CN104192970B - Carbide slag slow-release material of a kind for the treatment of of acidic wastewater and preparation method thereof - Google Patents
Carbide slag slow-release material of a kind for the treatment of of acidic wastewater and preparation method thereof Download PDFInfo
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- CN104192970B CN104192970B CN201410379755.7A CN201410379755A CN104192970B CN 104192970 B CN104192970 B CN 104192970B CN 201410379755 A CN201410379755 A CN 201410379755A CN 104192970 B CN104192970 B CN 104192970B
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Abstract
The present invention relates to technical field of waste water processing, especially carbide slag slow-release material of a kind for the treatment of of acidic wastewater and preparation method thereof, prepared the carbide slag slow-release material of acid waste water process as raw material by employing carbide slag, this for carbide slag waste can be recycled, be prepared into the waste water that process is acid, and then reach the object of the treatment of wastes with processes of wastes against one another, reduce the cost of acid waste water process; By carrying out the preparation of slow-release material after being processed by electricity of wet process rock ballast, and the carrying out of its whole preparation technology parameter being controlled, carbide slag fertilizer having been carried out comprehensive utilization, has reduced the pollution level of carbide slag to environment, there is the significant value of environmental protection.
Description
Technical field
The present invention relates to technical field of waste water processing, carbide slag slow-release material of especially a kind for the treatment of of acidic wastewater and preparation method thereof.
Background technology
Carbide slag is the strong basicity waste residue that a kind of carbide of calcium prepares the later discharge of acetylene, its main component is calcium hydroxide, because it has alkaline feature, therefore in discharge in the environment, or stacking process will cause serious pollution to environment, and earth's surface not only can be caused to pollute, also groundwater resource etc. can be caused all to be polluted simultaneously, therefore, carbide slag is fully utilized, avoid the environmental pollution that the discharge of carbide slag causes.At present, the approach for the comprehensive utilization of carbide slag is more, typically has building material field; But it is also relatively less in the application of field of waste water treatment.
Carbide slag presents strong basicity, for this reason, it can be used as field of waste water treatment, normally it can be used as the process of acid waste water, and in current prior art, the quantity discharged of acid waste water is every average annual larger, its source is also varied, the discharge of acid waste water not only can bring pollution to earth's surface, also can bring pollution to underground water, and then has serious ecological impact.
As produced a large amount of acid waste water in plating, bleaching process, also can produce a large amount of waste water in colliery or Iron Mine factory, these waste water all can with a large amount of metal ions, severe contamination earth's surface and underground water source.
Therefore, process for acid waste water has the ecological significance of particularly important, treatment process at present for acid waste water adopts basic material directly to drop in acid waste water, and then utilize acid-base neutralisation to react, reach the object processed acid waste water, this treatment process needs to add treatment agent continuously and constantly and enters, and consumes a large amount of manpowers, also can produce new pollutant emission in earth's surface and underground simultaneously, and then bring serious ecological pollution again to earth's surface and underground.
Therefore, carbide slag, by long-term research and discovery, is prepared a kind of acid waste water process slow-release material of the treatment of wastes with processes of wastes against one another, for technical field of waste water processing provides a kind of new approaches by this researchist as raw material.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides a kind of acid waste water process manually less, material easily recycles, wastewater treatment pH value is easy to control in process, the carbide slag slow-release material preparation method of process materials'use life-span long, the simple treatment of acidic wastewater of preparation technology.
The present invention also provides one can make to reach 1 day work-ing life to 3 years and after wastewater treatment, the carbide slag slow-release material of not fugitive treatment of acidic wastewater.
Be achieved particular by following technical scheme:
A carbide slag slow-release material preparation method for treatment of acidic wastewater, comprises the following steps:
(1) by carbide slag with cement according to (10-19): the weight ratio of (1-10) mixes, then is carried out roller pair breaking to particle diameter≤5mm, stand-by;
(2) by step 1) the compound forming diameter that obtains is the right cylinder of 5-50mm;
(3) by step 2) after shaping right cylinder carries out maintenance process, the carbide slag slow-release material for the treatment of of acidic wastewater can be obtained.
Described carbide slag is the one in electricity of wet process rock ballast, dry method carbide slag.
