CN105880271A - Method for repairing mine chrome heavy metal pollution soil - Google Patents

Method for repairing mine chrome heavy metal pollution soil Download PDF

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Publication number
CN105880271A
CN105880271A CN201610508556.0A CN201610508556A CN105880271A CN 105880271 A CN105880271 A CN 105880271A CN 201610508556 A CN201610508556 A CN 201610508556A CN 105880271 A CN105880271 A CN 105880271A
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parts
water
mine
well
soil
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CN105880271B (en
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李康
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Jiangsu Shanshui Ecological Environment Construction Engineering Co., Ltd.
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李康
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/002Reclamation of contaminated soil involving in-situ ground water treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives

Abstract

The invention relates to a method for repairing mine chrome heavy metal pollution soil, and belongs to the technical field of mine environment repair. The method comprises the following steps of: a first step of digging out at least one water injection well and at least one pumping well on the surface of mine soil, and placing a filter bag filled with high-polymer adsorbent particles for adsorbing chrome inside the pumping well; a second step of pressurizing to feed clear water into the water injection well, and simultaneously carrying out negative pressure suction from a head of the pumping well by a pumping plant; a third step of taking out the filter bag after completing suction, washing out surface sediments with water, then carrying out the desorption operation, and feeding desorption solution into a reverse osmosis membrane to carry out concentration processing; a fourth step of placing the filter bag subjected to desorption into the pumping well again, and repeating the operations in the first to third steps until concentration of chrome in the soil is reduced to below regulated concentration. The method for repairing a mine site, which is provided by the invention, has an excellent repair effect on the site suffering from heavy metal chrome pollution.

Description

A kind of restorative procedure of mine chromium heavy-metal contaminated soil
Technical field
The present invention relates to the restorative procedure of a kind of mine chromium heavy-metal contaminated soil, belong to mine environment recovery technique neck Territory.
Background technology
Metal mine be resource intensively, be again natural native water ecological environment polluter.Recovery process runs off Heavy metal Pb, Hg, As, Cd, Cr etc. be soil water ecological environment important murder by poisoning element.Along with the increase in mining time, In the Soil Surrounding environment of mine, heavy metal constantly accumulates, and contamination phenomenon is on the rise.After heavy metal enters soil environment, diffusion is moved Move relatively slow, and be not degraded by microorganisms, by dissolving, precipitate, condensing, complexation, after the process such as absorption, easily form difference Chemical form.When it runs up to a certain degree in soil, it is possible by edaphophyte (crop) system, through food Thing chain is taken in by animal or human body, and potential hazard is very big.Therefore, the heavy metal pollution problem of metal mine soil must draw Rise and pay high attention to, and take corresponding measure to be prevented and treated.
Heavy metal enters after soil, by dissolving, precipitate, condensing, the various reactions such as Absorptive complex wave, forms different chemistry Form, and show different activity, its activity of the morphology influence of heavy metal in soil and the effectiveness to plant.Therefore, The environmental effect of conversion heavy metal between form and the form of research heavy metal in soil and controlling of heavy-metal contaminated soil Reason is repaired significant.According to the heavy metal basic Accumulation Mechanism in soil, often it is divided into 5 kinds to deposit heavy metal in soil In form: (1) exchangeable species;(2) carbonate combined state;(3) iron and manganese oxides combined state;(4) state is organically combined;(5) residual State.In the environmental condition being continually changing, the heavy metal of various forms has different redistribution features.Usually, soil In exchangeable species heavy metal have stronger biological activity, and residual heavy metal is under field conditions (factors), due to soil ore deposit Material has stronger adhesion to be not easy to discharge from soil particle, has relatively low biological activity.
At present, administer both at home and abroad the approach of heavy metal pollution of soil and be summed up that mainly to have 3 kinds: one be to change heavy metal to exist Occurrence status in soil so that it is stable or fixing, reduces its activity so that it is passivation, departs from food chain, to reduce it at environment In animal migration and bioavailability;Two is to utilize various technology to remove removing heavy metals from soil, reaches to reclaim and reduce soil The dual purpose of heavy metal in earth;Three is to utilize various impervious material, such as cement, clay, slabstone, plastic plate etc., and will impurely District and the isolation of uncontaminated area, to reduce or to stop migration and the diffusion of heavy metal.
