CN105329977A - Adsorbent for treating cyanide-containing wastewater produced in precious metal production and preparation method thereof - Google Patents
Adsorbent for treating cyanide-containing wastewater produced in precious metal production and preparation method thereof Download PDFInfo
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- CN105329977A CN105329977A CN201510900366.9A CN201510900366A CN105329977A CN 105329977 A CN105329977 A CN 105329977A CN 201510900366 A CN201510900366 A CN 201510900366A CN 105329977 A CN105329977 A CN 105329977A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/186—Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/42—Materials comprising a mixture of inorganic materials
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses an adsorbent for treating cyanide-containing wastewater produced in precious metal production and a preparation method thereof, wherein the adsorbent for treating the cyanide-containing wastewater produced in precious metal production comprises raw materials with parts by weight: zeolite molecular sieves 60-80 parts, calcium chloride 10-20 parts, polyacrylamide 3-5 parts and chitosan 2-4 parts. The adsorbent for treating the cyanide-containing wastewater produced in precious metal production uses the calcium chloride, polyethylene amide and the chitosan to load on the zeolite molecular sieves, is extremely rich in cavities, has large inner surface area, strong adsorptive property and obvious adsorptive effect to cyanide, and is extremely excellent in adsorptive effect to metal ions of gold, silver, cadmium, copper and chromium and the like simultaneously. Just 3-10g adsorbent for treating the cyanide-containing wastewater produced in precious metal production needs to be added in per liter wastewater when being used to treat the cyanide-containing wastewater produced in precious metal production, the concentration of cyanide and precious metals in wastewater can achieve national emission standards, and the adsorbent for treating the cyanide-containing wastewater produced in precious metal production is less in usage and low in cost, and has excellent economical benefit, ecological benefit and social benefit.
Description
Technical field
The present invention relates to technical field of waste water processing, a kind of precious metal that processes produces sorbent material of cyanide wastewater and preparation method thereof specifically.
Background technology
The waste water of cyanide wastewater general reference containing various prussiate, in the industrial production, cyanide process extracts precious metal, the industry such as production, coking, synthetic ammonia, plating, gas production of man-made fiber all uses prussiate or by-product prussiate, thus must discharge the cyanide wastewater of some amount in process of production.Especially in Mineral Processing Industry, in production technique, the consumption of prussiate is very large, and Cyanide in Waste Water root mass concentration is higher, also containing a large amount of compounds such as heavy metal, thiocyanate-.Cyanide wastewater toxicity is large, distribution is wide, therefore, strictly must be processed, make prussiate in outer draining reach the requirement of national environmental protection agencies dictate, otherwise, will work the mischief to people and animals and physical environment.
In precious metal production process, the treatment process of cyanide wastewater mainly contains following several: alkaline chlorination process, ferrous sulfate method, ozonize method, ion exchange method, active carbon adsorption etc.Wherein the treatment effect of basic treatment method is good, and equipment is simple, reduced investment, is convenient to management, is one of comparative maturity and the method that generally adopts.But its shortcoming has chlorine residue after process, and be difficult to accurately feed intake, equipment corrosion is serious, and working cost is higher.The feature of ferrous sulfate method is simple to operate, and processing costs is low, and recyclable Prussian blue precipitation makes pigment.But its shortcoming is poor processing effect, sludge is a lot, and isolate the waste water after insolubles in blue, in water outlet, cyanogen residual quantity can not directly be discharged greatly.The outstanding feature of By Ozone does not increase other pollution substances in whole process, and sludge quantity is few, and makes water outlet not easily smelly because of the dissolved oxygen added in water.But there is the problems such as energy consumption is large, cost is high, treatment effect is poor in it.The advantage of ion exchange method is that the water quality of purifying waste water is good, water conditioning, can reuse, simultaneously energy recovery of cyanide and heavy metal compound.But resin is expensive, so economy is poor.In addition, ion exchange resin regeneration difficulty, workload is large.
