Sludge treatment device and sewage and sludge co-treatment and resource utilization system

Abstract

The utility model relates to a sludge treatment device and a sewage sludge co-treatment and resource utilization system, the sludge treatment device comprises a kitchen garbage feeding module, a wet oxidation treatment module and a controller, the kitchen garbage feeding module comprises a storage box and a feeding unit, the storage box comprises a cavity, a first feed port and a first discharge port, and the feeding unit comprises a second feed port and a second discharge port. The first feed port and the first discharge port are respectively communicated with the cavity, the first feed port is used for adding kitchen garbage into the storage box, and the first discharge port is communicated with the charging unit; the wet oxidation treatment module comprises a wet oxidation reaction unit, and the wet oxidation reaction unit is used for performing wet oxidation treatment on a mixture of the sludge and the kitchen garbage to generate a treatment product; the controller is respectively connected with the kitchen garbage feeding module and the wet oxidation treatment module, so that the sludge can be treated, the kitchen garbage can be simultaneously subjected to cooperative treatment, the pressure of kitchen garbage treatment is relieved, and the sludge treatment device is wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a sludge treatment device and a system for coordinated treatment and resource utilization of sewage sludge. Background Art

[0002] Sludge is a residue of high molecular organic matter, organic nitrogen, nitrate nitrogen and sediment produced by sewage treatment plants during sewage treatment. It is a secondary product of sewage treatment and has the characteristics of high water content and large volume. Sludge treatment has always been a difficult problem in the field of waste treatment. The disposal cost of residual sludge has accounted for 25%-60% of the operating cost of sewage treatment plants. In recent years, researchers have been committed to wet oxidation treatment of sludge, which can not only greatly reduce the amount and volume of sludge, but also obtain small molecular organic matter and struvite, with low cost and low pollution. The obtained small molecular organic matter and struvite can also be turned into treasure and further used reasonably, thereby achieving sludge reduction and resource utilization. With the improvement of my country's urbanization level, the equipment for treating sludge using wet oxidation treatment technology has also developed rapidly. The sludge treatment device uses wet oxidation treatment to treat the sludge. Usually, the sludge is placed in a closed reactor, and air or oxygen is introduced as an oxidant under high temperature and high pressure conditions. The high molecular organic matter in the sludge is oxidized and decomposed according to the principle of immersed fuel, and the high molecular organic matter is converted into small molecular organic matter and inorganic matter, including hydrolysis, cracking and oxidation processes. Under such conditions, water is a very good reaction medium, with physical and chemical properties such as high diffusion coefficient, high mass transfer rate, low viscosity, good mixing, low dielectric constant, and complete miscibility with organic matter and gas components. It can modify, deodorize, detoxify, and reduce pollution of sludge within tens of minutes, and quickly achieve the purpose of sludge reduction.

[0003] However, in the process of implementing the embodiments of the utility model, the inventors found that the current device for treating sludge using a wet oxidation process has a single function, which is only to treat the secondary sludge produced by sewage treatment plants, and its extended application is limited. Utility Model Content

[0004] In view of the above problems, the utility model provides a sludge treatment device and a system for coordinated treatment and resource utilization of sewage sludge, which overcome the above problems or at least partially solve the above problems.

[0005] According to one aspect of an embodiment of the utility model, a sludge treatment device is provided, comprising a kitchen waste feeding module, comprising a storage box and a feeding unit, the storage box comprising a cavity, a first feed port and a first discharge port, the first feed port and the first discharge port are respectively connected to the cavity, the first feed port is used to add the kitchen waste to the storage box, and the first discharge port is connected to the feeding unit; a wet oxidation treatment module, comprising a wet oxidation reaction unit, the wet oxidation treatment module is provided with a second feed port and a second discharge port, the second feed port is used to add the sludge to the wet oxidation reaction unit, the second feed port is connected to the feeding unit, the feeding unit is used to add the kitchen waste in the storage box to the wet oxidation reaction unit, the wet oxidation reaction unit is used to perform wet oxidation treatment on a mixture of the sludge and the kitchen waste to produce a treatment product, and the second discharge port is used for the treatment product to flow out; a controller is respectively connected to the kitchen waste feeding module and the wet oxidation treatment module.

[0006] In an optional manner, the kitchen waste feeding module further includes a crushing unit, one end of the crushing unit is disposed in the cavity, and the other end of the crushing unit is connected to the controller.

