CN214611932U - Oil separation and separation system for waste concrete slurry and waste water - Google Patents

Abstract

The utility model discloses a concrete waste slurry wastewater oil separation and separation system, which comprises a collecting tank, a sand-stone separator, a first stirring tank, a sampling tank, a filter press, a collecting tank, a separator, a first activated carbon adsorption tank, a second activated carbon adsorption tank, a clean water tank, an adsorption tower, a crusher, a discharging tank and a second stirring tank; the waste slurry and the waste water in the collecting tank are discharged into a first stirring tank after passing through a sand-stone separator, and then the slurry in the first stirring tank is sent to a filter press for pressure filtration to obtain filter residue and filtrate; crushing the filter residue, and preparing mixed slurry in a second stirring tank; and the filtrate is sequentially treated by a separator, a first activated carbon adsorption tank or a second activated carbon adsorption tank to obtain clear water, one part of the clear water is sent to the adsorption tower, the other part of the clear water is sent to a second stirring tank, and the rest part of the clear water is sent to a cleaning water pipe network. The utility model discloses can carry out effective processing to useless thick liquid waste water, solve because of the useless thick liquid basicity of waste water is big and contain the organic matter and lead to being difficult to the problem handled.

Description

Oil separation and separation system for waste concrete slurry and waste water

Technical Field

The utility model relates to a concrete waste pulp waste water oil removal piece-rate system belongs to concrete waste water treatment technical field.

Background

The concrete is artificial stone which is prepared by taking cement as a main cementing material, mixing water, sand, stones and chemical additives and mineral admixtures as necessary according to a proper proportion, uniformly stirring, densely forming, curing and hardening, and is widely applied to civil and industrial building construction. In recent years, with the continuous acceleration of the urbanization process of China, the concrete industry is developed vigorously. However, the concrete may produce a large amount of waste water and waste residues in the production process, such as residual concrete on a concrete truck and a main mixer, residual concrete left under a mixing plant and left after delivery detection and sampling of the concrete, waste liquid after cleaning equipment such as a concrete truck and a main mixer, and the like. According to the measurement and calculation, the waste water and the waste slurry generated in the production process of the mixing plant reach 3% of the concrete yield, the mixing plant which produces 100 ten thousand cubic meters per year generates 3 ten thousand cubic meters of waste materials, the waste slurry treatment system of the existing concrete plant area generally adopts the methods of precipitation, filter pressing and the like for treatment, and simultaneously filter mud after filter pressing is used for replacing partial cement in the concrete, so that the performance of the concrete is improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a concrete waste slurry waste water oil removal piece-rate system to the not enough of existence among the prior art, can carry out the effective processing to the waste water waste slurry that produces among the concrete production process, solve because of waste water waste slurry basicity is big and contain the organic matter and lead to being difficult to the problem of handling.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a concrete waste slurry wastewater oil separation and separation system comprises a collecting tank, a sand-stone separator, a first stirring tank, a sampling tank, a filter press, a collecting tank, a separator, a first activated carbon adsorption tank, a second activated carbon adsorption tank, a clean water tank, an adsorption tower, a crusher, a discharge tank and a second stirring tank; the collecting tank is connected with a sand-stone separator, the sand-stone separator is used for separating and recycling sand and stone in the waste slurry, and the treated waste slurry is discharged into a first stirring tank; one part of the slurry in the first stirring tank is sent to a filter press through a slurry pump for filter pressing, and the rest part of the slurry is sent to a sampling tank; the outlet of the sampling tank is connected with the first stirring tank; the filter press is used for carrying out filter pressing on the slurry, the obtained filter residue is sent to the crusher, and the obtained filtrate is discharged into the liquid collecting tank; the pulverizer is used for pulverizing the filter residue and conveying the pulverized filter residue to a discharge tank; the outlet of the discharging tank is connected with the second stirring tank; the filtrate of the liquid collecting tank is conveyed to a separator through a pump; a liquid outlet of the separator is respectively connected with liquid inlets of the first activated carbon adsorption tank and the second activated carbon adsorption tank; the inlet of the clean water tank is respectively connected with the liquid outlets of the first activated carbon adsorption tank and the second activated carbon adsorption tank; one part of clear liquid in the clear water tank is sent to the adsorption tower through a pump for adsorbing carbon dioxide, the other part of clear liquid is sent to the second stirring tank for mixing with the crushed filter residue to prepare mixed slurry, and the rest part of clear liquid is sent to a cleaning water pipe network; the carbonic acid solution at the bottom of the adsorption tower is sent to a first stirring tank by a pump.

