CN220703482U - Synergistic plant ash alkaline method domestic sludge treatment system - Google Patents
Synergistic plant ash alkaline method domestic sludge treatment system Download PDFInfo
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- CN220703482U CN220703482U CN202322372792.2U CN202322372792U CN220703482U CN 220703482 U CN220703482 U CN 220703482U CN 202322372792 U CN202322372792 U CN 202322372792U CN 220703482 U CN220703482 U CN 220703482U
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- 230000006641 stabilisation Effects 0.000 claims abstract description 20
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- 230000008569 process Effects 0.000 claims abstract description 15
- 238000004062 sedimentation Methods 0.000 claims description 50
- 239000003513 alkali Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 9
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Abstract
The utility model relates to the technical field of sludge treatment, in particular to a synergistic plant ash alkaline method domestic sludge treatment system. The system comprises a biological flocculation precipitation device and a high-temperature harmless and alkaline stabilizing integrated device which are sequentially connected, wherein a stirring device is arranged on the high Wen Mohai and alkaline stabilizing integrated device, an electric heating device is arranged on the side wall of the high Wen Mohai and alkaline stabilizing integrated device, a plant ash feed inlet is formed in the upper part of the high Wen Mohai and alkaline stabilizing integrated device, a spiral discharge device is arranged at the lower part of the high Wen Mohai and alkaline stabilizing integrated device, and the output end of the spiral discharge device is provided with a discharge hole. The plant ash is used as a stabilizer for the alkaline method of the sludge, and the high Wen Mohai treatment means is used for cooperating with the alkaline method stabilization treatment process of the plant ash to stabilize the domestic sludge, so that the effect of stabilizing the sludge by the alkaline method of the plant ash is improved, the production efficiency is improved, and the nutritional ingredients in the sludge are reserved to the greatest extent.
Description
Technical Field
The utility model relates to the technical field of sludge treatment, in particular to a synergistic plant ash alkaline method domestic sludge treatment system.
Background
With the rapid development of social economy and the continuous improvement of urban level, the discharge amount of domestic sewage is increased, and the sludge yield of sewage treatment plants is increased sharply. According to statistics, nearly 6600 ten thousand tons of sludge are currently produced annually in China. The water content in the sludge is very high, various bacteria, viruses and parasitic organisms are parasitic to high-content organic matters, meanwhile, heavy metal compounds such as zinc, copper, lead, cadmium and the like, toxic compounds, pesticides and the like are concentrated in the sludge, the use of the sludge is often higher than that of an organic fertilizer, the sludge which is not properly treated is limited, and the sludge is not allowed to be used for agriculture and cannot be used as a greening organic fertilizer. The complex variability of the sludge structure determines the difficulty in efficiently treating the sludge. The sludge treatment and disposal cost is high, so that the environmental benefit of sewage treatment facilities is greatly reduced, and a sustainable sludge treatment and comprehensive utilization system with low cost becomes a research focus.
The sludge treatment with various chemical agents is a common technology, and common chemical agents include quicklime, slaked lime, potassium permanganate, chlorine, etc., cement kiln dust, fly ash from burning wood, etc., are also beginning to be applied to the stabilization treatment process of sludge. The alkaline stabilizing treatment process has various alkaline agents, the selection of the process scheme depends on economic, market, environment, safety and other factors, the treatment effect needs to be ensured for a long time, the treatment cost is increased, and the treated product needs to be beneficial to the further resource utilization of the sludge. In recent years, in order to solve the problem of energy shortage, help rural development of green agriculture, and realize the goal of sustainable development, the biomass power generation industry is rapidly developing. Biomass which can be used for energy production in China reaches 6 hundred million tons each year, biomass ash which can be produced each year reaches 4000 tens of thousands of tons according to the yield of ash accounting for 6% of dry biomass, the discharge amount of plant ash is increased, the comprehensive utilization rate is low, the problem that a large amount of land area is occupied and environmental pollution is easily caused by random stacking is solved, and the great attention is paid to how to fully utilize the plant ash and realize high-value utilization. The plant ash is alkaline waste, is similar to fly ash after wood combustion, has the functions of dispersing harmful substances, improving sludge structure, inactivating pathogenic microorganisms and deodorizing, can be used as an alkaline stabilizer of sludge instead of lime, and is an alkaline stabilizer with great prospect, but the plant ash is used as the alkaline stabilizer of sludge in the prior art to be less researched.
