CN110102275A - A kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon - Google Patents

A kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon Download PDF

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Publication number
CN110102275A
CN110102275A CN201910243702.5A CN201910243702A CN110102275A CN 110102275 A CN110102275 A CN 110102275A CN 201910243702 A CN201910243702 A CN 201910243702A CN 110102275 A CN110102275 A CN 110102275A
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China
Prior art keywords
active carbon
gold mine
free radical
mine waste
hydroxyl radical
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CN201910243702.5A
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Chinese (zh)
Inventor
贾振民
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Qingdao Zhong Tong Ozone Science And Technology Ltd
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Qingdao Zhong Tong Ozone Science And Technology Ltd
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Priority to CN201910243702.5A priority Critical patent/CN110102275A/en
Publication of CN110102275A publication Critical patent/CN110102275A/en
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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
    • B01J20/34—Regenerating or reactivating
    • B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
    • 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
    • B01J20/34—Regenerating or reactivating
    • B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
    • B01J20/3475—Regenerating or reactivating using a particular desorbing compound or mixture in the liquid phase
    • 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
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Materials Engineering (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Water Treatment By Sorption (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The invention discloses a kind of methods of hydroxyl radical free radical regeneration gold mine waste active carbon, gold mine waste is through activated carbon adsorption, remove cyanogen root, thiocyanate, after heavy metal and xanthate, activated carbon adsorption saturation, active carbon tap water or clear water are impregnated, utilize backwashing equipment and blower device mating reaction, the dual recoil of strength air water is carried out to active carbon and washes down processing, remove the suspended matter of activated carbon surface, particulate matter and salinity, hydroxyl radical free radical is recycled quickly to remove the simultaneously pollutant of degrading activity carbon surface and inner transition hole and micropore in dozens of minutes, activity recovery charcoal adsorption function, it realizes to activated carbon surface and internal dual cleaning, it is ready for next round adsorption cycle.The present invention integrates activated carbon adsorption treatment process and regenerating active carbon treatment process, it is not necessary to and carbon granule is removed tower regeneration, active carbon service life can be greatly increased, it is time saving and energy saving, facilitate operation, increases economic efficiency.

