CN213375259U - High-efficient desulfurization waste water precipitation equipment - Google Patents
High-efficient desulfurization waste water precipitation equipment Download PDFInfo
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- CN213375259U CN213375259U CN202021305499.4U CN202021305499U CN213375259U CN 213375259 U CN213375259 U CN 213375259U CN 202021305499 U CN202021305499 U CN 202021305499U CN 213375259 U CN213375259 U CN 213375259U
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Abstract
The utility model discloses a high-efficient desulfurization waste water precipitation equipment, include: the pretreatment unit is used for connecting a wastewater outlet of the desulfurization absorption tower and the reaction tank, the wastewater outlet of the pretreatment unit is communicated with a water inlet of the reaction tank, and a dosing system is arranged in the reaction tank; the sedimentation tank comprises a clear water area, a diversion area, a feeding area and a sedimentation area which are sequentially arranged from top to bottom; the outlet of the reaction tank is communicated with the feeding area, the clear water area is provided with a water outlet, the bottom of the settling area is provided with a sludge discharge port, a plurality of uniformly distributed inclined drainage devices are arranged in the drainage area, one ends of the inclined drainage devices are communicated with the feeding area, and the other ends of the inclined drainage devices are communicated with the clear water area. Can effectively improve the precipitation efficiency and the wastewater treatment capacity.
Description
Technical Field
The utility model relates to an environmental protection field, specificly relate to a high-efficient desulfurization waste water precipitation equipment.
Background
The desulfurization waste water treatment refers to a process of purifying desulfurization waste water to make the wastewater reach the water quality requirement of drainage or reuse. In the slurry circulation process of the flue gas desulfurization device of the coal-fired boiler, impurities such as heavy metal elements, chloride ions and the like in the flue gas can be gradually enriched in the desulfurization wastewater. In order to maintain the balance of the materials of the slurry circulation system of the desulfurization apparatus, prevent the corrosion of desulfurization equipment and ensure the quality of gypsum, a certain amount of wastewater must be discharged from the system. The existing desulfurization wastewater treatment generally comprises modes of directly discharging to a slag flushing system, spraying in a coal yard, settling in a gravity settling tank and the like.
In the existing gravity sedimentation tank sedimentation device, the desulfurization wastewater flowing out of a water inlet comprises precipitable suspended solids and floatable scum, the operation and maintenance cost is high, the treatment effect is poor, the floatable scum in the wastewater can not be well removed, and the standard discharge of the desulfurization wastewater can not be realized.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a high-efficient desulfurization waste water precipitation equipment can improve precipitation efficiency to effectively get rid of the interior floated dross of sedimentation tank.
According to the utility model discloses high-efficient desulfurization waste water precipitation equipment, include:
and the pretreatment unit is used for connecting the outlet of the gypsum slurry pool of the desulfurization absorption tower.
The water outlet of the pretreatment unit is communicated with the water inlet of the reaction tank, and a dosing system is arranged in the reaction tank;
the sedimentation tank comprises a clear water area, a diversion area, a feeding area and a sedimentation area which are sequentially arranged from top to bottom; the outlet of the reaction tank is communicated with the feeding area, the clear water area is provided with a water outlet, and the bottom of the settling area is provided with a sludge outlet;
the inclined drainage devices are uniformly and horizontally distributed in the drainage area, one end of each inclined drainage device is communicated with the feeding area, and the other end of each inclined drainage device is communicated with the clear water area.
According to the utility model discloses high-efficient desulfurization waste water precipitation equipment has following technological effect at least: the utility model discloses embodiment sends into the reaction tank with the exhaust desulfurization waste water of pretreatment unit, through adding the medicine, gets into the sedimentation tank after the stirring. The lower part of the clear water area of the sedimentation tank is provided with a flow guide area, the flow guide area is internally provided with an inclined flow guide device, when water flows upwards along the inclined flow guide device, suspended impurities in the water slide downwards to the sedimentation area along the surface of the inclined flow guide device under the action of gravity, and are concentrated and discharged from a sludge discharge port after being precipitated to a certain amount. Can effectively improve the precipitation efficiency and the wastewater treatment capacity.
