CN102923864A - Method and device for lowering heavy metal content in water - Google Patents
Method and device for lowering heavy metal content in water Download PDFInfo
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- CN102923864A CN102923864A CN2012104489821A CN201210448982A CN102923864A CN 102923864 A CN102923864 A CN 102923864A CN 2012104489821 A CN2012104489821 A CN 2012104489821A CN 201210448982 A CN201210448982 A CN 201210448982A CN 102923864 A CN102923864 A CN 102923864A
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Abstract
The invention discloses a method for lowering heavy metal content in water. According to the method, bolete powder is used as adsorbent, and through mixed contact, vibration adsorption, filtration separation and other steps, the heavy metal content in rivers, lakes, industrial sewage and other water base mediums can be effectively lowered. The method is simple in operation, high in clearing efficiency and capable of effectively recovering heavy metals.
Description
Technical field
The present invention relates to heavy metal recycling field, relate in particular to heavy metal recovery and treatment method in the aqueous medium.
Background technology
Along with the impact of industrial expansion and mankind's activity, the situation of heavy metal contamination becomes increasingly serious.The environmental pollution that the heavy metals such as copper, zinc, cadmium, chromium, lead cause has become global problem, and is wherein particularly serious to the pollution of water.To the processing of heavy metal contamination, extensively adopt the coagulation sedimentation method as the removal means of heavy metal at present.Although the method is cheap, produced the mud that contains in a large number the high density heavy metal, and these mud must be processed in the field final the processing, deal with improperly also and might cause secondary pollution to soil.Also can adopt ion exchange method to process, but its cost is high, is not suitable for large-scale application, therefore uses limited.
The heavy metal-polluted dyeing technique of biological restoration is as rapid rising in recent years and study more a kind of method, have advantages of be easy to implement, less investment and little to environmental perturbation.Bolete itself has the ability of very strong accumulation heavy metal as a kind of Applying Ectomycorrhizal Fungi.Scholars begin to propose to utilize bolete to the high accumulation ability of heavy metal, and the bolete mycelium that is fit to the zone of pollution growth is inoculated in the heavy metal hyperaccumulative plant, and the cogeneration system that utilizes bolete and plant to form carries out the heavy-metal contaminated soil reparation.But the method is mainly used in soil remediation, can't effectively repair contaminated aqueous medium.In addition, also there are some that the bolete mycelium is carried out isolated culture, and by its adsorption to heavy metal, remove the heavy metal in the water.The method need to be carried out the isolated culture of long period to obtain enough mycelium, also has complicated operation, and cost is high, the problems such as length consuming time.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of bolete counterweight metal biosorption that utilizes to be used for effectively reducing the method for heavy metal content in the water, the method is simple to operate, and elimination efficiency is high, can the efficient recovery heavy metal.
The object of the invention realizes by following technical proposals: adopt the bolete powder as sorbent material, its concrete steps are as follows:
(1) mixes: the bolete powder is mixed with the sewage that contains heavy metal;
(2) concussion absorption: mixture is placed at concussion absorption on the oscillator,
(3) filter: the solution filter after will adsorbing.
As optimal way, the add-on scope of described sorbent material is 0.4 ~ 20 g/L for absorbent concentration after adding.Can also select the bolete of different sorts and different sites as sorbent material according to the difference that is adsorbed metal, improve adsorption effect.
As optimal way, the time range of described concussion absorption is 5 ~ 120 minutes.
As optimal way, described absorbent concentration is 4 g/L, and the concussion adsorption time is 20 minutes.
As optimal way, can also be according to the kind of the metal ion of required removal and starting point concentration different, adjust the consumption of sorbent material, to reach the optimal adsorption effect.
As optimal way, the difference of the metal ion that can also remove as required, the pH value to sewage in adsorption process is adjusted, to reach maximal absorptive capacity.
As optimal way, can also repeat as required described above-mentioned steps more than twice, until heavy metal content is up to standard.
The present invention also provides a kind of device for reducing heavy metal content in the water, and as shown in Figure 9, this device has the advantages such as equipment is simple, with low cost, easy to operate, can effectively reduce heavy metal content in the water.