[0007] In an optional embodiment, the crushing unit includes a first driver, a driving rod and a blade; the first driver is arranged outside the storage box, the first driver is connected to one end of the driving rod, the other end of the driving rod is located in the cavity, the other end of the driving rod is connected to the blade, the blade is located in the cavity, and the first driver is connected to the controller, and the controller is used to control the first driver to drive the driving rod to rotate.

[0008] In an optional manner, the number of the blades is at least 3.

[0009] In an optional manner, the kitchen waste feeding module also includes a filter plate, which is connected to the storage box; the filter plate divides the cavity into a first space and a second space, and the filter plate is provided with filter holes, and the first space and the second space are connected through the filter holes; one end of the crushing unit is arranged in the first space; the first space is connected to the first feed port, and the second space is connected to the first discharge port.

[0010] In an optional manner, the number of the filter holes is multiple, and the diameter of the filter holes is smaller than a preset size.

[0011] In an optional embodiment, the kitchen waste feeding module also includes a pressing unit; the pressing unit includes a second driver and a pressing rod, the second driver is arranged outside the storage box, the second driver is connected to one end of the pressing rod, and the other end of the pressing rod is vertically connected to the filter plate; the second driver is connected to the controller, and the controller is used to control the second driver, thereby driving the pressing rod to move back and forth in a direction parallel to the pressing rod.

[0012] In an optional manner, the gap between the filter plate and the storage box is not larger than the diameter of the filter hole.

[0013] In an optional embodiment, the feeding unit includes a pump.

[0014] According to another aspect of an embodiment of the utility model, a system for coordinated treatment and resource utilization of sewage sludge is provided, comprising the above-mentioned sludge treatment device and a sewage denitrification treatment module; the sewage denitrification treatment module is provided with a third feed port, a third discharge port and a fourth discharge port, the third feed port is used for adding a carbon source, and the sewage denitrification treatment module is used for utilizing the carbon source and denitrifying bacteria to treat the sewage into dischargeable clean water and produce the sludge; the third discharge port is used for discharging the clean water; the fourth discharge port is connected to the second feed port, and the fourth discharge port is used for discharging the sludge; the third feed port is connected to the second discharge port, and the third feed port is used for the treatment product to flow into the sewage denitrification treatment module; the sewage denitrification treatment module is connected to the controller.

[0015] The beneficial effects of the embodiments of the utility model include: providing a sludge treatment device, including a kitchen waste feeding module, a wet oxidation treatment module and a controller, wherein the kitchen waste feeding module includes a storage box and a feeding unit, the storage box includes a cavity, a first feed port and a first discharge port, the first feed port and the first discharge port are respectively connected to the cavity, the first feed port is used to add the kitchen waste to the storage box, and the first discharge port is connected to the feeding unit; the wet oxidation treatment module includes a wet oxidation reaction unit, the wet oxidation treatment module is provided with a second feed port and a second discharge port, the second feed port is used to add the sludge to the wet oxidation reaction unit, the second feed port is connected to the feeding unit, the feeding unit is used to add the kitchen waste in the storage box to the wet oxidation reaction unit, the wet oxidation reaction unit is used to perform wet oxidation treatment on a mixture of the sludge and the kitchen waste to produce a treatment product, and the second discharge port is used for the treatment product to flow out; the controller is respectively connected to the kitchen waste feeding module and the wet oxidation treatment module. The controller is used for the kitchen waste feeding module to add kitchen waste to the wet oxidation treatment module, and the controller is used to control the wet oxidation treatment module to perform wet oxidation treatment on the mixture of the sludge and the kitchen waste. Through the above-mentioned sludge treatment device, the sludge treatment device can not only treat the sludge, but also perform coordinated treatment on the kitchen waste at the same time, thereby alleviating the pressure of kitchen waste treatment. The sludge treatment device provided by the embodiment of the utility model has a wide range of applications.

[0016] In addition, the content of high molecular organic matter contained in general sludge is low, and the content of high molecular organic matter contained in kitchen waste is high, that is, the content of high molecular organic matter contained in kitchen waste is higher than the content of high molecular organic matter contained in sludge. After the sludge treatment device provided by the embodiment of the utility model treats the mixture of the sludge and kitchen waste at the same time, the high molecular organic matter contained in the two can be treated at the same time. Compared with the sludge treatment device of the prior art that only treats the sludge, the concentration of small molecular organic matter in the treatment product produced by it is high, and the application range of its treatment product is wide, which can achieve the replacement goal of small molecular organic matter (carbon source) for sludge resource utilization. Not only that, because the concentration of high molecular organic matter in kitchen waste is higher than that in general sewage sludge, after adding kitchen waste to the sludge, its calorific value is high, and the operation cost of the sewage sludge provided by the application is low in the method of resource utilization. In other words, the economic benefit of the treatment product produced by the mixture of sludge and kitchen waste treated by the sludge treatment device provided by the embodiment of the utility model is good, and then the economic benefit of the sludge treatment device provided by the embodiment of the utility model is good.

