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Zero-emission medical wastewater treatment equipment and method

A treatment equipment and treatment method technology, applied in the direction of pathogenic microbial wastewater treatment, flotation water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of pollution, residual chlorine exceeding the standard, etc., to accelerate shedding as soon as possible, and solve pollution The effect of heavy mud load and promoting rapid reproduction and growth

Pending Publication Date: 2018-10-26
上海亚威环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a big problem left by chlorine disinfection is the excessive residual chlorine in water. This indicator has not been paid attention to before, so most of the design of medical wastewater equipment ignores this problem from the beginning, so it also produces wastewater while treating wastewater. a new source of pollution

Method used

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  • Zero-emission medical wastewater treatment equipment and method
  • Zero-emission medical wastewater treatment equipment and method

Examples

Experimental program
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Effect test

Embodiment 1

[0052] The amount of wastewater in a hospital: the total amount of domestic drainage is 100 tons / day, and the water consumption for flushing is 30 tons / day.

[0053] After testing, the influent COD (Biochemical Oxygen Demand) is 800mg / L and the SS (suspended matter) is 300mg / L. The effluent quality after treatment is required to meet the "Urban Sewage Recycling-Urban Miscellaneous Water Quality Standard" (GB / T18921-2002 ) Water quality standards.

[0054] The original treatment method of the hospital was only fermented in septic tanks, and directly discharged after simple chlorine disinfection. This method not only fails to effectively remove various pathogenic bacteria, viruses and other pollutants, but also produces excess chlorine, which will cause secondary pollution when discharged into the urban sewage pipe network.

[0055] Applying the technology of the present invention to its transformation, the process is as follows:

[0056] Septic tank → dissolved air flotation → sintere...

Embodiment 2

[0062] Wastewater volume of a hospital in the northern area: 210 tons / day.

[0063] The detected influent COD (Biochemical Oxygen Demand) is 720mg / L and SS (suspended matter) is 500mg / L. The original treatment process is: septic tank→hydrolytic acidification→biological contact oxidation→chlorine dioxide disinfection→discharge up to standard, and finally achieve the third-level discharge standard of "Integrated Wastewater Discharge Standard" (GB8978-1996) for domestic sewage of urban sewage treatment plant. Discharge.

[0064] With the aging of the equipment, the equipment runs slowly, and the problem of COD exceeding the standard gradually appears, and the implementation of the new environmental protection policy limits the problem of excess chlorine, and the process and equipment have to be improved.

[0065] Applying the technology of the present invention to its transformation, the process is as follows:

[0066] Septic tank→dissolved air flotation→new sintered glass filter materi...

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Abstract

The invention relates to environmental-friendly special wastewater treatment equipment and in particular relates to zero-emission medical wastewater treatment equipment and method. The treatment equipment comprises a strong pretreatment mechanism, a biochemical mechanism and an advanced treatment mechanism connected in sequence, wherein the biochemical mechanism comprises a first treatment area and a second treatment area communicated with each other; a plurality of elastic packing layers are arranged in the first treatment area from top to bottom; each elastic packing layer is composed of a plurality of elastic packing chains; each elastic packing chain is formed by connecting a plurality of pieces of elastic packing in sequence; at least one bend is arranged on the elastic packing chain;and impellers are arranged at the bottom and side faces of the first treatment area. Compared with the prior art, the environmental-friendly special wastewater treatment equipment disclosed by the invention has the advantages that the packing is wholly stacked and sways along an S-shaped curve, the packing is orderly slowly impelled in a circular curve in the process, problems of violent wire fracture, drop and the like are solved, the sludge can be uniformly stirred and dispersed, biogas can be effectively dispersed, and rapid reproduction growth of novel activated sludge is promoted.

Description

Technical field [0001] The present invention relates to environmental protection and special wastewater treatment equipment, in particular to a medical wastewater zero discharge treatment equipment and method. Background technique [0002] Medical wastewater is mainly composed of sewage discharged from inpatient departments, outpatient clinics, laboratories, canteens, bathrooms, laundry rooms, toilets, reagent rooms and other places. The source and composition of the sewage are very complicated. The sewage is a kind of low-concentration sewage, the water quality is similar to general domestic sewage, but it has the characteristics of space pollution, acute infection and latent infection. In addition to organic and inorganic pollutants, such as various drugs, disinfectants, and anatomical wastes, medical wastewater also contains a large number of pathogenic bacteria, viruses, and parasites. The composition is more complex. If medical sewage containing pathogenic microorganisms is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F2303/04C02F3/30C02F2103/003C02F1/24C02F1/001C02F1/28C02F1/50C02F1/78C02F1/72
Inventor 陈华山周伟杨云娇沈洁范鑫
Owner 上海亚威环保科技有限公司
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