Advanced treatment method for coal chemical wastewater
A technology for advanced treatment of coal chemical wastewater, applied in natural water treatment, chemical instruments and methods, biological water/sewage treatment, etc. It can reduce the production of excess sludge, save operating costs, and save processing costs.
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[0009] Embodiment 1: The advanced treatment of coal chemical wastewater in this embodiment is realized according to the following steps: 1. Add biological filler and activated sludge to the reactor in turn; 2. Add to-be-treated coal chemical wastewater and methanol production wastewater, The mixed wastewater of coal chemical industry and methanol production to be treated is formed, and then KH is added to the mixed wastewater of coal chemical industry and methanol production to be treated according to the ratio of COD:P=100:1 2 PO 4 3. Pour air into the reactor until the dissolved oxygen concentration in the mixed wastewater of coal chemical industry and methanol production to be treated is 3-5 mg / L; 4. Carry out aeration treatment for 23 hours in the reactor, and then settle for 1 hour, that is, the coal is completed. Advanced treatment of chemical wastewater; wherein in step 1, the amount of biological filler added is 25% to 35% of the volume of the reactor, and the biologic...
Example Embodiment
[0013] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the amount of biological filler added in step 1 is 28% to 32% of the volume of the reactor. Other steps and parameters are the same as in the first embodiment.
Example Embodiment
[0014] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the amount of biological filler added in step 1 is 30% of the volume of the reactor. Other steps and parameters are the same as in the first embodiment.
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