CN102247685A - Harmless treatment process for mercury-containing waste dangerous chemicals - Google Patents

Harmless treatment process for mercury-containing waste dangerous chemicals Download PDF

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CN102247685A
CN102247685A CN2010101777885A CN201010177788A CN102247685A CN 102247685 A CN102247685 A CN 102247685A CN 2010101777885 A CN2010101777885 A CN 2010101777885A CN 201010177788 A CN201010177788 A CN 201010177788A CN 102247685 A CN102247685 A CN 102247685A
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mercury
mercurous
discarded
reaction system
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CN102247685B (en
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孙斌
陈燕
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Zhejiang Guizero Environmental Protection Technology Co ltd
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SHANGHAI FUTUO ENVIRONMENT TECHNOLOGY CO LTD
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Abstract

The invention provides a harmless treatment process of mercury-containing waste dangerous chemicals, which comprises the following steps: 1) adding mercury-containing waste into water, and adjusting the pH value to be less than 2; then adding hydrogen peroxide to convert organic mercury and univalent mercury in the reaction system into Hg2+(ii) a 2) Adjusting the pH value of the reaction system to 11-12, and heating to remove excessive hydrogen peroxide; 3) adding compound sulfide to lead Hg in a reaction system to be2+Completely converted into HgS precipitate; adding ferrous salt to make excess S2-A precipitate is formed; 4) adding a curing material into the precipitate and the waste liquid generated in the step 3) for curing treatment to obtain a cement cured body. The process provided by the invention organically integrates chemical treatment and cement curing technology, and the obtained cement cured bodyThe leaching toxicity concentration of the mercury is less than 0.1mg/L, and the relevant national harmless standard is reached.

Description

A kind of mercurous discarded hazardous chemical harmless treatment process
Technical field
The invention belongs to the waste treatment processes technical field, relate in particular to a kind of harmless treatment process of mercurous discarded hazardous chemical.
Background technology
Curing technology is an important means of handling heavy metal refuse and other nonmetal hazardous waste.By solidifying harmful waste is fixed in a kind of fluid-tight matrix of inertia, refuse can change hazardous contaminant into low-solubility, low migration and hypotoxic physics and the more stable material of chemical characteristic after overcuring is handled.
The mechanism of curing technology stabilize waste composition is that the chemical bond between refuse and coagulating agent is made a concerted effort, coagulating agent is to the acting in conjunction to the absorption of refuse etc. of the physical inclusion of refuse, coagulating agent hydrated product, make refuse change not charge of flowable solids into or form tight solid, change permeability, compressibility and the intensity of refuse.Hazardous waste can reach after overcuring is handled and alleviate or eliminate himself harmfulness, can transport safely, and can carry out final disposal easily.
Cement is the most frequently used hazardous waste stabilizing agent.Because cement is a kind of cement inorganic material, can generate hard solidified cement body through behind the hydration reaction, reduce the purpose that hazard component leaches in the refuse thereby reach.The cement adding rate is different and different according to handling type of waste, and its excursion can reach 5%～60%.
The curing technology that with cement is base material has been used for handling the electroplating sludge that contains different heavy metals (as cadmium, chromium, copper, lead, zinc etc.), also is used for handling containing organic complex waste, as PCBs, grease, resin, asbestos etc.
At home, the cement solidification technology never is successfully applied to mercurous discarded hazardous chemical and handles, main cause is the mercurous rate height of mercurous hazardous chemical (usually more than 50%), except that mercuric sulphide, all can not effectively solidify, the all significantly leachings of total mercury in the sulfuric acid-nitric acid digestion agent of pH=3.20 ± 0.05 (" solid waste leaches toxicity leaching method sulfuric acid nitrate method " (HJ/T299-2007)) of its product, far above the innoxious standard of 0.1mg/L, its subsequent treatment can't reach safety-health-environmental protection requirement.
