CN107188391A - A kind of method that high concentration dreg containing arsenic stabilizes curing process - Google Patents

A kind of method that high concentration dreg containing arsenic stabilizes curing process Download PDF

Info

Publication number
CN107188391A
CN107188391A CN201710610899.2A CN201710610899A CN107188391A CN 107188391 A CN107188391 A CN 107188391A CN 201710610899 A CN201710610899 A CN 201710610899A CN 107188391 A CN107188391 A CN 107188391A
Authority
CN
China
Prior art keywords
containing arsenic
dreg containing
dreg
high concentration
arsenic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710610899.2A
Other languages
Chinese (zh)
Inventor
周建
李成跃
李晨曦
史庆龙
囊恩昌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yunnan Dadi Environmental Protection Technology Co Ltd
Original Assignee
Yunnan Dadi Environmental Protection Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yunnan Dadi Environmental Protection Technology Co Ltd filed Critical Yunnan Dadi Environmental Protection Technology Co Ltd
Priority to CN201710610899.2A priority Critical patent/CN107188391A/en
Publication of CN107188391A publication Critical patent/CN107188391A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/008Sludge treatment by fixation or solidification
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/103Arsenic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds

Abstract

The invention discloses a kind of method that high concentration dreg containing arsenic stabilizes curing process, comprise the following steps:At ambient temperature, the pH of regulation dreg containing arsenic is to faintly acid;The co-precipitation material of excess is added into dreg containing arsenic, and adds water and stirs, stable sediment is generated;Add lime regulation pH value;Flying ash is added to stir;Add cement solidification and conserve.It is an advantage of the invention that:The arsenic in dreg containing arsenic can effectively be stablized, leaching concentration is reduced, and by the suction-operated of flying ash, the arsenic of residual is adsorbed, finally solidified using cement, reach the effect of stable curing.This method can the treatment of wastes with processes of wastes against one another, technological process is simple, workable, energy consumption is low.

