CN1521130A - Treatment system for waste water from exhaust gas desulfurization in gas-electricity generating device - Google Patents
Treatment system for waste water from exhaust gas desulfurization in gas-electricity generating device Download PDFInfo
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- CN1521130A CN1521130A CNA03102467XA CN03102467A CN1521130A CN 1521130 A CN1521130 A CN 1521130A CN A03102467X A CNA03102467X A CN A03102467XA CN 03102467 A CN03102467 A CN 03102467A CN 1521130 A CN1521130 A CN 1521130A
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- waste water
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- feedwater
- sealing groove
- bottom ash
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Abstract
The present invention provides one unique practical system for treating waste water from desulfurizing water gas of steam and electric power co-producing apparatus, separating suspended solid from water and making effluent reach drainage standard. The treating system includes oxidizing tank, boiler water seal tank, bottom ash stirring pond, fast bottom ash depositing pond and waste water tank, and treats the waste water through unique process and control to separate the waste water containing magnesium sulfate and ash sludge into water and sludge. The drained water is suitable for sewage disposal yard to further treat and the ash sludge for reuse.
Description
Technical field
The present invention relates to the Waste Water Treatment after a kind of steam-electric accreting plant waste gases desulfurization is handled, the waste water that steam-electric accreting equipment is produced, can divide dried up really and suspended solids plaster, discharge by discharge outlet again and water can be disposed to general waste water processing station, can conveniently concentrate plaster to do in addition to utilize again and handle the water allow compliance with emission standards of being discharged.
Background technology
Steam-electric accreting equipment is converted to the needs that steam and electric power provide the industry processing procedure to produce with fuel thermal energy, adopts fire coal or fuel oil to make boiler produce steam, can produce smoke evacuation waste gas in the combustion processes.Yet, traditional processing mode to exhaust emission, nothing more than having: (1) collects the dust (powdered carbon or cigarette ash) in the waste gas through dry type control of dust or filtration.This mode is used to collect dust even-granular thing, and (2) through water or solution washing and be wet filter or absorption, utilizes water or solution and stays grey thing and vaporous material in the waste gas.With wet processed, the method for traditional type be will contain sewage, the mud of ash, mode such as carry out three kinds of modes and handle: dry naturally (1), and (2) heat evaporate to dryness, (3) filter material filtered water and obtain the mud or the low mud of water content of mummification; Aforesaid way all has following shortcoming:
(1) dries naturally: need dry the pond greatly, and need great place.
(2) heating evaporate to dryness: the waste thermal source, and, can produce the water vapour of sulfur compound in the process of evaporate to dryness, though there is not flying dust (cigarette ash), but cause the factor of acid rain, also be a kind of environmental pollution.
(3) filter material filters: also filtering equipment need be set, and power drain, and need to consume filter material (periodic replacement), need the normal filter material (otherwise can block) that cleans, also need periodic maintenance, extremely inconvenience.
Summary of the invention
For addressing the above problem, main purpose of the present invention is to provide the Waste Water Treatment after a kind of steam-electric accreting plant waste gases desulfurization is handled, and can reach the saving space, handle fast, separates certain effect.
