CN107487888A - Mercury removing agent and mercury removing method - Google Patents
Mercury removing agent and mercury removing method Download PDFInfo
- Publication number
- CN107487888A CN107487888A CN201710714429.0A CN201710714429A CN107487888A CN 107487888 A CN107487888 A CN 107487888A CN 201710714429 A CN201710714429 A CN 201710714429A CN 107487888 A CN107487888 A CN 107487888A
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- Prior art keywords
- mercury
- removal agent
- mercury removal
- mass ratio
- agent
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Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G13/00—Compounds of mercury
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/04—Oxidation reduction potential [ORP]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of mercury removal agents, and particularly relates to a mercury removal agent and a mercury removal method; the mercury removing agent consists of aluminum powder and iron powder, and the mass ratio of the aluminum powder to the iron powder is 1.5: 1-9: 1. The mercury removing agent in the technical scheme of the invention can realize the high-efficiency removal of mercury in the polluted acid with high and low mercury concentration, the mercury removing agent has few side reactions with other heavy metal ions in the polluted acid, the mercury removing selectivity is good, and the mercury extraction rate is high; the demercuration agent has good adaptability to the acidity of the waste acid, is suitable for removing mercury in waste acid wastewater with pH of 0.8-4.0, consumes acid in the wastewater in the reduction process compared with the traditional demercuration method, thereby reducing the acidity of the wastewater without adding alkali for neutralization. The method is simple and easy to operate, and meets the requirement of industrial application.
Description
Technical field
The invention belongs to mercury removal agent technical field, and in particular to a kind of mercury removal agent and demercuration method.
Background technology
Mercury is a kind of extremely strong heavy metal contaminants of bio-toxicity, into organism after be difficult be discharged, serious threat people
Class health.Between the past more than ten years, the concentration of mercury persistently rises in environment in world wide, turns into after climate change problem
Another Global Environmental Problems.
In nonferrous metallurgical process, metallurgical off-gas acid-making uses wet cleaning technique, void tower in wet dedusting, fills out
Substantial amounts of acid waste water, as waste acid can be produced during material tower, dynamic wave and electric demisting, is contained in acid water a large amount of
Copper, zinc, mercury, arsenic, the heavy metal classes pollutant such as cadmium.The characteristics of China's Pb-Zn deposits is that mercury content is higher in ore deposit, lead-zinc smelting cigarette
Mercurous concentration is higher in waste acid caused by gas acid manufacturing processes.At present, domestic waste acid processing uses lime-vulcanization method and sulphur mostly
Sour ferrous iron-lime method, mainly for the purpose of arsenic removal, while except heavy metal ion such as the mercury in decontaminated acid, copper, cadmiums.However, this
Removal of the two methods to mercury in waste acid is not thorough enough, and mercury, which enters in slag, can cause valuable metal resource in slag to be difficult to reclaim, and
And forever storage is also difficult to the No leakage of waste slag containing mercury, secondary pollution can all occur at any time.
The content of the invention
The invention provides a kind of mercury removal agent and demercuration method, solves removal to mercury in waste acid not enough thoroughly and slag
Middle valuable metal resource is difficult to the problem of recovery：
The present invention is achieved through the following technical solutions：
A kind of mercury removal agent, the mercury removal agent are made up of aluminium powder and iron powder, and the mass ratio of the aluminium powder and iron powder is 1.5:1—9:1.
The mass ratio of the aluminium powder and iron powder is 3:1—7:1.
The mass ratio of the aluminium powder and iron powder is 4:1—5:1.