This device comprises a water inlet pipe 7, a rising pipe 8, two ends are with the hollow cylinder 1 of outside screw 5 about in the of one, and up and down two circular lid 2 that cooperate with described hollow cylinder 1, described lid center has one for the hollow bumps 3 that links to each other with water pipe, the lid of top links to each other with water inlet pipe 7 by projection 3, the lid of below links to each other with rising pipe 8 by projection 3, also has the internal thread 6 that matches with outside screw 5 on the described lid, hollow cylinder 1 is threaded connection rear formation cavity 9 with two lids 2 up and down, it is characterized in that: filter screen 4 is equipped with in the bottom of described cavity 9, is filled with the bolete powder in the cavity 9 as sorbent material.The sewage that will contain heavy metal during use adds from water-in, and sewage from top to bottom flows, and contacts with sorbent material, and heavy metal ion is adsorbed agent absorption, then separates with sorbent material through filter membrane, discharges the lower water of heavy metal content from rising pipe.
As optimal way, at water inlet pipe 7 valve is set, be used for control discharge.
As optimal way, plural said apparatus can also be connected, make finally that concentration of heavy metal ion reaches emission standard from the water that water outlet is discharged, realize the purpose of removal heavy metal.
The method of calculation of adsorptive capacity and adsorption rate among the present invention:
Q=(
C i –
C f )
V/
M Formula 1
E=(
C i –
C f )/C
i * 100% formula 2
Q-unit mass bolete bacterium powder (dry weight) is to metal biosorption amount (mg/g);
E-Metal biosorption rate (%);
CiGOLD FROM PLATING SOLUTION belongs to the starting point concentration (mg/L) of ion before the-absorption;
CfGOLD FROM PLATING SOLUTION belongs to the equilibrium concentration (mg/L) of ion after the-absorption;
VThe volume of-solution (mL);
MThe dry weight (mg) of-bolete bacterium powder.
Beneficial effect of the present invention:
1, the present invention adopts and does not have the bolete powder of vitality as sorbent material, only need bolete is carried out simple pulverization process, also can select wild edible bolete commodity to add the discarded part in man-hour, do not need bolete is planted or isolated culture, sorbent material easily prepares, and cost is low, abundant raw material, simple to operate, consuming time short.
2, the present invention adopts bolete as sorbent material, has very high adsorption efficiency, can select the bolete of different sorts and different sites as sorbent material according to the difference that is adsorbed metal, improves adsorption effect
3, use the method for the invention applied widely, can effectively reduce the heavy metal content in rivers and creeks, lake, the trade effluent etc.
4, the size of the device of heavy metal content flexible design as required in the reduction water of the present invention is to adapt to different treatment capacities.
5, in the reduction water of the present invention in the device of heavy metal content, hollow cylinder 1 adopts to be threaded up and down and cooperates with lid, convenient disassembly, especially when plant bulk is larger, can be easily to wherein sorbent material and filter screen change, the processing such as cleaning.
6, sorbent material of the present invention can also be at CaCl after use
2, HNO
3, MgCl
2, H
2SO
4, HCl, Na
2CO
3, NaHCO
3, NH
4Carry out desorb under the effect of the strippants such as Cl, heavy metal is reclaimed, sorbent material can reuse, also can be as farm crop fertilizer after parsing after repeatedly using.Cost is more saved, and environment friendly is good.
Description of drawings
Fig. 1 is that the bolete powder at different sorts and position is to the adsorptive capacity schematic diagram of lead.
Fig. 2 is that the bolete powder at different sorts and position is to the adsorptive capacity schematic diagram of cadmium.
Fig. 3 is that the bolete powder of different concns is to the schematic diagram of adsorptive capacity and the adsorption rate of lead.
Fig. 4 is that the bolete powder of different concns is to the schematic diagram of adsorptive capacity and the adsorption rate of cadmium.
Fig. 5 be under the different adsorption times bolete powder to cadmium and plumbous adsorptive capacity and the schematic diagram of adsorption rate.
Fig. 6 be under the different metal ion starting point concentration bolete powder to the schematic diagram of adsorptive capacity and the adsorption rate of lead.
Fig. 7 be under the different metal ion starting point concentration bolete powder to the schematic diagram of adsorptive capacity and the adsorption rate of cadmium.
Fig. 8 be under the different pH conditions bolete powder to cadmium and plumbous adsorptive capacity and the schematic diagram of adsorption rate.