According to the utility model discloses a some embodiments, the reaction tank includes the district and the reaction zone of adding medicine that set up according to the reaction process, the reaction zone links to each other with the pan feeding district, the medicine system includes the dry powder medicine feeder, adds medicine agitator and reaction agitator, it sets up in adding the medicine district to add the medicine agitator, the medicine outlet of dry powder medicine feeder communicates with each other with adding the medicine district, the reaction agitator sets up in the reaction district.
According to some embodiments of the invention, the inclined drainage device is a chute or a sloping plate.
According to some embodiments of the utility model, the preprocessing unit includes gypsum swirler and waste water swirler, and the entry of gypsum swirler is used for connecting desulfurization absorption tower gypsum thick liquid pond export, the overflow mouth of gypsum swirler links to each other with waste water swirler's entry, waste water swirler's overflow mouth is connected the water inlet of reaction tank, waste water swirler's underflow mouth is used for connecting desulfurization absorption tower gypsum thick liquid entry.
According to some embodiments of the utility model, still include the vacuum belt feeder, the underflow mouth of gypsum swirler is connected in order to be used for the dehydration to generate the gypsum to the vacuum belt feeder.
According to some embodiments of the utility model, still include the vacuum belt feeder, the high-efficient desulfurization waste water precipitation equipment mud discharging opening is connected in order to be used for the dehydration to generate the gypsum to the vacuum belt feeder.
According to some embodiments of the invention, the settling zone is conical with the tip facing downwards.
According to some embodiments of the utility model, still include automatically controlled cabinet, automatically controlled cabinet with charge system's control end electric connection, be used for to charge system provides the power to realize manual control and procedure automatic control.
According to the utility model discloses a some embodiments still include pH meter and turbidimeter, the pH meter with the turbidimeter all sets up in the clear water district, pH meter, turbidimeter respectively with automatically controlled cabinet electric connection.
According to the utility model discloses a some embodiments still include the clean water basin, the entry in clean water basin communicates with each other through the outlet in clean water pipe and clean water district, be provided with the clarified water pump on the clean water pipe, arrange the clear water outward.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a high-efficiency desulfurization waste water precipitation device in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sedimentation tank and a reaction tank in the embodiment of the present invention.
Reference numerals
The device comprises a reaction tank 100, a dosing zone 110, a reaction zone 120, a sedimentation tank 200, a clear water zone 210, a diversion zone 220, a feeding zone 230, a sedimentation zone 240, an inclined diversion device 300, a gypsum cyclone 410, a waste water cyclone 420 and a vacuum belt conveyor 500.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the positional descriptions, such as the directions or positional relationships indicated by the upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, a high efficiency desulfurization waste water precipitation apparatus includes:
a pretreatment unit, a reaction tank 100 and a sedimentation tank 200.
The pretreatment unit comprises a gypsum cyclone 410 and a wastewater cyclone 420, wherein the inlet of the gypsum cyclone 410 is connected with the outlet of a gypsum slurry pool of the desulfurization absorption tower, the overflow port of the gypsum cyclone 410 is connected with the inlet of the wastewater cyclone 420, the underflow port of the gypsum cyclone 410 is connected with the vacuum belt conveyor, the overflow port of the wastewater cyclone 420 is connected with the water inlet of the reaction pool 100, and the underflow port of the wastewater cyclone 420 is used for connecting the inlet of the gypsum slurry pool of the desulfurization absorption tower.
The processing process of the pretreatment unit comprises the following steps:
after the desulfurization absorption tower is subjected to a desulfurization step, gypsum slurry discharged from the desulfurization absorption tower enters a gypsum cyclone 410 from an outlet for concentration, underflow gypsum slurry after concentration enters a vacuum belt conveyor for dehydration to generate gypsum, overflow liquid separated from an overflow port of the gypsum cyclone 410 enters a wastewater cyclone 420, overflow of the wastewater cyclone 420 enters a reaction tank 100, underflow of the wastewater cyclone 420 returns to the desulfurization absorption tower for recycling, and overflow liquid of the gypsum cyclone 410 can also directly return to the desulfurization absorption tower for recycling.
