CN104261609A - Continuous casting turbid circulating water treatment system and technology - Google Patents
Continuous casting turbid circulating water treatment system and technology Download PDFInfo
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- CN104261609A CN104261609A CN201410531187.8A CN201410531187A CN104261609A CN 104261609 A CN104261609 A CN 104261609A CN 201410531187 A CN201410531187 A CN 201410531187A CN 104261609 A CN104261609 A CN 104261609A
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- turbid circulating
- film filter
- circulating water
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
-
- 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
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
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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)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a continuous casting turbid circulating water treatment system and technology. A whirl flow pond, a chemical oil remover, a hot water pond, a ceramic film filter, a cooling tower and a cold water pond are successively arranged according to the treatment sequence of continuous casting turbid circulating water, wherein the whirl flow pond is used for performing solid-liquid separation on the continuous casting turbid circulating water, a lifting pump is arranged between the whirl flow pond and the chemical oil remover, the hot water pond is used for accelerating the solid-water separation in the liquid, a hot water pump is also arranged between the hot water pond and the ceramic film filter, and the water filtered by the ceramic film filter is cooled by the cooling tower and then enters the cold water pond to be stored for being recycled conveniently. The chemical oil remover disclosed by the invention solves the problems of large occupation area of an advection pool and poor oil removing and suspended objects removing effects; the ceramic film filter solves the problems that the treatment effect for the continuous casting turbid circulating water by a quartz sand filter is poor, filter materials need to be replaced every year, and the environmental pollution is serious, so that the system and technology disclosed by the invention overcome the defects in the prior art, and the treatment effect is better.
Description
Technical field
The invention belongs to water treatment field, be specifically related to a kind of continuous casting turbid circulating water treatment system and technique.
Background technology
Continuous casting turbid circulating water is the direct water coolant of continuous casting installation for casting and product, mainly refers to the waste water that secondary cooling zone produces, the steel billet water spray that a large amount of nozzles draws to withdrawing roll, and make steel billet cooling curing further, this water is by thermal pollution and with iron scale and grease.Treatment process generally adopts solid-liquid separation (precipitation), liquid-liquid separation (oil removing), filtration, cooling, water conditioning measure, to reach recycle.Existing continuous casting turbid circulating water treatment system technique, as " Whirlwind tank+horizontal sedimentation tank+quartz filter " exists three large problems: one is that horizontal sedimentation tank takes up an area greatly, and oil removing oil removal effect is all poor; Two is that the effect of quartz filter to the suspended substance in process continuous casting turbid circulating water and oil is also undesirable, needs every year to change filtrate, great contaminate environment; Three is that the spoil disposal of horizontal sedimentation tank and quartz filter backwashing water enter again Whirlwind tank and recycle, and makes water quality worse and worse.
Summary of the invention
In view of this, the object of this invention is to provide a kind of new continuous casting turbid circulating water treatment process, overcome the above-mentioned defect of prior art.
The object of the invention is to be achieved through the following technical solutions:
A kind of continuous casting turbid circulating water treatment system, processing sequence according to continuous casting turbid circulating water is disposed with Whirlwind tank, chemical oil remover, hot tub, purpose ceramic-film filter, cooling tower and water cooling pond, described Whirlwind tank is used for carrying out solid-liquid separation to continuous casting turbid circulating water, lift pump is provided with between described Whirlwind tank and chemical oil remover, described hot tub is used for the oily water separation in accelerating liquid, the hot water pump for being sent into by the liquid in hot tub in purpose ceramic-film filter is also provided with between described hot tub and purpose ceramic-film filter, water after described purpose ceramic-film filter filters enters in water cooling pond and stores again to reuse after cooling tower cooling.
Further, described continuous casting turbid circulating water treatment system also comprises suction pit, and the mud in described chemical oil remover and purpose ceramic-film filter enters in suction pit by pipeline, and the mud in described suction pit is entered in steel-smelting sewage sludge treatment system by slush pump.
