CN111701286B - High-efficient separation clarification processing apparatus of sintering flue gas desulfurization waste water - Google Patents
High-efficient separation clarification processing apparatus of sintering flue gas desulfurization waste water Download PDFInfo
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- CN111701286B CN111701286B CN202010450358.XA CN202010450358A CN111701286B CN 111701286 B CN111701286 B CN 111701286B CN 202010450358 A CN202010450358 A CN 202010450358A CN 111701286 B CN111701286 B CN 111701286B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0087—Settling tanks provided with means for ensuring a special flow pattern, e.g. even inflow or outflow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The application belongs to the technical field of treatment and recycling of sintering flue gas desulfurization wastewater, and relates to a high-efficiency separation and clarification treatment device for the sintering flue gas desulfurization wastewater, wherein the separation and clarification treatment device comprises an outer cylinder body, a central cylinder body and a lifting assembly, wherein the outer cylinder body, the central cylinder body and the lifting assembly are coaxially sleeved from outside to inside by taking a vertical direction as a central axis, and the lower end of the lifting assembly divides the interior of the outer cylinder body into a water distribution area and a sedimentation area which can be controlled to be opened and closed; the waste water enters the lifting assembly, overflows from an overflow port of the lifting assembly and enters the central cylinder, flows through the central cylinder and enters a water distribution area of the outer cylinder, and is filtered by a pipe chute filler and overflows from a water outlet of the outer cylinder to be discharged; the large-particle suspended matters are settled to the bottom of the settling zone for removal. The treatment capacity of the device is 3-5 times that of a horizontal sedimentation tank, the speed-up clarifier is 2-3 times that of the horizontal sedimentation tank, the application range is wide, the treatment effect is high, and the occupied area is small.
Description
Technical Field
The application belongs to the technical field of treatment and recycling of sintering flue gas desulfurization wastewater, and particularly relates to a high-efficiency separation and clarification treatment device for sintering flue gas desulfurization wastewater and a sintering flue gas desulfurization wastewater pretreatment system.
Background
The application of sintering flue gas wet desulfurization (limestone/gypsum method) technology is a main means for controlling sulfide emission in power plants and steel industries, and is to control sulfur dioxide (SO) 2 ) An important way of discharging. In the wet desulfurization (limestone/gypsum method) process of the sintering flue gas, heavy metal elements, fluoride ions, chloride ions and the like can be enriched, and in order to maintain the balance of substances in the slurry circulation system of the desulfurization device, the concentration of chloride ions and fluoride ions which are soluble parts in the flue gas are preventedBeyond the specified value and ensuring the gypsum quality, a part of the filtrate water must be discharged from the system as desulfurization waste water, which mainly comes from the gypsum dewatering and cleaning system, on the one hand reduces the corrosion to the desulfurization equipment and on the other hand reduces the influence on the gypsum quality. In order to protect the environment, prevent and treat pollution and promote the progress of wastewater technology and pollution treatment technology, the wastewater discharge standard of power plants and steel industries is continuously updated, and the effluent quality of the existing wastewater treatment system needs to meet the wastewater pollutant discharge standard of the steel industry (GB 13456-2012) or reach the wastewater zero discharge standard.
The wet limestone/lime-gypsum desulfurization waste water mainly comes from the underflow of a solid-liquid separation tank of a gypsum cyclone station and a vacuum belt dehydrator, the temperature of the waste water is 20-60 ℃, the pH value is 4-6, the solid content is 60000-80000mg/l, and the Cl - 20000-40000mg/l SO 4 2- 3700-5000mg/l SO 3 2- 0-200 mg/l, 500-700mg/l ammonia nitrogen and 1200-1500mg/l COD, thus the water quality of the wastewater is characterized as follows: the wastewater presents weak acidity, and the PH is generally 4.0 to 6.0; the suspended matters in the wastewater are mainly gypsum particles, silicon dioxide and hydroxides of iron and aluminum; contains ammonia nitrogen; the inorganic salt content is high, such as sulfate, chloride and the like; the COD value in the wastewater is higher.
