CN109943340A - For administering the passivator and its preparation and application of high arsenic waste residue - Google Patents
For administering the passivator and its preparation and application of high arsenic waste residue Download PDFInfo
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- CN109943340A CN109943340A CN201910395425.XA CN201910395425A CN109943340A CN 109943340 A CN109943340 A CN 109943340A CN 201910395425 A CN201910395425 A CN 201910395425A CN 109943340 A CN109943340 A CN 109943340A
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Abstract
The invention discloses a kind of for administering the passivator and its preparation and application of high arsenic waste residue, and passivator includes following components by weight percentage: ferric sulfate or ferrous sulfate 5-20%, flyash 10-30%, sodium metasilicate 5-10%, surplus are filler.It is of the invention for administering the passivator of high arsenic waste residue, according to than being added in high arsenic waste residue with being prepared into high molecular polymer, the arsenic in waste residue is induced, is adsorbed, is reunited, single, stable arsenic compound is ultimately formed, controls the migration of arsenic in waste residue.By triple role, the stabilisation of arsenic slag being realized, reaching the standard into landfill yard, technical effect is better than traditional technology, and can reduce cost, reduces increase-volume ratio.It can be not in for a long time effectively arsenic pollution rebound phenomena.Passivator of the invention using when additive amount of medicament only need to account for the weight ratio of high arsenic waste residue 3%-10% to be processed.Construction technology is simple, and construction site only needs to puddle and hydration process, not only simple but also environmentally friendly.
Description
Technical field
It is the present invention relates to fixed-end forces technical field, in particular to a kind of for administering the passivator and its system of high arsenic waste residue
Standby and application method.
Background technique
Arsenic-containing waste residue mostlys come from arsenical (containing arsenic oxide, sulfide, with calcium salt containing arsenic etc.), toxicity and
The chemical form of arsenic is related, and the toxic dose to human body is 0.010-0.052g, lethal dose 0.06-0.20g.Wherein compare
Typical arsenic compound, such as As2S3、As2O3、AsH3It is extremely toxic substance.The oxide of trivalent arsenic is commonly called as white arsenic or arsenic, chemistry
Formula is As4O6, it is generally written into As2O3, product when being the compound burning of elemental arsenic or arsenic has severe toxicity.Arsenic can in vivo by
It gradually accumulates, incubation period, from several years to decades etc. wherein slow poisoning symptom included: skin lesion, peripheral neuropathy, skin
Skin cancer and peripheral vascular disease etc..Since arsenic is easy to cause lung cancer and cutaneum carcinoma, ground by the World Health Organization and international cancer
Study carefully mechanism and is classified as one of carcinogen of the mankind.There is also harm to plant for arsenic.When the arsenic content in environment is higher, can hinder to plant
The transport of moisture in object influences its absorption to nutrition and moisture, causes the destruction of chlorophyll, thus inhibit plant growth and
Development, then will lead to Plant death when arsenic content reaches certain threshold value.
The method for handling arsenic-containing waste residue in the prior art mainly includes application technology as the second resource, curing technology and stabilisation skill
Art.Every kind of method has its advantage, but there is also following disadvantages simultaneously:
Application technology as the second resource includes pyrogenic process roasting and wet-leaching.Environmental pollution is serious for pyrogenic process roasting, raw material adapts to model
Enclose that small, investment is larger and the economic benefit is not high.Wet-leaching process flow is complicated, requires operator high and at high cost
It is high etc. to be difficult to put into actual production operation.
Curing technology includes cement solidification, plastic material solidification and melting and solidification etc..Cement solidification is held bigger admittedly, is easier to
It dissolves out, easily rupturable when in waste containing special salt, material additive amount is generally not less than 20%, and increase-volume is bigger, by acid rain
Etc. conditions influence, Final pollution be easy rebound.When plastic material solidification requires high, heating to equipment and operator easily kindling or
Loss, and need pre-treatment.The requirement of melting and solidification complex process, equipment material, especially excessively high processing cost make it
The less processing for arsenic-containing waste residue.
Stabilization technology is generally used cooperatively with chemical Strong oxdiative technology, the disadvantage is that construction pollution is big, site operation is difficult
Degree is big, and index is difficult to control.
Therefore, it is necessary to be improved to solve the above technical problems to the prior art.
Summary of the invention
In view of this, the passivator and its preparation that the purpose of the present invention is to provide a kind of for administering high arsenic waste residue and making
With method, site operation difficulty is small, and material additive amount is small to reduce increase-volume ratio, reduces cost, and stability is strong, is not easy to rebound.
It is realized in particular by following technical scheme:
It is of the invention for administering the passivator of high arsenic waste residue, by weight percentage include following components: ferric sulfate or
Ferrous sulfate 5-20%, flyash 10-30%, sodium metasilicate 5-10%, surplus are filler.