The working process of the concrete waste slurry wastewater oil separation and separation system is as follows:

collecting waste slurry and waste water from a concrete production plant area through a collecting tank, separating and recycling sand and stone through a sand-stone separator, discharging the treated slurry into a first stirring tank, sending part of the slurry in the first stirring tank into a sampling tank, arranging a pH probe in the sampling tank for pH detection to obtain the pH value of the slurry in the first stirring tank, adding a carbonic acid solution obtained in an adsorption tower for pH regulation to reduce the alkalinity of the slurry, sending the slurry to a filter press for filter-pressing separation to obtain filtrate and filter residue, sending the filtrate to a separator for separation to remove small-particle impurities, adsorbing and removing organic matters through a first activated carbon adsorption tank or a second activated carbon adsorption tank, connecting the first activated carbon adsorption tank and the second activated carbon adsorption tank in parallel, and desorbing the other when one is subjected to adsorption treatment, the two activated carbon adsorption tanks are alternately used, so that the process can be carried out uninterruptedly; part of the clear water obtained by the activated carbon adsorption treatment can be sent to an adsorption tower for adsorbing carbon dioxide to prepare a carbonic acid solution, the other part of the clear water can be sent to a stirring tank for mixing with the crushed filter residue to prepare a mixed slurry, and the rest of the clear water is sent to a cleaning water pipe network for providing cleaning water for each device or tank car; filter residues obtained by filter pressing are crushed and then enter a material placing tank, then the material placing tank quantitatively puts the filter residues into a second stirring tank, clear water after activated carbon adsorption treatment is added into the second stirring tank to be mixed and prepared into slurry for concrete mixing, and the slurry is poor in concrete workability and reduced in concrete compactness due to the fact that the recovery peak time of the waste slurry and the waste water is different from the production peak time of the concrete, the slurry with the high solid content is added into the concrete to increase insoluble substances in small particles, the original concrete ratio is influenced, and the compactness of the concrete is reduced, so that the slurry is obtained by filter pressing the waste slurry and the waste water firstly, and then the solid content of the slurry is adjusted by controlling the adding amount of the filter residues and the clear water to obtain the slurry suitable for concrete mixing without being influenced by the solid content change of the collected waste slurry, thereby greatly reducing the use difficulty of the waste slurry and effectively controlling the quality of the mixed concrete.

Further, the separator is any one of a cyclone separator, a spiral separator and a drum screen separator.

Further, a pH measuring device is arranged on the sampling tank, and the pH measuring device comprises a shell, a motor, a pH probe, a rotating shaft and a stirring blade; the shell is fixed at the top of the sampling tank; the motor is fixed at the top of the shell, a crankshaft of the motor extends into the shell, and a gear I is arranged on the crankshaft; a groove is formed in the bottom surface of the inner part of the machine shell, the groove is positioned on one side of the machine shaft, a sliding block is arranged in the groove, and the sliding block can rotate relative to the groove; the rotating shaft is hollow, one end of the rotating shaft penetrates through the top of the shell and is connected with the shell through a bearing, the other end of the rotating shaft penetrates through the sliding block, the bottom surface of the shell and the top of the sampling tank in sequence and extends into the sampling tank, the rotating shaft is fixedly connected with the sliding block, and the rotating shaft and the sliding block rotate coaxially; the pH probe penetrates through the rotating shaft and extends to the middle lower part of the sampling tank; the stirring blades are of an inverted L-shaped structure, the short edges of the stirring blades are fixedly connected with the outer wall of the end part of the rotating shaft, and the number of the stirring blades is more than 2 and the stirring blades are uniformly distributed around the pH probe; and a gear II is arranged on the rotating shaft and is meshed with the gear I. The motor rotates the spindle, drives the pivot through engaged gear I and gear II and rotates, the stirring leaf rotates slowly along with the pivot and stirs thick liquids around the pH probe, makes the thick liquids be difficult for the deposit on the pH probe, influences the detection effect of pH probe.

Further, the lower part of sample jar is equipped with the export of sample jar, the upper portion of sample jar is equipped with the import of sample jar, the inside of sample jar is equipped with the dog, the dog be located the import of sample jar with between the pH probe, the dog is right angle trapezoidal body, the lower bottom surface of dog is connected with the top of sample jar, the inclined plane and the import of sample jar of dog are relative. The dog can effectively protect the pH probe for thick liquids can not erode the pH probe when entering from the sample jar import.

