CN213950844U - Turbid circulating water treatment system for continuous casting - Google Patents
Turbid circulating water treatment system for continuous casting Download PDFInfo
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- CN213950844U CN213950844U CN202022727941.9U CN202022727941U CN213950844U CN 213950844 U CN213950844 U CN 213950844U CN 202022727941 U CN202022727941 U CN 202022727941U CN 213950844 U CN213950844 U CN 213950844U
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Abstract
The utility model relates to a turbid circulating water processing system of continuous casting belongs to metallurgical industry continuous casting water treatment field. The device comprises a rotational flow sedimentation tank, a closed turbid water purifier with pressure, a closed double-rotational flow filter with pressure, a cooling tower and a cold water tank which are arranged along the water flow direction and are sequentially communicated through a pipeline; the turbid water purifier comprises a mixing tank and a treatment tank which are sequentially communicated through a pipeline along the water flow direction, and the upstream of the mixing tank is communicated with a dosing device communicated with the mixing tank; a lifting pump is arranged on a pipeline of the rotational flow sedimentation tank leading to the mixing tank; the cold water tank is communicated with a backwashing pipeline leading to the double-cyclone filter, and a backwashing pump is arranged on the backwashing pipeline; the cold water tank is communicated with a water supply pipeline for supplying water to users, and a water supply pump is arranged on the water supply pipeline; the processing tank of the turbid water purifier is communicated with the double-cyclone filter to form a slurry processing device. The system has the advantages of good effluent quality, strong impact load resistance, high efficiency, energy conservation, small occupied area, flexible arrangement, simple operation management and suitability for new construction and reconstruction projects.
Description
Technical Field
The utility model belongs to metallurgical industry continuous casting water treatment field relates to a turbid circulating water processing system of continuous casting.
Background
The continuous casting turbid circulating water is used for direct cooling, secondary spray cooling, slag flushing of casting blanks in continuous casting production and water for cooling of equipment such as cutting machines, flame cleaning equipment and the like, because cooling water is in contact with high-temperature casting blanks, the water contains iron scales, grease and sundries, the water has high return water temperature, high suspended matter content and alkaline PH, and cannot be directly recycled.
The main treatment process of the continuous casting turbid circulating water at present is a three-stage treatment process: and cooling the rotational flow sedimentation tank, the chemical oil remover, the sand filter and the cooling tower for recycling. The return water firstly enters a rotational flow sedimentation tank, after coarse-grained iron scales are removed through primary sedimentation, the return water is sent to a chemical oil remover through a water pump to remove fine-grained iron scales and oil, the outlet water of the chemical oil remover is decompressed and enters a hot water tank, the outlet water is pressurized by the pump and then is sent to a sand filter for filtration, the filtered water enters a cooling tower for treatment by using excess pressure, and the cooled outlet water enters a continuous casting turbid circulating cold water tank and is then lifted by the pump to be sent to a water consumption point. The chemical degreaser is low in load, the pressure relief of outlet water needs to be improved for the second time, and the chemical degreaser needs to be stirred by a stirrer to mix the return water with a medicament, so that the treatment equipment is large in occupied area, large in medicament addition amount, long in construction period, high in operation energy consumption, the problem that an inclined pipe is frequently crushed by sludge plates in the chemical degreaser is solved, and the maintenance intensity of workers is high; the sand filter has poor water quality impact load resistance, the air consumption of backwashing water is large, and filter materials are easy to cause poor filtering effect due to unclean backwashing, so that the water quality of discharged water is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a continuous casting turbid circulating water treatment system to solve the deficiencies in the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a continuous casting turbid circulating water treatment system comprises a rotational flow sedimentation tank, a closed turbid water purifier with pressure, a closed double rotational flow filter with pressure, a cooling tower and a cold water tank which are arranged along the water flow direction and are sequentially communicated through a pipeline; the turbid water purifier comprises a mixing tank and a treatment tank which are sequentially communicated through a pipeline along the water flow direction, and the upstream of the mixing tank is communicated with a dosing device communicated with the mixing tank; a lifting pump is arranged on a pipeline of the rotational flow sedimentation tank leading to the mixing tank; the cold water tank is communicated with a backwashing pipeline leading to the double-cyclone filter, and a backwashing pump is arranged on the backwashing pipeline; the cold water tank is communicated with a water supply pipeline for supplying water to users, and a water supply pump is arranged on the water supply pipeline; the processing tank of the turbid water purifier is communicated with the double-cyclone filter to form a slurry processing device.