Gac is for existing quite long history of purifying waste water, and the bibliographical information being applied to Treatment of Cyanide-containing Wastewater also gets more and more.Gac has the ability of absorption prussiate, and also have the ability of adsorb oxygen, it not only has characterization of adsorption to show catalysis characteristics when Treatment of Cyanide-containing Wastewater simultaneously.Its advantage is simple to operate, and can adsorb and reclaim a large amount of gold and silver, economic benefit is very considerable.But the processing efficiency of simple activated carbon treatment cyanide wastewater is lower, cost is higher.Therefore, find a kind of sorbent material with stronger adsorption catalysis performance and low cost and substitute gac, will have great significance to the precious metal production of development China and environmental protection development.
Summary of the invention
The object of the invention is to produce for existing precious metal the cyanide wastewater process Problems existing produced, provide a kind of precious metal that processes to produce sorbent material of cyanide wastewater and preparation method thereof.Sorbent material of the present invention is that have stronger absorption and catalytic performance, good to the treatment effect of cyanide wastewater, cost is lower, has good economic benefit with calcium chloride, polyvinyl lactam and chitosan loaded on zeolite molecular sieve.
For realizing above object, the present invention is achieved through the following technical solutions:
Process the sorbent material that precious metal produces cyanide wastewater, comprise the raw material of following weight part: zeolite molecular sieve 60 ~ 80 parts, 10 ~ 20 parts, calcium chloride, polyacrylamide 3 ~ 5 parts and chitosan 2 ~ 4 parts.
As preferred embodiments of the present invention, the above-described sorbent material producing cyanide wastewater for the treatment of precious metal, comprises the raw material of following weight part: zeolite molecular sieve 75 parts, 15 parts, calcium chloride, polyacrylamide 5 parts and chitosan 3 parts.
Above-described zeolite molecular sieve is the hydrate of crystalline alumino metal-salt, and its chemical general formula is: Mx/m [(AlO2)
x(SiO2)
y] zH2O, wherein M represents positively charged ion, and m represents its valence state number, and z represents hydration number, x and y is integer.Zeolite molecular sieve is a kind of cage type hole skeleton crystal, and after dehydration, " cavity " is very abundant, has very large internal surface area, and its adsorptive power is extremely strong, and zeolite molecular sieve also has good catalysis, ion-exchange performance.
Process the preparation method that precious metal produces the sorbent material of cyanide wastewater, comprise the following steps:
(1) 10 ~ 20 parts, raw material calcium chloride, polyacrylamide 3 ~ 5 parts and chitosan 2 ~ 4 parts are added ultrasonic container, then add 200 ~ 500 parts, water, ultrasonic vibration all dissolves to raw material, obtains loading solution;
(2) be added in loading solution by raw material zeolite molecular sieve 60 ~ 80 parts, ultrasonic vibration 2 ~ 4h at temperature is 40 ~ 50 DEG C, filter, get solid phase and dry at 90 ~ 110 DEG C, be cooled to room temperature, namely discharging obtains sorbent material.
Process the application that precious metal produces the sorbent material of cyanide wastewater, produce in cyanide wastewater at often liter of precious metal and add sorbent material 3 ~ 10g.
Above-described precious metal produces the enterprise referring to and utilize cyanide process production golden or silver-colored.
Compared with prior art, beneficial effect of the present invention:
1, sorbent material of the present invention is with calcium chloride, polyvinyl lactam and chitosan loaded at zeolite molecular sieve, its " cavity " is very abundant, not only there is very large internal surface area, sorbent material is made to have very strong absorption property, remarkable to the adsorption effect of prussiate, this sorbent material also has the ability of adsorb oxygen, and catalytic performance is fabulous, thus improves adsorption efficiency.
2, this sorbent material is compound-type adsorbent, has special absorption property, even if at low concentrations, still there is good loading capacity, after this adsorbent, Cyanide in Waste Water compound mass concentration can drop to below 0.5mg/L, meets country's " integrated wastewater discharge standard ".And conventional sorbent material such as gac, organosilicon etc. can not adsorb prussiate when lower concentration, cyanide wastewater is caused to need secondary treatment just can reach state sewage emission standard.
3, when this sorbent material produces cyanide wastewater for the treatment of precious metal, often liter of waste water only needs to add sorbent material 3 ~ 10g, and the concentration of Cyanide in Waste Water compound can reach the emission standard of country, and consumption is few, and cost is low.