Fig. 9 is the schematic diagram of adsorption unit of the present invention, and wherein 1 is hollow cylinder, and 2 is circular lid, and 3 is hollow bumps, and 4 is filter screen, and 5 is outside screw, and 6 is internal thread, and 7 is water inlet pipe, and 8 is rising pipe, and 9 is cavity.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The lead of each concentration or cadmium solution are formulated by the lead of 1000 mg/L or the dilution of cadmium standardized solution among the following embodiment, and the pH value of metallic solution is with the H of 5 mol/L, 0.5 mol/L
2SO
4The NaOH solution of solution and 5 mol/L, 0.5 mol/L is regulated, and the pH meter is measured the pH value of solution value by standardized solution after pH value 4 and 7 times calibrations.
Get the clean tool plug triangular flask of 2 250 mL, adding respectively lead solution and the 25 mL concentration that 25 mL concentration are 100 mg/L is the cadmium solution of 100 mg/L, in two triangular flasks, respectively add the black suede lid of 500 mg bolete powder, after shaking up gently, above-mentioned 2 triangular flasks are placed at room temperature adsorbed on the isothermal vibration machine 1 hour.With solution filter, measure the concentration of remaining heavy metal ion in the filtrate with atomic absorption spectrophotometer after the absorption
C f , mensuration is prepared the starting point concentration of metal ion in plumbous and the cadmium solution simultaneously
C i And the adsorption rate that adopts formula 2 to calculate separately.
The result shows: black suede lid bolete powder is respectively 86% and 54% to the adsorption rate of plumbous and cadmium.
Design is also made adsorption unit of the present invention, comprise a water inlet pipe 7, a rising pipe 8, two ends are with the hollow cylinder 1 of outside screw 5, and up and down two circular lid 2 that cooperate with described hollow cylinder 1, described lid 2 centers have one for the hollow bumps 3 that links to each other with water pipe, the lid of top links to each other with water inlet pipe 7 by projection 3, the lid of below links to each other with rising pipe 8 by projection 3, also has the internal thread 6 that matches with outside screw 5 on the described lid, hollow cylinder 1 is threaded connection rear formation cavity 9 with two lids 2 up and down, filter screen 4 is equipped with in the bottom of described cavity 9, its external diameter that is designed and sized to hollow cylinder 1 is that 5 cm internal diameters are 4 cm as sorbent material to fill up black suede lid bolete powder in the cavity 9, length is 20 cm, the external diameter of hollow bumps 3 is 1 cm, internal diameter is 0.5 cm, and three cover adsorption units are connected in series.
Get cadmium solution that lead solution that concentration is 100 mg/L and concentration is 100 mg/L and carry out equal-volume and mix, as metallic sewage.Above-mentioned sewage is injected adsorption units from water inlet pipe 7, and flow control slowly flows into sewage about 10 mL/min, and with cavity 9 in the sorbent material of filling fully contact.Collect on a small quantity the filtrate of flowing out from the rising pipe 8 of each cover adsorption unit, measure respectively the concentration of remaining lead and cadmium in the filtrate with atomic absorption spectrophotometer.
As calculated, residual concentration plumbous and cadmium is respectively 30% and 40% of starting point concentration after the first set adsorption unit filters, as calculated, residual concentration plumbous and cadmium is respectively 12% and 27% of starting point concentration after the second cover adsorption unit filters again, and residual concentration plumbous and cadmium is respectively 5% and 13% of starting point concentration after the 3rd cover adsorption unit filters again.
Choose black suede lid bolete, King Boletus and three kinds of boletes of light brown suede lid bolete, clean with deionized water respectively; Respectively cap, three parts of tube and stem of three kinds of boletes are separated; Place thermostatic drying chamber, under 50 ± 2 ℃, dry to constant weight; Place respectively pulverizer to pulverize each several part after cooling, be made into the bacterium powder of corresponding drying; Respectively gained bacterium powder is sieved with 120 order sub-sieves and obtain absorbent powder (totally 9 kinds).
Get the clean tool plug triangular flask of 9 250 mL, the lead solution that 25mL concentration is 100 mg/L (the plumbous standardized solution GSB 04-1742-2004 dilution of 1000 mg/L that provided by national non-ferrous metal and electronic material Institute of Analysis 10 times obtain) is provided for each, respectively take by weighing 500 mg bolete powder and join (every bottle of a kind of bolete powder of correspondence in the triangular flask, and carry out mark), other gets the clean tool plug triangular flask of 9 250 mL, the cadmium solution that 25 mL concentration are 100 mg/L (the cadmium standardized solution GSB 04-1721-2004 dilution of 1000 mg/L that provided by national non-ferrous metal and electronic material Institute of Analysis 10 times obtain) is provided for each, respectively take by weighing 500 mg bolete powder and join (every bottle of a kind of bolete powder of correspondence in the triangular flask, and carry out mark), after shaking up gently, above-mentioned 18 triangular flasks are placed at room temperature adsorbed on the isothermal vibration machine 1 hour, each is processed and all establishes three repetitions.
