Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hospital wastewater treatment and resource recovery method

A technology for wastewater treatment and resource recovery, which is applied in the direction of pathogenic microbial wastewater treatment, biological water/sewage treatment, light water/sewage treatment, etc. Up to the standard, without considering issues such as effluent reuse and resource recovery

Active Publication Date: 2017-08-15
HENAN HENGAN ENVIRONMENTAL PROTECTION TECHCO LTD
View PDF9 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, in order to solve the defects of the prior art, the purpose of the present invention is to provide a method for hospital wastewater treatment and resource recovery, which can effectively solve the problem that the existing hospital wastewater treatment process generally does not meet the standard for denitrification and phosphorus removal, and there is no waste of residual sludge. Harmful stabilization treatment and failure to consider the issues of effluent reuse and resource recovery

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hospital wastewater treatment and resource recovery method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) The supernatant wastewater from the hospital septic tank passes through a 2mm fine grid to remove a large amount of fine particles and suspended solids to avoid subsequent pipeline blockage and normal operation of treatment equipment;

[0031] 2) The wastewater filtered by the 2mm fine grid enters the mixing tank for wastewater conditioning;

[0032] 3) The effluent from the mixing tank enters the anaerobic tank (A) of the A / O / A biological treatment system, and the anaerobic tank of the A / O / A biological treatment system receives the activated sludge with a reflux ratio of 50% from the MBR reactor. Phosphorus accumulating bacteria release phosphorus under anaerobic conditions and store internal carbon sources by degrading organic matter in wastewater;

[0033] 4) The effluent from the anaerobic tank enters the aerobic tank (O) of the A / O / A biological treatment system. The aerobic tank is filled with 50% of the pool volume of polypropylene ring packing, which can enrich nitri...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a hospital wastewater treatment and resource recovery method. The method can effectively solve the problems of standard non-reaching of general nitrogen and phosphorus removal, no harmless stable treatment of residual sludge and no consideration of outlet water reuse or resource recovery of existing hospital wastewater treatment technologies. The method is characterized in that water discharged from a mixed tank enters an A / O / A biological treatment system and undergoes nitrogen, phosphorus and organic matter removal, water discharged from the A / O / A biological treatment system enters an MBR reactor and undergoes enhanced nitrogen and phosphorus removal treatment, sludge in the MBR reactor returns to the A / O / A biological treatment system, water discharged from the MBR reactor enters an ultraviolet disinfection tank in order to kill pathogens in the water, water discharged from the ultraviolet disinfection tank enters a clear water tank and is temporarily stored, most of the obtained clear water can be used for lawn greening and toilet flushing, and the remaining water can be discharged after standard reaching. The method realizes the recovery of resources and energy in the hospital wastewater, realizes the harmlessness, recycling and reducing purposes of byproducts in the hospital wastewater treatment process, and is an innovation in wastewater treatment methods.

Description

Technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a hospital wastewater treatment and resource recovery method. Background technique [0002] Hospital wastewater is mainly composed of sewage discharged from inpatient departments, outpatient rooms, laboratories, canteens, bathrooms, toilets, pharmacy rooms, laundry rooms and other places. In addition to the large amount of organic matter, nitrogen, phosphorus and other components, the wastewater also contains a large number of harmful microorganisms such as germs, viruses and parasites. If the wastewater is discharged into the water body without effective treatment, it will seriously affect the surrounding environment and endanger people. Healthy. [0003] In order to ensure that hospital wastewater does not cause harm to people’s social life, the state has established strict discharge standards for hospital wastewater. However, due to inadequate supervision, most hospital...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C02F9/14C02F11/04C02F11/12
CPCC02F1/32C02F3/1268C02F3/301C02F9/00C02F11/04C02F11/12C02F2103/003C02F2303/04C02F2303/06Y02E50/30
Inventor 钮劲涛张平安金宝丹陈新强马三贵张萌
Owner HENAN HENGAN ENVIRONMENTAL PROTECTION TECHCO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com