[0017] In addition, generally, the sand particles in food waste are less than those in other types of sewage sludge. When processing food waste, there is no need for additional sand removal, which can reduce energy consumption and obtain lower operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 It is a schematic diagram of a sludge treatment device provided by an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of a kitchen waste feeding module connected to a controller provided in an embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of a wet oxidation treatment module connected to a controller provided in an embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of a system for coordinated treatment and resource utilization of sewage sludge provided by an embodiment of the utility model.

[0023] The reference numerals in the specific implementation manner are as follows:

[0024] A sludge treatment device 100, a food waste feeding module 10, a wet oxidation treatment module 20, and a controller 30;

[0025] Material storage box 101, cavity 1011, first material inlet 1012, first material outlet 1013, first space 1011a, second space 1011b;

[0026] Feeding unit 102;

[0027] Crushing unit 103, first driver 1031, driving rod 1032, blade 1033;

[0028] Filter plate 104, filter holes 1041, gap 104a;

[0029] A pressing unit 105, a second driver 1051, and a pressing rod 1052;

[0030] Wet oxidation reaction unit 201, second feed port 202, second discharge port 203, wet oxidation reactor 2011, gas supply tank 2012, heat supplier 2013;

[0031] Mixing unit 204, mud storage tank 2041, heat exchanger 2042, mixing reactor 2043;

[0032] A system 200 for coordinated treatment and resource utilization of sewage sludge, a sewage denitrification treatment module 40, a third feed port 401, a third discharge port 402, and a fourth discharge port 403. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0035] See also Figure 1 The sludge treatment device 100 includes: a kitchen waste feeding module 10, a wet oxidation treatment module 20 and a controller 30. The kitchen waste feeding module 10 is connected to the wet oxidation treatment module 20, and the controller 30 is connected to the kitchen waste feeding module 10 and the wet oxidation treatment module 20 respectively. The kitchen waste feeding module 10 is used to add kitchen waste to the wet oxidation treatment module 20, and the wet oxidation treatment module 20 is used to perform wet oxidation treatment on the mixture of sludge and the kitchen waste to produce a treatment product, and the controller 30 is used to control the kitchen waste feeding module 10 and the wet oxidation treatment module 20. Through the above-mentioned sludge treatment device 100, not only sludge can be treated, but also kitchen waste can be coordinated and treated at the same time, thereby alleviating the pressure of kitchen waste treatment. The sludge treatment device 100 provided by the embodiment of the utility model has a wide range of applications.

[0036] For the above-mentioned food waste feeding module 10, please refer to Figure 2 The kitchen waste feeding module 10 includes a storage box 101, a feeding unit 102, a crushing unit 103, a filter plate 104 and a pressing unit 105.

[0037] Among them, the storage box 101 includes a cavity 1011, a first feed port 1012 and a first discharge port 1013, the first feed port 1012 and the first discharge port 1013 are respectively connected to the cavity 1011, the first feed port 1012 is used to add the kitchen waste into the storage box 101, and the first discharge port 1013 is used to connect with the wet oxidation treatment module 20.

[0038] The feeding unit 102 is connected to the first discharge port 1013 , and the feeding unit 102 is used to add the kitchen waste in the storage box 101 into the wet oxidation treatment module 20 .

[0039] It is worth noting that, in some embodiments, the feeding unit 102 includes a pump.

[0040] It should be noted that, in some embodiments, the feeding unit 102 is connected to the controller 30 , so that the controller 30 can control the feeding unit 102 to transport the kitchen waste to the wet oxidation treatment module 20 .

[0041] The crushing unit 103 is used to crush the kitchen waste in the storage box 101. In some embodiments, one end of the crushing unit 103 is disposed in the cavity 1011, and the other end of the crushing unit 103 is connected to the controller 30.