Description

A kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon
Technical field
The present invention relates to gold mine waste pollution control fields more particularly to a kind of hydroxyl radical free radical regeneration gold mine waste to live The method of property charcoal.
Background technique
The waste water of gold mine has the characteristics that with high salt and high COD, contains a large amount of cyanide, rhodanide, heavy metal, xanthate Equal pollutants, it is good using active carbon processing gold mine waste low cost, effect, but active carbon is easily saturated, and needing to regenerate could protect Hold the effect of gold mine waste processing, it is ensured that economic benefit and environmental benefit, conventional active carbon regenerating technology, such as traditional high temperature Heat source method of reproduction (steam activity furnace, micro wave regeneration furnace and put a high temperature regeneration method), energy consumption is high, troublesome in poeration, effect is poor, chemistry Medical method (acid-base method) regeneration effect is poor, and the regeneration of general chemistry oxidizing process is not thorough, and causes gold mine waste pollution control effect equal It is undesirable.
Summary of the invention
It (steam activity furnace, micro wave regeneration furnace and is put to solve traditional high temperature heat source method of reproduction present in background technique Point high temperature regeneration method), energy consumption is high, troublesome in poeration, effect is poor, and chemical method (acid-base method) regeneration effect is poor, general chemistry oxygen The regeneration of change method is not thorough, and the technical problem for causing gold mine waste pollution control effect undesirable, the present invention proposes a kind of hydroxyl Free radical regenerate gold mine waste active carbon method, acted on by hydroxyl radical free radical, it is easy to operate, full-automatic, be not necessarily to people Work, economically feasible, excellent effect, regeneration thoroughly and significantly extend active carbon service life, to solve to mention in above-mentioned background technique Out the problem of.
A kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon proposed by the present invention, method and step include:
S1, gold mine waste enter activated carbon adsorption/regenerator；
S2, active carbon adsorb the polluters such as cyanide, rhodanide, heavy metal and xanthate in gold mine waste Until saturation, is purified water；
S3, the active carbon tap water or clear water of adsorption saturation are impregnated, followed by backwashing equipment and blower device Mating reaction carries out the dual recoil of strength air water to active carbon and washes down processing, remove the suspended matter of activated carbon surface, particulate matter and Salinity completes active carbon preliminary purification；
S4, starting compressed air unit, obtain compressed air；
S5, oil, moisture and particulate matter in compressed air are removed using the cold dry filter device of air, obtains clean do Air；
S6, using oxygen generating plant to nitrogen and oxygen separation in clean dry air, produce purity and reach 90% or more Purity oxygen obtains oxygen feed；
S7, the high-frequency high-voltage field ionization through ozone generator, oxygen feed are converted into the ozone gas of high concentration；
S8, ozone gas and H2O2Activated carbon adsorption/regenerator is respectively enterd, the two, which combines, generates hydroxyl radical free radical, wherein Concentration of ozone gas 120~150mg/L, H2O2Addition proportion with sewage is 2~5/100, PH 8-10；
S9, the transitional pore of hydroxyl radical free radical and active carbon and cyanide, rhodanide, xanthate and heavy metal in micropore Regenerating active carbon is completed in reaction；
Active carbon after S10, regeneration enters the adsorption cycle of next round.
Preferably, in S2, after the assay was approved, reuse is produced again to purified water.
Preferably, in S3, using Roots blower as blower device.
Preferably, the cold dry filter device of compressed air unit, air, oxygen generating plant and ozone devices with the full automatic control system of LC System communication connection.
Preferably, in S4, compressed air unit is helical-lobe compressor.
Preferably, in S6, oxygen generating plant is PSA oxygenerator.
Preferably, in S7, ozone generator is connect with cooling-water machine.
Preferably, in S7, concentration of ozone gas 120mg/L-150mg/L.
The present invention integrates activated carbon adsorption treatment process and regenerating active carbon treatment process, and when regenerating active carbon need not Carbon granule is removed tower regeneration, facilitates operation, it is time saving and energy saving, it improves benefit, gold mine waste removes cyanogen root, sulphur through activated carbon adsorption After cyanogen root, heavy metal and xanthate, activated carbon adsorption saturation, transitional pore and microporous space are filled by a large amount of pollutants, lose absorption Ability, the present invention first impregnates active carbon tap water or clear water, using backwashing equipment and blower device mating reaction, to work Property charcoal carry out the dual recoil of strength air water and wash down processing, remove the suspended matter, particulate matter and salinity of activated carbon surface, recycling hydroxyl Base free radical (OH), quickly removal and the pollution of degrading activity carbon surface and inner transition hole and micropore in dozens of minutes Object, activity recovery charcoal adsorption function are realized to activated carbon surface and internal dual cleaning, carry out standard for next round adsorption cycle It is standby.
Ozone is the allotropy body that oxygen passes through electrion synthesis, ozone oxidation reduction potential 2.07V, therefore chemistry Property is active, has very strong oxidability, oxidability is only second to fluorine, the oxygen of nascent state is voluntarily decomposed under room temperature, smelly Oxygen is increasingly applied to petroleum, chemical industry, light textile, papermaking, food, fragrance, medicine synthesis etc. as oxidant, The present invention utilizes ozone combination H2O2, moment generation hydroxyl radical free radical (OH, oxidation-reduction potential 2.80V), hydroxyl radical free radical is gone Pollution capacity and rate are better than single ozone technology, solve the problems, such as the indeterminable pollutant oxygenolysis of ozone, while hydroxyl Base free radical (OH) is the most strong oxidizer of nature discovery, can be various quickly, in non-selectivity, thorough oxidation environment Organic and inorganic pollution, wherein ozone forms hydroxyl radical free radical (OH) reaction process are as follows: 2O3+H2O2→2·OH+3O2, and In PH8-10, organic (inorganic) the pollutant ability of hydroxyl radical free radical (OH) oxygenolysis is most strong, hydroxyl radical free radical (OH) With cyanide, rhodanide, xanthate and the metal reaction for being adsorbed on active carbon inner transition hole or micropore, transitional pore or micro- is vacateed The blocked space in hole, the active carbon after regeneration can enter next adsorption cycle, which regenerates gold mine waste and use The method of active carbon is different from the method that traditional high-temperature activation furnace destroys active carbon internal mechanical structure, can greatly increase activity Charcoal service life, increases economic efficiency.
Detailed description of the invention
Fig. 1 is the flow chart for the method that a kind of hydroxyl radical free radical proposed by the present invention regenerates gold mine waste active carbon.
Specific embodiment
As shown in FIG. 1, FIG. 1 is a kind of methods of hydroxyl radical free radical regeneration gold mine waste active carbon proposed by the present invention Flow chart.
Referring to Fig.1, a kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon, method and step include:
S1, gold mine waste enter activated carbon adsorption/regenerator；
S2, active carbon adsorb the polluters such as cyanide, rhodanide, heavy metal and xanthate in gold mine waste Until saturation, is purified water；
S3, the active carbon tap water or clear water of adsorption saturation are impregnated, followed by backwashing equipment and blower device Mating reaction carries out the dual recoil of strength air water to active carbon and washes down processing, remove the suspended matter of activated carbon surface, particulate matter and Salinity completes active carbon preliminary purification；
S4, starting compressed air unit, obtain compressed air；
S5, oil, moisture and particulate matter in compressed air are removed using the cold dry filter device of air, obtains clean do Air；
S6, using oxygen generating plant to nitrogen and oxygen separation in clean dry air, produce purity and reach 90% or more Purity oxygen obtains oxygen feed；
S7, the high-frequency high-voltage field ionization through ozone generator, oxygen feed are converted into the ozone gas of high concentration；
S8, ozone gas and H2O2Activated carbon adsorption/regenerator is respectively enterd, the two, which combines, generates hydroxyl radical free radical, wherein Concentration of ozone gas 120~150mg/L, H2O2Addition proportion with sewage is 2~5/100, PH 8-10；
S9, the transitional pore of hydroxyl radical free radical and active carbon and cyanide in micropore, rhodanide, xanthate and metal are anti- It answers, completes regenerating active carbon；
Active carbon after S10, regeneration enters the adsorption cycle of next round.
In a specific embodiment, after the assay was approved, reuse is produced again to purified water.
Further, using Roots blower as blower device.
Further, the cold dry filter device of compressed air unit, air and oxygen generating plant are communicated with the full robot control system(RCS) of LC Connection.
Further, compressed air unit is helical-lobe compressor.
Further, oxygen generating plant is PSA oxygenerator.
Further, ozone generator is connect with cooling-water machine.
Further, concentration of ozone gas 120mg/L-150mg/L.
Reaction involved in the present embodiment is as follows:
2O3+H2O2=2OH+3O2
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (8)

