CN202237750U - Odor pollutant control system in city sludge drying process - Google Patents
Odor pollutant control system in city sludge drying process Download PDFInfo
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- CN202237750U CN202237750U CN2011203124597U CN201120312459U CN202237750U CN 202237750 U CN202237750 U CN 202237750U CN 2011203124597 U CN2011203124597 U CN 2011203124597U CN 201120312459 U CN201120312459 U CN 201120312459U CN 202237750 U CN202237750 U CN 202237750U
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- tail gas
- condenser
- pipeline
- sludge
- drying process
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Abstract
The utility model discloses an odor pollutant control system in a city sludge drying process. Sludge in a wet sludge storage chamber enters into a blade type dryer through a sludge feeder. Vapor generated by an exhaust-heat boiler is connected with the blade type dryer by a main vapor pipeline, wherein condensed water is sent to the exhaust-heat boiler by a water feed pump through a vapor condensed water pipeline; dried tail gas generated in sludge drying is connected with a condenser through a dried tail gas pipeline; cooling water enters into the condenser through a water pipe so as to cool the dried tail gas and is discharged by a water outlet pipe; a waste liquid collection pool is assorted with the condenser; the condenser is connected with a chemical washing tower through a condensed tail gas pipeline; the chemical washing tower is connected with an active carbon adsorption box through a washed pipeline; and the purified tail gas is discharged into a chimney by a draught fan through an adsorbed tail gas pipeline and an air quantity control valve. After the treatment is carried out by the system disclosed by the utility model, the concentration of the odor pollutant in the tail gas of the sludge is far less than the concentration in the emission standard of the national regulation, and no odor is absolutely generated in the whole drying field.
Description
Technical field
The utility model relates to a kind of mud drying process exhaust treatment system, especially relates to odorant pollutant control system in a kind of municipal sludge drying process.
Background technology
Along with the quickening of Urbanization in China, sewage load is in continuous increase.According to statistics, China's municipal sewage treatment amount 244 * 10 in 2010
8m
3Consequent mud (in moisture content 80%) reaches 1,220 ten thousand tons.Contain various germs in the mud, heavy metal and persistence organic pollutant, and perishable, strong stink is arranged, as not dealing carefully with, discharging will cause secondary pollution to environment arbitrarily, sludge reduction, harmlessness disposing is extremely urgent.The main disposal technology of mud has the soil utilization, and landfill burns etc., requires the moisture content of mud will be below 60%.And the moisture percentage in sewage sludge behind the mechanical dehydration still has 80%, further handles and the disposal requirement in order to satisfy, and often will carry out drying and other treatment to mud.The mud heat drying is handled and through high temperature mud is carried out effective sterilization. but contain odor pollutant in the tail gas after the mummification.If these odorant pollutants are treated being discharged in the atmosphere not. and will exert an influence and endanger human body and human lives.When adopting mud heat drying technology, it is a necessary procedure that tail gas after the mummification is further handled.
According to the chemical composition of mud generation odorous substance, can it be divided into 4 types: the 1st type is sulfur-containing compound, like hydrogen sulfide, mercaptan, thioether and thiophene etc.; The 2nd type is nitrogen-containing compound, like ammonia, amine, acid amides and indoles etc.; The 3rd type is hydrocarbon compound, like alkane, alkene, alkynes and aromatic hydrocarbon etc.; The 4th type is oxygen-bearing organic matter, like alcohol, aldehyde, ketone, phenol and organic acid etc.Municipal sludge drying process odor pollution substrate concentration and odor strength detection are shown that the main component in the foul smell is hydrogen sulfide, ammonia and methyl mercaptan etc.According to the discharging characteristics of odorant pollutant in the municipal sludge drying process and concrete drying process, designed the tail gas clean-up treatment system in the mud drying process, the discharging of control odorant pollutant.
Summary of the invention
The utility model purpose is to provide odorant pollutant control system in a kind of municipal sludge drying process, the discharging of odorant pollutant in the control drying tail gas.
The technical scheme that the utility model adopts is:
Odorant pollutant control system in a kind of municipal sludge drying process; It is characterized in that: the mud of wet mud storage silo gets into the oar blade type desiccation machine through the mud batcher; The steam that waste heat boiler produces links to each other with the oar blade type desiccation machine through main steam line; Wherein condensate is sent into waste heat boiler through the steam condensate (SC) pipeline by feed pump, and dried mud gets into the dewatered sludge storage warehouse, and the drying tail gas that drying sludge produces links to each other with condenser through the drying tail gas pipeline; Cooling water gets into condenser through cooling water inlet pipe drying tail gas is cooled off; Discharged by cooling water outlet pipe, condenser is furnished with the waste collection pond, and condenser links to each other with chemical scrubber through exhaust pipe after the condensation; Chemical scrubber links to each other with the charcoal absorption case through washing back exhaust pipe, and the tail gas after purifying enters chimney through adsorbing back exhaust pipe and volume control damper by air-introduced machine.
Cleaning solution in the cleaning solution configuration case is introduced from chemical scrubber 5 tops through the charging control valve.