A kind of method that demercuration is carried out using above-mentioned mercury removal agent, is filtered in lead-zinc smelting acid water with vacuum filter
Sludge, the acid water after filtering is placed in reactor, into reactor add mercury removal agent open stirring reaction；Mercury removal agent
In aluminium powder and iron powder mass ratio be 1.5:1—9:1, reaction temperature is 5-40 DEG C, and the mass ratio of mercury removal agent and mercury is 0.8:
1—2.0:1, stir speed (S.S.) is 50-300r/min, and reaction system is monitored in real time with oxidation-reduction potentiometer in course of reaction
Current potential, reaction system oxidation-reduction potential stop reaction when dropping to no longer change, reaction solution filters after settling 1-2h, by filter cake
It is placed in vacuum drying chamber and dries 12-24h at 20-50 DEG C, obtain mercuric sulphide product, filtrate carries out deep impurity-removing.
The mass ratio of the mercury removal agent and mercury is 1.2:1—1.6:1.
Beneficial effects of the present invention：1. the mercury removal agent in technical solution of the present invention is cheap and easy to get using raw material, pollution-free,
Be advantageous to popularization and application；2. the mercury removal agent in technical solution of the present invention can realize that the efficient of mercury takes off in the just waste acid of mercurous concentration
Remove, mercury removal agent and other heavy metal ion side reactions in waste acid are few, have that demercuration is selectively good, mercury recovery rate is high；3. the present invention
Mercury removal agent described in technical scheme has good adaptability to waste acid acidity, suitable for the acid water that pH is 0.8-4.0
The removing of middle mercury, compared to traditional demercuration method, the acid in waste water is consumed in reduction process so as to reduce waste water acidity, nothing
Again alkali need to be added to neutralize.Simply, easily operated with method, meet industrial applications；4. in addition, the present invention draws profit by experiment
The mass ratio of the method that demercuration is carried out with the mercury removal agent, mercury removal agent and mercury is 0.8:1—2.0:When 1, higher mercury can be achieved and take off
Except rate.
Brief description of the drawings
Fig. 1 is the mercuric sulphide XRD analysis collection of illustrative plates that the present invention obtains.
Embodiment
A kind of mercury removal agent, the mercury removal agent are made up of aluminium powder and iron powder, and the mass ratio of the aluminium powder and iron powder is 1.5:1—9:
1。
The mass ratio of the aluminium powder and iron powder is 3:1—7:1.
The mass ratio of the aluminium powder and iron powder is 4:1—5:1.
A kind of method that demercuration is carried out using above-mentioned mercury removal agent, is filtered in lead-zinc smelting acid water with vacuum filter
Sludge, the acid water after filtering is placed in reactor, into reactor add mercury removal agent open stirring reaction；Mercury removal agent
In aluminium powder and iron powder mass ratio be 1.5:1—9:1, reaction temperature is 5-40 DEG C, and the mass ratio of mercury removal agent and mercury is 0.8:
1—2.0:1, stir speed (S.S.) is 50-300r/min, and reaction system is monitored in real time with oxidation-reduction potentiometer in course of reaction
Current potential, reaction system oxidation-reduction potential, which is dropped to after certain value, stops reaction when no longer changing, reaction solution settles mistake after 1-2h
Filter, filter cake is placed in vacuum drying chamber and dries 12-24h at 20-50 DEG C, obtains mercuric sulphide product, and filtrate carries out depth and removed
It is miscellaneous.
The mass ratio of the mercury removal agent and mercury is 1.2:1—1.6:1.
Referring to Fig. 1, the X diffraction analysis of obtained product mercuric sulphide（XRD）Analyze collection of illustrative plates；XRD results show, mercuric sulphide
Product diffraction maximum is stronger, complete crystal form, no other impurities peak, illustrates that mercuric sulphide purity is higher.
Embodiment
Embodiment 1
PH is placed in reactor for 1.0 lead-zinc smelting acid water after taking filtering, is added mercury removal agent and is simultaneously opened stirring reaction.Really
It is 7 to determine aluminium powder and iron powder mass ratio in mercury removal agent:1, mercury removal agent/mercury mass ratio is 0.8, and reaction temperature is 20 DEG C, stir speed (S.S.)