CN101332466B discloses a kind of method of repairing mine soil and Heavy Metal Pollution in Sludge, heavy metal-polluted The mine soil of dye or mud are planted Crassocephalum crepidioides, utilizes Crassocephalum crepidioides to Cd, Cu, Pb, Zn tetra-enriched character of heavy metal species, inhale The heavy metals such as Cd, Cu, Pb, the Zn in receipts accumulation soil, and its major part is transported to aerial parts, to reach repairing mine soil The purpose of heavy metal pollution in earth.CN100441324C discloses a kind of repairing mine soil and the side of sludge heavy-metal pollution Method, plants Herba Dicranostigmatis Leptopodi in the mine soil or mud of heavy metal pollution.The method utilizes Herba Dicranostigmatis Leptopodi to Cd, Cu, Pb, Zn The enriched character of four heavy metal species, is planted in mine soil and mud, absorption and accumulation Cd, Cu, Pb, Zn, and it is big Part is transported to aerial parts, to reach the purpose of repairing mine soil and Heavy Metal Pollution in Sludge.
But above-mentioned method is bad for the repairing effect having the mine soil of heavy metal chromium pollution.
Summary of the invention
It is an object of the invention to: the restorative procedure in a kind of place, mine with good remediating heavy metal pollution of chromium is provided.
Technical scheme:
The restorative procedure of a kind of mine chromium heavy-metal contaminated soil, comprises the steps:
1st step, excavates out at least a bite water injection well and at least a bite pumped well on mine soil surface, places inside pumped well Filter bag equipped with the polymeric sorbent granule for Adsorption of Chromium;
2nd step, in water injection well, clear water is sent in pressurization, carries out negative pressure-pumping by water plug from the well head that draws water simultaneously;
3rd step, after having aspirated, takes out filter bag, washes surface silt with water, then carry out desorption operations, and stripping liquid is sent into Reverse osmosis membrane concentration;
4th step, filter bag desorbing completed is placed again in pumped well, repeats the 1st~3 steps operations, plays chromium in soil Lowering of concentration is to below normal concentration.
In the 1st described step, the horizontal level distance of water injection well and pumped well should be less than 10m.
The well head diameter of water injection well and pumped well should be at more than 30cm;The degree of depth is at more than 5m.
The 3rd described step, the stripping liquid used by desorption operations is the phosphoric acid solution of 0.5mol/L;Desorption temperature is 30~50 ℃。
The preparation method of described polymeric sorbent granule, comprises the steps:
S1: by weight, weighs konjaku powder 30~50 parts, is dissolved in distilled water 300~400 parts, is stirred into colloidal sol; Adding inorganic base aqueous solution to stir, making sol pH is 9~13;It is warming up at 65~80 DEG C reaction, cools down after terminating Stand, then wash with distilled water immersion, gel is placed in freezing tank freezing, then room temperature is melted, after lyophilizing, obtain macropore evil spirit Taro glucomannan hydrogel;
S2: by weight, after Plant fiber 1~2 parts being pulverized, mixes with inorganic acid solution 5~20 parts, is heated to 75~95 Be hydrolyzed at DEG C reaction, after reaction terminates, filters out residue, cleans residue use water to pH neutral, then by residue, poly-second two Alcohol 0.2~0.4 part, water 5~8 parts of mix homogeneously, be warming up to 80~90 DEG C and react, and obtains white serosity, after spray drying Obtain modified microcrystalline cellulose;
S3: by weight, after 60 parts of macropore glucomannan hydrogel of konnjaku add swelling 12 h of dimethylformamide 5 parts, Add modified microcrystalline cellulose 10 parts, diethylamine 10 parts, Oleum Verniciae fordii 5 parts, 2-acrylamido-2-methyl propane sulfonic acid (AMPS) 10 Part, N-butoxy methyl acrylamide (NBMA) 4 parts, acrylic acid double cyclopentenyl ester (DCPA) 3 parts, K2CO35 parts, the tetrabutyl Ammonium bromide (TBAB) 5 parts, under stirring in oil bath back flow reaction, reaction terminate after product is transferred in sintered filter funnel, After sucking filtration, again with methanol filter wash is drained for 2 times, is dried under vacuum to constant weight, obtains polymeric sorbent granule.
In described S1 step, the mixing of inorganic base one or two kinds of in sodium hydroxide or potassium hydroxide.
