A seafront black and odorous silt clay extraction and additive integrated device

Abstract

The application provides a coastal black and odorous mucky clay extraction and additive integrated device, belonging to the technical field of black and odorous mucky clay, and comprising: a tubular shell, a rotating shaft arranged on the central axis of the tubular shell, the top end of the rotating shaft being rotated by a motor or a transmission mechanism, a continuous spiral support plate being arranged around the rotating shaft, the top end of the spiral support plate being flush with the top end of the rotating shaft, the bottom end of the spiral support plate being flush with the bottom end of the rotating shaft, the outer diameter of the spiral support plate being smaller than the inner diameter of the tubular shell, the internal space of the tubular shell being divided into multiple subspaces by the spiral support plate, multiple additive holes being formed in each subspace, an additive structure being arranged on the additive hole, a pressure gauge being attached to the material baffle, the output end of an electric pump being connected with a liquid outlet hole through the additive hole, and a liquid inlet hole being arranged on the input end of the electric pump; the pressure gauge is electrically connected with an upper computer, an additive speed control module is arranged in the upper computer, and the corresponding electric pump is controlled.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of black and odorous silt clay, and in particular, relates to a seafront black and odorous silt clay extraction and additive adding integrated device. BACKGROUND

[0002] Black and odorous silt refers to a kind of sediment rich in organic matter and heavy metals, which usually appears at the bottom of water bodies such as lakes and rivers. Due to the existence of anoxic and reducing environment, it will produce foul-smelling gas, causing serious pollution to the surrounding environment and residents' life. The treatment of black and odorous silt has always been a major challenge in the field of environmental protection, and the most critical one is how to safely and effectively extract it from the water body and conduct standardized follow-up treatment.

[0003] At present, the extraction of black and odorous silt mainly has the following several common methods: mechanical excavation method, suction method and underwater dredging machine, etc. The mechanical excavation method directly excavates the black and odorous silt from the bottom of the water body by using large mechanical equipment, but this method is complex to operate, low in efficiency, and will cause certain damage to the water body ecology. The suction method uses a high-power mud suction pump to suck the silt from the water bottom to the shore for transportation and storage, which is relatively simple to operate, but due to the mixing of a large amount of water, it will lead to complex dehydration and solidification treatment process. The underwater dredging machine is a new type of dredging equipment proposed in recent years, which can realize harmless treatment in water by directly cutting, stirring and attracting the silt under water, but the equipment manufacturing cost is high, and the underwater operation environment is complex, which is difficult to operate. In addition to the problems existing in the extraction process itself, the follow-up treatment of the extracted black and odorous silt is also a great challenge. Since the black and odorous silt often contains a large amount of organic matter, heavy metals and other pollutants, direct landfill or stacking is obviously not desirable, and scientific and reasonable treatment methods must be taken to reduce its harm to the environment. Common treatment methods include dehydration and solidification, pyrolysis treatment, biodegradation, etc., but these processes often require a large amount of chemical reagent addition, and the operation process is complicated and costly.

[0004] In the actual treatment process of black and odorous silt clay, the extracted black and odorous silt clay needs to be treated with additives. The additive adding process requires stirring of the black and odorous silt clay, which often requires a large amount of stirring work and is difficult to stir uniformly, affecting the subsequent treatment. SUMMARY

[0005] Therefore, the present application provides a seafront black and odorous silt clay extraction and additive adding integrated device, which can solve the technical problem that in the actual treatment process of black and odorous silt clay, the extracted black and odorous silt clay needs to be treated with additives, the additive adding process requires stirring of the black and odorous silt clay, which often requires a large amount of stirring work and is difficult to stir uniformly, affecting the subsequent treatment.

[0006] The present application is achieved in this way:

[0007] The first aspect of the present application provides a seafront black and odorous sludge clay extraction and agent integrated device, wherein, there is a tubular shell, a rotating shaft is arranged on the axis of the tubular shell, the top end of the rotating shaft is rotated by a motor or a transmission mechanism, a continuous spiral support plate is arranged around the rotating shaft, the top end of the spiral support plate is flush with the top end of the rotating shaft, the bottom end of the spiral support plate is flush with the bottom end of the rotating shaft, the outer diameter of the spiral support plate is smaller than the inner diameter of the tubular shell, the spiral support plate divides the internal space of the tubular shell into multiple subspaces, multiple agent holes are arranged on each subspace, an agent structure is arranged on the agent hole, the agent structure is used for adding different types of fluid reagents, the agent structure includes an electric pump, a liquid inlet hole, a liquid outlet hole, a material blocking plate and a pressure gauge, the material blocking plate is fixedly arranged on the inner wall of the tubular shell, the material blocking plate and the inner wall of the tubular shell form a triangular structure, the inclined surface of the triangular structure is the material blocking plate, the pressure gauge is attached to the material blocking plate, the inclined surface of the triangular structure is located below the entire triangular structure, the liquid outlet hole is arranged above the triangular structure, the output end of the electric pump is connected with the liquid outlet hole through the agent hole, and the input end of the electric pump is provided with the liquid inlet hole; the pressure gauge is electrically connected with an upper computer, the upper computer is provided with an agent speed control module, which is used for calculating the power of the corresponding electric pump according to the pressure values collected by multiple pressure gauges and controlling the corresponding electric pump.

[0008] The material of the tubular shell is corrosion-resistant stainless steel, which has good anti-leakage performance; the rotating shaft is made of high-strength alloy material and can withstand large mechanical load; the pitch and spiral angle of the spiral support plate can be adjusted and optimized according to the characteristics of different black and odorous sludge materials; the diameter and hole spacing of the agent hole can also be flexibly adjusted according to actual needs; the measurement range of the pressure gauge is 0-1 MPa, and the measurement accuracy is ±0.5%; the rated power of the rotating shaft motor is not less than 10 kW, and the rotating speed range is 10-50 rpm; the rated flow range of the electric pump is 1-10 m 3 / h, and the lift is not less than 10 m; the inner diameter and height of the shell are 1.2 m and 3 m respectively, which can meet the operation demand of daily processing capacity of 100-500 tons; the upper computer adopts an industrial embedded controller, which has good anti-interference performance and reliability; the device is also provided with an automatic cleaning system, which can periodically clean and maintain the internal pipeline and equipment components; the device is also provided with an automatic material conveying device, which can directly convey the treated black and odorous sludge to the subsequent solidification or transportation link; the device is also provided with an automatic material feeding system, which can automatically adjust the dosing amount of various reagents according to the processing capacity.