For 50r/min, system oxidation-reduction potential tends to -220.0mV after reacting 30min, stops stirring reaction.After reaction solution sedimentation 1h
Filtered with vacuum filter pump, filter cake filter cake is placed in vacuum drying chamber dries 24h at 20 DEG C, obtains mercuric sulphide product.
Embodiment 2
PH is placed in reactor for 1.6 lead-zinc smelting acid water after taking filtering, is added mercury removal agent and is simultaneously opened stirring reaction.Really
It is 5 to determine aluminium powder and iron powder mass ratio in mercury removal agent:1, mercury removal agent/mercury mass ratio is 1.2:1, reaction temperature is 30 DEG C, stirring speed
Rate is 300r/min, and system oxidation-reduction potential tends to -200.0mV after reacting 40min, stops stirring reaction.Reaction solution settles
Filtered after 1.5h with vacuum filter pump, filter cake filter cake is placed in vacuum drying chamber dries 24h at 30 DEG C, obtains mercuric sulphide production
Product.
Embodiment 3
PH is placed in reactor for 4.0 lead-zinc smelting acid water after taking filtering, is added mercury removal agent and is simultaneously opened stirring reaction.Really
It is 1.5 to determine aluminium powder and iron powder mass ratio in mercury removal agent:1, mercury removal agent/mercury mass ratio is 2:1, reaction temperature is 40 DEG C, stirring speed
Rate is 200r/min, and system oxidation-reduction potential tends to -180.0mV after reacting 35min, stops stirring reaction.Reaction solution settles
Filtered after 2h with vacuum filter pump, filter cake filter cake is placed in vacuum drying chamber dries 20h at 50 DEG C, obtains mercuric sulphide product.
Embodiment 4
PH is placed in reactor for 0.8 lead-zinc smelting acid water after taking filtering, is added mercury removal agent and is simultaneously opened stirring reaction.Really
It is 9 to determine aluminium powder and iron powder mass ratio in mercury removal agent:1, mercury removal agent/mercury mass ratio is 1.2:1, reaction temperature is 5 DEG C, stir speed (S.S.)
For 200r/min, system oxidation-reduction potential tends to -220.0mV after reacting 40min, stops stirring reaction.Reaction solution settles 1h
Filtered afterwards with vacuum filter pump, filter cake filter cake is placed in vacuum drying chamber dries 12h at 50 DEG C, obtains mercuric sulphide product.
Embodiment 5
PH is placed in reactor for 2.0 lead-zinc smelting acid water after taking filtering, is added mercury removal agent and is simultaneously opened stirring reaction.Really
It is 3 to determine aluminium powder and iron powder mass ratio in mercury removal agent:1, mercury removal agent/mercury mass ratio is 1.5:1, reaction temperature is 25 DEG C, stirring speed
Rate is 100r/min, and system oxidation-reduction potential tends to -210.0mV after reacting 30min, stops stirring reaction.Reaction solution settles
Filtered after 1h with vacuum filter pump, filter cake filter cake is placed in vacuum drying chamber dries 24h at 40 DEG C, obtains mercuric sulphide product.
Claims (5)
- A kind of 1. mercury removal agent, it is characterised in that：The mercury removal agent is made up of aluminium powder and iron powder, and the mass ratio of the aluminium powder and iron powder is 1.5:1—9:1。
- A kind of 2. mercury removal agent according to claim 1, it is characterised in that：The mass ratio of the aluminium powder and iron powder is 3:1— 7:1。
- A kind of 3. mercury removal agent according to claim 1, it is characterised in that：The mass ratio of the aluminium powder and iron powder is 4:1— 5:1。
- A kind of 4. method that demercuration is carried out using mercury removal agent as claimed in claim 1, it is characterised in that：With vacuum filter mistake The sludge in lead-zinc smelting acid water is filtered, the acid water after filtering is placed in reactor, demercuration is added into reactor Stirring reaction is opened in agent；Aluminium powder and iron powder mass ratio in mercury removal agent are 1.5:1—9:1, reaction temperature is 5-40 DEG C, demercuration The mass ratio of agent and mercury is 0.8:1—2.0:1, stir speed (S.S.) is 50-300r/min, and oxidation-reduction potential is used in course of reaction Meter monitors the current potential of reaction system in real time, and reaction system oxidation-reduction potential stops reaction when dropping to no longer change, and reaction solution sinks Filtered after 1-2h of drop, filter cake is placed in vacuum drying chamber and dries 12-24h at 20-50 DEG C, obtains mercuric sulphide product, filtrate Carry out deep impurity-removing.