Disclosure of Invention
The utility model aims to provide a system for treating domestic sludge by a synergistic plant ash alkaline method, which utilizes a high Wen Mohai chemical treatment means to stably treat the domestic sludge by the synergistic plant ash alkaline method.
In order to achieve the aim, the utility model discloses a synergistic plant ash alkaline domestic sludge treatment system which comprises a biological flocculation precipitation device and a high-temperature harmless and alkaline stabilizing integrated device which are sequentially connected, wherein a stirring device is arranged on the high Wen Mohai alkaline stabilizing integrated device, an electric heating device is arranged on the side wall of the high Wen Mohai alkaline stabilizing integrated device, a plant ash feed inlet is formed in the upper part of the high Wen Mohai alkaline stabilizing integrated device, a spiral discharge device is arranged at the lower part of the high Wen Mohai alkaline stabilizing integrated device, and a discharge port is formed in the output end of the spiral discharge device.
The method has the advantages that plant ash is used as a stabilizer for the alkaline method of the sludge, and a high Wen Mohai treatment means is used for cooperating with the alkaline method stabilization treatment process of the plant ash to improve the alkaline method stabilization effect of the plant ash on the sludge, so that the sludge is conditioned, the pH value of the sludge is increased, odor dissipation is reduced, the proportion of heavy metals in a stable state is increased, the mortality rate of escherichia coli and ascarid eggs is ensured, the alkaline method stabilization sludge treatment time is shortened, the process energy consumption and the operation cost are reduced, the production efficiency is improved, and the nutritional ingredients in the sludge are reserved to the greatest extent.
Preferably, the biological flocculation precipitation device comprises a primary sedimentation tank and a secondary sedimentation tank which are mutually communicated through a reducing pipeline, a biological microbial agent feeding port is formed in the upper part of the primary sedimentation tank, and a spraying device and a rotary microbial carrier are arranged in the primary sedimentation tank.
When the device is used, domestic sludge is subjected to primary sedimentation through the primary sedimentation tank, overflowed sewage is reduced in flow speed after passing through the reducing pipeline, enters the secondary sedimentation tank for secondary sedimentation, and the rotary microorganism carrier slowly rotates along the main shaft of the rotary microorganism carrier to provide a growth space for microorganisms.
Preferably, the rotating microbial carrier is a porous carrier.
The surface area of the structure is large, and more growth space is provided for microorganisms.
Preferably, the lower end of the primary sedimentation tank is connected with a primary sedimentation tank sedimentation bucket, and the angle between the side wall of the primary sedimentation tank sedimentation bucket and the horizontal plane is 25-35 degrees.
When in use, the sludge is discharged after biological flocculation.
Preferably, the lower part of the inner side of the secondary sedimentation tank is provided with a wave plate which is obliquely arranged, and the angle between the horizontal planes of the wave plates is 40 degrees to 50 degrees.
When in use, the wave patterns are uniformly distributed on the surface of the wave plate, which is beneficial to secondary sedimentation of sludge
Preferably, a preheating device is connected between the biological flocculation precipitation device and the high-temperature harmless and alkaline stabilization integrated device, a heat exchange tube is arranged in the preheating device, and a waste heat recovery device communicated with the heat exchange tube is arranged in the high Wen Mohai integrated device.
When the device is used, the waste heat recovery device transfers heat in the high Wen Mohai and alkaline process stabilization integrated device to the preheating device, so that the sludge in the preheating device is preheated, and the device is convenient to use.
Preferably, a screw conveyer is connected between the biological flocculation precipitation device and the preheating device, the screw conveyer comprises a casing, a screw shaft assembly driven by a driving device is arranged in the casing, and screw blades are arranged on the screw shaft assembly.
When the device is used, the sludge after biological flocculation is conveyed to the preheating device through the spiral blade, so that the device is convenient to use.
Preferably, the discharge port is connected with a rotary cooling device.
When the rotary cooling device is used, the heated material can be rapidly cooled, and the stability of microorganisms is ensured.
Preferably, the output end of the rotary cooling device is provided with a packaging device.
When the garden greening fertilizer is used, the packaging equipment is used for packaging materials and is used as a garden greening fertilizer.
Preferably, the high Wen Mohai integrated device for stabilizing the alkaline process is sequentially connected with a UV photooxidation purifier, a three-stage spray tower and an activated carbon adsorption box through an air outlet pipe.
When in use, the odor can reach the national emission standard after being treated.
