CN113307406B - High-efficient separation enrichment facility of stirring station waste slurry water - Google Patents

High-efficient separation enrichment facility of stirring station waste slurry water Download PDF

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Publication number
CN113307406B
CN113307406B CN202110622009.6A CN202110622009A CN113307406B CN 113307406 B CN113307406 B CN 113307406B CN 202110622009 A CN202110622009 A CN 202110622009A CN 113307406 B CN113307406 B CN 113307406B
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China
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waste slurry
cylinder
water
concentration
collecting cavity
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CN113307406A (en
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高育欣
马建峰
吴雄
高达
涂玉林
杨文�
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Building Materials Science Research Institute Co Ltd of China West Construction Group Co Ltd
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Building Materials Science Research Institute Co Ltd of China West Construction Group Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention discloses a high-efficiency separation and concentration device for waste slurry and water in a mixing plant. Comprises a grading feeding device and a concentration device which are communicated; the grading feeding device is provided with an air inlet and a waste slurry inlet; gas and waste slurry entering from the air inlet and the waste slurry inlet can form rotational flow in the grading feeding device; the concentration device comprises a cylinder body; a filter pressing device is arranged at the top of the cylinder body, and a material collecting cavity positioned below the filter pressing device is arranged in the cylinder body; the bottom of the material collecting cavity is provided with a bottom flow port, and an anti-blocking device is arranged at the bottom flow port. The invention can effectively treat the waste slurry in time, and can separate clear water for circulating water of the mixing station while improving the concentration of the waste slurry in the mixing station, thereby reducing the water demand of the mixing station. In addition, the occupied area of the used equipment is small, the function of the existing sedimentation tank is completely replaced, and the clean treatment process of the waste slurry water of the mixing plant is realized.

Description

High-efficient separation enrichment facility of stirring station waste slurry water
Technical Field
The invention belongs to the technical field of waste slurry water concentration, and particularly relates to a high-efficiency separation and concentration device for waste slurry water in a mixing plant.
Background
The waste slurry water is liquid slurry which is obtained by separating sand and stone and coarse sand from waste water, waste residue and the like generated after cleaning of relevant equipment for concrete production, transportation and construction through sand and stone separation equipment. According to statistics, the commercial concrete production rate in 2019 in China reaches 23.78 billion cubic meters, and the average annual production of nearly 1 million tons of waste slurry water. The pH value of the waste slurry is more than or equal to 11, and if the waste slurry is directly discharged without treatment, the waste slurry can cause great harm to the ecology and can not meet the requirement of environmental protection.
At present, the main treatment methods of the waste slurry water of the mixing plant comprise a precipitation filter pressing method, a homogenization method and the like. The mud cake generated after the filter pressing by the precipitation filter pressing method is directly transported and disposed, the disposal cost is high, and the reduction disposal of the waste slurry water is not favorable when the situations of supplementing clear water and the like are encountered in the disposal process of the homogenization method. The disposal methods are all provided with sedimentation tanks, require regular desilting, and bring inconvenience to production management while occupying large space. Therefore, the forming of the zero discharge treatment process of the waste slurry water of the mixing plant has important significance for concrete production enterprises.
The use of mixing station waste slurry water for concrete mixing water is one direction of zero discharge, but has some problems. The yield of the waste slurry water of the mixing plant is high, when the waste slurry water is used as the water for producing the concrete, the mixing amount is low, and when low-grade concrete is produced, the water consumption of the concrete is 160-175 kg/m 3 The coarse and fine aggregate in the mixing station contains water, after water is deducted, 1m is prepared 3 The actual water demand of the concrete is about 100 kg. The mixing amount of the waste slurry water of the existing mixing plant is about 30 percent of that of the substituted clear water, and the solid content of the waste slurry water is required to be lower, generally about 5 percent. When the solid content of the waste slurry is high, clear water needs to be supplemented to dilute the waste slurry and then the diluted waste slurry is used as concrete mixing water, so that the treatment amount is increased. In addition, the volume of concrete produced by the mixing plant every day is uncertain, and if the production volume of the mixing plant is small, the waste slurry produced by the mixing plant can not be fully utilized, and the excessive waste slurry can only be treated by pressure filtration, so that the treatment cost is increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the high-efficiency separation and concentration device for the waste slurry water of the mixing plant, which can effectively treat the waste slurry water in time, improve the concentration of the waste slurry water of the mixing plant, separate out clear water for the circulating water of the mixing plant and reduce the water demand of the mixing plant. In addition, the occupied area of the used equipment is small, the function of the existing sedimentation tank is completely replaced, and the clean treatment process of the waste slurry water of the mixing plant is realized.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows:
a high-efficiency separation and concentration device for waste slurry and water in a mixing plant comprises a grading feeding device and a concentration device which are communicated with each other; the grading feeding device is provided with an air inlet and a waste slurry inlet; gas and waste slurry entering from the air inlet and the waste slurry inlet can form rotational flow in the grading feeding device;
the concentration device comprises a cylinder body; a filter pressing device is arranged at the top of the cylinder body, and a material collecting cavity positioned below the filter pressing device is arranged in the cylinder body; the bottom of the material collecting cavity is provided with a bottom flow port, and an anti-blocking device is arranged at the bottom flow port.
