CN217780985U - Sewage plant sludge pyrohydrolysis system - Google Patents
Sewage plant sludge pyrohydrolysis system Download PDFInfo
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- CN217780985U CN217780985U CN202221145761.2U CN202221145761U CN217780985U CN 217780985 U CN217780985 U CN 217780985U CN 202221145761 U CN202221145761 U CN 202221145761U CN 217780985 U CN217780985 U CN 217780985U
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Abstract
The invention provides a sewage plant sludge pyrohydrolysis system, which can greatly reduce the addition of chemical reagents and even realize zero addition, prevent the corrosion of pyrohydrolysis related equipment, pipelines and the like, reduce the equipment cost, prevent concentration equipment from generating deposition and scaling, improve the concentration efficiency, prevent the pH value of a resource product from being too low or too high, and improve the quality of the resource product, and comprises a sludge opening tank, and is characterized in that: the mud opening pool is connected with an electric wall breaking device through a metal pipeline, the electric wall breaking device is connected with a hydrolysis reaction tank through a metal pipeline, the hydrolysis reaction tank is connected with a flash tank through a metal pipeline, the discharge end of the flash tank is connected with a solid-liquid separation device through a metal pipeline, the liquid discharge end of the solid-liquid separation device is connected with a concentration device through a metal pipeline, and the solid discharge end of the solid-liquid separation device is connected with a mud cake bin through a metal pipeline; the electric wall breaking device is used for breaking the wall of sludge extracellular polymers by using an electromagnetic field.
Description
Technical Field
The invention relates to the technical field related to organic solid waste treatment, in particular to a sludge pyrohydrolysis system of a sewage plant.
Background
Organic solid wastes are resources which are misplaced, and if the organic solid wastes can be reasonably utilized, the wastes can be changed into valuables. Sludge, as a common organic solid waste, also has resource attributes. The reduction, stabilization and harmlessness of the sludge are finally realized by resource utilization. Aerobic composting, anaerobic gas production, drying incineration, carbonization, pyrohydrolysis and the like are common sludge resource utilization modes.
In the traditional sludge pyrohydrolysis process, in order to destroy extracellular polymeric substances in sludge, a large amount of various chemical reagents such as acid, alkali, oxidant and the like are often required to be added, so that the corrosion of equipment, pipelines and the like related to pyrohydrolysis is caused, the corrosion prevention requirement is higher, and the equipment cost is increased; meanwhile, strong alkali is added to the sludge for pyrohydrolysis in the hydrolysate concentration link, so that the concentration equipment is also subjected to deposition and scaling, and the concentration efficiency is reduced; and due to the addition of strong acid and strong base, the pH value of the subsequent resource product is too low or too high, and the quality of the resource product is reduced.
Disclosure of Invention
In order to solve the problems mentioned in the above, the invention provides a sewage plant sludge pyrohydrolysis system, which can greatly reduce the addition amount of chemical reagents and even realize zero addition, prevent the corrosion of pyrohydrolysis related equipment, pipelines and the like, reduce the equipment cost, prevent the deposition and scaling of concentration equipment, improve the concentration efficiency, prevent the pH value of a resource product from being too low or too high, and improve the quality of the resource product.
The technical scheme is as follows:
the utility model provides a sewage plant mud pyrohydrolysis system, its characterized in that including opening the mud pond: the mud opening pool is connected with an electric wall breaking device through a metal pipeline, the electric wall breaking device is connected with a hydrolysis reaction tank through a metal pipeline, the hydrolysis reaction tank is connected with a flash tank through a metal pipeline, the discharge end of the flash tank is connected with a solid-liquid separation device through a metal pipeline, the liquid discharge end of the solid-liquid separation device is connected with a concentration device through a metal pipeline, and the solid discharge end of the solid-liquid separation device is connected with a mud cake bin through a metal pipeline; the electric wall breaking device is used for breaking the wall of sludge extracellular polymers by using an electromagnetic field.
Further, the sludge opening tank is used for receiving and mixing external dewatered sludge and concentrated sludge of a sewage plant.
Furthermore, a sludge conveying pipeline penetrates through the electric wall breaking device, the sludge conveying pipeline is communicated with a metal pipeline, and electromagnetic generators are distributed on the periphery of the sludge conveying pipeline.
