CN113045173A - Trap type sludge in-situ treatment device and method - Google Patents
Trap type sludge in-situ treatment device and method Download PDFInfo
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- CN113045173A CN113045173A CN202011157842.XA CN202011157842A CN113045173A CN 113045173 A CN113045173 A CN 113045173A CN 202011157842 A CN202011157842 A CN 202011157842A CN 113045173 A CN113045173 A CN 113045173A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
Abstract
The invention relates to the technical field of environment-friendly equipment, in particular to a trap type sludge in-situ treatment device and method. The utility model provides a trap formula silt normal position processing apparatus which characterized in that: comprises a trap pipe, a water blocking pipe and a heating device; the trap pipe is used for being placed in a lake bed or a river bed, and a trap cavity for storing sludge is formed in the trap pipe; the upper end of the water blocking pipe is higher than the water surface, and the lower end of the water blocking pipe is butted with the upper end of the trap pipe to block river water from entering the trap cavity; the heating device heats and dries sludge in the trap cavity of the trap pipe. By adopting the scheme, the sludge is dried and dehydrated in situ, so that the secondary pollution of the cleared sludge to the environment is reduced; and the scheme can concentrate the sludge in the trap pipe by utilizing natural factors such as lake flow and the like for water-proof treatment, has small disturbance to the benthonic habitat, small influence range and small damage to underwater ecology.
Description
Technical Field
The invention relates to the technical field of environment-friendly equipment, in particular to a trap type sludge in-situ treatment device and method.
Background
With the continuous improvement of living standard and the gradual enhancement of environmental awareness of people, people pay great attention to the quality of surrounding living environment and living space. In the face of increasingly worsened environments, the sound of improvement and treatment is higher and higher. Wherein the protection and the pollution control of the water body environment are particularly prominent. Due to the great treatment difficulty of various water body environments (including reservoirs, lakes, rivers, ditches and the like) in cities and surrounding areas, a large amount of sludge is deposited at the water bottom after years of treatment, the water body environment is seriously influenced, the water quality is blackened and smelled, and the problems of disturbance of residents occur occasionally. The water body dredging is the whole process of cutting, collecting, extracting and conveying sludge of river channels, lakes and the like from the water bottom to a specific area for centralized environmental protection treatment. Domestic garbage and construction garbage in the urban sludge are accumulated into mountains, and a large amount of methane, toxic gas, odor and even harmful pollutants such as heavy metals are accumulated at the bottom of lakes. How to carry out environment-friendly dredging and how to treat the cleared sludge is a problem which is discussed in the international society at present. If a certain link is not well treated, serious and large-area secondary pollution is brought to the dredging project, and the consequences are not imaginable.
Pollutants in the sludge are mainly distributed in the floating sludge and the flowing sludge in the area with the depth of 0-20 cm on the bottom sludge shallow layer, the upper part of the sludge is slurry (floating sludge), the lower part of the sludge is flowing plastic (flowing sludge) and has odor, the sludge is generally black or gray black, the geological deposition age is newer, the organic matter deposition speed is high, and the sludge is a product which is influenced by human activities (eutrophication or enclosure culture) to the water environment for nearly decades. The partial sludge presents the characteristic of bed load, is easy to be lifted under the action of comprehensive power factors such as wind waves, wind currents and the like, and is gathered in the downward wind direction under the action of wind power boosting. The polluted layer of the sludge can be resuspended after being slightly stirred in the water body, and is a main accumulation reservoir and release source of endogenous pollutants in the water body. The cleaning of the bed load sludge can visually bring the nutrient salt and the heavy metal which pollute the water body out of the water body.
The existing sediment dredging technology mainly comprises water conservancy scouring, pump pumping, mud dredging, blowing filling, shipping, stirring and the like, the technologies not only stir the sediment and accelerate the release of nutrient salts in the sediment into a water body, but also occupy land resources because the cleared sediment needs to be dehydrated, stacked and buried, secondary pollution is easy to cause, and even under the conditions of lack of scientific cognition and deep investigation, the sediment is dug out and cleaned, so that the original lake bed river water ecological system is broken. In view of the above drawbacks, it is necessary to improve equipment used in the prior art to realize in-situ treatment and reduce secondary damage generated during sludge disposal by providing a sludge capturing ditch which is excavated at a certain depth and is driven by natural hydrodynamic force, wherein floating sludge and flowing sludge fall to the bottom of the ditch when passing through the ditch.
