CN102976524A - Method for treating acidic aluminiferous industrial wastewater - Google Patents
Method for treating acidic aluminiferous industrial wastewater Download PDFInfo
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- CN102976524A CN102976524A CN2012105207061A CN201210520706A CN102976524A CN 102976524 A CN102976524 A CN 102976524A CN 2012105207061 A CN2012105207061 A CN 2012105207061A CN 201210520706 A CN201210520706 A CN 201210520706A CN 102976524 A CN102976524 A CN 102976524A
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- water
- calcium aluminate
- pulp water
- acidity
- trade effluent
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- Water Treatment By Sorption (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for treating acidic aluminiferous industrial wastewater, which comprises the following steps: thoroughly mixing and stirring calcium aluminate and acidic aluminiferous industrial wastewater in a mixing region to carry out reaction at high temperature; precipitating in a precipitation region, and filtering to separate slag and water; and dehydrating and drying the active calcium sulfate after slag-waste separation to be used as a construction material. The invention does not need to add any energy source, and can be operated at normal temperature under normal pressure. The invention has the advantage of low treatment cost, and has practical meanings for solving the problems of land occupation, environment pollution and the like due to stacking of calcium aluminate.
Description
Technical field
The invention discloses a kind of method that acidity contains the aluminium trade effluent of processing, belong to sewage treatment area.
Background technology
Aluminium, one of metal that a kind of people are the most frequently used though its harm is known by most people, is not subject to enough attention.Studies confirm that aluminum content is too high in the food, will cause people's early stage aging, aluminium is put aside in brain can cause cerebral neural degeneration, is losing one's memory, and intelligence and personality also can be affected, even present senile dementia.Therefore, aspect environment protection and the HUMAN HEALTH, tool has very important significance to aluminum ions detection.The World Health Organization studies show that, the aluminium that the human body per kilogram of body weight allows to take in can not surpass 1mg.Aluminum content must not be higher than 0.2mg/L in China's regulation tap water.
The aluminum ions method that is used at present the removal natural water body mainly contains enhanced coagulation, ozone oxidation, charcoal absorption, film processing.Enhanced coagulation is to react the generation precipitation by add coagulating agent and aluminum ion in water, thereby reaches the purpose of removal.Although this method clearance is good, operating process is complicated, produces easily secondary pollution.Ozonation also has the shortcoming of aforesaid method.Active carbon adsorption is to utilize gac that the Selective adsorption of ion is reached aluminum ions removal purpose, and clearance is also fine, but its process is complicated, and expense is very high, and material is difficult for regeneration.And the method that film is processed also has above-mentioned shortcoming.
Compare the characteristics such as the present invention has that material is easy to get, reproducible utilization, process are simple, non-secondary pollution with the method that traditional aluminum ion is removed.Realize the comprehensive utilization of domestic refuse, protected environment, widened the range of choice of matrix material in the water adsorption treatment process, realized the resource utilization of waste, had good Social benefit and economic benefit.
Summary of the invention
The present invention provides a kind of method that acidity contains the aluminium trade effluent of processing for solving the deficiencies in the prior art, and the present invention contains aluminium trade effluent abundant mix and blend in the mixing zone with calcium aluminate and acidity, reacts under the condition of high temperature; Then precipitate in the settling region, filter and make the pulp water separation; Activated calcium sulfate after pulp water separates is through dewatering, after the drying, can be used as building materials and continue to use.The present invention need not external energy, can operate under normal temperature, normal pressure.
The technical solution used in the present invention is: the present invention contains in the aluminium trade effluent in acidity to add calcium aluminate powder, reacts under the condition of high temperature; Then precipitate in the settling region, filter and make the pulp water separation; Throw out after pulp water separates is through dewatering, after the drying, can be used as building materials and continue to use.
Concrete steps of the present invention are:
(1) calcium aluminate powder and acidity are contained aluminium trade effluent abundant mix and blend in the mixing zone, add 15 to 25 kilograms active calcium aluminate powder in every cube of water, at 110～120 ℃ of stirring reaction 3～4h;
(2) will contain the aluminic acid wastewater after reaction finishes and in the settling region, precipitate 45 to 65 minutes, pulp water is separated;
(3) waste water after pulp water separates reaches the reuse water standard through filter;
(4) throw out after pulp water separates is through dewatering, after the drying, continuing to use as building materials.
