CN113003627B - Concrete sewage recovery treatment system and method - Google Patents
Concrete sewage recovery treatment system and method Download PDFInfo
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- CN113003627B CN113003627B CN202110245098.7A CN202110245098A CN113003627B CN 113003627 B CN113003627 B CN 113003627B CN 202110245098 A CN202110245098 A CN 202110245098A CN 113003627 B CN113003627 B CN 113003627B
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Abstract
The invention relates to a concrete sewage recovery processing system and a method, wherein the system comprises a sand-stone separating mechanism and a fine sand recovering mechanism, most sand stones in concrete sewage can be separated and recovered, the sewage obtained by separation is discharged into a blending tank, a sewage blending mechanism is arranged in the blending tank, a measuring block suspended in the sewage is arranged in the sewage blending mechanism, the density of the sewage in the blending tank is calculated and obtained by utilizing the principle that the hollow measuring block is subjected to different buoyancy forces in water bodies with different densities, the quality of clear water required to be added is calculated through the water body concentration, the specific concentration blending of the sewage is realized, the mass blending process of the concrete sewage is effectively realized, and the blending efficiency is greatly improved.
Description
Technical Field
The invention belongs to the technical field of concrete recycling, and relates to a concrete sewage recycling system and a concrete sewage recycling method.
Background
Many sewage recovery treatment systems on the market can only solve the sand-stone separation problem of sewage and the collection, precipitation and uncertainty of sewage concentration, which causes technicians in concrete enterprises to dare not to reuse, so that the quality of concrete is influenced; in the prior art, an intermittent sewage blending method is mostly adopted to keep the sewage concentration within a set range of a concrete enterprise laboratory, so that the concrete sewage can be recycled, and the zero discharge of the sewage is realized. However, the method needs to allocate the sewage for multiple times, the allocation efficiency is low, and due to system errors in each allocation process, the accumulated error of the concentration of the recovered sewage obtained after multiple allocation is large, and the allocation accuracy is poor.
Chinese patent document CN208410253U discloses a grout blending device, which comprises a concentration measuring scale and a blending measuring scale, wherein the concentration measuring scale is used for measuring the concentration of the recycled concrete grout, and the blending measuring scale is used for diluting the concrete grout to make the concentration of the concrete grout reach the concentration required by concrete mixing. The slurry blending device can solve the problem of zero sewage discharge, realizes sewage recycling, achieves the purposes of energy conservation and emission reduction and reduces the production cost of concrete, but the device adopts an intermittent sewage blending method, needs to carry out a sewage blending process for many times, and reduces the blending efficiency.
Chinese patent document CN109279798A discloses a method and a system for recycling large quantities of fresh waste concrete. The method comprises the following steps: separating and recovering the sandstone in the waste concrete; step two: recovering and treating the waste slurry; step three: and blending the recovered slurry into new slurry for producing fresh concrete. The system comprises a sand-stone separation device, a waste slurry pool, a cyclone, a solid content adjusting tank and a recovery slurry pump; a plurality of supporting upright columns are arranged on the outer wall of the solid content adjusting tank, and weighing devices are arranged on the supporting upright columns; the slurry inlet of the cyclone extends into the waste slurry tank, and the slurry outlet of the cyclone is connected with the feed inlet of the recovery slurry pump; the discharge gate of retrieving the stuff pump is connected with the thick liquid end that advances of retrieving the thick liquid pipe, the play thick liquid end of retrieving the thick liquid pipe stretches into in the solid content adjusting tank. The system can treat large-batch waste concrete, the produced waste slurry is recycled for production of new concrete, resources are saved, but the weight of the tank body is weighed by using the adjusting tank with fixed volume in the method, the supporting strength of the tank body can be greatly reduced due to the fact that the weighing device is arranged on the supporting upright post in the structure, potential safety hazards are caused, and in addition, when the size of the tank body is too large, difficulty is caused to equipment installation.
