CN100427408C - Method for treating waste water of mine by using fly ash - Google Patents
Method for treating waste water of mine by using fly ash Download PDFInfo
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- CN100427408C CN100427408C CNB2005100288537A CN200510028853A CN100427408C CN 100427408 C CN100427408 C CN 100427408C CN B2005100288537 A CNB2005100288537 A CN B2005100288537A CN 200510028853 A CN200510028853 A CN 200510028853A CN 100427408 C CN100427408 C CN 100427408C
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- waste water
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- fly ash
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The present invention discloses a method for treating mine wastewater by fly ash. The method comprises the following steps: a. the fly ash and the mine wastewater are thoroughly stirred and mixed in a reaction tank, and 5 to 10 grams of the fly ash is added into each liter of the water to react for 10 to 15 minutes at a normal temperature; b. after the reaction is finished, the mine wastewater containing the fly ash is settled for 45 to 60 minutes in a settling tank, and slag and the water are separated; c. mine wastewater supernatant liquid with separated slag and water is filtered by a filter tank to reach the standards of reusable water. The present invention has the advantages of economy and high efficiency. Indexes of suspended substances, CODcr, color, etc. of the treated mine wastewater can reach the standards of the reusable water. Simultaneously, the fly ash used by the wastewater treatment can be concentrated to be used as construction materials. The present invention realizes the dual goals of the reclamation of the mine wastewater and the recycle of the fly ash.
Description
Technical field
The present invention relates to a kind of wastewater treatment method, relate to a kind of method of utilizing flyash to handle waste water of mine in particular.
Background technology
Characteristics such as waste water of mine has suspended substance (SS), colourity, the CODcr index is higher and the pH value is lower, then the water yield is big, composition is more single with respect to other trade effluent.At present, adopt the method for traditional chemical coagulation to handle mostly to waste water of mine, consumption of chemical agent is big, the expense height, though chemical coagulation process the colourity of waste water of mine, indicator of suspended solids can be reduced, often unsatisfactory to the removal effect of CODcr.Chinese invention patent application number 99114215.2, publication number CN1273944A, name is called " utilizing flyash to handle waste water; the method for sewage ", disclose a kind of flyash that utilizes and handled waste water, the method of sewage, this method utilizes the flyash in power station to store up as diafiltration bed and oxidation field pending waste water, sewage transport is stored up the field to the flyash in power station makes its fine coal grieshoch of flowing through, diafiltration enters in the structures that catchment, again by discharging in the structures that catchment, the catchment drain discharge of structures of adjusting makes waste water, the rate of percolation of sewage be not more than 0.06 meter/per hour.This invention utilizes the fuel-burning power plant discharging to store up the facility of flyash, makes black water be subjected to diafiltration, absorption and the sunlight of flyash, the bio-oxidation decomposing, purifying effect of air, and effect has met or exceeded secondary biochemical treatment.But this invention also exists following shortcoming: one, waste water is stored up the field by pipe-line transportation to the flyash in fuel-burning power plant and handle, need to consume a large amount of tubing, construction investment is big; Two, this invention need become the municipal sewage plant with the grey stockyard in fuel-burning power plant, inconvenient operational administrative in the middle of the actually operating; Three, this invention has only reached waste water, sewage emissions level to the processing of waste water of mine, does not reach the level that the resource utilization once more of waste water of mine is recycled.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method of utilizing flyash to handle waste water of mine, this method economy, efficient, and the waste water of mine after the processing, indexs such as suspended substance, CODcr and colourity can reach the reuse water standard.
The technical solution used in the present invention: a kind of method of utilizing flyash to handle waste water of mine, comprise the following steps: that a. fully mixes flyash and waste water of mine in reaction tank, add the flyash of 5～10 grams in every premium on currency, normal temperature reacted 10～15 minutes down; The waste water of mine that will contain flyash after b. reaction finishes precipitates 45～60 minutes in settling tank, pulp water is separated; C. the waste water of mine supernatant liquor after pulp water separates reaches the standard of reuse water through filter.
Described reaction tank of step a and the described settling tank of step b are the combined reaction ponds that is connected as a single entity, and step a and step b carry out with the pond.
Waste water of mine entered preliminary sedimentation tank by grid earlier and removes the macrobead inorganics before entering reaction tank or combined reaction pond, effect can be better.
The lime-ash in preliminary sedimentation tank, settling tank or combined reaction pond is input to after sludge thickener concentrates, still can be used as material of construction and continue to utilize.
Beneficial effect of the present invention: the present invention utilizes the characteristics that fly ash grain is tiny, hole is big, adsorptive power is strong to handle waste water of mine, has advantages such as cost is low, effective, the treatment of wastes with processes of wastes against one another.Suitably the dosage of control flyash can be reduced to the principal pollutant CODcr in the waste water of mine below the 15mg/L, and colourity and suspended substance reach the standard of reuse water.Continue to be used and still can be used as material of construction through the lime-ash after the use (after concentrating), the present invention has realized the double goal of waste water of mine resource utilization and flyash recycle.
Description of drawings
Fig. 1 is a process flow sheet one;
Fig. 2 is a process flow sheet two.
Embodiment
Below by embodiment the present invention is described in further detail: as shown in Figure 1, detailed step of the present invention is: a at first is a step of reaction: in reaction tank, flyash and waste water of mine are carried out proportioning with the amount of every premium on currency 5～10 grams, carry out ash, water fully mixes, reaction times is under the normal temperature (20 ℃) 10～15 minutes, and temperature reduces, but the proper extension reaction times, reaction is finished, and pollutent is removed; B. enter the pulp water separation phase then: this process realizes in settling tank, is 45～60 minutes precipitation process through the time, and waste water obtains clarification; C. the supernatant liquor of post precipitation is handled after filtration again, gets final product reuse.Former water in the schema is original undressed waste water of mine.Waste water of mine entered preliminary sedimentation tank by grid earlier and removes the macrobead inorganics before entering reaction tank or combined reaction pond, effect can be better.The lime-ash in preliminary sedimentation tank, settling tank or combined reaction pond is input to after sludge thickener concentrates, can be used as material of construction and continue to utilize.