In described S2 step, Plant fiber's one in cotton fiber, the wood fiber, bamboo fibre, flaxen fiber or several Plant mixture;Inorganic acid solution is hydrochloric acid, sulphuric acid or phosphoric acid solution, and acid concentration is 0.1~1.0mol/L.
Beneficial effect
The present invention provides the restorative procedure in place, mine to have the effect of good reparation for the place of heavy metal chromium pollution.
Detailed description of the invention
Embodiment 1
1st step, opens on the heavy metal pollution of mine surface containing chromium zinc 34mg/Kg and controls out row's pumped well and row's water injection well, Being parallel to each other between two row's wells, the distance between two row's wells is 5m, and the adjacent distance between pumped well is 9m, adjacent water filling Distance between well is 10m;Pumped well and degree of depth 7m of water injection well;Place inside pumped well equipped with the high score for Adsorption of Chromium The filter bag of sub-absorbent particles;
2nd step, in water injection well, clear water is sent in pressurization, carries out negative pressure-pumping by water plug from the well head that draws water simultaneously;
3rd step, after having aspirated, takes out filter bag, washes surface silt with water, then carry out desorption operations, desorption operations institute Stripping liquid be the phosphoric acid solution of 0.5mol/L;Desorption temperature is 30 DEG C, and stripping liquid sends into reverse osmosis membrane concentration;
4th step, filter bag desorbing completed is placed again in pumped well, repeats the 1st~3 steps and operates 5 times.
The preparation method of described polymeric sorbent granule, comprises the steps:
S1: by weight, weighs konjaku powder 30 parts, is dissolved in distilled water 300 parts, is stirred into colloidal sol;Add 0.5wt% sodium hydrate aqueous solution stirs, and making sol pH is 9;Being warming up at 65 DEG C reaction, after terminating, cooling stands, so Wash with distilled water immersion afterwards, gel is placed in freezing tank freezing, then room temperature is melted, and obtains macropore konjak portuguese gansu polyose after lyophilizing Sucrose solution gel;
S2: by weight, after being pulverized by bamboo fibre 1 part, mixes with 3wt% hydrochloric acid solution 5 parts, and heating carries out water at 75 DEG C Solve reaction, after reaction terminates, filter out residue, residue use water is cleaned to pH neutral, then by residue, Polyethylene Glycol 0.2 part, water 5 parts of mix homogeneously, are warming up to 80 DEG C and react, and obtain white serosity, obtain modified microcrystalline cellulose after spray drying;
S3: by weight, after 60 parts of macropore glucomannan hydrogel of konnjaku add swelling 12 h of dimethylformamide 5 parts, Add modified microcrystalline cellulose 10 parts, diethylamine 10 parts, Oleum Verniciae fordii 5 parts, 2-acrylamido-2-methyl propane sulfonic acid (AMPS) 10 Part, N-butoxy methyl acrylamide (NBMA) 4 parts, acrylic acid double cyclopentenyl ester (DCPA) 3 parts, K2CO35 parts, the tetrabutyl Ammonium bromide (TBAB) 5 parts, under stirring in oil bath back flow reaction, reaction terminate after product is transferred in sintered filter funnel, After sucking filtration, again with methanol filter wash is drained for 2 times, is dried under vacuum to constant weight, obtains polymeric sorbent granule.
Embodiment 2
1st step, opens on the heavy metal pollution of mine surface containing chromium zinc 34mg/Kg and controls out row's pumped well and row's water injection well, Being parallel to each other between two row's wells, the distance between two row's wells is 5m, and the adjacent distance between pumped well is 9m, adjacent water filling Distance between well is 10m;Pumped well and degree of depth 7m of water injection well;Place inside pumped well equipped with the high score for Adsorption of Chromium The filter bag of sub-absorbent particles;
2nd step, in water injection well, clear water is sent in pressurization, carries out negative pressure-pumping by water plug from the well head that draws water simultaneously;
3rd step, after having aspirated, takes out filter bag, washes surface silt with water, then carry out desorption operations, desorption operations institute Stripping liquid be the phosphoric acid solution of 0.5mol/L;Desorption temperature is 50 DEG C, and stripping liquid sends into reverse osmosis membrane concentration;
4th step, filter bag desorbing completed is placed again in pumped well, and filter bag desorbing completed is placed again in pumped well, Repeat the 1st~3 steps to operate 5 times.