Pretreatment of desulfurization wastewater is generally performed mainly by separating heavy metals and other precipitable substances such as fluoride, sulfite and sulfate by chemical and mechanical methods. In order to ensure that the quality of the effluent reaches the standard, the general desulfurization wastewater process flow adopts neutralization, flocculation, coagulation aiding and filtration, and flocculant polyaluminium chloride and coagulant aid polyacrylamide are respectively added after neutralization, so that the inorganic salt, heavy metal complex and fine alum of suspended matters which are separated out through crystallization are accumulated into larger particles, and faster sedimentation is conveniently obtained in a mechanical acceleration clarifier. The clarifier is particularly important in the wastewater treatment process, and the improvement of the separation effect of the clarifier is an important means for improving the water purification effect of wastewater treatment equipment. The traditional clarifier mainly comprises a diversion device, so that the rising flow rate is reduced, the residence time is prolonged, but the defects of overlarge volume, poor filtering effect, higher failure rate, high overall cost of wastewater treatment equipment and the like exist.
In view of this, the present application has been made.
Disclosure of Invention
The application aims to solve the technical problem of providing a high-efficiency separation and clarification treatment device for sintering flue gas desulfurization wastewater, which can at least solve one technical defect.
The basic conception of the technical scheme adopted by the application is as follows:
the high-efficiency separation and clarification treatment device for the sintering flue gas desulfurization wastewater comprises an outer cylinder body, a central cylinder body and a lifting assembly, wherein the outer cylinder body, the central cylinder body and the lifting assembly are coaxially sleeved from outside to inside by taking the vertical direction as a central shaft;
the outer cylinder body is provided with a water inlet and a water outlet, the water inlet is positioned at the lower part of the outer cylinder body and is communicated with the inside of the lifting assembly through a water inlet pipe, and the water outlet is positioned at the upper part of the outer cylinder body;
the lower end of the central cylinder body is provided with an opening, and the opening at the lower end of the central cylinder body enables the interior of the central cylinder body to be communicated with the interior of the outer cylinder body;
an overflow port is arranged on the side surface of the upper part of the lifting assembly, the lower end of the lifting assembly is provided with an opening, and the lower end wall of the lifting assembly is abutted against or separated from the inner wall of the outer cylinder body by controlling the lifting assembly, so that the inner part of the outer cylinder body is divided into a water distribution area and a sedimentation area which can be controlled to be switched on and off;
the settling zone is located below the lower end opening of the lifting assembly.
As an implementation mode, the top of the outer cylinder body is provided with an electric lifting valve group, and the output end of the electric lifting valve group is connected with the upper end of the lifting assembly so as to drive the lifting assembly to move up and down along the vertical direction.
As an implementation mode, the sedimentation area is provided with a mud discharging opening and an outward discharging valve, the electric lifting valve group is in linkage with the outward discharging valve, the outward discharging valve is opened, and the electric lifting valve group drives the lifting assembly to move upwards so as to enable the water distribution area to be communicated with the sedimentation area.
As an implementation mode, a flow guiding element is arranged above the outlet of the water inlet pipe and used for slowing down the water flow speed from the water inlet pipe, and the flow guiding element is a conical reflecting plate.
As an implementation mode, the water distribution area is provided with inclined pipe filler in the area between the water outlet of the outer cylinder and the lower end of the central cylinder;
a circle of triangular weir is arranged on the inner wall of the outer cylinder above the water outlet end of the inclined tube filler, and liquid flowing out from the water outlet of the inclined tube filler is discharged from the water outlet of the outer cylinder after passing through the triangular weir.
As an embodiment, the outer cylinder body comprises a cylinder body section positioned at the upper part and a reverse cone section positioned at the lower part, and an included angle alpha formed by the connection part of the cylinder body section and the reverse cone section is 135 degrees.
As one embodiment, the central cylinder is a cylinder, and the lower end of the cylinder of the central cylinder is flush with the lower end of the cylinder section of the outer cylinder;
the lifting assembly includes a cylindrical structure and an opening of a bell-mouth structure extending obliquely downward from a lower end of the cylindrical structure.
As an embodiment, the volume of the settling zone and the lifting assembly is 1/5 of the total volume of the separation clarification device.