Disclosure of Invention
Aiming at the problems in the prior art, the invention discloses a concrete sewage recovery treatment system and a method, wherein the sewage concentration in a blending pool is obtained by calculation by utilizing the buoyancy state change of a measuring block, so that the mass blending process of concrete sewage is effectively realized, and the blending efficiency is greatly improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a concrete sewage recovery processing system, including grit loading mechanism, grit separating mechanism, fine sand recovery mechanism, sewage allocation mechanism and a plurality of cell body, wherein the cell body includes effluent water sump, allotment pond, finished product pond and depositing reservoir, the depositing reservoir pours into the clear water into respectively in allotment pond and grit separating mechanism through the pipeline, grit separating mechanism and fine sand recovery mechanism drain into sewage through the pipeline in to the effluent water sump, the finished product pond is used for depositing the sewage of allotting, all be equipped with rabbling mechanism in effluent water sump, allotment pond and the finished product pond.
The interior of the blending pool is of a regular-shaped cuboid structure, and a liquid level detection mechanism is arranged at the upper part of the inner wall of the blending pool; the sewage allocation mechanism is located at the bottom of the allocation tank, the sewage allocation mechanism adopts a hollow square box body, the inside of the square box body comprises a hollow measuring block, the bottom surface of the measuring block is parallel to the bottom of the box body, a tension sensor is arranged under the measuring block, one end of the tension sensor is fixedly connected with the middle position of the bottom surface of the measuring block, the other end of the tension sensor is fixedly connected with the bottom surface of the square box body, wherein the lower part of the square box body is provided with a through hole for sewage to flow in or out, and the upper part of the square box body is provided with a plurality of vent holes.
Furthermore, four corners of the bottom surface of the measuring block are provided with guide posts, the inner wall of the square box body is provided with a fixing plate extending horizontally, and the fixing plate is provided with guide holes matched with the guide posts.
Further, the sewage tank comprises a first sewage tank and a second sewage tank, a first pipeline is arranged between the first sewage tank and the sand-stone separation mechanism, and the first pipeline is used for introducing sewage separated from the sand-stone separator into the first sewage tank; a second pipeline is arranged between the first sewage tank and the fine sand recovery mechanism and is used for introducing sewage in the first sewage tank into the fine sand recovery mechanism; and a third pipeline is arranged between the second sewage tank and the fine sand recovery mechanism, the third pipeline is used for introducing sewage separated by the fine sand recovery mechanism into the second sewage tank, a fourth pipeline is arranged between the clarification tank and the sand-stone separation mechanism, and the fourth pipeline is used for introducing clean water in the clarification tank into the sand-stone separation mechanism.
Furthermore, a group of sewage mixing mechanisms are respectively arranged at four corners of the bottom surface of the mixing tank.
The invention also provides a concrete sewage recovery treatment method, which comprises the following steps:
s100, the clear water of the clarification tank is introduced into a sand-stone separating mechanism, and the sand-stone separating mechanism separates and recovers sand and stone in the waste concrete: dumping waste concrete into the sand-stone separation mechanism through loading equipment, introducing clear water into the sand-stone separation mechanism through a clarification tank, screening and separating sand and stone and sewage by the sand-stone separation mechanism, recycling the sand and stone obtained by separation, and discharging the sewage obtained by separation into a first sewage tank;
s200, recycling and reusing the sewage in the first sewage tank: sewage in the first sewage tank is introduced into the fine sand separation mechanism through a pipeline, the fine sand separation mechanism centrifugally separates fine sand and sewage, the fine sand obtained by separation is recycled, and the sewage obtained by separation is discharged into a second sewage tank;
s300, recycling and reusing the sewage in the second sewage tank: sewage in the second sewage tank is introduced into the allocation tank through a pipeline, a measuring block is arranged in the sewage allocation mechanism, and the density rho of the sewage in the allocation tank is calculated by obtaining the numerical change of the buoyancy F of the measuring block in the allocation tank in the sewage;
s400, detecting the height change of the sewage level H through a liquid level detection mechanism in the blending tank, and calculating to obtain the sewage volume V in the blending tank1By adjusting the sewage density P and the sewage volume V in the pool1Calculating to obtain the mass M of the sewage in the blending tank1；
S500, utilizing the obtained sewage quality M1Calculating the concentration C of the sewage in the current blending tank1According to the current concentration C of the sewage tank1Mixing with sewage to set concentration C2Calculating the mass M of the clear water to be added2；
S600, clear water in the clarification tank is pumped through a water pump, the quality of the clear water injected into the blending tank is monitored by using a flowmeter until the quality of the clear water injected into the blending tank reaches M2The water pump stops pumping water, and in the filling process, the stirring mechanism in the blending pool continuously stirs;
s700, introducing clean water, continuously stirring for a certain time until sewage in the blending tank is fully mixed, completing sewage blending, and introducing the sewage blended in the blending tank into a finished product tank through a pipeline.