Described preparation method, when carbide slag is the higher electricity of wet process rock ballast of water ratio, in step 1) front also including add lime powder and regulate moisture≤30%.
The consumption of described lime is the 0-50% of electricity of wet process rock ballast gross weight.
Described cement is the one in silicate cement, ordinary Portland cement, trass cement, pulverized fuel ash cement, slag cement, complex cement.
Described shaping be adopt the one in hydrostatic profile, vibration extrusion forming.
Described maintenance is the one in natural curing, vapor cure;
Described vapor cure is at vapor temperature is 50-250 DEG C, steam-cured more than 4 hours;
Described natural curing is under physical environment, watering maintenance more than 3 days.
The present invention also provides a kind of carbide slag slow-release material for the treatment of of acidic wastewater, and its slow-release time in water is 1 day to 3 years.
Compared with prior art, technique effect of the present invention is embodied in:
1. prepared the carbide slag slow-release material of acid waste water process as raw material by employing carbide slag, this for carbide slag waste can be recycled, be prepared into the waste water that process is acid, and then reach the object of the treatment of wastes with processes of wastes against one another, reduce the cost of acid waste water process.
2. by a few step process such as preparation, shaping and maintenances, make the preparation technology of slow-release material simple, preparation cost is cheap, has significant economic benefit.
3. the slow-release material for the treatment of of acidic wastewater for preparing of the present invention has for the process of acid waste water that labour intensity is lower, wastewater treatment pH value is controlled, long service life, the feature easily reclaimed after wastewater treatment.
Embodiment
Below in conjunction with concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
A carbide slag slow-release material preparation method for treatment of acidic wastewater, comprises the following steps:
(1) carbide slag of wet production gained is added the lime slaking of 25%, it is 30% stand-by for adjusting its moisture content;
(2) carbide slag is mixed with the weight ratio of cement according to 4:1, stir, then carried out roller pair breaking to particle diameter 5mm, stand-by;
(3) by step 1) the compound forming diameter that obtains is the right cylinder of 20mm, long 50mm;
(4) by step 2) shaping right cylinder carries out natural curing and is treated to watering maintenance process after 7 days, can obtain the carbide slag slow-release material for the treatment of of acidic wastewater.
Described cement is silicate cement.
Described shaping be adopt hydrostatic profile.
Get prepared carbide slag acid waste water process slow-release material 50kg and put into plastic crate, dropping into pH value is in the waste-water from coal mine treating pond of 3, with the flow velocity process waste water of 5L/h, and process 15d, the wastewater pH of process is 6 ~ 9, produces a large amount of ferric hydroxide precipitate in waste water.Observe carbide slag acid waste water process material and have no defeated and dispersed.
Embodiment 2
A carbide slag slow-release material preparation method for treatment of acidic wastewater, comprises the following steps:
(1) carbide slag is mixed with the weight ratio of cement according to 15:5, stir, then carried out roller pair breaking to particle diameter 3mm, stand-by;
(2) by step 1) the compound forming diameter that obtains is the right cylinder of 20mm, long 50mm;
(3) by step 2) shaping right cylinder carries out maintenance process after 8 hours, can obtain the carbide slag slow-release material for the treatment of of acidic wastewater.
Described cement is pulverized fuel ash cement.
Described shaping be adopt hydrostatic profile.
Described maintenance is vapor cure, and temperature is 65 DEG C;
Get prepared carbide slag acid waste water process material 50kg and put into plastic crate, dropping into pH value is in the waste-water from coal mine treating pond of 3, and with the flow velocity process waste water of 5L/h, process 30d, the wastewater pH of process is 6 ~ 9, produces a large amount of ferric hydroxide precipitate in waste water.Carbide slag acid waste water process material has no defeated and dispersed.
Be necessary to point out at this; above embodiment and test example are only limitted to be further elaborated the technique effect that technical scheme of the present invention can reach and illustrate; the further restriction to technical scheme of the present invention can not be interpreted as; the essential characteristics of the non-protruding that those skilled in the art make on this basis and the improvement of non-significant progress, all belong to protection category of the present invention.
