CN100344552C - Method and apparatus for treating urban sewage by means of flue gas desulfurization of power plant and fly ash - Google Patents
Method and apparatus for treating urban sewage by means of flue gas desulfurization of power plant and fly ash Download PDFInfo
- Publication number
- CN100344552C CN100344552C CNB2005102003490A CN200510200349A CN100344552C CN 100344552 C CN100344552 C CN 100344552C CN B2005102003490 A CNB2005102003490 A CN B2005102003490A CN 200510200349 A CN200510200349 A CN 200510200349A CN 100344552 C CN100344552 C CN 100344552C
- Authority
- CN
- China
- Prior art keywords
- treatment
- pipeline
- flue gas
- fly ash
- sewage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 43
- 239000010881 fly ash Substances 0.000 title claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000003546 flue gas Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000006477 desulfuration reaction Methods 0.000 title claims description 18
- 230000023556 desulfurization Effects 0.000 title claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 28
- 238000004064 recycling Methods 0.000 claims abstract description 16
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 239000004568 cement Substances 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 230000015271 coagulation Effects 0.000 claims description 12
- 238000005345 coagulation Methods 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 239000000701 coagulant Substances 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 230000008635 plant growth Effects 0.000 claims description 7
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 6
- 239000011790 ferrous sulphate Substances 0.000 claims description 6
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 6
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 6
- 244000005700 microbiome Species 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 230000012010 growth Effects 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 2
- 239000001569 carbon dioxide Substances 0.000 claims 2
- 238000005453 pelletization Methods 0.000 claims 2
- 241000257163 Calliphora vicina Species 0.000 claims 1
- 239000010883 coal ash Substances 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 claims 1
- 150000002505 iron Chemical class 0.000 claims 1
- 239000005416 organic matter Substances 0.000 claims 1
- 230000029553 photosynthesis Effects 0.000 claims 1
- 238000010672 photosynthesis Methods 0.000 claims 1
- 231100000719 pollutant Toxicity 0.000 claims 1
- 238000004321 preservation Methods 0.000 claims 1
- 230000029058 respiratory gaseous exchange Effects 0.000 claims 1
- 238000009423 ventilation Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 10
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 239000006227 byproduct Substances 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000002440 industrial waste Substances 0.000 abstract description 2
- 239000002912 waste gas Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 14
- 239000002956 ash Substances 0.000 description 5
- 235000011089 carbon dioxide Nutrition 0.000 description 5
- 230000009183 running Effects 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 3
- 241000233948 Typha Species 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000003203 everyday effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241001529246 Platymiscium Species 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 235000003599 food sweetener Nutrition 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003765 sweetening agent Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Treating Waste Gases (AREA)
Abstract
城市污水的资源化、电厂烟气中二氧化硫的资源化及粉煤灰的资源化方法与设备属于环境工程中废水、废气、废渣处理与综合利用的新型生态工程技术领域。根据生态学原理，物质的循环、能量的流动、信息的传递是生态系统的主要功能。利用工业废弃物，并且将水、气、渣的处理结合于一体。本发明所能达到的有益效果是：城市污水的生态化处理及回用达到国家中水回用标准；节约运行费4-5倍；回收植物性副产物；解决粉煤灰的堆放问题；采用经济有效地处理技术，使城市污水处理率、处理达标率和回用率都有极大提高，保护了我国水环境及大气环境，带来极大的环境和社会效益。主要适用于有粉煤灰、燃煤烟气来源地区的城市污水综合处理。
The method and equipment for the recycling of urban sewage, the recycling of sulfur dioxide in the flue gas of power plants, and the recycling of fly ash belong to the new ecological engineering technology field of wastewater, waste gas, and waste residue treatment and comprehensive utilization in environmental engineering. According to the principles of ecology, the circulation of matter, the flow of energy, and the transmission of information are the main functions of an ecosystem. Utilize industrial waste and combine the treatment of water, gas and slag. The beneficial effects that can be achieved by the present invention are: the ecological treatment and reuse of urban sewage meet the national reclaimed water reuse standard; save 4-5 times of operating costs; recycle plant by-products; solve the problem of stacking fly ash; Economical and effective treatment technology has greatly improved the urban sewage treatment rate, treatment compliance rate and reuse rate, protected my country's water environment and atmospheric environment, and brought great environmental and social benefits. It is mainly suitable for the comprehensive treatment of urban sewage in areas with sources of fly ash and coal-fired flue gas.