Further, the mud treatment device comprises a mud pool, a concentration pool, a mud adjusting pool and a mud dehydrator which are sequentially communicated through pipelines along the mud flow direction; wherein, the concentration tank and the slurry dehydrator are respectively communicated with a water pipe leading to the rotational flow sedimentation tank.
Furthermore, a slurry pump is arranged on a pipeline of the slurry tank leading to the concentration tank and a pipeline of the slurry adjusting tank leading to the slurry dehydrator.
Furthermore, the cyclone sedimentation tank is communicated with an iron sheet groove which is used for collecting continuous casting turbid circulating water and guiding the continuous casting turbid circulating water into the cyclone sedimentation tank.
Further, the cold water pool is communicated with a water replenishing pipeline leading to the cold water pool.
Further, the mixing tank is communicated with the dosing device through a pipeline mixer, and the pipeline mixer is used for mixing the coagulant aid and the flocculating agent from the dosing device.
The beneficial effects of the utility model reside in that:
(1) the utility model introduces the turbid water purifier and the double-cyclone filter, correspondingly replaces a chemical oil remover and a sand filter in the prior art, has high decontamination efficiency, improves decontamination effect, ensures that the water outlet of the double-cyclone filter can reach that the suspended matters are less than or equal to 15mg/l and the oil is less than or equal to 3mg/l, improves the water quality of the outlet water, reduces the problem of blocking and aging of the filler of the cooling tower, also reduces the blocking of a spray head of a user, and reduces maintenance cost; moreover, suspended matters and oil can be efficiently removed only by adding a small amount of coagulant aids and flocculating agents, and the dosage of the medicament is reduced.
(2) The utility model discloses well turbid water purifier and bispin flow filter are the tank structure of airtight area pressure, and the two goes out water area and takes the direct pipeline of using to deliver to follow-up water treatment facilities, need not the intermediate link that the pressurization secondary promoted, simplifies process flow.
(3) The utility model discloses the load of well turbid water purifier is 7 ~ 10 times higher than ordinary chemical degreaser, and the load of double-cyclone filter also surpasss ordinary sand filter greatly, can effectively reduce area, reduces workman and maintains working strength.
(4) The utility model has the advantages of energy-efficient, area is little, arrange nimble, operation management is simple, degree of automation is high, therefore not only be applicable to the project of newly building, also be applicable to the project of reforming transform on the spot.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a process flow diagram of the present invention.
Reference numerals: the system comprises a rotational flow sedimentation tank 1, a dosing device 2, a mixing tank 3, a treatment tank 4, a double-rotational flow filter 5, a cooling tower 6, a cold water tank 7, a water supplementing pipeline 8, a first water supply pump 9, a backwashing pump 10, a second water supply pump 11, an iron sheet ditch 12, a lifting pump 13, a mud slurry tank 14, a mud pump 15, a concentration tank 16, a mud adjusting tank 17 and a mud dehydrator 18.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1, a continuous casting turbid circulating water treatment system includes a cyclone sedimentation tank 1, a closed turbid water purifier with pressure, a closed double cyclone filter 5 with pressure, a cooling tower 6 and a cold water tank 7, which are arranged along a water flow direction and sequentially communicated with each other through a pipeline.
