Material recovery method of wastewater containing high-concentration ammonia-nitrogen and heavy metal ions and treatment system

A heavy metal ion, high-concentration technology, applied in the field of water treatment, can solve problems such as failure to meet discharge standards, and achieve the effect of reducing harm

Inactive Publication Date: 2013-12-25
SUZHOU SUJING ENVIRONMENTAL ENG
View PDF8 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still a certain amount of metal ions in the wastewater treated by this method, which cannot meet the discharge standards, and most of the heavy metal ions and nitrogen elements in the wastewater are of use value. In line with the principles of reducing pollution, waste utilization and cost saving Valuable materials in wastewater should be treated and reused

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
  • Material recovery method of wastewater containing high-concentration ammonia-nitrogen and heavy metal ions and treatment system
  • Material recovery method of wastewater containing high-concentration ammonia-nitrogen and heavy metal ions and treatment system
  • Material recovery method of wastewater containing high-concentration ammonia-nitrogen and heavy metal ions and treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The preferred embodiment of the present invention will be described in detail below in conjunction with accompanying drawing:

[0020] Press as Figure 1-2 The connection relationship of the wastewater treatment system is shown. First, the generated high-concentration ammonia nitrogen and heavy metal ion wastewater is introduced into the collection pool 1 and mixed evenly, and then introduced into the pH adjustment pool 2, and NaOH solution is added to adjust the pH to 9.5~11, and fully mixed under stirring conditions , making heavy metal ions Cu in wastewater 2+ Same as OH - Reaction occurs to form Cu(OH) which is insoluble in water 2 , then the waste water enters the batch sedimentation tank 3 for precipitation, and the first-level supernatant produced is introduced into the filtrate tank 4, and the Cu(OH) 2 The sediment is extracted through the sludge suction device, and after being filtered by the filter 13, the filtrate enters the filtrate pool 4, and the Cu(OH)...

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 relates to a material recovery method of wastewater containing high-concentration ammonia-nitrogen and heavy metal ions and a wastewater treatment system. The material recovery method comprises the following steps: regulating the pH value, ammonia stilling, precipitating, evaporating and the like. The invention further relates to the corresponding treatment system. After the adoption of alkali liquor to precipitate metal ions, sodium sulfide is continuously added to further remove the metal ions left in the waste liquor to reach the emission standard; stronger ammonia water, solid precipitates and the like produced during the wastewater treatment process are recovered to reduce the environmental harm effectively and produce certain economic benefits.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a material recovery method and a wastewater treatment system for wastewater containing high-concentration ammonia nitrogen and heavy metal ions. Background technique [0002] With the development of society and the progress of science and technology, people's exploration in the field of chemical industry is getting deeper and deeper, and various complex and high-concentration industrial production wastewater is also produced. For example, in metallurgy, electroplating, battery and other industries, high-concentration ammonia-nitrogen wastewater is often produced, and it also contains high-concentration inorganic salts and heavy metal ions. Although ammonia nitrogen can be removed from water by adjusting the pH of the solution to alkaline, and then using evaporation to transfer ammonia molecules to the gas phase. However, when there are heavy metal ions capable of ammonia complexat...

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): C02F9/10C01C1/10
Inventor 陈茂林钱为刘兴丁兆浩
Owner SUZHOU SUJING ENVIRONMENTAL ENG
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