[0042] It is worth noting that, in some embodiments, the crushing unit 103 includes a first driver 1031, a driving rod 1032 and a blade 1033. The first driver 1031 is disposed outside the storage box 101, the first driver 1031 is connected to one end of the driving rod 1032, the other end of the driving rod 1032 is located in the cavity 1011, the other end of the driving rod 1032 is connected to the blade 1033, the blade 1033 is located in the cavity 1011, the first driver 1031 is connected to the controller 30, and the controller 30 is used to control the first driver 1031, thereby driving the driving rod 1032 to rotate.

[0043] In some embodiments, the first driver 1031 includes a motor.

[0044] In some embodiments, the number of the blades 1033 is at least 3. It is understandable that the more the number of the blades 1033 is, the higher the efficiency of crushing the kitchen waste is.

[0045] The filter plate 104 is connected to the storage box 101. The filter plate 104 divides the cavity 1011 into a first space 1011a and a second space 1011b. The filter plate 104 is provided with a filter hole 1041, and the first space 1011a and the second space 1011b are connected through the filter hole 1041. One end of the crushing unit 103 is arranged in the first space 1011a. The first space 1011a is connected to the first feed port 1012, and the second space 1011b is connected to the first discharge port 1013. By setting the filter plate 104, the uncrushed food waste stays in the first space 1011a, and the crushed food waste can enter the second space 1011b through the filter hole 1041 on the filter plate 104. The crushed food waste can enter the second space 1011b, and then enter the wet oxidation treatment module 20 through the first discharge port 1013 for wet oxidation reaction, so the efficiency of the wet oxidation reaction is high.

[0046] It is worth noting that, in some embodiments, the number of the filter holes 1041 is multiple, and the diameter of the filter holes 1041 is smaller than the preset size. In some embodiments, the preset size is 2 mm-5 mm. By controlling the diameter of the filter holes 1041, the particle size of the food waste entering the wet oxidation treatment module 20 can be controlled, thereby controlling the reaction efficiency of the wet oxidation treatment module 20.

[0047] It should be noted that, in some embodiments, the filter plate 104 is fixedly connected to the storage box 101 .

[0048] The pressing unit 105 includes a second driver 1051 and a pressing rod 1052. The second driver 1051 is arranged outside the storage box 101. The second driver 1051 is connected to one end of the pressing rod 1052, and the other end of the pressing rod 1052 is vertically connected to the filter plate 104. The second driver 1051 is connected to the controller 30, and the controller 30 is used to control the second driver 1051, so as to drive the pressing rod 1052 to move back and forth in a direction parallel to the pressing rod 1052. By setting the pressing unit 105, when the pressing rod 1052 moves back and forth in a direction parallel to the pressing rod 1052, the kitchen waste in the storage box 101 is mixed, and then the composition of the kitchen waste entering the wet oxidation treatment module 20 through the first discharge port 1013 is uniform, the reaction efficiency and activity of the wet oxidation treatment module 20 are stable, and the sludge treatment device 100 is not prone to failure and shutdown.

[0049] In some embodiments, the second driver 1051 includes a motor.

[0050] It is worth noting that, in some embodiments, the gap 104a between the filter plate 104 and the storage box 101 is not larger than the diameter of the filter hole 1041, so that the uncrushed kitchen waste is not easy to fall from the gap 104a to the second space. In other words, the kitchen waste entering the second space is only the crushed kitchen waste.

[0051] It is understandable that the structure of the pressing unit 105 is not limited to the above-mentioned form, and other forms may be provided. For example, the pressing unit 105 includes a third driver (not shown), a connecting rod (not shown) and a pressing plate (not shown). The third driver is arranged outside the storage box 101, and the third driver is connected to one end of the connecting rod, and the other end of the connecting rod is vertically connected to the pressing plate; the pressing plate is located in the second space, and the pressing plate is arranged parallel to the filter plate 104. The third driver is connected to the controller 30, and the controller 30 is used to control the third driver, thereby driving the pressing plate to move back and forth in a direction parallel to the connecting rod. Through the above-mentioned structure, the kitchen waste in the storage box 101 can also be mixed, and the composition of the kitchen waste entering the wet oxidation treatment module 20 through the first discharge port 1013 can be uniform, thereby achieving the beneficial effects of stable reaction efficiency and activity of the wet oxidation treatment module 20, and the sludge treatment device 100 is not easy to fail and shut down.

