Self-adaptive waste slurry curing and compressing device and operation method

Abstract

The invention relates to a self-adaptive waste mud solidification and compression device and an operation method. The self-adaptive waste mud solidification and compression device comprises a primary dehydration assembly, a secondary dehydration assembly, a solidification and compression assembly and a collection assembly. The primary dehydration assembly is used for diluting the waste slurry slag with water, adding a flocculating agent and stirring to obtain initial slurry, and carrying out primary dehydration treatment on the initial slurry to obtain first slurry; a secondary dehydration assembly receives the first slurry, and a curing agent is added into the first slurry for stirring to obtain second slurry; the solidifying and compressing assembly is used for solidifying and compressing the second slurry to obtain a mud cake and transferring the produced mud cake to the collecting assembly; according to the system, a sensor network is adopted, through precise control over the adding amount of the curing agent and the design of the multi-cavity type storage bin, the automation level of slurry curing and utilization is effectively improved, and the resource utilization rate of waste slurry is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of waste mud recovery and treatment, and in particular relates to an adaptive waste mud solidification and compression device and an operation method. Background Art

[0002] The field of mud solidification technology is an important field developed for the treatment of mud with high water content. This mud may come from multiple industries, including sewage treatment, mineral mining, industrial production, etc., and may cause environmental pollution. The problem of handling engineering waste mud generated by current construction operations is relatively serious. In traditional manual operations, a large amount of manpower is usually required, and repetitive labor is required, which easily leads to worker fatigue and mistakes. Due to the limitations of manual operation, production efficiency may be limited, and continuous and efficient production cannot be achieved. At the same time, manual operation makes it difficult to monitor the production process in real time, and the adjustment process requires a lot of time and energy, and it is impossible to respond to changes in the production environment in a timely manner. Summary of the invention

[0003] In order to overcome the problems existing in the prior art, the present invention provides an adaptive waste mud solidification and compression device and an operating method.

[0004] An adaptive waste mud solidification and compression device comprises a primary dehydration component, a secondary dehydration component, a solidification and compression component and a collection component;

[0005] The primary dehydration component is used to dilute the waste mud residue with water, add a flocculant to stir, obtain initial mud, and perform a primary dehydration treatment on the initial mud to obtain the first mud;

[0006] The secondary dehydration component receives the first mud, and adds a curing agent to the first mud and stirs it to obtain a second mud;

[0007] The solidification and compression component solidifies and compresses the second mud to obtain a mud cake, and transfers the produced mud cake to a collection component;

[0008] The collecting component detects and screens the received mud cake for subsequent use.

[0009] According to the aspects described above and any possible implementation, there is further provided an implementation, wherein the primary dehydration component is a filter press.

[0010] According to the above aspects and any possible implementation, there is further provided an implementation, wherein the secondary dehydration component is a mixing cylinder disposed on one side of the filter press.

[0011] According to the above aspects and any possible implementation manner, an implementation manner is further provided, wherein a stirring rod is disposed in the mixing cylinder and a fixed wall is disposed around the stirring rod.

[0012] According to the above aspects and any possible implementation, an implementation is further provided, in which a plurality of curing agent feeders are arranged on a fixed wall above the mixing cylinder.

[0013] According to the aspects described above and any possible implementation, there is further provided an implementation, wherein the curing and compression assembly is a plurality of centrifugal compressors connected to the mixing cylinder via a feed pipe.

[0014] According to the aspects described above and any possible implementation, there is further provided an implementation, wherein the collecting component is a storage bin, and the storage bin is disposed at the lower portion of the centrifugal compressor and is provided with a discharge port.

[0015] According to the aspects described above and any possible implementation, an implementation is further provided, wherein each of the centrifugal compressors includes a cylinder and an internal hydraulic plate and a rotary transformer, holes are provided on the cylinder wall, and a water filter membrane is provided on the inner side of the cylinder wall.

[0016] According to the above aspects and any possible implementations, there is further provided an implementation, wherein the waste mud residue includes waste brick aggregates, waste aerated building blocks and / or construction waste.

