CN105776657A - Short-process continuous-casting turbid circulating water treatment technology - Google Patents
Short-process continuous-casting turbid circulating water treatment technology Download PDFInfo
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- CN105776657A CN105776657A CN201610159331.9A CN201610159331A CN105776657A CN 105776657 A CN105776657 A CN 105776657A CN 201610159331 A CN201610159331 A CN 201610159331A CN 105776657 A CN105776657 A CN 105776657A
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- water
- depurator
- circulating water
- turbid circulating
- continuous casting
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a short-process continuous-casting turbid circulating water treatment technology. According to a continuous-casting turbid circulating water path, facilities or structures, namely a rotational flow sedimentation tank, a lift pump, an efficient turbid water purifier, a cooling tower and a cool water tank are arranged sequentially, wherein the rotational flow sedimentation tank is used for removing large-particle-size suspended matters and coarse-particle oxidized scale, the lift pump is arranged between the rotational flow sedimentation tank and the efficient turbid water purifier, the efficient turbid water purifier is used for removing the suspended matters, fine-particle oxidized scale, grease and the like, the cooling tower is used for cooling outflow water of the efficient turbid water purifier, and the cool water tank is used for storing turbid water cooled by the cooling tower to facilitate recycling. The short-process continuous-casting turbid circulating water treatment technology is simpler than a traditional technology, more convenient in running management, smaller in occupied area, lower in investment and running cost and better in outflow water quality.
Description
Technical field
The invention belongs to steel and iron industry water treatment field, in particular it relates to a kind of short route continuous casting turbid circulating water processes technique.
Background technology
Continuous casting turbid circulating water is directly to cool down water in continuous casting installation for casting and products thereof production process, from two cold water spray systems, for strand, cutting roller-way and ejection across directly cool down.In turbid circulating water, major pollutants include: iron scale, oils and fats and float etc., and the existence of these pollutant can cause equipment and product surface corrosion, and affects product quality；The amount reproduction of microorganism can be caused；Pipeline and nozzle inner walls fouling, even plug nozzle can be caused.Therefore, before turbid circulating water recycles, it is necessary to remove major part pollutant therein, could run well by support equipment, it is ensured that the quality of product.
Continuous casting turbid circulating water processes and is generally adopted the technology such as coagulation, precipitation, filtration, cooling and water stabilization.Conventional process flow is generally
There is four major problem in traditional handicraft: one is that technological process is long, management trouble；Two is that horizontal sedimentation tank floor space is big, and construction investment is big, oil removing oil removal weak effect；Three is that high rate filter adopts quartz sand as filtrate, and filtrate easily hardens, and need to frequently change；Four is that turbid circulating water processing procedure need to repeatedly promote, and energy waste is many.
Summary of the invention
The purpose of the present invention is to propose to a kind of brand-new short route continuous casting turbid circulating water and process technique, it is intended to solve the problem above that traditional handicraft exists.
The purpose of the present invention is achieved through the following technical solutions: a kind of short route continuous casting turbid circulating water processes technique according to turbid circulating water path, sets gradually following facility or structures: rotational flow settling pond, elevator pump, efficient muddy water depurator, cooling tower, water cooling pond.Described rotational flow settling pond is used for removing big particle diameter float and coarse granule iron scale, it is provided with elevator pump between described rotational flow settling pond and efficient muddy water depurator, described efficient muddy water depurator is used for removing float, iron oxide fine particle skin and oils and fats etc., described used for cooling tower in cooling high-efficiency muddy water depurator water outlet, described water cooling pond is for the muddy water after the cooled tower cooler of interim storage, in order to recycle.
Further, described rotational flow settling pond adopts downside rotation type electro gravity rotational flow settling pond, turbid ring hot water tangentially enters center drum, current eddy flow declines, then flow out from center drum bottom, and rise along outer shroud settling zone current stabilization, being precipitated by center drum eddy flow and outer shroud current stabilization, coarse granule iron scale is removed at this.
Further, described efficient muddy water depurator is airtight pressure-bearing coagulation-sedimentation equipment, supporting waterpower mixing arrangement and chemicals dosing plant.Described efficient muddy water depurator arranges a central reaction cylinder, and bottom intakes, top water outlet, and discharge pipeline and blow-down pipe are arranged at bottom.Equipment is respectively provided with exhalant region, settling zone, coagulating district and sludge condensation district from top to bottom.
Further, described efficient muddy water depurator water outlet has pressure, and water outlet can automatically into cooling tower, and its discharge pressure is determined by the loss of flood peak of the elevator pump lift selected and device interior.
A kind of short route continuous casting turbid circulating water processes technique and comprises the following steps: first, and continuous casting turbid circulating water introduces rotational flow settling pond by sluice and carries out preliminary sedimentation；Then, the turbid circulating water after preliminary solid-liquid separation is sent into efficient muddy water depurator by elevator pump；Adding flocculating agent and flocculant respectively in efficient muddy water depurator, iron oxide fine particle skin in water, float and oils and fats coagulation form bulky grain flco, and are deposited in the sludge condensation district of efficient muddy water depurator, and continuous casting turbid circulating water completes secondary solid-liquid separation at this；Finally, the clear water after secondary solid-liquid separation cools down automatically into cooling tower, and the water after cooling is stored temporarily in water cooling pond, utilizes for continuous casting production cycle.