Further, described purpose ceramic-film filter comprises three rooms, and upper strata is gathering room, and middle level is filtration chamber, and lower floor is slag pocket; Fluid inlet and oil discharge outlet is provided with at gathering room; Filter locular wall and be provided with liquid outlet, slag pocket is provided with soil cleaning port and sewage draining exit.
First a kind of continuous casting turbid circulating water treatment process, comprised the steps:, be incorporated in Whirlwind tank by the continuous casting turbid circulating water with iron scale and grease precipitate by sluice; Then, utilize lift pump by the Liquid transfer in Whirlwind tank in chemical oil remover, in chemical oil-discharging device, add flocculation agent and oil flocculant make oils in water and suspended substance cohesion, clear water chemically oil eliminator top overflow, macrobead wadding flower is deposited in the mud-removing bucket of chemical oil remover bottom, center; The clear water overflowed enters in hot tub and accelerates oily water separation; Then by hot water pump, the water in hot tub is incorporated into further oil removing, filtration and precipitation in purpose ceramic-film filter; Enter in water cooling pond after being cooled by cooling tower finally by the water after purpose ceramic-film filter filtration and store again to reuse.
The invention has the beneficial effects as follows: it is large that the present invention adopts chemical oil remover to solve horizontal flow basin floor space, the problem of oil removing oil removal weak effect; Adopt purpose ceramic-film filter to solve quartz filter to process continuous casting turbid circulating water weak effect, need every year to change filtrate, the problem of great contaminate environment; The sludge system adopted solves the spoil disposal of horizontal sedimentation tank and quartz filter backwashing water and enters again Whirlwind tank and recycle, and makes water quality problem worse and worse.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from the practice of the present invention.Target of the present invention and other advantages can be realized by specification sheets below and obtain.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is present invention process schema.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment only in order to the present invention is described, instead of in order to limit the scope of the invention.
As shown in the figure, a kind of continuous casting turbid circulating water treatment system, processing sequence according to continuous casting turbid circulating water is disposed with Whirlwind tank, chemical oil remover, hot tub, purpose ceramic-film filter, cooling tower and water cooling pond, described Whirlwind tank is used for carrying out solid-liquid separation to continuous casting turbid circulating water, lift pump is provided with between described Whirlwind tank and chemical oil remover, described hot tub is used for the oily water separation in accelerating liquid, the hot water pump for being sent into by the liquid in hot tub in purpose ceramic-film filter is also provided with between described hot tub and purpose ceramic-film filter, water after described purpose ceramic-film filter filters enters in water cooling pond and stores again to reuse after cooling tower cooling.
In the present embodiment, described continuous casting turbid circulating water treatment system also comprises suction pit, and the mud in described chemical oil remover and purpose ceramic-film filter enters in suction pit by pipeline, and the mud in described suction pit is entered in steel-smelting sewage sludge treatment system by slush pump.
In the present embodiment, described purpose ceramic-film filter comprises three rooms, and upper strata is gathering room, and middle level is filtration chamber, and lower floor is slag pocket; Fluid inlet and oil discharge outlet is provided with at gathering room; Filter locular wall and be provided with liquid outlet, slag pocket is provided with soil cleaning port and sewage draining exit.
First continuous casting turbid circulating water treatment process in the present embodiment, comprise the steps:, is incorporated in Whirlwind tank by the continuous casting turbid circulating water with iron scale and grease precipitates by sluice; Then, utilize lift pump by the Liquid transfer in Whirlwind tank in chemical oil remover, in chemical oil-discharging device, add flocculation agent and oil flocculant make oils in water and suspended substance cohesion, clear water chemically oil eliminator top overflow, macrobead wadding flower is deposited in the mud-removing bucket of chemical oil remover bottom, center; The clear water overflowed enters in hot tub and accelerates oily water separation; Then by hot water pump, the water in hot tub is incorporated into further oil removing, filtration and precipitation in purpose ceramic-film filter; Enter in water cooling pond after being cooled by cooling tower finally by the water after purpose ceramic-film filter filtration and store again to reuse.
