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

Method and device for realizing zero emission of strong brine

A technology of concentrated brine and zero discharge, applied in water softening, chemical instruments and methods, water pollutants, etc., can solve the problems of high cost and great harm of crystalline miscellaneous salts, and achieve convenient source of medicament, high concentration multiple, The effect of mild reaction conditions

Active Publication Date: 2016-05-04
GO HIGHER ENVIRONMENT GRP CO LTD
View PDF7 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a method and device for zero discharge of concentrated brine. Before producing crystalline miscellaneous salts, a process combination is used to remove heavy metals, phenols and other organic substances defined as hazardous wastes. After pre-concentration, evaporation and crystallization are carried out. The crystalline salts produced meet the requirements of industrial Using the standard of salt solves the disadvantages of high cost and great harm of crystalline miscellaneous salt produced by the existing concentrated brine treatment technology, and realizes the resource utilization of crystalline miscellaneous salt

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
  • Method and device for realizing zero emission of strong brine
  • Method and device for realizing zero emission of strong brine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Example 1: Concentrated water discharged from a reclaimed water reuse device in a coal-to-gas plant, treated water volume: 82m 3 / h, COD content in raw water is 500-800mg / L, TOC is 140-200mg / L, TDS is 9000-11000mg / L, total hardness is 400-600mg / L, and total alkalinity is 1800-2000mg / L. The specific processing method is as follows:

[0096] Adjust the pH of the concentrated brine to 9.5, add magnesium oxide 100mg / L, choose PFS as the coagulant, and the dosage is 20mg / L, and use cationic PAM as the coagulant aid, and the dosage is 2mg / L, and carry out chemical precipitation treatment. COD removal rate is 20%, SiO 2 The removal rate is 75%, and the removal rate of heavy metals is 90% on average; the lime-soda ash softening method is used to soften the impurity-removed effluent, and the total hardness removal rate is 90%; the softened effluent is pre-oxidized, and the refractory organic matter is treated with ozone oxidation. Pre-oxidation treatment is carried out, and B / ...

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
working pressureaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method and a device for realizing zero emission of strong brine, overcoming the defects that the existing strong brine treatment technology is high in crystallized impurity salt treatment cost and severe in harm. The impurity removal, softening, pre-oxidation, biochemical and strong oxidation techniques are used for purifying the strong brine, the strong brine after being treated is pre-concentrated by adopting a reverse osmosis way, the reverse osmosis concentrated water is further purified by adopting an adsorption method, and finally the evaporation and quality-divided crystallization technology is used for separating the water to obtain industrial salt. By adopting the method and device, the zero emission of the strong brine is realized, the emission of dangerous waste is reduced, and the recycling is realized. Meanwhile, the general process is mature, the design is reasonable, the impact load resistance is relatively high, the chemical source is convenient, and the cost is low.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a method and device for zero discharge of concentrated brine. Background technique [0002] Coal chemical, petrochemical and other chemical concentrated brine mainly comes from circulating sewage, chemical water station drainage, and two-stage reverse osmosis concentrated water from reclaimed water reuse devices. Its composition is complex, including inorganic salts, organic matter, and a small amount of chemicals used in pretreatment, desalination, etc., such as scale inhibitors, acids, and other reaction products. The TDS content of concentrated brine is generally 10,000-50,000mg / L, mainly containing inorganic cations such as sodium, potassium, calcium, magnesium, aluminum, and inorganic anions such as chloride, sulfate, and nitrate ions. In addition, heavy metals mainly include arsenic, barium, Cadmium, lead, copper, zinc, etc. Another feature of concentrated brine is that...

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): C02F9/14C02F101/20
CPCC02F9/00C02F1/20C02F1/283C02F1/04C02F1/5254C02F1/66C02F1/4672C02F1/52C02F1/441C02F2305/026C02F2301/066C02F2101/20C02F1/725C02F1/78C02F3/00C02F5/02C02F3/30Y02A20/131
Inventor 陈福泰杨艳
Owner GO HIGHER ENVIRONMENT GRP CO LTD
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