Device for removing disinfection byproducts in water

A technology for disinfection by-products and water removal, applied in multi-stage water treatment, water/sewage treatment, water/sewage multi-stage treatment, etc. The effect of clean and civilized production, extended service life and simple equipment

Inactive Publication Date: 2016-08-17
珠海启月生物科技有限公司
View PDF11 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the disinfectants and methods that replace chlorination disinfection mainly include chloramine, ozone and ultraviolet light, etc.: studies have found that reducing the ratio of chlorine to ammonia nitrogen to 5 can reduce the DBPs generated by chlorine disinfection alone by 89%; The amination process not only achieves some of the efficacy of pre-oxidation processes, but also prolongs the contact time of chloramine disinfection and improves the microbial safety of drinking water, but Plewa J, a genetic toxicologist in the Department of Food Science at the University of Illinois Michael's research found that a chloramine disinfection by-product is the most toxic found so far; as a strong oxidant, ozone's bactericidal and oxidizing capabilities are higher than chlorine, and it...

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
  • Device for removing disinfection byproducts in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The water sample to be treated is the swimming pool water after disinfection of a swimming pool, in which the types of DBPs are mainly THMs and HAAs (haloacetic acids), and the THMs and HAAs are between 230μg / L-260μg / L and 140μg / L-420μg / L respectively Fluctuation, the method includes the following steps:

[0069] (1) Enhanced coagulation:

[0070] Adding water to polyferric sulfate with an iron content of 25wt% makes it a coagulant with a concentration of 5 mg / L;

[0071] Add water to cationic polyacrylamide with a molecular weight of 3000kDa to prepare a coagulant aid with a concentration of 20mg / L;

[0072] Put the coagulant and coagulant aid into the water sample to be treated, the dosage is 50mg / L and 0.15mg / L in turn, adjust the pH value to 8 and then stir, the stirring speed is 400r / min, the stirring time for 15 minutes, then let stand for 25 minutes;

[0073] (2) Ultrafiltration:

[0074] The ultrafiltration membrane device 2 comprises an ultrafiltration memb...

Embodiment 2

[0085] The water sample to be treated is tap water in a certain city as an example. THMs and HAAs fluctuate between 10 μg / L-35 μg / L and 1.4 μg / L-4.5 μg / L respectively. The steps of the method are similar to those in Example 1, except that:

[0086] (1) Enhanced coagulation:

[0087] Adding water to polyferric sulfate with an iron content of 15wt% makes it a coagulant with a concentration of 15mg / L;

[0088] Add water to cationic polyacrylamide with a molecular weight of 3000kDa to prepare a coagulant aid with a concentration of 23mg / L;

[0089]Put the coagulant and coagulant aid into the water sample to be treated, the dosage is 40mg / L and 0.10mg / L in turn, adjust the pH value to 7.5 and then stir, the stirring speed is 60r / min, the stirring time for 15 minutes, then let stand for 15 minutes;

[0090] (2) Ultrafiltration:

[0091] The ultrafiltration membrane device 2 comprises an ultrafiltration membrane, and the ultrafiltration membrane is a charge-filled ultrafiltration ...

Embodiment 3

[0099] The water sample to be treated is tap water in a certain city as an example. THMs and HAAs fluctuate between 10 μg / L-35 μg / L and 1.4 μg / L-4.5 μg / L respectively. The steps of the method are similar to those in Example 1, except that:

[0100] (1) Enhanced coagulation:

[0101] Adding water to polyferric sulfate with an iron content of 20wt% makes it a coagulant with a concentration of 15 mg / L;

[0102] Add water to cationic polyacrylamide with a molecular weight of 3000kDa to prepare a coagulant aid with a concentration of 24mg / L;

[0103] Put the coagulant and coagulant into the water sample to be treated, the dosage is 45mg / L and 0.096mg / L in turn, adjust the pH value to 6.41 and then stir, the stirring speed is 200r / min, the stirring time for 20min, then stand still for 20min;

[0104] (2) Ultrafiltration:

[0105] The ultrafiltration membrane device 2 comprises an ultrafiltration membrane, and the ultrafiltration membrane is a charge-filled ultrafiltration membran...

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 device for removing disinfection byproducts in water. The device comprises an enhanced coagulation tank, an ultrafiltration membrane component, a nanofiltration membrane component, a pervaporation membrane component and a collection device, wherein a to-be-treated water sample sequentially flows through the enhanced coagulation tank, the ultrafiltration membrane component, the nanofiltration membrane component and the pervaporation membrane component for treatment and then flows to the collection device for collection. In the device for removing disinfection byproducts in water, provided by the invention, the enhanced coagulation tank and a three-level integrated membrane device composed of the ultrafiltration membrane component, the nanofiltration membrane component and the pervaporation membrane component are combined to remove the disinfection byproducts in water; and through organic combination of the devices, the removal rate of the disinfection byproducts exceeds 90%, the disinfection byproducts in water can be effectively reduced, the water quality requirements on safe water are met, and the device is of important significance to purifying the swimming pool water, the drinking water and the like after chlorination disinfection.

Description

technical field [0001] The invention relates to a water treatment device, in particular to a device for removing disinfection by-products in water. Background technique [0002] Chlorination disinfection is the most widely used disinfection method in drinking water processing and has a history of hundreds of years. However, the chlorination disinfection method will inevitably produce chlorination disinfection by-products (DBPs). As early as 1974, studies have found that DBPs have strong carcinogenic, teratogenic, and mutagenic effects, which seriously endanger human health. [0003] In order to ensure the safety of human water use, the control of DBPs in water has been highly valued by countries all over the world. At present, the United States reduces the maximum allowable concentration of THMs in drinking water in two stages: in the first stage, THMs are reduced from 100 μg / L to 80 μg / L; in the second stage, THMs are further reduced to 40 μg / L. my country has also made ...

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): C02F9/10B01D69/02B01D71/68B01D71/34B01D67/00
CPCB01D67/0006B01D69/02B01D71/34B01D71/68C02F1/442C02F1/444C02F1/448C02F1/5236C02F1/56C02F9/00C02F2301/08
Inventor 韩健健陈顺权
Owner 珠海启月生物科技有限公司
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