Further, the specific steps of obtaining the sewage density ρ by using the buoyancy value F change of the measuring block in the sewage in the step 300 are as follows:
s301, when the measuring block is submerged by sewage in the allocation tank, the measuring block is subjected to buoyancy F generated by the sewage and bottom tension F of the measuring block1And the self gravity G of the measuring block keeps a suspension state, and the buoyancy of the measuring block in the state is as follows:
F＝F1+G；
s302, according to a basic buoyancy calculation formula F ═ rho gVRow boardThe density of the sewage obtained by calculation is as follows:
wherein F ═ F1+ G, G is the gravity acceleration of the current position of the blending pool, VRow boardDischarging the volume of sewage for the measurement block; the volume V of the measuring block discharging the sewage is measured because the measuring block is suspended in the sewageRow boardThe volume V of the measuring block is equal to the volume V of the measuring block, and the density of the sewage obtained by final calculation is as follows:
further, in the step S400, the sewage density rho and the sewage volume V in the pool are adjusted1Calculating to obtain the mass M of the sewage in the blending tank1The method comprises the following specific steps:
s401, firstly, because the interior of the blending pool is of a regular cuboid structure, the bottom surface area S of the blending pool can be obtained through measurement;
s402, detecting through a liquid level detection mechanism in a blending tank to obtain the liquid level height H of the current sewage, and calculating by using a cuboid volume formula to obtain the current sewage volume V1Comprises the following steps:
V1＝SH，
s403, utilizing the current sewage volume V in the blending tank1Calculating with sewage density rho to obtain the sewage quality M in the current allocation pool1Comprises the following steps:
further, the obtained sewage quality M is utilized in the step S5001Calculating the concentration C of the sewage in the current blending tank1The specific calculation method comprises the following steps:
wherein M is1For the current sewage quality in the blending tank, alpha is the compensation coefficient of the sewage volume in the blending tank, beta is the complete coefficient of the sewage concentration in the blending tank, V1Is the current sewage volume in the blending tank.
Further, the sewage concentration C is utilized in the step S5001Mixing with sewage to set concentration C2Calculating the mass M of clear water to be added2The specific calculation method comprises the following steps:
wherein, C1For adjusting the current sewage concentration in the tank, C2The sewage in a blending pool is blended to set concentration, M1The current sewage quality in the blending tank is obtained, the sewage quality alpha is a compensation coefficient of the sewage volume in the blending tank, and the beta is a complete coefficient of the sewage concentration in the blending tank.
Further, in the step S300, when n sewage distribution mechanisms are disposed in the distribution tank, the density values obtained by detection and calculation of the n sewage distribution mechanisms are ρ1,ρ2...ρnAnd finally calculating the density of the obtained sewage:
compared with the prior art, the invention has the following advantages:
1) the concrete sewage recovery treatment system adopts a two-stage sand-stone separation structure, can effectively reduce the loss amount of fine sand, and controls the loss amount within 5-10%, can recover 85% of fine particle materials in the total sewage discharge amount to the maximum extent, and has higher technical and economic advantages; and moreover, fine sand in the sewage is fully recovered, the content of sand and stone in the sewage is reduced, and the cleaning cost for the sewage treatment tank body is reduced.
