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Method for preparing acidic mine waste water adsorption material from waste soybean husks

A technology of acidic mine wastewater and adsorption materials, which is applied in mining wastewater treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of great environmental and human hazards, secondary environmental pollution, and high operating costs, and achieve adsorption Remarkable effect, low cost, simple and easy operation

Inactive Publication Date: 2016-05-04
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem that the present invention mainly solves: for the SO in current acid mine wastewater 4 2 The content is large, which is harmful to the environment and the human body. However, the traditional removal technology has the problems of high operating cost, secondary environmental pollution and low removal rate. After crushing it, add deionized water to react and centrifuge, then add hydrochloric acid solution and sodium hydroxide solution to the centrifugal filter residue to modify, then add egg shells to enhance adsorption, and finally obtain a kind of waste soybean shell through microwave sintering furnace. Acid mine wastewater adsorption material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019]First, take 500g of discarded soybean shells, wash them repeatedly with clean water once, remove the surface soil and impurities, spread them evenly in a pineapple sieve, put them in the sun for 8 hours, and turn them in the sun every 2 hours until the soybean shells are free of any moisture and the color until it turns yellow; then put the above-mentioned soybean husks that have changed color in the sun into a grinder, grind them for 10 minutes, and pass through an 80-mesh sieve to obtain soybean husk particles, and then put the obtained soybean granules into the reaction kettle, and add soybean granules into it 4 times the mass of deionized water, stir and mix evenly, heat at 70°C for 3 hours, after the heating is completed, transfer the heated soybean mixture into a centrifuge, centrifuge at a speed of 800r / min for 20min, remove the supernatant, and obtain Centrifugal bean dregs; Next, put the centrifugal bean dregs obtained above into a container, place it in a cool p...

example 2

[0022] First, take 650g of discarded soybean shells, wash them twice with clean water, remove the surface soil and impurities, spread them evenly in a pineapple sieve, and put them in the sun for 9 hours, and turn them over every 2 hours until the soybean shells are free of any moisture and the color until it turns yellow; then put the above-mentioned soybean husks that have changed color after drying in the sun into a grinder, grind them for 3 minutes, and pass through a 90-mesh sieve to obtain soybean husk particles, and then put the obtained soybean granules into the reaction kettle, and add soybean granules into it 5 times the mass of deionized water, stir and mix evenly, heat at 75°C for 3.5h, after the heating is complete, transfer the heated soybean mixture into a centrifuge, centrifuge at a speed of 850r / min for 23min, remove the supernatant, Obtain centrifugal bean dregs; Next, put the centrifugal bean dregs obtained above into a container, place it in a cool place, le...

example 3

[0025] First, take 800g of discarded soybean shells, rinse them with clean water for 3 times, remove the soil and impurities on the surface, spread them evenly in a pineapple sieve, put them in the sun for 10 hours, and turn them in the sun every 2 hours until the soybean shells have no moisture and the color until it turns yellow; then put the above-mentioned soybean husks that have changed color in the sun into a grinder, grind them for 15 minutes, and pass through a 100-mesh sieve to obtain soybean husk particles, then put the obtained soybean granules into the reaction kettle, and add soybean granules into it 6 times the mass of deionized water, stir and mix evenly, heat at 80°C for 4 hours, after the heating is completed, transfer the heated soybean mixture into a centrifuge, centrifuge at a speed of 900r / min for 25min, remove the supernatant, and obtain Centrifugal bean dregs; Next, put the centrifugal bean dregs obtained above into a container, place it in a cool place, ...

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Abstract

The invention discloses a method for preparing an acidic mine waste water adsorption material from waste soybean husks, belonging to the technical field of waste water treatment. The method comprises the following steps: crushing the waste soybean husks and then adding the crushed waste soybean husks into deionized water for a reaction and centrifugation; adding a hydrochloric acid solution and a sodium hydroxide solution into a centrifugation filter residue for modification; then adding egg shells to improve adsorptivity; and carrying out treatment in a microwave sintering furnace so as to obtain the acidic mine waste water adsorption material prepared from the waste soybean husks. Actual cases prove that the prepared acidic mine waste water adsorption material uses easily available raw materials, is reduced in cost, realizes waste reutilization, is simple and easily practicable in operation, has obvious adsorption effect and enables the removal rate of SO4<2> in acidic mine waste water to reach more than 90%.

Description

technical field [0001] The invention discloses a method for preparing an acidic mine wastewater adsorption material by using discarded soybean shells, and belongs to the technical field of wastewater treatment. Background technique [0002] According to statistics, the discharge of various types of mine wastewater in my country is about 2.5 billion m3 per year. 3 , accounting for about 10% of the national industrial wastewater discharge. Among them, acid mine wastewater (AMD) contains a large amount of soluble toxic metal ions and SO 4 2 , has become one of the most serious environmental problems in the mining process. The source of AMD is generally considered to be that in the mining process of coal mines and various metal ores, sulfide-containing ores are exposed to the air and oxidized, and gradually form a large amount of H after being washed by rainwater and mineral processing water. + , SO 4 2 and some toxic metal elements in the wastewater. This wastewater is l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/24C02F1/28C02F103/10
CPCB01J20/24B01J2220/4875B01J2220/4881C02F1/286C02F2103/10
Inventor 陈毅忠
Owner CHANGZHOU UNIV
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