With solution filter, measure the concentration of remaining heavy metal ion in the filtrate with atomic absorption spectrophotometer after the absorption
C f , mensuration is prepared the starting point concentration of metal ion in plumbous and the cadmium solution simultaneously
C i And the adsorptive capacity and the adsorption rate that adopt formula 1 and formula 2 to calculate separately.
The result is as depicted in figs. 1 and 2: different bolete kinds and position have certain otherness to the adsorptive capacity of modest and amiable cadmium, all are that the cap of black suede lid bolete has maximum adsorptive capacity and adsorption rate for these two kinds of metals.In actual use, can also according to the difference of the heavy metal of required absorption, in different ratios above-mentioned 9 kinds of bolete powder be mixed, to reach the optimal adsorption effect.
The impact of embodiment 4 absorbent concentrations
Get the clean tool plug triangular flask of 13 250 mL, the lead solution that 25mL concentration is 10 mg/L (the plumbous standardized solution GSB 04-1742-2004 dilution of 1000 mg/L that provided by national non-ferrous metal and electronic material Institute of Analysis 100 times obtain) is provided for each, adds respectively 10 again, 20,30,40,50,60,80,100,150,200, the black suede lid of 300,400,500 mg bolete powder, be that absorbent concentration is respectively 0.4,0.8,1.2,1.6,2.0,2.4,3.2,4.0,6.0,8.0,12.0,16.0,20.0 g/L shakes up gently to be placed on and at room temperature adsorbed on the isothermal vibration machine 1 hour.
With solution filter, measure the concentration of remaining heavy metal ion in the filtrate with atomic absorption spectrophotometer after the absorption
C f , mensuration is prepared the starting point concentration of metal ion in plumbous and the cadmium solution simultaneously
C i Three repetitions are established in each processing.The adsorptive capacity and the adsorption rate that adopt formula 1 and formula 2 to calculate separately.
Other processing of cadmium solution that lead solution in the above-mentioned processing changed into 10 mg/L are identical.
The result is as shown in Figure 3 and Figure 4: absorbent concentration is different on the impact of different metal, and for plumbous, sorbent material just can reach higher adsorption rate (approximately 80%) and keeps stablizing in very low concentration (0.4 g/L), shows higher adsorption efficiency; And for cadmium, adsorption rate raises with absorbent concentration and increases gradually, and is increased to 4 g/L at absorbent concentration and tends towards stability gradually.
The impact of 5 sorbent material times of embodiment
Get the clean tool plug triangular flask of 11 250 mL, the lead solution that 25 mL concentration are 10 mg/L (the plumbous standardized solution GSB 04-1742-2004 dilution of 1000 mg/L that provided by national non-ferrous metal and electronic material Institute of Analysis 100 times obtain) is provided for each, adds the black suede lid of 100 mg bolete powder again, shake up gently to be placed on the isothermal vibration machine and at room temperature adsorb respectively 5,10,15,20,30,45,60,75,90,105,120 minutes.
With solution filter, measure the concentration of remaining heavy metal ion in the filtrate with atomic absorption spectrophotometer after the absorption
C f , mensuration is prepared the starting point concentration of metal ion in plumbous and the cadmium solution simultaneously
C i Three repetitions are established in each processing.The adsorptive capacity and the adsorption rate that adopt formula 1 and formula 2 to calculate separately.
Other processing of cadmium solution that lead solution in the above-mentioned processing changed into 10 mg/L are identical.
The result as shown in Figure 5, the absorption-time curve of two kinds of metals is similar, adsorption rate and adsorptive capacity all be the initial stage that contacts raise rapidly and very fast (about 20 minutes time) stable, adsorptive capacity reaches capacity.
The impact of embodiment 6 concentration of heavy metal ion
The preparing metal ionic concn is respectively 2,4, and 6,8,10,12, the lead of 16,20 mg/L and cadmium solution.Get respectively the lead of above-mentioned each the heavy metal concentration gradient for preparing and cadmium solution 25 mL in the clean tool plug triangular flask of 250 mL, take by weighing again the black suede lid of 100 mg bolete bacterium powder and add respectively in each bottle as sorbent material, adsorb 1 h as for concussion on the isothermal vibration machine after shaking up gently.