2) According to the concrete sewage recovery and treatment system, the density of sewage in the blending pool is calculated and obtained by utilizing the principle that the hollow measuring blocks are subjected to different buoyancy forces in water bodies with different densities, the quality of clear water to be added is calculated through the water concentration, the specific concentration blending of the sewage is realized, and the sewage concentration is controlled within the range set by concrete enterprise laboratory personnel, so that the sewage is recycled, the zero emission of the sewage is realized, and the quality of concrete is guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of a concrete sewage recycling system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a distribution position of a sewage distribution mechanism in a distribution tank according to an embodiment of the present invention;
FIG. 3 is a schematic view of another distribution position of the sewage distribution mechanism in the distribution tank according to the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a sewage dispensing mechanism in a dispensing tank according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1:
referring to fig. 1-4, in this embodiment 1, a concrete sewage recycling treatment system is disclosed, which includes a sand and stone loading mechanism 1, a sand and stone separating mechanism 2, a fine sand recycling mechanism 3, a sewage blending mechanism 9, and a plurality of tank bodies, where the tank bodies include a sewage tank, a blending tank 6, a finished product tank 7, and a clarification tank 8, the clarification tank 8 injects clean water into the blending tank 6 and the sand and stone separating mechanism 2 through pipes, the sand and stone separating mechanism 2 and the fine sand recycling mechanism 3 discharge sewage into the sewage tank through pipes, the finished product tank 7 is used to store blended sewage, and in addition, stirring mechanisms 10 are disposed in the sewage tank, the blending tank 6, and the finished product tank 7, and the stirring mechanisms 10 are used to prevent sedimentation of water inside the tank body, which causes uneven water concentration.
The interior of the blending pool 6 is of a regular-shaped cuboid structure, and a liquid level detection mechanism is arranged at the upper part of the inner wall of the blending pool 6; the sewage mixing mechanism 9 is located at the bottom of the mixing tank 6, as shown in fig. 4, the sewage mixing mechanism 9 is a square box 901 with a hollow interior, the square box 901 includes a hollow measuring block 902 inside, the bottom surface of the measuring block 902 is parallel to the bottom of the square box 901, a tension sensor 903 is arranged under the measuring block 902, one end of the tension sensor 903 is fixedly connected to the middle position of the bottom surface of the measuring block 902, the other end of the tension sensor 903 is fixedly connected to the bottom surface of the square box 901, a through hole 9011 for inflow or outflow of sewage is arranged at the lower part of the square box 902, and a plurality of vent holes 9014 are arranged at the upper part of the square box 901. When sewage flows into the square box 901 from the through hole, the sewage generates buoyancy to the measuring block 902, when the measuring block 902 is suspended in the sewage, the measuring block 902 is kept static under the buoyancy action of the sewage, the tension action of the tension sensor 903 and the self gravity of the measuring block 902, the sewage density can be calculated according to the measured data of the tension sensor 903 at the moment, the sewage volume in the blending pool 6 is obtained by combining the liquid level height measured by the liquid level sensor, the current sewage concentration is further obtained by indirect calculation, the quality of the sewage needing to be added is finally obtained by calculation, and the effect of large-batch blending is achieved.
In addition, as a plurality of groups of stirring mechanisms 10 are uniformly distributed in the blending tank for achieving a uniform blending effect, sewage flows in the blending tank under the action of the stirring mechanisms 10 in the blending process, so that the measuring block 902 is prevented from shaking in the sewage mixing and stirring process, guide columns 9021 are arranged at four corners of the bottom surface of the measuring block 902, a horizontally extending fixing plate 9012 is arranged on the inner wall of the square box 901, and guide holes 9013 matched with the guide columns are formed in the fixing plate 9012. Firstly, because the measuring block 902 is placed in the square box 901, the box will block the acting force of most water flow on the measuring block 902, and simultaneously the through hole at the lower part of the box will keep the mixing of the interior of the box and the sewage of the blending tank, and the acting force applied to the tension sensor can be ensured to be perpendicular to the bottom surface of the measuring block through the matching of the guide post and the guide hole, so as to further ensure the accurate reading of the tension sensor.