The meaning of mercurous discarded hazardous chemical harmlessness disposing:
Discarded hazardous chemical, be meant the hazardous chemical of being abandoned or abandoning by everyone without use, superseded, of poor quality, expired, as to lose efficacy hazardous chemical, the hazardous chemical that the hazardous chemical of in accordance with the law being taken in administrative management activity by authorities such as public security, customs, quality inspection, industry and commerce, agricultural, security control, environmental protection and the public of reception submit." national hazardous waste register " (2008) list the discarded hazardous chemical of 498 kinds of preferential administrative class, mercurous class has 53 kinds (to comprise mercuric benzoate, mercuric oxalate, mercuric iodixde, potassiomercuric iodide, mecrurous iodide, hexichol (base) mercury, dimethylmercury, mercuric fluoride, mercury, mercurol, methoxy ethyl mercury chloride, the methoxy ethyl mercuric acetate, pyrosulfuric acid mercury, di(2-ethylhexyl)phosphate ethyl mercury, mercuric sulphide, mercuric thiocyanate, the mercuric thiocyanate ammonium, potassium mercuric thiocyanate, mercuric sulfate, mereurous sulfate, 2-chlorine mercury phenol, the 4-chloromercuri-benzoate, ammonium chloride mercury, mercury chloride, methyl-mercuric chloride, ethylmercuric chloride, conotrane, gluconic acid mercury, amalgam lead, phenylmercury hydroxide, hydroxymethyl mercury, morsodren, mercury cyanide, mercuric potassium cyanide, the Phenylmercury Lactate triethanol ammonium, arsenic mercury, mercuric arsenate, mercuric salicylate, tetrachloro mercuration potassium, pentachloro-(benzene) phenol mercury, the pentachlorophenol phenyl mercury, mercuric nitrate, mercuric nitrate benzene, mercurous nitrate, mercuric bromide, mercurous bromide, mercury oxide, mercurous oxide, mercuric oxycyanide, phenylmercuric acetate, mercuric acetate, mercurous acetate, mercuric oleate etc.), account for 10% of kind sum.
The severe toxicity chemicals is meant the chemicals with very violent toxic hazard, comprises artificial synthetic chemicals and composition thereof (containing agricultural chemicals) and natural toxin." hypertoxic chemicals register " (2002 editions) include 335 kinds altogether, and wherein mercurous class comprises 16 kinds of mercuric iodixde, dimethylmercury, methoxy ethyl mercury chloride, methoxy ethyl mercuric acetate, di(2-ethylhexyl)phosphate ethyl mercury, mercuric thiocyanate, mercury chloride, ethylmercuric chloride, morsodren, mercury cyanide, Phenylmercury Lactate triethanol ammonium, mercuric nitrate, mercuric bromide, mercury oxide, phenylmercuric acetate, mercuric acetates etc.
The frequency that participates in International Operations along with China improves day by day, the importance of anti-terrorism work becomes increasingly conspicuous, in time, safety destroys the discarded particularly mercurous toxic articles of mercurous hazardous chemical and respective environment hidden danger is eliminated in assurance, becomes the vital task of departments of government such as various places public security, environmental protection.Yet compared with developed countries, China lacks the technology that really can realize discarded mercurous hazardous chemical harmlessness disposing, up to now, and the domestic destruction unit that does not occur possessing corresponding disposal qualification and actual disposing capacity as yet.Most regional mercurous toxic articles are deposited and are failed to obtain safety for many years and destroy and have a great potential safety hazard.
Summary of the invention
The object of the present invention is to provide a kind of harmless treatment process of mercurous discarded hazardous chemical, to overcome the deficiencies in the prior art.
The present invention solves above-mentioned technical problem by the following technical solutions:
A kind of harmless treatment process of mercurous discarded hazardous chemical may further comprise the steps:
1) in mercurous discarded object, add entry, and with the nitre acid for adjusting pH value less than 2; Add hydrogen peroxide then, make organic mercury and monovalence mercury in the reaction system all be converted into Hg 2+
2) pH with NaOH conditioned reaction system transfers to 11～12, is heated to 90-100 ℃ again and removes excessive hydrogen peroxide;
3) add compound sulfide, make the Hg in the reaction system 2+Be converted into the HgS precipitation fully; Add ferrous salt again and make excessive S 2-Form precipitation;
4) add curing materials in precipitation that in step 3), produces and the waste liquid and be cured processing, obtain solidified cement body.
In the described step 1), the addition of water should be controlled at and can make mercurous discarded object form the aqueous solution or suspension.
In the step 1), the mass percent concentration of described hydrogen peroxide is 20%～30%, all is converted into Hg for guaranteeing to make organic mercury and monovalence mercury in the reaction system 2+, the H in the hydrogen peroxide 2O 2Should be not less than 2.5: 1 with the mol ratio of mercury element in the mercurous discarded object.
In the step 3), described compound sulfide is vulcanized sodium and ammonium sulfide, and wherein the ratio of the mole of the element sulphur that contains in vulcanized sodium and the ammonium sulfide is (3.5～4.5): 1; The addition of described compound sulfide be the ratio of integral molar quantity and the mole of Hg element of element sulphur in (1.1～1.3): 1, guarantee that the Hg2+ in the reaction system can generate precipitation fully.