Disclosure of Invention
In order to solve the above problems, a first object of the present invention is to provide a trap type sludge in-situ treatment device, which performs drying and dewatering treatment on sludge in situ, so as to reduce secondary pollution of the cleared sludge to the environment; and the scheme can concentrate the sludge in the trap pipe by utilizing natural factors such as lake flow and the like for water-proof treatment, has small disturbance to the benthonic habitat, small influence range and small damage to underwater ecology.
The second purpose of the invention is to provide an in-situ treatment method of the trap sludge, which adopts the in-situ treatment device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a trap formula silt normal position processing apparatus which characterized in that: comprises a trap pipe, a water blocking pipe and a heating device;
the trap pipe is used for being placed in a lake bed or a river bed, and a trap cavity for storing sludge is formed in the trap pipe;
the upper end of the water blocking pipe is higher than the water surface, and the lower end of the water blocking pipe is butted with the upper end of the trap pipe so as to block river (lake) water from entering the trap cavity;
the heating device heats and dries sludge in the trap cavity of the trap pipe.
The invention adopts the technical scheme, and relates to a trap type sludge in-situ treatment device. The trap pipe is arranged in a lake bed or a river bed, and sludge can flow into the trap cavity under the action of manpower or water body flow; in this way, the trap tube separates the sludge inside the trap chamber from the sludge outside the tube. The water blocking pipe can block river water from entering the trap cavity, namely, the river water in the pipe is separated from the river water outside the pipe; therefore, the river water in the water retaining pipe can be drained. The heating device heats and dries sludge in the trap cavity of the trap pipe, and water vapor of the sludge is continuously evaporated and gradually dried.
Compared with the existing sludge cleaning, the scheme has the advantages that the sludge is dried and dehydrated in situ, so that the secondary pollution of the cleaned sludge to the environment is reduced; and the scheme can concentrate the sludge in the trap pipe by utilizing natural factors such as lake flow and the like for water-proof treatment, has small disturbance to the benthonic habitat, small influence range and small damage to underwater ecology.
Preferably, the heating device comprises a heat pipe capable of drilling into the ground to obtain geothermal energy, and a heat conducting component which is positioned in the trap cavity of the trap pipe and conducts heat with the heat pipe. Further inject heating device's concrete structure among this technical scheme, this heating device drills into the ground end through the heat pipe and acquires geothermal energy and conduct geothermal energy out, utilizes geothermal energy to dry the silt of accomodating promptly, need not the energy of consumption. Compared with other heating modes, the scheme also reduces pollution and potential safety hazards in use and is not limited by conditions.
Preferably, the heat conducting member is disposed on an inner wall of the trap pipe or formed inside the trap pipe, and the heat conducting pipe is conducted with the heat conducting member to realize heat conduction. On the principle that the received sludge is dried by utilizing geothermal energy according to the technical scheme, the scheme further limits that the heat conduction component is arranged around the inner side wall of the trap pipe or is formed in the trap pipe, when the heat conduction pipe transmits heat to the heat conduction component, the heat conduction component can heat and dry the sludge from outside to inside in a mode of surrounding the internal sludge, and the peripheral sludge is closer to the heat conduction component and is easier to heat and dry; the sludge in the inner part is subjected to heat conduction in a plurality of directions in the circumferential direction, so that the sludge is relatively easy to dry, and the sludge in each area is uniformly heated.
Preferably, a heat conduction cavity is arranged in the heat conduction component or a heat conduction cavity is formed between the heat conduction component and the trap pipe; and heat conduction fluid media which are mutually communicated are arranged in the heat conduction cavities in the heat conduction pipes and the heat conduction parts. In the technical scheme, after the heat conduction pipe obtains terrestrial heat, heat is transferred to the heat conduction cavity in the heat conduction part through the heat conduction fluid medium, and the heat conduction efficiency is higher.
