CN103482746A - Method for treating sewage by using coal mine wastes - Google Patents
Method for treating sewage by using coal mine wastes Download PDFInfo
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- CN103482746A CN103482746A CN201310474652.4A CN201310474652A CN103482746A CN 103482746 A CN103482746 A CN 103482746A CN 201310474652 A CN201310474652 A CN 201310474652A CN 103482746 A CN103482746 A CN 103482746A
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Abstract
The invention relates to the technical field of wastewater treatment, particularly a method for treating sewage by using coal mine wastes, which comprises the following steps: preparing a novel coagulant from coal gangue, waste acid, scrap iron and other industrial wastes generated in a coal mine enterprise production process under the conditions of alkali fusion, acid fusion and oxidation; and modifying a coal mine collapse basin into a precipitating tank, an oxidation tank, a culture tank and a lotus tank, and carrying out coagulative precipitation, aerobic oxidation and the like on production wastewater and domestic sewage. The method solves the problems of ground occupation of stored coal gangue and treatment of waste acid, lowers the operating cost of the sewage treatment plant, and implements discharge of sewage after reaching the standard or satisfies the water quality requirement of reuse water in coal mine production and living. The method is convenient to operate and low in investment.
Description
Technical field
The present invention relates to technical field of waste water processing, especially a kind of waste-water from coal mine treatment process and system thereof.
Background technology
Coal mining enterprise produces a large amount of coal gangue the like waste in recovery process, stacks these coal gangues and need take a certain amount of soil; Lamp house can produce a certain amount of spent acid; Machine works can produce a certain amount of iron filings the like waste.For the safety that guarantees production, carry out, colliery need to efflux a large amount of mine waters simultaneously, and mine water, from coal-face, heading end and old worked-out section, contains a large amount of coal dusts, rock grain and a certain amount of bacterium, does not add and processes the pollution that discharge can cause surface water body.
Therefore how rationally to utilize economically again these coal gangue the like waste, and the processing and utilizing mine water becomes a difficult problem of each large coal mining enterprise.
Summary of the invention
The technical problem to be solved in the present invention is: the present invention proposes that a kind of to utilize the trade wastes such as the coal gangue that produces in coal mining enterprise's production process, spent acid, waste iron filing be raw material, prepare novel coagulant, utilize this coagulating agent to be processed factory effluent, the sanitary sewage in colliery, solved occupation of land and a useless acid-treated difficult problem that coal gangue is deposited; Reduced the running cost of sewage work; Utilize coal gangue as packing material simultaneously, the production waste that oxidation pond etc. is processed sanitary sewage and down-hole is transformed, is designed to collapse basin.The recycling of the processing and utilizing of coal gangue and sewage is combined, walk the road of the treatment of wastes with processes of wastes against one another.Realize the qualified discharge after sewage disposal, or the water quality requirement that meets reuse water is back in the production, life in colliery simultaneously.
The technical solution adopted for the present invention to solve the technical problems is: treatment process of the present invention is to implement as follows:
(1), at first factory effluent and sanitary sewage are passed in coagulation reaction tank;
(2), then in the coagulating waste water reaction tank, add coagulating agent, be uniformly mixed 30min;
(3), the waste water after being uniformly mixed is introduced to the precipitation pool, hydraulic detention time two days;
(4), pool water outlet be will precipitate and oxidation pond, culture pond, lotus rhizome pond, water outlet discharge or reuse introduced successively.
The making processes of the coagulating agent described in step (1) is as follows:
A, coal gangue is ground, sieves;
B, the coal gangue after screening is immersed in the NaOH solution of 2.0mol/L, heats 80 degree, stir 8 hours, filter;
C, the spent acid that adds concentration 30% in coal gangue filtrate, maintenance pH value 2.0, stir, and under temperature 80 degree conditions, reaction is 2 hours;
Immerse in the spent acid of concentration 30% after d, the iron filings that machine works is produced mix with the coal gangue filter residue, stir, under temperature 60 degree conditions, reaction is 1 hour.
E, the reactant of steps d is filtered, add hydrogen peroxide in filtrate, under temperature 60 degree conditions, stirring reaction is 30 minutes.