Description
Technical field
The invention belongs to the novel ecological field of engineering technology that waste water,waste gas and industrial residue is handled and fully utilized in the environmental engineering.
Background technology
Guangming Daily and other newspapers have all been reprinted the problem that the deputy bureau director Wang Jirong of State Environmental Protection Administration is found to China municipal sewage plant running condition special examination of medium circular in July, 2004: 532 sewage works that checked, 275 abnormal runnings are arranged, account for 51.7%.Wherein, 43 basic abnormal operations account for 8.1%; 121 of operating load less than 30% account for 22.7%; 111 of exceeding standard of water outlet account for 20.9%, and the fate that on average exceeds standard is 152 days.These 532 sewage work's designing treatment abilities are 145.6 hundred million tons, and 95.9 hundred million tons of actual treatment abilities only are 65.9% of designed capacity; Exceed standard in 111 sewage works of blowdown, what total phosphorus and total nitrogen exceeded standard accounts for more than 60%, becomes main pollution factor.Although it is many-sided causing the reason of the problems referred to above, the investment of sewage treatment process and working cost height are the keys of problem.Bear relatively difficulty of sewage disposal expense by municipal administration fully, and bear the not smooth problem of existence charge channel, thereby operational difficulty is bigger by operation company.Therefore, fundamentally solve sewage handling problem and just must develop the processing unit that investment is little, working cost is low, and working hard aspect the execution of management and environmental legislation.
Simultaneously; State Environmental Protection Administration has announced China's ten big atmospheric pollution city lists first in environmental management of national environmental protection key cities and comprehensive improvement annual report; wherein great majority are the city that coal and energy industry are concentrated, and sulfurous gas becomes important pollution factor in the zone.The generation of trade waste corresponding with it is also more, particularly the output of trade waste such as flyash is occupied critical role, how to reduce atmospheric pollution level, makes full use of trade waste, and the processing of water, gas, slag is incorporated into one, is basic point of departure of the present invention.
Summary of the invention
Purpose of the present invention just provides a kind of minimizing topsoil, makes full use of trade waste, and the processing of water, gas, slag is incorporated into sulfurous gas resource utilization and Ash Utilization method and apparatus in the municipal sewage as a resource, power-plant flue gas of one
Technical solution of the present invention is that according to ecological principle, the transmission mobile, information of the circulation of material, energy is the major function of the ecosystem.Municipal sewage treatment proposed by the invention and means of flue gas desulfurization of power plant and Ash Utilization technology just are being based on ecological principle and the ecological treatment system developed with equipment.Its basic craft course is summarized as follows:
Municipal effluent and contain part processing up to standard after industrial sewage, collect and to be transported to area with coal-fired flue-gas source, as pending sewage, carry out homogeneous and adjusting simultaneously;
This sewage enters pretreatment stage then, utilize the inorganic molysite coagulating agent of by-product in the flue gas desulfurization course to carry out coagulating treatment, we apply for a patent, patent No. ZL00101556.7, after removing suspended particle contact scar thing and colloid pollution thing, prepare to enter ecological treatment system;
This ecological treatment system adopts plant-microorganism alternate treatment system, and in order to guarantee normally to move in the winter time, adopt printing opacity greenhouse 22 structure formations, insulation utilizes the gas behind the coal desulfurization, both can reach the purpose of Winter protection, can be plant-growth again competent carbonic acid gas is provided, simultaneously can also provide oxygen for microorganism growth, during treatment system employing water distribution manner at intermittence, microbial film can absorb oxygen from flue gas, and the used filler 20 of this treatment system is made after utilizing coal-fired waste residue flyash just and cement mixing by a certain percentage, at last, this device is gone back by-product wetland plant series products 21: economic grass, and flowers, or the like;
Through the water after this system handles following purposes can be arranged: agricultural water, the forestry water, urban afforestation water, building water, the process advanced treatment contains can be used for industrial circulating cooling water and particular industry water, and China's shortage of water resources is significant for alleviating;