As an implementation mode, the inclined tube filler is formed by welding a plurality of hexagonal honeycomb tubes with hexagonal cross sections, the hexagonal honeycomb tubes are made of ethylene-propylene copolymer materials, the tube length is 1m, the aperture of an inscribed circle is phi 30mm, and the inclination angle is 60 ℃.
The application also relates to a pretreatment system for sintering flue gas desulfurization wastewater, which comprises the separation and clarification treatment device.
The technical scheme provided by the application has the following beneficial effects:
1. the high-efficiency separation and clarification treatment device for the sintering flue gas desulfurization wastewater has the treatment capacity which is 2-5 times that of a horizontal sedimentation tank or an acceleration clarification tank, reduces the volume, saves the occupied area and reduces the overall cost of wastewater treatment equipment. The residence time of the separation clarification treatment device is 1.2-1.3 times of that of a horizontal sedimentation tank or an accelerated clarification tank, so that the sediment removal efficiency is ensured, and the sediment removal rate can be controlled between 90% and 95%.
2. The separation clarification treatment device has the advantages of simple structure, flexible and efficient operation and difficult abrasion of parts.
3. The separation clarification treatment device is not easy to block, reduces the installation of the traditional high-efficiency clarifier mud scraper, and has low maintenance failure rate.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
Wherein:
FIG. 1 is a schematic diagram of a separation clarification device according to the present application;
FIG. 2 is a top view of the separation clarification device of FIG. 1;
FIG. 3 is a schematic view of the structure of an overflow port in the separation clarification device of FIG. 1.
The marks in the figure: 1. an electric lifting valve group; 2. a lifting assembly; 3. an overflow port; 4. a water outlet; 5. triangular weir; 6. a water distribution area; 7. a water inlet pipe; 8. a water inlet; 9. a central cylinder; 10. an outer cylinder; 11. a conical reflecting plate; 12. a settling zone; 13. a mud discharging port; 14. an outer discharge valve; 15. and (5) inclined tube filling.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
1-3, according to an embodiment of the present application, there is provided a high-efficiency separation and clarification treatment device for sintering flue gas desulfurization wastewater, which includes an outer cylinder 10 coaxially sleeved from outside to inside with a vertical direction as a central axis, a central cylinder 9, and a lifting assembly 2; the space between the outer cylinder 10 and the center cylinder 9 and other spaces within the outer cylinder 10 are hereinafter collectively referred to as the inside of the outer cylinder 10; the space between the central cylinder 9 and the lifting assembly 2 is hereinafter referred to collectively as the interior of the central cylinder 9.
The outer cylinder 10 is provided with a water inlet 8 and a water outlet 4, the water inlet 8 is positioned below the lower end of the central cylinder 9 and is communicated with the inside of the lifting assembly 2 through a water inlet pipe 7, and the water outlet 4 is positioned at a position close to the top of the outer cylinder 10;
the lower end of the central cylinder 9 is provided with an opening and is communicated with the inside of an outer cylinder 10 positioned outside the central cylinder 9 through the opening;
the side surface of the lifting assembly 2, which is close to the top of the lifting assembly, is provided with an overflow port 3, the lower end of the lifting assembly 2 is opened, the lower end wall of the lifting assembly 2 is abutted against or separated from the inner wall of the outer cylinder 10 by controlling the lifting assembly 2, and the inside of the outer cylinder 10 is divided into a water distribution area 6 and a sedimentation area 12, wherein the water distribution area is controllable to be switched on and switched off;
the sedimentation zone 12 is positioned below the lower end opening of the lifting assembly 2 and is provided with a mud discharge opening 13 and an external discharge valve 14; the water distribution area 6 is provided with a pipe chute filler 15 in the area between the water outlet 4 of the outer cylinder 10 and the lower end of the central cylinder 9.
The liquid (waste water) to be treated can enter the high-efficiency separation and clarification device through the water inlet 8 of the outer cylinder body 10 by pumping or overflow by means of a height difference (the liquid level of the former process is higher than that of the high-efficiency separation and clarification device).