With solution filter, measure the concentration of remaining heavy metal ion in the filtrate with atomic absorption spectrophotometer after the absorption
Cf, measure simultaneously the starting point concentration of metal ion in the lead of each concentration gradient and the cadmium solution
CiEach is processed and all establishes three repetitions.
The result as shown in Figure 6 and Figure 7, in the situation that bolete bacterium powder concentration is constant, starting point concentration rising along with lead, its adsorptive capacity and adsorption rate all keep the significantly trend of rising, illustrate that bolete still has stronger adsorptive power under the lead ring border of high density, but according to the variation of adsorption rate as can be known the adsorptive capacity of heavy metal ion can infinitely not increase along with the increase of concentration of heavy metal ion, because when bolete bacterium powder dosage is constant, the metal biosorption sites on cell walls surface is constant, increase along with adsorptive capacity, the adsorption site of cell surface is tending towards saturated, until reach maximal absorptive capacity; For cadmium, along with the starting point concentration rising of cadmium, its adsorptive capacity keeps the significantly trend of rising, and adsorption rate presents downtrending behind 8 mg/L, the starting point concentration of cadmium ion is described above behind 8 mg/L, and the cadmium adsorption site on the bolete is near saturated.Therefore, in actual applications can be according to the kind of the metal ion of required removal and starting point concentration different, adjust the consumption of sorbent material, to reach the optimal adsorption effect.
The impact of embodiment 7 pH values
Get standardized solution 1 mL of cadmium, move into successively in the clean volumetric flask of 5 100 mL, add separately the deionized water constant volume to 100 mL, be mixed with the heavy metal solution of 10 mg/L, and regulate respectively pH value to 3,4,5,6,7.Because plumbous solution begins to occur precipitation during pH value 6.2 in process for preparation, the gradient of therefore setting the pH value is 2,3,4,5,6, the same cadmium of compound method.Get respectively each 25 mL of solution of the above-mentioned lead for preparing and cadmium in the clean tool plug triangular flask of 250 mL, take by weighing again the black suede lid of 100 mg bolete bacterium powder and add respectively in each bottle as sorbent material, after shaking up gently as for adsorbing 1 h on the isothermal vibration machine.
With solution filter, measure the concentration of remaining heavy metal ion in the filtrate with atomic absorption spectrophotometer after the absorption
C f , measure simultaneously the starting point concentration of metal ion in the lead of each pH value and the cadmium solution
C i Each is processed and all establishes three repetitions.
The result as shown in Figure 8, in the entire scope of pH value 2-7, bolete is stronger than cadmium to the adsorptive power of lead.The easier Adsorption of Heavy Metals of bolete is plumbous under the strong environment of acidity, and it is better in the effect that approaches bolete absorption cadmium under the neutral environment, the difference of the metal ion that therefore can remove is as required in actual applications adjusted the pH value of solution to reach maximal absorptive capacity.
Embodiment 8The desorption test
Get among the embodiment 5 and filter the two kinds of bolete filter residues (respectively adsorptive capacity cadmium and lead) that obtain after 1 hour through concussion absorption, joining respectively 10 mL concentration is in the HCl strippant solution of 0.1 mol/L, concussion desorb 4 hours, measure respectively cadmium and plumbous mass concentration in the solution with Atomic Absorption Spectroscopy AAS, adopt formula 3 to calculate desorption efficiency.
D=QM/C
1V
1Formula 3
D-resolution factor;
Q-unit mass bolete bacterium powder (dry weight) is to metal biosorption amount (mg/g);
MThe dry weight (mg) of the bolete bacterium powder that adds during-absorption;
C
1GOLD FROM PLATING SOLUTION belongs to the mass concentration of ion after the-desorption;
V
1-strippant volume.
The result shows that cadmium and plumbous desorption efficiency are respectively 80% and 85%, illustrate that these bolete powder can reuse by desorption.
Getting the bolete powder 1g that finishes among the embodiment 2 after the absorption joins in the HCl strippant solution that 100 mL concentration are 0.1 mol/L, concussion desorb 4 hours, measure respectively cadmium and plumbous mass concentration in the solution with Atomic Absorption Spectroscopy AAS, adopt formula 3 to calculate desorption efficiency.
The result shows that cadmium and plumbous desorption efficiency are respectively 85% and 88%, illustrate that these bolete powder also can reuse by desorption.