Chemical oil remover in the present embodiment 8, and the corresponding supporting enforcement such as dosing, sludge treatment conveying, the effect of chemical oil remover is the iron scale and the suspended substance that remove subparticle in continuous casting turbid circulating water further, and is removed by oil by adding degreaser.8 chemical oil removers divide two arrangements to put, and a total rising pipe is established in the centre of two rows, and the water outlet of 8 chemical oil removers all taps on this root house steward; Water inlet is arranged in the outside of 8 chemical oil removers, and each water inlet arranges a water intaking valve and controls flooding velocity, enters core barrel 1 meter of and is provided with a line mixer, the front and back of line mixer are provided with chemical feed pipe at water inlet pipe; Each chemical oil remover is provided with two cover spiral slurry conveying machines, specializes in spoil disposal and uses; Influent quality condition is: suspended substance≤150-200mg/l, oil≤50mg/l; Effluent quality: suspended substance≤30mg/l, oil≤5mg/l.
Electrochemical deoiling adds chemical agent, makes the suspended substances such as the oils in water, iron scale out settlement separate by cohesion, throwing out, reach the object purified water after mixing tank reaction.The medicament added totally two kinds, separately add, the first belongs to flocculation agent, and add before water inlet pipe line mixer, the second is oil flocculant, adds after water inlet pipe line mixer.Sewage after dispensing enters the core barrel reaction chamber at rear portion, top overflow is had to enter tube settling room through the reacted sewage of core barrel, oil-in-water class (oil slick and oil in water emulsion) and suspended substance are through the cohesion of medicament, throwing out forms macrobead wadding flower and is deposited in the mud-removing bucket of bottom, top clear water is through overflow weir, and rising pipe is discharged and entered outfall sewer; The mud of bottom precipitation is exported by spiral slurry conveying machine and enters suction pit, and mud force (forcing) pump directly carries steel-smelting sewage sludge treatment system to process.
Chemical oil remover integrates reaction, precipitation, spoil disposal, simple to operate and non-secondary pollution.Horizontal sedimentation tank spoil disposal directly enters Whirlwind tank, makes water quality become poorer and poorer, and the oil slick of horizontal sedimentation tank is collected with dragging oil machine, and effect is poor, also pollutes a slice environment.Chemical oil remover compares in table 1 with horizontal sedimentation tank.
Table 1 chemical oil remover compares with horizontal sedimentation tank
As can be seen from Table 1, chemical oil remover and horizontal sedimentation tank be compared as follows advantage: (1) stable effluent quality, shock-resistant ability is strong; (2), without the need to large maintenance, within 2 years, change an inclined tube; (3) sludge discharge effects is good, without the need to the clear pond of annual overhaul; (4) free from environmental pollution.
Purpose ceramic-film filter in the present embodiment is a kind of novel, efficient Water treatment filtration environmental protection equipment.The core component of this equipment is ceramic membrane filter tube, and it carries out scientific formula with the plurality of raw materials such as rare earth, zirconium white, through operations such as biscuiting, pulverizing, classification, shaping, maskings, forms a kind of stereoscopic graticule pore structure microporous membrane by high-temperature calcination.Ceramic membrane filter tube has the features such as physical strength is high, acidproof, alkaline-resisting, regenerative power is strong.Purpose ceramic-film filter has three rooms, and upper strata is gathering room, and middle level is filtration chamber, and lower floor is slag pocket.Fluid inlet and oil discharge outlet is provided with at gathering room.Filter locular wall and be provided with liquid outlet, slag pocket is provided with soil cleaning port and sewage draining exit and coil pipe of removing contamination is housed.Each mouth of pipe is installed the valve of dimension for regulating pondage.Three indoor are all provided with manhole for installing and maintenance.
Purpose ceramic-film filter 7 parallel runnings of the present embodiment, can process the water yield of 2000m3/h simultaneously, can manual operation, also can chain automatic control.The continuous casting turbid circulating water that hot tub is sent here enters gathering room from fluid inlet and entrained oil is all gathered in gathering room top layer, and productive set, to time a certain amount of, is regularly discharged by oil discharge outlet.Continuous casting turbid circulating water, under the effect of hot tub major axis topping-up pump, through ceramic membrane filter tube micropore permeation to filtration chamber, is discharged through liquid outlet, is retained down by impurity simultaneously and is deposited on slag pocket, discharge suction pit of making a gift to someone when concentrating a certain amount of through sewage draining exit.Purpose ceramic-film filter is in the process run, and partial suspended thing is attached to vitrified pipe on the surface and can reduce flow pressure reduction is increased, and at this moment unlatching backwashing pump carries out back flushing, and backwashing time is depending on effluent quality.