The preparation method of described polymeric sorbent granule, comprises the steps:
S1: by weight, weighs konjaku powder 50 parts, is dissolved in distilled water 400 parts, is stirred into colloidal sol;Add 0.5wt% sodium hydrate aqueous solution stirs, and making sol pH is 13;Being warming up at 80 DEG C reaction, after terminating, cooling stands, Then wash with distilled water immersion, gel is placed in freezing tank freezing, then room temperature is melted, and obtains macropore Amorphophallus rivieri glucomannan after lyophilizing Polysaccharide hydrogel;
S2: by weight, after being pulverized by bamboo fibre 2 parts, mixes with 3wt% hydrochloric acid solution 20 parts, and heating carries out water at 95 DEG C Solve reaction, after reaction terminates, filter out residue, residue use water is cleaned to pH neutral, then by residue, Polyethylene Glycol 0.4 part, water 8 parts of mix homogeneously, are warming up to 90 DEG C and react, and obtain white serosity, obtain modified microcrystalline cellulose after spray drying;
S3: by weight, after 60 parts of macropore glucomannan hydrogel of konnjaku add swelling 12 h of dimethylformamide 5 parts, Add modified microcrystalline cellulose 10 parts, diethylamine 10 parts, Oleum Verniciae fordii 5 parts, 2-acrylamido-2-methyl propane sulfonic acid (AMPS) 10 Part, N-butoxy methyl acrylamide (NBMA) 4 parts, acrylic acid double cyclopentenyl ester (DCPA) 3 parts, K2CO35 parts, the tetrabutyl Ammonium bromide (TBAB) 5 parts, under stirring in oil bath back flow reaction, reaction terminate after product is transferred in sintered filter funnel, After sucking filtration, again with methanol filter wash is drained for 2 times, is dried under vacuum to constant weight, obtains polymeric sorbent granule.
Embodiment 3
1st step, opens on the heavy metal pollution of mine surface containing chromium zinc 34mg/Kg and controls out row's pumped well and row's water injection well, Being parallel to each other between two row's wells, the distance between two row's wells is 5m, and the adjacent distance between pumped well is 9m, adjacent water filling Distance between well is 10m;Pumped well and degree of depth 7m of water injection well;Place inside pumped well equipped with the high score for Adsorption of Chromium The filter bag of sub-absorbent particles;
2nd step, in water injection well, clear water is sent in pressurization, carries out negative pressure-pumping by water plug from the well head that draws water simultaneously;
3rd step, after having aspirated, takes out filter bag, washes surface silt with water, then carry out desorption operations, desorption operations institute Stripping liquid be the phosphoric acid solution of 0.5mol/L;Desorption temperature is 40 DEG C, and stripping liquid sends into reverse osmosis membrane concentration;
4th step, filter bag desorbing completed is placed again in pumped well, and filter bag desorbing completed is placed again in pumped well, Repeat the 1st~3 steps to operate 5 times.
The preparation method of described polymeric sorbent granule, comprises the steps:
S1: by weight, weighs konjaku powder 40 parts, is dissolved in distilled water 350 parts, is stirred into colloidal sol;Add 0.5wt% sodium hydrate aqueous solution stirs, and making sol pH is 11;Being warming up at 70 DEG C reaction, after terminating, cooling stands, Then wash with distilled water immersion, gel is placed in freezing tank freezing, then room temperature is melted, and obtains macropore Amorphophallus rivieri glucomannan after lyophilizing Polysaccharide hydrogel;
S2: by weight, after being pulverized by bamboo fibre 2 parts, mixes with 3wt% hydrochloric acid solution 10 parts, and heating carries out water at 85 DEG C Solve reaction, after reaction terminates, filter out residue, residue use water is cleaned to pH neutral, then by residue, Polyethylene Glycol 0.3 part, water 6 parts of mix homogeneously, are warming up to 85 DEG C and react, and obtain white serosity, obtain modified microcrystalline cellulose after spray drying;
S3: by weight, after 60 parts of macropore glucomannan hydrogel of konnjaku add swelling 12 h of dimethylformamide 5 parts, Add modified microcrystalline cellulose 10 parts, diethylamine 10 parts, Oleum Verniciae fordii 5 parts, 2-acrylamido-2-methyl propane sulfonic acid (AMPS) 10 Part, N-butoxy methyl acrylamide (NBMA) 4 parts, acrylic acid double cyclopentenyl ester (DCPA) 3 parts, K2CO35 parts, the tetrabutyl Ammonium bromide (TBAB) 5 parts, under stirring in oil bath back flow reaction, reaction terminate after product is transferred in sintered filter funnel, After sucking filtration, again with methanol filter wash is drained for 2 times, is dried under vacuum to constant weight, obtains polymeric sorbent granule.