Preferably, the trap tube comprises a bottom plate and a side wall arranged around the edge of the bottom plate; and a trap cavity is formed between the side wall and the bottom plate, and the heat conduction pipe penetrates through the bottom plate of the trap pipe. As described in the above technical solutions, the trap tube separates the sludge in the trap chamber from the sludge outside the trap tube, so that the side wall of the trap tube, which surrounds the trap chamber, is necessary, and the bottom plate is not necessary. In another embodiment, the trap tube may not be provided with a bottom plate; in contrast, the bottom plate is arranged at the bottom of the trap pipe, so that the drying efficiency can be improved, and the time consumed by drying is reduced.
Preferably, the heat conducting member is an inner tube body disposed inside the trap tube; a heat conducting cavity is formed between the inner pipe body and the trap pipe; the heat conduction pipe at least comprises a lower pipe section below the trap pipe and an upper pipe section above the trap pipe; the upper end of the lower pipe section is connected with a bottom plate of the trap pipe, the upper end of the upper pipe section is higher than the water surface, and the lower end of the upper pipe section is communicated with the inner pipe body or the trap pipe; the upper pipe section, the lower pipe section and the heat conducting cavity are communicated. On the basis of the scheme that the heat conduction pipe transfers heat to the heat conduction component through the heat conduction fluid medium, the scheme further defines the connection structure of the heat conduction component, the trap pipe and the heat conduction pipe. Specifically, the heat conducting component in the scheme is an inner tube body, an inner tube and an outer tube are formed between the inner tube body and the trap tube, and a heat conducting cavity is formed inside the inner tube body and is similar to a heat conducting interlayer; the heat conducting cavity is provided with two openings, one opening is communicated with the lower pipe section, the other opening is communicated with the upper pipe section, so that the heat conducting cavity, the lower pipe section and the upper pipe section are all communicated, and heat conducting fluid media can circulate among the heat conducting cavity, the lower pipe section and the upper pipe section. When the bottom end of the insertion ground is under the action of terrestrial heat, the heat-conducting fluid medium in the heat-conducting pipe is heated, the specific gravity of the heated bottom medium is lighter than that of the upper medium, so that up-and-down convection is formed, the heat-conducting fluid medium flows into the heat-conducting cavity through the heat-conducting pipe, and sludge in the trap pipe is heated through the heat-conducting component.
Preferably, the trap further comprises a plurality of mud guide grooves which are radially arranged relative to the trap pipe, the depth of the near end of each mud guide groove is larger than that of the far end, and the near end of each mud guide groove points to the trap cavity. The technical scheme is that the sludge guide groove is further arranged, and through the arrangement of the sludge guide groove, sludge far away from the trap type sludge in-situ treatment device flows into the sludge guide groove under the action of lake flow and then enters the trap pipe from the sludge guide groove, so that natural collection of the sludge is realized.
Preferably, the lower end of the water blocking pipe is sleeved on the outer end part of the trap pipe. The scheme that the water retaining pipe is directly arranged at the upper end of the trap pipe is that the joint is required to be sealed, the water retaining pipe in the scheme is slightly larger than the trap pipe, and the water retaining pipe is sleeved outside the trap pipe and is directly inserted into a lake bed to achieve a sealing effect without additional sealing.
A trap type sludge in-situ treatment method is characterized by comprising the following steps: the method comprises the following steps:
s1: the trap pipe is placed in a lake bed or a river bed, and sludge naturally or artificially flows into the trap pipe until the trap pipe is full and does not settle;
s2: covering the trap pipe with a water retaining pipe, and pumping out the water covering the trap pipe;
s3: heating sludge in the trap pipe by using a heating device, wherein the sludge naturally generates anaerobic digestion and generates heat, and water vapor of the sludge is continuously evaporated under the superposition of natural sedimentation, terrestrial heat and biochemical heat, gradually dried and continuously settled for volume reduction until the water content is lower than a preset standard;
s4: covering the silt in the trap pipe with a water-resisting material, and pulling out the water-stopping pipe;
s5: repeating the steps S1-S4 until the trap is filled with sludge with the water content lower than the preset standard, and executing S6;
s6: firstly, sludge in the trap pipe is removed by a pump or a proper mode from the part with the lowest water content of the sludge at the bottom of the trap pipe, and the water blocking pipe is pulled out.