In order to achieve the above object, the invention provides the Waste Water Treatment after a kind of steam-electric accreting plant waste gases desulfurization is handled, comprise: oxidation trough, feedwater sealing groove, bottom ash agitated pool, rapid sedimentation tank, wastewater trough, the method of its system arrangement, processing is: oxidation trough: sulfur acid magnesium or the magnesium sulfite composition waste water of accepting the steam-electric accreting sweetener, it has aeration performance, and can give stirring, make it to produce oxygenizement, and must make waste water be the Adlerika state; Feedwater sealing groove: bear the magnesium sulfate containing waste water of oxidation trough, and make it to produce the preliminary sedimentation effect, that is to say, ash coagulation in waste water and the boiler water seal, through gravity settling, produce sedimentation effect, upper clear liquid then overflow drains into the bottom ash agitated pool by the lower concentration vent pipe; In addition, feedwater sealing groove bottom is provided with the bottom ash conveying belt that can scrape mud, deals with in addition and mud transferred out; The bottom ash agitated pool: bear the low concentration wastewater that the feedwater sealing groove is discharged, stir, to avoid deposition of dirt, the back is delivered to rapid sedimentation tank by the lower concentration output tube with pumping; Rapid sedimentation tank: the waste water that bears the bottom ash agitated pool, its bottom is provided with the high density vent pipe, be communicated to feedwater sealing groove and pipe and be provided with timing solenoid valve, arrive regularly, timing solenoid valve can be opened automatically, allowing sedimentary mud discharging to feedwater sealing groove do sedimentation again handles, so, can make low concentration wastewater precipitate and separate mud and water once more, be able to be back to again fast initial processing, can be with the water on upper strata more via set waste water outflow pipe, overflow passes to wastewater trough; Wastewater trough: bear the treating water of rapid sedimentation tank upper strata overflow, and can produce sedimentary effect once more, and its bottom is provided with that the lower concentration vent pipe is communicated to the bottom ash agitated pool, higher position is established the wastewater discharge pipe with pumping; The lower concentration of the precipitation once more mud of its generation, can drain into the bottom ash agitated pool is delivered to rapid sedimentation tank again and does another precipitate and separate, feedwater sealing groove separating treatment, the primary water of wastewater trough then is delivered to waste water processing station discharge outlet discharging by pumping: pass through said system, must make the waste water of sulfur acid magnesium, ash, can be repeated and be the precipitate and separate removal of high concentration sludge elder generation, after handling out lower concentration mud again, and then processedly go out high concentration sludge, go round and begin again, isolate and meet the waste water of water emission standard of releasing, and be delivered to the discharging of discharge of wastewater mouth.
According to the above description, design of the present invention has the effect of following uniqueness:
(1) the feedwater sealing groove 2: can make water and high concentration sludge (lime-ash), first initial gross separation makes thereafter pipeline, agitated pool, settling tank, unlikelyly deposits, blocks.
(2) the bottom ash agitated pool 3: have agitating function, avoid sludge settling, and a kind of relay station, the function of processing station repeatedly must be provided, make waste water when draining into waste water field 6, can be recycled to rapid sedimentation tank 4 herein repeatedly, promote and quicken isolating effect.
(3) rapid sedimentation tank 4: it has reppd function, especially, being provided with timing solenoid valve 42 can regularly open, therefore, the precipitable high concentration sludge that obtains, and can not deposit, and regularly flow back to feedwater sealing groove 2, this design fast, divide effect dried up, mud once more except having, cause is open and close regularly, thereby can collect high concentration sludge really and send processing more fast back to, and quickens separated sludge and water.
(4) wastewater trough 5: because of being provided with lower concentration return line 51, and can collect lower concentration mud once more before waste discharge, and the precipitation once more that refluxes once more obtains high concentration sludge again, makes the water in the wastewater trough reach more clarifying effect.
(5) the present invention is the circulation separating treatment of automatization, unrestricted number of times, is a kind of extremely unique system design.
(6) the present invention can make the waste water of sulfur compound plaster (mud) under the situation that does not need big place, forms centrifugation, and is repeatedly circular treatment, reaches emission standard and just discharges, and has the characteristics of province place, cost-saving, less manpower, high cleanliness.
Description of drawings
Fig. 1 is the system flow synoptic diagram of Waste Water Treatment of the present invention.
Nomenclature among the figure
1 oxidation trough, 41 high density vent pipes
2 feedwater sealing grooves, 42 timing solenoid valves
20 bottom ash conveying belt, 5 wastewater troughs
3 bottom ash agitated pools, 50 wastewater discharge pipes
30 lower concentration output tubes, 51 lower concentration return lines
4 rapid sedimentation tanks, 6 waste water fields
40 waste water outflow pipe MP1, MP2 pumping
Embodiment
Following conjunction with figs. describes formation, flow process, effect, the effect of Waste Water Treatment of the present invention in detail.
