CN115490369A - Method for treating suspended matters in waste water of thermal power plant - Google Patents

Method for treating suspended matters in waste water of thermal power plant Download PDF

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Publication number
CN115490369A
CN115490369A CN202211283990.5A CN202211283990A CN115490369A CN 115490369 A CN115490369 A CN 115490369A CN 202211283990 A CN202211283990 A CN 202211283990A CN 115490369 A CN115490369 A CN 115490369A
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CN
China
Prior art keywords
waste water
filter screen
power plant
thermal power
centrifugal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211283990.5A
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Chinese (zh)
Inventor
邓秦生
王彤
白旭
张敏捷
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Huaneng Lanzhou New Area Thermal Power Co ltd
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Huaneng Lanzhou New Area Thermal Power Co ltd
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Application filed by Huaneng Lanzhou New Area Thermal Power Co ltd filed Critical Huaneng Lanzhou New Area Thermal Power Co ltd
Priority to CN202211283990.5A priority Critical patent/CN115490369A/en
Publication of CN115490369A publication Critical patent/CN115490369A/en
Pending legal-status Critical Current

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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
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • 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
    • 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 relates to a method for treating suspended matters in waste water of a thermal power plant, which comprises the following steps of adding a large amount of coagulant and coagulant aid into the waste water in the prior art for precipitation and coagulation, wherein the coagulant and coagulant aid can remove a large amount of impurities, a small amount of unreacted suspended matters are difficult to clean, and the treatment device is easy to block during conveying and needs to be cleaned and dredged.