Preferably, the step S1 includes disposing mud guide grooves or digging mud guide grooves disposed along the radial direction of the trap pipe; due to the fact that the sludge has fluidity, the sludge close to the trap opening of the trap type sludge in-situ treatment device directly flows into the trap pipe under the action of lake flow, the sludge far away from the trap type sludge in-situ treatment device flows into the sludge guide groove under the action of the lake flow, and then flows into the trap pipe from the sludge guide groove, and natural collection of the sludge is achieved.
Preferably, the heating device comprises a heat pipe capable of drilling into the ground to obtain geothermal energy, and a heat conduction component which is positioned in the trap cavity of the trap pipe and generates heat conduction with the heat pipe, and heat conduction fluid media which are mutually communicated are arranged in the heat pipe and the heat conduction cavity in the heat conduction component; step S3 is specifically: and injecting a heat-conducting fluid medium into the heat-conducting pipe, wherein the heat-conducting fluid medium in the heat-conducting pipe absorbs underground heat and flows to the upper part of the heat-conducting pipe and the heat-conducting part to heat sludge in the trap pipe.
In conclusion, compared with the prior art, the invention has the beneficial effects that:
compared with the prior sludge cleaning, the trap type sludge in-situ treatment device and method disclosed by the invention can collect sludge by utilizing natural factors such as lake flow and the like, do not need to consume energy, have small disturbance to the benthic habitat in the sludge collection process, have small influence range and have small ecological damage to the water bottom.
By the trap type sludge in-situ treatment device and the trap type sludge in-situ treatment method, the accommodated sludge is dried by using geothermal energy without consuming extra energy.
According to the trap type sludge in-situ treatment device and method disclosed by the invention, the sludge is dried by utilizing terrestrial heat without adding chemicals such as flocculation and the like, so that the phenomenon that the sludge cannot be utilized after chemical agents are used is avoided.
Finally, the device and the method for in-situ treatment of the trap type sludge realize continuous treatment of the flow state sludge with the most serious underwater pollution and are beneficial to endogenous treatment of eutrophic water bodies.
Drawings
Fig. 1 is a sectional view of the trap sludge in-situ treatment apparatus shown in example 1.
Fig. 2 is a top view of the trap sludge in-situ treatment apparatus of embodiment 1.
Fig. 3 is a process flow chart of the trap sludge in-situ treatment method in embodiment 2.
In the figure, 1, a water retaining pipe; 2. a trap tube; 3. a heat conducting pipe; 4. a heat-conducting fluid medium; 5. sludge; 6. a mud guide groove; 7. a lake bed; 8. a water surface; 9. heat; 10. water vapor; 11. a heat conductive member; 12. a heat conducting cavity; 31. a lower pipe section; 32. an upper pipe section.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1:
as shown in fig. 1 and 2, the present embodiment relates to a trap sludge in-situ treatment device, which comprises a trap pipe 2, a water blocking pipe 1 and a heating device. The trap pipe 2, the water blocking pipe 1 and the heating device have the following specific structures:
the trap pipe 2 is used for being placed in a lake bed 7 or a river bed, and a trap cavity for storing sludge is formed inside the trap pipe 2. Specifically, the trap tube 2 includes a bottom plate and a side wall disposed around an edge of the bottom plate, and a trap cavity is formed between the side wall and the bottom plate. The trap pipe 2 in this solution is used to be placed in a lake 7 or river bed, enabling the sludge 5 to flow into the trap cavity by the action of manual work or water flow. The trap tube 2 is required to separate sludge in the trap cavity from sludge outside the trap tube, and the side wall of the trap tube 2 arranged around the trap tube is necessary, and the bottom plate is not necessary. In another embodiment, the trap tube 2 may not be provided with a bottom plate. In contrast, the bottom plate is arranged at the bottom of the trap pipe 2, so that the drying efficiency can be improved, and the time consumed by drying can be reduced. In practical use, the diameter of the trap pipe is larger than 10cm, the upper end of the trap pipe is flush with the lake bed, and the depth of the lower end of the trap pipe is not more than 100 meters.