As shown in Figure 1, Waste Water Treatment of the present invention comprises: oxidation trough 1, feedwater sealing groove 2, bottom ash agitated pool 3, rapid sedimentation tank 4, wastewater trough 5, and the method for its system arrangement, processing is:
Oxidation trough 1: accept the sulfur acid magnesium or the magnesium sulfite composition waste water of steam-electric accreting sweetener, it has aeration performance, can stir, and makes it to produce oxygenizement, and makes waste water be sal epsom (MgSO
4) solution state;
Feedwater sealing groove 2: bear the magnesium sulfate containing waste water of oxidation trough 1, make it to produce the preliminary sedimentation effect, that is to say, ash coagulation in waste water and the boiler water seal, through gravity settling, produce sedimentation effect, upper clear liquid then overflow drains into bottom ash agitated pool 3 by lower concentration vent pipe 21; In addition, feedwater sealing groove 2 bottoms are provided with the bottom ash conveying belt 20 that can scrape mud, deal with (this sludge treatment technology, non-the present patent application content will not be given unnecessary details) and mud transferred out in addition;
Bottom ash agitated pool 3: bear the low concentration wastewater that feedwater sealing groove 2 is discharged, stir, to avoid deposition of dirt, the back is delivered to rapid sedimentation tank 4 by the lower concentration output tube 30 with pumping MP1;
Rapid sedimentation tank 4: the waste water that bears bottom ash agitated pool 3, its bottom is provided with high density vent pipe 41 and is communicated to feedwater sealing groove 2, and this pipe is provided with timing solenoid valve 42, reaches regularly, timing solenoid valve 42 can be opened automatically, allow sedimentary mud discharging to feedwater sealing groove 2 do sedimentation again and handle, so, can make low concentration wastewater precipitate and separate mud and water once more, can be back to initial processing fast again, and, can be circulated to wastewater trough 5 with the water on upper strata more via set waste water discharger 40;
Wastewater trough 5: bear the treating water of rapid sedimentation tank 4 upper strata overflows, and can produce sedimentary effect once more, and its bottom is provided with that lower concentration vent pipe 51 is communicated to bottom ash agitated pool 3, higher position is established the wastewater discharge pipe 50 with pumping MP2; The lower concentration of the precipitation once more mud of its generation can drain into bottom ash agitated pool 3 and be delivered to rapid sedimentation tank 4 again and do another precipitate and separate, feedwater sealing groove 2 separating treatment, and the primary water of wastewater trough 5 then is delivered to waste water processing station 6 discharge outlets discharging by pumping MP2;
Below effect of the present invention, effect, advantage are further described:
As shown in Figure 1, handle the magnesium sulfate containing waste water that steam-electric accreting plant waste gases sweetener is produced, input oxidation trough 1, and carry out aeration agitation, make magnesium sulfite produce oxidation and be sal epsom, then, flowing into feedwater sealing groove 2 handles, and the effect of generation preliminary sedimentation, can take mud earlier out of by the bottom ash conveying belt 20 of bottom, the upper strata sewage of low concentration then exports bottom ash agitated pool 3 to, (avoids being deposited in the pond after evenly stirring again, and need sneak into 5 isolated sewage of low concentration of wastewater trough again), via the extraction of pumping MP1, lower concentration output tube 30, and be delivered to rapid sedimentation tank 4, pass through primary sedimentation again again, and by its high density vent pipe 41 with the sedimentary mud of institute, be expelled to initial feedwater sealing groove 2 to handle again, that is to say, can get and isolate the mud of high density by rapid sedimentation tank 4, clarifying waste water;
Above-mentioned high concentration sludge is done to utilize in addition again to be handled, and the clarifying waste water in upper strata, overflow from the upper strata, flow to wastewater trough 5 via waste water outflow pipe 40, at this moment, again precipitating action can be arranged once more, and flow to bottom ash agitated pool 3 by the lower concentration return line 51 of its bottom, and pumped once more to rapid sedimentation tank 4 and handled, so go round and begin again, can make the clarified wastewater in the wastewater trough 5 reach emission standard, drain into the discharging of waste water field by wastewater discharge pipe 50 through the pumping of pumping MP2.
In sum, system design of the present invention in the steam-electric accreting apparatus field, be unprecedented creation, and the effect that is reached has fabulous industry practical value, special proposition patent application.
