Intermetallic compound film pretreatment method in seawater desalination process

An intermetallic compound and pretreatment technology, which is applied in seawater treatment, permeation/dialysis water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., to reduce the difficulty of sealing, improve water production capacity, and stable operation

Active Publication Date: 2007-08-15
NANJING TECH UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to improve the efficiency of the seawater desalination pretreatment system, a kind of pretreatment method for reverse osmosis desalination of seawater using titanium-aluminum intermetallic compound membrane with excellent physical and mechanical properties is proposed, which not only solves the The sealing problem between the membrane and the membrane module is solved, and the effluent water quality is further improved, the operating cost is reduced, and the long-term stable and continuous operation of the reverse osmosis seawater desalination system is guaranteed to the greatest extent.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] After the seawater is pressurized to 0.8MPa, it enters the titanium-aluminum intermetallic compound membrane filtration unit. After the titanium-aluminum intermetallic compound membrane pretreatment, the turbidity of the effluent is 0.05NTU, and all indicators meet the requirements of the reverse osmosis membrane system.

[0022] In this pretreatment system, the titanium-aluminum intermetallic compound membrane has a nominal pore size of 20nm, a circular tube shape, and a seawater membrane surface velocity of 3 m / s.

Embodiment 2

[0024] A pretreatment method of titanium-aluminum intermetallic compound membrane in the reverse osmosis seawater desalination process. It first uses NaClO to sterilize the fresh seawater in the sedimentation tank, adds ferric chloride for flocculation and sedimentation, and uses a multi-media filtration system to remove the impurities in the system. The flocculation suspended solids, etc., the effluent is pressurized to 0.5MPa and enters the titanium-aluminum intermetallic compound membrane filtration unit. After the titanium-aluminum intermetallic compound membrane pretreatment, the turbidity of the effluent is 0.05NTU, and all indicators have reached the reverse osmosis membrane system. Require.

[0025] In this pretreatment system, the titanium-aluminum intermetallic compound membrane has a nominal pore size of 50nm, a circular tube shape, and a seawater membrane surface velocity of 1 m / s.

Embodiment 3

[0027] A pretreatment method of titanium-aluminum intermetallic compound membrane in the process of reverse osmosis seawater desalination, which includes firstly using NaClO to sterilize the fresh seawater in the settling tank, adding ferric chloride for flocculation and sedimentation, and using a multi-media filtration system to remove the system The flocculation and suspended solids in the filter are pressurized to 0.2MPa and then enter the titanium-aluminum intermetallic compound membrane filtration unit. After the titanium-aluminum intermetallic compound membrane pretreatment, the turbidity of the effluent is 0.05NTU, and all indicators have reached the requirements of the reverse osmosis membrane system. Require.

[0028] In this pretreatment system, the titanium-aluminum intermetallic compound membrane has a nominal pore size of 100nm, a circular tube shape with 37 channels, and a seawater membrane surface velocity of 0.5 m / s.

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
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to view more

Abstract

The present invention is characterized by that under the action of pressure the sea water can be fed into titanium and aluminium (TiAl) intermetallic compound membrane filtration unit, the impurity in the sea water can be trapped by said unit, and the pretreated water flowed out from said unit can meet the requirements of reverse osmosis system.

Description

technical field [0001] The invention relates to seawater desalination technology, in particular to a method for pretreatment of titanium-aluminum intermetallic compound film in seawater desalination. Background technique [0002] Water is the basis for human survival, but there is very little fresh water that can be directly used by human beings. Since the beginning of the 21st century, the shortage of fresh water resources has become an urgent problem that countries all over the world need to solve. As we all know, most of the water on the earth is seawater. However, seawater has high salinity and cannot be directly drunk. Desalination of seawater is an important method to reduce the salinity of seawater. At present, the main methods of seawater desalination are: distillation, reverse osmosis, freezing, hydration, solvent extraction, etc. Among them, the reverse osmosis method has broad application prospects and has been widely promoted. The reverse osmosis seawater desal...

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 Patents(China)
IPC IPC(8): C02F1/44C02F1/52C02F1/50C02F103/08
CPCY02A20/131
Inventor 徐南平邢卫红贺跃辉范益群李卫星王俊
Owner NANJING TECH 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