The upper end of the water blocking pipe 1 is higher than the water surface 8, and the lower end of the water blocking pipe is in butt joint with the upper end of the trap pipe 2 to block river water from entering the trap cavity; even if the river water inside the pipe is isolated from the river water outside the pipe. In a further embodiment, the lower end of the water retaining pipe 1 is sleeved on the outer end of the trap pipe 2. The scheme that the water blocking pipe 1 is directly arranged at the upper end of the trap pipe 2 needs to seal the connection part, and the water blocking pipe 1 in the scheme is slightly larger than the trap pipe 2, is sleeved outside the trap pipe 2 and is directly inserted into the lake bed 7 to achieve a sealing effect without additional sealing.
The heating device heats and dries sludge in the trap cavity of the trap pipe 2. When the device is used, after the river water in the water retaining pipe 1 is pumped to be dry, the sludge in the trap cavity of the trap pipe 2 is heated by the heating device, so that the water vapor 10 of the sludge is continuously evaporated and gradually dried. The heating device can be any device which can extend into the trap cavity of the trap pipe 2 to heat the sludge; such as an electric heating tube, extends into the trap cavity of the trap tube 2 from the top of the water blocking tube 1.
In a more preferred embodiment of the present invention, the heating device includes a heat pipe 3 capable of drilling into the ground to obtain geothermal energy, and a heat conducting member 11 located inside the trap cavity of the trap pipe 2 and conducting heat with the heat pipe 3, the heat pipe 3 passes through the bottom plate of the trap pipe 2, the upper end of the heat pipe 3 is higher than the lake bed, and the lower end of the heat pipe 3 is deeper than 100 meters. Further inject heating device's concrete structure among this technical scheme, this heating device drills into the ground end through heat pipe 3 and acquires geothermal energy and conduct out geothermal energy, utilizes geothermal energy to dry the silt of accomodating promptly, need not to consume extra energy. Compared with other heating modes, the scheme also reduces pollution and potential safety hazards in use and is not limited by conditions. In a further embodiment, the heat conducting member 11 is disposed on an inner sidewall of the trap tube 2 or formed inside the trap tube 2, and the heat conducting pipe 3 is conducted to the heat conducting member 11 for heat conduction. Above-mentioned technical scheme records and utilizes geothermal energy to carry out the principle of drying to the silt of accomodating, and what this scheme further injectd heat-conducting component 11 centers on sets up or forms inside trap pipe 2 around the inside wall of trap pipe 2, and when heat pipe 3 transmitted heat 9 to heat-conducting component 11, heat-conducting component 11 can be with enclosing the mode of closing inside silt and from outer to interior to silt heating mummification, and outlying silt is closer with heat-conducting component 11, changes the mummification of being heated more. The sludge in the inner part is subjected to heat conduction in a plurality of directions in the circumferential direction, so that the sludge is relatively easy to dry, and the sludge in each area is uniformly heated.
Based on the above scheme, the heat conducting component 11 in the scheme is internally provided with a heat conducting cavity or a heat conducting cavity 12 is formed between the heat conducting component 11 and the trap pipe 2. The heat conduction pipes 3 and the heat conduction cavities 12 in the heat conduction members 11 are provided with heat conduction fluid media 4 communicated with each other, and the heat conduction fluid media 4 are generally selected from water. After the heat conduction pipe 3 obtains the geothermal heat, the heat 9 is transferred to the heat conduction cavity 12 in the heat conduction part 11 through the heat conduction fluid medium 4, and the heat conduction efficiency is higher. The connection structure of the heat conductive member 11, the trap pipe 2, and the heat conductive pipe 3 is as follows: the heat conducting member 11 is an inner tube disposed inside the trap tube 2, and a heat conducting cavity 12 is formed between the inner tube and the trap tube 2. The heat conductive pipe 3 includes at least a lower pipe segment 31 below the trap pipe 2 and an upper pipe segment 32 above the trap pipe 2. The upper end of the lower pipe section 31 is connected with the bottom plate of the trap pipe 2, and the lower pipe section 31 can be formed by splicing a plurality of pipe bodies because the lower pipe section 31 needs to obtain geothermal energy and possibly needs to drill into the ground with the depth of hundreds of meters. The upper end of the upper pipe section 32 is above the water surface 8 and the lower end is in communication with the inner pipe body or trap pipe 2. The upper pipe