Further, the grading feeding device comprises a circular cylinder and a conical cylinder; the circular cylinder is provided with an air inlet and a waste slurry inlet which feed along the tangential direction of the circular cylinder.
Further, the top end of the round barrel is communicated with a feed inlet arranged on the side wall of the concentration device through a pipeline, and a pipeline mixer is arranged between the top end of the round barrel and the feed inlet.
Furthermore, a bottom discharge hole is formed in the bottom of the conical cylinder body, and an ultrasonic anti-blocking device is arranged on the bottom of the conical cylinder body.
Further, a solid content monitor and a flow rate monitor (not shown) are provided at the bottom discharge port.
Furthermore, the solid content monitor adopts an input type ultrasonic concentration meter for monitoring, and concentration detection can provide data basis for judging the concentration effect.
Furthermore, the flow monitor adopts one or more of a differential pressure type flowmeter, a positive displacement flowmeter and an electromagnetic flowmeter for monitoring.
Further, the cylinder of the concentration device comprises a first cylinder and a second cylinder; the diameter of the first cylinder is larger than that of the second cylinder.
Furthermore, an overflow port is formed in the side wall of the second cylinder, and a material collecting cavity is formed in the second cylinder; the lateral wall of the aggregate cavity is provided with a bin wall vibrator.
Further, the bin wall vibrator is an ultrasonic vibrator or a CZ electromagnetic bin wall vibrator.
Further, a filter pressing device is arranged at the top of the first cylinder and comprises filter cloth capable of sliding along the inner wall of the second cylinder; a water collecting cavity is arranged above the filter cloth; a flow equalizing division plate is arranged in the water collection cavity; the water collecting cavity is connected with a hydraulic press arranged on the fixing frame.
Furthermore, a water suction pump is arranged at the top of the first cylinder; the water suction pump is communicated with the water collecting cavity through a connecting pipe.
Further, the anti-blocking device is an anti-blocking device which can relieve blocking through stirring, vibration or high-pressure bubbles.
Furthermore, the inner walls of the grading feeding device and the concentrating device are provided with coatings with alkali resistance, corrosion resistance and adhesion prevention.
Further, the water suction pump, the solid content monitor and the flow monitor are all connected with the control system in a conventional electric connection mode.
Further, the control system is an STM32F103 single chip microcomputer control system.
The invention has the beneficial effects that:
1. after the equipment provided by the invention is subjected to grading treatment and concentration treatment at the front end, the amount of the waste slurry water of the mixing plant can be reduced by more than 5 times, namely 100m 3 After the waste slurry water is subjected to concentration increasing equipment, the volume of the waste slurry water is not more than 20m 3
2. The waste slurry water yield peak period of the existing mixing plant is 12m 3 About/h, the concentration device is provided with a pressure filtration device, so that clear water can be ensured to underflow under the condition of a feeding peak period;
3. the yield of the waste slurry water of the stirring station is indefinite, and the particles of the waste slurry water contain unhydrated cement, cement hydration products, mineral admixture and the like, chemical reaction can occur among the particles, and the waste slurry water can block the pipeline of the device if the standing and precipitating time of the waste slurry water is longer.
4. The waste slurry after grinding can be used as a concrete cementing material, and the waste slurry water of the mixing plant contains more fine sand, so that the waste slurry water is not beneficial to grinding. After the grading treatment, the waste slurry with higher sand content can be separated, the part of the waste slurry can be used as fine sand for concrete or used as concrete admixture after being ground, the sand content of the waste slurry after passing through the concentration device is greatly reduced, and the grinding cost can be saved by separately grinding the two waste slurry.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus;
FIG. 2 is a schematic view showing the feeding direction of an air inlet and a waste slurry inlet provided on the graded feeding device;
FIG. 3 is a schematic structural view of the anti-blocking device;
FIG. 4 is a schematic view of another anti-blocking device;
fig. 5 is a schematic structural view of another anti-blocking device.