Ceramic membrane filter tube has that specific surface area is large, filtration resistance is little, adds the touch opportunity of impurities in water particle and the adsorptive power of filtrate, the restriction that the filtering accuracy having broken particulate filter can not reduce further due to particle diameter of filter medium.Thus improve filtration efficiency and retaining power; Due to purpose ceramic-film filter can regeneration washing and recover cut a dirty performance, strainability is not decayed in time; Formed by high-temperature calcination, nucleus equipment ceramic membrane filter tube lifetime reaches more than 5a.Purpose ceramic-film filter compares in table 2 with quartz filter.
Table 2 purpose ceramic-film filter compares with quartz filter
As can be seen from Table 2, purpose ceramic-film filter has the following advantages than quartz filter: (1) efficiency is high; (2) maintenance cost is low, does not substantially need at ordinary times to safeguard; (3) the advantage such as effluent quality is good.But purpose ceramic-film filter has its weak point: (1) Meteorological is higher first; (2) regeneration washing will go up separately a set of special regeneration washing system, produce certain expense.
The continuous casting turbid circulating water process Optimization Technology Be very effective of " chemical oil remover+purpose ceramic-film filter " of the present embodiment, main following points: (1) chemical oil remover solves horizontal flow basin floor space greatly, the problem of oil removing oil removal weak effect; (2) purpose ceramic-film filter solves quartz filter to process continuous casting turbid circulating water weak effect, needs every year to change filtrate, the problem of great contaminate environment; (3) the optimization of sludge system solves the spoil disposal of horizontal sedimentation tank and quartz filter backwashing water and enters again Whirlwind tank and recycle, and makes water quality problem worse and worse.The water-quality ratio of continuous casting turbid circulating water water supply quality of the present invention and traditional technology is comparatively in table 3.
Table 3 continuous casting turbid circulating water water-quality ratio comparatively
As can be seen from Table 3, the main water-quality guideline suspended substance of continuous casting turbid circulating water treatment process of the present invention, oil are all fine, ensure that the water supply quality of continuous casting turbid circulating water, ensure that normally carrying out of production.Illustrate that " chemical oil remover+purpose ceramic-film filter " treatment process operating performance to continuous casting turbid circulating water is better.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. a continuous casting turbid circulating water treatment system, it is characterized in that: described treatment system is disposed with Whirlwind tank according to the processing sequence of continuous casting turbid circulating water, chemical oil remover, hot tub, purpose ceramic-film filter, cooling tower and water cooling pond, described Whirlwind tank is used for carrying out solid-liquid separation to continuous casting turbid circulating water, lift pump is provided with between described Whirlwind tank and chemical oil remover, described hot tub is used for the oily water separation in accelerating liquid, the hot water pump for being sent into by the liquid in hot tub in purpose ceramic-film filter is also provided with between described hot tub and purpose ceramic-film filter, water after described purpose ceramic-film filter filters enters in water cooling pond and stores again to reuse after cooling tower cooling.
2. continuous casting turbid circulating water treatment system according to claim 1, it is characterized in that: described continuous casting turbid circulating water treatment system also comprises suction pit, mud in described chemical oil remover and purpose ceramic-film filter enters in suction pit by pipeline, and the mud in described suction pit is entered in steel-smelting sewage sludge treatment system by slush pump.
3. continuous casting turbid circulating water treatment system according to claim 1, it is characterized in that: described purpose ceramic-film filter comprises three rooms, upper strata is gathering room, and middle level is filtration chamber, and lower floor is slag pocket; Fluid inlet and oil discharge outlet is provided with at gathering room; Filter locular wall and be provided with liquid outlet, slag pocket is provided with soil cleaning port and sewage draining exit.