Furthermore, a solenoid valve is arranged on a pipeline for conveying the carbonic acid solution to the first stirring tank, the solenoid valve is connected with a central control system, and the central control system is also connected with a pH probe. The central control system receives a detection signal from the pH probe to obtain pH data of the slurry in the first stirring tank, and then adjusts the amount of the carbonic acid solution added into the first stirring tank by controlling the opening and closing of the electromagnetic valve, so as to adjust the pH value of the slurry in the first stirring tank.

Compared with the prior art, the technical scheme has the following beneficial effects:

1. the utility model discloses can carry out the effective processing to the waste water and the useless thick liquid that produce in the concrete production process to adjust the pH value of useless thick liquid, reduce its basicity and be convenient for recycle, carry out activated carbon adsorption to the waste water after the filter-pressing simultaneously and detach the organic matter, the clear water that obtains is used for equipment again and washs, or adjusts the pH value of useless thick liquid and prepares new interpolation thick liquids, can not bring organic matter and other impurity into again.

2. The utility model is simple in operation, the controllability is strong, is fit for scale, automatic useless thick liquid waste water treatment.

Drawings

FIG. 1 is a process flow diagram of the oil-separating system for waste concrete slurry and wastewater according to example 1.

Fig. 2 is a schematic structural diagram of the sampling tank according to embodiment 2.

Reference numerals: 1-sampling tank, 2-sampling tank outlet, 3-sampling tank inlet, 4-stop block, 5-machine shell, 6-motor, 61-machine shaft, 62-gear I, 7-pH probe, 8-groove, 9-rotating shaft, 91-slide block, 92-gear II, 93-stirring blade.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, but the present invention is not limited to the examples. The specific experimental conditions and methods not indicated in the following examples are generally conventional means well known to those skilled in the art.

Example 1:

as shown in the attached figure 1, the oil separation and separation system for the waste concrete slurry and the wastewater comprises a collecting tank, a sand-stone separator, a first stirring tank, a sampling tank 1, a filter press, a collecting tank, a cyclone separator, a first activated carbon adsorption tank, a second activated carbon adsorption tank, a clean water tank, an adsorption tower, a pulverizer, a discharging tank and a second stirring tank; the collecting tank is connected with a sand-stone separator, the sand-stone separator is used for separating and recycling sand and stone in the waste slurry, and the treated waste slurry is discharged into a first stirring tank; a part of the slurry in the first stirring tank is sent to a filter press by a slurry pump for filter pressing, and the rest part of the slurry is sent to a sampling tank 1; a sampling tank outlet 2 of the sampling tank 1 is connected with a first stirring tank; the filter press is used for carrying out filter pressing on the slurry, the obtained filter residue is sent to the crusher, and the obtained filtrate is discharged into the liquid collecting tank; the pulverizer is used for pulverizing the filter residue and conveying the pulverized filter residue to a discharge tank; the outlet of the discharging tank is connected with the second stirring tank; the filtrate in the liquid collecting tank is sent to a cyclone separator through a pump; the liquid outlet of the cyclone separator is respectively connected with the liquid inlets of the first activated carbon adsorption tank and the second activated carbon adsorption tank; the inlet of the clean water tank is respectively connected with the liquid outlets of the first activated carbon adsorption tank and the second activated carbon adsorption tank; one part of clear liquid in the clear water tank is sent to the adsorption tower through a pump for adsorbing carbon dioxide, the other part of clear liquid is sent to the second stirring tank for mixing with the crushed filter residue to prepare mixed slurry, and the rest part of clear liquid is sent to a cleaning water pipe network; the carbonic acid solution at the bottom of the adsorption tower is sent to a first stirring tank by a pump.

The use method of the concrete waste slurry wastewater oil separation and separation system comprises the following steps:

