The hospital wastewater treatment equipment currently on the market has many features, with the national environmental protection efforts to increase the strengthening of hospital sewage, medical wastewater discharge has become a mandatory check of sewage discharge standards. However, because of the specificity of medical wastewater, the treatment cost of this type of water quality is generally high. Small in line with the spirit of low investment, high efficiency, give priority to the use of the best use of technology for our national conditions, according to the current status of similar domestic sewage treatment technology, based on a comprehensive study of a variety of wastewater treatment technology, for the majority of users recommended the use of "septic tank + grille + regulator + anoxic pool + biological contact oxidation + MBR + chlorine dioxide disinfection "MBR requires almost no sludge discharge and can be operated permanently by return flow.
Specific process flow is: sewage collection into the septic tank, the effluent by the grating to remove the larger impurities and floating debris, and then by the regulating tank to adjust the water quality of water into the anoxic tank, to remove the macromolecules of organic matter, and at the same time to improve the biochemical properties of sewage. Denitrification in the anoxic pool, through the nitrification solution reflux, remove the total nitrogen in the sewage, and improve the removal rate of ammonia nitrogen. The effluent from the anoxic pool enters the contact oxidation pool, which is equipped with fillers to increase the contact area between the sewage and aerobic microorganisms, so that the organic matter and other organic matter in the sewage is greatly reduced. After oxygen treatment of sewage self-flow into the MBR pool, mbr membrane pool built-in sludge, through aeration to maintain sludge activity, further removal of organic matter, and filtration and clarification of the water quality. mbr membrane pool of water through the self-priming pump upgraded to the disinfection pool, chlorine dioxide generator disinfection into the clear water tank, clear water stored in the clear water tank to meet the standards of discharge. The water in the clear water pool can backwash the MBR membrane.