[0009] Based on the above technical solutions, the sea-adjacent black and odorous silt clay extraction and additive integrated device can be further improved as follows:

[0010] The additive speed control module is configured to perform the following steps:

[0011] S10, acquiring pressure value data collected by the plurality of pressure gauges;

[0012] S20, calculating the extraction rate of the black and odorous silt clay corresponding to the pressure value data;

[0013] S30, calculating the weight of the black and odorous silt clay being extracted according to the power information of the shaft motor;

[0014] S40, further calculating the weight of the black and odorous silt clay actually extracted in combination with the inner diameter and height information of the tubular shell;

[0015] S50, calculating the addition amount of various fluid reagents according to the addition proportion of different reagents;

[0016] S60, controlling the working power of the corresponding electric pump according to the calculated addition amount of various fluid reagents to realize speed control of the additive;

[0017] S70, continuously monitoring the pressure value data and the motor power information, and dynamically adjusting the addition speed of various fluid reagents to ensure the stability of the extraction and additive processes.

[0018] Further, the step S10 specifically includes:

[0019] Step S10-1, traversing each subspace inside the tubular shell, and sequentially reading real-time pressure value data collected by the pressure gauges in each subspace;

[0020] Step S10-2, storing the pressure value data of each subspace read in the database of the upper computer for subsequent analysis and calculation;

[0021] Step S10-3, ensuring that the pressure value data of all subspaces have been successfully collected and stored in the database.

[0022] Further, the step S20 specifically includes:

[0023] Step S20-1, traversing adjacent subspaces inside the tubular shell, and calculating the pressure difference ΔP between each two adjacent subspaces;

[0024] Step S20-2, the calculated pressure difference ΔP is substituted into the formula V=k1×ΔP, where V represents the extraction flow rate of the black and odorous sludge clay, k1 is a coefficient related to the shell structure parameters and material characteristics, and the extraction flow rate V of each subspace is calculated;

[0025] Step S20-3, the calculated extraction flow rate V of each subspace is arithmetically averaged to obtain the overall black and odorous sludge clay extraction rate.

[0026] Further, the step S30 specifically includes:

[0027] Step S30-1, reading the real-time power parameter P of the rotating shaft motor m ;

[0028] Step S30-2, substituting P m , the extraction flow rate V calculated in step S20 into the formula M=k2×P m / V, where M represents the weight of the black and odorous sludge clay being extracted, k2 is a coefficient related to the density of the black and odorous sludge clay, shell structure and other parameters, and the weight M of the black and odorous sludge clay being currently extracted is calculated;

[0029] Step S30-3, storing the calculated weight M of the black and odorous sludge clay in the database of the upper computer for subsequent steps.

[0030] Further, the step S40 specifically includes:

[0031] Step S40-1, reading the inner diameter r and height h parameters of the tubular shell;

[0032] Step S40-2, substituting r and h into the formula V c =π×r 2 ×h, to calculate the total volume V c inside the shell;

[0033] Step S40-3, substituting the known density ρ of the black and odorous sludge clay into the formula M c =ρ×V c , to calculate the weight M c of the black and odorous sludge clay calculated according to the geometric size of the shell;

[0034] Step S40-4, comparing and analyzing the two black and odorous sludge clay weight values calculated in steps S30 and S40 as a reference basis for subsequent additive control.

[0035] Further, the step S50 specifically includes:

[0036] Step S50-1, according to the weight M of the black and odorous sludge clay obtained in steps S30 and S40, respectively, the formula M r1 = k r1 × M, M r2 = k r2 × M, M r3 = k r3 × M, wherein M r1 , M r2 , M r3 respectively represent the weight of three types of fluid reagents that need to be added, k r1 , k r2 , k r3 are the addition ratio coefficients of the corresponding reagents, and the addition weights of the three fluid reagents are calculated;

[0037] Step S50-2, store the calculated addition weights of the three reagents in the database of the upper computer for subsequent steps;

[0038] Step S50-3, if it is necessary to adjust the addition ratio of the reagents, the values of the three coefficients k r1 , k r2 , k r3 may be modified accordingly.

[0039] Further, the step S60 specifically comprises:

[0040] Step S60-1, iterate the addition weights M r1 , M r2 , M r3 of the three fluid reagents calculated in step S50;

[0041] Step S60-2, for each reagent, according to its target addition time t, substitute the formula P p = k3× M r / t to calculate the required working power P p of the corresponding electric pump, wherein P p represents the electric pump power that needs to be controlled, and k3 is a coefficient related to the electric pump efficiency, pipeline resistance and other parameters;

[0042] Step S60-3, feed the calculated P p value back to the power control module of the electric pump through an electric signal to realize accurate adjustment of the electric pump power, thereby ensuring that the addition speed of various fluid reagents meets the requirements.

[0043] Further, the step S70 specifically comprises:

[0044] Step S70-1, continuously read the pressure value data of each sub-space collected in step S10 to monitor the pressure change in real time;

[0045] Step S70-2, simultaneously read the shaft motor power data obtained in step S30, analyze the motor load change;

[0046] Step S70-3, according to the real-time fluctuation of the pressure value and the motor power, judge whether it is necessary to dynamically adjust the adding speed of various reagents calculated in step S60;

[0047] Step S70-4, if the pressure value or the motor power appears abnormal fluctuation, the adding speed of various reagents needs to be adjusted accordingly to ensure the stability of the subsequent process;

[0048] Step S70-5, feedback the dynamically adjusted adding speed parameters of various reagents to the electric pump power control module in step S60 to realize closed-loop control;

[0049] Step S70-6, continuously monitor the pressure value and the motor power to ensure stable operation of the whole process of extraction and reagent adding.

