CN215757084U - Municipal sludge resourceful treatment system - Google Patents
Municipal sludge resourceful treatment system Download PDFInfo
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- CN215757084U CN215757084U CN202120824946.5U CN202120824946U CN215757084U CN 215757084 U CN215757084 U CN 215757084U CN 202120824946 U CN202120824946 U CN 202120824946U CN 215757084 U CN215757084 U CN 215757084U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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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
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Treatment Of Sludge (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The utility model provides a municipal sludge recycling treatment system, which can realize high-efficiency recycling of municipal sludge and effectively solve the technical problem of long time consumption in sludge treatment. The utility model provides a municipal sludge resourceful treatment system which characterized in that: the system comprises a sludge pyrohydrolysis unit, a filtrate treatment unit and a filter cake drying and incinerating unit; the sludge thermal hydrolysis unit comprises a preheating tank, a hydrolysis reaction tank, a flash tank and a solid-liquid separation device which are connected in sequence, wherein the preheating tank is connected with a medicament bin and a sludge bin; the filtrate treatment unit comprises a filtrate storage device, an evaporation concentration device and a blending device which are connected in sequence, and the evaporation concentration device is connected with a filtrate outlet of the solid-liquid separation device; the filter cake drying and incinerating unit comprises a crusher, a sludge disc drying machine, a sludge drying bin and a sludge incinerator which are sequentially connected, the crusher is connected with a filter cake outlet of the solid-liquid separation device, and a slag outlet of the sludge incinerator is connected with the slag removing unit.
Description
Technical Field
The utility model relates to the field of sludge treatment and disposal, in particular to a municipal sludge recycling treatment system with synergy of pyrohydrolysis and drying incineration.
Background
By the end of 2018, 4332 seats of a sewage treatment plant are built in cities and towns in China, the sewage treatment capacity is 1.95 billion cubic meters per day, the sludge yield reaches 6765 ten thousand tons (80% of water content), and the annual output of the sludge (80% of water content) of the sewage treatment plant in the cities and towns in China is estimated to break 8000 ten thousand tons in 2020 plus 2025 years. Municipal sludge is used as a relatively large component of sludge and has higher resource utilization value than industrial sludge. For a long time, domestic awareness of municipal sludge resource attributes is lacking.
The sludge is buried in many places in China or is used as a main mode for sludge treatment, so that a large amount of land is wasted, and serious secondary pollution is easily caused; although the municipal sludge can be recycled by aerobic composting and anaerobic fermentation, the time consumption is long, the occupied area of the aerobic fermentation is large, and the biogas residues after the anaerobic fermentation need to be further treated. The treatment methods can not realize the high-efficiency resource utilization of the sludge in a short time.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides a municipal sludge recycling treatment system which can realize the high-efficiency recycling utilization of municipal sludge and effectively solve the technical problem of long time consumption in sludge treatment.
Its technical scheme is like, a municipal sludge resourceful treatment system which characterized in that: the system comprises a sludge pyrohydrolysis unit, a filtrate treatment unit and a filter cake drying and incinerating unit;
the sludge thermal hydrolysis unit comprises a preheating tank, a hydrolysis reaction tank, a flash tank and a solid-liquid separation device which are sequentially connected, wherein the preheating tank is connected with a medicament bin and a sludge bin;
the filtrate treatment unit comprises a filtrate storage device, an evaporation concentration device and a blending device which are connected in sequence, and the evaporation concentration device is connected with a filtrate outlet of the solid-liquid separation device;
the filter cake mummification burns the unit including the breaker, sludge disc mummification machine, sludge drying feed bin and the sludge incinerator that connect gradually, the breaker is connected solid-liquid separation equipment's filter cake export, the flue gas outlet connection flue gas purification unit of sludge incinerator, the slagging-off unit is connected to the slag notch of sludge incinerator, the gas outlet connection mummification exhaust-gas treatment unit of sludge disc mummification machine, mummification exhaust-gas treatment unit connects sludge incinerator, the filter cake mummification burns the unit and still includes heat recovery utilizes the device, heat recovery utilizes the device to connect respectively sludge incinerator the preheater with sludge disc mummification machine, heat recovery utilizes the device to absorb the heating that is used for preheating tank and sludge disc mummification machine behind the heat of sludge incinerator.
Further, the solid-liquid separation device is a plate-and-frame filter press.
Further, the sludge incinerator is a circulating fluidized bed boiler, and the heat energy recycling device is a waste heat boiler.