Reference examples 1
Difference with embodiment 3 is: microcrystalline Cellulose is without modification.
1st step, opens on the heavy metal pollution of mine surface containing chromium zinc 34mg/Kg and controls out row's pumped well and row's water filling Well, is parallel to each other between two row's wells, and the distance between two row's wells is 5m, and the adjacent distance between pumped well is 9m, adjacent Distance between water injection well is 10m;Pumped well and degree of depth 7m of water injection well;Place inside pumped well equipped with for Adsorption of Chromium The filter bag of polymeric sorbent granule;
2nd step, in water injection well, clear water is sent in pressurization, carries out negative pressure-pumping by water plug from the well head that draws water simultaneously;
3rd step, after having aspirated, takes out filter bag, washes surface silt with water, then carry out desorption operations, desorption operations institute Stripping liquid be the phosphoric acid solution of 0.5mol/L;Desorption temperature is 40 DEG C, and stripping liquid sends into reverse osmosis membrane concentration;
4th step, filter bag desorbing completed is placed again in pumped well, and filter bag desorbing completed is placed again in pumped well, Repeat the 1st~3 steps to operate 5 times.
The preparation method of described polymeric sorbent granule, comprises the steps:
S1: by weight, weighs konjaku powder 40 parts, is dissolved in distilled water 350 parts, is stirred into colloidal sol;Add 0.5wt% sodium hydrate aqueous solution stirs, and making sol pH is 11;Being warming up at 70 DEG C reaction, after terminating, cooling stands, Then wash with distilled water immersion, gel is placed in freezing tank freezing, then room temperature is melted, and obtains macropore Amorphophallus rivieri glucomannan after lyophilizing Polysaccharide hydrogel;
S2: by weight, after being pulverized by bamboo fibre 2 parts, mixes with 3wt% hydrochloric acid solution 10 parts, and heating carries out water at 85 DEG C Solve reaction, after reaction terminates, filter out residue, residue use water is cleaned to pH neutral, then by residue, 6 parts of mix homogeneously of water, rise Temperature, to 85 DEG C, obtains serosity, obtains microcrystalline Cellulose after spray drying;
S3: by weight, after 60 parts of macropore glucomannan hydrogel of konnjaku add swelling 12 h of dimethylformamide 5 parts, Add microcrystalline Cellulose 10 parts, diethylamine 10 parts, Oleum Verniciae fordii 5 parts, 2-acrylamido-2-methyl propane sulfonic acid (AMPS) 10 parts, N-butoxy methyl acrylamide (NBMA) 4 parts, acrylic acid double cyclopentenyl ester (DCPA) 3 parts, K2CO35 parts, tetrabutyl phosphonium bromide Ammonium (TBAB) 5 parts, under stirring in oil bath back flow reaction, reaction terminate after product is transferred in sintered filter funnel, sucking filtration Rear again with methanol filter wash is drained for 2 times, is dried under vacuum to constant weight, obtains polymeric sorbent granule.
Reference examples 2
Difference with embodiment 3 is: do not add Oleum Verniciae fordii in step S3.
1st step, opens on the heavy metal pollution of mine surface containing chromium zinc 34mg/Kg and controls out row's pumped well and row's water filling Well, is parallel to each other between two row's wells, and the distance between two row's wells is 5m, and the adjacent distance between pumped well is 9m, adjacent Distance between water injection well is 10m;Pumped well and degree of depth 7m of water injection well;Place inside pumped well equipped with for Adsorption of Chromium The filter bag of polymeric sorbent granule;
2nd step, in water injection well, clear water is sent in pressurization, carries out negative pressure-pumping by water plug from the well head that draws water simultaneously;
3rd step, after having aspirated, takes out filter bag, washes surface silt with water, then carry out desorption operations, desorption operations institute Stripping liquid be the phosphoric acid solution of 0.5mol/L;Desorption temperature is 40 DEG C, and stripping liquid sends into reverse osmosis membrane concentration;
4th step, filter bag desorbing completed is placed again in pumped well, and filter bag desorbing completed is placed again in pumped well, Repeat the 1st~3 steps to operate 5 times.