[0050] Among them, the material blocking plate in the reagent adding structure is made of polytetrafluoroethylene material, which has excellent wear resistance and corrosion resistance.

[0051] Compared with the prior art, the beneficial effects of the seafront black and odorous silt clay extraction and reagent adding integrated device provided by the application are:

[0052] 1. Efficient and stable extraction capacity. The device adopts core structures such as tubular shell, rotatable shaft and spiral support plate, which can realize continuous and efficient separation of black and odorous silt. Through real-time monitoring and closed-loop control of the pressure inside the shell, the extraction process can be ensured to be stable and orderly, and the precision and yield of silt separation are greatly improved.

[0053] 2. Precise and intelligent reagent adding control. Based on the extraction link, the device integrates a multi-channel reagent adding structure, which can accurately add various required chemical reagents according to the actual characteristics of the extracted materials. Through the intelligent algorithm of the upper computer, dynamic adjustment of the reagent adding speed is realized, ensuring that the whole reagent adding process is highly controllable, and the complexity of manual operation is greatly reduced.

[0054] 3. Integrated design, simplifying the process. Compared with the traditional dispersed extraction and reagent adding treatment, this device integrates two functions, greatly simplifying the whole operation process. The black and odorous silt after extraction does not need to be transported and pretreated again, but can directly enter the reagent adding unit for subsequent treatment. This not only improves the overall operation efficiency, but also significantly reduces the equipment investment and operating cost.

[0055] Therefore, the scheme of the present application solves the technical problem in the prior art that the black and odorous silt clay after extraction needs to be treated with an additive, and the additive treatment process needs to stir the black and odorous silt clay, which often needs a large amount of stirring work and is difficult to stir uniformly, thereby affecting the subsequent treatment. BRIEF DESCRIPTION OF DRAWINGS

[0056] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0057] Figure 1 A cross-sectional view of the device provided by the present application is shown in the figure.

[0058] Figure 2 A schematic diagram of the additive structure is shown in the figure.

[0059] Figure 3 A flowchart of the execution steps of the additive speed control module is shown in the figure.

[0060] In the drawings, the components represented by each number are listed as follows:

[0061] 10, tubular shell; 11, rotating shaft; 12, spiral support plate; 13, material blocking plate; 14, electric pump; 15, liquid inlet hole; 16, liquid outlet hole; 17, pressure gauge. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0063] As Figure 1The method comprises the following steps: a tubular shell 10 is provided, a rotating shaft 11 is arranged on the axis of the tubular shell 10, the top end of the rotating shaft 11 is rotated by a motor or a transmission mechanism, a continuous spiral support plate 12 is arranged around the rotating shaft 11, the top end of the spiral support plate 12 is flush with the top end of the rotating shaft, the bottom end of the spiral support plate 12 is flush with the bottom end of the rotating shaft 11, the outer diameter of the spiral support plate 12 is smaller than the inner diameter of the tubular shell 10, the spiral support plate 12 divides the internal space of the tubular shell 10 into a plurality of subspaces, a plurality of additive holes are formed in each subspace, an additive structure is arranged in the additive hole, the additive structure is used for adding different types of fluid reagents, the additive structure comprises an electric pump 14, a liquid inlet hole 15, a liquid outlet hole 16, a material blocking plate 13 and a pressure gauge 17, the material blocking plate is fixedly arranged on the inner wall of the tubular shell, the material blocking plate and the inner wall of the tubular shell form a triangular structure, the inclined surface of the triangular structure is the material blocking plate, the pressure gauge is attached to the material blocking plate, the inclined surface of the triangular structure is located below the entire triangular structure, the liquid outlet hole is formed above the triangular structure, the output end of the electric pump is connected with the liquid outlet hole through the additive hole, and the input end of the electric pump is provided with the liquid inlet hole; the pressure gauge is electrically connected with an upper computer, the upper computer is provided with an additive speed control module, which is used for calculating the power of the corresponding electric pump according to the pressure values collected by the plurality of pressure gauges and controlling the corresponding electric pump.

[0064] The additive speed control module is used for executing the following steps:

[0065] S10, acquiring pressure value data collected by a plurality of pressure gauges;

[0066] S20, calculating the extraction rate of black and odorous sludge clay according to the pressure value data;

[0067] S30, calculating the weight of the black and odorous sludge clay being extracted according to the power information of the rotating shaft motor;

[0068] S40, further calculating the weight of the black and odorous sludge clay actually extracted in combination with the inner diameter and height information of the tubular shell;

[0069] S50, calculating the addition amount of various fluid reagents according to the addition proportion of different reagents;

[0070] S60, controlling the working power of the corresponding electric pump according to the calculated addition amount of various fluid reagents, so as to realize the speed control of the additive;

[0071] S70, continuously monitoring the pressure value data and the motor power information, and dynamically adjusting the addition speed of various fluid reagents, so as to ensure the stability of the extraction and additive processes.

[0072] The specific implementation of the above steps is described in detail below:

[0073] Step S10: Obtain pressure value data collected by multiple pressure gauges

[0074] The purpose of this step is to collect real-time pressure data from each sub-space, providing a basis for subsequent calculation and analysis. The pressure gauges will monitor the pressure changes in each sub-space in real time and transmit the data to the upper computer's additive speed control module. Specifically, this step involves the following sub-steps:

[0075] (1) Traverse each sub-space inside the shell, and read the pressure value collected by the pressure gauge in each sub-space in turn.

[0076] (2) Store the read pressure value data in the database of the upper computer for subsequent analysis and calculation.

[0077] (3) Ensure that the pressure value data of all sub-spaces has been successfully collected and stored.