Turbid water purifier is steel equipment, include along rivers direction through the blending tank 3 and the processing jar 4 that the pipeline communicates in proper order, the quantity of processing jar 4 reaches the matching with the water treatment ability of blending tank 3 according to actual need, can parallelly connected set up a plurality ofly, processing jar 4 parallel connection has two in this embodiment, processing jar 4 is including mixing flocculation district and settling zone, the upper reaches intercommunication of blending tank 3 has charge device 2 that accesss to it, blending tank 3 passes through pipe mixer and 2 intercommunications of charge device, pipe mixer is used for mixing coagulant aid and the flocculating agent that comes from charge device 2.
A lifting pump 13 is arranged on a pipeline of the rotational flow sedimentation tank 1 leading to the mixing tank 3.
The cold water tank 7 is communicated with a backwashing pipeline leading to the double-cyclone filter 5, and a backwashing pump 10 is arranged on the backwashing pipeline; the cold water pond 7 intercommunication has the first water supply pipe who is used for supplying water to the user, is equipped with first working shaft 9 on the first water supply pipe, and in this embodiment, the user indicates the secondary spray cooling of conticaster, and correspondingly, the water after the user used is continuous casting secondary cooling water, belongs to the turbid circulating water's of continuous casting one kind. The cold water pool 7 is also communicated with a water replenishing pipeline 8 leading to the cold water pool, and new water is replenished into the cooling pool 7 through the water replenishing pipeline 8 so as to make up for water loss generated in the operation process of the whole treatment system. In addition, the cold water tank 7 is also communicated with a production wastewater pipe network, so that when the cold water tank 7 needs to be emptied, and the treatment system is cleaned and maintained, water stored in the cold water tank 7 is drained to the production wastewater pipe network.
In this embodiment, the turbid continuous casting circulating water treated by the cyclone sedimentation tank 1 has two sources, one is the secondary cooling water for continuous casting, and the other is the water for continuous casting slag flushing led out by the second water supply pump. The cyclone sedimentation tank 1 is communicated with an iron sheet ditch 12, and the continuous casting secondary cooling water and the continuous casting slag flushing water are collected in the iron sheet ditch 12 and flow into the cyclone sedimentation tank 1.
The number of the double cyclone filters 5 can be set in parallel according to actual needs and matching with the water treatment capacity of the turbid water purifier, and the double cyclone filters 5 are connected in parallel with two in the embodiment. The treatment tank 4 of the turbid water purifier and the double-cyclone filter 5 are communicated with a slurry treatment device, and the slurry treatment device comprises a slurry tank 14, a concentration tank 16, a slurry regulating tank 17 and a slurry dehydrator 18 which are sequentially communicated with each other through pipelines along the slurry flow direction; wherein, two concentration tanks 16 are connected in parallel, and the concentration tank 16 and the slurry dehydrator 18 are respectively communicated with a water pipe leading to the rotational flow sedimentation tank 1. The mud pump 15 is arranged on a pipeline of the mud pit 14 leading to the concentration pit 16 and a pipeline of the mud adjusting pit 17 leading to the mud dewatering machine 18. The mud pit 14 and the mud adjusting pit 17 are provided with stirrers.
