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

Combination process for advanced treatment on urban storm runoff

A technology of advanced treatment and combined process, which is applied in the directions of water/sewage multi-stage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. and other problems, to achieve high removal efficiency and alleviate the effect of water shortage

Inactive Publication Date: 2010-04-21
BEIJING NORMAL UNIVERSITY
View PDF7 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use the adsorption and self-purification ability of soil to treat rainwater to obtain better water quality, and it can be arranged under the green space of the community, so the operation feasibility is good. However, the composition of urban rainwater is very complicated, except for SS, BOD and other conventional In addition to pollutants, it also contains toxic pollutants such as pathogenic bacteria and heavy metals. With the progress of rainwater treatment, these toxic pollutants will be enriched in large quantities in the soil, causing soil pollution, and even polluting groundwater, while heavy metal pollution of soil and groundwater It is more difficult to manage
[0006] It can be seen that it is difficult to meet the water standards for municipal greening and other water use only with simple filtration, and segmental treatment according to the characteristics of rainwater quality changes is not operable. Self-purification ability (filtration, adsorption and microbial action) is easy to cause toxic and harmful substances to pollute soil and groundwater when treating rainwater

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
  • Combination process for advanced treatment on urban storm runoff
  • Combination process for advanced treatment on urban storm runoff

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0028] The combined process of advanced treatment of urban rainstorm runoff according to the present invention can fully remove the pollutant characteristics of urban rainstorm runoff, and through processes such as filtration and adsorption, it can more thoroughly remove various pollutants brought in the process of rainwater washing, and finally reach drinking water standard, to maximize the recycling of rainwater resources.

[0029] Process flow of the present invention is as attached figure 1 As shown, the rainwater forms runoff and flows into the rainwater well of the residential area. The rainwater is pumped into the rainwater raw water tank 1 through the water pump, and then pressurized by the booster pump into the quartz sand filter 2. The quartz sand filter is a common fast filter device. When removing the suspended solids in the storm runoff, when the water containing suspended solid particles flows through the filter material layer, the gaps in the filter material pla...

Embodiment 1

[0033] During a certain rainfall in Beijing, the confluent rainwater was collected in the rainwater wells of the community, and the rainwater was processed through the combined process of advanced treatment of urban storm runoff. The process flow is: raw rainwater tank→quartz sand filter→activated carbon filter→PP filter element→ultrafiltration Membrane module → product water tank, the water output indicators of the process are shown in Table 1.

[0034] The typical index value before and after a certain rainfall rainwater runoff of table 1 is processed by the process of the present invention

[0035]

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 combination process for advanced treatment on urban storm runoff, which comprises rainwater treatment and backwashing sewage disposal, wherein the rainwater treatment comprises the following processes that: a pressurized water pump conveys rainwater collected in a rainwater raw water tank to a quartz sand filter, an activated carbon filter, a PP filter element and an ultrafiltration membrane component sequentially through pressurization, and the treated rainwater is stored in a water producing water tank; and the backwashing sewage disposal comprises the following processes that: when the quartz sand filter and the activated carbon filter are washed, a valve between the activated carbon filter and the PP filter element is closed, and the a sewage valve positioned at the top of the quartz sand filter and the activated carbon filter is opened; pressurized rainwater raw water passes through the quartz sand filter and the activated carbon filter sequentially at a high speed, and impurities absorbed on the surface of a filter material are washed by utilizing the impulsive force of high-pressure stream; and when an ultrafiltration membrane is subjected to backwashing, a solenoid valve I and a solenoid valve II are opened, a solenoid valve III is closed, a transfer pump conveys the water in the water producing water tank to the ultrafiltration membrane component, the water is pressed into an inner membrane of the ultrafiltration membrane from an outer membrane of the ultrafiltration membrane, and the water is discharged from a backwashing sewage disposal pipeline.

Description

technical field [0001] The invention relates to a combined process for advanced treatment of urban rainstorm runoff, in particular to a combined process for advanced treatment of urban rainstorm runoff and recycling of fresh water resources. It belongs to the field of environmental engineering and wastewater treatment engineering. Background technique [0002] With the economic development of our country, environmental problems are becoming more and more prominent, especially the lack of urban water resources and the pollution of water environment are becoming more and more serious. With the acceleration of urbanization, a series of water environment problems have arisen. On the one hand, the process of urbanization has increased the number of impermeable surfaces, and the flood disasters caused by urban storm runoff cannot be ignored. On the other hand, since most of the urban surface is impermeable, rainfall, especially heavy rain, quickly forms runoff after it hits the ...

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): C02F9/02C02F1/28C02F1/44
Inventor 欧阳威宋凯宇郝芳华王玮张璇
Owner BEIJING NORMAL UNIVERSITY
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