Technological method for controlling disinfection by-product and pathogenic microorganism risk of drinking water

A technology of pathogenic microorganisms and disinfection by-products, applied in chemical instruments and methods, adsorption water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problem that the safety of microorganisms in the effluent cannot be guaranteed, and the removal effect of virus-like microorganisms is not good Ideal, the increase of effluent chemical health risks and other problems, to achieve the effect of overcoming disinfection by-products, improving removal performance, and good flocculation effect

Inactive Publication Date: 2012-08-15
FUDAN UNIV
View PDF6 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the composition of various organic pollutants in slightly polluted water sources becomes more complex and the concentration level gradually increases, in addition to conventional bacterial microorganisms, the pollution of viral microorganisms intensifies, and the traditional drinking water treatment process has become insufficient. On the one hand, It cannot effectively remove the organic matter, e

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
  • Technological method for controlling disinfection by-product and pathogenic microorganism risk of drinking water
  • Technological method for controlling disinfection by-product and pathogenic microorganism risk of drinking water
  • Technological method for controlling disinfection by-product and pathogenic microorganism risk of drinking water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Experimental research is carried out on the process method of the present invention, the slightly polluted raw water enters the biological pretreatment tank, and the influent flow rate is controlled by a constant flow pump to 0.4 m 3 / d, the aeration air-water ratio in the tank is 1:1; the effluent enters the pre-ozone contact tank, the pre-ozone dosage is 0.5 mg / L, and the contact time is 10 min; the effluent enters the folding plate flocculation tank before adding polysulfide aluminum chloride , dosage 8.9 mg / L (as Al 2 o 3 After 15 minutes of effective flocculation, the effluent enters the inclined tube sedimentation tank, and the effective sedimentation time is 106 minutes; then enters the sand filter and enters the main ozone contact tank after filtration, the main ozone dosage is 2.5 mg / L, and the contact time is 20 minutes ; Then it enters the disinfection pool after being filtered by the activated carbon filter. The amount of chlorine added is 1.5~2.5 mg / L acco...

Embodiment 2

[0043] Experimental research is carried out on the process method of the present invention, the slightly polluted raw water enters the biological pretreatment tank, and the influent flow rate is controlled by a constant flow pump to 0.6 m 3 / d, the aeration air-water ratio in the tank is 1:1; the effluent enters the pre-ozone contact tank, the pre-ozone dosage is 0.5 mg / L, and the contact time is 10 min; the effluent enters the folding plate flocculation tank before adding polysulfide aluminum chloride , dosage 8.9 mg / L (as Al 2 o 3 After 15 minutes of effective flocculation, the effluent enters the inclined tube sedimentation tank, and the effective sedimentation time is 106 minutes; then enters the sand filter and enters the main ozone contact tank after filtration, the main ozone dosage is 2.5 mg / L, and the contact time is 20 minutes ; Then it enters the disinfection pool after being filtered by the activated carbon filter. The amount of chlorine added is 1.5~2.5 mg / L acco...

Embodiment 3

[0047] Experimental research is carried out on the process method of the present invention, the slightly polluted raw water enters the biological pretreatment tank, and the influent flow rate is controlled by a constant flow pump to 0.8 m 3 / d, the aeration air-water ratio in the tank is 1:1; the effluent enters the pre-ozone contact tank, the pre-ozone dosage is 0.5 mg / L, and the contact time is 10 min; the effluent enters the folding plate flocculation tank before adding polysulfide aluminum chloride , dosage 8.9 mg / L (as Al 2 o 3 After 15 minutes of effective flocculation, the effluent enters the inclined tube sedimentation tank, and the effective sedimentation time is 106 minutes; then enters the sand filter and enters the main ozone contact tank after filtration, the main ozone dosage is 2.5 mg / L, and the contact time is 20 minutes ; Then it enters the disinfection pool after being filtered by the activated carbon filter. The amount of chlorine added is 1.5~2.5 mg / L acco...

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 technological method for controlling the disinfection by-product and pathogenic microorganism risk of drinking water, belonging to the field of drinking water treatment. The drinking water is produced by combining biological pretreatment, pre-ozonation, main ozonation, active carbon filter and conventional coagulation-precipitation-sand filtration-disinfectant fluid treatment technology, and the method is a feed water treatment technological method which is developed for the micro-pollution raw water and controls the disinfection by-product and pathogenic microorganism heath risk in the water purifying process. The micro-polluted raw water sequentially enters a biological pretreatment tank, a pre-ozonation contact tank, a folded-plate flocculating tank, an inclined-tube sedimentation tank, a sand filter, a main ozonation contact tank, an active carbon filter and a disinfection tank, and finally flows into a clean water reservoir. Through the application of the biological pretreatment, two-level ozone oxidation and active carbon technology, the removal effect on the turbidity, organic matters, the disinfection by-product precursor, the virus microorganism, bacteria microorganism and the like is obviously improved, and the water quality and safety are obviously superior to those of the traditional coagulation sedimentation technology.

Description

technical field [0001] The invention relates to the technical field of drinking water treatment, in particular to a process method for controlling the risks of disinfection by-products and pathogenic microorganisms in drinking water. Background technique [0002] With the development of industry, agriculture, social economy, and the continuous improvement of human material and cultural life, a large amount of industrial wastewater, agricultural irrigation, chemical fertilizers, pesticides, and domestic sewage are discharged into the natural water body environment, making urban drinking water sources increasingly polluted and becoming micro-polluted. source of water. In particular, the presence of various organic pollutants, viruses, and bacterial microorganisms in water sources significantly increases the risk of disinfection by-products and pathogenic microorganisms that may be produced in drinking water. At present, most urban water plants still use the traditional proces...

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): C02F9/14C02F1/78C02F1/52C02F1/50C02F1/28
Inventor 张强刘燕刘彬查晓松刘翔代瑞华张云蔡璇魏源源陆灏文吴瑾严杨蔚
Owner FUDAN 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
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