Wherein, 1, a grading feeding device; 2. a waste slurry inlet; 3. an anti-blocking device; 31. a discharge pipeline; 32. a second valve; 33. an air intake device; 34. a first rotating shaft; 35. a first motor; 36. a second motor; 37. a second rotating shaft; 4. an air inlet; 5. a pipeline mixer; 6. a feed inlet; 7. a first cylinder; 8. a second cylinder; 9. a material collection chamber; 10. a hydraulic press; 11. a water suction pump; 12. a connecting pipe; 13. a water collection cavity; 14. filtering cloth; 15. an overflow port; 16. a first valve; 17. a bin wall vibrator; 18. an ultrasonic anti-blocking device; 19. and a flow equalizing partition plate.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
Examples
As shown in figure 1, the high-efficiency separation and concentration device for the waste slurry water of the mixing plant comprises a grading feeding device 1 and a concentration device; wherein, the grading feeding device 1 consists of a round cylinder at the upper part and a conical cylinder at the lower part.
As shown in figures 1 and 2, an air inlet 4 and a waste slurry inlet 2 are arranged on the circular cylinder along the tangential direction, the air pressure entering from the air inlet 2 is not less than 12pa, waste slurry is pumped into the circular cylinder from the waste slurry inlet 2 by a pump, and the waste slurry is pumped after air is introduced from the air inlet 2 to form rotational flow. From this, air and waste pulp water homoenergetic form the whirl in circular barrel to can realize the classification to the waste pulp water, the upper end contains lower composition promptly and gets into the enrichment facility by enrichment facility's feed inlet 6 through the pipeline at circular barrel top and handles, contains higher composition admittedly then carries out subsequent processing through the bottom discharge gate of toper barrel.
As shown in figure 1, a pipeline mixer 5 is also arranged between the grading feeding device 1 and the concentration device, and the settling agent and the components with lower solid content can be mixed by the pipeline mixer 5 and then enter the concentration device together, so that the concentration treatment efficiency is improved.
As shown in figure 1, the conical cylinder is provided with a bottom discharge hole and an ultrasonic anti-blocking device 18, and the ultrasonic anti-blocking device 18 is fixed on the outer wall of the conical cylinder through a bolt so as to prevent high-solid-content components from blocking the bottom discharge hole.
As shown in fig. 1, the cylinder of the concentration device is composed of a first cylinder 7 and a second cylinder 8, wherein the first cylinder 7 has a larger diameter than the second cylinder 8. A fixed frame is arranged at the top of the first cylinder 7, a hydraulic press 10 which can stretch out and draw back in the vertical direction is fixed on the fixed frame, and the lower part of the hydraulic press 10 is connected with a filter pressing device. The filter pressing device consists of a water collecting cavity 13 and filter cloth 14, the aperture of the filter cloth 14 is 0.5-150 mu m, and is smaller than 20 mu m in the practical application process. A plurality of communicated flow equalizing partition plates 19 are arranged in the water collecting cavity 13. In addition, a water suction pump 11 is arranged at the top of the first cylinder 7, and the water suction pump 11 is communicated with the water collecting cavity 13 through a connecting pipe 12.
As shown in fig. 1, a material collecting cavity 9 is arranged in the second cylinder 8, the material collecting cavity 9 is located right below the filter pressing device, and the filter pressing device is attached to the inner wall of the second cylinder 8 and can freely slide, so that the function of filter pressing waste slurry in the second cylinder 8 is realized.
As shown in fig. 1, a feed inlet 6 communicated with the grading feed device 1 is formed in one side wall of the second cylinder 8, an overflow port 15 is formed in the upper end of the other side wall, and a first valve 16, preferably a first valve 16 electromagnetic valve, is arranged at the overflow port 15 and is electrically connected with a control system.
As shown in figure 1, be provided with a plurality of bulkhead vibrators 17 on the chamber 9 outer wall that gathers materials, its bottom is provided with prevents stifled device 3, prevents stifled device 3 for the device that can prevent the underflow opening jam, optionally is multiple structure, and the structure of the preferred one kind of preventing stifled device 3 of this application embodiment is shown in figure 3, is connected with ejection of compact pipeline 31 outside the underflow opening, and it is including vertical part and the kink that all is provided with second valve 32. Meanwhile, an air inlet device 33 is arranged at the end part of the vertical part far away from the underflow port, and the air inlet device 33 is preferably a high-pressure blower or a pulse airflow blower. When the discharge pipeline 31 is blocked, high-pressure bubbles can be emitted through the air inlet device 33, so that the blockage of the discharge pipeline 31 is relieved.