The used filler 20 of this treatment system is granular, diameter is between the 3-10 millimeter, material is for based on flyash, the vesicular inert substance that is prepared into as solidifying agent with cement in addition, be with coal-fired waste residue flyash and cement by 3: 1-6: make after 1 the mixed; Have good biological attachment power and bigger specific surface area, also help the transmission of oxygen simultaneously;
The gas temperature that is used for Winter protection in this system is at 30-40 ℃, derive from the tail gas behind the coal-fired flue gas desulfurization, contain the oxygen of 5-10% and the carbonic acid gas of 4-8%, can guarantee that the unitary temperature of Ecological Disposal is at 20-30 ℃ winter, can use summer in the same old way, this gas is except heat insulation function, containing to provide competent carbonic acid gas for plant-growth, promote photosynthetic carrying out daytime, provide certain oxygen for plant and microorganism evening, promote its respiratory, promote organic decomposition course;
The coal burning system that this system relied on, discharge a large amount of flue gas that contains sulfurous gas, oxynitride and solid waste-flyash, wherein sulfurous gas has become the greatest contamination factor of China's topsoil and acid rain, we have developed resource recovery FGD process technology, patent No. ZL00101556.7, utilize industrial waste iron filing as sweetening agent, by-product is the inorganic molysite coagulating agent of main component with ferric sulfate, both can solve the sulfur dioxide emissions problem, recyclable again sulphur resource and iron resources are used for sewage disposal and need a large amount of coagulation process that use;
The flyash of coal burning system discharging is used for the production of filler, it is another important feature of the present invention, it is to utilize trade waste to realize the canonical process of resource utilization, the chemical stability of flyash provides possibility for using as filler in the water treatment, certain processing technique makes it to become the graininess filler of different performance and specification again, can replace the ceramics filling of present widespread use.
In this system, the water distribution manner of sewage can be adjusted flexibly according to disposition, the one, the cloth water yield can change between 0.01 cubic metre/(day square metre)-0.5 cubic metre/(day square metre), the 2nd, the cloth water depth can change, adopt surperficial water distribution summer, adopt the following water distribution of frozen soil layer winter, the 3rd, the water distribution cycle can change: every day, water distribution was 1-4 time.By above-mentioned adjustment, reach best oxygen and utilize effect and wastewater treatment efficiency;
In this system, the plant of being quoted is the temperature tolerance water tolerance rank vegetation, and it not only fully absorbs the carbonic acid gas in the flue gas, reduces the discharging of greenhouse gases, and for plant-growth produces certain oxygen, its rhizosphere also can discharge the utilization of certain oxygen for microorganism; Because the abundance of temperature controlling and moisture content nutrient, plant-growth is rapid, can obtain valuable by product.
The microorganism that this system introduced is except conventional microorganism, and the special bacterial classification of degradation of contaminant and genetically engineered bacterial classification fast in addition can be realized the purpose of fast processing sewage, reduce the floor space of whole ecological treatment facility.
The major equipment of this invention is as follows:
This device is made up of sulfur dioxide in flue gas off gas treatment and recycling unit, Ash Utilization device and sewage disposal and three parts of recycling unit.
A. sulfur dioxide in flue gas off gas treatment and recycling unit.This device comprises flue gas desulfurization (FGD) unit and ferrous sulfate preparation facilities two portions.Flue gas desulfurization (FGD) unit: exhaust pipe is connected with baffle plate bottom, absorption tower Ta Bi through air pump 2.Two absorption towers 5 connect with serial arrangement, go out on wherein advancing under the vent line, go out under water-filled pipe is enterprising.The air outlet on second absorption tower links to each other by the road with scum dredger 1, and the exhaust of scum dredger is input in the Ecological Disposal unit 23 by the road.The ferrous sulfate preparation facilities: the absorption liquid liquid discharge pipe on first absorption tower and dosing tank 7 rising pipes enter in the mixing tank 8 jointly, mix back liquid and enter settling tank 9 by the road.Settling tank bottom bucket links to each other with water extracter 19 by the road, and the post precipitation supernatant liquor enters iron filings reactor 11 through overflow port place pipeline.The reaction unit water outlet links to each other with water extracter 10, and the liquid after the dehydration enters iron filings reactor 11 once more.
