CN1273944A - Process for treating waste water or sewage with powdered coal ash - Google Patents
Process for treating waste water or sewage with powdered coal ash Download PDFInfo
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- CN1273944A CN1273944A CN99114215A CN99114215A CN1273944A CN 1273944 A CN1273944 A CN 1273944A CN 99114215 A CN99114215 A CN 99114215A CN 99114215 A CN99114215 A CN 99114215A CN 1273944 A CN1273944 A CN 1273944A
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- waste water
- flyash
- sewage
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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
Abstract
A process for treating waste water or sewage features that the powdered coal ash stack field of electric power plant is used as percolation bed and oxidizing field and said waste water or sewage flows through the powdered coal ash layer into the water gathering ditch while the percolation speed is controlled to be 0.06 m/hr. Its treating effect can reach or exceed the effect of two-stage biochemical treatment.
Description
The present invention relates to a kind of method of handling waste water, sewage, particularly utilize flyash to handle the method for waste water, sewage.
In the prior art, the method of utilizing flyash to handle waste water, sewage mainly is to drop into flyash in waste water, sewage, with with flyash as scavenging agent, sorbent treatment waste water, sewage, be that Chinese patent application file " with the method for the flyash purifying city sanitary sewage " notification number of CN1053913A is the Chinese patent application file " method for the treatment of industrial waste water by powdered coal ash sorption " of CN1064664A as notification number.The shortcoming of its existence is: special-purpose cleaning project facility, equipment all must be arranged, and except that making the scavenging agent of flyash, also be furnished with other scavenging material.Not only engineering construction investment height, and operation cost is also high, makes the expense of handling waste water, sewage very high.
The objective of the invention is at the prior art deficiency, proposed the method that a kind of flyash that utilizes the discharging of flyash in the fuel-burning power plant to store up facility and its discharging is handled waste water, sewage.
The objective of the invention is to reach by following technical scheme, the present invention is a kind of method of utilizing flyash to handle waste water, sewage, be characterized in storing up the field as diafiltration bed and oxidation field with the flyash in fuel-burning power plant, pending waste water, sewage transport are stored up the field to the flyash in fuel-burning power plant makes its thickness of flowing through be not less than 1.5 meters fine coal grieshoch, diafiltration enters in the structures that catchment that are with sandy gravel stratum, again by discharging in the structures that catchment, the catchment drain discharge of structures of adjusting, make the rate of percolation of waste water, sewage be not more than 0.06 meter/per hour.Like this, the treatment of wastes with processes of wastes against one another, utilize the fuel-burning power plant discharging to store up the job facilities of flyash, and the loose porous crack of particle, to flyash poisonous, that objectionable impurities has strong adsorption property, make trade effluent and city domestic sewage be subjected to diafiltration, absorption and sunlight, air and the biological oxygenolysis cleaning action of flyash.Waste water after continuing to purify drains into flyash through the structures that catchment and stores up outside the venue.Because the essential mineral composition of flyash is an aluminum silicate, it is a chemisorption to poisonous, the objectionable impurities adsorption in waste water, the sewage, having only a small amount of activated carbon is physical adsorption, because the oxygenolysis of flyash dehydration back daylight, air can not cause secondary pollution poisonous, objectionable impurities, does not continue comprehensive utilization so can not influence flyash.As make material of construction.
Purpose of the present invention can also further reach by following scheme.The aforesaid method of utilizing flyash to handle waste water, sewage, the inwall of the structures that are characterized in catchmenting is provided with into water space, has at inwall between the zone and fine coal grieshoch in water space into, is provided with the thick sandy gravel stratum of 0.5-1.5 rice.Sandy gravel stratum can block flyash and enter the structures that catchment.
Purpose of the present invention can also further reach by following scheme.The aforesaid method of utilizing flyash to handle waste water, sewage, be characterized in being mixed into mortar with flyash in pending waste water, the fine coal ashpit that sewage is transported to the fuel-burning power plant earlier, by the waterpower ash conveying pipe flyash that mixed mortar is transported to the fuel-burning power plant stored up the field again.Industrial waste water purifying process and flyash discharging are carried out in the lump, and waste water is the carrier of ash transfer in this course, and flyash is scavenging agent poisonous in the waste water, objectionable impurities, and both utilize mutually.Can not make flyash on draining technology and operation cost, be subjected to any detrimentally affect because trade effluent participates in carrying flyash, flyash waterpower transport pipe is that flyash is with waste water, just adsorbate is stirred and the place that contacts fullest with sorbent material, it is the environment poisonous in the flyash absorption waste water, that objectionable impurities is best, simultaneously owing to there is air to exist in the pipe again, help the procreation of aerobic bacteria, therefore biochemical action is very active in the pipe.By power plant's ash conveying pipe and flyash fully stir contact and adsorb after enter flyash again and store up and to purify.Can improve decontamination effect improving to waste water, sewage.