As shown in Figure 2, described reaction tank of step a and the described settling tank of step b are the combined reaction ponds that is connected as a single entity, and step a and step b can carry out synchronously.Earlier waste water is introduced preliminary sedimentation tank through grid, remove the macrobead inorganics; The preliminary sedimentation tank water outlet enters collection reaction and the combined reaction pond that is precipitated as one, carries out pollutant removal and separates with pulp water; Supernatant liquor enters the filter tank and carries out last one purifying treatment; But water outlet reuse.Simultaneously, the lime-ash in the throw out of preliminary sedimentation tank and comprehensive pond enters sludge thickener and concentrates, and the lime-ash after concentrating still can be used as material of construction to be continued to utilize.
Above said content only is the basic explanation of the present invention under conceiving, and according to any equivalent transformation that technical scheme of the present invention is done, all should belong to protection scope of the present invention.
Claims (7)
1. a method of utilizing flyash to handle waste water of mine comprises the following steps:
A. flyash and waste water of mine are fully mixed in reaction tank, add the flyash of 5～10 grams in every premium on currency, normal temperature reacted 10～15 minutes down;
The waste water of mine that will contain flyash after b. reaction finishes precipitates 45～60 minutes in settling tank, pulp water is separated;
C. the waste water of mine supernatant liquor after pulp water separates reaches the standard of reuse water through filter.
2. according to the described a kind of method of utilizing flyash to handle waste water of mine of claim 1, it is characterized in that described reaction tank of step a and the described settling tank of step b are the combined reaction ponds that is connected as a single entity, step a and step b carry out with the pond.
3. according to the described a kind of method of utilizing flyash to handle waste water of mine of claim 1, it is characterized in that waste water of mine entered preliminary sedimentation tank by grid earlier and removes the macrobead inorganics before entering reaction tank.
4. according to the described a kind of method of utilizing flyash to handle waste water of mine of claim 2, it is characterized in that waste water of mine entered preliminary sedimentation tank by grid earlier and removes the macrobead inorganics before entering the combined reaction pond.
5. according to claim 1 or 3 described a kind of methods of utilizing flyash to handle waste water of mine, the lime-ash that it is characterized in that settling tank still can be used as material of construction and is used after sludge thickener concentrates.
6. according to claim 2 or 4 described a kind of methods of utilizing flyash to handle waste water of mine, the lime-ash that it is characterized in that the combined reaction pond still can be used as material of construction and is used after sludge thickener concentrates.
7. according to claim 3 or 4 described a kind of methods of utilizing flyash to handle waste water of mine, the lime-ash that it is characterized in that preliminary sedimentation tank still can be used as material of construction and is used after sludge thickener concentrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100288537A CN100427408C (en) | 2005-08-17 | 2005-08-17 | Method for treating waste water of mine by using fly ash |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100288537A CN100427408C (en) | 2005-08-17 | 2005-08-17 | Method for treating waste water of mine by using fly ash |
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| Publication Number | Publication Date |
|---|---|
| CN1760138A CN1760138A (en) | 2006-04-19 |
| CN100427408C true CN100427408C (en) | 2008-10-22 |
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| CNB2005100288537A Expired - Fee Related CN100427408C (en) | 2005-08-17 | 2005-08-17 | Method for treating waste water of mine by using fly ash |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2020317995B2 (en) * | 2019-07-23 | 2023-07-13 | Kleener Power Solutions Oy | Purification composition, method for producing purification composition and method for purifying flue gas by purification composition |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001720A (en) * | 2010-09-17 | 2011-04-06 | 昆明理工大学 | Method for treating mine acidic copper-containing waste water by using phosphogypsum |
| CN102259962A (en) * | 2011-06-05 | 2011-11-30 | 夏刚 | Method for treating tannery wastewater by utilizing desulfurized high-calcium fly ash |
| CN103159348A (en) * | 2013-04-08 | 2013-06-19 | 上海电力学院 | Method for treating chromaticity of printing and dyeing wastewater by utilizing lytag material |
| CN110194505B (en) * | 2019-06-18 | 2020-10-30 | 王永红 | Method for treating industrial wastewater by using modified fly ash |
| CN113262754A (en) * | 2021-05-12 | 2021-08-17 | 中国地质科学院水文地质环境地质研究所 | Comprehensive utilization method of mine water and fly ash in large coal-electricity base |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2020317995B2 (en) * | 2019-07-23 | 2023-07-13 | Kleener Power Solutions Oy | Purification composition, method for producing purification composition and method for purifying flue gas by purification composition |
| US11813568B2 (en) | 2019-07-23 | 2023-11-14 | Kleener Power Solutions Oy | Purification composition, method for producing purification composition and method for purifying flue gas by purification composition |
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| CN1760138A (en) | 2006-04-19 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID SHANGHAI ELECTRIC POWER COMPANY Effective date: 20141217 |
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Effective date of registration: 20141217 Address after: 200090 Pingliang Road, Shanghai, No. 2103, No. Patentee after: Shanghai University of Electric Power Patentee after: State Grid Shanghai Municipal Electric Power Company Address before: 200090 Pingliang Road, Shanghai, No. 2103, No. Patentee before: Shanghai University of Electric Power |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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