tank is set with 3 compartments, the flow of the 3 compartments is up and down baffle, 47% of its volume is suspended with combined packing, the spacing of the combined packing is 200mmX200mm, the anoxic pool is...
Embodiment 2
[0041] The adjustable wastewater biological treatment process and method are used for experimental research on the treatment of various industrial wastewater. When the water level is full, the water intake is adjusted to 1m 3 / h, the hydraulic retention time of the hydrolysis pool, anoxic pool, and aerobic pool are 6h, 6h, and 18h, respectively, and are used to treat poplar APMP chemical pulp wastewater. After sedimentation, the wastewater index is: COD cr :6700mg / L, BOD 5 : 2400mg / L, pH: 7.93, NH 4 +-N: 18mg / L, TN: 32mg / L, because the N content in the waste water is not high, therefore, the backflow of the mixed liquid and the sludge backflow are canceled, the anoxic pool is equivalent to the hydrolysis pool, and the water inflow is reduced to 0.75m 3 / h, at this time, the hydraulic retention time of the hydrolysis pool, anoxic pool, and aerobic pool are respectively 16h, 0h, and 24h, which strengthens the hydrolysis and aerobic effects, and the effluent COD after treatment...
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