1. a kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon, which is characterized in that method and step includes:
S1, gold mine waste enter activated carbon adsorption/regenerator；
S2, active carbon absorption is carried out to polluters such as cyanide, rhodanide, heavy metal and xanthate in gold mine waste until Saturation, is purified water；
S3, the active carbon tap water or clear water of adsorption saturation are impregnated, is cooperated followed by backwashing equipment and blower device Effect carries out the dual recoil of strength air water to active carbon and washes down processing, removes the suspended matter, particulate matter and salt of activated carbon surface Point, complete active carbon preliminary purification；
S4, starting compressed air unit, obtain compressed air；
S5, oil, moisture and particulate matter in compressed air are removed using the cold dry filter device of air, obtains clean dry sky Gas；
S6, using oxygen generating plant to nitrogen and oxygen separation in clean dry air, produce the pure oxygen that purity reaches 90% or more Gas obtains oxygen feed；
S7, the high-frequency high-voltage field ionization through ozone generator, oxygen feed are converted into the ozone gas of high concentration；
S8, ozone gas and H2O2Activated carbon adsorption/regenerator is respectively enterd, the two, which combines, generates hydroxyl radical free radical, this process Reaction principle be 2O3+H2O2→2·OH+3O2, wherein concentration of ozone gas 120-150mg/L, H2O2With the addition of sewage Proportion is (2-5): 100, pH 8-10；
S9, the transitional pore of hydroxyl radical free radical and active carbon and cyanide in micropore, rhodanide, xanthate and heavy metal are rapid Regenerating active carbon is completed in reaction；
Active carbon after S10, regeneration enters the adsorption cycle of next round.
2. a kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon according to claim 1, which is characterized in that In S2, after the assay was approved, reuse is produced again to purified water.
3. a kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon according to claim 1, which is characterized in that In S3, using Roots blower as blower device.
4. a kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon according to claim 1, which is characterized in that The cold dry filter device of compressed air unit, air, oxygen generating plant and ozone devices with the full robot control system(RCS) communication connection of LC.
5. a kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon according to claim 4, which is characterized in that In S4, compressed air unit is helical-lobe compressor.
6. a kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon according to claim 4, which is characterized in that In S6, oxygen generating plant is PSA oxygenerator.
7. a kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon according to claim 1, which is characterized in that In S7, ozone generator is connect with cooling-water machine.
8. a kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon according to claim 1, which is characterized in that In S7, concentration of ozone gas is 120mg/L~150mg/L.
CN201910243702.5A 2019-03-28 2019-03-28 A kind of method of hydroxyl radical free radical regeneration gold mine waste active carbon Withdrawn CN110102275A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110882682A (en) * 2019-12-04 2020-03-17 吉林省电力科学研究院有限公司 Regeneration method of activated carbon for water treatment in thermal power plant
CN115215405A (en) * 2022-07-28 2022-10-21 中国科学院过程工程研究所 Method for in-situ regeneration of adsorbent for treating organic wastewater and application

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110882682A (en) * 2019-12-04 2020-03-17 吉林省电力科学研究院有限公司 Regeneration method of activated carbon for water treatment in thermal power plant
CN115215405A (en) * 2022-07-28 2022-10-21 中国科学院过程工程研究所 Method for in-situ regeneration of adsorbent for treating organic wastewater and application

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