[0078] Step S20: Calculate the extraction rate of black and odorous sludge clay corresponding to the pressure value data

[0079] The purpose of this step is to calculate the actual flow rate of black and odorous sludge clay being extracted from the inside of the shell according to the real-time pressure changes. The specific calculation process is as follows:

[0080] V = k1 x ΔP

[0081] Where V represents the extraction flow rate of black and odorous sludge clay, ΔP represents the pressure difference between two adjacent sub-spaces, and k1 is a coefficient related to the shell structure parameters and material characteristics, which needs to be determined by experimental test.

[0082] (1) Traverse the adjacent sub-spaces inside the shell, and calculate the pressure difference ΔP of each two adjacent sub-spaces.

[0083] (2) Substitute the pressure difference into the above formula to calculate the corresponding extraction flow rate V of black and odorous sludge clay.

[0084] (3) Average the extraction flow rates of each sub-space to obtain the overall extraction rate of black and odorous sludge clay.

[0085] Step S30: Calculate the weight of black and odorous sludge clay being extracted according to the power information of the shaft motor

[0086] The purpose of this step is to calculate the weight of black and odorous sludge clay being extracted from the inside of the shell by combining the physical characteristics of black and odorous sludge clay with the power parameters of the shaft motor. The specific calculation process is as follows:

[0087] M = k2 x P m / V

[0088] wherein M represents the weight of the black and odorous silt clay being extracted, P m represents the real-time power of the rotating shaft motor, V is the black and odorous silt clay extraction flow rate calculated in step S20, k2 is a coefficient related to the density of the black and odorous silt clay, the shell structure and other parameters, and the value thereof needs to be determined through experimental tests.

[0089] (1) Read the real-time power parameter P m of the rotating shaft motor.

[0090] (2) Substitute P m and V into the above formula to calculate the weight M of the black and odorous silt clay being currently extracted.

[0091] (3) Store the calculated M value in the database of the upper computer for subsequent steps.

[0092] Step S40: Further calculate the weight of the black and odorous silt clay actually extracted in combination with the inner diameter and height information of the tubular shell

[0093] The purpose of this step is to further correct the weight of the black and odorous silt clay calculated in step S30 in combination with the geometric size parameters of the tubular shell to obtain more accurate extraction data. The specific calculation process is as follows:

[0094] V c = π x r 2 x h

[0095] M c = p x V c

[0096] wherein V c represents the total volume inside the shell, r is the inner radius of the shell, h is the height of the shell, p is the density of the black and odorous silt clay, and M c is the weight of the black and odorous silt clay calculated according to the geometric size of the shell.

[0097] (1) Read the inner diameter r and height h parameters of the tubular shell.

[0098] (2) Substitute r and h into the first formula to calculate the total volume V c inside the shell.

[0099] (3) Substitute the known density p of the black and odorous silt clay into the second formula to calculate the weight M c of the black and odorous silt clay calculated according to the geometric size of the shell.

[0100] (4) Compare and analyze the two black and odorous silty clay weight values ​​calculated in steps S30 and S40 as a reference for subsequent additive control.

[0101] Step S50: Calculate the amount of each fluid reagent to be added based on the different reagent addition ratios.

[0102] The purpose of this step is to determine the specific amounts of various fluid reagents to be added based on the weight of the extracted black, odorous silty clay. The addition ratios of different reagents need to be set and adjusted according to the actual characteristics of the black, odorous silty clay. The specific calculation process is as follows:

[0103] M r1 =k r1 ×M

[0104] M r2 =k r2 ×M

[0105] M r3 =k r3 ×M

[0106] Among them, M r1 M r2 M r3 These represent the weights of the three types of fluid reagents that need to be added, k r1 k r2 k r3 The addition ratio coefficient for the corresponding reagent needs to be adjusted according to the actual situation.

[0107] (1) Based on the weight M of the black and odorous silty clay obtained in steps S30 and S40, substitute it into the above three formulas to calculate the added weight of the three fluid reagents.

[0108] (2) Store the calculated weights of the three reagents in the database of the host computer for use in subsequent steps.

[0109] (3) If it is necessary to adjust the reagent addition ratio, the three coefficients k can be modified accordingly. r1 k r2 k r3 The value of .

[0110] Step S60: Based on the calculated dosage of various fluid reagents, control the operating power of the corresponding electric pump to achieve dosage rate control.

[0111] The purpose of this step is to precisely control the speed of the entire dosing process by adjusting the power of the electric pump based on the calculated amounts of various fluid reagents obtained in the preceding steps. The specific implementation process is as follows:

[0112] P p =k3×Mr / t

[0113] where P p represents the required control of the electric pump power, M r is the added weight of a certain fluid reagent, t is the target addition time of the reagent, and k3 is a coefficient related to the electric pump efficiency, pipeline resistance, and other parameters, which needs to be determined by experimental tests.

[0114] (1) The added weights M r1 , M r2 , and M r3 of the three fluid reagents calculated in step S50 are traversed.

[0115] (2) For each reagent, according to its target addition time t, the required working power P p of the corresponding electric pump is calculated by substituting the above formula.

[0116] (3) The calculated P p value is fed back to the power control module of the electric pump through an electric signal, realizing accurate adjustment of the electric pump power, thereby ensuring that the addition speed of various fluid reagents meets the requirements.

[0117] Step S70: Continuously monitor pressure value data and motor power information, dynamically adjust the addition speed of various fluid reagents, and ensure the stability of the extraction and reagent addition process

[0118] The purpose of this step is to dynamically adjust the addition speed of various fluid reagents by real-time monitoring of feedback information from various pressure gauges and shaft motors, ensuring the stability of the entire extraction and reagent addition process, and avoiding problems such as excessive pressure fluctuations or serious material blockage. The specific implementation process is as follows:

[0119] (1) Continuously read the pressure value data of each sub-space collected in step S10, and monitor the pressure change in real time.

[0120] (2) At the same time, read the shaft motor power data obtained in step S30, and analyze the motor load change.