Description

A kind of method of high concentration dreg containing arsenic stabilisation-curing process
Technical field
Disposal technology field is handled the invention belongs to hazardous waste, more particularly to a kind of high concentration dreg containing arsenic stabilisation- Solidification processing method.
Background technology
Arsenic widely exists in nature, is commonly called as metalloid, and toxicity is extremely strong, there is carcinogenesis.With human economic society Development, substantial amounts of matter containing arsenic is produced as attendants, and the extensive use in terms of agricultural, pharmaceutical sector and industry, Development to the mankind brings facility.Meanwhile, substantial amounts of dreg containing arsenic also causes fatal threat, serious influence to us The environment that we depend on for existence.According to statistics, the whole world is annual because the arsenic that mankind's activity is discharged into the environment of border is about 1,200,000 Ton, the arsenic that operation of nature is diluted in environment is about 2.2 ten thousand tons.In China, arsenic amount maximum is adopted in Guangxi, Yunnan, Hunan every year, It is still to be expanded by water body and soil by arsenic pollution more serious area, and the problem of arsenic pollution, through serious Threaten the living environment quality of resident.Therefore the processing method of research dreg containing arsenic is extremely urgent.
At present, the processing method for dreg containing arsenic can be divided into two kinds, respectively pyrogenic attack and wet-treating.Its moderate heat Method is mainly recycled by being calcined dreg containing arsenic extraction arsenic;Wet method is mainly the arsenic ion in dreg containing arsenic, then Absorbed by adding medicament or stabilize/solidify.But pyrogenic attack cost is higher, it is adaptable to extensive and arsenic content is higher Dreg containing arsenic;Stabilisation/solidification landfill is then influenceed by arsenic property in itself and surrounding environment so that the long term storage of arsenic Stability cannot be ensured.
The present invention carries out stabilizing/solidifying research by reasonable selection medicament to dreg containing arsenic, and it is useless to combine other danger The feature of thing, carries out the treatment of wastes with processes of wastes against one another, fully makes up the unstability that firming body containing arsenic is filled for a long time.
The content of the invention
It is an object of the invention to provide a kind of method of high concentration dreg containing arsenic stabilisation/curing process, this method can be grown Phase effectively stabilizes-solidify dreg containing arsenic, it can also substantially reduce medicament use cost while stability is strengthened.
The technical proposal of the invention is realized in this way:A kind of method of high concentration dreg containing arsenic stabilisation-curing process, Comprise the following steps:At ambient temperature, the pH of regulation dreg containing arsenic is to faintly acid;Added into dreg containing arsenic excessive coprecipitated Starch matter X, and add water and stir, makes the generation that reacts of co-precipitation material X and the matter containing arsenic in dreg containing arsenic stable Sediment;Add lime regulation regulation pH value;Then burning residual flying dust is added to stir;It is eventually adding cement solidification and supports Shield.
In the present invention, the pH of dreg containing arsenic is controlled 4 ~ 7, arsenic unstable in sludge can be made in the form of free state Leach.Stir after certain time, the co-precipitation material X of excess is added thereto, generate stable matter containing arsenic, add lime and adjust The PH of section system to 8 ~ 9, utilizes the Ca in lime2+React to form stable arsenide again with free state arsenic, and production Raw OH-Flocculant can be formed by some of deposit A materials together, play the effect of flocculation.Meanwhile, it is hazardous waste, common Remaining has substantial amounts of carbon after waste etc. is burned, and its short texture is porous, can be effectively to the absorption containing arsenic ion, flying dust Surface carries a large amount of negative electrical charges, can produce stronger electric field force to the arsenic of free state, can promote the coagulation of free state arsenic.
Preferably, described faintly acid refers to pH value between 4 ~ 7.
Preferably, the material that described regulation dreg containing arsenic is selected is mainly the one or more such as waste hydrochloric acid, waste nitric acid Inorganic acid.
Preferably, the co-precipitation material X main components of the addition are Polyferric Sulfate, the co-precipitation time is 30 ~ 60min.
Preferably, the dreg containing arsenic together deposit A mass ratio be 3:1~10:1.
Preferably, the pH value range added after lime reaction should be between 8 ~ 9.
Preferably, the flying dust produced by described trash burning has more carbon source, alkalescent, simultaneous with a large amount of Negative electrical charge.
Preferably, the mass ratio of the dreg containing arsenic collection and flying dust is 10:7~10:Between 1, the reaction time be 10 ~ 30min。
Preferably, the mass ratio of the dreg containing arsenic and cement is 5:1.
Preferably, after the step of the addition cement, in addition to maintenance;The time of the maintenance is 5~7 days.
The beneficial effects of the present invention are:
Utilize the Fe being co-precipitated in substance A3+With the co-precipitation containing arsenic ion and polymerism, the arsenic in dreg containing arsenic is carried out It is stable.For removal imperfection and unstability containing arsenic ion, the flying dust after incineration of waste has been used to be mixed with it in invention Stirring is closed, the flexibility and intensity of firming body had both been added, and had also taken full advantage of the stronger adsorptivity of flying dust and charge, is ensured The permanently effective stability of arsenic in dreg containing arsenic.
Embodiment
Below in conjunction with the implementation in the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched State, it is clear that described embodiment is only one of embodiment of the present invention, rather than whole embodiments.Based on this Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made Example is applied, the scope of protection of the invention is belonged to.
Embodiment 1
At ambient temperature, 100g dreg containing arsenics are weighed, 50mL water is added, 10min is mixed;Useless watery hydrochloric acid 3ml is added, stirring is anti- Should be 5 to pH value;8g co-precipitation material Polyferric Sulfates are added, 30min is reacted;Lime mixing reaction to the pH value for adding 6g is 8, Stir 15min;Add the stirring of 25g flying ash thereto again, react 25 min;Complete the stabilisation of arsenic;20g cement is added, Stir 10min;Conserved.
Performance test:According to leaching toxicity from solid waste method-horizontal vibration method(GB 5086.2-1997), arsenic leaches dense Degree meets hazard waste landfill contamination control standard(GB 18598-2001).
Embodiment 2
At ambient temperature, 100g dreg containing arsenics are weighed, 35mL water is added, 5min is mixed;Add 5ml waste nitric acids, stirring reaction It is 4 to pH value;10g co-precipitation material Polyferric Sulfates are added, 35min is reacted;Addition 12g lime mixes reaction to pH value 8.5, stir 10min;Add the stirring of 34g flying ash thereto again, react 30 min;Complete the stabilisation of arsenic;Add 15g water Mud, stirs 10min;Conserved.
Performance test:According to leaching toxicity from solid waste method-horizontal vibration method(GB 5086.2-1997), arsenic leaches dense Degree meets hazard waste landfill contamination control standard(GB 18598-2001).
Embodiment 3
At ambient temperature, 100g dreg containing arsenics are weighed, 40mL water is added, 5min is mixed;Add 2ml dilute sulfuric acids, stirring reaction It is 6 to pH value;6g co-precipitation material Polyferric Sulfates are added, 15min is reacted;Lime mixing reaction to the pH value for adding 9g is 9, is stirred Mix 10min;Add the stirring of 20g flying ash thereto again, react 30 min;Complete the stabilisation of arsenic;25g cement is added, is stirred Mix 15min;Conserved.
Performance test:According to leaching toxicity from solid waste method-horizontal vibration method(GB 5086.2-1997), arsenic leaches dense Degree meets hazard waste landfill contamination control standard(GB 18598-2001).
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (8)