It by weight percentage include following components: ferric sulfate or ferrous sulfate 13-18%, powder in optimal technical scheme
Coal ash 8-12%, sodium metasilicate 5-8%, surplus are filler.
It by weight percentage include following components: ferric sulfate or ferrous sulfate 15%, flyash in optimal technical scheme
10%, sodium metasilicate 5%, surplus are filler.
In optimal technical scheme, the filler is kaolin or illite.Kaolin has strong acid resistance, so that
Arsenic pollution is not easy to rebound.Illite has preferable fungistatic effect, and being capable of arsenic-adsorbing.
The invention also discloses it is a kind of weigh it is above-mentioned for administering the preparation method of the passivator of high arsenic waste residue including following
Step: in ball after being prepared with other components according to weight percent after kaolin or illite are calcined one hour under 1200 degree
It is milled into 200 mesh or more in grinding machine, by grinding raw material and generating there is the new material of ground polymers characteristic as to be used to administer high arsenic
The passivator of waste residue.
The invention also discloses a kind of above-mentioned passivator application methods for being used to administer high arsenic waste residue, including following step
It is rapid: the passivator for being used to administer high arsenic waste residue is added to the weight ratio for accounting for high arsenic waste residue 3%-10% to be processed wait locate
It manages in high arsenic waste residue, is sufficiently mixed uniformly, it is 25-30% that moisture content is added water in mixed process, passes through the water of ground polymer material
Change polymerization, the arsenic of high arsenic waste residue can be effectively passivated after 72 hours, reaches the standard that safety enters landfill yard；Self-generating is high after 20 days
The liptinite of intensity.
Beneficial effects of the present invention: the passivator for being used to administer high arsenic waste residue of the invention, according to higher than with being prepared into
Molecularly Imprinted Polymer is added in high arsenic waste residue, and the arsenic in waste residue is induced, adsorb, reunite, ultimately form it is single, it is stable
Arsenic compound controls the migration of arsenic in waste residue.By triple role, realizes the stabilisation of arsenic slag, reach the mark into landfill yard
Standard, technical effect is better than traditional technology, and can reduce cost, reduces increase-volume ratio.
Since passivator material specific surface area of the invention is big, with pore structure and have high polymerizing power, with when
Between extension, can gradually generate the liptinite with bond strength, so stability is very strong, can for a long time effectively be not in
Arsenic pollution rebound phenomena.
Passivator of the invention using when additive amount of medicament only need to account for the weight ratio of high arsenic waste residue 3%-10% to be processed
, for the additive amount compared to traditional cement and lime base stabilization material etc. 20% or so, increase-volume is nearlyr by 50% than reducing.
Construction technology is simple, and construction site only needs to puddle and hydration process, not only simple but also environmentally friendly.
Specific embodiment
Embodiment one
5 parts of ferric sulfate, 10 parts of flyash, 5 parts of sodium metasilicate and 80 parts of kaolin are weighed according to weight ratio, kaolin is existed
Calcining is milled into 200 mesh or more after preparing after one hour with other components in the ball mill under 1200 degree, raw by grinding raw material
It is the passivator for being used to administer high arsenic waste residue at the new material with ground polymers characteristic.Cloud is added in the above-mentioned passivator made
South saves in mountain of papers arsenic slag mine in high arsenic waste residue to be processed, additive amount account for high arsenic waste residue weight to be processed 3%, 20 days after examine
Survey arsenic content.
Embodiment two
20 parts of ferrous sulfate, 30 parts of flyash, 10 parts of sodium metasilicate and 40 parts of illite are weighed according to weight ratio, by kaolin
It is milled into 200 mesh or more in the ball mill after preparing after calcining one hour under 1200 degree with other components, by grinding raw material
It is the passivator for being used to administer high arsenic waste residue that generating, which has the new material of ground polymers characteristic,.The above-mentioned passivator made is added
In Yunnan Province's mountain of papers arsenic slag mine in high arsenic waste residue to be processed, additive amount accounts for the 10% of high arsenic waste residue weight to be processed, and 20 days
After detect arsenic content.
Embodiment three
15 parts of ferric sulfate, 10 parts of flyash, 5 parts of sodium metasilicate and 70 parts of illite are weighed according to weight ratio, kaolin is existed
Calcining is milled into 200 mesh or more after preparing after one hour with other components in the ball mill under 1200 degree, raw by grinding raw material
It is the passivator for being used to administer high arsenic waste residue at the new material with ground polymers characteristic.Cloud is added in the above-mentioned passivator made
South saves in mountain of papers arsenic slag mine in high arsenic waste residue to be processed, additive amount account for high arsenic waste residue weight to be processed 6%, 20 days after examine
Survey arsenic content.