Furthermore, the heat source of the hydrolysis reaction tank is electricity or steam, and a stirring assembly is arranged in the hydrolysis reaction tank.
Further, the flash tank is connected with the hydrolysis reaction tank through a steam pipeline and used for refluxing waste heat steam in the flash tank to the hydrolysis reaction tank, and a one-way valve is installed on the steam pipeline.
Furthermore, a thermometer, a pressure gauge and a liquid level meter are respectively arranged on the hydrolysis reaction tank and the flash tank.
Further, the solid-liquid separation device is a plate-and-frame filter press or a centrifuge.
Further, the concentration device is a multiple effect evaporation device or an MVR evaporation device or a membrane filtration in combination with the multiple effect evaporation device or the membrane filtration in combination with the MVR evaporation device.
Furthermore, a pump, a valve, a data collector and an inductor are arranged on the metal pipeline, and the pump, the valve, the data collector and the inductor are connected with a central control console of the system.
The beneficial effects of the invention are as follows:
according to the invention, the electric wall breaking device is arranged between the sludge opening tank and the hydrolysis reaction tank of the system, and the electric wall breaking device is used for breaking the wall of sludge extracellular polymers by using an electromagnetic field, so that long-chain macromolecular substances of the extracellular polymers are converted into short-chain micromolecules, the sludge wall breaking effect is obvious, the sludge retention time is short, the addition amount of chemical reagents in the hydrolysis reaction process can be greatly reduced, even zero addition can be realized, the corrosion of equipment, pipelines and the like related to pyrohydrolysis is prevented, the equipment cost is reduced, the deposition and scaling of concentration equipment are prevented, the concentration efficiency is improved, the pH value of a resource product is prevented from being too low or too high, and the technical effect of improving the quality of the resource product is achieved.
Drawings
Fig. 1 is a schematic diagram of the system architecture of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.
As shown in figure 1, a sewage plant mud pyrohydrolysis system, it is including opening mud pit 1, it connects electric wall-breaking device 2 through metal pipeline to open mud pit 1, electric wall-breaking device 2 passes through metal pipeline and connects hydrolysis reaction tank 3, hydrolysis reaction tank 3 passes through metal pipeline and connects flash tank 4, the discharge end of flash tank 4 passes through metal pipeline and connects solid-liquid separation equipment 5, the liquid discharge end of solid-liquid separation equipment 5 passes through metal pipeline and connects enrichment facility 6, and its solid discharge end passes through metal pipeline and connects mud cake storehouse 7.
The sludge opening tank 1 is used for receiving and mixing external dewatered sludge and concentrated sludge of a sewage plant.
The electric wall breaking device 2 is used for breaking the wall of sludge extracellular polymeric substances by using an electromagnetic field and converting long-chain macromolecular substances of the extracellular polymeric substances into short-chain micromolecules. Run through in the broken wall device 2 of electricity has mud pipeline, mud pipeline is linked together with metal pipeline, the mud pipeline periphery distributes and is provided with electromagnetic generator, and the electromagnetic field that electromagnetic generator produced carries out the broken wall to mud.
The heat source of the hydrolysis reaction tank 3 is electricity or steam, and a stirring component is arranged in the hydrolysis reaction tank 3. The flash tank 4 is connected with the hydrolysis reaction tank 3 through a steam pipeline and used for refluxing waste heat steam in the flash tank 4 to the hydrolysis reaction tank 3, and a one-way valve is installed on the steam pipeline. And a thermometer, a pressure gauge and a liquid level meter are respectively arranged on the hydrolysis reaction tank 3 and the flash tank 4.
The solid-liquid separation device 5 is a plate-and-frame filter press or a centrifugal machine. The concentration device 6 is a multiple effect evaporation device or MVR evaporation device or membrane filtration in combination with a multiple effect evaporation device or membrane filtration in combination with a MVR evaporation device.
The metal pipeline is provided with a pump, a valve, a data collector and an inductor, and the pump, the valve, the data collector and the inductor are connected with a central control console of the system.