In summary, the beneficial effects of the utility model are as follows: the method has the advantages that plant ash is used as a stabilizer for the alkaline method of the sludge, and a high Wen Mohai treatment means is used for cooperating with the alkaline method stabilization treatment process of the plant ash to improve the alkaline method stabilization effect of the plant ash on the sludge, so that the sludge is conditioned, the pH value of the sludge is increased, odor dissipation is reduced, the proportion of heavy metals in a stable state is increased, the mortality rate of escherichia coli and ascarid eggs is ensured, the alkaline method stabilization sludge treatment time is shortened, the process energy consumption and the operation cost are reduced, the production efficiency is improved, and the nutritional ingredients in the sludge are reserved to the greatest extent.
Drawings
FIG. 1 is a schematic diagram of a synergistic plant ash alkaline domestic sludge treatment system.
In the figure: 1. a biological flocculation precipitation device; 2. a spraying device; 3. reducing pipelines; 4. a biological agent adding port; 5. rotating the microorganism carrier; 6. a primary sedimentation tank; 7. a sedimentation bucket of the primary sedimentation tank; 8. a secondary sedimentation tank; 9. a wave plate; 10. a primary sedimentation tank stop valve; 11. a secondary sedimentation tank stop valve; 12. a screw conveyor; 13. conveying a feed inlet; 14. a housing; 15. a screw shaft assembly; 16. a helical blade; 17. a driving device; 18. conveying a discharge hole; 19. a preheating device; 20. a heat exchange tube; 21. high-temperature harmless and alkaline stabilizing integrated device; 22. a spiral discharging device; 23. a stirring device; 24. plant ash feed inlet; 25. a waste heat recovery device; 26. an electric heating device; 27. a discharge port; 28. an air outlet pipe; 29. a rotary cooling device; 30. packaging equipment; 31. a UV photo-oxygen purifier; 32. a third-stage spray tower; 33. an activated carbon adsorption tank; 34. an odor treatment device.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The utility model is further described with reference to the drawings and detailed description which follow:
as shown in fig. 1, the system for treating the domestic sludge by the synergistic plant ash alkali method comprises a biological flocculation precipitation device 1, a spiral conveying device 12, a preheating device 19 and a high Wen Mohai integrated device 21 for stabilizing the alkaline method, wherein the high Wen Mohai integrated device 21 for stabilizing the alkaline method is connected with an odor treatment device 34 and a solid treatment device.
Specifically, biological flocculation precipitation device 1 includes through reducing pipeline 3 intercommunicating primary sedimentation tank 6 and secondary sedimentation tank 8, and biological bacterial agent dosing port 4 has been seted up on primary sedimentation tank 6 upper portion, installs spray set 2 and rotatory microorganism carrier 5 in the primary sedimentation tank 6, and primary sedimentation tank stop valve 10 is installed to primary sedimentation tank 6 lower extreme, and secondary sedimentation tank stop valve 11 is installed to secondary sedimentation tank 8 lower extreme.
When the device is used, domestic sludge is subjected to primary sedimentation through the primary sedimentation tank 6, overflowed sewage is reduced in flow speed after passing through the reducing pipeline 3, enters the secondary sedimentation tank 8 for secondary sedimentation, and the rotary microorganism carrier 5 slowly rotates along the main shaft of the device to provide a growth space for microorganisms.
Preferably, the rotating microbial carrier 5 is a porous carrier.
The surface area of the structure is large, and more growth space is provided for microorganisms.
Preferably, the lower end of the primary sedimentation tank 6 is connected with a primary sedimentation tank sedimentation bucket 7, the angle between the side wall of the primary sedimentation tank sedimentation bucket 7 and the horizontal plane is 25 degrees to 35 degrees, and specifically, the angle between the side wall of the secondary sedimentation tank sedimentation bucket 7 and the horizontal plane can be 25 degrees, 30 degrees or 35 degrees
When in use, the sludge is discharged after biological flocculation.
Preferably, the lower part of the inner side of the secondary sedimentation tank 8 is provided with a wave plate 9 which is obliquely arranged, and the angle between the horizontal planes of the wave plate 9 is 40 degrees to 50 degrees, specifically, the angle between the horizontal planes of the wave plate 9 is 40 degrees, 45 degrees or 50 degrees.
When in use, the wave plate 9 has evenly distributed wave patterns on the surface, which is beneficial to secondary sedimentation of sludge.