The preparation method of described polymeric sorbent granule, comprises the steps:
S1: by weight, weighs konjaku powder 40 parts, is dissolved in distilled water 350 parts, is stirred into colloidal sol;Add 0.5wt% sodium hydrate aqueous solution stirs, and making sol pH is 11;Being warming up at 70 DEG C reaction, after terminating, cooling stands, Then wash with distilled water immersion, gel is placed in freezing tank freezing, then room temperature is melted, and obtains macropore Amorphophallus rivieri glucomannan after lyophilizing Polysaccharide hydrogel;
S2: by weight, after being pulverized by bamboo fibre 2 parts, mixes with 3wt% hydrochloric acid solution 10 parts, and heating carries out water at 85 DEG C Solve reaction, after reaction terminates, filter out residue, residue use water is cleaned to pH neutral, then by residue, Polyethylene Glycol 0.3 part, water 6 parts of mix homogeneously, are warming up to 85 DEG C and react, and obtain white serosity, obtain modified microcrystalline cellulose after spray drying;
S3: by weight, after 60 parts of macropore glucomannan hydrogel of konnjaku add swelling 12 h of dimethylformamide 5 parts, Add modified microcrystalline cellulose 10 parts, diethylamine 10 parts, 2-acrylamido-2-methyl propane sulfonic acid (AMPS) 10 parts, N-fourth Epoxide Methacrylamide (NBMA) 4 parts, acrylic acid double cyclopentenyl ester (DCPA) 3 parts, K2CO35 parts, tetrabutyl ammonium bromide (TBAB) 5 parts, under stirring in oil bath back flow reaction, reaction terminate after product is transferred in sintered filter funnel, after sucking filtration Again with methanol filter wash is drained for 2 times, is dried under vacuum to constant weight, obtains polymeric sorbent granule.
After above example 1~3, reference examples 1 and reference examples 2 carry out testing 1-5 time, measure the chromium content of beary metal in soil, As shown in the table.
Chromium content of beary metal (mg/Kg)
After 1st time After 2nd time After 3rd time After the 4th After the 5th
Embodiment 1 28 21 12 9 5
Embodiment 2 29 20 13 8 6
Embodiment 3 26 17 10 6 3
Reference examples 1 31 22 15 12 9
Reference examples 2 30 23 16 11 9
As can be seen from the above table, the pollution of chromium method that the present invention provides has preferably removes the effect that heavy metal in soil pollutes Really, after 5 adsorption operations, it is possible to make the chromium content of beary metal in soil drop to below 6mg/Kg;Embodiment 3 is relative In reference examples 1, microcrystalline Cellulose is carried out modification, improve the adsorption effect of chromium;Embodiment 3 for reference examples 2, When preparing adsorbing material, make Oleum Verniciae fordii and monomer carry out polyreaction, make the adsorbance of adsorbing material be improved.

Claims (7)

1. the restorative procedure of a mine chromium heavy-metal contaminated soil, it is characterised in that comprise the steps:
1st step, excavates out at least a bite water injection well and at least a bite pumped well on mine soil surface, places inside pumped well Filter bag equipped with the polymeric sorbent granule for Adsorption of Chromium;
2nd step, in water injection well, clear water is sent in pressurization, carries out negative pressure-pumping by water plug from the well head that draws water simultaneously;
3rd step, after having aspirated, takes out filter bag, washes surface silt with water, then carry out desorption operations, and stripping liquid is sent into Reverse osmosis membrane concentration;
4th step, filter bag desorbing completed is placed again in pumped well, repeats the 1st~3 steps operations, plays chromium in soil Lowering of concentration is to below normal concentration.
The restorative procedure of mine the most according to claim 1 chromium heavy-metal contaminated soil, it is characterised in that described the 1st In step, the horizontal level distance of water injection well and pumped well should be less than 10m.
The restorative procedure of mine the most according to claim 1 chromium heavy-metal contaminated soil, it is characterised in that water injection well and taking out The well head diameter of well should be at more than 30cm;The degree of depth is at more than 5m.
The restorative procedure of mine the most according to claim 1 chromium heavy-metal contaminated soil, it is characterised in that described the 3rd Step, the stripping liquid used by desorption operations is the phosphoric acid solution of 0.5mol/L;Desorption temperature is 30~50 DEG C.