[0121] (3) According to the real-time fluctuations of pressure value and motor power, determine whether it is necessary to dynamically adjust the addition speed of various reagents calculated in step S60.

[0122] (4) If the pressure value or motor power appears abnormal fluctuation, it indicates that there is a problem in the extraction or reagent addition process, and the addition speed of various reagents needs to be adjusted accordingly to ensure the stability of the subsequent process.

[0123] (5) The dynamically adjusted addition speed parameters of various reagents are fed back to the electric pump power control module of step S60, realizing closed-loop control.

[0124] (6) Continuous monitoring of pressure values and motor power to ensure stable operation throughout the extraction and reagent addition process.

[0125] In the above description, the specific variables are explained as follows:

[0126] V: extraction flow rate of black and odorous silt clay, unit: m / s 3 / s

[0127] ΔP: pressure difference between two adjacent subspaces, unit: Pa

[0128] M: weight of black and odorous silt clay being extracted, unit: kg

[0129] P m : real-time power of the shaft motor, unit: W

[0130] V c : total volume inside the tubular shell, unit: m 3

[0131] r: inner radius of the tubular shell, unit: m

[0132] h: height of the tubular shell, unit: m

[0133] ρ: density of black and odorous silt clay, unit: kg / m 3

[0134] M c : weight of black and odorous silt clay calculated based on shell geometry, unit: kg

[0135] M r1 , M r2 , M r3 : weights of three types of fluid reagents to be added, unit: kg

[0136] P p : power of the electric pump to be controlled, unit: W

[0137] t: target addition time of various fluid reagents, unit: s

[0138] r1, r2, r3: corresponding to three different types of fluid reagents respectively

[0139] k1: coefficient related to shell structure parameters and material characteristics, dimensionless

[0140] k2: coefficient related to black and odorous silt clay density, shell structure, etc. parameters, dimensionless

[0141] k3: coefficient related to electric pump efficiency, pipeline resistance, etc. parameters, dimensionless

[0142] kr1 k r2 k r3 The addition ratio coefficients of the three fluid reagents, dimensionless.

[0143] V=k1×ΔP

[0144] This formula is used to calculate the extraction flow rate V of black and odorous silty clay, where k1 is a coefficient related to shell structure parameters and material properties.

[0145] M = k2 × Pm / V

[0146] This formula is used to calculate the weight M of the black and odorous silty clay being extracted, where k2 is a coefficient related to parameters such as the density and shell structure of the black and odorous silty clay.

[0147] V c =π×r 2 ×h

[0148] M c =ρ×V c

[0149] The first formula is used to calculate the total volume V inside the tubular shell. c The second formula is used to calculate the weight M of the black, odorous silty clay based on the shell geometry and material density. c .

[0150] M r1 =k r1 ×M

[0151] M r2 =k r2 ×M

[0152] M r3 =k r3 ×M

[0153] These three formulas are used to determine the addition ratio coefficient k of different reagents. r1 k r2 k r3 The added weight M of the three fluid reagents was calculated. r1 M r2 M r3 .

[0154] P p =k3×M r / t

[0155] This formula is used to determine the weight M of a certain fluid reagent being added. r Given the target addition time t, calculate the required operating power P of the corresponding electric pump. pwherein k3 is a coefficient related to the electric pump efficiency, the pipeline resistance and other parameters.

[0156] Specifically, the principle of the present application is:

[0157] 1. Precise control of the extraction process. The device can realize continuous and efficient separation of black and odorous sludge by arranging a rotatable shaft and a spiral support plate inside the tubular shell. The rotation of the rotating shaft drives the spiral support plate to move slowly, forming multiple independent subspaces inside the shell. In these subspaces, the sludge material will be continuously transported forward under the action of spiral stirring, so as to be gradually separated from the water body.

[0158] To ensure the stability of the extraction process, the device is provided with a pressure monitoring point on each subspace inside the shell. By real-time acquisition of pressure data, the actual extraction flow rate of black and odorous sludge can be calculated. At the same time, by detecting the power parameters of the rotating shaft motor and combining the density characteristics of the material, the weight of the sludge being extracted can be calculated.

[0159] Based on the above pressure and weight information, the reagent adding speed control module can dynamically adjust the amount of various reagents, ensure that the subsequent chemical treatment matches the aforementioned extraction process, and avoid problems such as serious material blockage or sudden pressure rise. This closed-loop control mechanism ensures that the entire extraction process is highly stable and controllable, greatly improving the operation efficiency and product quality.

[0160] 2. Intelligent reagent control. Compared with the simple extraction process, the subsequent treatment of black and odorous sludge is a complex process. Different types of sludge have great differences in organic matter content, heavy metal concentration and other characteristics, so the types and amounts of chemical reagents required are also greatly different.

[0161] To solve this problem, the device integrates a multi-channel reagent adding structure based on the extraction unit. By real-time monitoring of pressure and motor power, the reagent adding speed control module can accurately estimate the weight and characteristics of the black and odorous sludge being extracted, and then automatically calculate the optimal amount of various reagents according to the preset addition ratio. Then, by accurately controlling the working power of the corresponding electric pump, the dynamic adjustment of the adding speed of various reagents is realized, ensuring that the entire reagent adding process is highly controllable.

[0162] This intelligent reagent control not only greatly reduces the complexity of manual operation, but also can optimize and adjust the ratio of various reagents in real time according to the real-time changes of the material characteristics, so as to ensure that the subsequent treatment effect is always in the best state. Compared with the traditional fixed ratio of reagent addition, this dynamic adjustment mechanism is undoubtedly more flexible and efficient.

[0163] 3. The advantages of integrated design. Compared with the traditional decentralized operation mode, the device adopts the innovative design concept of integrated extraction and additive addition. By integrating the two functions in the same device, not only the entire operation process is greatly shortened, the material handling and pretreatment links are simplified, but also the real-time monitoring data obtained during the extraction process can be fully utilized to provide reliable basis for additive control.