In the step 3), described ferrous salt can use ferrous sulfate, frerrous chloride or ferrous nitrate etc.The addition of described ferrous salt is with can be with the excessive S that exists in the reaction system 2-Forming precipitation gets final product.
In the step 4), the addition of described curing materials and the mass ratio of described mercurous discarded object are (6～8): 1; Described curing materials comprises 800# cement, poly-monoethanolamine, sulphur, sodium tetraborate and stannous chloride, and the proportioning of each component is as follows:
800# cement 89.5%-93.7%;
Poly-monoethanolamine 3%-5%;
Sulphur 2%-3%;
Sodium tetraborate 1%-2%;
Stannous chloride 0.3%-0.5%.
Technology provided by the present invention organically is integrated chemical disposal technology and cement solidification technology, adds compound sulfide under the specific pH condition by being chosen in, and makes Hg 2+Be converted into the mercuric sulphide precipitation quantitatively, be cured again and handle the formation solidified cement body.The leaching toxic concentration of mercury that finally makes the solidified cement body that is obtained has reached national relevant innoxious standard less than 0.1mg/L.
Compared with prior art, the present invention also has the following advantages:
1, whole industrial flow is safe and reliable, except that the carbon dioxide discharging is arranged when disposing organic mercury, and no waste gas, discharge of wastewater, waste residue toxicity can be ignored, and amount send professional landfill yard direct landfill at least, and amount can be concentrated greatly and send mercury refinement unit to recycle.
2, practical, can realize site disposal in conjunction with portable chemical laboratory, avoid toxic articles uncertain security risk in sending the disposal transportation outside, eliminated the social safety hidden danger of mercurous toxic articles fully.
Description of drawings
Fig. 1 is the harmless treatment process schematic flow sheet of mercurous discarded hazardous chemical of the present invention.
The specific embodiment
The present invention selects for use the mixture of multiple mercurous toxic articles as handling object, adopts chemical disposal-cement solidification technology to pass through pilot scale and through engineering approaches application respectively, and its implementation process is:
Embodiment 1 pilot scale process:
(1) handles object
Suzhou is the mercurous toxic articles of U.S. border cosmetics Co., Ltd still, mercuric iodixde 49.5g, and mercury chloride 488.9g, mercuric sulfate 223.3g, mercuric acetate 1988.1g, original mixture leachate (sulfuric acid nitrate method) total mercury is higher than 20000mg/L.
(2) treatment process process
Process flow diagram is as shown in Figure 1:
In portable reactor, above-mentioned mercurous toxic articles mixture is added 3000g water, and add the nitric acid hydrotropy, the pH value that makes solution is less than 2; Add hydrogen peroxide (mass percent concentration of hydrogen peroxide is 20%-30%) then and carry out oxidation reaction, wherein control the H in the hydrogen peroxide 2O 2With the mol ratio of mercury element in the mercurous discarded object be 2.5: 1.After reaction is carried out 1 hour, make organic mercury and monovalence mercury in the reaction system all be converted into Hg 2+
Add NaOH again the pH of reaction system is transferred to 11～12, be heated to 90-100 ℃ then to remove excessive hydrogen peroxide.Add vulcanized sodium and ammonium sulfide afterwards again, the ratio of the mole of the element sulphur that contains in vulcanized sodium and the ammonium sulfide is 4: 1; The integral molar quantity that contains element sulphur in control vulcanized sodium and the ammonium sulfide is 1.1: 1 with the ratio of the mole of Hg element.Add an amount of ferrous sulfate again and make S excessive in the reaction system 2-Form precipitation.
Above-mentioned gained precipitation is together added in the 200L carbon steel jar with waste liquid, add 800# cement 18400g, poly-monoethanolamine 800g, sulphur 400g, sodium tetraborate 300g and stannous chloride 100g again, be cured and handle the stable solidified cement body of formation.
(3) experimental rig specification and size
Portable reactor: 50L, material is double-deck Pyrex (GG17 material), configuration frequency control agitator 1 cover (250W), temperature-controlling system etc.
Solidification equipment: 200L carbon steel jar.
(4) test effect
Detect by " the hazardous waste landfill pollutes control criterion GB18598-2001 ", it is 0.18mg/L that solidified cement body leaches total mercury concentration, meets the direct landfill requirement of hazardous waste landfill yard.