[0052] It is worth noting that, in some embodiments, the kitchen waste feeding module 10 may not include the crushing unit 103, the filter plate 104 and the pressing unit 105, and can also realize the function of the kitchen waste feeding module 10 in the embodiment of the utility model to add kitchen waste to the wet oxidation treatment module 20.

[0053] For the wet oxidation treatment module 20, see Figure 3 In some embodiments, the wet oxidation treatment module includes a wet oxidation reaction unit 201 , a second feed port 202 , a second feed port 203 and a mixing unit 204 .

[0054] The second feed port 202 is used for the kitchen waste in the kitchen waste feeding module 10 to enter the wet oxidation treatment module 20 .

[0055] It is understandable that the second feed port 202 can also be used for the sludge generated after sewage treatment to enter the wet oxidation treatment module 20.

[0056] In some embodiments, the second feed port 202 is connected to the mixing unit 204 , and the second discharge port 203 is connected to the wet oxidation reaction unit 201 .

[0057] In other embodiments, the wet oxidation treatment module 20 does not include the mixing unit 204 , and the second feed port 202 is connected to the wet oxidation reaction unit 201 , and the second discharge port 203 is connected to the wet oxidation reaction unit 201 .

[0058] The wet oxidation reaction unit 201 is used to perform wet oxidation treatment on the mixture of the sludge and the kitchen waste to produce a treatment product, and the second discharge port 203 is used for the treatment product to flow out.

[0059] In some embodiments, the wet oxidation reaction unit 201 includes a wet oxidation reactor 2011, a gas supply tank 2012 and a heat supplier 2013. The gas supply tank 2012 and the heat supplier 2013 are respectively connected to the wet oxidation reactor 2011. The gas supply tank 2012 is used to supply gas to the wet oxidation reactor 2011. The heat supplier 2013 is used to supply heat to the wet oxidation reactor 2011. The wet oxidation reactor 2011 is used to perform wet oxidation treatment on the mixture of sludge and kitchen waste.

[0060] It should be noted that the heat supplier 2013 and the wet oxidation reactor 2011 are respectively connected to the controller 30 and controlled by the controller 30.

[0061] It is worth noting that the process of treating sludge with the wet oxidation reaction unit 201 is an existing technology. After the kitchen waste is added to the wet oxidation reaction unit 201, the existing process can still be used to wet oxidize the mixture of sludge and kitchen waste. In other words, there is no need to add complex equipment. Only by adding a kitchen waste feeding module 10 can the sludge and kitchen waste be synergistically treated. The sludge treatment device 100 provided in the embodiment of the utility model has a wide range of use and low equipment cost.

[0062] In some embodiments, the mixture is subjected to wet oxidation treatment using the wet oxidation reaction unit 201, and the temperature is controlled to be 120° C. to 320° C. and the pressure is controlled to be 0.5 MPa to 20 MPa, so that the high molecular organic matter in the mixture is decomposed into small molecular organic matter. In other embodiments, the mixture is subjected to wet oxidation treatment, and the temperature is controlled to be 220° C. to 240° C. and the pressure is controlled to be 8 MPa, so that the high molecular organic matter in the mixture is decomposed into small molecular organic matter, and the small molecular organic matter can be supplied as a carbon source for the sewage treatment process.

[0063] The mixing unit 204 is used to premix the mixture of sludge and kitchen waste so that the mixture is a homogeneous mixture. The premixed mixture has high reaction efficiency in the subsequent wet oxidation reaction unit 204.

[0064] In some embodiments, the mixing unit 204 includes a mud storage tank 2041, a heat exchanger 2042 and a mixing reactor 2043. The heat exchanger 2042 is connected to the mud storage tank 2041 and the mixing reactor 2043 respectively, and the second feed port 202 is connected to the mud storage tank 2041. The mud storage tank 2041 is used to store sludge and kitchen waste. The mixing reactor 2043 is specifically used to premix the mixture of sludge and kitchen waste so that the mixture is a homogeneous mixture. The heat exchanger 2042 is used to preheat the sludge and kitchen waste in the mud storage tank 2041 when they enter the mixing reactor 2043.

[0065] In some embodiments, the mixing reactor 2043 is connected to the wet oxidation reaction unit 201 , and the mixture of sludge and kitchen waste passing through the mixing reactor 2043 enters the wet oxidation reaction unit 201 .

[0066] It can be understood that, in some embodiments, the mixing reactor 2043 is connected to the wet oxidation reactor 2011 , and the mixture of sludge and kitchen waste passes through the mixing reactor 2043 and enters the wet oxidation reactor 2011 .