[0164] This integrated design not only improves the overall operation efficiency and reduces the complexity of manual operation, but also is beneficial to the environmental adaptability of the equipment. The traditional decentralized equipment often needs to be transported back and forth in harsh environments such as water and mud, which is easily disturbed by the outside. The closed tubular structure adopted by the device can effectively isolate the influence of environmental factors, and is especially suitable for operation in underwater or other complex environments. At the same time, through real-time feedback control of pressure, power and other parameters, the device can ensure stable and efficient operation even in complex working conditions.

[0165] In order to further illustrate the technical solutions of the present application, specific embodiments will be described in detail below.

[0166] The integrated extraction and additive addition device for coastal black and smelly silt clay of the present application is applied in the black and smelly silt treatment project of the coastal shrimp pond in the north of Jiaozhou Bay. A large amount of black and smelly silt rich in organic matter and heavy metals has accumulated at the bottom of the shrimp pond, which has seriously affected the water environmental quality of the region.

[0167] According to the actual detection of the mud at the bottom of the shrimp pond, the main physicochemical indexes of the black and smelly silt are as follows: water content 85%, organic matter content 22%, and average concentration of copper, nickel, lead and other heavy metals 120 mg / kg, 85 mg / kg and 95 mg / kg respectively. If the black and smelly silt is directly landfilled or simply stacked, it will cause continuous pollution to the surrounding soil and groundwater, so it is urgent to take scientific and effective treatment measures.

[0168] After detailed site investigation and process parameter test, the main technical indexes of the device are determined as follows:

[0169] 1. Tubular shell: inner diameter 1.2 m, height 3 m, made of corrosion-resistant stainless steel material;

[0170] 2. Rotating shaft: made of high-strength alloy material, rated speed range 10-50 rpm, driven by a 10 kW power motor;

[0171] 3. Spiral support plate: outer diameter 1 m, pitch 0.2 m, spiral angle 30°, which can be optimized and adjusted according to the characteristics of the silt;

[0172] 4. Additive hole: diameter 50 mm, hole spacing 0.3 m, a total of 12 holes;

[0173] 5. Additive structure: electric pump rated flow 3 m 3 / h, head 15 m, the material blocking plate uses polytetrafluoroethylene material;

[0174] 6. Pressure gauge: measurement range 0-1 MPa, accuracy ±0.5%, a total of 12;

[0175] 7. Upper computer: industrial-grade embedded controller is used, and the additive speed control module realizes self-adaptive adjustment based on fuzzy algorithm.

[0176] After the installation and commissioning of the device are completed, the black and odorous sludge collection and treatment work of the shrimp pond is officially started. According to the experimental test data before, the specific implementation process of the device in the extraction and additive control is as follows:

[0177] 1. Extraction process

[0178] First, start the rotating shaft motor to drive the spiral support plate to rotate slowly. Under the feedback of the motor power monitoring module, the control system can master the rotating speed of the spiral support plate in real time. At the same time, the pressure sensors in each sub-space inside the shell also start to collect pressure data in real time and transmit them to the additive speed control module of the upper computer.

[0179] According to the previous experimental study, there is a linear relationship between the extraction flow rate V of the black and odorous sludge inside the device shell and the pressure difference ΔP of the adjacent sub-space as follows:

[0180] V = 1.05 x ΔP

[0181] That is, by monitoring and calculating the pressure difference, the actual extraction flow rate of the current black and odorous sludge can be accurately estimated.

[0182] After 5 minutes of start-up adjustment, the pressure difference inside the shell tends to be stable, and the pressure sensor readings are as follows:

[0183] ΔP1 = 0.12 MPa

[0184] ΔP2 = 0.15 MPa

[0185] ΔP3 = 0.18 MPa ...

[0187] ΔP 12 = 0.21 MPa

[0188] Substituting the above formula, the extraction flow rate of each sub-space is calculated as follows:

[0189] V1 = 0.126 m 3 / h

[0190] V2 = 0.158 m 3 / h

[0191] V3 = 0.189 m 3 / h ....

[0193] V 12 = 0.221 m 3 / h

[0194] The arithmetic mean of the flow rate values of the 12 subspaces is 0.175 m 3 / h.

[0195] At the same time, by monitoring the real-time power P m = 8.5 kW of the rotating shaft motor, combined with the average density of the black and odorous sludge ρ = 1200 kg / m 3 , the weight of the black and odorous sludge currently being extracted can be calculated as:

[0196] M = 1.2 x 8.5 / 0.175 = 58.3 kg

[0197] Through comprehensive analysis of pressure monitoring and motor power, the device can accurately grasp the extraction status of black and odorous sludge, providing a reliable basis for subsequent additive control.

[0198] 2. Additive process

[0199] According to the aforementioned analysis of the characteristics of the shrimp pond sludge, in addition to a large amount of organic matter and heavy metals, there is also a certain amount of other inorganic salts in the black and odorous sludge. Therefore, when performing subsequent chemical treatment, the following three types of reagents need to be added:

[0200] (1) Flocculant: polyaluminum chloride (PAC), the addition ratio is 10% of the weight of the sludge;

[0201] (2) Reducing agent: ferrous sulfate, the addition ratio is 20% of the weight of the sludge;

[0202] (3) PH adjuster: sodium hydroxide, the addition ratio is 15% of the weight of the sludge.

[0203] Substituting the addition ratios of the above three reagents into the formula, we get:

[0204] M r1 = 0.1 x 58.3 = 5.83 kg

[0205] M r2 = 0.2 x 58.3 = 11.66 kg

[0206] M r3= 0.15 x 58.3 = 8.75 kg

[0207] Then, according to the amount of the three reagents, by adjusting the working power of the corresponding electric pump, the precise control of the adding speed is realized. Taking the PAC flocculant as an example, the required electric pump power can be calculated as follows:

[0208] P p = 2 x 5.83 / 0.5 = 23.32 kW

[0209] Wherein, k3 takes the value of 2, and the target adding time t is set to 0.5 h. Through the precise control of the electric pump power, the PAC solution can be slowly injected into the shell at a constant rate of 5.83 kg / 0.5 h = 11.66 kg / h, and fully mixed with the black and odorous sludge for reaction.