Another preferred structure of the anti-blocking device 3 of this embodiment is shown in fig. 4, and a first motor 35 is disposed at a pipe connected to the underflow port, and a first rotating shaft 34 connected to the first motor 35 is disposed in the pipe, and the first rotating shaft 34 is disposed in a horizontal direction. The first shaft 34 is provided with stirring blades having opposite spiral directions, and the pipe is provided with a second valve 32 located below the anti-clogging device 3. Drive first pivot 34 through first motor 35 and rotate, can effectually alleviate the jam, simultaneously, the jam that probably leads to when the opposite stirring vane of helical direction who sets up on the first pivot 34 also can avoid first pivot 34 to rotate the stirring along same direction.
Another structure of the anti-blocking device 3 preferred in this embodiment is shown in fig. 5, a second motor 36 is disposed on an outer wall of a pipeline connected to the underflow port, the second motor 36 is disposed in a vertical direction and faces the underflow port, a second rotating shaft 37 disposed in the pipeline and connected to the second motor 36 is also disposed in the vertical direction and faces the underflow port, a stirring blade is disposed on the second rotating shaft 308, and then a second valve 32 for controlling discharging is also disposed on the pipeline.
In this embodiment, the first valve 16 and the second valve 32 are both electrically connected to a control system, which is preferably a solenoid valve.
The using method of the device comprises the following steps:
after further desanding, the particle fineness of the waste slurry is less than 1.18mm, then the waste slurry is directly introduced into the grading feeding device 1 through a pump, after the bottom of the grading feeding device 1 begins to discharge (the solid content of the waste slurry at the bottom of the grading feeding device 1 is generally 35% or more), the ultrasonic anti-blocking device 18 arranged at the bottom of the grading feeding device 1 is started, and after the waste slurry overflows from the top of the grading feeding device 1, the feeding port 6 of the concentration device is started and the pipeline mixer 5 is started to add the settling agent.
After the feeding of the waste slurry is finished, the feeding hole 6, the pipeline mixer 5 and the grading feeding device 1 are closed. After repeated operation, when the waste slurry water fills the concentration device, after the clear water overflows from the overflow port 15 in the concentration device, the second valve 32 arranged at the bottom of the material collecting cavity 9 is opened, the high-concentration waste slurry flows out, and when the concentration of the waste slurry is less than 30%, the second valve 32 is closed.
Two situations occur at this time: (1) if waste slurry enters the device, the water absorption pump machine 11 is started to ensure that a discharge port at the top is clean water, after feeding is finished, the feed port 6 is closed, the hydraulic press 10 is started to press down, the water absorption pump machine 11 is started at the same time, after the solid content at the bottom is higher than 30%, the second valve 32 at the bottom is opened, and when the solid content is lower than 30%, the second valve 32 at the bottom is closed;
(2) if no waste slurry enters, the filter pressing device is pressed down through the hydraulic press 10, after the filter pressing device is pressed to the position below the overflow port 15, the water absorption pump 11 is started to pump clear water, after the solid content of the bottom is higher than 30%, the hydraulic press 10 is lifted, the second valve 32 at the bottom is opened, and when the solid content is lower than 30%, the second valve 32 at the bottom is closed.

Claims (6)

1. The high-efficiency separation and concentration device for the waste slurry water of the mixing plant is characterized by comprising a grading feeding device and a concentration device which are communicated with each other; the grading feeding device comprises a circular cylinder and a conical cylinder; the circular cylinder is provided with an air inlet and a waste slurry inlet which feed along the tangential direction of the circular cylinder; gas and waste slurry entering the air inlet and the waste slurry inlet can form rotational flow in the grading feeding device;
the concentration device comprises a cylinder body; a filter pressing device is arranged at the top of the cylinder, and a material collecting cavity positioned below the filter pressing device is arranged in the cylinder; the bottom of the material collecting cavity is provided with a bottom flow port, and an anti-blocking device is arranged at the bottom flow port;
the cylinder body of the concentration device comprises a first cylinder body and a second cylinder body; the diameter of the first cylinder is larger than that of the second cylinder; a filter pressing device is arranged at the top of the first cylinder and comprises filter cloth capable of sliding along the inner wall of the second cylinder; a water collecting cavity is arranged above the filter cloth; a flow equalizing partition plate is arranged in the water collecting cavity; the water collecting cavity is connected with a hydraulic press arranged on the fixing frame;
an overflow port is formed in the side wall of the second cylinder, and a material collecting cavity is formed in the second cylinder; and a bin wall vibrator is arranged on the side wall of the aggregate cavity.