The invention has the beneficial effects as follows: the present invention adopts efficient muddy water depurator technological process to be shortened, and is greatly simplified technological process, decrease operational management trouble；Solving horizontal sedimentation tank floor space big, construction investment is big, the problem of oil removing oil removal weak effect；Eliminate high rate filter, solve the problem that traditional handicraft frequently changes filtrate；Turbid circulating water merely through once promoting, saves energy, decrease operating cost.
The further advantage of the present invention, characteristic will be set forth in follow-up description.And to a certain extent, based on to investigation hereafter and research, it will contribute to those skilled in the art's the understanding of the present invention and application.Advantages of the present invention and characteristic can realize from following embodiment.
Accompanying drawing explanation
In order to make the purpose of the present invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is present invention process flow chart.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiment of invention is illustrated.Should be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, and the present invention need not be limited.
As it can be seen, a kind of short route continuous casting turbid circulating water processes technique according to turbid circulating water path, set gradually following facility or structures: rotational flow settling pond, elevator pump, efficient muddy water depurator, cooling tower, water cooling pond.Described rotational flow settling pond is used for removing big particle diameter float and coarse granule iron scale, it is provided with elevator pump between described rotational flow settling pond and efficient muddy water depurator, described efficient muddy water depurator is used for removing float, iron oxide fine particle skin and oils and fats etc., described used for cooling tower in cooling high-efficiency muddy water depurator water outlet, described water cooling pond is for the muddy water after the cooled tower cooler of interim storage, in order to recycle.
In the present embodiment, described rotational flow settling pond adopts downside rotation type electro gravity rotational flow settling pond, turbid ring hot water tangentially enters center drum, current eddy flow declines, then rush center drum bottom to flow out, and rise along outer shroud settling zone current stabilization, being precipitated by center drum eddy flow and outer shroud current stabilization, coarse granule iron scale is removed at this.
In the present embodiment, described efficient muddy water depurator is airtight pressure-bearing coagulation-sedimentation equipment, supporting waterpower mixing arrangement and chemicals dosing plant.Described efficient muddy water depurator arranges a central reaction cylinder, and bottom intakes, top water outlet, and discharge pipeline and blow-down pipe are arranged at bottom.Equipment is respectively provided with exhalant region, settling zone, coagulating district and sludge condensation district from top to bottom.
In the present embodiment, described efficient muddy water depurator water outlet has pressure, and water outlet can automatically into cooling tower, and its discharge pressure is determined by the loss of flood peak of the elevator pump lift selected and device interior.
In the present embodiment, short route continuous casting turbid circulating water processes technique and comprises the following steps: first, and continuous casting turbid circulating water introduces rotational flow settling pond by sluice and carries out preliminary sedimentation；Then, the turbid circulating water after preliminary solid-liquid separation is sent into efficient muddy water depurator by elevator pump；Adding flocculating agent and flocculant respectively in efficient muddy water depurator, iron oxide fine particle skin in water, float and oils and fats coagulation form bulky grain flco, and are deposited in the sludge condensation district of efficient muddy water depurator, and continuous casting turbid circulating water completes secondary solid-liquid separation at this；Finally, the clear water after secondary solid-liquid separation cools down automatically into cooling tower, and the water after cooling is stored temporarily in water cooling pond, utilizes for continuous casting production cycle.
In the present embodiment, efficient muddy water depurator selects 4, and supporting waterpower mixing arrangement and chemicals dosing plant.The effect of efficient muddy water depurator is to remove the float in rotational flow settling pond water outlet, iron oxide fine particle skin and oils and fats further by addition flocculating agent and flocculant.The boosted pump of rotational flow settling pond water outlet enters waterpower mixing arrangement after promoting, connect before and after waterpower mixing arrangement on pipeline and be respectively provided with a static pipeline mixer, dosing mouth at pipe-line mixer adds flocculating agent and flocculant respectively, turbid circulating water after being sufficiently mixed with medicament enters efficient muddy water depurator, and carries out the materializing procedures such as flocculation reaction, solid-liquid separation, sludge condensation.Efficient muddy water depurator is interrupted spoil disposal, and spoil disposal is directly entered sludge storage pool.Efficient muddy water depurator influent quality: float (SS)≤300mg/L, oil≤50mg/L；Effluent quality: float (SS)≤10mg/L, oil≤5mg/L.
In the present embodiment, efficient muddy water depurator effluent quality can meet continuous casting process turbid circulating water and recycled requirement, without arranging high rate filter, solve tradition continuous casting turbid circulating water process technique high speed filter be easily generated filtrate harden, filter material replacement frequently, the problem such as backwash waste process.