The process for treating the continuous casting turbid circulating water by using the treatment system comprises the following steps:
primary treatment: leading continuous casting turbid circulating water (including continuous casting secondary cooling water and continuous casting slag flushing water) to be treated into a cyclone sedimentation tank 1 through an iron sheet ditch 12 for sedimentation, and removing impurities in the water;
secondary treatment: the effluent of the rotational flow sedimentation tank 1 is sent to a turbid water purifier through a lift pump 13, the effluent and coagulant aid and flocculant from a dosing device 2 enter a mixing tank 3 for mixing reaction, and then enter a treatment tank 4 for purification, so that mud and water are separated, suspended matters and oil are removed, the suspended matters in the effluent with pressure in the treatment tank 4 are less than or equal to 20mg/l, and the oil is less than or equal to 5 mg/l; wherein the design surface load of the treatment tank 4 is 23m3V ((square meter) · h); meanwhile, the slurry generated in the treatment tank 4 is sent to a slurry treatment device for treatment;
and (3) tertiary treatment: introducing the pressurized effluent of the treatment tank 4 into a double-cyclone filter 5 for filtering, further separating mud from water, and removing suspended matters and oil, wherein the suspended matters in the pressurized effluent of the double-cyclone filter 5 are less than or equal to 15mg/l, and the oil is less than or equal to 3 mg/l; wherein the design surface load of the double cyclone filter 5 is 45m3/(㎡.h)；
And (3) recycling: introducing the pressurized effluent of the double-cyclone filter 5 into a cooling tower 6 for cooling, introducing the cooled effluent into a cold water pool 7, and further delivering the cooled effluent to each user for recycling; part of the water discharged from the cold water tank 7 is sent to the double-cyclone filter 5 through a backwashing pump 10, the double-cyclone filter 5 is backwashed, and slurry generated by backwashing of the double-cyclone filter 5 is sent to a slurry treatment device for treatment;
for slurry treatment: the sludge discharge of the treatment tank 4 and the double cyclone filter 5 is first received by the sludge basin 14. Mud discharged by different tank devices or the same tank device at different time is uniformly mixed in the mud tank 14 by a stirrer arranged in the mud tank 14, so that the occurrence of different gravity flows is avoided; then the mud is sent to a concentration tank 16 by a mud pump 15 for concentration; then the concentrated slurry is sent to a slurry adjusting tank 17 and is uniformly mixed again through a stirrer arranged in the slurry adjusting tank 17; finally, the mud which is homogenized and mixed is sent to a mud dehydrator 18 through a mud pump 15 for dehydration and desiccation, and the formed mud cake is transported outside a vehicle, so that the purposes of reducing the volume of the mud and reducing the water content to form the mud cake and further realizing convenient transportation are achieved.
In addition, water generated by the concentration tank 16 and the mud dewatering machine 18 is respectively led into the cyclone sedimentation tank 1 through water pipes to participate in the primary treatment.
The prior art chemical degreaser and sand filter are replaced by introducing a turbid water purifier and a double-cyclone filter 5. The muddy water purifier adopts a sedimentation clarification technology combining cyclone separation and sludge circulation reflux, can greatly improve the flocculation sedimentation effect, and reduces the dosage of water treatment agents. The removal rate of suspended matters in the turbid water purifier can reach 96 percent, and the oil removal rate can reach 83 percent; the water inlet suspended matter of the turbid water purifier can reach 500mg/l, and the water inlet oil can reach 30 mg/l.
The filter material of the double-cyclone filter 5 is hydrophilic and oleophobic, the filtering precision is high, the specific surface area of the filter material is large, the void ratio is high, the through-flow capacity is strong, the backwashing frequency is low, and the backwashing effect is good. The removal rate of suspended matters in the double-cyclone filter 5 can reach 90 percent, and the oil removal rate can reach 90 percent; the water inlet suspended matter of the double-cyclone filter 5 can reach 150 mg/l; the water and oil can be as high as 30 mg/l. The suspended matters in the effluent treated by the double-cyclone filter 5 are less than or equal to 15mg/l, the oil content is less than or equal to 3mg/l, the effluent quality is improved, the problem of blockage and aging of the filler of the cooling tower 6 is solved, the blockage of a spray head of a user is reduced, and the maintenance cost is reduced; moreover, suspended matters and oil can be efficiently removed only by adding a small amount of coagulant aids and flocculating agents, and the dosage of the medicament is reduced.
The turbid water purifier and the double-cyclone filter 5 are both of a closed tank body structure with pressure, the effluent water of the turbid water purifier and the double-cyclone filter can be directly conveyed to subsequent water treatment equipment with pressure by a pipeline without an intermediate link of pressurizing secondary lifting, and the process flow is simplified.
