CN103896381A - Method for preparing polyaluminum ferric chloride from waste liquid in activated clay production - Google Patents
Method for preparing polyaluminum ferric chloride from waste liquid in activated clay production Download PDFInfo
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- CN103896381A CN103896381A CN201410140693.4A CN201410140693A CN103896381A CN 103896381 A CN103896381 A CN 103896381A CN 201410140693 A CN201410140693 A CN 201410140693A CN 103896381 A CN103896381 A CN 103896381A
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Abstract
The invention relates to a method for preparing polyaluminum ferric chloride from a waste liquid in activated clay production. The method comprises the following steps: mixing the liquid with a primary scrubbing solution, subsequently heating, adding a certain amount of calcium aluminate at a certain temperature for reaction, weighing the mixture liquid, putting into a synthesis pond, ensuring the content and the acidity of the ferro-aluminum in the mixture liquid, and further comprehensively synthesizing the polyaluminum ferric chloride. A synthesized product can meet the standard of industrial polyaluminum ferric chloride, the waste can be turned into wealth, and the method is environment-friendly and practical.
Description
technical field
The present invention relates to the field of production of water conditioner, be specifically related to a kind of method of utilizing waste liquid in activated clay production to prepare aluminium iron polychloride.
Background technology
Aluminium iron polychloride (PAFC) is to form a kind of inorganic polymer coagulant by aluminium salt and the hydrolysis of molysite coagulation, according to synergy principle, adds fe ion or Indian red and the new and effective coagulating agent of other iron containing compounds one compound and that make.
Its collection aluminium salt and molysite advantage separately, all has clear improvement to the form of aluminum ion and iron ion, and extent of polymerization greatly improves.Get aluminium, iron coagulating agent operates favourable part to air supporting separately, improves the coagulation performance of polymerize aluminum chloride; Purifying treatment effect to ultra and low temperature and low turbidity water is obvious especially, can not add alkaline assistant or other coagulant aids.
The method of preparing at present high-efficient activated clay adopts the preparation technology of wet method, semi-wet method mostly.Water, acid and wilkinite are mixed by a certain percentage in reactor, under certain degree Celsius, heat after certain hour, then through washing, dry the atlapulgite of pulverizing.Its acid consumption is large, and production cost is high, and process produces a large amount of acid waste water, needs alkaline matter neutralizing treatment, then discharges, and directly pollutes environment.
The performance of atlapulgite and acid concentration height, amount size are relevant, report after deliberation, atlapulgite performance high with acid concentration, that amount is produced is greatly better, but process produces a large amount of spent acid and alite, be difficult to process, contaminate environment, how the pollution of fine solution waste acid water is to have problem to be solved.
The synthetic method of polymerize aluminum chloride has a variety of, according to raw-material difference, can be divided into metallic aluminium method, active aluminium hydroxide method, aluminium sesquioxide method, aluminium chloride process etc.But there is high in cost of production problem.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of method of utilizing waste liquid in activated clay production to prepare aluminium iron polychloride is provided, can be by preparing the waste acid water producing in atlapulgite process, all reclaim, fully utilizing, produce aluminium iron polychloride, is a kind of production technique of pollution-free, environmental protection, and turn waste into wealth, there is good economic benefit, environmental benefit, social benefit.
A kind of method of utilizing waste liquid in activated clay production to prepare aluminium iron polychloride the present invention relates to, is characterized in that specifically comprising the following steps:
1) measure the mixed waste liquor of 1000ml, place in the synthetic pond of reaction of 2500ml, by waste liquid heating, then add quantitative calcium aluminate to react, ferro-aluminum content, basicity and the pH value of mixed solution are acquired a certain degree.
2) add after calcium aluminate, at continuation keeps 100 DEG C, stirring reaction 2～3h, after reaction finishes, will synthesize liquid and deliver to finished product cleaner, after sedimentation, supernatant liquid be put into finished product device, be water conditioner poly aluminium chloride iron liquid product.
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 solution described in step 1).
PH value 3～5% described in step 1).
Step 2) described sedimentation is sedimentation 2～3 days.
Beneficial effect of the present invention effectively utilizes processing spent acid, ensures ferro-aluminum content and the acidity of mixed solution, more comprehensive synthesized polymer aluminium chloride ferrum, and synthetic product can reach the standard of technical grade polymerize aluminum chloride, can turn waste into wealth, and environmental protection is also practical.
