CN103896381B - A kind of method that waste liquid utilized in activated clay production prepares PAFC - Google Patents
A kind of method that waste liquid utilized in activated clay production prepares PAFC Download PDFInfo
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- CN103896381B CN103896381B CN201410140693.4A CN201410140693A CN103896381B CN 103896381 B CN103896381 B CN 103896381B CN 201410140693 A CN201410140693 A CN 201410140693A CN 103896381 B CN103896381 B CN 103896381B
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- mixed liquor
- waste liquid
- pafc
- calcium aluminate
- activated clay
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Abstract
The present invention relates to a kind of method that waste liquid utilized in activated clay production prepares PAFC, it is liquid and first time cleaning mixture mixing, then add quantitative calcium aluminate under heating uniform temperature to react, measure mixed liquor, place in synthesis pond, it is ensured that the ferro-aluminum content of mixed liquor and acidity, comprehensive synthesized polymer aluminium chloride ferrum again, the product of synthesis can reach the standard of technical grade aluminium polychlorid, it is possible to turns waste into wealth, and environmental protection is also practical.
Description
Technical field
The present invention relates to the field of production of water treatment agent, be specifically related to a kind of method that waste liquid utilized in activated clay production prepares PAFC.
Background technology
PAFC (PAFC) is to be hydrolyzed by aluminium salt and iron salt coagulation to form a kind of inorganic polymer coagulant, the new and effective coagulant of prepared one according to Synergistic principle, addition fe ion or ferric oxide and other iron containing compounds compound.
Its collection aluminium salt and iron salt each advantage, all have clear improvement to the form of aluminium ion and iron ion, and extent of polymerization greatly improves.Take aluminum, ferrum coagulant and each air supporting is operated benefit, improve the coagulation performance of aluminium polychlorid；The purified treatment effect of ultra and low temperature and low turbidity water is obvious especially, alkaline assistant or other flocculation aid can be not added with.
The method preparing high-efficient activated clay at present adopts the preparation technology of wet method, half wet process mostly.Water, acid and bentonite are mixed by a certain percentage in the reactor, after heating certain time under certain degree Celsius, then scrubbed, dry, the active hargil of pulverizing.Its acid consumption is big, and production cost is high, and process produces substantial amounts of acid waste water, it is necessary to alkaline matter neutralisation treatment, then discharges, and directly contributes contaminated environment.
The performance of active hargil and acid concentration height, amount size are relevant, report after deliberation, the active hargil performance that, amount high with acid concentration is produced greatly is more good, but process produces substantial amounts of spent acid and alite, it is difficult to process, contaminated environment, the pollution how solving waste acid water very well is to have problem to be solved.
The synthetic method of aluminium polychlorid has a variety of, according to raw-material difference, can be divided into metallic aluminium method, active aluminium hydroxide method, aluminium sesquioxide method, Alchlor process etc..But there is high in cost of production problem.
Summary of the invention
Present invention aims to the deficiencies in the prior art, a kind of method that waste liquid utilized in activated clay production prepares PAFC is provided, the waste acid water that can will produce in preparing active hargil process, all reclaim, comprehensively utilize, produce PAFC, be the production technology of a kind of pollution-free, environmental protection, and turn waste into wealth, there is good economic benefit, environmental benefit, social benefit.
The method that a kind of waste liquid utilized in activated clay production that the present invention relates to prepares PAFC, is characterized in that specifically including following steps:
1) measuring the mixed waste liquor of 1000ml, placement 2500ml is synthesized in pond, is heated by waste liquid, adds quantitative calcium aluminate and react, make the ferro-aluminum content of mixed liquor, basicity and pH value reach to a certain degree.
2) after adding calcium aluminate, continuing at maintenance 100 DEG C, stirring reaction 2～3h, synthesis liquid is delivered to finished product cleaner, after sedimentation, the supernatant is put into finished product device, be the polychloride ferro-aluminum fluid product of water treatment agent after terminating by reaction.
Waste liquid described in step 1) is heated to 80-90 DEG C.
Quantitative calcium aluminate described in step 1) refers to the calcium aluminate of 80～150g.
The ferro-aluminum content 6～12% of the mixed liquor described in step 1).
PH value 3～5% described in step 1).