[0017] The present invention also discloses an operating method of an adaptive waste mud solidification and compression device, which is implemented by using the device, and comprises: step 1: in a preparation stage, the waste mud residue to be processed is transported to a designated operation site;

[0018] Step 2: Initial mud preparation and primary dehydration: The waste mud is put into the filter press as the primary dehydration component, and a flocculant is added for stirring to obtain the initial mud, and the initial mud is subjected to a primary dehydration treatment to obtain the first mud, which is then transferred to the mixing drum as the primary dehydration component;

[0019] Step 3: Secondary dehydration and curing agent adjustment: The mixing drum receives the first mud, drives the curing agent feeder to add the curing agent into the first mud and stirs it to obtain the second mud;

[0020] Step 4: Centrifugal dehydration and solidification: The feed pipe transfers the second mud to each centrifugal compressor. The centrifugal compressor rotates to generate centrifugal force to throw out the water in the second mud, completing the final dehydration and solidification of the mud, and then compressing it to form a mud cake;

[0021] Step 5: The mud cake is put into the collection assembly for testing and screening for subsequent use.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The adaptive waste mud solidification and compression device of the present invention comprises a primary dehydration component, a secondary dehydration component, a solidification and compression component and a collection component; the primary dehydration component is used to dilute the waste mud residue with water, add a flocculant to stir it, obtain an initial mud, and perform a primary dehydration treatment on the initial mud to obtain a first mud; the secondary dehydration component receives the first mud, and adds a solidifying agent to the first mud for stirring to obtain a second mud; the solidification and compression component solidifies and compresses the second mud to obtain a mud cake, and transfers the produced mud cake to the collection component; the collection component detects and screens the received mud cake for subsequent use. The present invention has the following beneficial effects: (1) The present invention adopts a sensor network to realize real-time monitoring and analysis of various key data of the mud, automatically and accurately adjusts the amount of the solidifying agent added, and significantly improves the stability of the solidification process;

[0024] (2) The present invention effectively avoids excessive use of curing agent by accurately controlling the amount of curing agent added, reduces curing costs, reduces environmental pollution problems that may be caused by excessive use of curing agent, and achieves economic benefits and environmental protection effects;

[0025] (3) The present invention adopts a multi-chamber storage silo design. Compared with the traditional storage silo, it has the ability to store mud cakes of different properties, thereby enhancing the classification storage capacity of the storage silo. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the device structure of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the centrifugal compressor of the present invention;

[0028] Figure 3 This is the distribution diagram of the water filtration membrane of the present invention;

[0029] Figure 4 It is a microscopic schematic diagram of the water filtration membrane of the present invention;

[0030] Figure 5 Schematic diagram of the control platform of the present invention. DETAILED DESCRIPTION

[0031] In order to better understand the technical solution of the present invention, the content of the present invention includes but is not limited to the specific implementation methods described below, and similar technologies and methods should be considered to be within the scope of protection of the present invention. In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0032] It should be clear that the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0034] The present invention provides an adaptive waste mud solidification and compression device, comprising a primary dehydration component, a secondary dehydration component, a solidification and compression component and a collection component;

[0035] The primary dehydration component is used to dilute the waste mud residue with water, add a flocculant to stir, obtain initial mud, and perform a primary dehydration treatment on the initial mud to obtain the first mud;

[0036] The secondary dehydration component receives the first mud, and adds a curing agent to the first mud and stirs it to obtain a second mud;

[0037] The solidification and compression component solidifies and compresses the second mud to obtain a mud cake, and transfers the produced mud cake to a collection component;

