Combined treatment process for high-concentration organic waste water
A technology of organic waste water and treatment process, applied in water/sewage multi-stage treatment, oxidized water/sewage treatment, biological water/sewage treatment, etc. Low and other problems, to achieve the effect of wide application, low sludge output, and reduced operating costs
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[0021] Example 1
[0022] The water quality characteristics of a certain high-sulfur fermentation industrial wastewater are shown in Table 1. The present invention inoculates microaerobic bacteria in a microaerobic reactor and conducts batch cultivation. When the MLSS reaches 8g / L, it is directly passed into the undiluted Fermentation wastewater starts continuous treatment, the dissolved oxygen content in the reactor is controlled between 0-0.5mg / L, the hydraulic retention time is 3d, the supernatant is oxidized by the ozone generator after the mixed liquid is precipitated in the sedimentation tank, and the contact time between ozone and wastewater is 60~120min, after ozone oxidation, the wastewater enters the activated sludge tank after passing through the intermediate tank. The temperature of the reaction zone is normal temperature, the hydraulic retention time is controlled for 10h, the dissolved oxygen concentration is greater than 2mg / L, the sludge concentration is 3g / L, and ...
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[0025] Example 2
[0026] The water quality characteristics of a certain food processing wastewater are shown in Table 2. First, microaerobic bacteria were inoculated in a microaerobic reactor and batch cultured. When the MLSS reached 4g / L, the undiluted fermentation wastewater was directly passed into it. Continuous treatment, control the dissolved oxygen content in the reactor to be between 0-0.5mg / L, the hydraulic retention time is 3d, the supernatant liquid enters the Fenton reagent oxidation reactor after the mixed liquid is precipitated in the sedimentation tank, according to H 2 O 2 / COD(W / W)=4.0, Fe 2+ / H 2 O 2 (W / W) = 0.08 to add Fe 2+ And H 2 O 2 After 130 minutes of reaction, it enters the intermediate tank, the effluent from the intermediate tank (pH 7.5) enters the activated sludge tank, the temperature of the reaction zone is normal temperature, the hydraulic retention time is 10h, the dissolved oxygen concentration is greater than 2mg / L, the sludge concentration is ...
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