Further, the flue gas purification unit includes quench tower, deacidification tower, sack cleaner, active carbon that connect gradually and throws feeder apparatus and chimney, sludge incinerator's flue gas outlet connection quench tower.
Furthermore, the drying waste gas treatment unit comprises an acid-base washing tower and a biological filter which are connected in sequence, a gas outlet of the sludge disc drying machine is connected with the acid-base washing tower, and a gas outlet of the biological filter is connected with the sludge incinerator.
Furthermore, the slag removal unit comprises a slag cooler and a slag bin which are connected in sequence.
The utility model has the beneficial effects that: municipal sludge is subjected to thermal hydrolysis treatment and drying incineration treatment, part of organic matters in the sludge is converted into protein liquid fertilizer with high added value, aerobic composting and anaerobic fermentation operations are abandoned, the protein liquid fertilizer is directly utilized, the whole time consumption of sludge treatment is short, the rest part of the organic matters is used as fuel for self-sustaining incineration, energy released after combustion is used for sludge preheating and drying, and the dependence on secondary energy is effectively reduced; after inorganic matters in the sludge are subjected to incineration treatment, most of the inorganic matters are discharged from the bottom of the boiler in the form of bottom slag, and the inorganic matters can be used as building materials for resource utilization; the utility model achieves the maximization of the sludge resource utilization efficiency, and the reduction of the filter cake is obvious after the drying incineration treatment; in conclusion, the utility model has the advantages of high resource utilization rate, energy conservation and obvious reduction.
Drawings
FIG. 1 is a block diagram of the system of the present invention.
Detailed Description
A municipal sludge recycling treatment system is shown in figure 1 and comprises a sludge pyrohydrolysis unit, a filtrate treatment unit and a filter cake drying and incinerating unit;
the sludge thermal hydrolysis unit comprises a preheating tank 3, a hydrolysis reaction tank 4, a flash tank 5 and a solid-liquid separation device 6 which are connected in sequence, wherein the preheating tank is connected with a medicament bin 1 and a sludge bin 2, and the solid-liquid separation device 6 is a plate-and-frame filter press;
the filtrate treatment unit comprises a filtrate storage device 7, an evaporation concentration device 8 and a blending device 9 which are connected in sequence, wherein the evaporation concentration device 8 is connected with a filtrate outlet of the solid-liquid separation device 6;
the filter cake drying and incinerating unit comprises a crusher 10 and a sludge disc drying machine 11 which are connected in sequence, the sludge drying bin 12 and the sludge incinerator 13, the filter cake outlet of the solid-liquid separation device 6 is connected to the crusher 10, the heat energy recycling device 18 is connected with the preheating tank 3 and the sludge disc drier 11, the smoke outlet of the sludge incinerator 13 is connected with the smoke purification unit, the slag outlet of the sludge incinerator 13 is connected with the slag removal unit, the gas outlet of the sludge disc drier 11 is connected with the drying waste gas treatment unit, the drying waste gas treatment unit is connected with the sludge incinerator 13, the filter cake drying incineration unit further comprises the heat energy recycling device 18, the heat energy recycling device 18 specifically adopts a waste heat boiler, the waste heat boiler is respectively connected with the sludge incinerator 13, the preheating tank 3 and the sludge disc drier 11, and the waste heat boiler absorbs heat of the sludge incinerator 13 and is used for heating the preheating tank 3 and the sludge disc drier 11.
The sludge incinerator 13 is a circulating fluidized bed boiler, a waste heat boiler 18 is installed on a flue of the sludge incinerator 13, a tank jacket is arranged on the outer side of a tank body of the preheating tank 3, and the sludge disc dryer 11 uses high-pressure steam as a heating medium. Steam generated by the waste heat boiler is respectively conveyed to the preheating tank 3 and the disc drier 11 through pipelines, and is respectively subjected to heat exchange with sludge on a tank jacket of the preheating tank 3 and a disc of the disc drier 11, so that the temperature of the sludge in the preheating tank 3 is raised to a preset value, and the moisture content of wet sludge in the disc drier 11 is reduced.
The flue gas purification unit comprises a quench tower 19, a deacidification tower 20, a bag-type dust remover 21, an active carbon feeding device 22 and a chimney 23 which are connected in sequence, and a flue gas outlet (namely a flue outlet) of the sludge incinerator 13 is connected with the quench tower 19.
The drying waste gas treatment unit comprises an acid-base washing tower 16 and a biological filter 17 which are connected in sequence, a gas outlet of the sludge disc drying machine 11 is connected with the acid-base washing tower 16, a gas outlet of the biological filter 17 is connected with the sludge incinerator 13, and the treated non-condensable gas enters the incinerator for incineration.