Efficient muddy water depurator integrates coagulation, precipitation, sludge condensation, and water outlet has pressure, enormously simplify continuous casting turbid circulating water processing technological flow, makes whole service maintenance process become simple, and effluent quality is better than traditional handicraft simultaneously.
It is 1000m3/h that the present embodiment processes the water yield, and year, days running was according to consideration in 350 days, and the traditional handicraft adopting horizontal sedimentation tank contrasts in Table 1 with the abbreviated system adopting efficient muddy water depurator.
Table 1 traditional handicraft and abbreviated system contrast table
In the present embodiment, the short route continuous casting turbid circulating water applying efficient muddy water depurator processes technique superiority significantly, main following points: (1) simplifies technological process, makes continuous casting turbid circulating water process and becomes easy, and operational management is convenient, and maintenance workload is few；(2) solving tradition advection sedimentation pool process floor space big, construction investment is high, the problem that effluent quality is bad；(3) reducing by one group of elevator pump, turbid circulating water, merely through once promoting, has saved operating cost.
What finally illustrate is, above example only illustrates technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, those skilled in the art is to be understood that, technical scheme can be modified or equivalent replacement, without deviating from objective and the scope of technical solution of the present invention, it all should be encompassed in scope of the presently claimed invention.
Claims (5)
1. a short route continuous casting turbid circulating water processes technique, it is characterised in that: described technique sets gradually following facility or structures according to the path of continuous casting turbid circulating water: rotational flow settling pond, elevator pump, efficient muddy water depurator, cooling tower, water cooling pond；Described rotational flow settling pond is used for removing big particle diameter float and coarse granule iron scale, it is provided with elevator pump between described rotational flow settling pond and efficient muddy water depurator, described efficient muddy water depurator is used for removing float, iron oxide fine particle skin and oils and fats etc., described used for cooling tower in cooling high-efficiency muddy water depurator water outlet, described water cooling pond is for the muddy water after the cooled tower cooler of interim storage, in order to recycle.
2. a kind of short route continuous casting turbid circulating water according to claim 1 processes technique, it is characterized in that: described rotational flow settling pond adopts downside rotation type electro gravity rotational flow settling pond, turbid ring hot water tangentially enters center drum, current eddy flow declines, then flow out from center drum bottom, and rise along outer shroud settling zone current stabilization, being precipitated by center drum eddy flow and outer shroud current stabilization, coarse granule iron scale is removed at this.
3. a kind of short route continuous casting turbid circulating water according to claim 1 processes technique, it is characterised in that: described efficient muddy water depurator is airtight pressure-bearing coagulation-sedimentation equipment, supporting waterpower mixing arrangement and chemicals dosing plant；Described efficient muddy water depurator arranges a central reaction cylinder, and bottom intakes, top water outlet, and discharge pipeline and blow-down pipe are arranged at bottom.Equipment is respectively provided with exhalant region, settling zone, coagulating district and sludge condensation district from top to bottom.
4. a kind of short route continuous casting turbid circulating water according to claim 1 processes technique, it is characterized in that: described efficient muddy water depurator water outlet has pressure, water outlet can automatically into cooling tower, and its discharge pressure is determined by the loss of flood peak of the elevator pump lift selected and device interior.
5. process technique according to the arbitrary described a kind of short route continuous casting turbid circulating water of claim 1-4, it is characterised in that: comprising the steps: first, continuous casting turbid circulating water introduces rotational flow settling pond by sluice and carries out preliminary sedimentation；Then, the turbid circulating water after preliminary solid-liquid separation is sent into efficient muddy water depurator by elevator pump；Efficient muddy water depurator adds flocculating agent and flocculant respectively, the iron oxide fine particle skin in water, float and oils and fats coagulation is made to form bulky grain flco, and it being deposited in the sludge condensation district of efficient muddy water depurator, continuous casting turbid circulating water completes secondary solid-liquid separation at this；Finally, the clear water after secondary solid-liquid separation cools down automatically into cooling tower, and the water after cooling is stored temporarily in water cooling pond, utilizes for continuous casting production cycle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610159331.9A CN105776657A (en) | 2016-03-21 | 2016-03-21 | Short-process continuous-casting turbid circulating water treatment technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610159331.9A CN105776657A (en) | 2016-03-21 | 2016-03-21 | Short-process continuous-casting turbid circulating water treatment technology |
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| CN201610159331.9A Pending CN105776657A (en) | 2016-03-21 | 2016-03-21 | Short-process continuous-casting turbid circulating water treatment technology |
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Cited By (2)
| 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 |
| CN113091395A (en) * | 2021-03-29 | 2021-07-09 | 中国重型机械研究院股份公司 | Circulating cooling water return device and method for continuous casting machine equipment |
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| WO2014105493A1 (en) * | 2012-12-28 | 2014-07-03 | Ecolab Usa Inc. | Fluorescent monomers and tagged treatment polymers containing same for use in industrial water systems |
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Cited By (2)
| 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 |
| CN113091395A (en) * | 2021-03-29 | 2021-07-09 | 中国重型机械研究院股份公司 | Circulating cooling water return device and method for continuous casting machine equipment |
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