4. utilize the arbitrary described continuous casting turbid circulating water treatment system of claim 1-3 to carry out the technique processed, it is characterized in that: comprise the steps: first, the continuous casting turbid circulating water with iron scale and grease is incorporated in Whirlwind tank by sluice and precipitates; Then, utilize lift pump by the Liquid transfer in Whirlwind tank in chemical oil remover, in chemical oil-discharging device, add flocculation agent and oil flocculant make oils in water and suspended substance cohesion, clear water chemically oil eliminator top overflow, macrobead wadding flower is deposited in the mud-removing bucket of chemical oil remover bottom, center; The clear water overflowed enters in hot tub and accelerates oily water separation; Then by hot water pump, the water in hot tub is incorporated into further oil removing, filtration and precipitation in purpose ceramic-film filter; Enter in water cooling pond after being cooled by cooling tower finally by the water after purpose ceramic-film filter filtration and store again to reuse.
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| CN201410531187.8A CN104261609A (en) | 2014-10-10 | 2014-10-10 | Continuous casting turbid circulating water treatment system and technology |
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| CN201410531187.8A CN104261609A (en) | 2014-10-10 | 2014-10-10 | Continuous casting turbid circulating water treatment system and technology |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986893A (en) * | 2015-07-03 | 2015-10-21 | 江苏永钢集团有限公司 | Steelmaking cooling water purifying and recycling device |
| CN108911238A (en) * | 2018-07-13 | 2018-11-30 | 山西太钢不锈钢股份有限公司 | A kind of continuous casting secondary cooling water adding of agent method |
| CN108947001A (en) * | 2018-06-27 | 2018-12-07 | 张家港浦项不锈钢有限公司 | A kind of low chlorine ion stainless steel continuous casting secondary cooling water system |
| CN109205910A (en) * | 2018-11-22 | 2019-01-15 | 宝钢工程技术集团有限公司 | Compact turbid circulating water treating stations |
| CN110590048A (en) * | 2019-09-20 | 2019-12-20 | 中冶东方工程技术有限公司 | Continuous casting turbid circulating water treatment equipment and method |
| CN111825293A (en) * | 2019-04-19 | 2020-10-27 | 辽宁海蓝科技工程有限公司 | Sludge-water separation process for cyclone tank of steel mill |
| RU2756498C1 (en) * | 2021-02-24 | 2021-10-01 | Магомет Абубекирович Конов | Method for obtaining organomineral fertilizer from wash washer waste water with their simultaneous disposal |
| CN114272677A (en) * | 2021-11-17 | 2022-04-05 | 新兴铸管股份有限公司 | Rolling molten steel treatment system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986893A (en) * | 2015-07-03 | 2015-10-21 | 江苏永钢集团有限公司 | Steelmaking cooling water purifying and recycling device |
| CN108947001A (en) * | 2018-06-27 | 2018-12-07 | 张家港浦项不锈钢有限公司 | A kind of low chlorine ion stainless steel continuous casting secondary cooling water system |
| CN108911238A (en) * | 2018-07-13 | 2018-11-30 | 山西太钢不锈钢股份有限公司 | A kind of continuous casting secondary cooling water adding of agent method |
| CN109205910A (en) * | 2018-11-22 | 2019-01-15 | 宝钢工程技术集团有限公司 | Compact turbid circulating water treating stations |
| CN111825293A (en) * | 2019-04-19 | 2020-10-27 | 辽宁海蓝科技工程有限公司 | Sludge-water separation process for cyclone tank of steel mill |
| CN110590048A (en) * | 2019-09-20 | 2019-12-20 | 中冶东方工程技术有限公司 | Continuous casting turbid circulating water treatment equipment and method |
| RU2756498C1 (en) * | 2021-02-24 | 2021-10-01 | Магомет Абубекирович Конов | Method for obtaining organomineral fertilizer from wash washer waste water with their simultaneous disposal |
| CN114272677A (en) * | 2021-11-17 | 2022-04-05 | 新兴铸管股份有限公司 | Rolling molten steel treatment system |
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Application publication date: 20150107 |