Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Rainwater runoff treatment matrix and rainwater bioretention pond constructed by using matrix

A rainwater and substrate technology, applied in runoff/rainwater treatment, drainage structures, water/sewage treatment, etc., can solve the problems of limited electron supply capacity, inability to popularize and apply, increase hydraulic retention time and volume of sewage facilities, etc., and achieve high structure Strength and chemical stability, sustained and stable denitrification and phosphorus removal, and matrix stabilization effects

Active Publication Date: 2020-11-24
CHONGQING UNIV
View PDF18 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a water-insoluble mineral, pyrite has limited electron supply ability and can only maintain a low rate of denitrification, which increases the hydraulic retention time and volume of sewage facilities, and cannot be widely used in sewage treatment.

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
  • Rainwater runoff treatment matrix and rainwater bioretention pond constructed by using matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0026] The concept of the present invention is: compared with sewage, rainwater has completely different hydraulic and water quality conditions and physical and chemical properties. First, the concentration level of rainwater pollutants is lower, which can adapt to the characteristics of less electronic supply in the pyrite system; second, the rainwater treatment facilities are usually operated intermittently, and the dry period can provide sufficient hydraulic retention time, so as to meet the characteristics of pyrite system. The characteristics of long residence time required for denitrification; third, pyrite denitrification is mainly autotrophic denitrification, and its sludge yield is lower, which helps to maintain good hydraulic performance of bioretention, which is in line with low maintenance of bioretention facilities Fourth, pyrite is cheap and dur...

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
osmotic coefficientaaaaaaaaaa
osmotic coefficientaaaaaaaaaa
Login to View More

Abstract

The invention discloses a rainwater runoff treatment matrix and a rainwater bioretention pond constructed by using the matrix. A pyrite matrix layer on the lower layer of the rainwater runoff treatment matrix comprises pyrite, shell powder and a sandy material which are mixed according to the volume ratio of 10: 5: 85; and the upper biochar matrix layer comprises biochar or activated carbon, organic nutrient soil and a sandy material which are mixed according to a volume ratio of 20: 3: 77. A gravel drainage layer, a transition layer, a pyrite matrix layer, a biochar matrix layer, a sawdust protection layer and a water storage layer are sequentially arranged in a pond body of the rainwater bioretention pond from bottom to top; a perforated water collecting pipe is installed on the gravel drainage layer and connected with a lifting water outlet pipe, and the position height of the lifting water outlet pipe is equal to the top height of the pyrite matrix layer; and an overflow pipe is mounted at the top opening of the pond body. The matrix has the technical effects that the removal rate of common pollutants in the rainwater runoff is increased, the yield of byproducts can be reduced,and the matrix is durable.

Description

technical field [0001] The invention belongs to the technical field of rainwater treatment, and in particular relates to a mixed matrix of biochar and pyrite for treating rainwater runoff and a rainwater bioretention pond constructed with the matrix. Background technique [0002] With the acceleration of urbanization and the intensification of global climate change, the impermeable area of ​​urban surfaces has increased year by year, resulting in frequent occurrence of a series of problems such as urban waterlogging and non-point source pollution in recent years. Among them, a large amount of nitrogen, phosphorus and organic matter enter the receiving water body with urban runoff, causing a series of environmental problems such as black and odorous water body and eutrophication of water body. [0003] In order to solve the above problems, many countries have proposed new stormwater management concepts and systems, such as LID (Low Impact Development) in the United States, an...

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): C02F9/14C02F101/10C02F101/16C02F101/30
CPCC02F1/283C02F3/286C02F3/2806C02F1/58C02F2101/16C02F2101/105C02F2101/30C02F2305/06C02F2103/001C02F1/288C02F1/281Y02W10/10E03F1/00E03F5/14
Inventor 柴宏祥孔政邵知宇马菁晨
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products