B. flyash is handled and recycling unit.Flyash pipeline, cement pipeline and additive pipeline are connected on flyash storehouse 25, cement bin 31 and the additive gauger 30.Flyash storehouse 25 links to each other with cement batcher 32 with flyash gauger 26 respectively with cement bin 31.Flyash gauger, cement batcher and additive gauger are connected with homogenizing mixing device 27 by the road jointly, and the middle water reuse pipe of ecological treatment apparatus is laid on device top.The outlet that mixes homogenization device be connected ball maker and pan-pelletizer 28, pan-pelletizer exit connection solidification device 33.Gas discharge outlet place on solidification device top connects sack cleaner 29, and the finished product of pan-pelletizer transports sorter 34 by the road to, input Ecological Disposal unit 23 after the sorting.
C. sewage disposal and recycling unit.Sewage arrives grid 14 through waste pipe, and the sewage mouth of grid bottom arrives sump pump 15 by the road.Sump pump is connected to settling tank 16 tops by the road, and the precipitation supernatant liquor transfers to coagulation device 17 through overflow by pipeline.Coagulation device top is laid with the ferrous sulfate flocculation agent for preparing in the flue gas desulphurization system and adds pipe, and behind the coagulation, supernatant liquor flows into second pond 18 through spillway.The supernatant liquor of second pond feeds in the Ecological Disposal unit 23 10 centimeters under the packing layer through outlet pipeline.Sludge drainage system is all arranged at settling tank, coagulation basin and second pond bottom, and mud enters water extracter 19 through the mud pipeline, and after the processing, mud cake is discharged, and the bilge discharge pipe road is connected to second pond 18 tops.Ecological Disposal unit 23 rising pipes are on filler top, and rising pipe is connected to network of rivers network in the municipal administration, flue gas desulfurization (FGD) unit and flyash processing unit (plant) through water pump 24.
These three devices are realized combination in the Ecological Disposal unit.Purging sulfur dioxide gas provides necessary heat of plant and carbonic acid gas for ecological processing unit, and flyash is handled with recycling unit and provided filler for artificial swamp, and sewage provides the water source for wet land system.Simultaneously, handle reuse water afterwards and can be used as SO
2Absorption liquid also can be used as urban afforestation, carwash, flushing supply, solves the not enough problem of China's water resources.
The beneficial effect that the present invention can reach is: the ecology of municipal effluent is handled and reuse, and former water COD=300-500mg/l handles back COD less than 50mg/l, reaches national standard for recycled water after; The floor space of sewage reason is: 0.5 square meter/(ton water * days); It is 50,000 square meters that day is handled 100,000 tons of sewage floor spaces; Construction cost calculates according to 2000 yuan/square meter floor space, and construction investment is 100,000,000 yuan, and conventional sewage work ton water is made an investment in 1500-1800 unit/(ton water * days), and day 100,000 tons of investments of processing are hundred million yuan of 1.5-1.8; Present technique ton water current consumption only is 0.1 degree, need not aeration, and therefore handling running cost can be controlled at 0.1-0.2 unit/ton water, and conventional municipal sewage treatment running cost is saved running cost 4-5 doubly at 0.5-0.8 unit/ton water; This technology can reclaim the vegetalitas by product, and its economic worth is different and different with kind; Water during this technology is recyclable is used for various target, and ton water income can reach 0.3-0.5 unit; This Technology can solve the stacking problem of flyash, reduce to take up an area of 50,000 square metres, and every square metre according to 10 yuan of calculating, saves 500,000 yuan of land charges, and its indirect economic effect can't be estimated; The more important thing is, adopted treatment technology cost-effectively, make treatment rate of domestic sewage, processing compliance rate and reclamation rate that very big raising all be arranged, protected China's water surrounding and atmospheric environment, bring great environment and social benefit.
Description of drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is sulfurous gas resource utilization and an Ash Utilization associated plant in municipal sewage treatment of the present invention and resource utilization, the power-plant flue gas.
Fig. 2 is processed to the processing unit (plant) refinement figure of filler for Ash Utilization of the present invention.
Fig. 3 is waste residue of the present invention, off gas treatment and resource utilization schema.
Fig. 4 is wastewater treatment of the present invention and resource utilization schema.