Step 2) described in sedimentation be sedimentation 2～3 days.
Beneficial effects of the present invention effectively utilizes process spent acid, it is ensured that the ferro-aluminum content of mixed liquor and acidity, more comprehensive synthesized polymer aluminium chloride ferrum, and the product of synthesis can reach the standard of technical grade aluminium polychlorid, it is possible to turns waste into wealth, and environmental protection is also practical.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further details, but is not limitation of the present invention.
It is that example illustrates that embodiment chooses the high-quality bentonite of Tiandong County, City: A Case Study in Baise, by analysis the high-quality bentonite main component of Tiandong County, City: A Case Study in Baise: Fe2O36.99%Al2O318.09%TiO20.42%CaO0.42%SiO247.6%LoSS15%, is when preparing the solid-liquor separation of active hargil, adds pressure filter, separates liquid-solid through pressure filter filter pressing after acidifying.
Embodiment 1: a kind of method utilizing waste liquid in activated clay production to prepare PAFC, specifically include below step: 1) after collection prepares the waste liquid of active hargil and the mixing of once washing liquid, analyze main component: ferro-aluminum 3.6%(aluminium oxide meter), acidity 7.5%, measures the mixed liquor of 1000ml, and placement 2500ml is synthesized in pond, limit is stirred, and heat to 85 DEG C, it is slowly added to the calcium aluminate powder of 130g, predominant amount: Fe2O35.85%Al2O348.09%TiO20.42%CaO32.52%SiO27.6%, after having added calcium aluminate, continue heating and be incubated two hours at 100 DEG C, transferring to cooling precipitation in depositor, supernatant is transferred to finished product device, analyzes supernatant composition and content, it is mainly ferro-aluminum total content 10.02%(aluminium oxide meter), basicity 86.30%, pH value 4%.
2) after adding calcium aluminate, continuing at maintenance 100 DEG C, stirring reaction 2～3h, synthesis liquid is delivered to finished product cleaner, after settling 3 days, the supernatant is put into finished product device, be the polychloride ferro-aluminum fluid product of water treatment agent after terminating by reaction.
The comparison of finished product and GB GB/15892-20008:
Embodiment 2: a kind of method utilizing waste liquid in activated clay production to prepare PAFC, specifically includes below step:
1) after waste liquid and the mixing of once washing liquid of active hargil are prepared in collection, analyze main component: ferro-aluminum 3.6%(aluminium oxide meter), acidity 7.5%, measure the mixed liquor of 1000ml, placement 2500ml is synthesized in pond, and limit is stirred, and heats to 80 DEG C, it is slowly added to the calcium aluminate powder of 80g～150g, predominant amount: Fe2O35.85%Al2O348.09%TiO20.42%CaO32.52%SiO27.6%, after having added calcium aluminate, continue heating and be incubated two hours at 100 DEG C, transferring in depositor and cool down, supernatant is transferred to finished product device, analyzes supernatant composition and content, it is mainly ferro-aluminum total content 10.02%(aluminium oxide meter), basicity 86.30%, pH value is 4%.
2) after adding calcium aluminate, continuing at maintenance 100 DEG C, stir 2～3h, synthesis liquid is delivered to finished product cleaner, after settling 3 days, the supernatant is put into finished product device, be the polychloride ferro-aluminum fluid product of water treatment agent after terminating by reaction.
The comparison of finished product and GB GB/15892-20008:
| GB GB/15892-2008 | Synthetic fluid product | |
| Color | White or yellow | Khaki |
| Aluminum content (aluminium oxide meter) | Liquid 6.0 | 10.02 |
| Basicity | 40—90 | 86.30 |
Embodiment 3 one kinds utilizes the method that waste liquid in activated clay production prepares PAFC, specifically include below step: 1) after collection prepares the waste liquid of active hargil and the mixing of once washing liquid, analyze main component: ferro-aluminum 3.6%(aluminium oxide meter), acidity 7.5%, measures the mixed liquor of 1000ml, and placement 2500ml is synthesized in pond, limit is stirred, and heat to 90 DEG C, it is slowly added to the calcium aluminate powder of 150g, predominant amount: Fe2O35.85%Al2O348.09%TiO20.42%CaO32.52%SiO27.6%, after having added calcium aluminate, continue heating and be incubated two hours at 100 DEG C, transferring in depositor and cool down, supernatant is transferred to finished product device, analyzes supernatant composition and content, it is mainly ferro-aluminum total content 10.02%(aluminium oxide meter), basicity 86.30%, pH value 4%
2) after adding calcium aluminate, continuing at maintenance 100 DEG C, stir 2～3h, synthesis liquid is delivered to finished product cleaner, after settling 3 days, the supernatant is put into finished product device, be the polychloride ferro-aluminum fluid product of water treatment agent after terminating by reaction.