F, the reactant of step c is joined in the reactant of step e, under temperature 60 degree conditions, stirring reaction is 30 minutes, cooling, obtains coagulating agent;
The precipitation pool described in step (3), (4), oxidation pond, culture pond, lotus rhizome pond are formed by the transformation of Coal Mine Subsidence basin.Adaptation step is as follows:
1. according to position, the area of processing water yield size, the definite precipitation of the design pool, oxidation pond etc.;
2. peel off the veneer of soil in the precipitation pool, oxidation pond, culture pond, lotus rhizome pond, cover thickness is 1.5 meters, the surrounding of peeling off soil and be deposited in the pool, mixes the cofferdam that builds up the pool with coal gangue;
3. the adjacent precipitation pool, oxidation pond, culture pond, lotus rhizome pond are provided with the connection water channel of Inlet and outlet water;
4. the adjacent precipitation pool, oxidation pond, culture pond, lotus rhizome pond are by connecting the water channel series operation.
The invention has the beneficial effects as follows that utilizing the trade wastes such as the coal gangue that produces in coal mining enterprise's production process, spent acid, scrap iron pin is raw material, prepare novel coagulant, utilize this coagulating agent to be processed factory effluent, the sanitary sewage in colliery, solved occupation of land and a useless acid-treated difficult problem that coal gangue is deposited; Utilize coal gangue as packing material simultaneously, collapse basin is transformed, is designed to precipitate the production waste that the pool, oxidation pond etc. are processed sanitary sewage and down-hole, the recycling of the processing and utilizing of coal gangue and sewage is combined, walk the road of the treatment of wastes with processes of wastes against one another.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the orthographic plan of specific embodiments of the invention.
In figure: 1. water-in, the 2. precipitation pool, 3. cofferdam, 4. oxidation pond, 5. connect water channel, 6. culture pond, 7. lotus rhizome pond, 8. water outlet.
Embodiment
1 the present invention is further detailed explanation by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
(1), at first factory effluent and sanitary sewage are passed in coagulation reaction tank, the size of coagulation reaction tank is determined according to the water yield design of factory effluent and sanitary sewage;
(2), then in the coagulating waste water reaction tank, add coagulating agent, be uniformly mixed 30min;
(3), the waste water after being uniformly mixed is introduced to the precipitation pool 2, hydraulic detention time two days by water-in 1;
(4), will precipitate the pool 2 water outlets and introduce successively oxidation pond 4, culture pond 6, lotus rhizome pond 7, water outlet is by water outlet 8 discharge or reuses.
The making processes of the coagulating agent described in step (1) is as follows:
A, coal gangue grind, screening;
B, the coal gangue after screening is immersed in to heating 80 degree in the NaOH solution of 2.0mol/L, stirs 8 hours; Filter;
C, the spent acid that adds concentration 30% in coal gangue filtrate, maintenance pH value 2.0, stir, and under temperature 80 degree conditions, reacts 2 hours;
Immerse in the spent acid of concentration 30% after d, the iron filings that machine works is produced mix with the coal gangue filter residue, stir, under temperature 60 degree conditions, react 1 hour.
E, the reactant of steps d is filtered, add hydrogen peroxide in filtrate, under temperature 60 degree conditions, stirring reaction is 30 minutes.
F, the reactant of step c is joined in the reactant of step e, under temperature 60 degree conditions, stirring reaction is 30 minutes, cooling, obtains coagulating agent;
The precipitation pool 2 described in step (3), (4), oxidation pond 4, culture pond 6, lotus rhizome pond 7 are formed by the transformation of Coal Mine Subsidence basin.Adaptation step is as follows:
1. according to processing water yield size, the definite precipitation of the design pool 2, oxidation pond 4, culture pond 6, the position in lotus rhizome pond 7, area;
2. peel off the veneer of soil in the precipitation pool 2, oxidation pond 4, culture pond 6, lotus rhizome pond 7, cover thickness is 1.5 meters, the surrounding of peeling off soil and be deposited in the pool, with coal gangue, mixes and builds up cofferdam;
3. the adjacent precipitation pool 2, oxidation pond 4, culture pond 6, lotus rhizome pond 7 are provided with the connection water channel 5 of Inlet and outlet water;
4. the adjacent precipitation pool 2, oxidation pond 4, culture pond 6, lotus rhizome pond 7 are by connecting water channel 5 series operations.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, the relevant staff can, in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to the claim scope.
Claims (3)
1. a method of utilizing Coal Solid Wastes to dispose of sewage has following steps:
(1), at first factory effluent and sanitary sewage are passed in coagulation reaction tank;
(2), then add coagulating agent in coagulation reaction tank, be uniformly mixed 30min;
(3), the waste water after being uniformly mixed is introduced to the precipitation pool, hydraulic detention time two days;
(4), pool water outlet be will precipitate and oxidation pond, culture pond, lotus rhizome pond, water outlet discharge or reuse introduced successively.