Advantageous characteristic of the present invention is: the present invention need not external energy, can operate under normal temperature, normal pressure.Processing costs of the present invention is low, stores up the problems such as the land occupation that brings and contaminate environment and has actual meaning for solving the charcoal gypsum.
Specific examples
Example 1: in 1 cube of water, add 15 kilograms calcium aluminate powder, at 110 ℃ of lower reaction 3h.The mine that to contain activated calcium sulfate after reaction finishes contains the aluminic acid wastewater and precipitate 45 minutes in the settling region, and pulp water is separated; Mine after pulp water separates contains aluminic acid wastewater supernatant liquor through filter, detects the reuse water standard that reaches.Activated calcium sulfate after pulp water separates can be used as building materials and continues to use after dehydration, drying.
Example 2: in 1 cube of water, add 20 kilograms calcium aluminate powder, at 115 ℃ of lower reaction 3.5h.The mine that to contain activated calcium sulfate after reaction finishes contains the aluminic acid wastewater and precipitate 55 minutes in the settling region, and pulp water is separated; Mine after pulp water separates contains aluminic acid wastewater supernatant liquor through filter, detects the reuse water standard that reaches.Activated calcium sulfate after pulp water separates can be used as building materials and continues to use after dehydration, drying.
Example 3: in 1 cube of water, add 25 kilograms calcium aluminate powder, at 120 ℃ of lower reaction 4h.The mine that to contain activated calcium sulfate after reaction finishes contains the aluminic acid wastewater and precipitate 65 minutes in the settling region, and pulp water is separated; Mine after pulp water separates contains aluminic acid wastewater supernatant liquor through filter, detects the reuse water standard that reaches.Activated calcium sulfate after pulp water separates can be used as building materials and continues to use after dehydration, drying.
Claims (2)
1. process the method that acidity contains the aluminium trade effluent for one kind, it is characterized in that: the present invention contains in the aluminium trade effluent in acidity to add calcium aluminate powder, reacts under the condition of high temperature; Then precipitate in the settling region, filter and make the pulp water separation; Throw out after pulp water separates is through dewatering, after the drying, can be used as building materials and continue to use.
2. a kind of method that acidity contains the aluminium trade effluent of processing according to claim 1 is characterized in that concrete steps are:
(1) calcium aluminate powder and acidity are contained aluminium trade effluent abundant mix and blend in the mixing zone, add 15 to 25 kilograms active calcium aluminate powder in every cube of water, at 110～120 ℃ of stirring reaction 3～4h;
(2) will contain the aluminic acid wastewater after reaction finishes and in the settling region, precipitate 45 to 65 minutes, pulp water is separated;
(3) waste water after pulp water separates reaches the reuse water standard through filter;
(4) throw out after pulp water separates is through dewatering, after the drying, continuing to use as building materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105207061A CN102976524A (en) | 2012-11-27 | 2012-11-27 | Method for treating acidic aluminiferous industrial wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105207061A CN102976524A (en) | 2012-11-27 | 2012-11-27 | Method for treating acidic aluminiferous industrial wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102976524A true CN102976524A (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105207061A Pending CN102976524A (en) | 2012-11-27 | 2012-11-27 | Method for treating acidic aluminiferous industrial wastewater |
Country Status (1)
| Country | Link |
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| CN (1) | CN102976524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115477485A (en) * | 2022-09-06 | 2022-12-16 | 常州大学 | Method for preparing alpha-hemihydrate gypsum by using azo dye sulfuric acid wastewater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037212A (en) * | 2007-04-28 | 2007-09-19 | 王军 | Technical process for producing chloride aluminum |
| CN102070170A (en) * | 2009-11-19 | 2011-05-25 | 蓝保(厦门)水处理科技有限公司 | Method for producing polyaluminium chloride |
-
2012
- 2012-11-27 CN CN2012105207061A patent/CN102976524A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037212A (en) * | 2007-04-28 | 2007-09-19 | 王军 | Technical process for producing chloride aluminum |
| CN102070170A (en) * | 2009-11-19 | 2011-05-25 | 蓝保(厦门)水处理科技有限公司 | Method for producing polyaluminium chloride |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115477485A (en) * | 2022-09-06 | 2022-12-16 | 常州大学 | Method for preparing alpha-hemihydrate gypsum by using azo dye sulfuric acid wastewater |
| CN115477485B (en) * | 2022-09-06 | 2023-08-22 | 常州大学 | Method for preparing alpha-hemihydrate gypsum by utilizing azo dye sulfuric acid wastewater |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20130320 |