Temperature and pH controller are connected with thermocouple in being contained in chemical scrubber through the data acquisition line.
Cleaning solution in the cleaning solution configuration case is connected with thermocouple in being contained in chemical scrubber through the data acquisition line from the introducing of chemical washing top of tower and temperature and pH controller through the charging control valve.
The beneficial effect that the utlity model has is:
1, compact conformation, simple to operate, treatment effeciency is high;
2, adopt contactless heat exchange, cooling water can recycle, and system's water requirement is little, and active carbon can recycling utilization, and system operation cost is low;
3, the mud exhaust emissions characteristics to different can dispose suitable chemical washing liquid, have reached best assimilation effect, and the self-checking device system that makes can both reach best removal efficient under various mummification conditions;
4, blower fan is contained in afterbody, and whole system is moved in negative pressure state, has avoided foul smell to leak outside.Adopt online flue gas analyzer measurement result to show in the pilot plant test, after handling through native system, the odor pollution substrate concentration in the mud tail gas is far below national specified discharge standard, and whole mummification scene does not have the generation of stench fully.
Description of drawings
Accompanying drawing is a municipal sludge drying process odorant pollutant control system schematic.
Among the figure: 1, wet mud storage silo, 2, the mud batcher, 3, the oar blade type desiccation machine, 4, condenser, 5, chemical scrubber; 6, charcoal absorption case, 7, air-introduced machine, 8, chimney, 9, waste heat boiler, 10, main steam line; 11, steam condensate (SC) pipeline, 12, the dewatered sludge storage warehouse, 13, the drying tail gas pipeline, 14, exhaust pipe after the condensation, 15, washing back exhaust pipe; 16, absorption back exhaust pipe, 17, the waste collection pond, 18, temperature and pH controller, 19, the data acquisition line, 20, cooling water inlet pipe; 21, cooling water outlet pipe, 22, cleaning solution configuration case, 23, the charging control valve, 24, volume control damper, 25, feed pump.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Odorant pollutant treatment system in the municipal sludge heat drying process has three stage treatment unit, comprises condensation, chemical washing and activated carbon treatment device.Under the effect of air-introduced machine, the gas that sludge drying produces is introduced into condenser through the drying tail gas pipeline.Water vapor condensation in the gas gets off to get into the waste collection pond, and the dusty gas that is partially soluble in water simultaneously also can condense with steam and get into the liquid phase removal.Gas gets into chemical scrubber through after the condenser, and the cleaning solution of configuration voluntarily is housed in the scrubbing tower, can absorb most odorant pollutants in the tail gas.Scrubbing tower is furnished with temperature, and the pH self-checking device guarantees that chemical washing moves in optimal conditions.Gas entering charcoal absorption case through washing carries out final purification, further reduces the concentration of odorant pollutant.Last gas gets into chimney through air-introduced machine and discharges.
Shown in accompanying drawing; The mud of the wet mud storage silo 1 of the utility model gets into oar blade type desiccation machine 3 through mud batcher 2; The steam that waste heat boiler 9 produces links to each other with oar blade type desiccation machine 3 through main steam line 10; Wherein condensate is sent into waste heat boiler 9 through steam condensate (SC) pipeline 11 by feed pump 25, and dried mud gets into dewatered sludge storage warehouse 12, and the drying tail gas that drying sludge produces links to each other with condenser 4 through drying tail gas pipeline 13; Cooling water gets into 4 pairs of drying tail gas of condenser through cooling water inlet pipe 20 and cools off; Discharged by cooling water outlet pipe 21, condenser 4 is furnished with waste collection pond 17, and condenser 4 links to each other with chemical scrubber 5 through exhaust pipe 14 after the condensation; Chemical scrubber 5 links to each other with charcoal absorption case 6 through washing back exhaust pipe 15, and the tail gas after purifying enters chimney 8 with volume control damper 24 by air-introduced machine 7 through adsorbing back exhaust pipe 16.
Cleaning solution in the cleaning solution configuration case 22 is introduced from chemical scrubber 5 tops through charging control valve 23.
Temperature and pH controller 18 are connected with thermocouples in being contained in chemical scrubber 5 through data acquisition line 19.
Cleaning solution in the cleaning solution configuration case 22 through charging control valve 23 from chemical scrubber 5 top introducings and temperature and pH controller 18 through data acquisition line 19 be contained in chemical scrubber 5 interior thermocouples and be connected.
The operation principle of the utility model is following:
The mud of wet mud storage silo 1 gets into oar blade type desiccation machine 3 through mud batcher 2, and mummification institute calorific requirement is provided by the steam that waste heat boiler 9 produces.Under the effect of air-introduced machine 7, the gas that sludge drying produces is introduced into condenser 4 through drying tail gas pipeline 13.Water vapor condensation in the gas gets off to get into waste collection pond 17, and the dusty gas that is partially soluble in water simultaneously also can condense with steam and get into the liquid phase removal.Gas is equipped with the cleaning solution of development voluntarily through getting into chemical scrubber 5 by exhaust pipe after the condensation 14 after the condenser 4 in the cleaning solution configuration case 22, gets into chemical scrubber 5 through charging control valve 23, can absorb most odorant pollutants in the tail gas.Chemical scrubber 5 is furnished with temperature and pH auto-controller 18, guarantees that chemical washing moves in optimal conditions.Gas entering charcoal absorption case 6 through washing carries out final purification, further reduces the concentration of odorant pollutant.Last gas gets into chimney 8 through air-introduced machine 7 and discharges.