[0067] It should be noted that the heat exchanger 2042 and the mixing reactor 2043 are respectively connected to the controller 30 and controlled by the controller 30.

[0068] It is worth noting that, in some embodiments, the wet oxidation treatment module 20 may not include the mixing unit 204, and can still realize the function of the wet oxidation treatment module 20 in the embodiment of the utility model to perform wet oxidation treatment on the mixture of sludge and kitchen waste.

[0069] For the above-mentioned controller 30, the controller 30 is the control center of the embodiment of the utility model. The controller 30 is connected to the food waste feeding module 10 and the wet oxidation treatment module 20 respectively. The controller 30 is used to control the food waste feeding module 10 to add food waste to the wet oxidation treatment module 20. The controller 30 is used to control the wet oxidation treatment module 20 to perform wet oxidation treatment on sludge and food waste.

[0070] It is worth noting that the program steps involved in the controller 30 adopt existing program steps, and the controller 30 also adopts existing processors, such as Intel's I 3 processor, AMD Ryzen processor, etc.

[0071] In the embodiment of the utility model, a kitchen waste feeding module 10, a wet oxidation treatment module 20 and a controller 30 are provided, the kitchen waste feeding module 10 is connected to the wet oxidation treatment module 20, the kitchen waste feeding module 10 and the wet oxidation treatment module 20 are respectively connected to the controller 30, the kitchen waste feeding module 10 is used to add kitchen waste to the wet oxidation treatment module 20, the wet oxidation treatment module 20 is used to perform wet oxidation treatment on a mixture of sludge and kitchen waste to produce a treatment product, the controller 30 is used to control, the sludge treatment device 100 can not only treat sludge, but also simultaneously perform coordinated treatment on kitchen waste, thereby alleviating the pressure of kitchen waste treatment, and the sludge treatment device 100 provided in the embodiment of the utility model has a wide range of applications.

[0072] The present utility model also provides an embodiment of a system 200 for the coordinated treatment and resource utilization of sewage sludge, such as Figure 4 As shown, the system 200 for coordinated treatment and resource utilization of sewage sludge includes the sludge treatment device 100 and a sewage denitrification treatment module 40. The specific structure and function of the sludge treatment device 100 can be found in the above embodiments, and will not be described in detail here.

[0073] The sewage denitrification treatment module 40 is provided with a third feed port 401, a third discharge port 402 and a fourth discharge port 403, wherein the third feed port 401 is used for adding a carbon source, and the sewage denitrification treatment module 40 is used for treating the sewage into dischargeable clean water and producing the sludge by using the carbon source and denitrifying bacteria; the third discharge port 402 is used for discharging the clean water; the fourth discharge port 403 is connected to the second feed port 202, and the fourth discharge port 403 is used for discharging the sludge; the third feed port 401 is connected to the second discharge port 203, and the third feed port 401 is used for the treatment product to flow into the sewage denitrification treatment module 40; the sewage denitrification treatment module 40 is connected to the controller 30, and the controller 30 is used to control the sewage denitrification module.

[0074] It is worth noting that the sewage denitrification treatment module 40 is used to perform a denitrification reaction on the sewage to produce sludge containing high molecular organic matter. Its specific structure can adopt the existing technology and will not be described in detail here.

[0075] Through the above-mentioned system 200 for coordinated treatment and resource utilization of sewage sludge, the sludge generated by sewage treatment enters the sludge treatment device 100, forms a mixture with kitchen waste and is treated by the wet oxidation treatment module 20, and the generated treatment product can be reused in the sewage denitrification treatment module 40 of the sewage treatment system as a carbon source, which not only saves the use of carbon source in the sewage denitrification treatment module 40, but also can efficiently treat kitchen waste, which is not only economical but also environmentally friendly.

[0076] It should be noted that the preferred embodiments of the utility model are given in the specification and drawings of the utility model, but the utility model can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional restrictions on the content of the utility model. The purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the utility model; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the utility model.