[0038] The collecting component detects and screens the received mud cake for subsequent use. Figure 1As shown in the figure, the primary dehydration component is a filter press 1; the secondary dehydration component is a mixing drum 3 arranged on one side of the filter press 1, a stirring rod 4 is arranged in the mixing drum 3, and a fixed wall is arranged around it. Four curing agent feeders 2 are connected to the fixed wall and above the mixing drum 3, which can respectively accommodate cement curing agent, quicklime curing agent, organic curing agent polyacrylamide (PAM) and sodium sulfate additive; for a large amount of mud mainly composed of clay, ordinary silicate cement can react physically and chemically with clay particles, and the products such as calcium hydroxide produced by cement hydration can react with components such as silicate in clay to form a cementitious substance to cement the clay particles together. The amount of cement curing agent added in the mud is 10%-30% of the slurry mass, so that the mud is transformed from a fluid state to a solid state with a certain strength, which is convenient for subsequent transportation and disposal; for mud containing heavy metal ions, quicklime curing agent is used for curing. The quicklime in the curing agent reacts with water to form calcium hydroxide, which increases the pH value of the mud. In a high pH environment, many heavy metal ions form hydroxide precipitations, such as lead hydroxide and zinc hydroxide. At the same time, calcium hydroxide can also condense with other components in the mud; for mud with strong acidity and high heavy metal content, the addition amount of quicklime curing agent reaches about 20% of the mud mass, which can not only neutralize the acidity, but also solidify the mud and fix heavy metal ions, reducing its pollution to the environment. For mud containing a large amount of organic matter, especially for mud containing a large amount of silt, since the silt particles are fine and have a large specific surface area, cement curing agents are still applicable. They can combine well with the silt particles to fill the gaps between the silt particles during the curing process, and their hydration products can react with the substances on the surface of the silt. The added amount can be about 15%-30% of the mud mass. The solidified mud can form a relatively stable structure. For mud containing a higher concentration of salt, such as sodium chloride, magnesium chloride, etc., it can be cured by adding an organic curing agent polyacrylamide (PAM). Polyacrylamide (PAM) has relatively good tolerance to salt and can aggregate particles in mud through adsorption and bridging. The amount added is about 0.1%-0.5% of the mud mass. After solidification with PAM, the mud can form aggregates with a certain strength, which is convenient for subsequent cleaning and disposal. At the same time, the curing effect will not be seriously affected by the presence of salt. In some engineering sites where mud treatment is urgently needed, a composite curing agent composed of cement, lime and a small amount of sodium sulfate additive can be used at the same time. Sodium sulfate can promote the hydration reaction of cement, thereby improving the early strength of the curing agent.This composite curing agent combines the advantages of cement and lime, can cure mud faster and more effectively, and reduce the impact on the construction site. The content of sodium sulfate in the composite curing agent is generally 1%-3% of the mass of cement. Therefore, the above four curing agent feeders 2 can select one or more curing agent feeders 2 to start feeding different types of curing agents individually or jointly according to the properties of the material to be treated in the mixing barrel 3. The curing compression assembly is a plurality of centrifugal compressors 6. Four centrifugal compressors 6 are used in the present invention. The filter press 1 is welded above the centrifugal compressor 6, and the lower part of the mixing barrel 3 is connected to a sucking feed pipe 5. The sucking feed pipe 5 is connected to four centrifugal compressors 6 through a pipeline, and can process muds of different properties at the same time, which improves the time utilization rate, and each compressor can be maintained in turn. When a centrifugal compressor fails and needs to be repaired, the configuration of four centrifugal compressors also provides more time and flexibility for maintenance personnel. The collecting component is a multi-chamber storage bin 8, which is welded to the bottom of the centrifugal compressor 6. The interior of the multi-chamber storage bin 8 is divided into at least four independent chambers, each chamber is connected to a centrifugal compressor, and each chamber is physically separated by a stainless steel partition to ensure that the materials will not be damaged by squeezing, friction or corrosion during the storage process, thereby ensuring the independence of the chambers. A discharge port 9 is welded on the lower outer side of the multi-chamber storage bin 8.

[0039] The device of the present invention is also provided with a control platform 10, and the control platform 10 is provided with a start button 10-1, a stop button 10-2, a density adjustment module 10-3, a soil particle density adjustment module 10-4, and a water content adjustment module 10-5, wherein the density adjustment module 10-3 and the water content adjustment module 10-5 are connected to each centrifugal compressor 6 to control the pressure and speed of the centrifugal compressor 6 to achieve control of the density and water content of the mud cake, and the soil particle density adjustment module 10-4 is connected to each curing agent feeder 2 to control the density of the soil particles of the generated mud cake by adjusting the type and addition amount of the curing agent and additives.

[0040] Furthermore, the mud residue comprises waste brick aggregates, waste aerated building blocks and / or construction waste generated by a regenerated sand-making dust collector.

[0041] Furthermore, the curing agent includes a cement curing agent, a quicklime curing agent, a sodium sulfate additive and an organic curing agent polyacrylamide (PAM), so as to carry out targeted treatment on muds of different properties.

[0042] Furthermore, the suckable material delivery pipe 5 in the device is controlled by a motor to rotate at high speed and is placed inside the mixing barrel 3 where the suckable material delivery pipe 5 is connected.

[0043] Furthermore, the centrifugal compressor 6 is a rotatable stainless steel cylinder with a number of holes evenly distributed on its side. A water filter membrane 7 is arranged on the inside of the cylinder. A column 6-2 is arranged above the cylinder. The column 6-2 has a built-in hydraulic plate 6-1, which can slide up and down along the column to compress the mud. A rotary transformer 6-3 is arranged at the bottom of the cylinder, and the water in the mud is thrown out through the water filter membrane 7 by rotation.