Claims (1)
1, the Waste Water Treatment after a kind of steam-electric accreting plant waste gases desulfurization is handled, comprise: oxidation trough, feedwater sealing groove, bottom ash agitated pool, rapid sedimentation tank, wastewater trough is characterized in that the method for its system arrangement, processing is:
Oxidation trough: accept the sulfur acid magnesium or the magnesium sulfite composition waste water of steam-electric accreting sweetener, it has aeration performance, and can give stirring, makes it to produce oxygenizement, and must make waste water be the Adlerika state;
Feedwater sealing groove: bear the magnesium sulfate containing waste water of oxidation trough, and make it to produce the preliminary sedimentation effect, that is to say, ash coagulation in waste water and the boiler water seal, through gravity settling, produce sedimentation effect, upper clear liquid then overflow drains into the bottom ash agitated pool by the lower concentration vent pipe; In addition, feedwater sealing groove bottom is provided with the bottom ash conveying belt that can scrape mud, deals with in addition and mud transferred out;
The bottom ash agitated pool: bear the low concentration wastewater that the feedwater sealing groove is discharged, stir, to avoid deposition of dirt, the back is delivered to rapid sedimentation tank by the lower concentration output tube with pumping;
Rapid sedimentation tank: the waste water that bears the bottom ash agitated pool, its bottom is provided with the high density vent pipe, be communicated to feedwater sealing groove and pipe and be provided with timing solenoid valve, arrive regularly, timing solenoid valve can be opened automatically, allowing sedimentary mud discharging to feedwater sealing groove do sedimentation again handles, so, can make low concentration wastewater precipitate and separate mud and water once more, be able to be back to again fast initial processing, can be with the water on upper strata more via set waste water outflow pipe, overflow passes to wastewater trough;
Wastewater trough: bear the treating water of rapid sedimentation tank upper strata overflow, and can produce sedimentary effect once more, and its bottom is provided with that the lower concentration vent pipe is communicated to the bottom ash agitated pool, higher position is established the wastewater discharge pipe with pumping; The lower concentration of the precipitation once more mud of its generation can drain into the bottom ash agitated pool and be delivered to rapid sedimentation tank again and do another precipitate and separate, feedwater sealing groove separating treatment, and the primary water of wastewater trough then is delivered to waste water processing station discharge outlet discharging by pumping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03102467XA CN1318318C (en) | 2003-01-27 | 2003-01-27 | Treatment system for waste water from exhaust gas desulfurization in gas-electricity generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03102467XA CN1318318C (en) | 2003-01-27 | 2003-01-27 | Treatment system for waste water from exhaust gas desulfurization in gas-electricity generating device |
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| Publication Number | Publication Date |
|---|---|
| CN1521130A true CN1521130A (en) | 2004-08-18 |
| CN1318318C CN1318318C (en) | 2007-05-30 |
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|---|---|---|---|
| CNB03102467XA Expired - Fee Related CN1318318C (en) | 2003-01-27 | 2003-01-27 | Treatment system for waste water from exhaust gas desulfurization in gas-electricity generating device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015035681A1 (en) * | 2013-09-16 | 2015-03-19 | 大连海事大学 | Device and method for treating desulfurization wastewater of ships |
| CN110078249A (en) * | 2018-01-25 | 2019-08-02 | 宝山钢铁股份有限公司 | Remove the deep treatment method and system of COD and total iron in power plant desulfurization wastewater |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1190165A (en) * | 1997-09-19 | 1999-04-06 | Mitsubishi Heavy Ind Ltd | Treatment of waste water from flue gas desulfurization |
| EP1106237B1 (en) * | 1999-05-17 | 2004-10-13 | Mitsubishi Heavy Industries, Ltd. | Method of treating waste waters from a flue gas desulphuriser |
| TW508264B (en) * | 2001-12-25 | 2002-11-01 | Long Chen Paper Co Ltd | Discharge and regeneration system for cogeneration desulfurization device with zero discharge |
-
2003
- 2003-01-27 CN CNB03102467XA patent/CN1318318C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015035681A1 (en) * | 2013-09-16 | 2015-03-19 | 大连海事大学 | Device and method for treating desulfurization wastewater of ships |
| CN110078249A (en) * | 2018-01-25 | 2019-08-02 | 宝山钢铁股份有限公司 | Remove the deep treatment method and system of COD and total iron in power plant desulfurization wastewater |
| CN110078249B (en) * | 2018-01-25 | 2022-03-18 | 宝山钢铁股份有限公司 | Advanced treatment method and system for removing COD (chemical oxygen demand) and total iron in desulfurization wastewater of power plant |
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| Publication number | Publication date |
|---|---|
| CN1318318C (en) | 2007-05-30 |
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Granted publication date: 20070530 Termination date: 20100301 |