1. a kind of method of high concentration dreg containing arsenic stabilisation-curing process, it is characterised in that:Comprise the following steps:
A, at ambient temperature, adjusts dreg containing arsenic system, makes pH to faintly acid, obtain sludge A;
B, the co-precipitation material X for adding into sludge A excess, and add water and stir, reaction is abundant, make co-precipitation material X with Matter containing arsenic in dreg containing arsenic A reacts, and generates stable sediment B;
C, the addition lime regulation pH value in sediment B, obtain reactant C;
D, add and flying ash and stir in reactant C, reaction is abundant, obtains reactant D;
E, the addition cement solidification reaction in reactant D, into curing period.
2. a kind of method of high concentration dreg containing arsenic stabilisation-curing process according to claim 1, it is characterised in that: Regulation dreg containing arsenic system described in step a, refers to be reconciled from useless diluted acid, described faintly acid refers to pH value 4 ~ 7 Between.
3. a kind of method of high concentration dreg containing arsenic stabilisation-curing process according to claim 1, it is characterised in that: Co-precipitation material X described in step b is Polyferric Sulfate, and it is 10 ~ 120min the coprecipitation reaction times that described reaction, which is fully,.
4. a kind of method of high concentration dreg containing arsenic stabilisation-curing process according to claim 1, it is characterised in that: Deposit X mass ratioes are 3 to dreg containing arsenic described in step b together:1~10:1.
5. a kind of method of high concentration dreg containing arsenic stabilisation-curing process according to claim 1, it is characterised in that: PH value range described in step c is between 8 ~ 9.
6. a kind of method of high concentration dreg containing arsenic stabilisation-curing process according to claim 1, it is characterised in that: Flying dust described in step d refers to residue after the burning such as clinical waste, in alkalescent.
7. a kind of method of high concentration dreg containing arsenic stabilisation-curing process according to claim 1, it is characterised in that: The mass ratio of dreg containing arsenic and flying dust described in step d is 10:7~10:1, described reaction fully refer to the reaction time for 10 ~ 60min。
8. a kind of method of high concentration dreg containing arsenic stabilisation-curing process according to claim 1, it is characterised in that: Curing reaction described in step e is the hybrid reaction of dreg containing arsenic and cement, and the mixing quality ratio of dreg containing arsenic and cement is 10:1 ~5:2, the curing period is 3~15 days.
CN201710610899.2A 2017-07-25 2017-07-25 A kind of method that high concentration dreg containing arsenic stabilizes curing process Pending CN107188391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710610899.2A CN107188391A (en) 2017-07-25 2017-07-25 A kind of method that high concentration dreg containing arsenic stabilizes curing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710610899.2A CN107188391A (en) 2017-07-25 2017-07-25 A kind of method that high concentration dreg containing arsenic stabilizes curing process

Publications (1)

Publication Number Publication Date
CN107188391A true CN107188391A (en) 2017-09-22

Family

ID=59884693

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710610899.2A Pending CN107188391A (en) 2017-07-25 2017-07-25 A kind of method that high concentration dreg containing arsenic stabilizes curing process

Country Status (1)