[0044] Furthermore, the water filtration membrane is a high-strength film 7 with excellent water permeability and mud barrier ability. The water filtration membrane 7 surrounds the inner side of the centrifugal compressor 6 and can fully isolate mud molecules and pass water molecules.

[0045] Furthermore, a glass protective cover is configured on the outside of the centrifugal compressor 6 to prevent the moisture thrown out during the operation of the centrifugal compressor 6 from affecting the on-site environment. A drain port is installed on the side wall by welding, which can discharge the collected water to a designated location to avoid moisture accumulation on site, ensure the dryness and safety of the on-site environment, and ensure the stable operation of the entire device.

[0046] The first sensor 11 is placed on the outside of the curing agent feeder 2, and transmits the data such as the composition and current curing state of the mud collected in the mixing drum 3 to the control platform 10, and adjusts the curing agent feeder 2 to add the corresponding curing agent through the control platform 10. The second sensor 12 is placed above the centrifugal compressor 6, and transmits the data such as the density and water content of the mud collected in the centrifugal compressor 6 to the control platform 10, and the pressure and speed of the centrifugal compressor 6 are controlled by the control platform 10. The third sensor 13 is placed on the side of the multi-chamber aggregate bin 8, and transmits the real-time state of the collected mud cake to the control platform 10. The control platform 10 issues instructions based on this data to control the multi-chamber aggregate bin 8 to collect and use the mud cake.

[0047] As an embodiment disclosed by the present invention, the present invention also provides an operating method of an adaptive waste mud solidification and compression device, the method is implemented by the device, and comprises: step 1: in a preparation stage, the waste mud residue to be processed is transported to a designated operation site;

[0048] Step 2: Initial mud preparation and primary dehydration: The waste mud is put into the filter press as the primary dehydration component, and a flocculant is added for stirring to obtain the initial mud, and the initial mud is subjected to a primary dehydration treatment to obtain the first mud, which is then transferred to the mixing drum as the primary dehydration component;

[0049] Step 3: Secondary dehydration and curing agent adjustment: The mixing drum receives the first mud, drives the curing agent feeder to add the curing agent into the first mud and stirs it to obtain the second mud;

[0050] Step 4: Centrifugal dehydration and solidification: The feed pipe transfers the second mud to each centrifugal compressor. The centrifugal compressor rotates to generate centrifugal force to throw out the water in the second mud, completing the final dehydration and solidification of the mud, and then compressing it to form a mud cake;

[0051] Step 5: The mud cake is put into the collection assembly for testing and screening for subsequent use.

[0052] Specifically, the operating process and principle of the device of the present invention are as follows:

[0053] Step 1: Start the device by pressing the button 10-1 on the control platform, set various values ​​of the output mud cake through the density adjustment module 10-3, the soil particle density adjustment module 10-4, and the water content adjustment module 10-5, then put the waste mud to be treated into the filter press 1, add water and flocculant and stir, perform a dehydration, remove most of the free water in the mud, make the mud initially solidified, and obtain the first mud;

[0054] Step 2: The first mud is transferred to the mixing drum 3 for secondary dehydration. During the dehydration process, the first sensor 11 transmits the solidification characteristics of the waste mud and the real-time feedback data during the compression process to the control platform 10. As a device for receiving feedback data, the control platform 10 analyzes and processes these data, and judges the type of curing agent and the accurate addition amount required for the current waste mud according to the corresponding relationship between the solidification characteristics of different waste muds and the corresponding optimal curing agent types and addition amounts pre-set in the database pre-stored therein, combined with the real-time feedback data of the first sensor 11, and then sends a corresponding start signal to the curing agent feeder 2 to control the curing agent feeder 2 to adjust the type and addition amount of the curing agent. At the same time, the control platform 10 determines the preset mixing time according to the selected curing agent type and the real-time state of the mud, so as to ensure that within this time, the curing agent and the mud and other additives can be fully mixed and uniform, so as to obtain a second mud with stable properties and meeting the requirements. Changes in the feedback data may cause the control platform 10 to adjust the preset time to adapt to changes in the mud solidification conditions;

[0055] Step 3: The second mud is transferred from the mixing drum 3 to the centrifugal compressor 6 through the suckable feed pipe 5. The centrifugal compressor 6 provides centrifugal force through the high-speed rotation of the rotary transformer 6-3, so that the water in the second mud is thrown out through the water filter membrane 7. The water filter membrane 7 shows good water permeability to water molecules 7-1, so that the water in the second mud is thrown out, and shows extremely high barrier properties to mud molecules 7-2, retaining the mud therein. After solidification, it is compressed by the hydraulic plate 6-1 to obtain a mud cake, and the prepared mud cake is put into the multi-chamber collecting bin 8. When it is needed, the mud cake is taken out from the multi-chamber collecting bin 8 through the discharge port 9. The control platform 10 analyzes the data feedback of the first sensor 11 and issues instructions to the curing agent feeder 2 to add the curing agent, and controls the pressure and speed of the centrifugal compressor 6 through the data feedback of the second sensor 12. The multi-chamber storage bin 8 is used to monitor and take the mud cake in real time.