Specifically, as shown in fig. 1, the wastewater tank includes a first wastewater tank 4 and a second wastewater tank 5, a first pipeline 12 is arranged between the first wastewater tank 4 and the sand-stone separation mechanism 2, and the first pipeline 12 is used for introducing wastewater separated from the sand-stone separator 2 into the first wastewater tank 4; a second pipeline 13 is arranged between the first sewage tank 4 and the fine sand recovery mechanism 3, and the second pipeline 13 is used for introducing sewage in the first sewage tank 4 into the fine sand recovery mechanism 3; a third pipeline 14 is arranged between the second sewage tank 5 and the fine sand recovery mechanism 3, the third pipeline 14 is used for introducing sewage separated by the fine sand recovery mechanism 3 into the second sewage tank 5, a fourth pipeline 11 is arranged between the clarification tank 8 and the sand-stone separation mechanism 2, and the fourth pipeline 11 is used for introducing clean water in the clarification tank 8 into the sand-stone separation mechanism 2. The aforesaid has adopted two-stage separation structure, can separate the screening with the stone of large granule in the concrete through grit separating mechanism, contains a large amount of silt in the sewage after the first screening, and sewage concentration is higher, need retrieve the fine sand of granule after the fine sand recovery mechanism separates the screening, and concentration reduces by a wide margin in the sewage after screening once more this moment, compares the sewage that has not screened this moment, and allotment efficiency is higher.
In addition, as shown in fig. 2-3, a set of sewage allocation mechanisms 9 is respectively disposed at four corners of the bottom surface of the allocation tank 6, and further, the sewage allocation mechanisms 9 can be disposed in the allocation tank into upper and lower layers, by the above structure, the sewage allocation mechanisms 9 can detect the whole water in the allocation tank 6, a single sewage allocation mechanism can measure the water density at the current position, and by collecting values detected by the sewage allocation mechanisms distributed at different positions of the tank body, on one hand, whether the sewage in the tank body is uniformly stirred can be monitored in real time, and on the other hand, the collected data can be subjected to extreme value removal, mean value calculation and other treatments, so that more accurate water density is obtained, and the accuracy of the values is improved.
Based on the system, the concrete sewage recovery treatment embodiment also discloses a concrete sewage recovery treatment method, which comprises the following steps:
s100, the clear water of the clarification tank is introduced into a sand-stone separating mechanism, and the sand-stone separating mechanism separates and recovers sand and stone in the waste concrete: dumping waste concrete into the sand-stone separation mechanism through loading equipment, introducing clear water into the sand-stone separation mechanism through a clarification tank, screening and separating sand and stone and sewage by the sand-stone separation mechanism, recycling the sand and stone obtained by separation, and discharging the sewage obtained by separation into a first sewage tank;
s200, recycling and reusing the sewage in the first sewage tank: sewage in the first sewage tank is introduced into the fine sand separation mechanism through a pipeline, the fine sand separation mechanism centrifugally separates fine sand and sewage, the fine sand obtained by separation is recycled, and the sewage obtained by separation is discharged into a second sewage tank;
s300, recycling and reusing the sewage in the second sewage tank: sewage in the second sewage tank is introduced into the allocation tanks through pipelines, each sewage allocation mechanism is provided with a measuring block, and the density rho of the sewage in the allocation tanks is calculated by obtaining the numerical change of the buoyancy F of the measuring blocks in the sewage;
more specifically, the specific steps of obtaining the sewage density rho by using the buoyancy F value change of the measuring block in the sewage are as follows:
s301, when the measuring block is submerged by sewage in the allocation tank, the measuring block is subjected to buoyancy F generated by the sewage and bottom tension F of the measuring block1And the self gravity G of the measuring block keeps a suspension state, and the buoyancy of the measuring block in the state is as follows:
F＝F1+G；