Country Link
CN (1) CN107188391A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109592776A (en) * 2019-02-02 2019-04-09 常熟理工学院 A kind of preparation method of the waste water renovation agent based on flying ash
CN110698009A (en) * 2019-11-14 2020-01-17 云南大地丰源环保有限公司 Passivation treatment method for arsenic-containing sludge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102218428A (en) * 2011-01-20 2011-10-19 杭州大地环保有限公司 Treatment method of arsenic slag
CN104556920A (en) * 2014-11-27 2015-04-29 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) Arsenic-containing neutralization slag solidifying and stabilizing agent and method for solidifying and stabilizing arsenic-containing neutralization slag by using same
CN104761113A (en) * 2015-04-28 2015-07-08 江苏理工学院 Stabilized solidification method of electroplating sludge
CN104774619A (en) * 2015-02-13 2015-07-15 湖南永清环保研究院有限责任公司 Immobilizing and stabilizing agent for arsenic-contaminated soil and application thereof
CN106148705A (en) * 2016-07-20 2016-11-23 长沙华时捷环保科技发展股份有限公司 The method going arsenic removal from acidic arsenic-containing solution

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102218428A (en) * 2011-01-20 2011-10-19 杭州大地环保有限公司 Treatment method of arsenic slag
CN104556920A (en) * 2014-11-27 2015-04-29 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) Arsenic-containing neutralization slag solidifying and stabilizing agent and method for solidifying and stabilizing arsenic-containing neutralization slag by using same
CN104774619A (en) * 2015-02-13 2015-07-15 湖南永清环保研究院有限责任公司 Immobilizing and stabilizing agent for arsenic-contaminated soil and application thereof
CN104761113A (en) * 2015-04-28 2015-07-08 江苏理工学院 Stabilized solidification method of electroplating sludge
CN106148705A (en) * 2016-07-20 2016-11-23 长沙华时捷环保科技发展股份有限公司 The method going arsenic removal from acidic arsenic-containing solution

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109592776A (en) * 2019-02-02 2019-04-09 常熟理工学院 A kind of preparation method of the waste water renovation agent based on flying ash
CN109592776B (en) * 2019-02-02 2021-04-27 常熟理工学院 Preparation method of waste water repairing agent based on incineration fly ash
CN110698009A (en) * 2019-11-14 2020-01-17 云南大地丰源环保有限公司 Passivation treatment method for arsenic-containing sludge

Similar Documents

Publication Publication Date Title
CN103073166B (en) Method for simultaneously stabilizing heavy metals and deeply dewatering municipal sludge for municipal sludge
CN105537247B (en) A kind of method for solidifying arsenic-containing waste residue using industrial residue
CN101567227B (en) Method for treating nuclear waste water and device thereof
CN104560046A (en) Contaminated soil passivator and preparation method and application thereof
CN103881727A (en) Stable curing agent of repairing heavy metal and toxic organic matter combined polluted soil and using method of curing agent
CN102218428A (en) Treatment method of arsenic slag
CN104070054A (en) Waste incineration fly ash sintering reduction treatment technique
CN105254166B (en) A kind of dewatered sludge curing agent, preparation method and application method
CN106334518B (en) A kind of recyclable magnetic phosphorus adsorbent and preparation method thereof
CN103170488B (en) The treatment process of incineration of refuse flyash solidifying agent and incineration of refuse flyash
CN102070352A (en) Method for recycling dewatered sludge, channel sediment and fly ash
CN105598146A (en) Curing agent for restoring soil polluted by chromium and restoration method
CN102627308B (en) Method for producing micron-sized light spherical calcium carbonate by using high-calcium incineration fly ash
CN107188391A (en) A kind of method that high concentration dreg containing arsenic stabilizes curing process
CN103910481B (en) A kind of Novel curing agent that utilizes solidifies the method disposing rubbish percolation liquid membrane concentrated solution mud
CN104083845A (en) Method for stabilizing water-soluble manganese ions in manganese ore leaching residue
CN106396308A (en) Excess activated sludge recycling method
CN104531158A (en) Curing agent and curing method thereof
CN110026410A (en) A method of metallic zinc in waste is stablized by the generation of spinelle
CN110743125A (en) Stabilizing agent for repairing arsenic slag and application method thereof
Lu et al. Reduction and Stabilization Remediation of Hexavalent Chromium (Cr6+)-contaminated Soil.
CN102773246B (en) Method for solidifying/stabilizing treatment of fly ashes in incineration of medical wastes
CN109453493A (en) Stabilization agent and its preparation method and application for handling the waste residue containing beryllium
JP2005138073A (en) Solid obtained by stabilizing waste
CN107285581A (en) A kind of processing method of multivalent state dreg containing arsenic

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170922

WD01 Invention patent application deemed withdrawn after publication