Hospital wastewater treatment method
The invention provides a hospital wastewater treatment method. The hospital wastewater treatment method comprises the following steps: step 1), carrying out primary filtering on wastewater through a grid to obtain wastewater A; step 2), introducing the wastewater A into a regulating tank and regulat...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a hospital wastewater treatment method. The hospital wastewater treatment method comprises the following steps: step 1), carrying out primary filtering on wastewater through a grid to obtain wastewater A; step 2), introducing the wastewater A into a regulating tank and regulating the pH (Potential of Hydrogen) to 7 to 9, so as to obtain wastewater B; step 3), introducing thewastewater B into a membrane bioreactor and treating to obtain wastewater C; enabling the wastewater C to remain in the membrane bioreactor for 5h, wherein the pore diameter of a membrane is 0.2mu m;step 4), introducing the wastewater C into a sedimentation tank and precipitating; step 5), introducing water discharged from the sedimentation tank into a disinfection tank; disinfecting and discharging the water, wherein the initial adding amount of active sludge in the membrane bioreactor is 0.8 percent to 1 percent of the volume of a water body in the membrane bioreactor; after running for 48h, increasing the sludge a |
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