CN211999149U - Physicochemical coagulation defluorination and precipitation integrated wastewater treatment device - Google Patents
Physicochemical coagulation defluorination and precipitation integrated wastewater treatment device Download PDFInfo
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- CN211999149U CN211999149U CN201921937808.7U CN201921937808U CN211999149U CN 211999149 U CN211999149 U CN 211999149U CN 201921937808 U CN201921937808 U CN 201921937808U CN 211999149 U CN211999149 U CN 211999149U
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Abstract
A physicochemical coagulation defluorination precipitation integrated wastewater treatment device belongs to the technical field of industrial wastewater treatment. Including homogeneity district, the reaction zone that thoughtlessly congeals, defluorination reaction zone and the separation zone that connects gradually, the homogeneity district is uncovered pond, and the homogeneity district includes the sewage entry, and the sewage entry is located one side top that the reaction zone was thoughtlessly congealed in the homogeneity district, and waste water gets into the homogeneity district from the sewage entry, then flows to the reaction zone that thoughtlessly congeals, defluorination reaction zone and precipitation separation zone from the homogeneity district in proper order. The novel wastewater treatment device combines sewage coagulation, defluorination and precipitation separation and operates in the same device, and can carry out integrated cooperative treatment on COD, fluoride and SS indexes in wastewater, thereby obviously reducing the occupied area of the treatment device, reducing the construction investment of the treatment device and the operation cost of a system, and having the COD removal rate more than or equal to 50%, the fluoride removal rate more than or equal to 80% and the SS removal rate more than or equal to 60% in the actual operation process.
Description
Technical Field
The invention belongs to the technical field of industrial wastewater treatment, and particularly relates to a physicochemical coagulation defluorination precipitation integrated wastewater treatment device.
Background
The industrial wastewater contains a plurality of toxic and harmful substances, which not only pollutes the environment, but also is harmful to the health of human beings, and the treatment of the industrial wastewater is always a focus of attention. Fluorine is one of essential trace elements for human body, and a proper amount of fluorine is beneficial to human health, but the content of fluorine is too low or too high, which can cause health hazards, especially fluorine poisoning. The modern industry is developing and discharges a large amount of high-concentration fluorine-containing industrial wastewater which generally contains fluorine ions (F)-) Fluorine in its form.
In the prior art, indexes such as COD, fluoride, SS and the like are generally treated in a targeted manner by mutually independent unit devices during the treatment of industrial wastewater, the treatment process is long, the occupied area of the treatment device is large, and the system operation cost is high.
Disclosure of Invention
The technical problem to be solved is as follows: aiming at the technical problems, the invention provides a physicochemical coagulation defluorination precipitation integrated wastewater treatment device which has the advantages of small floor area, low construction investment and system operation cost, high wastewater treatment efficiency and the like.
The technical scheme is as follows: a physicochemical coagulation defluorination and precipitation integrated wastewater treatment device comprises a homogeneous region, a coagulation reaction region, a defluorination reaction region and a precipitation separation region which are connected in sequence, wherein the homogeneous region is an open tank and comprises a sewage inlet, the sewage inlet is arranged at the top of one side of the homogeneous region away from the coagulation reaction region, wastewater enters the homogeneous region from the sewage inlet and then flows from the homogeneous region to the coagulation reaction region, the defluorination reaction region and the precipitation separation region in sequence,
the coagulation reaction zone comprises a horizontal side-by-side primary coagulation reaction tank group and a horizontal side-by-side secondary coagulation reaction tank group, the primary coagulation reaction tank group comprises four vertical side-by-side primary coagulation reaction tanks, each primary coagulation reaction tank comprises a tank body a, a coagulant feeding box and a stirrer a, the tank body a is an open tank, the coagulant feeding box is arranged at the water inlet end of the tank body a, the stirrer a is arranged at the bottom of the tank body a, the secondary coagulation reaction tank group comprises four vertical side-by-side secondary coagulation reaction tanks, each secondary coagulation reaction tank comprises a tank body b and a stirrer b, the tank body b is an open tank, and the stirrer b is arranged at the bottom of the tank body b;
the defluorination reaction zone comprises a horizontal side-by-side primary defluorination reaction tank group and a secondary defluorination reaction tank group, wherein the primary defluorination reaction tank group comprises four vertical side-by-side primary defluorination reaction tanks, each primary defluorination reaction tank comprises a tank body c, a defluorination agent feeding box and a stirrer c, each tank body c is an open tank, each defluorination agent feeding box is arranged at the water inlet end of each tank body c, the stirrer c is arranged at the bottom of each tank body c, each secondary defluorination reaction tank group comprises four vertical side-by-side secondary coagulation reaction tanks, each secondary coagulation reaction tank comprises a tank body d and a stirrer d, each tank body d is an open tank, and the stirrer d is arranged at the bottom of;
the sedimentation and separation zone comprises two vertical side-by-side inclined plate sedimentation tanks, each inclined plate sedimentation tank comprises a tank body e, a sedimentation inclined plate, a scraping and suction sludge device, a water outlet and a sludge outlet, the sedimentation inclined plate is obliquely placed inside the tank body e, the tilting end of the top of the sedimentation inclined plate is connected with the side wall of the water inlet end of the tank body e, the bottom supporting end is connected with the bottom surface of the tank body e, the scraping and suction sludge device is movably connected to the bottom of the sedimentation inclined plate and used for scraping and sucking the sludge sedimentation on the surface of the sedimentation inclined plate, the water outlet is arranged at the top of the side wall opposite to the water inlet end in the.