collecting waste slurry and waste water from a concrete production plant area through a collecting tank, firstly separating and recycling sand and stone through a sand-stone separator, then discharging the treated slurry into a first stirring tank, sending part of the slurry in the first stirring tank into a sampling tank 1, arranging a pH probe 7 in the sampling tank 1 for pH detection to obtain the pH value of the slurry in the first stirring tank, then adding a carbonic acid solution obtained in an adsorption tower for pH regulation to reduce the alkalinity of the slurry, then sending the slurry to a filter press for filter-press separation to obtain filtrate and filter residue, then sending the filtrate to a separator for separation to remove small-particle impurities, then adsorbing and removing organic matters through a first activated carbon adsorption tank or a second activated carbon adsorption tank, wherein the first activated carbon adsorption tank and the second activated carbon adsorption tank are arranged in parallel, and when one is subjected to adsorption treatment, the other is subjected to desorption treatment, the two activated carbon adsorption tanks are alternately used, so that the process can be carried out uninterruptedly; part of the clear water obtained by the activated carbon adsorption treatment can be sent to an adsorption tower for adsorbing carbon dioxide to prepare a carbonic acid solution, the other part of the clear water can be sent to a stirring tank for mixing with the crushed filter residue to prepare a mixed slurry, and the rest of the clear water is sent to a cleaning water pipe network for providing cleaning water for each device or tank car; and crushing filter residues obtained through filter pressing, putting the crushed filter residues into a material placing tank, then quantitatively putting the filter residues into a second stirring tank by the material placing tank, and adding clear water subjected to activated carbon adsorption treatment into the second stirring tank to mix and prepare slurry for concrete mixing.

Example 2:

the difference from the embodiment 1 is that the separator is a drum screen separator; as shown in fig. 2, a pH measuring device is arranged on the sampling tank 1, and the pH measuring device comprises a casing 5, a motor 6, a pH probe 7, a rotating shaft 9 and a stirring blade 93; the shell 5 is fixed on the top of the sampling tank 1; the motor 6 is fixed on the top of the machine shell 5, a crankshaft 61 of the motor 6 extends into the machine shell 5, and a gear I62 is arranged on the crankshaft 61; a groove 8 is arranged on the bottom surface of the inside of the machine shell 5, the groove 8 is positioned on one side of the crankshaft 61, a sliding block 91 is arranged in the groove 8, and the sliding block 91 can rotate relative to the groove 8; the rotating shaft 9 is hollow, one end of the rotating shaft penetrates through the top of the machine shell 5 and is connected with the machine shell 5 through a bearing, the other end of the rotating shaft penetrates through the sliding block 91, the bottom surface of the machine shell 5 and the top of the sampling tank 1 in sequence and extends into the sampling tank 1, the rotating shaft 9 is fixedly connected with the sliding block 91, and the rotating shaft 9 and the sliding block 91 rotate coaxially; the pH probe 7 extends to the middle lower part of the sampling tank 1 through a rotating shaft 9; the stirring blades 93 are of an inverted L-shaped structure, the short edges of the stirring blades are fixedly connected with the outer wall of the end part of the rotating shaft 9, and the number of the stirring blades 93 is 4 and the stirring blades are uniformly distributed around the pH probe 7; and a gear II 92 is arranged on the rotating shaft 9, and the gear II 92 is meshed with the gear I62. The motor 6 rotates the crankshaft 61, the rotating shaft 9 is driven to rotate through the meshed gear I62 and the meshed gear II 92, the stirring blade 93 rotates slowly along with the rotating shaft 9 and stirs slurry around the pH probe 7, so that the slurry is not easy to deposit on the pH probe 7, and the detection effect of the pH probe 7 is influenced;

the lower part of sample jar 1 is equipped with sample jar export 2, the upper portion of sample jar 1 is equipped with sample jar import 3, the inside of sample jar 1 is equipped with dog 4, dog 4 be located sample jar import 3 with between the pH probe 7, dog 4 is right angle trapezoidal body, the lower bottom surface of dog 4 is connected with sample jar 1's top, the inclined plane of dog 4 is relative with sample jar import 3. The stopper 4 can effectively protect the pH probe 7 so that the pH probe 7 is not washed when slurry enters from the inlet 3 of the sampling tank.

The application method of the concrete waste slurry wastewater oil separation and separation system in the embodiment is the same as that in the embodiment 1.

Example 3:

the difference from the embodiment 2 is that a solenoid valve is arranged on a pipeline for conveying the carbonic acid solution to the first stirring tank, and the solenoid valve is connected with a central control system which is also connected with a pH probe 7. The central control system receives a detection signal from the pH probe 7 to obtain pH data of the slurry in the first stirring tank, and then adjusts the amount of the carbonic acid solution added into the first stirring tank by controlling the opening and closing of the electromagnetic valve, so as to adjust the pH value of the slurry in the first stirring tank. The central control system may be established based on a PLC.