Specifically, the screw conveying device 12 comprises a casing 14, a screw shaft assembly 15 driven by a driving device 17 is installed in the casing 14, a screw blade 16 is installed on the screw shaft assembly 15, the casing 14 is obliquely arranged, a conveying feed port 13 is formed in the upper side of the lower end of the casing 14, a conveying discharge port 18 is formed in the lower side of the upper end of the casing 14, and the conveying feed port 13 is connected with the output ends of the primary sedimentation tank 6 and the secondary sedimentation tank 8.
When in use, the sludge after biological flocculation is conveyed to the preheating device 19 through the spiral blade 16, so that the use is convenient.
Specifically, the preheating device 19 is internally provided with a heat exchange tube 20, and the high Wen Mohai alkali process stabilization integrated device 21 is internally provided with a waste heat recovery device 25 communicated with the heat exchange tube 20.
When the device is used, the waste heat recovery device 25 transfers heat in the high-temperature harmless and alkaline stabilization integrated device 21 to the preheating device 19, and the sludge in the preheating device 19 is preheated, so that the device is convenient to use.
Specifically, the stirring device 23 is installed on the high Wen Mohai and alkaline stabilizing integrated device 21, the electric heating device 26 is installed on the side wall of the high Wen Mohai and alkaline stabilizing integrated device 21, the plant ash feed inlet 24 is formed in the upper portion of the high Wen Mohai and alkaline stabilizing integrated device 21, the spiral discharge device 22 is installed on the lower portion of the high Wen Mohai and alkaline stabilizing integrated device 21, the discharge port 27 is arranged at the output end of the spiral discharge device 22, and specifically, the high Wen Mohai and alkaline stabilizing integrated device 21 is made of 304 stainless steel plates.
When in use, the high Wen Mohai integrated device 21 can generate a short-time high temperature.
Specifically, the discharge port 27 is connected to a rotary cooling device 29.
In use, the rotary cooling device 29 can cool the heated material rapidly, ensuring the stability of the microorganism.
The output of the rotary cooling device 29 is provided with a packaging device 30.
In use, the packaging device 30 is used for packaging materials and is used as an afforestation fertilizer.
The high-temperature harmless and alkaline stabilizing integrated device 21 is sequentially connected with a UV photo-oxygen purifier 31, a three-stage spray tower 32 and an activated carbon adsorption box 33 through an air outlet pipe 28.
When in use, the odor can reach the national emission standard after being treated.
The method has the advantages that plant ash is used as a stabilizer for the alkaline method of the sludge, and a high Wen Mohai treatment means is used for cooperating with the alkaline method stabilization treatment process of the plant ash to improve the alkaline method stabilization effect of the plant ash on the sludge, so that the sludge is conditioned, the pH value of the sludge is increased, odor dissipation is reduced, the proportion of heavy metals in a stable state is increased, the mortality rate of escherichia coli and ascarid eggs is ensured, the alkaline method stabilization sludge treatment time is shortened, the process energy consumption and the operation cost are reduced, the production efficiency is improved, and the nutritional ingredients in the sludge are reserved to the greatest extent. Meanwhile, the plant ash contains a large amount of potassium elements and trace elements, so that the content of nutrient elements in the treated product is increased, and the further agriculture of the sludge is facilitated. The utility model has the following positive effects:
the flocculation precipitation device adopts the rotary roller as a carrier of microorganisms, the microorganisms are fully contacted with sewage and sludge through the rotation of the roller, and the sewage flow rate is reduced by utilizing the sloping plate and the variable diameter design of the device, so that the flocculation effect of the sludge is improved.
The water content of the sludge is regulated by plant ash, the odor emission is reduced, the temperature of the high Wen Mohai treatment is regulated to 120-160 ℃, the temperature is maintained for 15-20 min, the water content of the final product is 40-50%, and the harmful substances meet the requirements of national standard GB4284-2018, thereby being beneficial to further being used as an afforestation fertilizer.
The utility model has compact structure, convenient maintenance, stable operation, small occupied area, space saving and cost reduction.
The method has the advantages that the problem of secondary pollution easily caused by chemical agents can be avoided by utilizing plant ash to treat domestic sludge, the cost consumption of the chemical agents is reduced, the plant ash is added into the sludge as weak alkaline substances to facilitate the dehydration of the sludge, the physicochemical properties of the sludge can be improved, the pH value of the sludge is adjusted, the humification process of organic substances in the sludge is promoted, the content of active heavy metals in the sludge is reduced, and the ecological environment risk of the sludge is reduced, so that the method is a promising sludge recycling method.