Embodiment
Below in conjunction with embodiment, the present invention is described in further details, but is not limitation of the present invention.
The high-quality wilkinite that embodiment chooses Tiandong County, City: A Case Study in Baise is that example describes, by analysis the high-quality wilkinite main component of Tiandong County, City: A Case Study in Baise: Fe
2o
36.99% Al
2o
318.09% TiO
20.42% CaO 0.42% SiO
247.6% LoSS 15%, is in the time of the liquid-solid separation of preparing atlapulgite, adds pressure filter, after acidifying, separates liquid-solid through pressure filter press filtration.
Embodiment 1: a kind of method of utilizing waste liquid in activated clay production to prepare aluminium iron polychloride, specifically comprise the following steps: 1) collect after the waste liquid and the mixing of once washing liquid of preparing atlapulgite, analyze main component: ferro-aluminum 3.6%(aluminum oxide meter), acidity 7.5%, measures the mixed solution of 1000ml, places in the synthetic pond of reaction of 2500ml, stir on limit, and be heated to 85 DEG C, slowly add the calcium aluminate powder of 130g, main content: Fe
2o
35.85% Al
2o
348.09% TiO
20.42% CaO 32.52% SiO
27.6%, add after calcium aluminate, continue heating and be incubated two hours at 100 DEG C, transfer to cooling precipitation in settling vessel, supernatant liquor is transferred to finished product device, analyzes supernatant liquor composition and content, be mainly ferro-aluminum total content 10.02%(aluminum oxide meter), basicity 86.30%, pH value 4%.
2) add after calcium aluminate, at continuation keeps 100 DEG C, stirring reaction 2～3h, after reaction finishes, will synthesize liquid and deliver to finished product cleaner, and sedimentation, after 3 days, is put into finished product device by supernatant liquid, is water conditioner poly aluminium chloride iron liquid product.
The comparison of finished product and GB GB/15892-20008:
| ? | GB GB/15892-2008 | Synthetic fluid product |
| Color | White or yellow | Khaki color |
| Aluminium content (aluminum oxide meter) | Ye Ti≤6.0 | 10.02 |
| Basicity | 40—90 | 86.30 |
Embodiment 2: a kind of method of utilizing waste liquid in activated clay production to prepare aluminium iron polychloride, specifically comprises the following steps:
1) collect after the waste liquid and the mixing of once washing liquid of preparing atlapulgite, analyze main component: ferro-aluminum 3.6%(aluminum oxide meter), acidity 7.5%, measure the mixed solution of 1000ml, place in the synthetic pond of reaction of 2500ml, stir on limit, and be heated to 80 DEG C, slowly add the calcium aluminate powder of 80g～150g, main content: Fe
2o
35.85% Al
2o
348.09% TiO
20.42% CaO 32.52% SiO
27.6%, add after calcium aluminate, continue heating and be incubated two hours at 100 DEG C, transfer in settling vessel coolingly, supernatant liquor is transferred to finished product device, analyzes supernatant liquor composition and content, be mainly ferro-aluminum total content 10.02%(aluminum oxide meter), basicity 86.30%, pH value is 4%.
2) add after calcium aluminate, at continuation keeps 100 DEG C, stir 2～3h, after reaction finishes, will synthesize liquid and deliver to finished product cleaner, sedimentation, after 3 days, is put into finished product device by supernatant liquid, is water conditioner poly aluminium chloride iron liquid product.