The application method of the concrete waste slurry wastewater oil separation and separation system in the embodiment is the same as that in the embodiment 2.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (5)

1. The utility model provides a concrete waste slurry waste water oil removal piece-rate system which characterized in that: comprises a collecting tank, a sand separator, a first stirring tank, a sampling tank (1), a filter press, a liquid collecting tank, a separator, a first activated carbon adsorption tank, a second activated carbon adsorption tank, a clean water tank, an adsorption tower, a pulverizer, a discharging tank and a second stirring tank; the collecting tank is connected with a sand-stone separator, the sand-stone separator is used for separating and recycling sand and stone in the waste slurry, and the treated waste slurry is discharged into a first stirring tank; a part of the slurry in the first stirring tank is sent to a filter press by a slurry pump for filter pressing, and the rest of the slurry is sent to a sampling tank (1); a sampling tank outlet (2) of the sampling tank (1) is connected with a first stirring tank; the filter press is used for carrying out filter pressing on the slurry, the obtained filter residue is sent to the crusher, and the obtained filtrate is discharged into the liquid collecting tank; the pulverizer is used for pulverizing the filter residue and conveying the pulverized filter residue to a discharge tank; the outlet of the discharging tank is connected with the second stirring tank; the filtrate of the liquid collecting tank is conveyed to a separator through a pump; a liquid outlet of the separator is respectively connected with liquid inlets of the first activated carbon adsorption tank and the second activated carbon adsorption tank; the inlet of the clean water tank is respectively connected with the liquid outlets of the first activated carbon adsorption tank and the second activated carbon adsorption tank; one part of clear liquid in the clear water tank is sent to the adsorption tower through a pump for adsorbing carbon dioxide, the other part of clear liquid is sent to the second stirring tank for mixing with the crushed filter residue to prepare mixed slurry, and the rest part of clear liquid is sent to a cleaning water pipe network; the carbonic acid solution at the bottom of the adsorption tower is sent to a first stirring tank by a pump.

2. The concrete waste slurry and wastewater oil separation and separation system according to claim 1, characterized in that: the separator is any one of a cyclone separator, a spiral separator and a rotary screen separator.

3. The concrete waste slurry and wastewater oil separation and separation system according to claim 1, characterized in that: a pH measuring device is arranged on the sampling tank (1), and the pH measuring device comprises a machine shell (5), a motor (6), a pH probe (7), a rotating shaft (9) and a stirring blade (93); the shell (5) is fixed at the top of the sampling tank (1); the motor (6) is fixed at the top of the machine shell (5), a crankshaft (61) of the motor (6) extends into the machine shell (5), and a gear I (62) is arranged on the crankshaft (61); a groove (8) is formed in the bottom surface of the inner part of the shell (5), the groove (8) is positioned on one side of the crankshaft (61), a sliding block (91) is arranged in the groove (8), and the sliding block (91) can rotate relative to the groove (8); the rotating shaft (9) is hollow, one end of the rotating shaft penetrates through the top of the machine shell (5) and is connected with the machine shell (5) through a bearing, the other end of the rotating shaft penetrates through the sliding block (91), the bottom surface of the machine shell (5) and the top of the sampling tank (1) in sequence and extends into the sampling tank (1), the rotating shaft (9) is fixedly connected with the sliding block (91), and the rotating shaft (9) and the sliding block (91) rotate coaxially; the pH probe (7) penetrates through the rotating shaft (9) and extends to the middle lower part of the sampling tank (1); the stirring blades (93) are of an inverted L-shaped structure, the short edges of the stirring blades are fixedly connected with the outer wall of the end part of the rotating shaft (9), and the number of the stirring blades (93) is more than 2 and the stirring blades are uniformly distributed around the pH probes (7); and a gear II (92) is arranged on the rotating shaft (9), and the gear II (92) is meshed with the gear I (62).

4. The concrete waste slurry and wastewater oil separation and separation system according to claim 3, wherein: the lower part of sample jar (1) is equipped with sample jar export (2), the upper portion of sample jar (1) is equipped with sample jar import (3), the inside of sample jar (1) is equipped with dog (4), dog (4) be located sample jar import (3) with between pH probe (7), dog (4) are right angle trapezoidal body, the lower bottom surface of dog (4) is connected with the top of sample jar (1), the inclined plane and the sample jar import (3) of dog (4) are relative.

5. The concrete waste slurry and wastewater oil separation and separation system according to claim 1, characterized in that: and an electromagnetic valve is arranged on a pipeline for conveying the carbonic acid solution to the first stirring tank, the electromagnetic valve is connected with a central control system, and the central control system is also connected with a pH probe (7).

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