2. The high-efficiency separation and concentration device for the waste slurry and water of the mixing plant as claimed in claim 1, wherein the top end of the circular cylinder is communicated with a feed inlet arranged on the side wall of the concentration device through a pipeline, and a pipeline mixer is arranged between the top end of the circular cylinder and the feed inlet.
3. The efficient separation and concentration device for the waste slurry and water in the mixing plant according to claim 1, wherein a bottom discharge hole is formed in the bottom of the conical cylinder, and an ultrasonic anti-blocking device is arranged at the bottom of the conical cylinder.
4. The efficient separating and concentrating device for the waste slurry and water of the mixing plant according to claim 3, wherein the bottom discharge hole is provided with a solid content monitor and a flow monitor.
5. The high-efficiency separation and concentration device for the waste slurry and water of the mixing plant as claimed in claim 1, wherein a water suction pump is further arranged at the top of the first cylinder; the water suction pump is communicated with the water collecting cavity through a connecting pipe.
6. The efficient separation and concentration device for waste slurry and water in a mixing plant according to claim 1, wherein the anti-blocking device is an anti-blocking device for relieving blockage through stirring, vibration or high-pressure bubbles.
CN202110622009.6A 2021-06-03 2021-06-03 High-efficient separation enrichment facility of stirring station waste slurry water Active CN113307406B (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011005362A (en) * 2009-06-23 2011-01-13 Tde:Kk Slurry treatment apparatus
AU2012100468A4 (en) * 2012-04-24 2012-05-31 Brett Edward Scottorn A portable or mobile waste water and dissolved solids recovery plant
CN106976999A (en) * 2017-05-02 2017-07-25 郑州新水工机械有限公司 Concrete mixing plant wastewater ocean disposal system
CN206502738U (en) * 2016-12-30 2017-09-19 佛山市绿建环保科技有限公司 A kind of construction slurry dehydration device
CN107555752A (en) * 2017-09-08 2018-01-09 三川德青工程机械有限公司 Underflow hopper, mud disposal system and method
CN207627994U (en) * 2017-11-01 2018-07-20 泸县浙川玻璃有限公司 Two-phase sedimentation basin
CN208212594U (en) * 2018-04-13 2018-12-11 贵州涟江源建材有限公司 A kind of sandstone production line waste pulp processing system
CN109955384A (en) * 2017-12-14 2019-07-02 南京机器人研究院有限公司 A kind of concrete mixing plant of Anti-blockage
CN209368585U (en) * 2018-11-26 2019-09-10 河南顺捷环保科技有限公司 Dense scummer in one kind
CN112495575A (en) * 2020-11-30 2021-03-16 泰州鸿材科技有限公司 Sand separating and washing integrated machine
CN212731365U (en) * 2020-06-10 2021-03-19 青岛恩普环保设备有限公司 Environment-friendly treatment system for waste slurry water of PC (polycarbonate) mixing plant

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011005362A (en) * 2009-06-23 2011-01-13 Tde:Kk Slurry treatment apparatus
AU2012100468A4 (en) * 2012-04-24 2012-05-31 Brett Edward Scottorn A portable or mobile waste water and dissolved solids recovery plant
CN206502738U (en) * 2016-12-30 2017-09-19 佛山市绿建环保科技有限公司 A kind of construction slurry dehydration device
CN106976999A (en) * 2017-05-02 2017-07-25 郑州新水工机械有限公司 Concrete mixing plant wastewater ocean disposal system
CN107555752A (en) * 2017-09-08 2018-01-09 三川德青工程机械有限公司 Underflow hopper, mud disposal system and method
CN207627994U (en) * 2017-11-01 2018-07-20 泸县浙川玻璃有限公司 Two-phase sedimentation basin
CN109955384A (en) * 2017-12-14 2019-07-02 南京机器人研究院有限公司 A kind of concrete mixing plant of Anti-blockage
CN208212594U (en) * 2018-04-13 2018-12-11 贵州涟江源建材有限公司 A kind of sandstone production line waste pulp processing system
CN209368585U (en) * 2018-11-26 2019-09-10 河南顺捷环保科技有限公司 Dense scummer in one kind
CN212731365U (en) * 2020-06-10 2021-03-19 青岛恩普环保设备有限公司 Environment-friendly treatment system for waste slurry water of PC (polycarbonate) mixing plant
CN112495575A (en) * 2020-11-30 2021-03-16 泰州鸿材科技有限公司 Sand separating and washing integrated machine

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