The restorative procedure of mine the most according to claim 1 chromium heavy-metal contaminated soil, it is characterised in that described high score The preparation method of sub-absorbent particles, comprises the steps: S1: by weight, weighs konjaku powder 30~50 parts, is dissolved in steaming In distilled water 300~400 parts, it is stirred into colloidal sol;Adding inorganic base aqueous solution to stir, making sol pH is 9~13; Being warming up at 65~80 DEG C reaction, after terminating, cooling stands, and then washs with distilled water immersion, is placed in by gel in freezing tank cold Freeze, then room temperature is melted, and obtains macropore glucomannan hydrogel of konnjaku after lyophilizing;S2: by weight, by Plant fiber 1~2 parts After pulverizing, mixing with inorganic acid solution 5~20 parts, be heated at 75~95 DEG C being hydrolyzed reaction, after reaction terminates, filters out Residue, cleans to pH neutral by residue use water, then by residue, Polyethylene Glycol 0.2~0.4 part, water 5~8 parts of mix homogeneously, heats up React to 80~90 DEG C, obtain white serosity, after spray drying, obtain modified microcrystalline cellulose;S3: by weight, After 60 parts of macropore glucomannan hydrogel of konnjaku add swelling 12 h of dimethylformamide 5 parts, add modified microcrystalline cellulose 10 Part, diethylamine 10 parts, Oleum Verniciae fordii 5 parts, 2-acrylamido-2-methyl propane sulfonic acid (AMPS) 10 parts, N-butoxymethyl propylene Amide (NBMA) 4 parts, acrylic acid double cyclopentenyl ester (DCPA) 3 parts, K2CO35 parts, tetrabutyl ammonium bromide (TBAB) 5 parts, stir Mixing down back flow reaction in oil bath, product is transferred in sintered filter funnel after terminating by reaction, again with methanol filter wash 2 after sucking filtration All over draining, it is dried under vacuum to constant weight, obtains polymeric sorbent granule.
The restorative procedure of mine the most according to claim 5 chromium heavy-metal contaminated soil, it is characterised in that described S1 In step, the mixing of inorganic base one or two kinds of in sodium hydroxide or potassium hydroxide.
The restorative procedure of mine the most according to claim 5 chromium heavy-metal contaminated soil, it is characterised in that described S2 In step, Plant fiber's one or several mixture in cotton fiber, the wood fiber, bamboo fibre, flaxen fiber;Inorganic acid solution For hydrochloric acid, sulphuric acid or phosphoric acid solution, acid concentration is 0.1~1.0mol/L.
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Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1168899A (en) * 1996-03-08 1997-12-31 尤尼蒂卡株式会社 Polyester resin aqueous dispersion and process for preparing the same
CN1243761A (en) * 1998-07-30 2000-02-09 武汉大学 Process for preparing porous filler of regenerated cellulose for gel permeation chromatographic column
CN1687194A (en) * 2005-04-05 2005-10-26 武汉大学 Glucomannan hydrogel of konnjaku and preparation method
WO2009022726A1 (en) * 2007-08-16 2009-02-19 Central Research Institute Of Electric Power Industry Dehydration system and dehydration process for water-containing substances
CN101879521A (en) * 2010-06-11 2010-11-10 中国地质大学(北京) Method for remedying arsenic polluted soil
CN101947539A (en) * 2010-08-06 2011-01-19 浙江博世华环保科技有限公司 Soil remediation method for treating heavy metal pollutants
KR20110130857A (en) * 2010-05-28 2011-12-06 정종문 Functional composition having anti-oxidative function, anti-allergic, improvement and prevention effect of atopic dermatitis, and method for manufacturing the same, and a healthful food having the same
CN102319729A (en) * 2011-07-30 2012-01-18 台州职业技术学院 New method for combined remediation of compound contaminated soil
CN102583712A (en) * 2012-02-21 2012-07-18 清华大学 Method and system by using micro-nano bubbles to perform reinforcement in-situ remediation on polluted ground water
CN202576032U (en) * 2012-05-15 2012-12-05 天津邦盛净化设备有限公司 Oily wastewater absorption treatment and cyclic regeneration system
CN102992508A (en) * 2011-09-15 2013-03-27 江苏常环环境科技有限公司 Volatile organic compound contaminated groundwater restoration method