The comparison of finished product and GB GB/15892-20008:
| ? | GB GB/15892-2008 | Synthetic fluid product |
| Color | White or yellow | Khaki color |
| Aluminium content (aluminum oxide meter) | Ye Ti≤6.0 | 10.02 |
| Basicity | 40—90 | 86.30 |
3 one kinds of embodiment utilize waste liquid in activated clay production to prepare the method for aluminium iron polychloride, specifically comprise the following steps: 1) collect after the waste liquid and the mixing of once washing liquid of preparing atlapulgite, analyze main component: ferro-aluminum 3.6%(aluminum oxide meter), acidity 7.5%, measures the mixed solution of 1000ml, places in the synthetic pond of reaction of 2500ml, stir on limit, and be heated to 90 DEG C, slowly add the calcium aluminate powder of 150g, main content: Fe
2o
35.85% Al
2o
348.09% TiO
20.42% CaO 32.52% SiO
27.6%, add after calcium aluminate, continue heating and be incubated two hours at 100 DEG C, transfer in settling vessel coolingly, supernatant liquor is transferred to finished product device, analyzes supernatant liquor composition and content, be mainly ferro-aluminum total content 10.02%(aluminum oxide meter), basicity 86.30%, pH value 4%
2) add after calcium aluminate, at continuation keeps 100 DEG C, stir 2～3h, after reaction finishes, will synthesize liquid and deliver to finished product cleaner, sedimentation, after 3 days, is put into finished product device by supernatant liquid, is water conditioner poly aluminium chloride iron liquid product.
The comparison of finished product and GB GB/15892-20008:
| ? | GB GB/15892-2008 | Synthetic fluid product |
| Color | White or yellow | Khaki color |
| Aluminium content (aluminum oxide meter) | Ye Ti≤6.0 | 10.02 |
| Basicity | 40—90 | 86.30 |
Claims (6)
1. a method of utilizing waste liquid in activated clay production to prepare aluminium iron polychloride, it is characterized in that specifically comprising the following steps: the mixed solution that 1) measures 1000ml, place in the synthetic pond of reaction of 2500ml, waste liquid is heated, add again quantitative calcium aluminate to react, the ferro-aluminum content of mixed solution and pH value are acquired a certain degree;
2) add after calcium aluminate, at continuation keeps 100 DEG C, stir 2～3h, after reaction finishes, will synthesize liquid and deliver to finished product cleaner, after sedimentation, supernatant liquid is put into finished product device, be water conditioner poly aluminium chloride iron liquid product.
2. according to claim 1ly a kind ofly utilizing the above-mentioned waste residue of preparing atlapulgite to prepare the method for aluminium iron polychloride, its characterization step 1) described waste liquid is heated to 80-90 DEG C.
3. according to claim 1ly a kind ofly utilizing the above-mentioned waste residue of preparing atlapulgite to prepare the method for aluminium iron polychloride, its characterization step 1) described quantitative calcium aluminate refers to the calcium aluminate of 80～150g.
4. according to claim 1ly a kind ofly utilize the above-mentioned waste residue of preparing atlapulgite to prepare the method for aluminium iron polychloride, its characterization step 1) the ferro-aluminum content 6～12% of described mixed solution.
5. according to claim 1ly a kind ofly utilize the above-mentioned waste residue of preparing atlapulgite to prepare the method for aluminium iron polychloride, its characterization step 1) described pH value 3～5%.
6. according to claim 1ly a kind ofly utilizing the above-mentioned waste residue of preparing atlapulgite to prepare the method for aluminium iron polychloride, its characterization step 2) described sedimentation is sedimentation 2～3 days.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925824A (en) * | 2015-06-11 | 2015-09-23 | 何经 | Production method of activated clay |
| CN106430321A (en) * | 2016-08-31 | 2017-02-22 | 海南宜净环保股份有限公司 | Method for synthesizing polyaluminum ferric chloride |
| CN106745968A (en) * | 2016-12-05 | 2017-05-31 | 百色学院 | A kind of method for processing 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 |
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| JP2002086160A (en) * | 2000-09-18 | 2002-03-26 | Takuma Co Ltd | Treatment method of fluorine-containing waste water |
| 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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2014
- 2014-04-10 CN CN201410140693.4A patent/CN103896381B/en not_active Expired - Fee Related
Patent Citations (4)
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| JP2002086160A (en) * | 2000-09-18 | 2002-03-26 | Takuma Co Ltd | Treatment method of fluorine-containing waste water |
| 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 |
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Non-Patent Citations (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925824A (en) * | 2015-06-11 | 2015-09-23 | 何经 | Production method of activated clay |
| CN106430321A (en) * | 2016-08-31 | 2017-02-22 | 海南宜净环保股份有限公司 | Method for synthesizing polyaluminum ferric chloride |
| CN106745968A (en) * | 2016-12-05 | 2017-05-31 | 百色学院 | A kind of method for processing micro-polluted water |
| 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 |
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