- 5. according to a kind of method that demercuration is carried out using mercury removal agent as claimed in claim 1 of claim 4, it is characterised in that： The mass ratio of the mercury removal agent and mercury is 1.2:1—1.6:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714429.0A CN107487888A (en) | 2017-08-18 | 2017-08-18 | Mercury removing agent and mercury removing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714429.0A CN107487888A (en) | 2017-08-18 | 2017-08-18 | Mercury removing agent and mercury removing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107487888A true CN107487888A (en) | 2017-12-19 |
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ID=60645290
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710714429.0A Pending CN107487888A (en) | 2017-08-18 | 2017-08-18 | Mercury removing agent and mercury removing method |
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| Country | Link |
|---|---|
| CN (1) | CN107487888A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115463640A (en) * | 2022-09-28 | 2022-12-13 | 中冶南方都市环保工程技术股份有限公司 | H in desorption flue gas 2 S and metallic mercury adsorbent and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381749A (en) * | 2011-09-09 | 2012-03-21 | 天辰化工有限公司 | Method for treating low-concentration mercury-containing wastewater |
| CN103071375A (en) * | 2013-02-07 | 2013-05-01 | 株洲三特环保节能有限公司 | Smoke demercuration device and smoke demercuration method |
| CN104445733A (en) * | 2014-11-25 | 2015-03-25 | 株洲冶炼集团股份有限公司 | Technology for removing thallium with lead and zinc smelting flue gas washing waste acid water |
| CN104692579A (en) * | 2015-02-16 | 2015-06-10 | 桂林奥尼斯特节能环保科技有限责任公司 | Advanced recycling method for wastewater generated in making acid by using smelting flue gas |
| CN105536499A (en) * | 2014-10-28 | 2016-05-04 | 中国石油天然气股份有限公司 | Mercury remover and preparation method and application thereof |
-
2017
- 2017-08-18 CN CN201710714429.0A patent/CN107487888A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381749A (en) * | 2011-09-09 | 2012-03-21 | 天辰化工有限公司 | Method for treating low-concentration mercury-containing wastewater |
| CN103071375A (en) * | 2013-02-07 | 2013-05-01 | 株洲三特环保节能有限公司 | Smoke demercuration device and smoke demercuration method |
| CN105536499A (en) * | 2014-10-28 | 2016-05-04 | 中国石油天然气股份有限公司 | Mercury remover and preparation method and application thereof |
| CN104445733A (en) * | 2014-11-25 | 2015-03-25 | 株洲冶炼集团股份有限公司 | Technology for removing thallium with lead and zinc smelting flue gas washing waste acid water |
| CN104692579A (en) * | 2015-02-16 | 2015-06-10 | 桂林奥尼斯特节能环保科技有限责任公司 | Advanced recycling method for wastewater generated in making acid by using smelting flue gas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115463640A (en) * | 2022-09-28 | 2022-12-13 | 中冶南方都市环保工程技术股份有限公司 | H in desorption flue gas 2 S and metallic mercury adsorbent and preparation method thereof |
| CN115463640B (en) * | 2022-09-28 | 2024-03-19 | 中冶南方都市环保工程技术股份有限公司 | H in desorption flue gas 2 S and metallic mercury adsorbent and preparation method thereof |
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Application publication date: 20171219 |