Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Membrane absorption deamination method and membrane absorption deamination system based on direct contact type microporous aeration enhancement

A microporous aeration and contact technology, which is applied in the field of membrane absorption and deamination system, can solve the problem of not being low, and achieve the effect of increasing volatilization rate, prolonging the service life of membrane and reducing resistance

Active Publication Date: 2020-06-09
GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
View PDF14 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the membrane aeration method can remove most of the ammonia nitrogen in the wastewater, the concentration of the ammonia nitrogen wastewater entering the membrane absorption contactor is still not low, and the hydrophilization problem caused by the membrane surface pollution caused by inorganic salts, colloids and organic matter in the wastewater is in the persists in the long run
[0007] So far, the hydrophilization problem caused by membrane fouling is still a bottleneck problem restricting the industrialization of membrane absorption process.

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
  • Membrane absorption deamination method and membrane absorption deamination system based on direct contact type microporous aeration enhancement
  • Membrane absorption deamination method and membrane absorption deamination system based on direct contact type microporous aeration enhancement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 30L of hydrometallurgical wastewater with an ammonia nitrogen concentration of 3000mg / L is treated by direct contact microporous aeration-enhanced membrane absorption and deamination method.

[0056] Membrane absorption deamination process: The ammonia nitrogen wastewater stock solution is flocculated and precipitated through the pretreatment device, and most of the suspended matter is filtered out. The pretreated high-ammonia nitrogen wastewater enters the raw water circulation tank, and sodium hydroxide is added to the raw water circulation through the dosing system to adjust the pH value of the raw water to 11.5, and the feed liquid pump is turned on, and the ammonia nitrogen wastewater from the raw water circulation tank enters the heat exchanger for preheating After reaching 35°C, pump into the shell side of the polytetrafluoroethylene (PTFE, filter pore size: 0.2-0.45μm) hollow fiber membrane contactor module; add 20L sulfuric acid with a concentration of 0.3mol / L ...

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
Login to View More

Abstract

The invention relates to the technical field of wastewater treatment, particularly to a membrane absorption deamination system and a membrane absorption deamination method based on direct contact typemicroporous aeration enhancement. In the direct contact type aeration enhanced membrane absorption deamination process, membrane surface pollution deposition can be reduced through aeration, so thatthe problems of membrane wetting and hydrophilization caused by membrane pollution are reduced, and the cleaning frequency of a membrane assembly is reduced; and a gas-liquid two-phase flow can be formed through aeration stripping, so that the resistance in a mass transfer process can be effectively reduced, the volatilization rate of ammonia in wastewater and the transmembrane speed of ammonia are increased, and the deamination efficiency is improved. The method has great advantages in the aspects of investment cost and operation cost, and is a novel wastewater deamination and ammonia recovery technology which is energy-saving, consumption-reducing and sustainable in resource development.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a membrane absorption deamination system and method based on direct contact microporous aeration enhancement. Background technique [0002] Ammonia nitrogen is one of the main factors causing water eutrophication and environmental pollution, which seriously threatens human production, life and ecological balance. How to economically and effectively remove and recover ammonia nitrogen in wastewater to reduce environmental pollution has become an urgent and important research topic. Due to the characteristics of high concentration of ammonia nitrogen, poor biodegradability and great environmental hazards, industrial ammonia nitrogen wastewater has become the main source of ammonia nitrogen in wastewater in my country. The discharge of industrial ammonia nitrogen wastewater into the water body not only causes eutrophication of the water body, causes black and odorous w...

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): C02F9/04C02F9/10B01D53/18B01D65/02C02F101/16
CPCC02F9/00B01D53/18B01D65/02C02F2101/16C02F1/44C02F1/00C02F2209/14C02F2209/40C02F2209/02C02F2209/03B01D2321/18B01D1/02
Inventor 陈静陈顺权钟文蔚吴启锦
Owner GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com