[0056] The present invention has a simple structure and can facilitate real-time feedback and dynamic adjustment of the mud cake preparation process. It can monitor the key parameters of the waste mud in the solidification and compression process in real time at the key processing link, including but not limited to the density, water content, pressure change, composition change and current solidification state of the mud. The data acquired by the sensor is immediately transmitted to the control platform 10, which performs rapid analysis based on the received real-time data and adjusts the speed of the centrifugal compressor and the feeding amount and type of the curing agent feeding device accordingly. The automatic optimization and adjustment mechanism of each processing link based on real-time feedback data realizes an adaptive waste mud solidification and compression process, significantly improves the green recycling and resource utilization of abandoned building concrete materials, and has application prospects.

[0057] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not depart from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. An adaptive waste mud solidification and compression device, characterized in that: It includes a primary dehydration component, a secondary dehydration component, a solidification compression component and a collection component; The primary dehydration component is used to dilute the waste mud residue with water, add a flocculant to stir, obtain initial mud, and perform a primary dehydration treatment on the initial mud to obtain the first mud; The secondary dehydration component receives the first mud, and adds a curing agent to the first mud and stirs it to obtain a second mud; The solidification and compression component solidifies and compresses the second mud to obtain a mud cake, and transfers the produced mud cake to a collection component; The collecting component detects and screens the received mud cake for subsequent use.

2. The adaptive waste mud solidification and compression device according to claim 1 is characterized in that: The primary dehydration component is a filter press.

3. The adaptive waste mud solidification and compression device according to claim 1 or 2, characterized in that: The secondary dehydration component is a mixing cylinder arranged on one side of the filter press.

4. The adaptive waste mud solidification and compression device according to claim 3 is characterized in that: The mixing cylinder is provided with a stirring rod, and a fixed wall is provided around the stirring rod.

5. The adaptive waste mud solidification and compression device according to claim 4 is characterized in that: A plurality of curing agent feeders are arranged on the fixed wall above the mixing cylinder.

6. The adaptive waste mud solidification and compression device according to claim 4 is characterized in that: The curing compression components are a plurality of centrifugal compressors connected to the mixing cylinder via a feed pipe.

7. The adaptive waste mud solidification and compression device according to claim 6, characterized in that: The collecting component is a storage bin, which is arranged at the lower part of the centrifugal compressor and has a discharge port.

8. The adaptive waste mud solidification and compression device according to claim 6, characterized in that: Each of the centrifugal compressors comprises a cylinder, a hydraulic plate and a rotary transformer inside the cylinder, holes are arranged on the cylinder wall, and a water filter membrane is arranged on the inner side of the cylinder wall.

9. The adaptive waste mud solidification and compression device according to claim 1, characterized in that: The waste mud residue includes waste brick aggregates, waste aerated building blocks and / or construction waste.

10. An operating method of an adaptive waste mud solidification and compression device, the method is implemented by using the device according to any one of claims 1 to 9, characterized in that: It includes: Step 1: In the preparation stage, the waste mud residue to be treated is transported to the designated operation site; Step 2: Initial mud preparation and primary dehydration: The waste mud is put into the filter press as the primary dehydration component, and a flocculant is added for stirring to obtain the initial mud, and the initial mud is subjected to a primary dehydration treatment to obtain the first mud, which is then transferred to the mixing drum as the primary dehydration component; Step 3: Secondary dehydration and curing agent adjustment: The mixing drum receives the first mud, drives the curing agent feeder to add the curing agent into the first mud and stirs it to obtain the second mud; Step 4: Centrifugal dehydration and solidification: The feed pipe transfers the second mud to each centrifugal compressor. The centrifugal compressor rotates to generate centrifugal force to throw out the water in the second mud, completing the final dehydration and solidification of the mud, and then compressing it to form a mud cake; Step 5: The mud cake is put into the collection assembly for testing and screening for subsequent use.

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