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

Reduction treatment method applied to high-salt-content wastewater of thermal power plant

A treatment method and high-salt technology, which is applied in water/sewage treatment, chemical instruments and methods, heating water/sewage treatment, etc., can solve the problem of high-salt wastewater treatment in thermal power plants that needs to be improved, easy scaling of equipment, and energy consumption advanced questions

Inactive Publication Date: 2020-08-07
GUANGDONG DEGA POWER ENVIRONMENTAL PROTECTION TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the multi-effect evaporation technology and steam mechanical recompression evaporation technology are widely used. The evaporation process consumes a lot of energy, and the equipment is prone to fouling, which seriously affects the performance of the equipment.
Therefore, the treatment of high-salt wastewater from thermal power plants needs to be improved

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
  • Reduction treatment method applied to high-salt-content wastewater of thermal power plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .

[0027] A system for reducing the amount of high-salt wastewater used in thermal power plants, including a stock solution tank 6, a preheater 8, an evaporator 1, a steam compressor 2, and a hydrocyclone 5. The liquid outlet of the raw liquid tank 6 is connected to the first liquid inlet of the preheater 8 (at A in the figure), and the first liquid outlet of the preheater 8 (at B in the figure) is connected to the bottom liquid chamber of the evaporator 1 101 connections. The liquid stored in the bottom liquid chamber 101 is pumped to the tube side of the evaporator 1 by the circulating pump 3 . The inlet end and the outlet end of the vapor compressor ...

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 discloses a reduction treatment method applied to high-salt-content wastewater of a thermal power plant. The method is applied to a wastewater treatment system and comprises the following steps: a seed crystal adding step: adding a proper amount of seed crystals into a vertical falling-film evaporator; a preheating step: conveying a stock solution to a preheater for preheating, and then conveying the preheated stock solution to the vertical falling-film evaporator; an evaporation step: circularly evaporating and concentrating the stock solution in the vertical falling-film evaporator; and a crystal grain recovery step: conveying a concentrated solution obtained after concentration to a hydrocyclone, separating the crystal seeds by using the hydrocyclone, conveying the separated crystal seeds back to the vertical falling-film evaporator, and conveying the concentrated solution from which the crystal seeds are separated into a concentrated solution tank. In the processes ofevaporation and concentration, although the wastewater is continuously concentrated and reduced, the inner wall of a bottom liquid cavity is not prone to scaling due to the fact that seed crystal balance in circulating liquid (located in the bottom liquid cavity) is effectively maintained, and the working performance of the evaporator is kept.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a method for reducing the amount of high-salt wastewater used in thermal power plants. Background technique [0002] Wastewater from thermal power plants includes domestic sewage and industrial wastewater. The quality of each type of wastewater is different, and the treatment scale is large, difficult, and energy-consuming. With the increasingly stringent national requirements for wastewater discharge standards, "wastewater reduction" and "zero wastewater discharge" will become an irresistible trend. How to effectively treat and reuse wastewater is a common problem faced by thermal power plants. At present, the wastewater treatment systems of most thermal power plants in China can only treat general industrial wastewater and domestic sewage, and have poor treatment effects on high-salt wastewater such as chemical acid-base regeneration high-salt wastewater, fine-treatment regenera...

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): B01D1/00B01D1/06B01D1/28C02F1/04C02F1/08
CPCB01D1/0082B01D1/0094B01D1/28C02F1/041B01D1/065C02F1/08
Inventor 吴靓陈卓彬黄震覃涛
Owner GUANGDONG DEGA POWER ENVIRONMENTAL PROTECTION TECH 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