Description

Method for treating suspended matters in waste water of thermal power plant
Technical Field
The invention relates to the field of waste water treatment of thermal power plants, in particular to a method for treating suspended matters in waste water of a thermal power plant.
Background
The water consumption of thermal power plant accounts for more than 50% of national industrial water total amount, its waste water discharge is huge simultaneously, mainly include circulating water blowdown water, desulfurization waste water, domestic wastewater etc, the waste water that produces need flow into desulfurization waste water forebay through desulfurization technology building, then flow into the buffer pool of preliminary treatment department through the delivery pump, then send to the reactor in and carry out the reaction treatment, the impurity that contains in the waste water is more, add a large amount of coagulants usually in the processing procedure, the coagulant aid deposits, the coagulation, but the coagulant aid, a large amount of impurity can be got rid of to the coagulant aid, it is difficult to clean up a small amount of unreacted suspended solid, cause processing apparatus to take place to block up during the transport easily, need clear up the mediation, influence the problem of waste water integrated processing apparatus treatment efficiency.
Disclosure of Invention
In order to overcome the defects in the prior art, the method for treating the suspended solids in the waste water of the thermal power plant is provided so as to solve the problems that a great amount of impurities can be removed by using a coagulant and a coagulant aid, a small amount of unreacted suspended solids are difficult to clean, a treatment device is easy to block during conveying, the cleaning and dredging are needed, and the treatment efficiency of a comprehensive waste water treatment device is influenced.
The utility model provides a thermal power plant waste water suspended solid processing method, utilize two sets of filter plate boards in the rose box, will deposit, waste water after the coagulation passes through gravity downward flow again, make the suspended solid of part aquatic remain on filter plate board, be convenient for the suspended solid in preliminary filtration waste water, the centrifugal screen frame of high-speed rotation in the rethread separation organism, carry out centrifugal separation with waste water and suspended solid, make the suspended solid stay in centrifugal screen frame inboard, be convenient for more thorough filtration suspended solid, avoid blockking up follow-up desulfurization reaction tower and reactor, make things convenient for waste water smoothly to circulate in suspended solid processing apparatus, thereby improve waste water suspended solid processing apparatus treatment efficiency.
According to the method for treating the suspended matters in the wastewater of the thermal power plant, a separator body (4) is arranged at the lower end of a filter box (3), and a centrifugal motor (84) is fixed on the surface of the lower end of the separator body (4);
the first filter screen plate (7) is positioned in the filter box (3), and a second filter screen plate (72) is fixed at the lower end of the first filter screen plate (7) through a fixing rod (71);
the centrifugal filter screen frame (8) is positioned inside the separating machine body (4), and the lower end of the centrifugal filter screen frame (8) is connected with a centrifugal motor (84) through a centrifugal shaft (83).
According to the method for treating the suspended solids in the wastewater of the thermal power plant, the left end of the filter box (3) is connected with the coagulation tank (2) through the water inlet pipe (31), the coagulation tank (2) is connected with the sedimentation tank (1) through the conveying pipeline, and the upper end of the filter box (3) is buckled with the box cover (32).
According to the method for treating the suspended matters in the waste water of the thermal power plant, a separation cavity (44) is formed in the separator body (4), a sealing cover (41) is screwed at the upper end of the separator body (4), and the lower end of the filter box (3) is communicated with the separation cavity (44) through a drain pipe (33).
According to the method for treating the suspended solids in the wastewater of the thermal power plant, the right end of the separator body (4) is connected with a desulfurization reaction tower (5) through a water outlet pipe (43), the desulfurization reaction tower (5) is connected with a primary reactor (6) through a conveying pipeline, and the primary reactor (6) is connected with a secondary reactor (61) through a conveying pipeline.
According to the method for treating the suspended matter in the waste water of the thermal power plant, a control panel (42) is fixed on the surface of the front end of the separator body (4), and the first filter screen plate (7) and the second filter screen plate (72) are internally provided with downward convex arc-shaped screen ends (73).
According to the method for treating the suspended matters in the wastewater of the thermal power plant, a microporous filter screen is welded on the side wall of the centrifugal filter screen frame (8); and the surface welding of micropore filter screen upper end has fixed ring board (82), separation organism (4) and rose box (3) constitute the filtration separator of waste water.
According to the method for treating the suspended matter in the waste water of the thermal power plant, the balls (81) are embedded and connected on the upper surface of the fixed ring plate (82); and the ball (81) contacts with the lower surface of the sealing cover (41), and the water blocking brush is bonded on the upper surface of the fixed ring plate (82).
Advantageous effects
The comprehensive wastewater treatment device for the thermal power plant utilizes the two groups of filter screen plates in the filter box to enable precipitated and coagulated wastewater to flow downwards through gravity, so that suspended matters in part of the water are remained on the filter screen plates to facilitate primary filtration of the suspended matters in the wastewater, and the wastewater and the suspended matters are centrifugally separated through the centrifugal filter screen frame rotating at a high speed in the separation machine body, so that the suspended matters are left at the inner side of the centrifugal filter screen frame to facilitate more thorough filtration and separation of the suspended matters, thereby avoiding blockage of a subsequent desulfurization reaction tower and a reactor and facilitating smooth circulation of the wastewater in the comprehensive wastewater treatment device, further improving the treatment efficiency of the comprehensive wastewater treatment device, and solving the problem of influencing the treatment efficiency of the comprehensive wastewater treatment device.
Drawings
FIG. 1 is a schematic view of a treatment process of a thermal power plant wastewater comprehensive treatment device according to an embodiment of the invention.
Fig. 2 is a schematic front view of a connection structure between a filter box and a separator according to an embodiment of the present invention.