s302, according to a basic buoyancy calculation formula F ═ rho gVRow boardThe density of the sewage obtained by calculation is as follows:
wherein F ═ F1+ G, G is the gravity acceleration of the current position of the blending pool, VRow boardDischarging the volume of sewage for the measurement block; the volume V of the measuring block discharging the sewage is measured because the measuring block is suspended in the sewageRow boardThe volume V of the measuring block is equal to the volume V of the measuring block, and the density of the sewage obtained by final calculation is as follows:
further, to ensure blendingThe monitoring value of the sewage density in the pool is accurate, n sewage distribution mechanisms are arranged in the distribution pool, and the density values detected and calculated by the n sewage distribution mechanisms are respectively rho1,ρ2...ρnAnd finally calculating the density of the obtained sewage:
s400, detecting the height change of the sewage level H through a liquid level detection mechanism in the blending tank, and calculating to obtain the sewage volume V in the blending tank1By adjusting the sewage density P and the sewage volume V in the pool1Calculating to obtain the mass M of the sewage in the blending tank1。
More specifically, in step S400, the sewage density ρ and the sewage volume V in the pool are adjusted1Calculating to obtain the mass M of the sewage in the blending tank1The method comprises the following specific steps:
s401, firstly, because the interior of the allocation pool is of a regular cuboid structure, the area S of the bottom surface of the allocation pool can be obtained through measurement,
s402, detecting through a liquid level detection mechanism in a blending tank to obtain the liquid level height H of the current sewage, and calculating by using a cuboid volume formula to obtain the current sewage volume V1Comprises the following steps:
V1＝SH，
s403, utilizing the current sewage volume V in the blending tank1Calculating with sewage density rho to obtain the sewage quality M in the current allocation pool1Comprises the following steps:
s500, utilizing the obtained sewage quality M1Calculating the concentration C of the sewage in the current blending tank1According to the current concentration C of the sewage tank1Mixing with sewage to set concentration C2Calculating the mass M of the clear water to be added2；
Specifically, the mass M of the sewage obtained in step S500 is utilized1Calculating a current deploymentConcentration C of wastewater in the tank1The specific calculation method comprises the following steps:
wherein M is1For the current sewage quality in the blending tank, alpha is the compensation coefficient of the sewage volume in the blending tank, beta is the complete coefficient of the sewage concentration in the blending tank, V1Is the current sewage volume in the blending tank.
It should be noted that when sewage is added into the allocation tank in the water pump and the pipeline, a water body shakes, and the actually detected liquid level height value fluctuates, so that the sewage volume can be accurately calculated by adding the compensation coefficient alpha, the sewage volume in the allocation tank can be compensated, and the compensation coefficient alpha can be determined through multiple equipment tests; in addition, due to various equipment errors in the blending process, the quality of the actually added clear water in the blending pool has certain deviation from a theoretical value, and in order to ensure that the concentration of the blended sewage is kept in a specified concentration range, a safety coefficient beta is increased and can be obtained through multiple times of equipment debugging.
The sewage concentration C is utilized in the step S5001Mixing with sewage to set concentration C2Calculating the mass M of clear water to be added2The specific calculation method comprises the following steps:
wherein, C1For adjusting the current sewage concentration in the tank, C2The sewage in a blending pool is blended to set concentration, M1The current sewage quality in the blending tank is obtained, the sewage quality alpha is a compensation coefficient of the sewage volume in the blending tank, and the beta is a complete coefficient of the sewage concentration in the blending tank.
S600, clear water in the clarification tank is pumped through a water pump, the quality of the clear water injected into the blending tank is monitored by using a flowmeter until the clear water injected into the blending tank reaches M2When the water pump stops pumping water and the filling process is finished, the stirring in the mixing tankThe mixer continuously stirs.
