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

Treatment method of mine wastewater

A technology for mine wastewater and mine acid wastewater, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as high treatment cost and substandard effluent quality, and achieve operational Convenient and simple, good application prospects, cost-saving effect

Inactive Publication Date: 2011-06-01
DONGHUA UNIV
View PDF2 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technologies currently used are mainly due to the high cost of treatment when treating single wastewater, and the problems that the effluent quality is not up to standard when comprehensively treating wastewater, so it needs to be solved urgently

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 500ml of mine acid wastewater and flotation wastewater into a 1L mixing cup. The two wastewaters react rapidly, and a small amount of irritating gas may be released at this time, which is produced by the decomposition of flotation agents when they encounter acid. Place the mixing cup under the mixer, set the mixing program, start stirring at 300r / min, and add 1ml of H with an effective substance content of 35% in 30s 2 o 2 Solution, continue to stir rapidly for 5 minutes and stir at a slow speed of 60r / min for 5 minutes. At this time, a certain amount of flocculent precipitates are formed in the water, and stand for 20 minutes until the formed flocs are completely precipitated. Pour the supernatant into another mixing cup, turn on the mixer and stir at a speed of 300r / min, and add milk of lime solution with a concentration of 200g / L at the same time, until the supernatant of the mixed solution is clear and transparent, stop adding milk of lime. The pH value of the...

Embodiment 2

[0022] Take 500ml of mine acidic wastewater and 250ml of flotation wastewater into a 1L mixing cup. The two wastewaters undergo a rapid chemical reaction. At this time, a small amount of irritating gas may be released, which is produced by the decomposition of the flotation agent when it encounters acid. Place the mixing cup under the mixer, set the mixing program, start stirring at 300r / min, and add 1ml of H with an effective substance content of 35% in 30s 2 o 2 Solution, continue to stir rapidly for 5 minutes and stir at a slow speed of 60r / min for 5 minutes. At this time, a certain amount of flocculent precipitates are formed in the water, and stand for 20 minutes until the formed flocs are completely precipitated. Pour the supernatant into another mixing cup, turn on the mixer and stir at a speed of 300r / min, and add milk of lime solution with a concentration of 200g / L at the same time, until the supernatant of the mixed solution is clear and transparent, stop adding milk...

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
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a treatment method of mine wastewater. The method comprises the following steps: (1) mixing acidic mine wastewater and flotation wastewater in a volume ratio of (1:1)-(2:1), stirring to mix the wastewater uniformly, adding H2O2, continuously stirring to react, and then standing for layering; and (2) taking the layered supernatant, adding lime milk to adjust the pH value of the wastewater to 6.0-8.0, adding a polyacrylamide (PAM) solution after the generation of precipitates, stirring, and standing for layering to obtain a supernatant which can be discharged according to the standard. By utilizing the method provided by the invention, the defects of the prior art can be overcome, the quality characteristics of raw water is fully utilized, and waste is treated with waste; and the pollutants in the water can be removed efficiently, the cost is low, and the method has a good application prospect.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a mine wastewater treatment method. Background technique [0002] The mining industry is a pillar industry of the national economy. In the process of mining and ore processing, a large amount of production wastewater is formed, including mine acid wastewater and flotation processing wastewater. The mine acid wastewater produced has low pH value, high chroma, and contains a large amount of heavy metal ions. If it is not treated, it will cause great harm to the surrounding environment. The lower pH value will acidify the water quality and soil, causing aquatic animals Extinction and crop yield reduction, especially once heavy metal ions enter the water body and soil, are difficult to remove, can accumulate in animals and plants, and then enter the human body through the food chain, and the hazard has a long incubation period and is difficult to appear in a short time. Among the...

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): C02F9/04
Inventor 柳建设张诚王兆慧付瑾王慧萍张萌袁瑞霞张武刚洪武林叶洁琼吴根英
Owner DONGHUA UNIV
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