Claims

1. A sludge treatment device, characterized in that: include: A kitchen waste feeding module, comprising a storage box and a feeding unit, wherein the storage box comprises a cavity, a first feeding port and a first discharging port, wherein the first feeding port and the first discharging port are respectively connected to the cavity, the first feeding port is used to add kitchen waste to the storage box, and the first discharging port is connected to the feeding unit; A wet oxidation treatment module, comprising a wet oxidation reaction unit, wherein the wet oxidation treatment module is provided with a second feed inlet and a second discharge outlet, wherein the second feed inlet is used to add the sludge into the wet oxidation reaction unit, the second feed inlet is connected with the feeding unit, the feeding unit is used to add the kitchen waste in the storage box into the wet oxidation reaction unit, the wet oxidation reaction unit is used to perform wet oxidation treatment on the mixture of the sludge and the kitchen waste to produce a treatment product, and the second discharge outlet is used for the treatment product to flow out; The controller is connected to the kitchen waste feeding module and the wet oxidation treatment module respectively.

2. The sludge treatment device according to claim 1, characterized in that: The kitchen waste feeding module further includes a crushing unit, one end of which is arranged in the cavity, and the other end of which is connected to the controller.

3. The sludge treatment device according to claim 2, characterized in that: The pulverizing unit includes a first driver, a driving rod and a blade; The first driver is arranged outside the storage box, the first driver is connected to one end of the driving rod, the other end of the driving rod is located in the cavity, the other end of the driving rod is connected to the blade, and the blade is located in the cavity. The first driver is connected to the controller, and the controller is used to control the first driver, thereby driving the driving rod to rotate.

4. The sludge treatment device according to any one of claims 2-3, characterized in that: The kitchen waste feeding module further comprises a filter plate, and the filter plate is connected to the storage box; The filter plate divides the cavity into a first space and a second space, and the filter plate is provided with filter holes, and the first space and the second space are connected through the filter holes; One end of the crushing unit is disposed in the first space; The first space is communicated with the first feed port, and the second space is communicated with the first discharge port.

5. The sludge treatment device according to claim 4, characterized in that: The kitchen waste feeding module also includes a material pressing unit; The pressing unit comprises a second driver and a pressing rod, wherein the second driver is arranged outside the material storage box, the second driver is connected to one end of the pressing rod, and the other end of the pressing rod is vertically connected to the filter plate; The second driver is connected to the controller, and the controller is used to control the second driver, thereby driving the pressing rod to move back and forth in a direction parallel to the pressing rod.

6. The sludge treatment device according to claim 5, characterized in that: The gap between the filter plate and the storage box is no greater than the diameter of the filter hole.

7. The sludge treatment device according to claim 4, characterized in that: The kitchen waste feeding module also includes a material pressing unit; The pressing unit includes a third driver, a connecting rod and a pressing plate, wherein the third driver is arranged outside the material storage box, the third driver is connected to one end of the connecting rod, and the other end of the connecting rod is vertically connected to the pressing plate; the pressing plate is located in the second space, the pressing plate is arranged parallel to the filter plate, and the third driver is connected to the controller, and the controller is used to control the third driver, thereby driving the pressing plate to move back and forth in a direction parallel to the connecting rod.

8. The sludge treatment device according to claim 1, characterized in that: The charging unit comprises a pump.

9. The sludge treatment device according to any one of claims 1 to 3, characterized in that: The wet oxidation treatment module further comprises a mixing unit, the second feed port is connected to the mixing unit, and the mixing unit is used to pre-mix the mixture of sludge and kitchen waste; The mixing unit includes a mud storage box, a heat exchanger and a mixing reactor; the heat exchanger is connected to the mud storage box and the mixing reactor respectively, and the second feed port is connected to the mud storage box. The mud storage box is used to store sludge and kitchen waste. The mixing reactor is specifically used to premix the mixture of sludge and kitchen waste so that the mixture is a homogeneous mixture. The heat exchanger is used to preheat the sludge and kitchen waste in the mud storage box when they enter the mixing reactor.

10. A system for coordinated treatment and resource utilization of sewage sludge, characterized in that: It comprises a sludge treatment device and a sewage denitrification treatment module as described in any one of claims 1 to 9; The sewage denitrification treatment module is provided with a third feed inlet, a third discharge inlet and a fourth discharge inlet, the third feed inlet is used to add a carbon source, and the sewage denitrification treatment module is used to use the carbon source and denitrifying bacteria to treat the sewage into dischargeable clean water and produce the sludge; The third discharge port is used for discharging the clean water; The fourth discharge port is connected to the second feed port, and the fourth discharge port is used for discharging the sludge; The third feed port is connected to the second feed port, and the third feed port is used for the treatment product to flow into the sewage denitrification treatment module; The sewage denitrification treatment module is connected to the controller.

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