The advantages such as 4, sorbent material of the present invention has stronger absorption and catalytic performance, cost is lower, preparation technology is simple, when producing cyanide wastewater for the treatment of precious metal, not only to the advantages of good adsorption effect of prussiate, gold and silver precious metal ion can also be adsorbed, reclaim a large amount of gold or silver-colored precious metal; Can also adsorb the heavy metal ion such as cadmium, copper, chromium in waste water, improve the organic efficiency of precious metal and heavy metal, economic benefit, ecological benefits and social benefit are fabulous simultaneously.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, but be not limited to protection scope of the present invention.
Embodiment 1
Process the sorbent material that precious metal produces cyanide wastewater, comprise the raw material of following weight part: zeolite molecular sieve 60 parts, 12 parts, calcium chloride, polyacrylamide 4 parts and chitosan 2 parts.
The preparation method of sorbent material, comprises the following steps: 12 parts, raw material calcium chloride, polyacrylamide 4 parts and chitosan 2 parts are added ultrasonic container, then adds 300 parts, water, ultrasonic vibration all dissolves to raw material, obtains loading solution; Be added in loading solution by raw material zeolite molecular sieve 60 parts again, ultrasonic vibration 4h at temperature is 40 DEG C, filter, get solid phase and dry at 100 DEG C, be cooled to room temperature, namely discharging obtains sorbent material.
Embodiment 2
Process the sorbent material that precious metal produces cyanide wastewater, comprise the raw material of following weight part: zeolite molecular sieve 65 parts, 10 parts, calcium chloride, polyacrylamide 3 parts and chitosan 2 parts.
The preparation method of sorbent material, comprises the following steps: 10 parts, raw material calcium chloride, polyacrylamide 3 parts and chitosan 2 parts are added ultrasonic container, then adds 200 parts, water, ultrasonic vibration all dissolves to raw material, obtains loading solution; Be added in loading solution by raw material zeolite molecular sieve 65 parts again, ultrasonic vibration 3.5h at temperature is 40 DEG C, filter, get solid phase and dry at 90 DEG C, be cooled to room temperature, namely discharging obtains sorbent material.
Embodiment 3
Process the sorbent material that precious metal produces cyanide wastewater, comprise the raw material of following weight part: zeolite molecular sieve 70 parts, 18 parts, calcium chloride, polyacrylamide 4 parts and chitosan 3 parts.
The preparation method of sorbent material, comprises the following steps: 18 parts, raw material calcium chloride, polyacrylamide 4 parts and chitosan 3 parts are added ultrasonic container, then adds 400 parts, water, ultrasonic vibration all dissolves to raw material, obtains loading solution; Be added in loading solution by raw material zeolite molecular sieve 70 parts again, ultrasonic vibration 3h at temperature is 45 DEG C, filter, get solid phase and dry at 100 DEG C, be cooled to room temperature, namely discharging obtains sorbent material.
Embodiment 4
Process the sorbent material that precious metal produces cyanide wastewater, comprise the raw material of following weight part: zeolite molecular sieve 75 parts, 15 parts, calcium chloride, polyacrylamide 5 parts and chitosan 3 parts.
The preparation method of sorbent material, comprises the following steps: 15 parts, raw material calcium chloride, polyacrylamide 5 parts and chitosan 3 parts are added ultrasonic container, then adds 350 parts, water, ultrasonic vibration all dissolves to raw material, obtains loading solution; Be added in loading solution by raw material zeolite molecular sieve 75 parts again, ultrasonic vibration 3h at temperature is 50 DEG C, filter, get solid phase and dry at 110 DEG C, be cooled to room temperature, namely discharging obtains sorbent material.
Embodiment 5
Process the sorbent material that precious metal produces cyanide wastewater, comprise the raw material of following weight part: zeolite molecular sieve 80 parts, 20 parts, calcium chloride, polyacrylamide 3 parts and chitosan 4 parts.
