CN107935143A - Inorganic coagulant and preparation method thereof - Google Patents

Inorganic coagulant and preparation method thereof Download PDF

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Publication number
CN107935143A
CN107935143A CN201711262823.1A CN201711262823A CN107935143A CN 107935143 A CN107935143 A CN 107935143A CN 201711262823 A CN201711262823 A CN 201711262823A CN 107935143 A CN107935143 A CN 107935143A
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CN
China
Prior art keywords
preparation
flyash
slag
supernatant
filter residue
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Pending
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CN201711262823.1A
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Chinese (zh)
Inventor
田颖
王雨
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Baotou Iron and Steel Group Co Ltd
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Baotou Iron and Steel Group Co Ltd
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Priority to CN201711262823.1A priority Critical patent/CN107935143A/en
Publication of CN107935143A publication Critical patent/CN107935143A/en
Pending legal-status Critical Current

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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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates
    • 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
    • C02F2101/30—Organic compounds
    • C02F2101/32—Hydrocarbons, e.g. oil
    • C02F2101/327—Polyaromatic Hydrocarbons [PAH's]
    • 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
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C02F2101/345—Phenols
    • 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
    • C02F2101/30—Organic compounds
    • C02F2101/38—Organic compounds containing nitrogen

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  • Chemical & Material Sciences (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)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The present invention proposes a kind of inorganic coagulant and preparation method thereof, and primary raw material includes slag and flyash, wherein, the mass ratio of the slag and the flyash is 8:2, preparation method mainly includes the following steps：Pre-treatment of raw material, acidification, basification, mixing and drying.By technical scheme, substantial amounts of solid waste is make use of, protects environment, expands raw material sources, reduces material cost；And pass through acidification and basification, obtain multi-component molysite, the coagulant of aluminium salt mixing, two kinds of respective advantages of coagulant are given full play to, improve flocculating effect, and there is stronger adsorption capacity, so as to possess preferable removal effect to harmful substances such as colourity, macromolecular organic compound, heavy metal ion.