[0210] Similarly, for the reducing agent ferrous sulfate and the pH regulator sodium hydroxide, the electric pump power is calculated to be 46.64 kW and 34.98 kW, respectively. The adding speed of the above three reagents is monitored and dynamically adjusted by the reagent adding speed control module of the upper computer in real time, to ensure that the adding ratio of various reagents always remains in the best state.

[0211] The black and odorous sludge clay extracted by adding reagents is treated by adding oxidizing agent + curing agent + dehydrating agent for oxidation, curing and dehydration, wherein the curing agent is formed by taking a variety of high-strength inorganic cementing materials as main materials, adding other auxiliary materials (such as high-efficiency activator, etc.) and self-developed oxidizing agent and water sealing agent. The mechanism of action is as follows: under normal circumstances, when the water content of the soil sample to be treated is high (water content of 30%-50%), the curing agent can consume the free water in the soil, convert the free water into crystal water, and activate the soil particles themselves, so that the soil becomes an integral structure through the reaction between the soil particles. At the same time, the over-carbon-based oxidizing agent can slowly oxidize and degrade the black and odorous organic matter, quickly remove anaerobic substances, reduce the soil viscosity, and improve the workability. The water stability coefficient of the cured soil is higher than 90%; the 7d unconfined compressive strength of the cured soil is higher than 3.4 MPa; the dehydrating agent is compounded by quicklime, inorganic nano materials and high molecular polymer, and its dehydration capacity is realized through chemical reaction, which is suitable for dewatering treatment of sludge with water content less than 60%.

[0212] In order to further verify the excellent performance of the device in extraction and reagent adding, the operation data of the whole treatment process are recorded and analyzed in detail, and compared with the traditional decentralized operation mode. The specific results are as follows:

[0213] 1. Comparison of extraction efficiency

[0214] In the same processing time (2h), the device extracted a total of 58.3 tons of black and smelly sludge, while the traditional mechanical excavation equipment of the same size could only extract 32.4 tons, an increase of 79.6%. This is mainly due to the unique shell and screw design of the device, which can achieve continuous and efficient separation of sludge.

[0215] 2. Energy consumption comparison

[0216] Although the total power of the device is slightly higher than that of the traditional scheme (18.5kW vs 15kW), due to the significant increase in extraction efficiency, the energy consumption per unit product is reduced by 28.4%, from 0.46kWh / t to 0.33kWh / t. This shows that the device has obvious advantages in process optimization and energy utilization.

[0217] 3. Comparison of dosing accuracy

[0218] The traditional decentralized dosing mode requires manual setting of the addition ratio of various reagents according to experience, which often makes it difficult to ensure the best ratio. The device, through real-time monitoring of sludge characteristics and intelligent algorithm for dynamic adjustment, the actual addition amount of PAC, ferrous sulfate and sodium hydroxide deviates from the best ratio by only ±5%, which is much better than manual operation.

[0219] 4. Comparison of running stability

[0220] During the 2h continuous operation, the pressure fluctuation of the device is controlled within ±0.02MPa, and the motor load remains stable. The equipment using the traditional scheme is prone to serious blockage or power surge due to the lack of effective process control, and has to be frequently shut down for maintenance.

[0221] 5. Comparison of environmental adaptability

[0222] The device adopts a closed tubular structure design, which can effectively isolate external environmental interference and is particularly suitable for operation under water or other harsh conditions. In contrast, the traditional decentralized equipment needs to be frequently moved between water and mud, which not only has low efficiency, but also is easily affected by environmental factors.

[0223] From the above comparative analysis, it can be seen that the coastal black and smelly sludge extraction and agent integrated device proposed in the present invention has made significant progress in extraction efficiency, energy consumption, agent accuracy, running stability and environmental adaptability, etc. compared with the traditional technical scheme. This is mainly due to its ingenious structure design and intelligent control algorithm, which can realize the deep integration of extraction and agent functions and accurately control the key process parameters.

[0224] Specifically, the device realizes the continuous and efficient separation of black and odorous sludge through core structures such as a tubular shell, a rotatable shaft and a spiral support plate, and the real-time monitoring of pressure and motor power ensures the stability of the extraction process. On this basis, the device also integrates a multi-channel reagent adding structure, which can automatically adjust the adding speed of various reagents according to the characteristics of the sludge, greatly improving the reagent adding precision. At the same time, the closed tubular design also makes the device have good environmental adaptability and is suitable for harsh working conditions such as underwater.

[0225] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An integrated device for extracting and adding additives to black and odorous silty clay from coastal areas, characterized in that, The device has a tubular shell with a rotating shaft mounted on its central axis. The top of the rotating shaft rotates via a motor or transmission mechanism. A continuous spiral support plate surrounds the rotating shaft, with its top and bottom flush with the top and bottom of the rotating shaft. The outer diameter of the spiral support plate is smaller than the inner diameter of the tubular shell. The spiral support plate divides the internal space of the tubular shell into multiple sub-spaces. Each sub-space has multiple dosing holes, each equipped with a dosing structure for adding different types of fluid reagents. The dosing structure includes an electric pump, an inlet port, an outlet port, and a baffle. The device includes a baffle plate and a pressure gauge. The baffle plate is fixedly installed on the inner wall of the tubular housing, forming a triangular structure with the inner wall of the tubular housing. The inclined surface of the triangular structure is the baffle plate, and the pressure gauge is attached to the baffle plate. The inclined surface of the triangular structure is located below the entire triangular structure, and a liquid outlet is provided at the top of the triangular structure. The output end of the electric pump is connected to the liquid outlet through the dosing port, and the input end of the electric pump is provided with a liquid inlet. The pressure gauge is electrically connected to a host computer, which is equipped with a dosing rate control module for calculating the power of the corresponding electric pump based on the pressure values ​​collected by multiple pressure gauges and controlling the corresponding electric pump.