The treatment capacity of the separation clarification treatment device is 2-5 times of that of a horizontal sedimentation tank or an acceleration clarification tank, so that the occupied area is saved, the capacity of a clarifier is reduced, and the equipment cost is reduced. The retention time is 1.2-1.3 times of that of a horizontal sedimentation tank or an accelerated sedimentation tank, the sediment removal efficiency is ensured, and the sediment removal rate can be controlled between 90% and 95%. In addition, the device has the advantages of simple structure, flexible and efficient operation, difficult abrasion of parts and low maintenance failure rate.
The waste water flowing out from the lower end opening of the central cylinder 9 enters the water distribution area 6, the flow speed is reduced, the residence time is increased, meanwhile, the inclined tube filler 15 is arranged on the upper portion of the water distribution area 6, the waste water flows upwards through the surface of the inclined tube filler 15, on one hand, the sedimentation distance is reduced, on the other hand, the surface area of the clarifier is increased, the attachment point of sediment is promoted, the clarification time is shortened, and the concentration of water-quality suspended matters of the discharged water is ensured. In addition, the inclined tube filler 15 is convenient and simple to replace.
The upper end of the central cylinder 9 extends to the upper end cover of the outer cylinder 10 and can be connected with the upper end cover of the outer cylinder 10 in a welding mode.
As an embodiment, the top of the outer cylinder 10 is provided with an electric lifting valve group 1, and the output end of the electric lifting valve group 1 is connected with the upper end of the lifting assembly 2 to drive the lifting assembly 2 to move up and down along the vertical direction, so that the water distribution area 6 and the sedimentation area 12 are separated and communicated by controlling the lifting assembly 2 to move up and down.
As an embodiment, the electric lifting valve group 1 is arranged in linkage with the discharge valve 14, the discharge valve 14 is opened, and the electric lifting valve group 1 drives the lifting assembly 2 to move upwards.
The above arrangement is convenient for discharging the sediment at the bottom of the water distribution area 6 and the sediment of the sedimentation area 12 together through the discharge valve 14, the structure is exquisite, auxiliary elements are saved, the whole structure of the device is more compact, and the occupied area is reduced.
As an embodiment, a flow guiding element is arranged above the outlet of the water inlet pipe 7, and the flow guiding element is a conical reflecting plate 11.
The mode that waste water got into separation clarification processing apparatus generally has two kinds, and one kind is that the pump is beaten into, and one kind is that the mode is beaten into to the pump, because the lift pressure is too big, can arouse the violent stirring of exit waste water of inlet tube 7, and then influence the sedimentation effect of waste water, the toper reflecting plate can play fine cushioning effect, and then can adapt to two kinds of entering modes of waste water simultaneously, guarantees sedimentation effect.
Specifically, the conical reflecting plate 11 is a hollow cone (or umbrella-shaped) with the top point of the cone facing upwards, and the inner surface of the cone faces the outlet of the water inlet pipe 7, so that the water flowing out of the water inlet pipe 7 contacts the inner surface of the cone first, and the water flow speed is buffered.
As an implementation mode, the water distribution area 6 is provided with a pipe chute filler 15 in the area between the water outlet 4 of the outer cylinder 10 and the lower end of the central cylinder 9; a circle of triangular weir 5 is arranged on the inner wall of the outer cylinder body 10 above the water outlet end of the inclined tube filler 15, and the liquid flowing out of the water outlet end of the inclined tube filler 15 is discharged from the water outlet 4 of the outer cylinder body 10 after passing through the triangular weir 5.
Specifically, the water outlet 4 is a small hole formed in the outer cylinder 10, and discharges the liquid through a connecting pipe.
The triangular weir 5 arranged as described above can block large suspended matters from overflowing and entering the next process section.
As an embodiment, the outer cylinder 10 comprises a cylinder section at the upper part and a cone section at the lower part, and the included angle alpha formed by the connection of the cylinder section and the inverted cone section is 135 degrees.
The angle setting can guarantee that the precipitate sinks smoothly, and equipment is difficult for blockking up, reduces the mud scraper that is arranged in traditional high-efficient clarifier and necessary, and then reduces the fault rate of equipment.