Fig. 3 is a schematic front sectional view of a filter box according to an embodiment of the present invention.
Fig. 4 is a schematic front sectional view of a separation body according to an embodiment of the invention.
1. A sedimentation tank; 2. a coagulation tank; 3. a filter box; 31. a water inlet pipe; 32. a box cover; 33. a drain pipe; 4. separating the organism; 41. sealing the machine cover; 42. a control panel; 43. a water outlet pipe; 44. a separation chamber; 5. a desulfurization reaction tower; 6. a first stage reactor; 61. a secondary reactor; 7. a first filter screen plate; 71. fixing the rod; 72. a second screen plate; 73. a cambered surface net end; 8. a centrifugal screen frame; 81. a ball bearing; 82. a stationary ring plate; 83. a centrifugal shaft; 84. a centrifugal motor.
Detailed Description
Referring to fig. 1 to 4, the present invention provides a method for treating suspended solids in wastewater from a thermal power plant, including: a separation body 4, a first filter screen plate 7 and a centrifugal filter screen frame 8.
The separator body 4 is positioned at the lower end of the filter tank 3, and a centrifugal motor 84 is fixed on the surface of the lower end of the separator body 4.
The first filter screen plate 7 is positioned in the filter box 3, and a second filter screen plate 72 is fixed at the lower end of the first filter screen plate 7 through a fixing rod 71.
The centrifugal filter screen frame 8 is positioned inside the separation machine body 4, and the lower end of the centrifugal filter screen frame 8 is connected with a centrifugal motor 84 through a centrifugal shaft 83.
The coagulant and the coagulant aid can remove a large amount of impurities, a small amount of unreacted suspended matters are difficult to clean, a treatment device is easy to block during transportation, the treatment device needs to be cleaned and dredged, and the treatment efficiency of the comprehensive wastewater treatment device is influenced. Therefore, the comprehensive wastewater treatment device for the thermal power plant utilizes the two groups of filter screen plates in the filter box to enable the precipitated and coagulated wastewater to flow downwards through gravity, so that suspended matters in part of water are remained on the filter screen plates to be convenient for preliminarily filtering the suspended matters in the wastewater, and then the wastewater and the suspended matters are centrifugally separated through the centrifugal filter screen frame rotating at a high speed in the separation machine body, so that the suspended matters are left at the inner side of the centrifugal filter screen frame, the suspended matters are conveniently and thoroughly filtered and separated, the blockage of a subsequent desulfurization reaction tower and a reactor is avoided, and the smooth circulation of the wastewater in the comprehensive wastewater treatment device is facilitated, thereby improving the treatment efficiency of the comprehensive wastewater treatment device, and solving the problem of influencing the treatment efficiency of the comprehensive wastewater treatment device.
The left end of the filter box 3 is connected with a coagulation tank 2 through a water inlet pipe 31, the coagulation tank 2 is connected with a sedimentation tank 1 through a conveying pipeline, and the upper end of the filter box 3 is buckled with a box cover 32.
1 inside adding precipitant of sedimentation tank makes waste water that thermal power plant produced through deposit reentrant coagulation basin 2 in, react with the coagulant aid in the coagulation basin 2, coagulate partial impurity in the waste water, the floccule that becomes, later in the rethread rose box 3, carry out the suspended solid in the prefiltration waste water.
The inside separation chamber 44 that is provided with of separator body 4, the spiro union of separator body 4 upper end has sealed cover 41, and the lower extreme of rose box 3 is linked together with separation chamber 44 through drain pipe 33.
The centrifugal screen frame 8 is located inside the separation chamber 44 so that the separated waste water is discharged from the outlet pipe 43. The filter box 3 passes the filtered waste water into the inside of the centrifugal screen frame 8 in the separation chamber 44 by gravity.
The right end of the separator body 4 is connected with a desulfurization reaction tower 5 through a water outlet pipe 43, the desulfurization reaction tower 5 is connected with a primary reactor 6 through a conveying pipeline, and the primary reactor 6 is connected with a secondary reactor 61 through a conveying pipeline.
The desulfurization reaction tower 5, the primary reactor 6 and the secondary reactor 61 respectively carry out desulfurization and reaction treatment on the wastewater, so that the wastewater reacted from the secondary reactor 61 conforms to the discharge surface, and the comprehensive treatment process of the wastewater is completed.
A control panel 42 is fixed on the front end surface of the separator body 4, and a cambered surface net end 73 which is convex downwards is arranged inside the first filter screen plate 7 and the second filter screen plate 72.
The control panel 42 may regulate the rotational speed of the centrifugal motor 84. The first sieve plate 7 and the second sieve plate 72 perform primary filtration on the incoming wastewater, leaving part of the suspended matter on the surface of the cambered screen end 73.
The side wall of the centrifugal filter screen frame 8 is welded with a microporous filter screen; and the upper end surface of the microporous filter screen is welded with a fixed ring plate 82, and the separating machine body 4 and the filter box 3 form a filtering and separating device for waste water.
The micropore filter screen can separate tiny suspended matters, the centrifugal separation effect of the centrifugal filter screen frame 8 is improved, and more thorough filtering separation suspended matters are convenient. The filtering and separating device for the wastewater facilitates smooth circulation of the wastewater in the comprehensive treatment device.
The upper surface of the fixed ring plate 82 is embedded and connected with a ball 81; and the balls 81 are in contact with the lower surface of the sealing cover 41, and the water blocking brush is bonded to the upper surface of the fixing ring plate 82.
The ball 81 is used for reducing and sealing the friction between the cover 41, and the water blocking brush of 8 upper ends of centrifugal filter screen frame plays simultaneously and stops that inboard water flows out, and the water of being convenient for fall into in the centrifugal filter screen frame 8 spills from the upper end under the centrifugal action.
The method for treating the suspended matters in the wastewater of the thermal power plant can effectively solve the problem of influencing the treatment efficiency of the comprehensive wastewater treatment device, facilitates more thorough filtration and separation of the suspended matters, facilitates smooth circulation of the wastewater in the comprehensive treatment device, and is suitable for treating the suspended matters in the wastewater of the thermal power plant.