section 32, the lower pipe section 31 and the heat conducting cavity 12 are communicated. On the basis of the scheme that the heat conduction pipe 3 transfers the heat 9 to the heat conduction member 11 through the heat conduction fluid medium 4, the heat conduction member 11 in the scheme is an inner pipe body, an inner pipe and an outer pipe are formed between the inner pipe body and the trap pipe 2, and a heat conduction cavity 12 is formed inside the inner pipe body, and is similar to a heat conduction interlayer. The heat conducting cavity 12 is provided with two openings, one opening is communicated with the lower pipe section 31, and the other opening is communicated with the upper pipe section 32, so that the heat conducting cavity 12, the lower pipe section 31 and the upper pipe section 32 are all communicated, and the heat conducting fluid medium 4 can be communicated among the heat conducting cavity 12, the lower pipe section 31 and the upper pipe section 32. When the bottom end of the inserted ground is heated under the action of terrestrial heat, the heat-conducting fluid medium 4 in the heat-conducting pipe 3 is heated, when the specific gravity of the bottom medium is lower than that of the upper medium after the temperature of the bottom medium is raised, the up-and-down convection is formed, the heat-conducting fluid medium 4 flows into the heat-conducting cavity 12 through the heat-conducting pipe 3, and the sludge in the trap pipe 2 is heated through the heat-conducting component 11.
Finally, the trap type sludge in-situ treatment device further comprises a plurality of sludge guide grooves 6 which are radially arranged relative to the trap pipe 2, the depth of the near end of each sludge guide groove 6 is larger than that of the far end, and the near end points to the trap cavity. This technical scheme still sets up and leads mud groove 6, through leading the setting of mud groove 6, makes the silt of keeping away from trap formula silt normal position processing apparatus flow into and lead mud groove 6 under the effect of lake flow, and in getting into trap pipe 2 from leading mud groove 6 again, realize the nature of silt and collect. The mud guiding groove 6 in the scheme is used as a trap type mud in-situ treatment device, is a groove component and is an integral part of the device. Of course, the mud guiding groove 6 may also be a ditch which is temporarily dug on the riverbed, and at this time, the mud guiding groove 6 is not used as a component of the trap type sludge in-situ treatment device.
In conclusion, compared with the prior art, the invention has the beneficial effects that:
compared with the prior sludge cleaning, the trap type sludge in-situ treatment device and method disclosed by the invention can collect sludge by utilizing natural factors such as lake flow and the like, do not need to consume energy, have small disturbance to the benthic habitat in the sludge collection process, have small influence range and have small ecological damage to the water bottom.
Through the trap type sludge in-situ treatment device and the method, the accommodated sludge is dried by using geothermal energy without consuming energy.
According to the trap type sludge in-situ treatment device and method disclosed by the invention, the sludge is dried by utilizing terrestrial heat without adding chemicals such as flocculation and the like, so that the phenomenon that the sludge cannot be utilized after chemical agents are used is avoided.
Finally, the device and the method for in-situ treatment of the trap type sludge realize continuous treatment of the flow state sludge with the most serious underwater pollution and are beneficial to endogenous treatment of eutrophic water bodies.
The concrete sludge treatment method of the trap sludge in-situ treatment device described in the above embodiment is referred to embodiment 2.
Example 2:
as shown in fig. 3, this embodiment describes an in-situ treatment method for the trap sludge, which uses the in-situ treatment apparatus for the trap sludge in embodiment 1, and specifically includes the following steps:
s1: the trap pipe 2 is placed in the lake bed 7 or the river bed, and the sludge naturally or artificially flows into the trap pipe 2 until the trap pipe is full and does not settle. Specifically, the step also arranges a mud guide groove 6 or digs the mud guide groove 6 along the radial direction of the trap pipe 2; due to the fact that the sludge has fluidity, the sludge close to the trap opening of the trap type sludge in-situ treatment device directly flows into the trap pipe 2 under the action of lake flow, the sludge far away from the trap type sludge in-situ treatment device flows into the sludge guide groove 6 under the action of the lake flow, and then flows into the trap pipe 2 from the sludge guide groove 6, and natural collection of the sludge is achieved.
S2: and covering the trap pipe 2 with the water blocking pipe 1, and pumping out the water covering on the trap pipe 2.