Referring to fig. 1-2, the reaction tank 100 includes a dosing region 110 and a reaction region 120, which are arranged according to a reaction process, the number of the reaction regions 120 is two, and the reaction regions are arranged in front and back to perform a two-stage reaction, the reaction region 120 is communicated with a feeding region 230 of the sedimentation tank 200, the dosing system includes a dosing stirrer, a reaction stirrer and a dry powder dosing machine, the dosing stirrer is arranged in the dosing region 110, a drug outlet of the dry powder dosing machine is communicated with the dosing region 110, and the reaction stirrer is arranged in the reaction region 120.
Referring to fig. 2, the sedimentation tank 200 comprises a clear water zone 210, a drainage zone 220, a feeding zone 230 and a sedimentation zone 240 which are arranged in sequence from top to bottom; the clear water area 210 is provided with a water outlet, the bottom of the settling area 240 is provided with a sludge discharge port, the settling area 240 is two cones with downward tips, the sludge discharge port is positioned at the bottom of the cone settling area 240, and a sludge discharge valve and a sludge discharge pump are arranged on a sludge discharge pipe. The sludge discharge port can be connected with the vacuum belt conveyor 500 through a sludge discharge pipe, and the sludge discharged from the sludge discharge port is dehydrated to generate gypsum; or can be pressed and filtered by a plate frame to generate mud cakes. A plurality of inclined drainage devices 300 are uniformly distributed in the drainage area 220, preferably, the inclined drainage devices 300 are inclined tubes or inclined plates in the embodiment, one end of each inclined drainage device 300 is communicated with the feeding area 230, and the other end of each inclined drainage device 300 is communicated with the clean water area 210.
The utility model discloses well sedimentation tank's theory of operation as follows:
the sedimentation tank of the application is based on the sedimentation principle of a shallow tank. An ideal sedimentation tank is arranged, the volume v, the surface area a and the tankLength l, width b, height h, water treatment amount q, residence time t, settling velocity u0. Then v is qt and t is h/u0，q＝v/t＝u0v/h＝u0a. The principle of shallow pool sedimentation is known as follows: the sedimentation efficiency is a function of the surface area of the sedimentation basin only and is independent of the water depth. When the volume of the sedimentation tank is a fixed value, the shallower the tank, the larger the value of a, and the higher the sedimentation efficiency. Therefore, if the sedimentation tank is divided into n layers according to the height, namely, the sedimentation tank is divided into n shallow layer sedimentation units with the height h being h/n, under the condition that q is not changed, the sedimentation depth of the particles is reduced from h to h/n, the sedimentation velocity range of the particles which can be completely removed in the sedimentation tank is changed from the original u-u0To u-u0N, sinking velocity u<u0The fraction of particles of (2) that can be removed is also represented by u/u0Increase to nu/u0Thereby increasing the removal rate of the suspended particles in the sedimentation tank by n times compared with the original removal rate. Obviously, the removal rate is improved correspondingly as the number of separated shallow layers is larger.
A plurality of dense inclined pipes or inclined plates are arranged in a sedimentation area, so that suspended impurities in water are precipitated in the inclined plates or inclined pipes, the water flows upwards along the inclined plates or inclined pipes, separated sludge slides downwards to the bottom of the pool along the inclined pipes/inclined plates under the action of gravity and is then discharged in a centralized manner. The sedimentation tank in this application can improve precipitation efficiency 50 ~ 60%, can improve throughput 3 ~ 5 times on same area.
In order to realize automatic control and monitoring, the automatic control and monitoring device further comprises an electric control cabinet, a pH meter and a turbidimeter, wherein the electric control cabinet is electrically connected with a dosing stirrer, a reaction stirrer, a dry powder dosing machine, a control end of equipment such as the pH meter and the turbidimeter through a control cable. The pH meter and the turbidimeter are arranged in the clear water area and are electrically connected with the electric control cabinet to feed back data.