Description

Inorganic coagulant and preparation method thereof
Technical field
The present invention relates to environmental protection technical field, in particular to a kind of inorganic coagulant and preparation method thereof.
Background technology
Coagulant is exactly that colloidal particles in water mutually can be bonded and flocked together in water treatment procedure Material, usual coagulant are divided into two major class of organic coagulants and inorganic coagulant.The process of coagulation is exactly the process in water process Middle addition medicament, makes impurity produce cohesion, flocculated process.It is mainly used for purification and the Industrial Wastewater Treatment of Drinking Water.
At present, water treatment inorganic coagulant is mainly aluminium salt, iron salt coagulant, and important work is played in sewage disposal With.Such as widely applied aluminium polychloride (PAC) and poly-ferric chloride (PFC), it is generally with raw material such as aluminium hydroxide, alumina Prepared, cost is higher.In addition, removal of this kind of coagulant for colourity, organic high molecular compound in waste water at present is imitated Fruit is general, particularly with heavy metal ion such as Pb, Cr6+Deng removal effect it is undesirable.
The content of the invention
It is contemplated that at least solve one of technical problem present in the prior art or correlation technique.
In view of this, it is an object of the invention to provide a kind of inorganic coagulant and preparation method thereof, using industrial Solid waste coal ash and slag are primary raw material, to reduce cost, and utilize the ferro element and flyash enriched in slag In enrich aluminium element, the inorganic coagulant for possessing stronger adsorption capacity is prepared after multiple working procedure, it is inorganic to improve Coagulant removes organic high molecular compound, the ability of heavy metal ion.
To achieve these goals, the technical solution of first aspect present invention provides a kind of inorganic coagulant, main former Material includes slag and flyash, wherein, the mass ratio of the slag and the flyash is 8:2.
In the technical scheme, can be with by using the slag as trade waste and flyash as primary raw material Cost is greatly reduced, and realizes the purpose to turn waste into wealth, improves the feature of environmental protection of the technical program.In addition, F in slag2O3Content Usually 35%~40%, alumina content is usually 20%~35% in flyash, reaches as high as 50%, by using richness The raw material of iron content, the slag of aluminium and flyash as inorganic coagulant, made inorganic coagulant delivery turbidity are low；Coagulation shape Into alumen ustum it is fast, big, settling property is good；For colourity, organic high molecular compound (such as phenol, aniline, benzoin in waste water Deng) removal effect is notable；For heavy metal ion (such as Pb, Cr6+Deng) there is good removal effect.
The technical solution of second aspect of the present invention provides the preparation method of above-mentioned inorganic coagulant, includes the following steps：
1) pre-treatment of raw material：Slag and flyash are crushed respectively, ground, after 100 mesh sieves excessively, is placed in baking oven and dries It is dry；
2) acidification：Weigh respectively drying after slag and flyash, be placed in container after add hydrochloric acid solution stirring, Stand, filtering, obtain sour supernatant A and filter residue A；
3) basification：Sodium hydroxide solution stirring is added in filter residue A, is stood, filtering, obtains alkali supernatant B and filter residue B；
4) that filter residue B is put into drying in oven is spare；
5) sour supernatant A and alkali supernatant B are mixed, stirs evenly, then stand；
6) mixed liquor after standing on the heaters heating evaporation to paste, be then put into drying in oven obtain it is powdered Solid C；
7) filter residue B is mixed with pulverulent solids C, obtains a kind of inorganic coagulant for possessing adsorption capacity.
According to the preparation method of above-mentioned technical proposal, the concentration of hydrochloric acid solution in step 2) is 2mol/L, during the stirring Between be 1.0h, whipping temp is 40 DEG C, and the time of repose is 24h.
According to the preparation method of above-mentioned technical proposal, the concentration of sodium hydroxide solution in step 3) is 4mol/L, described to stir It is 1.0h to mix the time, and whipping temp is 80 DEG C, and the time of repose is 24h.
According to the preparation method of above-mentioned technical proposal, the baking oven design temperature in step 4) is 100 DEG C.
According to the preparation method of above-mentioned technical proposal, sour supernatant A in step 5) and alkali supernatant B is mixed stirs It is 0.5h to mix the time, and whipping temp is 80 DEG C, time of repose 12h.
The preparation method of Pass through above-mentioned technical proposal, using slag as primary raw material, while adds flyash to supplement aluminium member Element.
Ferro element in acidified processing extraction slag, makes ferro element and hydrochloric acid react Mr.'s hydrochloric acid iron precipitation, afterwards Aluminium element dissolution is into sour supernatant A；And aluminium element is still in the form of aluminum chlorhydrate in filter residue A, at this time then using alkalization Processing, the aluminium element in filter residue A is extracted, alkali supernatant B is obtained by filtration, and sour supernatant A and alkali supernatant B are mixed, The ferro element in mixed liquor and aluminium element is fully polymerize, then pass through mixed liquor heating evaporation to paste, obtained after dry Powder obtains the inorganic coagulant with adsorption capacity after being mixed with filter residue B.
The additional aspect and advantage of the present invention will become obvious in following description section, or the practice by the present invention Recognize.
Brief description of the drawings
Fig. 1 shows flow chart according to an embodiment of the invention.
Embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, with reference to embodiment The present invention is further described in detail.It should be noted that in the case where there is no conflict, embodiments herein and reality Applying the feature in example can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also To be implemented using other different from other modes described here, therefore, protection scope of the present invention and from described below Specific embodiment limitation.
As shown in Figure 1, inorganic coagulant of one embodiment proposed according to the present invention and preparation method thereof, including it is as follows Step：
Step 10：Pre-treatment of raw material：Slag and flyash are crushed respectively, ground, after 100 mesh sieves excessively, is placed in baking oven In dried at 100 DEG C；
Using slag and flyash as primary raw material, one side slag and flyash are cheap, and cost can be greatly reduced； Another aspect slag is rich in ferro element, and flyash is rich in aluminium element so that the coagulant of preparation can be in structure better than single Aluminium salt or iron salt coagulant；And due to being various ingredients addition, allocating together, caused effect is independent better than each component Using when the summation that acts on.Therefore, prepared ferroaluminium composite coagulant can give full play to two kinds of respective advantages of coagulant, carry High flocculating effect, and can further be lifted on settling property；
Step 12：Acidification：Pretreated slag 80g and flyash 20g are taken, is placed in three-necked flask, is added The hydrochloric acid solution 400ml of 2mol/L, 1h is stirred at 40 DEG C, stands 24h, with filter-cloth filtering, obtains sour supernatant A and filter residue A；
By acidification, make a large amount of dissolutions of aluminium, ferro element in slag and flyash, efficient can utilize money Source, turns waste into wealth, and preferably protects environment；
Step 14：Basification：Filter residue A is placed in three-necked flask, adds the sodium hydroxide solution 200ml of 4mol/L, 1h is stirred at 80 DEG C, stands 24h, with filter-cloth filtering, obtains alkali supernatant B and filter residue B；
By basification, make a large amount of dissolutions of aluminium, ferro element in slag and flyash, efficient can utilize money Source, turns waste into wealth, and preferably protects environment；
Step 16：Filter residue B is put into baking oven, is dried for standby at 100 DEG C；
Step 18：Sour supernatant A and alkali supernatant B are mixed, 0.5h is stirred at 80 DEG C, stands 12h；
Step 20：Heating evaporation to paste, is then put into baking oven at 100 DEG C to mixed liquor after standing on the heaters Drying obtains pulverulent solids C；
Step 22：Filter residue B is mixed with pulverulent solids C, obtains a kind of inorganic coagulant for possessing adsorption capacity.
Handled by the preparation method of above-mentioned steps, while to slag and flyash, obtain being provided simultaneously with molysite, aluminium The coagulant of salt functional group, its coagulation effect are higher than independent aluminium salt or molysite；And the multi-cellular structure of the filter residue after handling is consolidated Body characteristics are obvious, possess good adsorption capacity, and delivery turbidity is low；The alumen ustum that coagulation is formed is soon, big, settling property is good； It is notable for the colourity in waste water, organic high molecular compound removal effect；For heavy metal ion there is good removal to imitate Fruit.
Slag and flyash as primary raw material derive from a wealth of sources, and use cost is relatively low, and simple production process is easy, Economy, is applicable in, easy to the mass production of the inorganic coagulant of the present embodiment.
Technical scheme has been described in detail above, by technical scheme, using slag and flyash As the primary raw material of inorganic coagulant, substantial amounts of solid waste is make use of, protects environment, expand raw material sources, dropped Low material cost；And by acidification and basification, multi-component molysite, the coagulant of aluminium salt mixing are obtained, is filled Two kinds of respective advantages of coagulant have been waved in distribution, improve flocculating effect, and have stronger adsorption capacity, thus to colourity, The harmful substances such as macromolecular organic compound, heavy metal ion possess preferable removal effect.
In the present invention, term " first ", " second ", " the 3rd " are only used for the purpose described, and it is not intended that instruction Or imply relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " installation ", The term such as " connected ", " connection ", " fixation " should all be interpreted broadly, for example, " connection " can be fixedly connected or can Dismantling connection, or be integrally connected；" connected " can be directly connected, and can also be indirectly connected by intermediary.For this For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In description of the invention, it is to be understood that the instruction such as term " on ", " under ", "left", "right", "front", "rear" Orientation or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplification is retouched State, rather than instruction or imply signified device or unit there must be specific direction, with specific azimuth configuration and operation, It is thus impossible to it is interpreted as limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean to combine at least one reality that the particular features, structures, materials, or characteristics that the embodiment or example describe are contained in the present invention Apply in example or example.In the present specification, schematic expression of the above terms is not necessarily referring to identical embodiment or reality Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more embodiments or example with Suitable mode combines.
It these are only the preferred embodiment of the present invention, be not intended to limit the invention, for those skilled in the art For member, the invention may be variously modified and varied.Any modification within the spirit and principles of the invention, being made, Equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.