S3: the sludge in the trap pipe 2 is heated by adopting a heating device, specifically, water is injected into the heat conduction pipe 3, the water in the heat conduction pipe 3 absorbs the underground heat 9 and flows to the upper part of the heat conduction pipe 3 and the heat conduction part 11 to heat the sludge in the trap pipe 2. Meanwhile, the sludge naturally generates anaerobic digestion and generates heat 9, water vapor 10 of the sludge is continuously evaporated under the superposition of natural sedimentation, terrestrial heat and biochemical heat, and the sludge is gradually dried and continuously settled to reduce the volume until the water content is lower than the preset standard.
S4: covering the sludge in the trap pipe 2 with a water-proof material, and pulling out the water blocking pipe 1.
S5: and repeating the steps S1-S4 until the trap is filled with sludge with the water content lower than the preset standard, and executing S6.
S6: firstly, the sludge in the whole trap pipe 2 is removed by a pump or a proper mode from the part with the lowest water content of the sludge at the bottom of the trap pipe, and the water blocking pipe 1 is pulled out.
The following is a description of the meaning of the block diagram in FIG. 3, in which
Collecting means that the sludge is naturally or artificially flowed into the trap tube 2, that is, step S1;
the water blocking means that the trap pipe 2 is covered by the water blocking pipe 1 to block river water from entering the trap cavity; namely, step S2;
drying means heating and drying the sludge in the trap pipe 2 by a heating device, and is recorded in S3;
digestion represents anaerobic digestion of organic matter in the sludge entering the trap tube 2 under natural conditions, as described in S3;
the sealing means covering the sludge in the trap pipe 2 with a water-proof material, namely, S4;
the cleaning represents cleaning the whole sludge in the trap pipe 2, namely, the step S6;
the small loop means repeating the steps S1-S4; the large loop refers to repeating steps S1-S6.
And (3) recording an experiment:
the applicant adopts the trap sludge in-situ treatment device described in embodiment 1 and the trap sludge in-situ treatment method described in embodiment 2, and obtains the following data through multiple experiments; when the lower end of the heat conduction pipe 3 is inserted into the ground to a depth of 500 m, the temperature in the trap pipe 2 can reach more than 30 ℃; when the lower end of the heat conduction pipe 3 is inserted into the ground to a depth of 700 m, the temperature in the trap pipe 2 can be increased by about 6 ℃. Although the depth of the heat conduction pipe inserted into the ground bottom is different in the two sets of data, the moisture content of the sludge in the trap pipe 2 can be lower than 75%, but compared with the scheme of inserting the heat conduction pipe 3 into the ground bottom by 700 meters, the scheme of inserting the heat conduction pipe 3 into the ground bottom has higher drying efficiency and takes shorter time. From its experiments, it can be seen that the energy obtained by the heat conduction pipe 3 is related to the drying degree of the sludge in the trap pipe 2; the device and the method can lead the moisture content of the dried sludge to be lower than 60% under the condition of enough drying time.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (10)
1. The utility model provides a trap formula silt normal position processing apparatus which characterized in that: comprises a trap pipe (2), a water blocking pipe (1) and a heating device;
the trap pipe (2) is arranged in the lake bed (7) or the river bed, and a trap cavity for storing the sludge (5) is formed inside the trap pipe (2);
the upper end of the water blocking pipe (1) is higher than the water surface (8), and the lower end of the water blocking pipe is in butt joint with the upper end of the trap pipe (2) and is used for blocking river (lake) water from entering the trap cavity;
the heating device is used for heating and drying the sludge in the trap cavity of the trap pipe (2).
2. The in-situ treatment device for the trapped sludge according to claim 1, wherein: the heating device comprises a heat conduction pipe (3) capable of drilling into the ground to obtain geothermal energy, and a heat conduction part (11) which is positioned in the trap cavity of the trap pipe (2) and conducts heat with the heat conduction pipe (3).
3. The in-situ treatment device for the trapped sludge according to claim 2, wherein: the heat conducting component (11) is arranged on the inner side wall of the trap pipe (2) or formed inside the trap pipe (2), and the heat conducting pipe (3) is communicated with the heat conducting component (11) to realize heat conduction.