Preferably, the coagulant in the coagulant feeding box is PAC aluminum salt coagulant or iron salt coagulant and PAM flocculant.
Preferably, the adding amount of the PAC aluminum salt coagulant is 180-250 ppm, the adding amount of the iron salt coagulant is 800-1500 ppm, and the adding amount of the PAM flocculant is 5-8 ppm.
Preferably, the defluorinating agent in the defluorinating agent feeding box is hydrated lime or calcium chloride.
Preferably, the molar ratio of calcium ions in the hydrated lime or calcium chloride to fluoride ions in the wastewater to be treated is 1 (1.2-2).
Preferably, the inclined plate sedimentation tank further comprises an effluent weir, the effluent weir is arranged at the upper part of one end of the tank body e close to the water outlet, and the effluent weir is connected with the water outlet.
Preferably, the surface load of the inclined plate sedimentation tank in the separation and sedimentation zone is less than or equal to 10 m3/m2·h。
Preferably, the height of the common side wall at the joint of the homogenizing zone, the coagulation reaction zone, the defluorination reaction zone and the precipitation separation zone is lower than that of other side walls of the tank body.
Has the advantages that: 1. the novel physicochemical coagulation, defluorination and precipitation integrated wastewater treatment device combines sewage coagulation, defluorination and precipitation separation and runs in the same device, and can carry out integrated cooperative treatment on COD, fluoride and SS indexes in wastewater, thereby obviously reducing the floor area of the treatment device, reducing the construction investment of the treatment device, reducing the running cost of the system, and having the COD removal rate more than or equal to 50%, the fluoride removal rate more than or equal to 80% and the SS removal rate more than or equal to 60% in the actual running process.
2. Materialization thoughtlessly congeals defluorination and deposits integration effluent treatment plant will congeal the reaction zone respectively and fall into 8 reaction ponds of equal size with defluorination reaction zone to install the agitator under water at the bottom of the pool, can form the torrent, reinforcing homogeneity effect improves reaction efficiency, it is also less to go out the influence of water index when individual mixer overhauls, if merge into a big pond, stirring power is too big, there is the reaction dead angle in the pond, be unfavorable for the abundant reaction, unable homogeneity when mixer overhauls simultaneously will lead to the fact great influence to going out water.
3. Materialization is coagulated and is removed fluorine and deposit integration effluent treatment plant carries out homogeneity and buffering water yield to sewage water through setting up the homogeneity district, can be convenient for observe and detect sewage water quality of water to in time add medicine regulation, guarantee water index.
4. This novel materialization is coagulated and is removed fluorine and deposit integration effluent treatment plant has that area is little, construction investment and system operation cost are few, advantages such as waste water treatment efficiency height.
Drawings
FIG. 1 is a top view of the novel physicochemical coagulation, defluorination and precipitation integrated wastewater treatment device;
FIG. 2 is a front view of the novel physicochemical coagulation, defluorination and precipitation integrated wastewater treatment device.
