Method and system for processing desulphurization waste water

A technology for desulfurization wastewater and wastewater, applied in energy wastewater treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of limited climate conditions, high cost, expensive anti-corrosion materials, etc., to reduce water evaporation and reduce water consumption , the effect of low operating cost

Active Publication Date: 2009-04-29
CHENGDU RAISE ENVIRONMENTAL PROTECTION TECH CO LTD
View PDF0 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Exposure and solidification of desulfurization wastewater requires a large site and is limited by climatic conditions;
[0006] 2. The use of heaters to evaporate and solidify desulfurization wastewater has serious corrosion and scaling problems, requires expensive anti-corrosion materials, and is difficult to contr...

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 system for processing desulphurization waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0057] A 330MW unit adopts the limestone / gypsum desulfurization process for flue gas desulfurization, the desulfurization wastewater volume is about 6T / h, the solid content is 5000-10000mg / L, Cl - 1000~20000mg / L; the average temperature of the flue gas after the electrostatic precipitator is 130°C, and the flue gas volume (wet basis) is 1.25 million Nm 3 / h, 8% of the flue gas is introduced, that is, 100,000 Nm 3 / h (wet basis) enters the drying tower, a small part of which enters the bubbling and stirring device, and the rest enters the lower part of the drying tower. The system operates normally. When the liquid level of the circulating wastewater pool reaches a certain height, increase the input of hot flue gas. Up to 15%. The operation of this system does not affect the work of the desulfurization island.

[0058] In addition, the acid-base wastewater with high salt content discharged from the chemical water treatment workshop of the power plant is usually difficult to r...

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 method and a system for treating desulfurization wastewater, which are applied to treating the wastewater generated from limestone-plaster wet flue gas desulfurization and other wastewater with high salt content. The system comprises a drying tower, a circular spray system, a flue gas stirring device and a filter press. The method comprises the steps: in the drying tower, hot flue gas and desulfurization wastewater exchange heat through convection contact so as to lead the wastewater to evaporate and concentrate to generate crystal; the filter press is adopted to carry out solid-liquid separation; and mother liquor continually refluxes and is treated. The method and the system have the advantages of low cost, little area occupation and low energy consumption, which can realize zero discharge of the wastewater of the limestone-plaster wet flue gas desulfurization technology and improve contribution.

Description

technical field [0001] The invention discloses a method and system for treating desulfurization wastewater, which is particularly suitable for treating wastewater produced by limestone-gypsum wet flue gas desulfurization, and is also suitable for treating wastewater with high salt content. Background technique [0002] There are more than 200 desulfurization technologies studied internationally, which are divided into three forms, namely desulfurization before combustion, desulfurization during combustion, and desulfurization after combustion. Only the third type is the only large-scale commercial application technology in the world. The third form is divided into wet method, dry method and semi-dry method according to the form of desulfurizer; and the most important flue gas desulfurization technology in wet method is the wet limestone / lime method in the United States and the wet limestone / gypsum method in Japan. [0003] China's power plant flue gas desulfurization technol...

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): C02F1/10C02F1/12
CPCY02W10/37
Inventor 余乐
Owner CHENGDU RAISE ENVIRONMENTAL PROTECTION TECH CO LTD
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