The load of the muddy water purifier is 7-10 times higher than that of a common chemical oil remover, and the load of the double-cyclone filter 5 greatly exceeds that of a common sand filter, so that the occupied area can be effectively reduced, and the maintenance working strength of workers is reduced.
The turbid water purifier and the double-cyclone filter 5 are steel equipment, main components can be produced and assembled in a factory, and the field only needs to be integrally in place, so that the construction difficulty is greatly reduced, and the construction period is shortened.
The utility model discloses a whirl sedimentation tank 1+ muddy water clarifier + two whirl filters 5, the collection is thoughtlessly congealed, flocculates, deposits and filters in a processing procedure, greatly reduces suspended solid content and oil concentration, goes out water quality of water stable, and impact load resistance ability is extremely strong, improves the water circulation rate. The utility model has the advantages of energy-efficient, area is little, arrange nimble, operation management is simple, degree of automation is high, therefore not only be applicable to the project of newly building, also be applicable to the project of reforming transform on the spot.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (6)
1. A continuous casting turbid circulating water treatment system is characterized in that: the system comprises a rotational flow sedimentation tank, a closed turbid water purifier with pressure, a closed double rotational flow filter with pressure, a cooling tower and a cold water tank which are arranged along the water flow direction and are sequentially communicated through a pipeline; the turbid water purifier comprises a mixing tank and a treatment tank which are sequentially communicated through a pipeline along the water flow direction, and the upstream of the mixing tank is communicated with a dosing device communicated with the mixing tank; a lifting pump is arranged on a pipeline of the rotational flow sedimentation tank leading to the mixing tank; the cold water tank is communicated with a backwashing pipeline leading to the double-cyclone filter, and a backwashing pump is arranged on the backwashing pipeline; the cold water tank is communicated with a water supply pipeline for supplying water to users, and a water supply pump is arranged on the water supply pipeline; the processing tank of the turbid water purifier is communicated with the double-cyclone filter to form a slurry processing device.
2. The continuous casting turbid circulating water treatment system according to claim 1, characterized in that: the mud treatment device comprises a mud pool, a concentration pool, a mud adjusting pool and a mud dehydrator which are sequentially communicated through a pipeline along the mud flow direction; wherein, the concentration tank and the slurry dehydrator are respectively communicated with a water pipe leading to the rotational flow sedimentation tank.
3. The continuous casting turbid circulating water treatment system according to claim 2, characterized in that: and a mud pump is arranged on a pipeline leading from the mud tank to the concentration tank and a pipeline leading from the mud regulating tank to the mud dehydrator.
4. The continuous casting turbid circulating water treatment system according to claim 1, characterized in that: the cyclone sedimentation tank is communicated with an iron sheet groove which is used for collecting continuous casting turbid circulating water and guiding the continuous casting turbid circulating water into the cyclone sedimentation tank.
5. The continuous casting turbid circulating water treatment system according to claim 1, characterized in that: the cold water pool is communicated with a water replenishing pipeline leading to the cold water pool.
6. The continuous casting turbid circulating water treatment system according to claim 1, characterized in that: the mixing tank is communicated with the dosing device through a pipeline mixer, and the pipeline mixer is used for mixing coagulant aids and flocculating agents from the dosing device.
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| CN202022727941.9U CN213950844U (en) | 2020-11-23 | 2020-11-23 | Turbid circulating water treatment system for continuous casting |
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| CN202022727941.9U CN213950844U (en) | 2020-11-23 | 2020-11-23 | Turbid circulating water treatment system for continuous casting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321029A (en) * | 2020-11-23 | 2021-02-05 | 中冶赛迪工程技术股份有限公司 | Continuous casting turbid circulating water treatment system and process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321029A (en) * | 2020-11-23 | 2021-02-05 | 中冶赛迪工程技术股份有限公司 | Continuous casting turbid circulating water treatment system and process |
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