The numerical designations in the drawings represent the following: 1. a sewage inlet; 2. a homogenizing zone; 3. a primary coagulation reaction tank; 4. a secondary coagulation reaction tank; 5. a first-stage defluorination reaction tank; 6. a second-stage defluorination reaction tank; 7. an inclined plate sedimentation tank; 8. a water outlet; 9. a coagulant feeding box; 10. a stirrer a; 11. b, a stirrer; 12. a defluorinating agent feeding box; 13. a stirrer c; 14. a stirrer d; 15. a sedimentation sloping plate; 16. a mud scraping and sucking device; 17. an effluent weir; 18. and (6) a sludge outlet.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Example 1
The utility model provides a materialization is coagulated and is removed fluorine and deposit integration effluent treatment plant, participates in fig. 1 and fig. 2, materialization is coagulated and is removed fluorine and deposit integration effluent treatment plant is including homogeneity district 2, coagulation reaction district, defluorination reaction district and the separation zone that connects gradually, homogeneity district 2 is uncovered pond, and homogeneity district 2 includes sewage entry 1, and sewage entry 1 locates one side top that homogeneity district 2 kept away from coagulation reaction district, and waste water gets into homogeneity district 2 from sewage entry 1, then flows to coagulation reaction district, defluorination reaction district and deposit the separation zone from homogeneity district 2 overflow in proper order. The homogenizing zone 2 is mainly used for incoming water homogenization and buffering water quantity, and observing the quality of the incoming water and detection, so that dosing adjustment can be performed in time, and the water outlet index is guaranteed.
The coagulation reaction zone includes that the level is one-level coagulation reaction pond group side by side and second grade coagulation reaction pond group, one-level coagulation reaction pond group is four perpendicular one-level coagulation reaction pond 3 side by side, one-level coagulation reaction pond 3 includes that cell body an, coagulant add feed box 9 and mixer a 10, cell body a is uncovered pond, cell body an water inlet end is located to coagulant add feed box 9, cell body a bottom is located to mixer a 10, second grade coagulation reaction pond group is four perpendicular second grade coagulation reaction pond 4 side by side, second grade coagulation reaction pond 4 includes cell body b and mixer b 11, cell body b is uncovered pond, mixer b 11 locates cell body b bottom. Will congeal the reaction zone and fall into eight reaction ponds, can form the torrent under the effect of mixer, the homogeneity effect of reinforcing improves reaction efficiency, and is also less to the influence of play water index when individual mixer overhauls, if merge into a big pond, stirring power is too big, has the reaction dead angle in the pond, is unfavorable for abundant reaction, and unable homogeneity when mixer overhauls simultaneously will cause great influence to going out water.
Defluorination reaction zone includes that the level one-level that is side by side is removed fluorine reaction tank group and second grade and is removed fluorine reaction tank group, the one-level is removed fluorine reaction tank group and is four perpendicular one-level that are side by side and removes fluorine reaction tank 5, the one-level is removed fluorine reaction tank 5 and is included cell body c, defluorination agent and add feed box 12 and mixer c 13, cell body c is uncovered pond, it adds feed box 12 and locates cell body c and intake the end to remove fluorine agent, mixer c 13 locates cell body c bottom, the second grade is removed fluorine reaction tank group and is four perpendicular second grade coagulation reaction tank 6 side by side, second grade coagulation reaction tank 6 includes cell body d and mixer d 14, cell body d is uncovered pond, mixer d 14 locates cell body d bottom. Divide into eight reaction ponds except that fluorine reaction zone, can form the torrent under the effect of mixer, reinforcing homogeneity effect improves reaction efficiency, and is also less to the play water index influence when individual mixer overhauls, if merge into a big pond, stirring power is too big, has the reaction dead angle in the pond, is unfavorable for abundant reaction, and unable homogeneity when mixer overhauls simultaneously will cause great influence to a play water.
The sedimentation and separation zone comprises two vertical side-by-side inclined plate sedimentation tanks 7, each inclined plate sedimentation tank 7 comprises a tank body e, a sedimentation inclined plate 15, a scraping and sucking sludge device 16, a water outlet 8 and a sludge outlet 18, the sedimentation inclined plate 15 is obliquely placed inside the tank body e, the tilting end of the top of the sedimentation inclined plate 15 is connected with the side wall of the water inlet end of the tank body e, the bottom supporting end is connected with the bottom surface of the tank body e, the scraping and sucking sludge device 16 is movably connected to the bottom of the sedimentation inclined plate for scraping and sucking the surface sludge sedimentation of the sedimentation inclined plate, the water outlet 8 is arranged at the top of the side wall opposite to the water inlet end in the tank body e, and. The sedimentation separation zone is divided into two vertical and side-by-side inclined plate sedimentation tanks, so that when one inclined plate sedimentation tank is stopped for maintenance, waste water can be merged into the other inclined plate sedimentation tank for operation.