Claims (4)
1. odorant pollutant control system in the municipal sludge drying process; It is characterized in that: the mud of wet mud storage silo (1) gets into oar blade type desiccation machine (3) through mud batcher (2); The steam that waste heat boiler (9) produces links to each other with oar blade type desiccation machine (3) through main steam line (10); Wherein condensate is sent into waste heat boiler (9) through steam condensate (SC) pipeline (11) by feed pump (25); Dried mud gets into dewatered sludge storage warehouse (12); The drying tail gas that drying sludge produces links to each other with condenser (4) through drying tail gas pipeline (13), and cooling water gets into condenser (4) through cooling water inlet pipe (20) drying tail gas is cooled off, and is discharged by cooling water outlet pipe (21); Condenser (4) is furnished with waste collection pond (17); Condenser (4) links to each other with chemical scrubber (5) through exhaust pipe (14) after the condensation, and chemical scrubber (5) links to each other with charcoal absorption case (6) through washing back exhaust pipe (15), and the tail gas after purifying enters chimney (8) through absorption back exhaust pipe (16) and volume control damper (24) by air-introduced machine (7).
2. odorant pollutant control system in a kind of municipal sludge drying process according to claim 1, it is characterized in that: the cleaning solution in the cleaning solution configuration case (22) is introduced from chemical scrubber (5) top through charging control valve (23).
3. odorant pollutant control system in a kind of municipal sludge drying process according to claim 1 is characterized in that: temperature is connected through data acquisition line (19) thermocouple interior with being contained in chemical scrubber (5) with pH controller (18).
4. odorant pollutant control system in a kind of municipal sludge drying process according to claim 1 is characterized in that: the cleaning solution in the cleaning solution configuration case (22) is connected through data acquisition line (19) thermocouple interior with being contained in chemical scrubber (5) with pH controller (18) with temperature from chemical scrubber (5) top introducing through charging control valve (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203124597U CN202237750U (en) | 2011-08-25 | 2011-08-25 | Odor pollutant control system in city sludge drying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203124597U CN202237750U (en) | 2011-08-25 | 2011-08-25 | Odor pollutant control system in city sludge drying process |
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| Publication Number | Publication Date |
|---|---|
| CN202237750U true CN202237750U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203124597U Expired - Lifetime CN202237750U (en) | 2011-08-25 | 2011-08-25 | Odor pollutant control system in city sludge drying process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836566A (en) * | 2012-09-14 | 2012-12-26 | 北京机电院高技术股份有限公司 | Water-saving sludge paddle type drying carrier gas complete set of treating device and method |
| CN106621791A (en) * | 2016-12-29 | 2017-05-10 | 湖南军信污泥处置有限公司 | Method and device for treating high-concentration foul gas produced by sludge thermal-hydrolysis |
| CN109422440A (en) * | 2017-08-23 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of innoxious drying device and method of sulfur-bearing sludge |
| CN109734282A (en) * | 2019-02-22 | 2019-05-10 | 广州市思高特环保设备有限公司 | Sludge dehumidifying desiccation machine and sludge dehumidifying anhydration system |
| CN114471068A (en) * | 2021-12-09 | 2022-05-13 | 武汉钢铁有限公司 | Comprehensive treatment method for sludge odor |
| CN114477688A (en) * | 2022-04-14 | 2022-05-13 | 生态环境部华南环境科学研究所 | Ozone generating device for biochemical sludge treatment |
-
2011
- 2011-08-25 CN CN2011203124597U patent/CN202237750U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836566A (en) * | 2012-09-14 | 2012-12-26 | 北京机电院高技术股份有限公司 | Water-saving sludge paddle type drying carrier gas complete set of treating device and method |
| CN106621791A (en) * | 2016-12-29 | 2017-05-10 | 湖南军信污泥处置有限公司 | Method and device for treating high-concentration foul gas produced by sludge thermal-hydrolysis |
| CN109422440A (en) * | 2017-08-23 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of innoxious drying device and method of sulfur-bearing sludge |
| CN109734282A (en) * | 2019-02-22 | 2019-05-10 | 广州市思高特环保设备有限公司 | Sludge dehumidifying desiccation machine and sludge dehumidifying anhydration system |
| CN114471068A (en) * | 2021-12-09 | 2022-05-13 | 武汉钢铁有限公司 | Comprehensive treatment method for sludge odor |
| CN114477688A (en) * | 2022-04-14 | 2022-05-13 | 生态环境部华南环境科学研究所 | Ozone generating device for biochemical sludge treatment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
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| CX01 | Expiry of patent term |