Claims (9)
1. method that reduces heavy metal content in the water, it is characterized in that: as sorbent material, concrete steps are as follows with the bolete powder:
(1) mixes: sorbent material is mixed with the medium that contains heavy metal;
(2) absorption: sorbent material is fully contacted with the medium that contains heavy metal, adsorb;
(3) filtering separation: separate with solution by the sorbent material that will filter after adsorbing.
2. the method for heavy metal content in the reduction water as claimed in claim 1, it is characterized in that: described heavy metal is lead or cadmium.
3. the method for heavy metal content in the reduction water as claimed in claim 1 is characterized in that: the add-on scope of described sorbent material is 0.4 ~ 20 g/L for absorbent concentration after adding.
4. the method for heavy metal content in the reduction water as claimed in claim 1, it is characterized in that: the time range of described absorption is 5 ~ 120 minutes.
5. such as the method for heavy metal content in the described reduction water of any one among the claim 1-4, it is characterized in that: described absorbent concentration is 4 g/L, and adsorption time is 20 minutes.
6. such as the method for heavy metal content in the described reduction water of any one among the claim 1-4, it is characterized in that: repeating said steps is more than twice, until heavy metal content is up to standard.
7. the method for heavy metal content in the reduction water as claimed in claim 5, it is characterized in that: repeating said steps is more than twice, until heavy metal content is up to standard.
8. device for reducing heavy metal content in the water, comprise a water inlet pipe (7), a rising pipe (8), two ends are with the hollow cylinder (1) of outside screw (5) about in the of one, and up and down two circular lid (2) that cooperate with described hollow cylinder (1), described lid 2 centers have one for the hollow bumps (3) that links to each other with water pipe, the lid of top links to each other with water inlet pipe (7) by projection (3), the lid of below links to each other with rising pipe (8) by projection (3), also has the internal thread (6) that matches with outside screw (5) on the described lid, hollow cylinder (1) is threaded connection rear formation cavity (9) with two lids (2) up and down, it is characterized in that: filter screen (4) is equipped with in the bottom of described cavity (9), is filled with the bolete powder as sorbent material in the cavity (9).
9. device as claimed in claim 8, it is characterized in that: described device is in series by the described device of plural claim 8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816716A (en) * | 2014-03-12 | 2014-05-28 | 河北工业大学 | Water treatment core component and water treatment device |
| CN110526421A (en) * | 2019-09-10 | 2019-12-03 | 中交铁道设计研究总院有限公司 | A method of heavy metal ions in sewage is removed using Gordonia bronchialis is hooked |
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| US4732681A (en) * | 1985-05-02 | 1988-03-22 | Ramot University Authority For Applied Research And Industrial Development Ltd. | Removal of contaminants |
| CN2090375U (en) * | 1990-12-12 | 1991-12-11 | 上海海鹰科学技术研究所 | Water purifier |
| CN101284700A (en) * | 2008-04-11 | 2008-10-15 | 四川大学 | Treatment of heavy metal and organic matter in water with bio- adsorbent prepared from mushroom |
| CN102658093A (en) * | 2012-05-17 | 2012-09-12 | 四川大学 | Preparation method of efficient heavy metal biological adsorbent and treatment technology for water body heavy metal pollution thereof |
-
2012
- 2012-11-12 CN CN201210448982.1A patent/CN102923864B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4732681A (en) * | 1985-05-02 | 1988-03-22 | Ramot University Authority For Applied Research And Industrial Development Ltd. | Removal of contaminants |
| CN2090375U (en) * | 1990-12-12 | 1991-12-11 | 上海海鹰科学技术研究所 | Water purifier |
| CN101284700A (en) * | 2008-04-11 | 2008-10-15 | 四川大学 | Treatment of heavy metal and organic matter in water with bio- adsorbent prepared from mushroom |
| CN102658093A (en) * | 2012-05-17 | 2012-09-12 | 四川大学 | Preparation method of efficient heavy metal biological adsorbent and treatment technology for water body heavy metal pollution thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816716A (en) * | 2014-03-12 | 2014-05-28 | 河北工业大学 | Water treatment core component and water treatment device |
| CN103816716B (en) * | 2014-03-12 | 2016-02-17 | 河北工业大学 | Water treatment core component and water treatment facilities |
| CN110526421A (en) * | 2019-09-10 | 2019-12-03 | 中交铁道设计研究总院有限公司 | A method of heavy metal ions in sewage is removed using Gordonia bronchialis is hooked |
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