CN103396806A (en) * 2013-08-02 2013-11-20 重庆远传环保科技有限公司 Agent and method used for remedying heavy metal polluted soil
CN103755042A (en) * 2014-02-13 2014-04-30 长江水利委员会长江科学院 Preparation method and application of attapulgite/nano-iron composite material-microorganism coupled body
CN103934264A (en) * 2014-03-18 2014-07-23 北京国环建邦环保科技有限公司 In-situ reduction restoration method for chromium contaminated soil
CN104031650A (en) * 2014-06-09 2014-09-10 爱土工程环境科技有限公司 Efficient solidifying and stabilizing repair agent aiming at heavy metal contaminated soil
CN104140153A (en) * 2013-05-08 2014-11-12 赵学民 Device for remediating rocks environmental pollution by nanotechnology and application thereof
CN104475440A (en) * 2014-12-04 2015-04-01 唐山柯林环保科技有限公司 In-situ remediation method of chromium pollution site and special water treatment equipment
CN204247683U (en) * 2014-12-04 2015-04-08 唐山柯林环保科技有限公司 A kind of pollution of chromium place in-situ immobilization dedicated water treating apparatus
CN104596951A (en) * 2013-10-31 2015-05-06 大连大公环境检测有限公司 Method for detecting heavy metal residues in solvent
CN105013810A (en) * 2014-04-16 2015-11-04 永清环保股份有限公司 Chromium-contaminated soil remediation medicament and remediation method

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1168899A (en) * 1996-03-08 1997-12-31 尤尼蒂卡株式会社 Polyester resin aqueous dispersion and process for preparing the same
CN1243761A (en) * 1998-07-30 2000-02-09 武汉大学 Process for preparing porous filler of regenerated cellulose for gel permeation chromatographic column
CN1687194A (en) * 2005-04-05 2005-10-26 武汉大学 Glucomannan hydrogel of konnjaku and preparation method
WO2009022726A1 (en) * 2007-08-16 2009-02-19 Central Research Institute Of Electric Power Industry Dehydration system and dehydration process for water-containing substances
KR20110130857A (en) * 2010-05-28 2011-12-06 정종문 Functional composition having anti-oxidative function, anti-allergic, improvement and prevention effect of atopic dermatitis, and method for manufacturing the same, and a healthful food having the same
CN101879521A (en) * 2010-06-11 2010-11-10 中国地质大学(北京) Method for remedying arsenic polluted soil
CN101947539A (en) * 2010-08-06 2011-01-19 浙江博世华环保科技有限公司 Soil remediation method for treating heavy metal pollutants
CN102319729A (en) * 2011-07-30 2012-01-18 台州职业技术学院 New method for combined remediation of compound contaminated soil
CN102992508A (en) * 2011-09-15 2013-03-27 江苏常环环境科技有限公司 Volatile organic compound contaminated groundwater restoration method
CN102583712A (en) * 2012-02-21 2012-07-18 清华大学 Method and system by using micro-nano bubbles to perform reinforcement in-situ remediation on polluted ground water
CN202576032U (en) * 2012-05-15 2012-12-05 天津邦盛净化设备有限公司 Oily wastewater absorption treatment and cyclic regeneration system
CN104140153A (en) * 2013-05-08 2014-11-12 赵学民 Device for remediating rocks environmental pollution by nanotechnology and application thereof
CN103396806A (en) * 2013-08-02 2013-11-20 重庆远传环保科技有限公司 Agent and method used for remedying heavy metal polluted soil
CN104596951A (en) * 2013-10-31 2015-05-06 大连大公环境检测有限公司 Method for detecting heavy metal residues in solvent
CN103755042A (en) * 2014-02-13 2014-04-30 长江水利委员会长江科学院 Preparation method and application of attapulgite/nano-iron composite material-microorganism coupled body
CN103934264A (en) * 2014-03-18 2014-07-23 北京国环建邦环保科技有限公司 In-situ reduction restoration method for chromium contaminated soil
CN105013810A (en) * 2014-04-16 2015-11-04 永清环保股份有限公司 Chromium-contaminated soil remediation medicament and remediation method
CN104031650A (en) * 2014-06-09 2014-09-10 爱土工程环境科技有限公司 Efficient solidifying and stabilizing repair agent aiming at heavy metal contaminated soil
CN104475440A (en) * 2014-12-04 2015-04-01 唐山柯林环保科技有限公司 In-situ remediation method of chromium pollution site and special water treatment equipment
CN204247683U (en) * 2014-12-04 2015-04-08 唐山柯林环保科技有限公司 A kind of pollution of chromium place in-situ immobilization dedicated water treating apparatus

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