Embodiment 2 through engineering approaches are used:
(1) handles object
The mercurous hazardous chemical of the green happy useless recycling disposal Co., Ltd admittedly in Wujiang, 218kg, mercury content (on average) 47.18% leaches mercury 2378mg/L.
(2) each processing unit technological parameter
Reaction tank: reaction tank is the PP structure, is of a size of ￠ 3.0m * 2.2m, dischargeable capacity 14m 3, dispose 1 agitating device, power is 7.5kW, on establish exhaust system (air-introduced machine power is 5.5kW), divide into plate and frame filter press 1 cover (80m 2).
Curing machine: dual horizontal axle forced mixer, productivity ratio 25m 3/ h.
Process flow diagram is as shown in Figure 1:
Above-mentioned mercurous toxic articles mixture 100kg is added 100kg water, and add the nitric acid hydrotropy, the pH value that makes solution is less than 2; Add hydrogen peroxide (mass percent concentration of hydrogen peroxide is 30%) then and carry out oxidation reaction, wherein control the H in the hydrogen peroxide 2O 2With the mol ratio of mercury element in the mercurous discarded object be 2.5: 1.After reaction is carried out 1 hour, make organic mercury and monovalence mercury in the reaction system all be converted into Hg 2+
Add NaOH again the pH of reaction system is transferred to 11～12, be heated to 95 ℃ then to remove excessive hydrogen peroxide.Add vulcanized sodium and ammonium sulfide afterwards again, the ratio of the mole of the element sulphur that contains in vulcanized sodium and the ammonium sulfide is 4: 1; The integral molar quantity that contains element sulphur in control vulcanized sodium and the ammonium sulfide is 1.2: 1 with the ratio of the mole of Hg element.Add an amount of ferrous sulfate again and make S excessive in the reaction system 2-Form precipitation.
Above-mentioned gained precipitation is together added in the curing machine with waste liquid, add 800# cement 552kg, poly-monoethanolamine 24kg, sulphur 12kg, sodium tetraborate 9kg and stannous chloride 3kg again, be cured and handle the stable solidified cement body of formation.
(3) through engineering approaches is used treatment effect
Detect by " the hazardous waste landfill pollutes control criterion GB18598-2001 ", it is 0.04mg/L that solidified cement body leaches total mercury concentration, meets the direct landfill requirement of hazardous waste landfill yard.
(4) technical economic analysis
By engineering operation cost analysis (mainly being made up of labour cost, the electricity charge, medicament expense and laboratory fee four parts), the mercurous hazardous chemical disposal cost of every 1kg is 97 yuan (criticizing scale by 100kg/).
Embodiment 3 pilot scale processes:
(1) handles object
Suzhou is the mercurous toxic articles of U.S. border cosmetics Co., Ltd still, mercuric iodixde 49.5g, and mercury chloride 488.9g, mercuric sulfate 223.3g, mercuric acetate 1988.1g, original mixture leachate (sulfuric acid nitrate method) total mercury is higher than 20000mg/L.
(2) treatment process process
Process flow diagram is as shown in Figure 1:
In portable reactor, above-mentioned mercurous toxic articles mixture is added 3000g water, and add the nitric acid hydrotropy, the pH value that makes solution is less than 2; Add hydrogen peroxide (mass percent concentration of hydrogen peroxide is 20%-30%) then and carry out oxidation reaction, wherein control the H in the hydrogen peroxide 2O 2With the mol ratio of mercury element in the mercurous discarded object be 2.5: 1.After reaction is carried out 1 hour, make organic mercury and monovalence mercury in the reaction system all be converted into Hg 2+
Add NaOH again the pH of reaction system is transferred to 11～12, be heated to 90-100 ℃ then to remove excessive hydrogen peroxide.Add vulcanized sodium and ammonium sulfide afterwards again, the ratio of the mole of the element sulphur that contains in vulcanized sodium and the ammonium sulfide is 4.5: 1; The integral molar quantity that contains element sulphur in control vulcanized sodium and the ammonium sulfide is 1.3: 1 with the ratio of the mole of Hg element.Add an amount of ferrous sulfate again and make S excessive in the reaction system 2-Form precipitation.
Above-mentioned gained precipitation is together added in the 200L carbon steel jar with waste liquid, add 800# cement 18740g, poly-monoethanolamine 600g, sulphur 400g, sodium tetraborate 200g and stannous chloride 60g again, be cured and handle the stable solidified cement body of formation.