Purpose of the present invention can also further reach by following scheme.The aforesaid method of utilizing flyash to handle waste water, sewage is characterized in that the pH value that will enter waterpower ash conveying pipe mortar before with spent acid or acid waste water transfers to 5-7.Because the scale formation of fly ash pipe can be avoided or alleviate to the pH value of trade effluent lower (5-6), reduce the eliminating sludge in pipe workload, prolong pipeline working life.
Purpose of the present invention can also further reach by following scheme.The aforesaid method of utilizing flyash to handle waste water, sewage, the waste water that is characterized in storing up, the water-in of sewage and be with catchmenting of sandy gravel stratum and be provided with between the structures and can prolong waste water, effluent stream water conservancy diversion hurdle through distance at flyash.Prolong runoff and the residence time of sewage in flyash is stored up as far as possible, prolong waste water, sewage and store up the distance of flowing through of field, can improve the decontamination effect improving of sewage at flyash.
The present invention compared with prior art utilizes the industrial waste that the fuel-burning power plant discharges fully and do not add other scavenging agent and purify liquid waste and sewage, fully realized the purpose of the treatment of wastes with processes of wastes against one another, the comprehensive regulation, comprehensive utilization; Utilize fuel-burning power plant flyash discharge engineering facility and need not increase and build a large amount of special engineering facilities and equipment; And the running cost that increase newly in the wastewater treatment process are extremely low.Only need flyash is stored up field transformation a little if build the municipal sewage plant, build a small amount of special engineering facility and specific equipment, do not need land occupation.Built with present China or compared in the secondary biochemical treatment factory that builds, expense for construction is saved 90-95%, and operating charges is saved 70-80%.Technique effect of the present invention has met or exceeded the technique effect of present general secondary biochemical treatment, and the content of water outlet COD also is lower than the emission standard of second-stage treatment, and water outlet can be as the reuse of process water water source.Test-results according to the present invention in the process: COD content less than the city domestic sewage clearance of 200mg/L greater than 80%.Construction investment of the present invention is few, operation cost is low, good purification, and economic benefit, social benefit and environmental benefit are all very remarkable.
Fig. 1 stores up the plot plan of field for the structures that catchment among the present invention adopt collection gallery flyash.
Fig. 2 adopts the vertical sectional view of collection gallery A-A section for the structures that catchment among Fig. 1.
Fig. 3 stores up the plot plan of field for the structures that catchment among the present invention adopt the flyash of draw-well.
Fig. 4 adopts the vertical sectional view of the B-B section of draw-well for the structures that catchment among Fig. 3.
Embodiment one.The following examples have further described summary of the invention of the present invention.Shown in Fig. 1, Fig. 2 show, the flyash that utilizes of present embodiment is handled the method for waste water, sewage, store up field 3 as diafiltration bed and oxidation field with the flyash in fuel-burning power plant, to store up the field through the flyash that the conventional pretreated pending city domestic sewage of grid is transported to the fuel-burning power plant, to make its thickness of flowing through be 1.5 meters fine coal grieshoch 10, diafiltration enters in the structures 5 that catchment that are with sandy gravel stratum 8, again by discharging in the structures 5 that catchment, the catchment drain discharge of structures 5 of adjusting, the rate of percolation that makes sewage be 0.06 meter/per hour.The structures that catchment adopt collection gallery 5, and the inwall 7 of collection gallery 5 is provided with into water space 9, have between the inner wall area and fine coal grieshoch 10 in water space 9 into, are provided with 0.5 meter thick sandy gravel stratum 8.Store up the water-in 1 of 3 sewage at flyash and be with catchmenting of sandy gravel stratum 8 and be provided with between the structures 5 and can prolong waste water, effluent stream wall formula water conservancy diversion hurdle 2,4,6 through distance.After being marched into the arena, sewage makes a circulation to enter collection gallery 5 through fine coal grieshoch 10 by underground.The structure formation of collection gallery 5 as shown in Figure 2, and is wide 1 meter, dark 2 meters, is arranged on flyash field 3 limit portions.