Example IV
5 parts of ferrous sulfate, 10 parts of flyash, 10 parts of sodium metasilicate and 65 parts of kaolin are weighed according to weight ratio, by kaolin
It is milled into 200 mesh or more in the ball mill after preparing after calcining one hour under 1200 degree with other components, by grinding raw material
It is the passivator for being used to administer high arsenic waste residue that generating, which has the new material of ground polymers characteristic,.The above-mentioned passivator made is added
In Yunnan Province's mountain of papers arsenic slag mine in high arsenic waste residue to be processed, after additive amount accounts for the 8%, 20 days of high arsenic waste residue weight to be processed
Detect arsenic content.
Embodiment five
5 parts of ferrous sulfate, 10 parts of flyash, 10 parts of sodium metasilicate and 65 parts of illite are weighed according to weight ratio, by kaolin
It is milled into 200 mesh or more in the ball mill after preparing after calcining one hour under 1200 degree with other components, by grinding raw material
It is the passivator for being used to administer high arsenic waste residue that generating, which has the new material of ground polymers characteristic,.The above-mentioned passivator made is added
In Yunnan Province's mountain of papers arsenic slag mine in high arsenic waste residue to be processed, after additive amount accounts for the 8%, 20 days of high arsenic waste residue weight to be processed
Detect arsenic content.
Embodiment six
13 parts of ferric sulfate, 8 parts of flyash, 8 parts of sodium metasilicate and 71 parts of kaolin are weighed according to weight ratio, kaolin is existed
Calcining is milled into 200 mesh or more after preparing after one hour with other components in the ball mill under 1200 degree, raw by grinding raw material
It is the passivator for being used to administer high arsenic waste residue at the new material with ground polymers characteristic.Cloud is added in the above-mentioned passivator made
South saves in mountain of papers arsenic slag mine in high arsenic waste residue to be processed, additive amount account for high arsenic waste residue weight to be processed 6%, 20 days after examine
Survey arsenic content.
Embodiment seven
18 parts of ferric sulfate, 12 parts of flyash, 10 parts of sodium metasilicate and 60 parts of illite are weighed according to weight ratio, kaolin is existed
Calcining is milled into 200 mesh or more after preparing after one hour with other components in the ball mill under 1200 degree, raw by grinding raw material
It is the passivator for being used to administer high arsenic waste residue at the new material with ground polymers characteristic.Cloud is added in the above-mentioned passivator made
South saves in mountain of papers arsenic slag mine in high arsenic waste residue to be processed, additive amount account for high arsenic waste residue weight to be processed 5%, 20 days after examine
Survey arsenic content.
It is as shown in the table that the solid waste of each embodiment administers result:
Yunnan Province's mountain of papers arsenic slag mine solid waste administers list
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (6)
1. a kind of for administering the passivator of high arsenic waste residue, it is characterised in that by weight percentage include following components: ferric sulfate
Or ferrous sulfate 5-20%, flyash 10-30%, sodium metasilicate 5-10%, surplus are filler.
2. according to claim 1 for administering the passivator of high arsenic waste residue, it is characterised in that include by weight percentage
Following components: ferric sulfate or ferrous sulfate 13-18%, flyash 8-12%, sodium metasilicate 5-8%, surplus are filler.
3. according to claim 2 for administering the passivator of high arsenic waste residue, it is characterised in that include by weight percentage
Following components: ferric sulfate or ferrous sulfate 15%, flyash 10%, sodium metasilicate 5%, surplus are filler.
4. according to claim 1 for administering the passivator of high arsenic waste residue, it is characterised in that: the filler is kaolinite
Soil or illite.
5. a kind of as claimed in claim 4 for administering the preparation method of the passivator of high arsenic waste residue, it is characterised in that including with
Lower step: after being prepared with other components according to weight percent after kaolin or illite are calcined one hour under 1200 degree
It is milled into 200 mesh or more in ball mill, is to be used to administer height by grinding raw material to generate the new material with ground polymers characteristic
The passivator of arsenic waste residue.
6. a kind of claim 1-4 is described in any item for administering the passivator application method of high arsenic waste residue, it is characterised in that
The following steps are included: the passivator for being used to administer high arsenic waste residue to be accounted for the weight ratio of high arsenic waste residue 3%-10% to be processed
It is added in high arsenic waste residue to be processed, is sufficiently mixed uniformly, it is 25-30% that moisture content is added water in mixed process, is gathered by ground
The aquation of object material polymerize, and the arsenic of high arsenic waste residue can be effectively passivated after 72 hours, reaches the standard that safety enters landfill yard；20 days
The liptinite of self-generating high intensity afterwards.
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Cited By (1)
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Address after: No. 138, floor 14, unit 2, building 13, No. 11, Changchun Road, high tech Industrial Development Zone, Zhengzhou City, Henan Province Applicant after: Henan Chuanping Environmental Protection Technology Co., Ltd. Address before: 450000 Tianhong Building, No. 27 Shunhe Road, Jinshui District, Zhengzhou City, Henan Province Applicant before: Henan Chuanping Environmental Protection Technology Co., Ltd. |
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Application publication date: 20190628 |