Among the figure, 1. scum dredger, 2. air pump, 3. flyash filler processing unit (plant), 4. shower nozzle, 5. absorption tower, 6. filler, 7. dosing tank, 8. mixing tank, 9. settling tank, 10. water extracter, 11. iron filings reactors, 12. absorb liquid baths, 13.FeSO
4Liquid pump, 14. grids, 15. sump pumps, 16. settling tanks, 17. coagulation device, 18. second ponds, 19. water extracters, 20. fillers, 21. wetland plant, 22. printing opacity greenhouses, 23. Ecological Disposal unit, 24. water pumps, 25. the flyash storehouse, 26. flyash gaugers, 27. mix homogenization device, 28. ball maker and pan-pelletizers, 29. sack cleaner, 30. additive gaugers, 31. cement bins, 32. cement batcher, 33. solidification devices, 34. sorters.
Embodiment
Design considerations: day processing water yield: 100,000 tons; Former water COD concentration: 400mg/l; Handle back COD concentration: 50mg/l SO 2 from fume concentration; The 500mg/ standard cubic meter; Flue gas after desulfurization sulfur dioxide concentration: 50mg/ standard cubic meter; Preceding temperature: 70-100 ℃ of flue gas desulfurization; Temperature after the flue gas desulfurization: 30-40 ℃; Ecological Disposal cell temperature: summer: 30-35 ℃; Winter: 25-30 ℃;
Processing parameter calculates:
1. settling tank 16: the residence time: 4 hours, 1.7 ten thousand steres were built in below the Ecological Disposal unit.
2. coagulation basin 17: dosing coagulant: 200mg/l; Consumption: 20 tons/day; Amount to 4 tons/day of effective iron amounts; Coagulation reactor: the residence time: 0.2 hour; 800 cubic metres; Second pond 18: 1.5 hours residence time swash plate, volume: 6250 cubic metres, be built under the Ecological Disposal unit.
3. Ecological Disposal unit: 24 hours residence time; Useful volume: 10 ten thousand steres; Available depth: 2.0 meters, floor space 50,000 square meters; , be built in 2 meters of the sewage equalizing tank depth of waters under it, 1.7 meters of available depths, 1.7 ten thousand steres/1.7 meter=10000 square meters; The coagulant precipitation tank depth that is built under it is 2 meters, 1.7 meters of available depths, floor space: 6250/2=3125 square meter; The Ecological Disposal unit is semi-underground structure, 7 meters of total heights; Underground 3 meters, 4 meters on the ground; In 7 meters total heights, equalizing tank etc. account for 2 meters; 2.5 meters on Ecological Disposal layer; 2.5 meters of top soils; The plant-growth of Ecological Disposal unit partly adopts girder steel skeleton and light transmissive material to build up.
4. wetland plant 21 kinds: the kind of wetland economic plants will be used local resistant, moisture-proof and the strong plant of root oxygen carrying capacity according to the different situation of each department as far as possible.Use plant to be reed and cattail in this example, reed is perennial Gramineae reed platymiscium, and cattail is a Typhaceae typha crop.
5. required insulation exhaust gas volumn is: the plant-growth space: 12.5 ten thousand steres; Gas residence time: 2 hours; The flue gas requirement: 6.25 ten thousand steres/hour;
6. flue gas desulfurization and prepare the amount of sulfur dioxide that coagulating agent removes and calculate: effective iron loss amount of every day is 4 tons of iron/skies as previously mentioned; Be equivalent to 71428 moles iron/skies according to 56 calculating of ferro element nucleidic mass, because iron and sulfurous gas mol ratio are 1: 1 in the coagulating agent, so corresponding sulfur dioxide removal amount also is 71428 moles/day, the sulfur dioxide molecule amount is 64, and then its amount of removing is 4.5 tons of sulfurous gas/skies; Removing amount of sulfur dioxide according to every standard cubic meter is 0.45 gram, and promptly 500mg/ cube is removed to 50mg/ cube, but every day, the smoke treatment amount was 4500000 grams/0.45 gram=1000 cubic meters per day.
