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

Anaerobic natural ventilation integrated composite vertical-flow biological water treatment filtering tank

A natural ventilation, vertical flow technology, applied in the field of anaerobic natural ventilation integrated composite vertical flow biological water treatment filter field, to achieve the effects of good effluent quality, reduced investment cost and low sludge yield

Inactive Publication Date: 2014-11-19
WUHAN UNIV
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, composite vertical flow is widely used in constructed wetland systems, but has not been applied in biofilters. Although Tongji University has developed an anaerobic natural ventilation integrated biofilter process, the water treatment process of this filter is the first Anaerobic membrane biological treatment, and then natural ventilation aerobic biological treatment, anaerobic process and natural ventilation process are relatively independent, not integrated

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
  • Anaerobic natural ventilation integrated composite vertical-flow biological water treatment filtering tank
  • Anaerobic natural ventilation integrated composite vertical-flow biological water treatment filtering tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The quality of influent water entering the downstream filter is: ammonia nitrogen 4.45mg / L, nitrate nitrogen 6.10 mg / L, COD Mn 12.5mg / L O 2 . The flow rate of the anaerobic natural ventilation integrated composite vertical flow biofilter is controlled to 42mL / min, and the hydraulic retention time is 9.9h. After 30min, the overflow effluent of the upstream filter is taken for analysis, and the result is that the ammonia nitrogen content is 2.54mg / L, and the nitrate nitrogen 4.78mg / L, COD Mn 3.21 mg / L O 2 , the removal rates of ammonia nitrogen, nitrate nitrogen and COD were 42.9%, 21.6% and 74.3%, respectively. It can be seen that the filter can effectively remove COD in the water body, has a good removal effect on ammonia nitrogen, and has a certain removal effect on nitrate nitrogen.

Embodiment 2

[0036] The quality of influent water entering the downstream filter is: ammonia nitrogen 4.36 mg / L, nitrate nitrogen 5.46 mg / L, COD Mn 15.1mg / L O 2 . The flow rate of the anaerobic natural ventilation integrated composite vertical flow biofilter is controlled to 29mL / min, and the hydraulic retention time is 14h. After 3h, the overflow effluent of the upstream filter is taken for analysis, and the results show that the content of ammonia nitrogen is 3.06mg / L, and the content of nitrate nitrogen is 4.37. mg / L, COD Mn 2.59 mg / L O 2 , the removal rates of ammonia nitrogen, nitrate nitrogen and COD were 29.8%, 20.0% and 82.8%, respectively. It can be seen that the filter can effectively remove COD in the water body, has a good removal effect on ammonia nitrogen, and has a certain removal effect on nitrate nitrogen.

Embodiment 3

[0038] The quality of influent water entering the downstream filter is: total nitrogen 29.2mg / L, ammonia nitrogen 2.23mg / L, nitrate nitrogen 2.11mg / L, COD Mn 16.5mg / LO 2. The flow rate of the anaerobic natural ventilation integrated composite vertical flow biofilter is controlled to 29mL / min, and the hydraulic retention time is 14h. After 1.5h, the overflow effluent of the upward flow filter is taken for analysis. The result is that the total nitrogen is 19.8mg / L, the ammonia nitrogen content 1.54mg / L, Nitrate 1.65mg / L, COD Mn 4.62mg / LO 2 , the removal rates of total nitrogen, ammonia nitrogen, nitrate nitrogen and COD were 32.2%, 30.9%, 21.8% and 72.0%, respectively. It can be seen that the filter can effectively remove COD in the water body, and has a good removal effect on total nitrogen and ammonia nitrogen, and has a certain removal effect on nitrate nitrogen.

[0039] It can be seen that the filter can effectively remove COD in the water body, has a good removal effe...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses an anaerobic natural ventilation integrated composite vertical-flow biological water treatment filtering tank. The whole filtering tank consists of a downstream-flow filtering tank and an upstream-flow filtering tank. By means of a composite vertical-flow technology, sewage firstly passes through the downstream-flow filtering tank for enabling a part of ammonia nitrogen, nitrate nitrogen, total nitrogen and COD to be removed through a nitrification process and a denitrification process; and then passes through the upstream-flow filtering tank for enabling a part of ammonia nitrogen, nitrate nitrogen, total nitrogen and COD to be removed through the nitrification process and the denitrification process. Liquid levels in the two filtering tanks are ensured in an overflow discharging method. A horizontal height of an overflow hole in the upstream-flow filtering tank is lower than that of a water inlet hole of the downstream-flow filtering tank. A natural ventilation process is employed in upper parts of both the downstream-flow filtering tank and the upstream-flow filtering tank and an anaerobic water treatment technology is employed in lower parts of both the downstream-flow filtering tank and the upstream-flow filtering tank so that the anaerobic method and the natural ventilation is actually integrated. The invention relates to a non-point source sewage treatment technology and can be used in urban sewage treatment and industrial wastewater treatment in which water body properties are similar to urban sewage.

Description

[0001] Technical field [0002] The present invention involves an anaerobic natural ventilation integrated composite vertical flow biological water treatment filter. Specifically, it is a water flow method that integrates anaerobic and nitrification and natural ventilation.Combined biological water treatment filter. [0003] Background technique [0004] With the improvement of people's living standards, the governance of non -point source pollution is increasingly paid attention to in the area surrounding cities, such as the surrounding area of the tube.The nitrogen content is high, the content of ammonia nitrogen, nitrate, and phosphorus is relatively low, and the water quality is poor.In order to restore the reuse function of this part of the water, it is urgent to develop a kind of non -mighty and unreasonable biological filter to intercept the COD and nitrogen in the runoffs caused by the discharge of residents and some rainfall.At present, composite vertical streams have ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 薛金凤
Owner WUHAN UNIV
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