S700, introducing clean water, continuously stirring for a certain time until sewage in the blending tank is fully mixed, completing sewage blending, and introducing the sewage blended in the blending tank into a finished product tank through a pipeline.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides a concrete sewage recovery processing system, includes grit loading mechanism, grit separating mechanism, fine sand recovery mechanism, sewage allocation mechanism and a plurality of cell body, wherein the cell body includes effluent water sump, allotment pond, finished product pond and depositing reservoir, the depositing reservoir pours into the clear water into respectively in allotment pond and grit separating mechanism through the pipeline, grit separating mechanism and fine sand recovery mechanism drain into sewage through the pipeline in to the effluent water sump, the finished product pond is used for depositing the sewage of allotting, all be equipped with rabbling mechanism, characterized in that in effluent water sump, allotment pond and the finished product pond:
the sewage pool comprises a first sewage pool and a second sewage pool, a first pipeline is arranged between the first sewage pool and the sand-stone separating mechanism, and the first pipeline is used for introducing sewage separated from the sand-stone separator into the first sewage pool; a second pipeline is arranged between the first sewage tank and the fine sand recovery mechanism and is used for introducing sewage in the first sewage tank into the fine sand recovery mechanism; a third pipeline is arranged between the second sewage tank and the fine sand recovery mechanism, the third pipeline is used for introducing sewage separated by the fine sand recovery mechanism into the second sewage tank, a fourth pipeline is arranged between the clarification tank and the sand-stone separation mechanism, the fourth pipeline is used for introducing clean water in the clarification tank into the sand-stone separation mechanism,
the interior of the blending pool is of a regular-shaped cuboid structure, and a liquid level detection mechanism is arranged at the upper part of the inner wall of the blending pool; the sewage blending mechanism is positioned at the bottom of the blending tank and adopts a square box body with a hollow interior, a hollow measuring block is arranged in the square box body, the bottom surface of the measuring block is parallel to the bottom of the box body, a tension sensor is arranged right below the measuring block, one end of the tension sensor is fixedly connected with the middle position of the bottom surface of the measuring block, the other end of the tension sensor is fixedly connected with the bottom surface of the square box body, a through hole for sewage to flow in or out is formed in the lower part of the square box body, and a plurality of vent holes are formed in the upper part of the square box body; guide posts are arranged at four corners of the bottom surface of the measuring block, a horizontally extending fixing plate is arranged on the inner wall of the square box body, and guide holes matched with the guide posts are formed in the fixing plate; the bottom surface four corners position of allotment pond is provided with a set of sewage allocation mechanism respectively, sets up sewage allocation mechanism into upper and lower two-layer in the allotment pond.
2. A concrete sewage recovery processing method using the concrete sewage recovery processing system according to claim 1, comprising the steps of:
s100, the clear water of the clarification tank is introduced into a sand-stone separating mechanism, and the sand-stone separating mechanism separates and recovers sand and stone in the waste concrete: dumping waste concrete into the sand-stone separation mechanism through loading equipment, introducing clear water into the sand-stone separation mechanism through a clarification tank, screening and separating sand and stone and sewage by the sand-stone separation mechanism, recycling the sand and stone obtained by separation, and discharging the sewage obtained by separation into a first sewage tank;
s200, recycling and reusing the sewage in the first sewage tank: sewage in the first sewage tank is introduced into the fine sand separation mechanism through a pipeline, the fine sand separation mechanism centrifugally separates fine sand and sewage, the fine sand obtained by separation is recycled, and the sewage obtained by separation is discharged into a second sewage tank;
s300, recycling and reusing the sewage in the second sewage tank: sewage in the second sewage tank is introduced into the allocation tank through a pipeline, a measuring block is arranged in the sewage allocation mechanism, and the density rho of the sewage in the allocation tank is calculated by obtaining the numerical change of the buoyancy F of the measuring block in the allocation tank in the sewage;
s400, detecting the height change of the sewage level H through a liquid level detection mechanism in the blending tank, and calculating to obtain the sewage volume V in the blending tank1By adjusting the sewage density P and the sewage volume V in the pool1Calculating to obtain the mass M of the sewage in the blending tank1；
S500, utilizing the obtained sewage quality M1Calculating the concentration C of the sewage in the current blending tank1According to the current concentration C of the sewage tank1Mixing with sewage to set concentration C2Calculating the mass M of the clear water to be added2；
S600, clear water in the clarification tank is pumped through a water pump, the quality of the clear water injected into the blending tank is monitored by using a flowmeter until the quality of the clear water injected into the blending tank reaches M2The water pump stops pumping water, and in the filling process, the stirring mechanism in the blending pool continuously stirs;
s700, introducing clean water, continuously stirring for a certain time until sewage in the blending tank is fully mixed, completing sewage blending, and introducing the sewage blended in the blending tank into a finished product tank through a pipeline.