The preparation method of sorbent material, comprises the following steps: 20 parts, raw material calcium chloride, polyacrylamide 3 parts and chitosan 4 parts are added ultrasonic container, then adds 500 parts, water, ultrasonic vibration all dissolves to raw material, obtains loading solution; Be added in loading solution by raw material zeolite molecular sieve 80 parts again, ultrasonic vibration 2.h at temperature is 50 DEG C, filter, get solid phase and dry at 90 DEG C, be cooled to room temperature, namely discharging obtains sorbent material.
Application Example 1
Certain golden production cyanide wastewater, concentration of cyanide is 37.4mg/L, and gold ion concentration is 1.83mg/L, and concentration of silver ions is 3.18mg/L, and copper ion concentration is 42.59mg/L, and concentration of cadmium ions is 0.48mg/L, and chromium ion concentration is 7.83mg/L.The waste water getting 1000L adds the sorbent material 5kg of embodiment 1, then regulates pH to 10, whip attachment 60min with sodium hydroxide.Waste water after process detects through relevant department, the results are shown in Table 1.
Application Example 2
Certain golden production cyanide wastewater, concentration of cyanide is 32.75mg/L, and gold ion concentration is 1.63mg/L, and concentration of silver ions is 4.21mg/L, and copper ion concentration is 35.79mg/L, and concentration of cadmium ions is 0.35mg/L, and chromium ion concentration is 8.02mg/L.The waste water getting 1000L adds the sorbent material 3kg of embodiment 2, then regulates pH to 9, whip attachment 30min with sodium hydroxide.Waste water after process detects through relevant department, the results are shown in Table 1.
Application Example 3
Certain golden production cyanide wastewater, concentration of cyanide is 168.74mg/L, and gold ion concentration is 3.28mg/L, and concentration of silver ions is 5.46mg/L, and copper ion concentration is 52.18mg/L, and concentration of cadmium ions is 0.34mg/L, and chromium ion concentration is 6.18mg/L.The waste water getting 1000L adds the sorbent material 10kg of embodiment 4, then regulates pH to 11, whip attachment 90min with sodium hydroxide.Waste water after process detects through relevant department, the results are shown in Table 1.
Application Example 4
Certain golden production cyanide wastewater, concentration of cyanide is 82.46mg/L, and gold ion concentration is 2.47mg/L, and concentration of silver ions is 3.56mg/L, and copper ion concentration is 38.49mg/L, and concentration of cadmium ions is 0.28mg/L, and chromium ion concentration is 5.68mg/L.The waste water getting 1000L adds the sorbent material 8kg of embodiment 4, then regulates pH to 10, whip attachment 60min with sodium hydroxide.Waste water after process detects through relevant department, the results are shown in Table 1.
Application Example 5
Certain silver production cyanide wastewater, concentration of cyanide is 56.79mg/L, and concentration of silver ions is 12.79mg/L, and copper ion concentration is 49.67mg/L, and concentration of cadmium ions is 0.32mg/L, and chromium ion concentration is 8.92mg/L.The waste water getting 1000L adds the sorbent material 8kg of embodiment 5, then regulates pH to 11, whip attachment 30min with sodium hydroxide.Waste water after process detects through relevant department, the results are shown in Table 1.