The plant ash contains abundant mineral elements, especially potassium elements, is environment-friendly and pollution-free compared with other sludge alkaline stabilizers, ensures enough alkalinity and kills pathogenic bacteria, and is an indistinct fertilizer.
The plant ash is slightly alkaline, the removal effect of pathogenic bacteria is limited by the content of the added plant ash, the sterilization effect is limited, the aim of thoroughly killing the eggs of the plant is fulfilled by utilizing the synergistic effect of high Wen Mohai treatment and the plant ash, the treatment time of domestic sludge is shortened, the treatment efficiency is improved, the nutrient components in the sludge are reserved to the greatest extent, the content of nutrient elements in the sludge is increased, and the treated product can be used as landscaping or organic fertilizer to achieve the aim of synergistic effect.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (10)
1. The utility model provides a cooperation plant ash alkali method domestic sludge treatment system, a serial communication port, including biological flocculation sediment device (1) and high Wen Mohai and alkali method stabilization integrated device (21) that connect gradually, install agitating unit (23) on high Wen Mohai and the alkali method stabilization integrated device (21), electric heater unit (26) are installed to high Wen Mohai and alkali method stabilization integrated device (21) lateral wall, plant ash feed inlet (24) have been seted up on high Wen Mohai and alkali method stabilization integrated device (21) upper portion, screw discharging device (22) are installed to high Wen Mohai and alkali method stabilization integrated device (21) lower part, the output of screw discharging device (22) has discharge gate (27).
2. The synergistic plant ash alkaline method domestic sludge treatment system as claimed in claim 1, wherein the biological flocculation precipitation device (1) comprises a primary precipitation tank (6) and a secondary precipitation tank (8) which are mutually communicated through a reducing pipeline (3), a biological microbial agent feeding port (4) is formed in the upper part of the primary precipitation tank (6), and a spraying device (2) and a rotary microbial carrier (5) are arranged in the primary precipitation tank (6).
3. A synergistic plant ash alkali process domestic sludge treatment system as claimed in claim 2, wherein the rotating microbial carrier (5) is a porous carrier.
4. A synergistic plant ash alkali method domestic sludge treatment system as claimed in claim 2, wherein the lower end of the primary sedimentation tank (6) is connected with a primary sedimentation tank sedimentation bucket (7), and the angle between the side wall of the primary sedimentation tank sedimentation bucket (7) and the horizontal plane is 25 ° to 35 °.
5. A synergistic plant ash alkali domestic sludge treatment system as claimed in claim 2, characterised in that the lower part of the inner side of the secondary sedimentation tank (8) is provided with obliquely arranged wave plates (9), the angle between the horizontal planes of the wave plates (9) being 40 ° to 50 °.
6. A synergistic plant ash alkaline domestic sludge treatment system as claimed in any one of claims 1 to 5, characterised in that a preheating device (19) is connected between the biological flocculation precipitation device (1) and the high temperature innocuous and alkaline stabilizing integrated device (21), a heat exchange tube (20) is installed in the preheating device (19), and a waste heat recovery device (25) communicated with the heat exchange tube (20) is installed in the high Wen Mohai and alkaline stabilizing integrated device (21).
7. The synergistic plant ash alkali method domestic sludge treatment system as claimed in claim 6, wherein a screw conveyer (12) is connected between the biological flocculation precipitation device (1) and the preheating device (19), the screw conveyer (12) comprises a casing (14), a screw shaft assembly (15) driven by a driving device (17) is installed in the casing (14), and a screw blade (16) is installed on the screw shaft assembly (15).
8. A co-plant ash alkaline domestic sludge treatment system as claimed in any one of claims 1 to 5 wherein the discharge outlet (27) is connected with a rotary cooling device (29).
9. A co-plant ash alkaline domestic sludge treatment system as claimed in claim 8 wherein the output of the rotary cooling device (29) is provided with a packaging device (30).
10. A synergistic plant ash alkaline domestic sludge treatment system as claimed in any one of claims 1 to 5, characterised in that the high Wen Mohai and alkaline stabilizing integrated device (21) is connected in turn by means of an air outlet duct (28) to a UV photo-oxygen purifier (31), a tertiary spray tower (32) and an activated carbon adsorption tank (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322372792.2U CN220703482U (en) | 2023-09-01 | 2023-09-01 | Synergistic plant ash alkaline method domestic sludge treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322372792.2U CN220703482U (en) | 2023-09-01 | 2023-09-01 | Synergistic plant ash alkaline method domestic sludge treatment system |
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