2. The integrated device for extracting and adding additives to black and odorous silty clay from coastal areas according to claim 1, characterized in that, The dosing rate control module is used to perform the following steps: S10. Acquire pressure data collected by multiple pressure gauges; S20. Based on the pressure value data, calculate the corresponding extraction rate of black and odorous silty clay. S30. Calculate the weight of the black and odorous silty clay being extracted based on the power information of the rotating shaft motor. S40. Combining the information on the inner diameter and height of the tubular shell, the weight of the actual extracted black and odorous silty clay is further calculated. S50. Calculate the amount of each fluid reagent to be added based on the addition ratio of different reagents. S60. Based on the calculated amount of various fluid reagents to be added, control the working power of the corresponding electric pump to achieve the speed control of reagent addition; S70 continuously monitors pressure data and motor power information, dynamically adjusts the addition rate of various fluid reagents, and ensures the stability of the extraction and dosing process.

3. The integrated device for extracting and adding additives to black and odorous silty clay in coastal areas according to claim 2, characterized in that, Step S10 specifically includes: Step S10-1: Traverse each subspace inside the tubular shell and read the real-time pressure data collected by the pressure gauge in each subspace in turn. Step S10-2: Store the pressure values ​​of each subspace that have been read into the database of the host computer for subsequent analysis and calculation. Step S10-3: Ensure that the pressure value data of all subspaces has been successfully collected and stored in the database.

4. The integrated device for extracting and adding additives to black and odorous silty clay from coastal areas according to claim 2, characterized in that, Step S20 specifically includes: Step S20-1: Traverse the adjacent subspaces inside the tubular shell and calculate the pressure difference ΔP between every two adjacent subspaces; Step S20-2: Substitute the calculated pressure difference ΔP into the formula V=k1×ΔP, where V represents the extraction flow rate of black and odorous silty clay, and k1 is a coefficient related to the shell structure parameters and material properties to calculate the extraction flow rate V of each subspace. Step S20-3: The calculated extraction flow rate V of each subspace is arithmetically averaged to obtain the overall extraction rate of black and odorous silty clay.

5. The integrated device for extracting and adding additives to coastal black and odorous silty clay according to claim 2, characterized in that, Step S30 specifically includes: Step S30-1: Read the real-time power parameter P of the rotating shaft motor. m ; Step S30-2, P m Substituting the extraction flow rate V calculated in step S20 into the formula M = k2 × P m / V, where M represents the weight of the black and odorous silty clay being extracted, and k2 is a coefficient related to the density and shell structure parameters of the black and odorous silty clay. The weight M of the black and odorous silty clay currently being extracted is calculated. Step S30-3: Store the calculated weight M of the black and odorous silty clay in the database of the host computer for use in subsequent steps.

6. The integrated device for extracting and adding additives to black and odorous silty clay from coastal areas according to claim 2, characterized in that, Step S40 specifically includes: Step S40-1: Read the inner diameter r and height h parameters of the tubular shell; Step S40-2, substitute r and h into formula V c =π×r 2 The total internal volume V of the shell is calculated by multiplying by h. c ; Step S40-3: Substitute the known density ρ of the black, odorous silty clay into the formula M. c =ρ×V c The weight M of the black, odorous silty clay, estimated based on the shell's geometry, was calculated. c ; Step S40-4: Compare and analyze the two weight values ​​of black and odorous silty clay calculated in steps S30 and S40, and use them as a reference for subsequent additive control.

7. The integrated device for extracting and adding additives to black and odorous silty clay from coastal areas according to claim 2, characterized in that, Step S50 specifically includes: Step S50-1: Based on the weight M of the black and odorous silty clay obtained in steps S30 and S40, substitute it into formula M. r1 =k r1 ×M、M r2 =k r2 ×M、M r3 =k r3 ×M, where M r1 M r2 M r3 These represent the weights of the three types of fluid reagents that need to be added, k r1 k r2 k r3 The addition weight of the three fluid reagents was calculated based on the addition ratio coefficient of the corresponding reagents. Step S50-2: Store the calculated weights of the three reagents in the database of the host computer for use in subsequent steps.

8. The integrated device for extracting and adding additives to black and odorous silty clay from coastal areas according to claim 2, characterized in that, Step S60 specifically includes: Step S60-1: Iterate through the three fluid reagent addition weights M calculated in step S50. r1 M r2 M r3 ; Step S60-2: For each reagent, substitute the values ​​into formula P based on its target addition time t. p =k3×M r Calculate the required operating power P of the corresponding electric pump. p , where P p This indicates the electric pump power that needs to be controlled, and k3 is a coefficient related to the electric pump efficiency and pipeline resistance parameters. Step S60-3, calculate P p The value is fed back to the power control module of the electric pump via an electrical signal, enabling precise adjustment of the electric pump power.

9. The integrated device for extracting and adding additives to black and odorous silty clay from coastal areas according to claim 2, characterized in that, Step S70 specifically includes: Step S70-1: Continuously read the pressure value data of each subspace collected in step S10 and monitor the pressure changes in real time. Step S70-2: Simultaneously read the shaft motor power data obtained in step S30 and analyze the changes in motor load; Step S70-3: Based on the real-time fluctuations in pressure and motor power, determine whether it is necessary to dynamically adjust the addition rates of various reagents calculated in step S60. In step S70-4, if the pressure value or motor power fluctuates abnormally, the addition rate of various reagents needs to be adjusted accordingly to ensure the stability of the subsequent process. Step S70-5: The dynamically adjusted reagent addition rate parameters are fed back to the electric pump power control module in step S60 to achieve closed-loop control. Step S70-6: Continuously monitor the pressure value and motor power to ensure stable operation throughout the extraction and dosing process.

10. The integrated device for extracting and adding additives to black and odorous silty clay from coastal areas according to claim 1, characterized in that, The baffle plate in the additive structure is made of polytetrafluoroethylene, which has excellent wear resistance and corrosion resistance.

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