The clean water treatment device is characterized by further comprising a clean water tank, an inlet of the clean water tank is communicated with a water outlet through a clean water pipe, a clean water pump is arranged on the clean water pipe, and the clean water tank is connected with a standard-reaching discharge port to discharge the treated standard-reaching clean water.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. An efficient desulfurization wastewater precipitation device, characterized by comprising:
the pretreatment unit is used for connecting the outlet of the gypsum slurry pool of the desulfurization absorption tower;
the water outlet of the pretreatment unit is communicated with the water inlet of the reaction tank (100), and a dosing system is arranged in the reaction tank (100);
the sedimentation tank (200) comprises a clear water area (210), a drainage area (220), a feeding area (230) and a sedimentation area (240) which are sequentially arranged from top to bottom; an outlet of the reaction tank (100) is communicated with the feeding area (230), a water outlet is formed in the clear water area (210), and a sludge discharge port is formed in the bottom of the settling area (240);
the device comprises a plurality of inclined drainage devices (300), wherein the inclined drainage devices (300) are uniformly and horizontally distributed in the drainage area (220), one end of each inclined drainage device (300) is communicated with a feeding area (230), and the other end of each inclined drainage device (300) is communicated with a clean water area (210).
2. The high efficiency desulfurization waste water precipitation apparatus according to claim 1, characterized in that: the reaction tank (100) comprises a dosing region (110) and a reaction region (120) which are sequentially arranged from top to bottom, the reaction region (120) is connected with the feeding region (230), the dosing system comprises a dry powder dosing machine, a dosing stirrer and a reaction stirrer, the dosing stirrer is arranged in the dosing region (110), a medicine outlet of the dry powder dosing machine is communicated with the dosing region (110), and the reaction stirrer is arranged in the reaction region (120).
3. The high efficiency desulfurization waste water precipitation apparatus according to claim 1, characterized in that: the inclined drainage device (300) is an inclined pipe or an inclined plate.
4. The high efficiency desulfurization waste water precipitation apparatus according to claim 1, characterized in that: the pretreatment unit comprises a gypsum cyclone (410) and a wastewater cyclone (420), wherein the inlet of the gypsum cyclone (410) is used for being connected with the outlet of a gypsum slurry pool of the desulfurization absorption tower, the overflow port of the gypsum cyclone (410) is connected with the inlet of the wastewater cyclone (420), the overflow port of the wastewater cyclone (420) is connected with the water inlet of the reaction tank (100), and the underflow port of the wastewater cyclone (420) is used for being connected with the inlet of the gypsum slurry pool of the desulfurization absorption tower.
5. The high efficiency desulfurization waste water precipitation apparatus according to claim 4, characterized in that: the gypsum dewatering device further comprises a vacuum belt conveyor (500), wherein the vacuum belt conveyor (500) is connected with a bottom flow port of the gypsum cyclone (410) and is used for dewatering to generate gypsum.
6. The high efficiency desulfurization waste water precipitation apparatus according to claim 1, characterized in that: still include vacuum belt feeder (500), vacuum belt feeder (500) are connected the mud discharging opening is in order to be used for the dehydration to generate gypsum.
7. The high efficiency desulfurization waste water precipitation apparatus according to claim 1, characterized in that: the settling zone (240) is tapered with the tip facing downward.
8. The high efficiency desulfurization waste water precipitation apparatus according to claim 1, characterized in that: the automatic medicine feeding device is characterized by further comprising an electric control cabinet, wherein the electric control cabinet is electrically connected with a control end of the medicine feeding system and used for providing power for the medicine feeding system and achieving manual control and program automatic control.
9. The high efficiency desulfurization waste water precipitation apparatus according to claim 8, characterized in that: still include pH meter and turbidimeter, the pH meter with the turbidimeter all sets up in clear water district (210), pH meter, turbidimeter respectively with automatically controlled cabinet electric connection.
10. The high efficiency desulfurization waste water precipitation apparatus according to claim 1, characterized in that: the water purifier further comprises a clean water tank, an inlet of the clean water tank is communicated with a water outlet of the clean water area (210) through a clean water pipe, and an outlet of the clean water tank is provided with a clean water pump for discharging clean water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021305499.4U CN213375259U (en) | 2020-07-06 | 2020-07-06 | High-efficient desulfurization waste water precipitation equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021305499.4U CN213375259U (en) | 2020-07-06 | 2020-07-06 | High-efficient desulfurization waste water precipitation equipment |
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| CN213375259U true CN213375259U (en) | 2021-06-08 |
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| CN202021305499.4U Active CN213375259U (en) | 2020-07-06 | 2020-07-06 | High-efficient desulfurization waste water precipitation equipment |
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