Processing method for wastewater from cephalosporin synthesis pharmaceutical production
A technology for producing wastewater and treating method
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[0014] Cephalosporin synthetic pharmaceutical production wastewater 300m 3 / d, incoming water COD 4000-7000mg / l, BOD 5 50-300mg / l, after balancing the water quality and volume in the regulating tank and adjusting the pH value, aerobic biological treatment is carried out in the contact oxidation tank to remove some organic substances with good biodegradability. The hydraulic retention time of the contact oxidation tank is 19 hours, and the volume load is 3.1kgCOD / m 3 .d, effluent COD2000-3000mg / l, BOD 5 20-230mg / l; the effluent from the contact oxidation tank enters the anoxic tank and the membrane bioreactor, the residence time of the wastewater in the membrane bioreactor is 20 hours, and the volume load is 4.5kgCOD / m 3 .d, the sludge concentration is 6-10g / l, the membrane flux is 10L / m 2 .h, membrane filtration resistance is less than 30kPa; effluent COD≤100mg / l, BOD5≤10mg / l, SS is lower than the detection limit, turbidity≤0.4NTU.
[0015] The ultrafiltration membrane i...
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