Claims (8)

1. A method for treating suspended matters in waste water of a thermal power plant is characterized by comprising the following steps: utilize two sets of filter plate in the rose box, will deposit, waste water after the coagulation flows downwards through gravity again, make the suspended solid of partial aquatic remain on filter plate, be convenient for the suspended solid in preliminary filtration waste water, the centrifugal screen frame of high-speed rotation in the rethread separation organism, carry out centrifugal separation with waste water and suspended solid, make the suspended solid stay at centrifugal screen frame inboard, be convenient for more thorough filtration suspended solid, avoid blockking up follow-up desulfurization reaction tower and reactor, make things convenient for waste water smoothly to circulate in suspended solid processing apparatus, thereby improve waste water suspended solid processing apparatus treatment effeciency.
2. The method for treating suspended matter in wastewater from a thermal power plant according to claim 1, characterized by:
the lower end of the filter box (3) is provided with a separating machine body (4), and the surface of the lower end of the separating machine body (4) is fixed with a centrifugal motor (84);
the first filter screen plate (7) is positioned inside the filter box (3), and a second filter screen plate (72) is fixed at the lower end of the first filter screen plate (7) through a fixing rod (71);
the centrifugal filter screen frame (8) is positioned inside the separating machine body (4), and the lower end of the centrifugal filter screen frame (8) is connected with a centrifugal motor (84) through a centrifugal shaft (83).
3. The method for treating suspended matter in wastewater from a thermal power plant according to claim 2, characterized by:
the left end of the filter box (3) is connected with a coagulation basin (2) through a water inlet pipe (31), the coagulation basin (2) is connected with a sedimentation basin (1) through a conveying pipeline, and the upper end of the filter box (3) is buckled with a box cover (32).
4. The method for treating suspended matter in wastewater from a thermal power plant according to claim 3, characterized by comprising:
the separation machine is characterized in that a separation cavity (44) is arranged inside the separation machine body (4), a sealing machine cover (41) is connected to the upper end of the separation machine body (4) in a threaded mode, and the lower end of the filter box (3) is communicated with the separation cavity (44) through a drain pipe (33).
5. The method for treating suspended matter in wastewater from a thermal power plant according to claim 4, characterized by comprising:
the separator is characterized in that the right end of the separator body (4) is connected with a desulfurization reaction tower (5) through a water outlet pipe (43), the desulfurization reaction tower (5) is connected with a primary reactor (6) through a conveying pipeline, and the primary reactor (6) is connected with a secondary reactor (61) through a conveying pipeline.
6. The method for treating suspended matter in wastewater from a thermal power plant according to claim 5, characterized by:
a control panel (42) is fixed on the surface of the front end of the separator body (4), and a convex arc net end (73) is arranged inside the first filter screen plate (7) and the second filter screen plate (72).
7. The method for treating suspended matter in wastewater from a thermal power plant according to claim 6, characterized by:
a microporous filter screen is welded on the side wall of the centrifugal filter screen frame (8); and the surface welding of micropore filter screen upper end has stationary ring board (82), separation organism (4) and rose box (3) constitute the filtration separator of waste water.
8. The method for treating a suspension of waste water from a thermal power plant as claimed in claim 7, wherein:
the upper surface of the fixed ring plate (82) is embedded and connected with a ball (81); and the ball (81) contacts with the lower surface of the sealing cover (41), and the water blocking brush is bonded on the upper surface of the fixed ring plate (82).
CN202211283990.5A 2022-10-20 2022-10-20 Method for treating suspended matters in waste water of thermal power plant Pending CN115490369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211283990.5A CN115490369A (en) 2022-10-20 2022-10-20 Method for treating suspended matters in waste water of thermal power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211283990.5A CN115490369A (en) 2022-10-20 2022-10-20 Method for treating suspended matters in waste water of thermal power plant

Publications (1)

Publication Number Publication Date
CN115490369A true CN115490369A (en) 2022-12-20

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ID=84475302

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211283990.5A Pending CN115490369A (en) 2022-10-20 2022-10-20 Method for treating suspended matters in waste water of thermal power plant

Country Status (1)

Country Link
CN (1) CN115490369A (en)

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