(3) experimental rig specification and size
Portable reactor: 50L, material is double-deck Pyrex (GG17 material), configuration frequency control agitator 1 cover (250W), temperature-controlling system etc.
Solidification equipment: 200L carbon steel jar.
(4) test effect
Detect by " the hazardous waste landfill pollutes control criterion GB18598-2001 ", it is 0.15mg/L that solidified cement body leaches total mercury concentration, meets the direct landfill requirement of hazardous waste landfill yard.
Embodiment 4 pilot scale processes:
(1) handles object
Suzhou is the mercurous toxic articles of U.S. border cosmetics Co., Ltd still, mercuric iodixde 49.5g, and mercury chloride 488.9g, mercuric sulfate 223.3g, mercuric acetate 1988.1g, original mixture leachate (sulfuric acid nitrate method) total mercury is higher than 20000mg/L.
(2) treatment process process
Process flow diagram is as shown in Figure 1:
In portable reactor, above-mentioned mercurous toxic articles mixture is added 3000g water, and add the nitric acid hydrotropy, the pH value that makes solution is less than 2; Add hydrogen peroxide (mass percent concentration of hydrogen peroxide is 20%-30%) then and carry out oxidation reaction, wherein control the H in the hydrogen peroxide 2O 2With the mol ratio of mercury element in the mercurous discarded object be 2.5: 1.After reaction is carried out 1 hour, make organic mercury and monovalence mercury in the reaction system all be converted into Hg 2+
Add NaOH again the pH of reaction system is transferred to 11～12, be heated to 90-100 ℃ then to remove excessive hydrogen peroxide.Add vulcanized sodium and ammonium sulfide afterwards again, the ratio of the mole of the element sulphur that contains in vulcanized sodium and the ammonium sulfide is 3.5: 1; The integral molar quantity that contains element sulphur in control vulcanized sodium and the ammonium sulfide is 1.1: 1 with the ratio of the mole of Hg element.Add an amount of ferrous sulfate again and make S excessive in the reaction system 2-Form precipitation.
Above-mentioned gained precipitation is together added in the 200L carbon steel jar with waste liquid, add 800# cement 17900g, poly-monoethanolamine 1000g, sulphur 600g, sodium tetraborate 400g and stannous chloride 100g again, be cured and handle the stable solidified cement body of formation.
(3) experimental rig specification and size
Portable reactor: 50L, material is double-deck Pyrex (GG17 material), configuration frequency control agitator 1 cover (250W), temperature-controlling system etc.
Solidification equipment: 200L carbon steel jar.
(4) test effect
Detect by " the hazardous waste landfill pollutes control criterion GB18598-2001 ", it is 0.12mg/L that solidified cement body leaches total mercury concentration, meets the direct landfill requirement of hazardous waste landfill yard.

Claims (5)

1. the harmless treatment process of a mercurous discarded hazardous chemical may further comprise the steps:
1) in mercurous discarded object, add entry, and with the nitre acid for adjusting pH value less than 2; Add hydrogen peroxide then, make organic mercury and monovalence mercury in the reaction system all be converted into Hg 2+
2) with NaOH the pH of reaction system is transferred to 11～12, excessive hydrogen peroxide is removed in heating again;
3) add compound sulfide, make the Hg in the reaction system 2+Be converted into the HgS precipitation fully; Add ferrous salt again and make excessive S 2-Form precipitation;
4) add curing materials in precipitation that in step 3), produces and the waste liquid and be cured processing, obtain solidified cement body.
2. the harmless treatment process of mercurous discarded hazardous chemical as claimed in claim 1 is characterized in that, in the step 1), and the H in the described hydrogen peroxide 2O 2With the mol ratio of mercury element in the mercurous discarded object for being not less than 2.5: 1.
3. the harmless treatment process of mercurous discarded hazardous chemical as claimed in claim 1, it is characterized in that, in the step 3), described compound sulfide is vulcanized sodium and ammonium sulfide, and wherein the ratio of the mole of the element sulphur that contains in vulcanized sodium and the ammonium sulfide is (3.5～4.5): 1.
4. the harmless treatment process of mercurous discarded hazardous chemical as claimed in claim 1 is characterized in that, in the step 4), the addition of described curing materials and the mass ratio of described mercurous discarded object are (6～8): 1.