As one embodiment, the central cylinder 9 is a cylinder, and the lower end opening of the cylinder of the central cylinder 9 is flush with the lower end of the cylinder section of the outer cylinder 10;
the lifting assembly 2 comprises a cylindrical structure and a horn-shaped opening extending downwards obliquely from the lower end of the cylindrical structure, wherein the lower end of the horn-shaped structure is abutted against the inner wall of the inverted cone section of the outer cylinder body 10.
The above-mentioned structure setting of lifting assembly 2 and outer barrel 10 is convenient for realize the segmentation and the intercommunication of cloth water district, subsidence area 12, reduces auxiliary structure's setting, still is favorable to the subsidence and the discharge of precipitate more moreover. In the state that the sedimentation zone is separated from the water distribution zone, a horn-shaped opening extending from the lower end of the cylindrical structure of the lifting assembly 2 and the area surrounded by the inverted cone-shaped body wall of the outer cylinder 10 below the horn-shaped opening are the sedimentation zone; the water distribution area is a water distribution area 6 which is defined by the outer wall of the horn-shaped opening, the outer wall of the central cylinder body 9 and the inner wall of the outer cylinder body 10 positioned above the outer wall of the horn-shaped opening.
As an embodiment, the volume of the sedimentation zone 12 and the lifting assembly 2 is 1/5 of the total volume of the separation clarification device.
The wastewater enters the sedimentation zone 12 and the lifting assembly 2 from the water inlet pipe 7, and 40-50% of large-particle suspended matters in the wastewater can be settled to the bottom of the sedimentation zone 12 for removal.
As an implementation mode, the inclined tube filler is formed by welding a plurality of hexagonal honeycomb tubes with hexagonal cross sections, the hexagonal honeycomb tubes are made of ethylene-propylene copolymer materials, the tube length is 1m, the aperture of an inscribed circle is phi 30mm, and the inclination angle is 60 ℃.
The inclined tube filler 15 has large wet circumference, small hydraulic radius, good laminar flow state, no turbulent flow interference on particle sedimentation and optimal water quality.
The working flow of the separation and clarification device is approximately as follows:
the waste water enters the separating and clarifying treatment device from the water inlet pipe 7 arranged at the water inlet 8, the waste water flowing out from the outlet of the water inlet pipe 7 flows into the lifting assembly 2 after being guided by the conical reflecting plate 11, overflows from the overflow port 3 of the lifting assembly 2 and enters the central cylinder 9 after flowing through the lifting assembly 2, enters the water distribution area 6 of the outer cylinder 10 from the lower end opening of the central cylinder 9 after flowing through the central cylinder 9, is filtered by the inclined tube filling 15 after passing through the water distribution area 6, overflows from the triangular weir 5 at the edge of the outer cylinder 10 and is discharged from the water outlet 4, and enters the next process section for subsequent treatment.
40-50% of large-particle suspended matters in the wastewater can be settled to the bottom of the settling zone 12 for removal;
the separation clarification treatment device periodically opens an outward valve 14 to discharge sediment, the outward valve 14 is opened, the electric lifting valve group 1 is opened at the same time, the electric lifting valve group 1 lifts the lifting assembly 2 by 5-10cm so as to be communicated with the water distribution area 6 and the sedimentation area 12, and sediment at the bottom of the water distribution area 6 sinks into the sedimentation area 12 through a gap at the juncture of the lifting assembly 2 and the water distribution area 6 and is discharged outward together with sediment in the sedimentation area 12 through the outward valve 14.
The application also relates to a pretreatment system for sintering flue gas desulfurization wastewater, which comprises the separation and clarification treatment device.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application as defined by the appended claims.