7. the Ecological Disposal filler amounts to 10 ten thousand steres, and tap density is 1.0 kg/liter, needs 100,000 tons of fillers, and the preparation filler consumes 80,000 tons in flyash, makes packing material size 3-6 millimeter.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005102003490A CN100344552C (en) | 2005-06-24 | 2005-06-24 | Method and apparatus for treating urban sewage by means of flue gas desulfurization of power plant and fly ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005102003490A CN100344552C (en) | 2005-06-24 | 2005-06-24 | Method and apparatus for treating urban sewage by means of flue gas desulfurization of power plant and fly ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1699208A CN1699208A (en) | 2005-11-23 |
| CN100344552C true CN100344552C (en) | 2007-10-24 |
Family
ID=35475493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005102003490A Expired - Fee Related CN100344552C (en) | 2005-06-24 | 2005-06-24 | Method and apparatus for treating urban sewage by means of flue gas desulfurization of power plant and fly ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100344552C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410185C (en) * | 2006-09-01 | 2008-08-13 | 清华大学 | A composite fly ash filler, its preparation method and application |
| CN102233236A (en) * | 2010-04-28 | 2011-11-09 | 余蜀翔 | Plant light carbon synthesis oxygen release device |
| CN102485663A (en) * | 2011-03-10 | 2012-06-06 | 中国环境科学研究院 | A kind of artificial wetland composite filler for water treatment and its preparation method |
| KR101801530B1 (en) * | 2015-09-16 | 2017-12-20 | 한국전력공사 | Apparatus for treating coal ash and treatment method for coal ash |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273944A (en) * | 1999-05-15 | 2000-11-22 | 张义之 | Process for treating waste water or sewage with powdered coal ash |
| CN1102422C (en) * | 2000-01-18 | 2003-03-05 | 大连理工大学 | Flue gas wet desulfuration and denitration purification process |
-
2005
- 2005-06-24 CN CNB2005102003490A patent/CN100344552C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273944A (en) * | 1999-05-15 | 2000-11-22 | 张义之 | Process for treating waste water or sewage with powdered coal ash |
| CN1102422C (en) * | 2000-01-18 | 2003-03-05 | 大连理工大学 | Flue gas wet desulfuration and denitration purification process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1699208A (en) | 2005-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104773929B (en) | Zero-valent iron/microorganism composite filtration wall purification system for domestic sewage in irrigation areas | |
| CN101397178B (en) | Livestock and poultry raising sewage disposal process and disposal system thereof | |
| CN1292999C (en) | Efficient ecological waste water treating apparatus and method | |
| CN102775019B (en) | Coupling type sewage de-phosphorization purification regeneration treatment technique | |
| CN1868926A (en) | Composite ecological treatment method of sewage for artificial wet land and its system | |
| CN204874202U (en) | High load capacity rain flood lasts reinforces process systems who purifies | |
| CN102151548B (en) | Adsorption material for treating phosphorus wastewater and use thereof | |
| CN102775020B (en) | Coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently | |
| CN102775021B (en) | A method for advanced treatment of high-concentration phosphorus sewage and phosphorus recovery and utilization | |
| CN100434371C (en) | A kind of ecological ditch sewage purification method | |
| CN109574233B (en) | A constructed wetland system adding zeolite-loaded nano-zero valent iron | |
| CN102583886B (en) | Artificial wetland for treating sewage | |
| CN102910781A (en) | Compound treatment system for nitrogen and phosphorus removal of municipal wastewater and treatment method of system | |
| CN104961297A (en) | Integrated sewage bio-treatment column | |
| CN111253001A (en) | Domestic sewage treatment device and treatment method thereof | |
| CN100344552C (en) | Method and apparatus for treating urban sewage by means of flue gas desulfurization of power plant and fly ash | |
| CN201581027U (en) | Purification device for treating river sewage | |
| CN105621786A (en) | Upwelling vertical constructed wetland system for treating agricultural non-point source pollution | |
| CN107529525A (en) | A kind for the treatment of method for rural sewage and system | |
| CN117658325A (en) | Fresh landfill leachate anaerobic-AOAO multi-circulation treatment system and method | |
| CN116813123A (en) | Method for compositely treating culture tail water by magnetic biological efficient flocculation coupling bacteria and algae | |
| CN214936193U (en) | Carbon neutralization ecological treatment device for sewage and wastewater of refuse transfer station | |
| CN107529524A (en) | A kind for the treatment of method for rural sewage and system | |
| CN1305780C (en) | Four-segment type sewage treatment system for dispersed residences | |
| CN207845462U (en) | A kind of biomass resource comprehensive exploitation application system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071024 Termination date: 20200624 |