2. the making processes of coagulating agent as claimed in claim 1 is as follows:
A, coal gangue is ground, sieves;
B, the coal gangue after screening is immersed in to heating 80 degree in the NaOH solution of 2.0mol/L, stirs 8 hours, filter;
C, the spent acid that adds concentration 30% in coal gangue filtrate, maintenance pH value 2.0, stir, and under temperature 80 degree conditions, reacts 2 hours;
Immerse in the spent acid of concentration 30% after d, the iron filings that machine works is produced mix with the coal gangue filter residue, stir, under temperature 60 degree conditions, react 1 hour.
E, the reactant of steps d is filtered, add hydrogen peroxide in filtrate, under temperature 60 degree conditions, stirring reaction is 30 minutes.
F, the reactant of step c is joined in the reactant of step e, under temperature 60 degree conditions, stirring reaction is 30 minutes, cooling, obtains coagulating agent.
3. the precipitation as claimed in claim 1 pool, oxidation pond, culture pond, lotus rhizome pond are formed by the transformation of Coal Mine Subsidence basin, and adaptation step is as follows:
1. according to processing water yield size, the definite precipitation of the design pool, oxidation pond, culture pond, the position in lotus rhizome pond, area;
2. peel off the veneer of soil in the precipitation pool, oxidation pond, culture pond, lotus rhizome pond, cover thickness is 1.5 meters, the surrounding of peeling off soil and be deposited in the pool, with the cofferdam that builds up the pool after coal gangue mixes;
3. the adjacent precipitation pool, oxidation pond, culture pond, lotus rhizome pond are provided with the connection water channel of Inlet and outlet water;
4. the adjacent precipitation pool, oxidation pond, culture pond, lotus rhizome pond are by connecting the water channel series operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310474652.4A CN103482746A (en) | 2013-10-11 | 2013-10-11 | Method for treating sewage by using coal mine wastes |
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| CN201310474652.4A CN103482746A (en) | 2013-10-11 | 2013-10-11 | Method for treating sewage by using coal mine wastes |
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| CN103482746A true CN103482746A (en) | 2014-01-01 |
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| CN201310474652.4A Pending CN103482746A (en) | 2013-10-11 | 2013-10-11 | Method for treating sewage by using coal mine wastes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105393962A (en) * | 2015-11-30 | 2016-03-16 | 山东农业大学 | Pond and coal mine sunk land relay cultivation method |
| CN108558059A (en) * | 2018-01-30 | 2018-09-21 | 常州大学 | A kind of processing unit and method of serious pollution river water |
| CN114477605A (en) * | 2022-02-22 | 2022-05-13 | 浙江宏电环保装备有限公司 | Membrane concentrate treatment facility with settlement treatment structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075302A (en) * | 1992-02-14 | 1993-08-18 | 黑龙江大学 | Produce the method for coagulant with coal gangue |
| CN101125697A (en) * | 2007-08-24 | 2008-02-20 | 中国石油大学(华东) | Method for producing water treatment coagulant by using coal gangue |
| CN102161556A (en) * | 2011-06-02 | 2011-08-24 | 重庆大学 | Sewage low-carbon treatment method combining chemical carbon fixation and ecological treatment |
-
2013
- 2013-10-11 CN CN201310474652.4A patent/CN103482746A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075302A (en) * | 1992-02-14 | 1993-08-18 | 黑龙江大学 | Produce the method for coagulant with coal gangue |
| CN101125697A (en) * | 2007-08-24 | 2008-02-20 | 中国石油大学(华东) | Method for producing water treatment coagulant by using coal gangue |
| CN102161556A (en) * | 2011-06-02 | 2011-08-24 | 重庆大学 | Sewage low-carbon treatment method combining chemical carbon fixation and ecological treatment |
Non-Patent Citations (1)
| Title |
|---|
| 万玉山等: "塌陷盆地 处理污水的设计", 《环境保护》, 31 March 2004 (2004-03-31), pages 24 - 26 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105393962A (en) * | 2015-11-30 | 2016-03-16 | 山东农业大学 | Pond and coal mine sunk land relay cultivation method |
| CN105393962B (en) * | 2015-11-30 | 2018-05-25 | 山东农业大学 | " pond+Subsiding land " relay cultural method |
| CN108558059A (en) * | 2018-01-30 | 2018-09-21 | 常州大学 | A kind of processing unit and method of serious pollution river water |
| CN114477605A (en) * | 2022-02-22 | 2022-05-13 | 浙江宏电环保装备有限公司 | Membrane concentrate treatment facility with settlement treatment structure |
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Application publication date: 20140101 |