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Method for treating high-salinity solid waste through iron tailings

A technology for solid waste and iron tailings, applied in the removal of solid waste, etc., can solve the problems of high salt content, secondary pollution, difficult to clean impurities, etc. Effect

Active Publication Date: 2019-04-16
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The third is low quality and poor quality
This method is more suitable for the by-product salt slag with less impurities and a single impurity component. Its disadvantage is that there is secondary pollution such as reprocessing of washing water or organic solvents: in addition, the impurity content in the by-product salt slag is often unstable, and the washing It is difficult to control the amount of water or solvent used, the impurities are difficult to wash, and it is difficult to realize industrialization
However, the range of salinity that salt-tolerant microorganisms can tolerate is limited, and due to high salt content and increased water density, activated sludge is easy to float and lose, resulting in reduced treatment efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Transport 50kg of high-salt solid waste to the crushing chamber of the mechanical impact crusher, vacuumize after sealing, extract the air in the crushing chamber, and then put it under high vacuum conditions for 10 -3 Pa vacuum crushes the high-salt solid waste in the crushing chamber at a high speed of 2400 rpm for 25 minutes. Obtain sample 100g evenly from above-mentioned gained solid particle, put into the beaker of 2000ml, mass concentration is that 100ml of sodium hydroxide alkaline solution 100ml adds the high-salt solid waste particle after pulverizing, fully mixes 30 minutes, then filters, to Add 180 ml of deionized water to the filter cake for washing, so that the pH of the solution reaches the range of 6-8. Then add 70 ml of 10% sodium hydroxide alkaline solution in mass concentration, treat for 30 minutes, wait for the solution to be clear, and then filter. Then add 15% dilute hydrochloric acid aqueous solution, so that the pH of the above solution reaches ...

Embodiment 2

[0042] Transport 50kg of high-salt solid waste to the crushing chamber of the mechanical impact crusher, vacuumize after sealing, extract the air in the crushing chamber, and then put it under high vacuum conditions for 10 -4 Pa vacuum crushes the high-salt solid waste in the crushing chamber at a high speed of 2500 rpm for 25 minutes. Obtain 100g of sample evenly from the solid particles obtained above, put it into a 2000ml beaker, add 100ml of 15% sodium hydroxide alkaline solution by mass percentage to the crushed high-salt solid waste particles, mix thoroughly for 40 minutes, and then filter , add 200ml of deionized water to the filter cake, so that the pH of the solution reaches the range of 6-8. Then add 70 ml of 15% sodium hydroxide alkaline solution by mass percentage, treat for 30 minutes, wait for the solution to be clear, and then filter. Then add 20% dilute hydrochloric acid aqueous solution to make the pH of the above solution reach 6-8, presenting a neutral solu...

Embodiment 3

[0046] Transport 50kg of high-salt solid waste to the crushing chamber of the mechanical impact crusher, vacuumize after sealing, extract the air in the crushing chamber, and then put it under high vacuum conditions for 10 -5 Pa vacuum crushes the high-salt solid waste in the crushing chamber at a high speed of 2800 rpm for 25 minutes. Obtain 100g of sample evenly from the solid particles obtained above, put it into a 2000ml beaker, add 100ml of 20% sodium hydroxide alkaline solution by mass percentage to the crushed high-salt solid waste particles, mix thoroughly for 50 minutes, and then filter , add 220ml of deionized water to the filter cake, so that the pH of the solution reaches the range of 6-8. Then add 70 ml of 20% sodium hydroxide alkaline solution by mass percentage, treat for 30 minutes, wait for the solution to become clear, and then filter. Then add 25% dilute hydrochloric acid aqueous solution, so that the pH of the above solution reaches 6-8, presents a neutral...

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Abstract

The invention provides a method for treating high-salinity solid waste through iron tailings. According to the method, the iron tailings are treated through a high polymer material, a porous materialis obtained, then the porous material is loaded with biological halophilic bacteria, and under the proper content of the material and proper operating parameters, the high-salinity solid waste is treated. The biological halophilic bacteria are moderate halophilic bacteria specifically. The high polymer material is epoxy resin. The management pressure of the iron tailing waste generated after minebeneficiation is relieved, and comprehensive utilization of the iron tailings can be promoted.

Description

technical field [0001] The invention provides a method for treating high-salt solid waste, which relates to the research field of environmental pollution remediation technology, and at the same time relates to the comprehensive utilization of tailings. Background technique [0002] The chemical industry, especially petrochemical, coal chemical, fine chemical and other industries, produces a large amount of high-concentration salt-containing organic wastewater, waste sodium chloride salt, waste sodium sulfate salt and other waste salt every year, and by-product salt has become a bottleneck for the sustainable development of the industry At the same time, it is also a key issue of great concern to the society, the public and government departments. The characteristics of by-product salt are that the source involves a wide range of industries, the characteristic pollutants are complex, and the nature of the toxicity is not clear. Second, chemical by-product salts mainly includ...

Claims

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Application Information

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IPC IPC(8): B09B3/00
CPCB09B3/00
Inventor 薛刚王东哲梁金生罗雄一王丽银
Owner HEBEI UNIV OF TECH
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