Claims (7)
1. a carbide slag slow-release material preparation method for treatment of acidic wastewater, is characterized in that, comprise the following steps:
(1) by carbide slag with cement according to (10-19): the weight ratio of (1-10) mixes, and adopts the stirring of stirrer, then is carried out roller pair breaking to particle diameter≤5mm, stand-by;
(2) by step 1) the compound forming diameter that obtains is the right cylinder of 5 ~ 50mm;
(3) by step 2) shaping right cylinder carries out maintenance process more than 3 days, can obtain the carbide slag slow-release material for the treatment of of acidic wastewater; Described carbide slag is the one in electricity of wet process rock ballast, dry method carbide slag.
2. the carbide slag slow-release material preparation method for the treatment of of acidic wastewater as claimed in claim 1, it is characterized in that, described preparation method, when carbide slag is the higher electricity of wet process rock ballast of water ratio, in step 1) front also including add lime powder and regulate moisture≤30%.
3. the carbide slag slow-release material preparation method for the treatment of of acidic wastewater as claimed in claim 2, it is characterized in that, the consumption of described lime is the 0-50% of electricity of wet process rock ballast gross weight.
4. the carbide slag slow-release material preparation method for the treatment of of acidic wastewater as claimed in claim 1, it is characterized in that, described cement is the one in silicate cement, ordinary Portland cement, trass cement, pulverized fuel ash cement, slag cement, complex cement.
5. the carbide slag slow-release material preparation method for the treatment of of acidic wastewater as claimed in claim 1, is characterized in that, described shaping be adopt the one in hydrostatic profile, vibration extrusion forming.
6. the carbide slag slow-release material preparation method for the treatment of of acidic wastewater as claimed in claim 1, it is characterized in that, described maintenance is the one in natural curing, vapor cure; Described vapor cure is 50-250 DEG C in vapor temperature, steam-cured more than 4 hours; Described natural curing is under physical environment, watering maintenance more than 3 days.
7. the carbide slag slow-release material for the treatment of of acidic wastewater prepared by the carbide slag slow-release material preparation method of the treatment of acidic wastewater as described in any one of claim 1-6, its slow-release time in water is 1 day to 3 years.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410379755.7A CN104192970B (en) | 2014-08-04 | 2014-08-04 | Carbide slag slow-release material of a kind for the treatment of of acidic wastewater and preparation method thereof |
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| CN201410379755.7A CN104192970B (en) | 2014-08-04 | 2014-08-04 | Carbide slag slow-release material of a kind for the treatment of of acidic wastewater and preparation method thereof |
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| CN104192970A CN104192970A (en) | 2014-12-10 |
| CN104192970B true CN104192970B (en) | 2016-03-23 |
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| CN108314372B (en) * | 2018-05-15 | 2021-06-11 | 吉林建筑大学 | Alkali slow-release material suitable for underground water in-situ demanganization technology and preparation method thereof |
| CN110316804A (en) * | 2019-06-12 | 2019-10-11 | 包头钢铁（集团）有限责任公司 | A kind of processing method improving steel slag and desulfurized waste water pH value |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106532A (en) * | 1986-10-03 | 1987-11-11 | 冶金部建筑研究总院 | Acidic waste water treatment agent |
| CN103693727A (en) * | 2013-12-18 | 2014-04-02 | 山东国大黄金股份有限公司 | Method for sewage neutralization and efficient cyclic utilization of waste residue |
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- 2014-08-04 CN CN201410379755.7A patent/CN104192970B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106532A (en) * | 1986-10-03 | 1987-11-11 | 冶金部建筑研究总院 | Acidic waste water treatment agent |
| CN103693727A (en) * | 2013-12-18 | 2014-04-02 | 山东国大黄金股份有限公司 | Method for sewage neutralization and efficient cyclic utilization of waste residue |
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Effective date of registration: 20170703 Address after: 550000 Nanming, Guizhou Province, Sha Chong Chong Road, No. 13, No. Co-patentee after: Guizhou industrial solid waste comprehensive utilization (building material) Engineering Technology Research Center Patentee after: Co., Ltd of Guizhou Prov. Building Material Science Inst. Address before: 550008 B548 building, Jinyang science and Technology Industrial Park, Guiyang hi tech Zone, Guizhou, China Patentee before: Guizhou industrial solid waste comprehensive utilization (building material) Engineering Technology Research Center |