Embodiment two.The following examples continue to describe summary of the invention of the present invention, the flyash that utilizes of present embodiment is handled waste water, the method of sewage, store up field 32 as diafiltration bed and oxidation field with the flyash in fuel-burning power plant, to store up 32 through the flyash that the conventional pretreated special trade effluent of handling of grid be transported to the fuel-burning power plant, to make its thickness of flowing through be 6 meters fine coal grieshoch 37, diafiltration enters the structures 33 that catchment that are with sandy gravel stratum 39,34, in 35, again by the structures 33 that catchment, 34, discharge in 35, the catchment drain discharge of structures of adjusting, make the rate of percolation of waste water be not more than 0.02 meter/per hour.The structures 33,34,35 of catchmenting adopt and draw water also, and the inwall 36 of draw- well 33,34,35 is provided with into water space 38, have between the inner wall area and fine coal grieshoch 37 in water space 38 into, are provided with 1.5 meters thick sandy gravel stratums 39.Pending waste water is transported to earlier in the fine coal ashpit in fuel-burning power plant and is mixed into mortar, by the waterpower ash conveying pipe flyash that mixed mortar is transported to the fuel-burning power plant is stored up the field again with flyash.The pH value that will enter waterpower ash conveying pipe mortar before with spent acid or acid waste water transfers to 6.The structure formation of draw-well as shown in Figure 4,2 meters of its diameters are arranged on flyash field 32 limit portions.
Claims (5)
1, a kind of flyash that utilizes is handled waste water, the method of sewage, it is characterized in that storing up (3,32) as diafiltration bed and oxidation field, with pending waste water with the flyash in fuel-burning power plant, sewage transport is stored up field (3 to the flyash in fuel-burning power plant, 32) make its thickness of flowing through be not less than 1.5 meters fine coal grieshoch (10,37), diafiltration enters the structures (5 that catchment that are with sandy gravel stratum (8,39), 33,34,35) in, again by the structures (5 that catchment, 33,34,35) discharge in, regulate the structures (5 that catchment, 33,34,35) drain discharge makes waste water, the rate of percolation of sewage be not more than 0.06 meter/per hour.
2, the method for utilizing flyash to handle waste water, sewage according to claim 1, structures (5,33 is characterized in that catchmenting, 34,35) inwall (7,36) is provided with into water space (9,38), at inwall (7,36) have between the zone and fine coal grieshoch (10,37) of into water space (9,38), be provided with the thick sandy gravel stratum of 0.5-1.5 rice (8,39).
3, the method for utilizing flyash to handle waste water, sewage according to claim 1, it is characterized in that pending waste water, sewage are transported to earlier in the fine coal ashpit in fuel-burning power plant is mixed into mortar with flyash, by the waterpower ash conveying pipe flyash that mixed mortar is transported to the fuel-burning power plant is stored up the field again.
4, the method for utilizing flyash to handle waste water, sewage according to claim 3 is characterized in that the pH value that will enter waterpower ash conveying pipe mortar before with spent acid or acid waste water transfers to 5-7.
5, the method for utilizing flyash to handle waste water, sewage according to claim 1, it is characterized in that at the water-in (1) of waste water that flyash is stored up, sewage and be with to be provided with between the structures that catchment (5) of sandy gravel stratum (8) prolonging waste water, effluent stream water conservancy diversion hurdle (2 through distance, 4,6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114215A CN1273944A (en) | 1999-05-15 | 1999-05-15 | Process for treating waste water or sewage with powdered coal ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114215A CN1273944A (en) | 1999-05-15 | 1999-05-15 | Process for treating waste water or sewage with powdered coal ash |
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| Publication Number | Publication Date |
|---|---|
| CN1273944A true CN1273944A (en) | 2000-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99114215A Pending CN1273944A (en) | 1999-05-15 | 1999-05-15 | Process for treating waste water or sewage with powdered coal ash |
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| CN (1) | CN1273944A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344552C (en) * | 2005-06-24 | 2007-10-24 | 大连理工大学 | Method and apparatus for treating urban sewage by means of flue gas desulfurization of power plant and fly ash |
| CN101890335A (en) * | 2010-07-20 | 2010-11-24 | 中国科学院水生生物研究所 | Adsorbent for removing earthy and musty odor from water and preparation method |
| CN102845157A (en) * | 2011-06-27 | 2013-01-02 | 张家港市南宝涂料装饰有限公司 | Method for comprehensively utilizing coal ash |
-
1999
- 1999-05-15 CN CN99114215A patent/CN1273944A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344552C (en) * | 2005-06-24 | 2007-10-24 | 大连理工大学 | Method and apparatus for treating urban sewage by means of flue gas desulfurization of power plant and fly ash |
| CN101890335A (en) * | 2010-07-20 | 2010-11-24 | 中国科学院水生生物研究所 | Adsorbent for removing earthy and musty odor from water and preparation method |
| CN102845157A (en) * | 2011-06-27 | 2013-01-02 | 张家港市南宝涂料装饰有限公司 | Method for comprehensively utilizing coal ash |
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