Example 2
The difference between the embodiment 1 and the inclined plate sedimentation tank is that the inclined plate sedimentation tank further comprises an effluent weir 17, the effluent weir 17 is arranged at the upper part of one end of the tank body e close to the water outlet, and the effluent weir 17 is connected with the water outlet. The surface load of the inclined plate sedimentation tank 7 in the separation and sedimentation zone is 10 m3/m2H. The coagulant in the coagulant feeding box 9 is PAC aluminum salt coagulant and PAM flocculant. The adding amount of the PAC aluminum salt coagulant is 180-250 ppm, and the adding amount of the PAM flocculant is 5-8 ppm. The fluorine removing agent in the fluorine removing agent feeding box 12 is hydrated lime. The molar ratio of calcium ions in the hydrated lime to fluorine ions in the wastewater to be treated is 1: 1.2. The height of the shared side wall at the joint of the homogeneous region, the coagulation reaction region, the defluorination reaction region and the precipitation separation region is lower than that of other side walls of the tank body, so that wastewater is guided to enter the homogeneous region from a sewage inlet and then flows from the homogeneous region to the coagulation reaction region, the defluorination reaction region and the precipitation separation region in sequence.
Example 3
The difference between the embodiment 1 and the inclined plate sedimentation tank is that the inclined plate sedimentation tank further comprises an effluent weir 17, the effluent weir 17 is arranged at the upper part of one end of the tank body e close to the water outlet, and the effluent weir 17 is connected with the water outlet. The surface load of the inclined plate sedimentation tank 7 in the separation and sedimentation zone is 8 m3/m2H. The coagulant in the coagulant feeding box 9 is an iron salt coagulant and a PAM flocculant. The adding amount of the ferric salt coagulant is 800-1500 ppm, and the adding amount of the PAM flocculant is 5-8 ppm. The defluorinating agent in the defluorinating agent charging box 12 is calcium chloride. The molar ratio of calcium ions in the calcium chloride to fluoride ions in the wastewater to be treated is 1: 2. The height of the shared side wall at the joint of the homogeneous region, the coagulation reaction region, the defluorination reaction region and the precipitation separation region is lower than that of other side walls of the tank body, so that wastewater is guided to enter the homogeneous region from a sewage inlet and then flows from the homogeneous region to the coagulation reaction region, the defluorination reaction region and the precipitation separation region in sequence. The homogeneous zone 2, the first-stage coagulation reaction tank 3 and the secondThe tank bodies of the primary coagulation reaction tank 4, the primary defluorination reaction tank 5, the secondary defluorination reaction tank 6 and the inclined plate sedimentation tank 7 are of steel or steel concrete structures.
When the device is operated, industrial wastewater (coking wastewater, COD is 105 mg/L and fluoride is 58 mg/L, SS is 55 mg/L before treatment) firstly enters a homogenizing zone through a sewage inlet, uniformly mixed in the homogenizing zone and then flows to a coagulation reaction zone, an iron salt coagulant and a PAM flocculant are added into a coagulant feeding box, a sludge-water mixture of the wastewater and the coagulated sludge is formed after coagulation reaction, the sludge-water mixture automatically flows into a defluorination reaction zone from the upper part of the coagulation reaction zone, calcium chloride is added into a defluorination agent feeding box, a sludge-water mixture of the wastewater, the coagulated sludge and materialized sludge is formed after defluorination reaction, the sludge-water mixture automatically flows into a precipitation separation zone from the upper part of the defluorination reaction zone, the sludge-water mixture of the precipitation separation zone is automatically separated by gravity under the assistance of a sedimentation inclined plate, sludge is sucked from the bottom of the precipitation separation zone by a sludge scraping and sucking device, and the water is discharged through the water outlet, and the discharged water flow can be uniform and stable under the action of the water outlet weir.