5. as the harmless treatment process of the described mercurous discarded hazardous chemical of arbitrary claim among the claim 1-4, it is characterized in that, described curing materials comprises 800# cement, poly-monoethanolamine, sulphur, sodium tetraborate and stannous chloride, and the weight percentage of each component is as follows:
800# cement 89.5%-93.7%;
Poly-monoethanolamine 3%-5%;
Sulphur 2%-3%;
Sodium tetraborate 1%-2%;
Stannous chloride 0.3%-0.5%.
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Cited By (11)

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CN102633296A (en) * 2012-05-04 2012-08-15 新疆大学 Method for preparing mercuric sulfide (HgS) quantum dots by using mercury-containing wastewater
CN102942211A (en) * 2012-11-19 2013-02-27 新疆天业（集团）有限公司 Method for recycling mercury from mercury-containing solid wastes
CN104032139A (en) * 2014-06-05 2014-09-10 东北大学 Method for recovering mercury from mercury-contained tailings through complexing extraction and consolidating decomposition
CN106621778A (en) * 2016-12-29 2017-05-10 江苏新世纪江南环保股份有限公司 Mercury removal method and device for ammonia desulfurization slurry
CN107597787A (en) * 2017-08-11 2018-01-19 航天凯天环保科技股份有限公司 A kind of method of waste slag containing mercury efficient stable
CN108395020A (en) * 2018-04-10 2018-08-14 北京科技大学 A kind of harmless disposal method that mercury overstandard waste water is general
CN108687114A (en) * 2018-05-16 2018-10-23 扬州杰嘉工业固废处置有限公司 A kind of Organomercurial waste is stable and cures disposing technique
CN109689169A (en) * 2016-06-29 2019-04-26 奥拉诺时代 The method of fixed mercurous waste
CN110217923A (en) * 2019-06-20 2019-09-10 海南宝来工贸有限公司 A kind of processing method of mixture-metal waste liquid
CN111020195A (en) * 2019-11-30 2020-04-17 沈阳环境科学研究院 Method for recovering waste mercuric bromide reagent
CN111672862A (en) * 2020-06-12 2020-09-18 北控城市环境资源(宜昌)有限公司 Disposal structure and disposal method for mercury-containing lamp tube

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CN102633296A (en) * 2012-05-04 2012-08-15 新疆大学 Method for preparing mercuric sulfide (HgS) quantum dots by using mercury-containing wastewater
CN102942211A (en) * 2012-11-19 2013-02-27 新疆天业（集团）有限公司 Method for recycling mercury from mercury-containing solid wastes
CN104032139A (en) * 2014-06-05 2014-09-10 东北大学 Method for recovering mercury from mercury-contained tailings through complexing extraction and consolidating decomposition
CN104032139B (en) * 2014-06-05 2016-03-30 东北大学 The method reclaiming mercury from mercurous tailings is decomposed in a kind of complexation leaching-strengthening
CN109689169B (en) * 2016-06-29 2021-02-09 奥拉诺时代 Method for fixing mercury-containing waste
CN109689169A (en) * 2016-06-29 2019-04-26 奥拉诺时代 The method of fixed mercurous waste
CN106621778A (en) * 2016-12-29 2017-05-10 江苏新世纪江南环保股份有限公司 Mercury removal method and device for ammonia desulfurization slurry
CN107597787A (en) * 2017-08-11 2018-01-19 航天凯天环保科技股份有限公司 A kind of method of waste slag containing mercury efficient stable
CN108395020A (en) * 2018-04-10 2018-08-14 北京科技大学 A kind of harmless disposal method that mercury overstandard waste water is general
CN108395020B (en) * 2018-04-10 2021-02-19 北京科技大学 Universal harmless disposal method for mercury overproof wastewater
CN108687114A (en) * 2018-05-16 2018-10-23 扬州杰嘉工业固废处置有限公司 A kind of Organomercurial waste is stable and cures disposing technique
CN108687114B (en) * 2018-05-16 2021-05-11 扬州杰嘉工业固废处置有限公司 Mercury-containing reagent waste stabilization and solidification treatment process
CN110217923A (en) * 2019-06-20 2019-09-10 海南宝来工贸有限公司 A kind of processing method of mixture-metal waste liquid
CN110217923B (en) * 2019-06-20 2021-11-23 海南宝来工贸有限公司 Treatment method of mixed heavy metal waste liquid
CN111020195A (en) * 2019-11-30 2020-04-17 沈阳环境科学研究院 Method for recovering waste mercuric bromide reagent
CN111672862A (en) * 2020-06-12 2020-09-18 北控城市环境资源(宜昌)有限公司 Disposal structure and disposal method for mercury-containing lamp tube

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