The slag removal unit comprises a slag cooler 14 and a slag bin 15 which are connected in sequence, and the slag cooler 14 is connected with the slag bin 15 through a slag conveyor.
The chemical agent bin 1 and the preheating tank 3 of the sludge pyrohydrolysis unit are used for conveying chemical agents through a chemical adding pump and a pipeline, and other devices are used for conveying sludge through a sludge conveying pump and a pipeline; filtrate is conveyed among all devices of the filtrate treatment unit through a liquid pump and a pipeline, a filtrate storage device 7 of the filtrate treatment unit and a solid-liquid separation device 6 of the sludge pyrohydrolysis unit can be arranged at high and low positions of the devices, and the filtrate flows into the filtrate storage device 7 automatically; dehydrated filter cakes and dried sludge are conveyed among a crusher 10, a sludge disc drier 11 and a sludge drying bin 12 of a filter cake drying and incinerating unit and between the crusher 10 of the filter cake drying and incinerating unit and a solid-liquid separation device 6 of a sludge pyrohydrolysis unit through belt conveyors, the dried sludge is conveyed between the sludge drying bin 12 and a sludge incinerator 13 through a screw conveyor, and bottom slag is conveyed among a sludge incineration rate 13, a slag cooler 14 and a slag bin 15 through a steel belt conveyor.
Claims (6)
1. The utility model provides a municipal sludge resourceful treatment system which characterized in that: the system comprises a sludge pyrohydrolysis unit, a filtrate treatment unit and a filter cake drying and incinerating unit;
the sludge thermal hydrolysis unit comprises a preheating tank, a hydrolysis reaction tank, a flash tank and a solid-liquid separation device which are sequentially connected, wherein the preheating tank is connected with a medicament bin and a sludge bin;
the filtrate treatment unit comprises a filtrate storage device, an evaporation concentration device and a blending device which are connected in sequence, and the evaporation concentration device is connected with a filtrate outlet of the solid-liquid separation device;
the filter cake mummification burns the unit including the breaker, sludge disc mummification machine, sludge drying feed bin and the sludge incinerator that connect gradually, the breaker is connected solid-liquid separation equipment's filter cake export, the flue gas outlet connection flue gas purification unit of sludge incinerator, the slagging-off unit is connected to the slag notch of sludge incinerator, the gas outlet connection mummification exhaust-gas treatment unit of sludge disc mummification machine, mummification exhaust-gas treatment unit connects sludge incinerator, the filter cake mummification burns the unit and still includes heat recovery utilizes the device, heat recovery utilizes the device to connect respectively sludge incinerator the preheater with sludge disc mummification machine, heat recovery utilizes the device to absorb the heating that is used for preheating tank and sludge disc mummification machine behind the heat of sludge incinerator.
2. The municipal sludge recycling treatment system according to claim 1, wherein: the solid-liquid separation device is a plate-and-frame filter press.
3. The municipal sludge recycling treatment system according to claim 1, wherein: the sludge incinerator is a circulating fluidized bed boiler, and the heat energy recycling device is a waste heat boiler.
4. The municipal sludge recycling treatment system according to claim 1, wherein: the flue gas purification unit includes quench tower, deacidification tower, sack cleaner, active carbon that connect gradually and throws feeder apparatus and chimney, sludge incinerator's exhanst gas outlet is connected quench tower.
5. The municipal sludge recycling treatment system according to claim 1, wherein: the drying waste gas treatment unit comprises an acid-base washing tower and a biological filter which are sequentially connected, a gas outlet of the sludge disc drying machine is connected with the acid-base washing tower, and a gas outlet of the biological filter is connected with the sludge incinerator.
6. The municipal sludge recycling treatment system according to claim 1, wherein: the slag removal unit comprises a slag cooler and a slag bin which are connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120824946.5U CN215757084U (en) | 2021-04-21 | 2021-04-21 | Municipal sludge resourceful treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120824946.5U CN215757084U (en) | 2021-04-21 | 2021-04-21 | Municipal sludge resourceful treatment system |
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| Publication Number | Publication Date |
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| CN215757084U true CN215757084U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120824946.5U Active CN215757084U (en) | 2021-04-21 | 2021-04-21 | Municipal sludge resourceful treatment system |
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| Country | Link |
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| CN (1) | CN215757084U (en) |
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2021
- 2021-04-21 CN CN202120824946.5U patent/CN215757084U/en active Active
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