4. The in-situ treatment device for the trapped sludge according to claim 3, wherein: a heat conduction cavity (12) is arranged in the heat conduction component (11) or the heat conduction cavity (12) is formed between the heat conduction component (11) and the trap pipe (2); and heat-conducting fluid media (4) which are mutually communicated are arranged in the heat-conducting cavities (12) in the heat-conducting pipes (3) and the heat-conducting parts (11).
5. The in-situ treatment device for the trapped sludge according to any one of claims 1 to 4, wherein: the trap pipe (2) comprises a bottom plate and a side wall arranged around the edge of the bottom plate; a trap cavity is formed between the side wall and the bottom plate, and the heat conduction pipe (3) penetrates through the bottom plate of the trap pipe (2).
6. The in-situ treatment device for the trapped sludge according to claim 5, wherein: the heat conducting component (11) is an inner tube body arranged on the inner side of the trap tube (2); a heat conducting cavity (12) is formed between the inner pipe body and the trap pipe (2); the heat conducting pipe (3) comprises at least a lower pipe section (31) below the trap pipe (2) and an upper pipe section (32) above the trap pipe (2); the upper end of the lower pipe section (31) is connected with the bottom plate of the trap pipe (2), the upper end of the upper pipe section (32) is higher than the water surface (8), and the lower end of the upper pipe section is communicated with the inner pipe body or the trap pipe (2); the upper pipe section (32), the lower pipe section (31) and the heat conducting cavity (12) are communicated.
7. The in-situ treatment device for the trapped sludge according to claim 1, wherein: the trap is characterized by further comprising a plurality of mud guide grooves (6) which are radially arranged relative to the trap pipe (2), wherein the depth of the near end of each mud guide groove (6) is larger than that of the far end, and the near end points to the trap cavity.
8. A trap type sludge in-situ treatment method is characterized by comprising the following steps: the method comprises the following steps:
s1: the trap pipe (2) is placed in a lake bed (7) or a river bed, and the sludge (5) naturally or artificially flows into the trap pipe (2) until the trap pipe is full and does not settle any more;
s2: covering the trap pipe (2) with the water blocking pipe (1), and pumping out the water covering on the trap pipe (2);
s3: heating sludge in the trap pipe (2) by using a heating device, wherein the sludge naturally generates anaerobic digestion and generates heat (9), and water vapor (10) of the sludge is continuously evaporated under the superposition of natural sedimentation, heating and biochemical heat, gradually dried and continuously settled for volume reduction until the water content is lower than a preset standard;
s4: covering the sludge in the trap pipe (2) with a water-proof material, and pulling out the water-blocking pipe (1);
s5: repeating the steps S1-S4; executing S6 when the trap is filled with sludge with the water content lower than the preset standard;
s6: and removing the sludge in the whole trap pipe (2) and pulling out the water blocking pipe (1).
9. The method of claim 8, wherein the method comprises: the step S1 comprises arranging mud guide grooves (6) or digging mud guide grooves (6) arranged along the radial direction of the trap pipe (2); the sludge close to the trap opening of the trap type sludge in-situ treatment device directly flows into the trap pipe (2) under the action of lake flow, the sludge far away from the trap type sludge in-situ treatment device flows into the sludge guide groove (6) under the action of the lake flow, and then enters the trap pipe (2) from the sludge guide groove (6), so that the natural collection of the sludge is realized.
10. The method of claim 8, wherein the method comprises: the heating device in the step S3 heats the sludge in the trap pipe (2), specifically, the heat conducting fluid medium (4) is injected into the heat conducting pipe (3), the heat conducting fluid medium (4) inside the heat conducting pipe (3) absorbs the underground heat (9), and flows to the upper part of the heat conducting pipe (3) and the heat conducting part (11), so as to heat the sludge in the trap pipe (2).
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| CN202011157842.XA CN113045173A (en) | 2020-10-26 | 2020-10-26 | Trap type sludge in-situ treatment device and method |
| PCT/CN2020/131050 WO2022088327A1 (en) | 2020-10-26 | 2020-11-24 | Trap-type sludge in-situ treatment device and method |
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| CN202011157842.XA CN113045173A (en) | 2020-10-26 | 2020-10-26 | Trap type sludge in-situ treatment device and method |
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