Table 1: sorbent material of the present invention is for the treatment of the adsorption effect of cyanide wastewater
| Unit: (mg/L) | Application Example 1 | Application Example 2 | Application Example 3 | Application Example 4 | Application Example 5 |
| Concentration of cyanide before wastewater treatment | 37.4 | 32.75 | 168.74 | 82.46 | 56.79 |
| Concentration of cyanide after wastewater treatment | 0.38 | 0.46 | 0.43 | 0.48 | 0.39 |
| Gold ion concentration before wastewater treatment | 1.83 | 1.63 | 3.28 | 2.47 | - |
| Gold ion concentration after wastewater treatment | 0.04 | 0.03 | 0.03 | 0.05 | - |
| Concentration of silver ions before wastewater treatment | 3.18 | 4.21 | 5.46 | 3.56 | 12.79 |
| Concentration of silver ions after wastewater treatment | 0.34 | 0.38 | 0.41 | 0.39 | 0.47 |
| Copper ion concentration before wastewater treatment | 42.59 | 35.79 | 52.18 | 38.49 | 49.67 |
| Copper ion concentration after wastewater treatment | 0.45 | 0.46 | 0.48 | 0.43 | 0.48 |
| Concentration of cadmium ions before wastewater treatment | 0.48 | 0.35 | 0.34 | 0.28 | 0.32 |
| Concentration of cadmium ions after wastewater treatment | 0.08 | 0.06 | 0.08 | 0.07 | 0.09 |
| Chromium ion concentration before wastewater treatment | 7.83 | 8.02 | 6.18 | 5.68 | 8.92 |
| Chromium ion concentration after wastewater treatment | 0.83 | 0.92 | 0.78 | 0.79 | 1.12 |
As can be seen from the above table, the cyanide wastewater that sorbent material of the present invention produces for the treatment of golden production or silver production enterprise, can not only adsorb well containing cyanogen compound and precious metal ion, also have good adsorption effect to copper, cadmium and chromium ion.After this sorbent treatment, the indices of cyanide wastewater all reaches state sewage emission standard.
Claims (5)
1. process the sorbent material that precious metal produces cyanide wastewater, it is characterized in that: the raw material comprising following weight part:
Zeolite molecular sieve 60 ~ 80 parts, 10 ~ 20 parts, calcium chloride, polyacrylamide 3 ~ 5 parts and chitosan 2 ~ 4 parts.
2. a kind of sorbent material processing precious metal production cyanide wastewater according to claim 1, is characterized in that: the raw material by following weight part: zeolite molecular sieve 75 parts, 15 parts, calcium chloride, polyacrylamide 5 parts and chitosan 3 parts.
3. a kind of preparation method processing the sorbent material of precious metal production cyanide wastewater according to claim 1, is characterized in that: comprise the following steps:
(1) 10 ~ 20 parts, raw material calcium chloride, polyacrylamide 3 ~ 5 parts and chitosan 2 ~ 4 parts are added ultrasonic container, then add 200 ~ 500 parts, water, ultrasonic vibration all dissolves to raw material, obtains loading solution;
(2) be added in loading solution by raw material zeolite molecular sieve 60 ~ 80 parts, ultrasonic vibration 2 ~ 4h at temperature is 40 ~ 50 DEG C, filter, get solid phase and dry at 90 ~ 110 DEG C, be cooled to room temperature, namely discharging obtains sorbent material.
4. a kind of application processing the sorbent material of precious metal production cyanide wastewater according to claim 1, is characterized in that: produce in cyanide wastewater at often liter of precious metal and add sorbent material 3 ~ 10g.
5. a kind of application processing the sorbent material of precious metal production cyanide wastewater according to claim 1, it is characterized in that: golden production waste water is carried out adsorption treatment, containing concentration of cyanide in waste water is 168.74mg/L, gold ion concentration is 3.28mg/L, concentration of silver ions is 5.46mg/L, copper ion concentration is 52.18mg/L, and concentration of cadmium ions is 0.34mg/L, and chromium ion concentration is 6.18mg/L.The waste water getting 1000L adds sorbent material 10kg, then regulates pH to 11, whip attachment 90min to reach state sewage emission standard with sodium hydroxide.
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| CN110354825A (en) * | 2019-07-12 | 2019-10-22 | 吉林建筑大学 | A kind of adsorbent for electroplating wastewater adsorption treatment |
| CN110354824A (en) * | 2019-07-12 | 2019-10-22 | 吉林建筑大学 | A kind of adsorbent for the adsorption treatment of waste water containing size |
| WO2020258588A1 (en) * | 2019-06-28 | 2020-12-30 | 华中科技大学 | Heterogeneous coagulation adsorbent for heavy metal adsorption, preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110354825A (en) * | 2019-07-12 | 2019-10-22 | 吉林建筑大学 | A kind of adsorbent for electroplating wastewater adsorption treatment |
| CN110354824A (en) * | 2019-07-12 | 2019-10-22 | 吉林建筑大学 | A kind of adsorbent for the adsorption treatment of waste water containing size |
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Application publication date: 20160217 |