Claims (8)
1. The high-efficiency separation and clarification treatment device for the sintering flue gas desulfurization wastewater is characterized by comprising an outer cylinder body, a central cylinder body and a lifting assembly, wherein the outer cylinder body, the central cylinder body and the lifting assembly are coaxially sleeved from outside to inside by taking the vertical direction as a central shaft;
the outer cylinder body is provided with a water inlet and a water outlet, the water inlet is positioned at the lower part of the outer cylinder body and is communicated with the inside of the lifting assembly through a water inlet pipe, and the water outlet is positioned at the upper part of the outer cylinder body;
the lower end of the central cylinder body is provided with an opening, and the opening at the lower end of the central cylinder body enables the interior of the central cylinder body to be communicated with the interior of the outer cylinder body;
an overflow port is arranged on the side surface of the upper part of the lifting assembly, the lower end of the lifting assembly is provided with an opening, and the lower end wall of the lifting assembly is abutted against or separated from the inner wall of the outer cylinder body by controlling the lifting assembly, so that the inner part of the outer cylinder body is divided into a water distribution area and a sedimentation area which can be controlled to be switched on and off;
the sedimentation area is positioned below the lower end opening of the lifting assembly; a flow guiding element is arranged above the outlet of the water inlet pipe and used for slowing down the water flow speed from the water inlet pipe, and the flow guiding element is a conical reflecting plate;
the top of outer barrel is equipped with electric lift valves, electric lift valves's output with the upper end of lifting means is connected, so as to drive lifting means reciprocates along vertical direction.
2. The separation and clarification device according to claim 1, wherein the sedimentation zone is provided with a sludge outlet and an outward valve, the electric lifting valve group is arranged in linkage with the outward valve, the outward valve is opened, and the electric lifting valve group drives the lifting assembly to move upwards so as to communicate the water distribution zone with the sedimentation zone.
3. The separation and clarification treatment device according to claim 1, wherein the water distribution area is provided with a pipe chute filler in a region between the water outlet of the outer cylinder and the lower end of the central cylinder;
a circle of triangular weir is arranged on the inner wall of the outer cylinder above the water outlet end of the inclined tube filler, and liquid flowing out from the water outlet of the inclined tube filler is discharged from the water outlet of the outer cylinder after passing through the triangular weir.
4. The separation and clarification treatment device according to claim 1, wherein the outer cylinder comprises a cylinder section at the upper part and a reverse cone section at the lower part, and the included angle α formed by the connection of the cylinder section and the reverse cone section is 135 °.
5. The separation clarification device according to claim 4, wherein the central cylinder is a cylinder, the lower end of the cylinder of the central cylinder being flush with the lower end of the cylinder section of the outer cylinder;
the lifting assembly includes a cylindrical structure and an opening of a bell-mouth structure extending obliquely downward from a lower end of the cylindrical structure.
6. The separation clarification device of claim 1, wherein the volume of said settling zone and said lifting assembly is 1/5 of the total volume of said separation clarification device.
7. The separation and clarification treatment device according to claim 3, wherein the inclined tube filler is formed by welding a plurality of hexagonal honeycomb tubes with hexagonal cross sections, the hexagonal honeycomb tubes are made of ethylene-propylene copolymer, the tube length is 1m, the aperture of an inscribed circle is phi 30mm, and the inclination angle is 60 ℃.
8. A pretreatment system for sintering flue gas desulfurization wastewater, comprising the separation clarification device according to any one of claims 1 to 7.
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| CN202010450358.XA CN111701286B (en) | 2020-05-25 | 2020-05-25 | High-efficient separation clarification processing apparatus of sintering flue gas desulfurization waste water |
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| CN202010450358.XA CN111701286B (en) | 2020-05-25 | 2020-05-25 | High-efficient separation clarification processing apparatus of sintering flue gas desulfurization waste water |
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| CN212700680U (en) * | 2020-05-25 | 2021-03-16 | 北京中航泰达环保科技股份有限公司 | Sintering flue gas desulfurization waste water high-efficient separation clarification processing apparatus and pretreatment system |
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2020
- 2020-05-25 CN CN202010450358.XA patent/CN111701286B/en active Active
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| GB1221815A (en) * | 1968-05-02 | 1971-02-10 | Appbau Rothemuehle Brandt | Improvements in or relating to wet-type dust precipitators for purifying gases |
| CN101921026A (en) * | 2010-04-16 | 2010-12-22 | 宜兴市鑫峰环保设备有限公司 | Integrated high-efficiency sewage treatment device |
| JP2012125716A (en) * | 2010-12-16 | 2012-07-05 | Japan Organo Co Ltd | Flocculation sedimentation apparatus |
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