Through actual operation, the physicochemical coagulation defluorination and precipitation integrated wastewater treatment device has the COD removal rate of more than or equal to 50 percent, the fluoride removal rate of more than or equal to 80 percent and the SS removal rate of more than or equal to 60 percent.
Claims (4)
1. A physicochemical coagulation, defluorination and precipitation integrated wastewater treatment device is characterized by comprising a homogenizing zone, a coagulation reaction zone, a defluorination reaction zone and a precipitation separation zone which are sequentially connected, wherein the homogenizing zone is an open tank and comprises a sewage inlet, the sewage inlet is arranged at the top of one side of the homogenizing zone away from the coagulation reaction zone, wastewater enters the homogenizing zone from the sewage inlet and then flows from the homogenizing zone to the coagulation reaction zone, the defluorination reaction zone and the precipitation separation zone in a flooding manner,
the coagulation reaction zone comprises a horizontal side-by-side primary coagulation reaction tank group and a horizontal side-by-side secondary coagulation reaction tank group, the primary coagulation reaction tank group comprises four vertical side-by-side primary coagulation reaction tanks, each primary coagulation reaction tank comprises a tank body a, a coagulant feeding box and a stirrer a, the tank body a is an open tank, the coagulant feeding box is arranged at the water inlet end of the tank body a, the stirrer a is arranged at the bottom of the tank body a, the secondary coagulation reaction tank group comprises four vertical side-by-side secondary coagulation reaction tanks, each secondary coagulation reaction tank comprises a tank body b and a stirrer b, the tank body b is an open tank, and the stirrer b is arranged at the bottom of the tank body b;
the defluorination reaction zone comprises a horizontal side-by-side primary defluorination reaction tank group and a secondary defluorination reaction tank group, wherein the primary defluorination reaction tank group comprises four vertical side-by-side primary defluorination reaction tanks, each primary defluorination reaction tank comprises a tank body c, a defluorination agent feeding box and a stirrer c, each tank body c is an open tank, each defluorination agent feeding box is arranged at the water inlet end of each tank body c, the stirrer c is arranged at the bottom of each tank body c, each secondary defluorination reaction tank group comprises four vertical side-by-side secondary coagulation reaction tanks, each secondary coagulation reaction tank comprises a tank body d and a stirrer d, each tank body d is an open tank, and the stirrer d is arranged at the bottom of;
the sedimentation and separation zone comprises two vertical side-by-side inclined plate sedimentation tanks, each inclined plate sedimentation tank comprises a tank body e, a sedimentation inclined plate, a scraping and suction sludge device, a water outlet and a sludge outlet, the sedimentation inclined plate is obliquely placed inside the tank body e, the tilting end of the top of the sedimentation inclined plate is connected with the side wall of the water inlet end of the tank body e, the bottom supporting end is connected with the bottom surface of the tank body e, the scraping and suction sludge device is movably connected to the bottom of the sedimentation inclined plate and used for scraping and sucking the sludge sedimentation on the surface of the sedimentation inclined plate, the water outlet is arranged at the top of the side wall opposite to the water inlet end in the.
2. The integrated wastewater treatment device for physical and chemical coagulation, fluorine removal and precipitation as claimed in claim 1, wherein the fluorine removal agent in the fluorine removal agent feeding box is hydrated lime or calcium chloride.
3. The integrated wastewater treatment device for physical and chemical coagulation, fluorine removal and sedimentation as claimed in claim 1, wherein the inclined plate sedimentation tank further comprises an effluent weir, the effluent weir is arranged at the upper part of one end of the tank body e close to the water outlet, and the effluent weir is connected with the water outlet.
4. The integrated wastewater treatment device for physical and chemical coagulation, fluorine removal and sedimentation as claimed in claim 1, wherein the height of the common side wall at the joint of the homogenizing zone, the coagulation reaction zone, the fluorine removal reaction zone and the sedimentation separation zone is lower than the height of the other side walls of the tank body.
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| CN201921937808.7U CN211999149U (en) | 2019-11-12 | 2019-11-12 | Physicochemical coagulation defluorination and precipitation integrated wastewater treatment device |
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| CN201921937808.7U CN211999149U (en) | 2019-11-12 | 2019-11-12 | Physicochemical coagulation defluorination and precipitation integrated wastewater treatment device |
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