The working principle of the system is as follows: when external sludge enters the sludge opening tank 1, the external sludge is mixed with the concentrated sludge of the sludge treatment plant until the external sludge has better fluidity; extracellular polymers in the sludge are decomposed into small molecular substances by pumping along the sludge conveying pipeline through the electric wall breaking device 2 under the action of electromagnetic waves generated by an electromagnetic generator; in the hydrolysis reaction tank 3, the sludge is further subjected to high-temperature and high-pressure thermal hydrolysis, and extracellular polymers are more fully decomposed; after flash evaporation, temperature reduction and pressure reduction, the filter liquor passes through a solid-liquid separation device 5, the filter liquor is concentrated into a liquid organic matrix, and the dehydrated mud cake can be further recycled. Above-mentioned in-process, electricity broken wall device 2 utilizes the electromagnetic field to carry out the broken wall to the extracellular polymer of mud, turn into the long-chain macromolecular substance of extracellular polymer short chain micromolecule, mud broken wall effect is showing, mud dwell time is short, and then can reduce hydrolysis reaction in-process chemical reagent's the addition by a wide margin and accomplish zero interpolation even, hot hydrolysis relevant equipment has been prevented, the corruption of pipeline etc., equipment cost is reduced, the deposit scale deposit has been prevented from appearing in concentrator, concentration efficiency is improved, the pH value that has prevented resource product is crossed low or too high, the quality of resource product has been improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a sewage plant mud pyrohydrolysis system, its characterized in that including opening the mud pond: the mud opening tank is connected with an electric wall breaking device through a metal pipeline, the electric wall breaking device is connected with a hydrolysis reaction tank through a metal pipeline, the hydrolysis reaction tank is connected with a flash tank through a metal pipeline, the discharge end of the flash tank is connected with a solid-liquid separation device through a metal pipeline, the liquid discharge end of the solid-liquid separation device is connected with a concentration device through a metal pipeline, and the solid discharge end of the solid-liquid separation device is connected with a mud cake bin through a metal pipeline; the electric wall breaking device is used for breaking the wall of sludge extracellular polymers by using an electromagnetic field.
2. The sewage plant sludge pyrohydrolysis system of claim 1, wherein: the sludge opening tank is used for receiving and mixing external dewatered sludge and concentrated sludge of a sewage plant.
3. The sewage plant sludge pyrohydrolysis system of claim 1, wherein: and a sludge conveying pipeline penetrates through the electric wall breaking device, the sludge conveying pipeline is communicated with the metal pipeline, and electromagnetic generators are distributed on the periphery of the sludge conveying pipeline.
4. The sewage plant sludge pyrohydrolysis system of claim 1, wherein: the heat source of the hydrolysis reaction tank is electricity or steam.
5. The sewage plant sludge pyrohydrolysis system of claim 1, wherein: and a stirring component is arranged in the hydrolysis reaction tank.
6. The sewage plant sludge pyrohydrolysis system of claim 1, wherein: the flash tank is connected with the hydrolysis reaction tank through a steam pipeline and used for refluxing waste heat steam in the flash tank to the hydrolysis reaction tank, and a one-way valve is installed on the steam pipeline.
7. The sewage plant sludge pyrohydrolysis system of claim 1, wherein: and the hydrolysis reaction tank and the flash tank are respectively provided with a thermometer, a pressure gauge and a liquid level meter.
8. The sewage plant sludge pyrohydrolysis system of claim 1, wherein: the solid-liquid separation device is a plate-and-frame filter press or a centrifugal machine.
9. The sewage plant sludge pyrohydrolysis system of claim 1, wherein: the concentration device is a multi-effect evaporation device or a MVR evaporation device or a membrane filtration in combination with a multi-effect evaporation device or a membrane filtration in combination with a MVR evaporation device.
10. The sewage plant sludge pyrohydrolysis system of claim 1, wherein: and the metal pipeline is provided with a pump, a valve, a data collector and an inductor, and the pump, the valve, the data collector and the inductor are connected with a central console of the system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202221145761.2U CN217780985U (en) | 2022-05-13 | 2022-05-13 | Sewage plant sludge pyrohydrolysis system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221145761.2U CN217780985U (en) | 2022-05-13 | 2022-05-13 | Sewage plant sludge pyrohydrolysis system |
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| CN217780985U true CN217780985U (en) | 2022-11-11 |
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| CN202221145761.2U Active CN217780985U (en) | 2022-05-13 | 2022-05-13 | Sewage plant sludge pyrohydrolysis system |
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