Claims (6)

  1. A kind of 1. inorganic coagulant, it is characterised in that primary raw material includes slag and flyash, wherein, the slag with it is described The mass ratio of flyash is 8:2.
  2. A kind of 2. preparation method of the inorganic coagulant described in claim 1, it is characterised in that including：
    1) pre-treatment of raw material：Slag and flyash are crushed respectively, ground, after 100 mesh sieves excessively, is placed in baking oven and dries；
    2) acidification：The slag and flyash after drying are weighed respectively, and adding hydrochloric acid solution after being placed in container stirs, is quiet Put, filter, obtain sour supernatant A and filter residue A；
    3) basification：Sodium hydroxide solution stirring is added in filter residue A, is stood, filtering, obtains alkali supernatant B and filter residue B；
    4) that filter residue B is put into drying in oven is spare；
    5) sour supernatant A and alkali supernatant B are mixed, stirs evenly, then stand；
    6) heating evaporation to paste, is then put into drying in oven and obtains pulverulent solids the mixed liquor after standing on the heaters C。
    7) filter residue B is mixed with pulverulent solids C, obtains a kind of inorganic coagulant for possessing adsorption capacity.
  3. 3. preparation method according to claim 2, it is characterised in that the concentration of hydrochloric acid solution in the step 2) is 2mol/L, the mixing time are 1.0h, and whipping temp is 40 DEG C, and the time of repose is 24h.
  4. 4. preparation method according to claim 2, it is characterised in that the concentration of sodium hydroxide solution in the step 3) is 4mol/L, the mixing time are 1.0h, and whipping temp is 80 DEG C, and the time of repose is 24h.
  5. 5. preparation method according to claim 2, it is characterised in that the baking oven design temperature in the step 4) is 100 ℃。
  6. 6. preparation method according to claim 2, it is characterised in that sour supernatant A and alkali supernatant in the step 5) The mixed mixings time of liquid B are 0.5h, and whipping temp is 80 DEG C, time of repose 12h.
CN201711262823.1A 2017-12-04 2017-12-04 Inorganic coagulant and preparation method thereof Pending CN107935143A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108773882A (en) * 2018-06-26 2018-11-09 清华大学深圳研究生院 A kind of Inorganic complex coagulant and its preparation method and application
CN109012641A (en) * 2018-08-29 2018-12-18 宝钢湛江钢铁有限公司 A kind of preparation method of modified steel scoria heavy metal absorbent
CN109319896A (en) * 2018-11-05 2019-02-12 攀枝花学院 The method for preparing flocculant with flyash and vanadium titano-magnetite
CN109368752A (en) * 2018-10-26 2019-02-22 昆明理工大学 It is a kind of for handling the preparation method of the flocculant of organic wastewater
CN112591843A (en) * 2020-12-26 2021-04-02 昆明理工大学 Method for treating heavy metal-containing acidic wastewater by using waste

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1398831A (en) * 1972-05-12 1975-06-25 Shin Jen Shiad Activated red mud and its preparing method
BRPI0400047A (en) * 2004-01-15 2005-09-13 Carbonifera Criciuma S A Process for the manufacture of ferric coagulant from acid drainage of coal mine and its coagulant
CN101239721A (en) * 2007-02-08 2008-08-13 朱成林 Method for preparing polysilicon ferric sulfate water purifying agent from steel slag and water slag
CN101445286A (en) * 2008-12-26 2009-06-03 南京师范大学 Method for producing water treatment agent polyaluminium chloride from industrial waste residues
CN102153097A (en) * 2011-02-25 2011-08-17 抚顺矿业集团有限责任公司 Method for preparing polysilicate aluminium ferric flocculant, aluminium sulphate and sodium metasilicate pentahydrate by co-generation on oil shale waste residues
CN103382044A (en) * 2013-06-19 2013-11-06 宫惠峰 Method of preparing compound flocculating agent by utilizing fly ash and killing pickle
CN103991940A (en) * 2011-03-29 2014-08-20 济宁医学院 Process for preparing hybrid flocculant from fly ash
CN105692831A (en) * 2016-02-26 2016-06-22 武汉理工大学 Efficient slag-based inorganic phosphorous removal flocculating agent and preparation method thereof
CN105836864A (en) * 2016-05-30 2016-08-10 江西旭锂矿业有限公司 Method of using lithium-extracted waste residue to prepare polymerized aluminum calcium chloride water purifying agent
CN106315603A (en) * 2016-08-04 2017-01-11 广东紫方环保技术有限公司 Preparation method of polymeric aluminum ferric silicate
CN107032466A (en) * 2017-05-25 2017-08-11 北京中矿东方矿业有限公司 A kind of ferric sulfate of polymerized silica aluminium water purifying agent production method

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1398831A (en) * 1972-05-12 1975-06-25 Shin Jen Shiad Activated red mud and its preparing method
BRPI0400047A (en) * 2004-01-15 2005-09-13 Carbonifera Criciuma S A Process for the manufacture of ferric coagulant from acid drainage of coal mine and its coagulant
CN101239721A (en) * 2007-02-08 2008-08-13 朱成林 Method for preparing polysilicon ferric sulfate water purifying agent from steel slag and water slag
CN101445286A (en) * 2008-12-26 2009-06-03 南京师范大学 Method for producing water treatment agent polyaluminium chloride from industrial waste residues
CN102153097A (en) * 2011-02-25 2011-08-17 抚顺矿业集团有限责任公司 Method for preparing polysilicate aluminium ferric flocculant, aluminium sulphate and sodium metasilicate pentahydrate by co-generation on oil shale waste residues
CN103991940A (en) * 2011-03-29 2014-08-20 济宁医学院 Process for preparing hybrid flocculant from fly ash
CN103382044A (en) * 2013-06-19 2013-11-06 宫惠峰 Method of preparing compound flocculating agent by utilizing fly ash and killing pickle
CN105692831A (en) * 2016-02-26 2016-06-22 武汉理工大学 Efficient slag-based inorganic phosphorous removal flocculating agent and preparation method thereof
CN105836864A (en) * 2016-05-30 2016-08-10 江西旭锂矿业有限公司 Method of using lithium-extracted waste residue to prepare polymerized aluminum calcium chloride water purifying agent
CN106315603A (en) * 2016-08-04 2017-01-11 广东紫方环保技术有限公司 Preparation method of polymeric aluminum ferric silicate
CN107032466A (en) * 2017-05-25 2017-08-11 北京中矿东方矿业有限公司 A kind of ferric sulfate of polymerized silica aluminium water purifying agent production method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李灿华等: "《钢渣处理及资源化利用技术》", 30 June 2016, 中国地质大学出版社 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108773882A (en) * 2018-06-26 2018-11-09 清华大学深圳研究生院 A kind of Inorganic complex coagulant and its preparation method and application
CN108773882B (en) * 2018-06-26 2021-05-07 清华大学深圳研究生院 Inorganic composite coagulant and preparation method and application thereof
CN109012641A (en) * 2018-08-29 2018-12-18 宝钢湛江钢铁有限公司 A kind of preparation method of modified steel scoria heavy metal absorbent
CN109368752A (en) * 2018-10-26 2019-02-22 昆明理工大学 It is a kind of for handling the preparation method of the flocculant of organic wastewater
CN109319896A (en) * 2018-11-05 2019-02-12 攀枝花学院 The method for preparing flocculant with flyash and vanadium titano-magnetite
CN109319896B (en) * 2018-11-05 2021-08-24 攀枝花学院 Method for preparing flocculating agent from fly ash and vanadium-titanium magnetite
CN112591843A (en) * 2020-12-26 2021-04-02 昆明理工大学 Method for treating heavy metal-containing acidic wastewater by using waste

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Application publication date: 20180420