The comparison of finished product and GB GB/15892-20008:
| GB GB/15892-2008 | Synthetic fluid product | |
| Color | White or yellow | Khaki |
| Aluminum content (aluminium oxide meter) | Liquid 6.0 | 10.02 |
| Basicity | 40—90 | 86.30 |
Claims (2)
1. the method utilizing the waste liquid in activated clay production to prepare PAFC, is characterized in that specifically including following steps:
1) preparing waste liquid and the mixing of once washing liquid of active hargil, and measure the mixed liquor of 1000ml, placement 2500ml is synthesized in pond, mixed liquor is heated, described mixed liquor is heated to 80～90 DEG C, and the calcium aluminate powder adding 80～150g reacts, and calcium aluminate powder predominant amount is: Fe2O35.85%, Al2O348.09%, TiO20.42%, CaO32.52%, SiO27.6%, make the ferro-aluminum content of mixed liquor and pH value reach to a certain degree, the ferro-aluminum content of described mixed liquor is calculated as 6～12% with aluminium oxide, and described pH value is 3～5；
2) after adding calcium aluminate powder, continuing heating to 100 DEG C, stir 2～3h, synthesis liquid is delivered to finished product cleaner, after sedimentation, the supernatant is put into finished product device, be water treatment agent polyaluminium chloride fluid product after terminating by reaction.
2. the method that a kind of waste liquid utilized in activated clay production according to claim 1 prepares PAFC, it is characterised in that: step 2) described in sedimentation be sedimentation 2～3 days.
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| CN103896381B true CN103896381B (en) | 2016-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104925824B (en) * | 2015-06-11 | 2017-09-29 | 何经 | A kind of production method of atlapulgite |
| CN106430321B (en) * | 2016-08-31 | 2018-03-23 | 海南宜净环保股份有限公司 | Method for synthesizing polyaluminum ferric chloride |
| CN106745968B (en) * | 2016-12-05 | 2020-08-04 | 百色学院 | Method for treating micro-polluted water |
| CN109110958A (en) * | 2018-08-30 | 2019-01-01 | 黄山市白岳活性白土有限公司 | A kind of hydrochloric acid production atlapulgite waste water treatment process |
| CN115108572A (en) * | 2022-04-18 | 2022-09-27 | 重庆市宇洁化工有限公司 | Polyaluminium chloride production method suitable for purifying various water qualities |
Citations (3)
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|---|---|---|---|---|
| CN1463929A (en) * | 2002-06-06 | 2003-12-31 | 曹万印 | Process for producing composite coagulant polymeric aluminium chloride ferrum |
| CN101215032A (en) * | 2008-01-21 | 2008-07-09 | 合肥工业大学 | Method for producing inorganic macromolecule flocculant polymerization iron aluminum chloride |
| CN101602517A (en) * | 2009-07-08 | 2009-12-16 | 东莞市华清净水技术有限公司 | A kind for the treatment of agent for molten polyaluminium ferric chloride and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002086160A (en) * | 2000-09-18 | 2002-03-26 | Takuma Co Ltd | Treatment method of fluorine-containing waste water |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1463929A (en) * | 2002-06-06 | 2003-12-31 | 曹万印 | Process for producing composite coagulant polymeric aluminium chloride ferrum |
| CN101215032A (en) * | 2008-01-21 | 2008-07-09 | 合肥工业大学 | Method for producing inorganic macromolecule flocculant polymerization iron aluminum chloride |
| CN101602517A (en) * | 2009-07-08 | 2009-12-16 | 东莞市华清净水技术有限公司 | A kind for the treatment of agent for molten polyaluminium ferric chloride and preparation method thereof |
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