3. The concrete sewage recovery processing method according to claim 2, characterized in that: the specific steps of obtaining the sewage density rho by using the buoyancy F value change of the measuring block in the sewage in the step 300 are as follows:
s301, when the measuring block is submerged by sewage in the allocation tank, the measuring block is subjected to buoyancy F generated by the sewage and bottom tension F of the measuring block1And the self gravity G of the measuring block keeps a suspension state, and the buoyancy of the measuring block in the state is as follows:
F＝F1+G；
s302, according to a basic buoyancy calculation formula F ═ rho gVRow boardThe density of the sewage obtained by calculation is as follows:
wherein F ═ F1+ G, G isThe gravity acceleration, V, of the current position of the blending tankRow boardDischarging the volume of sewage for the measurement block; the volume V of the measuring block discharging the sewage is measured because the measuring block is suspended in the sewageRow boardThe volume V of the measuring block is equal to the volume V of the measuring block, and the density of the sewage obtained by final calculation is as follows:
4. the concrete sewage recovery processing method according to claim 3, characterized in that: in the step S400, the sewage density rho and the sewage volume V in the pool are adjusted1Calculating to obtain the mass M of the sewage in the blending tank1The method comprises the following specific steps:
s401, firstly, because the interior of the blending pool is of a regular cuboid structure, the bottom surface area S of the blending pool can be obtained through measurement;
s402, detecting through a liquid level detection mechanism in a blending tank to obtain the liquid level height H of the current sewage, and calculating by using a cuboid volume formula to obtain the current sewage volume V1Comprises the following steps:
V1＝SH，
s403, utilizing the current sewage volume V in the blending tank1Calculating with sewage density rho to obtain the sewage quality M in the current allocation pool1Comprises the following steps:
5. the concrete sewage recovery processing method according to claim 4, wherein: the quality M of the sewage obtained in the step S500 is utilized1Calculating the concentration C of the sewage in the current blending tank1The specific calculation method comprises the following steps:
wherein M is1For the current sewage quality in the blending tank, alpha is the compensation coefficient of the sewage volume in the blending tank, beta is the complete coefficient of the sewage concentration in the blending tank, V1Is the current sewage volume in the blending tank.
6. The concrete sewage recovery processing method according to claim 5, characterized in that: the step S500 utilizes the sewage concentration C1Mixing with sewage to set concentration C2Calculating the mass M of clear water to be added2The specific calculation method comprises the following steps:
wherein, C1For adjusting the current sewage concentration in the tank, C2The sewage in a blending pool is blended to set concentration, M1The current sewage quality in the blending tank is obtained, the sewage quality alpha is a compensation coefficient of the sewage volume in the blending tank, and the beta is a complete coefficient of the sewage concentration in the blending tank.
7. The concrete sewage recovery processing method according to claim 6, characterized in that: in the step S300, when n sewage distribution mechanisms are disposed in the distribution tank, the density values obtained by detection and calculation of the n sewage distribution mechanisms are ρ1,ρ2...ρnAnd finally calculating the density of the obtained sewage:
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