Floatation/filtration-integrated polluted water advanced treatment device and method

A technology for advanced treatment and polluted water, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. The complex water treatment process and other problems can achieve the effect of expanding the adaptability of source water, saving initial investment and operating costs, and saving land area.

Inactive Publication Date: 2013-04-03
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process can only effectively remove suspended solids, colloidal substances, bacteria and E. coli in water, but has poor removal ability for algae and organic pollutants, especially dissolved organic pollutants.
In order to meet the water quality requirements of the water plant, when the water quality of the water source is deteriorating, the water plant usually adopts pretreatment before the water purification process, or increases intensive treatment, advanced treatment and other processes, and adds more chemicals. The process becomes very complicated, and the cost of water production also increases accordingly
It is worth mentioning that as more and more disinfectants and water purifiers are widely used, the types and concentrations of secondary pollutants in water, especially the mutagenic activity after chlorination of effluent water continue to increase, and the safety of water quality is greatly improved. decline, causing harm to human health
In the case of polluted water sources, the conventional treatment process has been unable to do what it wants
[0003] Therefore, when the water source is polluted, due to the limitations of the conventional purification process, it is difficult to guarantee the safety of the treated drinking water quality
Therefore, the conventional water treatment process can no longer adapt to the existing water source and water quality standards, and new water treatment technology and corresponding system equipment must be developed

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
  • Floatation/filtration-integrated polluted water advanced treatment device and method
  • Floatation/filtration-integrated polluted water advanced treatment device and method
  • Floatation/filtration-integrated polluted water advanced treatment device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1 An advanced treatment device for polluted water integrated with floatation and filtration, see figure 1, including a flotation tank and a dissolved air tank, the flotation tank includes an air flotation unit and a filter unit that are combined in a structure from top to bottom, and a contact reaction with an upward opening is arranged in the air flotation unit chamber, the bottom of which is connected to the source of raw water and the dissolved air tank 13 successively via corresponding pipelines, above the contact reaction chamber is the separation zone 5 of the air flotation unit; From top to bottom, it includes activated carbon filter layer 7, quartz sand filter layer 8, and gravel support layer 9; the bottom of the filter unit is respectively connected to the corresponding water backwashing pipeline and gas backwashing pipeline. A slag overflow area 6 is set above the separation area 5 . The thickness of the activated carbon filter layer 7 is 700 mm, wh...

Embodiment 2

[0051] Example 2 Process test of advanced treatment of polluted water integrated with floatation and filtration

[0052] (1) Optimum dosage of coagulant (polyaluminum ferric chloride)

[0053] The water volume of the test raw water is lm 3 / h, turbidity 0.8 ~ 1.5NTU, water temperature 8 ~ 10 ℃, using the floating filter integrated polluted water advanced treatment device described in Example 1, the reflux ratio of dissolved air in the floating filter is 20% ~ 30%, dissolved air The tank pressure is 0.30MPa, and the coagulant used is polyaluminum ferric chloride PAFC (polyaluminum ferric chloride solution, density 1.2kg / L, AL 2 o 3 content is 10.5%); polyaluminum ferric chloride PAFC dosage is 0mg / L, 1mg / L, 2mg / L and 4mg / L respectively, see figure 2 , image 3 .

[0054] Depend on figure 2 , image 3 The changes in the data show that: ① After adding PAFC, the removal rate of various indicators, especially the turbidity, has been significantly improved, especially with ...

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
heightaaaaaaaaaa
clearance rateaaaaaaaaaa
Login to view more

Abstract

The invention relates to a floatation / filtration-integrated polluted water advanced treatment device and method. The device comprises a floatation / filtration tank and a dissolved air cylinder, wherein the floatation / filtration tank comprises a floatation unit and a filtration unit which are arranged up and down; a contact reaction chamber is arranged in the floatation unit, the bottom is sequentially communicated with a raw water source and the dissolved air cylinder through a pipeline, and a separation region of the floatation unit is arranged above the contact reaction chamber; the filtration unit has the same cross section as the separation region of the floatation unit; the filtration unit sequentially comprises an activated carbon filtering layer, a quartz sand filtering layer and a gravel supporting layer from top to bottom; and the bottom of the filtration unit is respectively communicated with a water back flush pipeline and an air back flush pipeline. The invention integrates floatation and filtration, highly integrates multiple pollution removal mechanisms, and can simultaneously remove algae and organic substances; the preoxidation-reinforced floatation / filtration tank technique widens the adaptability to raw water, and enhances the pollutant elimination capacity; and the removal rate of algae, algal poison and smelly substances exceeds 90%, and the removal rate of permanganate index exceeds 50%, so that the water quality is comprehensively improved.

Description

technical field [0001] The invention relates to the technical field of water purification, in particular to a device and method for advanced treatment of polluted water integrated with floatation and filtration. Background technique [0002] At present, most domestic water plants generally adopt conventional treatment processes, namely coagulation-sedimentation-filtration-disinfection processes. This process can only effectively remove suspended solids, colloidal substances, bacteria and E. coli in water, but has poor removal ability for algae and organic pollutants, especially dissolved organic pollutants. In order to meet the water quality requirements of the water plant, when the water quality of the water source is deteriorating, the water plant usually adopts pretreatment before the water purification process, or adds intensive treatment, advanced treatment and other processes, and adds more chemicals. The process becomes very complicated, and the cost of water product...

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): C02F9/14
Inventor 周振民孔庆东王学超
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap