CN114772693A - Efficient micro-sand circulating precipitation device and method thereof - Google Patents
Efficient micro-sand circulating precipitation device and method thereof Download PDFInfo
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- CN114772693A CN114772693A CN202210267006.XA CN202210267006A CN114772693A CN 114772693 A CN114772693 A CN 114772693A CN 202210267006 A CN202210267006 A CN 202210267006A CN 114772693 A CN114772693 A CN 114772693A
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- 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
- C02F1/5281—Installations for water purification using chemical agents
Abstract
An efficient micro-sand circulating precipitation device relates to the technical field of sewage treatment; the device comprises a flocculation reaction system, a curing reaction zone, a high-efficiency precipitator, a flocculating agent dosing device and a micro-sand circulating system, wherein the inside of the high-efficiency precipitator is provided with the flocculation reaction system, the flocculation reaction system comprises an inner barrel body, a stirring shaft is rotatably arranged in the inner barrel body, the upper end in the flocculation reaction system is provided with a mixed reaction zone, the outer side of the inner barrel body is connected with a sewage pipe, the upper end of the sewage pipe is provided with a static mixer and a check valve, micro-sand is added to accelerate flocculation and precipitation based on the traditional flocculation and precipitation tank theory, the retention time of the precipitation tank is shortened, and the rapid solid-liquid separation is realized PLC electric control system.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a high-efficiency micro-sand circulating precipitation device and a method thereof.
Background
In recent years, with the continuous upgrading of river and lake ecological treatment, sewage treatment and other technologies, the solid-liquid separation, precipitation and purification technology is particularly important, the traditional precipitation and separation technology has the defects of large occupied area, long retention time, long process flow, poor separation effect and the like, and particularly has the defects of precipitation, separation and purification treatment technologies of high-algae high-turbidity water, high-algae low-turbidity water, low-temperature low-turbidity water and slightly-polluted water in the river and lake treatment aspect.
Disclosure of Invention
The invention aims to solve the technical problems that the traditional precipitation separation process technology in the prior art has the defects of large occupied area, long retention time, long process flow, poor separation effect and the like, and particularly has the defects of the precipitation separation and purification treatment technology of high-algae high-turbidity water, high-algae low-turbidity water, low-temperature low-turbidity water and slightly-polluted water in the river and lake treatment aspect.
The purpose and the effect of the invention are achieved by the following specific technical means: a high-efficiency micro-sand circulating sedimentation device comprises a flocculation reaction system, a curing reaction zone, a high-efficiency precipitator, a flocculant dosing device, a high-molecular coagulant aid dosing device and a micro-sand circulating system, wherein the flocculation reaction system is arranged inside the high-efficiency precipitator, the flocculation reaction system comprises an inner barrel body, a stirring shaft is rotationally arranged in the inner barrel body, a stirring paddle is arranged at the upper end of the stirring shaft, a stirring motor is arranged at the top of the inner barrel body, an output shaft of the stirring motor is connected with the stirring shaft through a coupler, a water passing port is formed in the upper end of the inner barrel body, the lower end of the inside of the flocculation reaction system is arranged to be the flocculation reaction zone, the upper end of the inside of the flocculation reaction system is arranged to be a mixing reaction zone, a sewage pipe is connected to the outer side of the inner barrel body, and a static mixer and a check valve are arranged at the upper end of the sewage pipe;
an outer barrel body is arranged on the outer side of the inner barrel body in the efficient precipitator, and a curing reaction area is formed between the inner barrel body and the outer barrel body;
install pipe chute filler support between the shell of outer staving lower extreme and high-efficient precipitator, pipe chute filler support upper end sets up the pipe chute packed bed, the inside lower extreme that is located the pipe chute packed bed of shell sets up the mud district, install the reposition of redundant personnel guide plate in the mud district, the inside upper end that is located the pipe chute packed bed of shell is established to the clear water district, top in the clear water district sets up the roof on the clear water district, set up clear water district play weir groove in the clear water district, it sets up the clear water delivery port to correspond clear water district play weir groove in the outside of shell, the top and the clear water district of outer staving are connected to the roof, the bottom of shell sets up the little sand and gathers the district, little sand circulation system is connected in the high-efficient precipitator outside.
Preferably, the micro-sand circulation system comprises a rotational flow mud-sand separator, a micro-sand circulation supplementing device and a PLC (programmable logic controller) electrical control box, the middle position of the inner barrel body is connected with a sand outlet pipe, the upper end of the sand outlet pipe is provided with a pipeline mixer and an electric valve I, the other end of the sand outlet pipe is connected with the rotational flow mud-sand separator, a drug supply pipeline is connected between the polymer coagulant aid dosing device and the pipeline mixer, the rotational flow mud-sand separator and the micro-sand gathering area are connected with a micro-sand circulation pipe sand inlet pipe, and the upper end of the micro-sand circulation pipe sand inlet pipe is provided with a micro-sand circulation pump and an electric valve IV.
Preferably, the top of the cyclone silt separator is provided with a micro-sand circulation supplementing device and a pressure gauge, the outer side of the upper end of the cyclone silt separator is provided with a muddy water discharge pipe, and the upper end of the muddy water discharge pipe is provided with an electric valve II.
Preferably, the sewage pipe and the sand outlet pipe are arranged up and down in opposite directions along the tangential line to enter the inner barrel body, and the formed rotational flow laminar flow is in the clockwise direction and is consistent with the rotating direction of the stirring paddle.
Preferably, the water passing openings are rectangular holes which are uniformly distributed along the periphery of the inner barrel body, the hole diameter is 200 x 100mm, the interval is 200mm, and the water passing height of the water passing openings is 300mm higher than that of the water outlet weir grooves of the clean water area.
Preferably, the reposition of redundant personnel guide plate sets up the lower part at the pipe chute packed bed, the reposition of redundant personnel guide plate is that carbon steel lining is moulded or the PE material comprises two guide plates of different rules, the slope installation of guide plate, installation angle is 45 or 55, guide plate one end is connected with the inner tank body, the other end is connected with the shell inner wall, its contained angle is 35 or 45, two guide plate intermediate positions and lower extreme set up the hole of letting out sand, make the grit that contains sand floc after the separation of curing sink to the grit and gather the district along the hole of leaking.
Preferably, a sludge discharge pipe is installed on the outer side of the sludge area, and an electric valve III is installed at the upper end of the sludge discharge pipe.
Preferably, flocculating agent charge device comprises dissolving cartridge case, mixer, dosing pump and confession pencil, dissolves that the inside mixer that sets up of cartridge case and static mixer of dissolving cartridge case is connected the dosing pipe between, and the dosing pump is installed to the upper end of dosing pipe.
Preferably, the polymer coagulant aid dosing device consists of a cartridge dissolving cylinder, a stirrer, a dosing pump and a dosing pipeline.
The method of the high-efficiency micro-sand circulating precipitation device comprises the following steps:
the method comprises the following steps: a sewage pipe enters sewage, a dosing pump and a dosing pipe are arranged between a flocculant dosing device and a static mixer, a flocculant and the sewage are fully mixed and then enter along the tangential direction of an inner barrel body, an ascending flow enters a flocculation reaction zone, the reaction time is 1-2min, a coagulant aid and circulating sand are fully mixed by a pipeline mixer and then enter along the tangential direction of the inner barrel body, the ascending flow enters a mixing reaction zone, and the retention time is 1-2 min;
step two: the mixed reaction zone enters the curing reaction zone through a water inlet, and sand discharge holes are formed in the middle positions and the lower ends of the two guide plates, so that the micro-sand separated from cured sand-containing floc sinks to the micro-sand gathering zone along the leakage holes;
step three: a sludge discharge pipe is arranged on the outer side of the sludge area, an electric valve III is arranged at the upper end of the sludge discharge pipe, and a sludge deposition layer formed in the sludge area is discharged through the sludge discharge pipe and the electric valve;
step four: the sewage is flocculated, mixed, precipitated and separated to obtain heavy sludge and micro-sand which are accumulated in a micro-sand accumulation area, the heavy sludge and the micro-sand enter a cyclone mud-sand separator through an electric valve IV, a micro-sand circulating pump and a micro-sand circulating sand inlet pipe to be subjected to mud-sand separation, the separated sludge and water are discharged out of a system, the separated micro-sand flows back to a mixed reaction area of an inner barrel body through a pipeline mixer, the micro-sand is recycled, and the micro-sand circulating reflux ratio is 5-20%;
step five: the micro-sand circulation supplementing device supplements micro-sand periodically according to the use condition, the lower part of the rotational flow mud-sand separator is provided with a conical hopper which is a micro-sand deposition area, the deposited micro-sand enters a mixing reaction area in the inner barrel body through a sand outlet pipe, a pipeline mixer and an electric valve, and the coagulant aid enters the pipeline mixer through a polymer coagulant aid dosing device and a drug supply pipeline and synchronously enters the mixing reaction area of the inner barrel body together with the circulating micro-sand.
Has the beneficial effects that:
1. the invention takes the traditional vertical flow sedimentation tank as a basis, optimizes and integrates the flocculation reaction area, strengthens the sedimentation idea by combining high-efficiency micro-sand circulation, and fully utilizes the diversion flow distribution plate and the inclined tube packed bed to form a flocculation area, a mixed sedimentation area, a clear water area, a sludge area, a micro-sand aggregation sedimentation area and a micro-sand circulation system in the integrated settler, thereby forming an integrated high-efficiency micro-sand sedimentation system device, accelerating the densification of flocculation and agglomeration, increasing the volume of floc particles, shortening the retention time of the sedimentation tank and realizing the rapid solid-liquid separation. The device has wide application fields, is suitable for industrial wastewater, domestic sewage, slightly polluted water and other scenes, particularly has obvious application effects on water bodies with large water treatment capacity, such as riverway high-algae high-turbidity water, high-algae low-turbidity water, slightly polluted water and the like.
2. On the basis of the traditional coagulating sedimentation tank, the flocculation dosing stirring tank is arranged in a three-dimensional overlapping mode, the micro-sand system is added, and the micro-sand system is combined with the sedimentation tank to form the integrated micro-sand circulating sedimentation device.
3. The flocculation tanks are arranged in an overlapping way and share one set of stirring device, so that the energy consumption and the equipment investment are saved.
4. The flocculation reaction tank and the sedimentation tank are arranged in a three-dimensional mode, and occupied space is saved.
5. And a micro-sand circulating system is added to promote the conglomeration and compaction of the flocs and improve the separation efficiency.
6. The rotary cutting water inlet mode is adopted to provide power for flocculation reaction, save energy consumption and strengthen flocculation effect.
7. The cyclone silt separation device is adopted, so that silt is quickly separated, the separation is efficient and thorough, the layout is compact, the integrated design is realized, the process flow is simplified, and the operating cost of the system is reduced; the occupied area is reduced, and the maintenance and the management are convenient.
Description of the drawings:
fig. 1 is a schematic diagram of the high-efficiency micro-sand circulating and precipitating device.
Fig. 2 is a schematic view of the inside of the high-efficiency precipitator of the present invention.
In FIGS. 1-2: a sewage pipe 1, a static mixer 2, a check valve 3, a flocculating agent dosing device 4, a clean water outlet 5, a clean water region effluent weir trough 6, an outer barrel body 7, a stirring motor 8, a stirring shaft 9, a water passing port 10, an inner barrel body 11, a polymer coagulant aid dosing device 12, a chemical supply pipeline 13, a first electric valve 14, a micro-sand circulation supplementing device 15, a pressure gauge 16, a second electric valve 17, a muddy water discharge pipe 18, a rotational flow mud-sand separator 19, a sand outlet pipe 20, a pipeline mixer 21, a mud discharge pipe 22, a third electric valve 23, a micro-sand circulation sand inlet pipe 24, a micro-sand circulation pump 25, a fourth electric valve 26, a flocculation reaction system 27, a high-efficiency precipitator 28, a PLC electric cabinet 29, an inclined pipe packed bed 30, a stirring paddle 31, a diversion guide plate 32, a mixing reaction region 33, a curing reaction region 34, a flocculation reaction region 35, a clean water region 36, a sludge region 37, a micro-sand collection region 38, a chemical feeding pump and chemical supply pipe 39, An inclined tube filler support 40 and a clean water area upper top plate 41.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, a high-efficiency micro-sand circulating precipitation device comprises a flocculation reaction system 27, a curing reaction zone 34, a high-efficiency precipitator 28, a flocculant dosing device 4, a high-molecular coagulant aid dosing device 12 and a micro-sand circulating system;
the micro-sand circulating system comprises a cyclone mud-sand separator 19, a micro-sand circulating supplement device 15 and a PLC electric control box 29;
the high-efficiency precipitator 28 comprises a shell, and a flocculation reaction system 27 is arranged in the shell;
the flocculation reaction system 27 comprises an inner barrel body 11, a stirring shaft 9 is rotatably arranged in the inner barrel body 11, a stirring paddle 31 is arranged at the upper end of the stirring shaft 9, a stirring motor 8 is arranged at the top of the inner barrel body 11, an output shaft of the stirring motor 8 is connected with the stirring shaft 9 through a coupler, a water passing port 10 is arranged at the upper end of the inner barrel body 11, a flocculation reaction zone 35 is arranged at the lower end of the inside of the flocculation reaction system 27, a mixing reaction zone 33 is arranged at the upper end of the inside of the flocculation reaction system 27, a sewage pipe 1 is connected to the outer side of the inner barrel body 11, and a static mixer 2 and a check valve 3 are arranged at the upper end of the sewage pipe 1;
the outer barrel body 7 is arranged at the outer side of the inner barrel body 11 in the high-efficiency precipitator 28, and a curing reaction zone 34 is formed between the inner barrel body 11 and the outer barrel body 7;
an inclined tube packing support 40 is arranged between the lower end of the outer barrel body 7 and a shell of the efficient precipitator 28, an inclined tube packing bed 30 is arranged at the upper end of the inclined tube packing support 40, a sludge area 37 is arranged at the lower end of the inclined tube packing bed 30 in the shell, a flow dividing guide plate 32 is arranged in the sludge area 37, a clear water area 36 is arranged at the upper end of the inclined tube packing bed 30 in the shell, a clear water area upper top plate 41 is arranged at the top of the clear water area 36, a clear water area water outlet weir groove 6 is arranged in the clear water area 36, a clear water outlet 5 is arranged outside the shell corresponding to the clear water area water outlet weir groove 6, the top of the outer barrel body 7 is connected with the clear water area upper top plate 41, a micro-sand gathering area 38 is arranged at the bottom of the shell, and the effective space width of the outer barrel body 7 and the inner barrel body 11 is 200-400 mm;
one end of a sewage pipe 1 is arranged at the lower end of an inner barrel body 11, a down-water-inlet up-flow water inlet mode is adopted, sewage enters a flocculation reaction zone 35 through the sewage pipe 1, a static mixer 2 and a check valve 3 after being lifted by power, a dosing pump and a dosing pipe 39 are arranged between a flocculating agent dosing device 4 and the static mixer 2, flocculating agents enter a pipeline static mixer 2 through the flocculating agent dosing device 4, the flocculating agents are fully mixed with the sewage and then flow up to enter the flocculation reaction zone 35 and a mixing reaction zone 33, and water at the upper end of the mixing reaction zone 33 enters a curing reaction zone 34 through a water inlet 10;
the middle position of the inner barrel body 11 is connected with a sand outlet pipe 20, the upper end of the sand outlet pipe 20 is provided with a pipeline mixer 21 and an electric valve 14, the other end of the sand outlet pipe 20 is connected with a rotational flow sand-mud separator 19, a medicine supply pipeline 13 is connected between the polymer coagulant aid medicine adding device 12 and the pipeline mixer 21, the rotational flow sand-mud separator 19 and the micro-sand gathering area 38 are connected with a micro-sand circulating pipe sand inlet pipe 24, the upper end of the micro-sand circulating pipe sand inlet pipe 24 is provided with a micro-sand circulating pump 25 and an electric valve four 26, a flocculating agent and sewage are fully mixed and then enter along the tangential direction of the inner barrel body 11, an ascending flow enters a flocculation reaction area 35, the reaction time is 1-2min, the coagulant aid and circulating sand are fully mixed by the pipeline mixer 21 and then enter along the tangential direction of the inner barrel body 11, the ascending flow enters a mixing reaction area 33, and the retention time is 1-2 min.
The sewage pipe 1 and the sand outlet pipe 20 are arranged up and down along the direction of entering the inner barrel body 11 along the tangent line, and the formed rotational flow laminar flow is clockwise and is consistent with the rotation direction of the stirring paddle 31.
Wherein, the water passing port 10 is a rectangular hole, evenly distributed along the circumference of the inner barrel body 11, the aperture is 200 x 100mm, the interval is 200mm, and the water passing height of the water passing port 10 is higher than 200 and 300mm of the water outlet weir groove 6 of the clean water area.
The inner barrel 11 of the high-efficiency precipitator 28 can be made of glass fiber reinforced plastics, carbon steel lining plastics and the like.
Wherein, the sewage pipe 1 material can select one of PVC, PE, PPR, carbon steel pipe for use.
Wherein, the inclined tube packed bed 30 adopts polypropylene PP material, and the pipe diameter adopts 80mm, and the clear water district 36 height in the upper portion of inclined tube packed bed 30 is 500-.
Wherein, reposition of redundant personnel guide plate 32 sets up in the lower part of pipe chute packed bed 30, reposition of redundant personnel guide plate 32 is that carbon steel lining is moulded or the PE material comprises two guide plates of different rules, the guide plate slope installation, installation angle is 45 or 55, guide plate one end is connected with inner barrel 11, the other end is connected with the shell inner wall, its contained angle is 35 or 45, two guide plate intermediate positions and lower extreme set up the let-off hole, make the little sand after the separation of the sand-containing floc of curing sink to little sand district 38 of gathering along the let-off hole.
Wherein, mud pipe 22 is installed to the outside in mud district 37, and motorised valve three 23 is installed to mud pipe 22 upper end, and the mud sedimentary deposit that mud district 37 formed is discharged through mud pipe 22, motorised valve 23.
Wherein, a micro-sand circulation supplementing device 15 and a pressure gauge 16 are arranged at the top of the cyclone mud-sand separator 19, a mud-water discharge pipe 18 is arranged at the outer side of the upper end of the cyclone mud-sand separator 19, an electric valve II 17 is arranged at the upper end of the mud-water discharge pipe 18, the sewage enters the cyclone mud-sand separator 19 for mud-sand separation through an electric valve IV 26, a micro-sand circulating pump 25 and a micro-sand circulation sand inlet pipe 24 after flocculation, mixing, sedimentation and separation of heavy sludge and micro-sand, the separated sludge and water are discharged out of the system, the separated micro-sand returns to a mixing reaction area 33 of the inner barrel body 11 through a pipeline mixer 21, the micro-sand is recycled, and the micro-sand circulation reflux ratio is 5-20%.
The flocculating agent dosing device 4 consists of a dissolving cylinder, a stirrer, a dosing pump and a dosing pipe 39, the stirrer is arranged in the dissolving cylinder, the dissolving cylinder is connected with the dosing pipe 39 between the static mixer 2 and the stirring cylinder, the dosing pump is arranged at the upper end of the dosing pipe 39, and the flocculating agent is one or a combination of polyaluminium chloride, polyferric sulfate and ferric trichloride, specifically, the polyaluminium chloride is adopted in the invention, and the dosing amount is 30-80 mg/l.
Wherein the polymer coagulant aid adding device 12 consists of a medicine dissolving cylinder, a stirrer, a medicine adding pump and a medicine supplying pipeline 13, the polymer coagulant aid is polymer polyacrylamide, the molecular weight is 12000 units, and the adding amount is 3-6 mg/l.
The cyclone sand-mud separator 19 is made of carbon steel injection molding or rubber lining, the top of the cyclone sand-mud separator is provided with a micro-sand circulation supplementing device 15, micro-sand is supplemented periodically according to the use condition, the lower part of the cyclone sand-mud separator 19 is provided with a conical hopper which is a micro-sand deposition area, the deposited micro-sand enters a mixing reaction area 33 in the inner barrel body 11 through a sand outlet pipe 20, a pipeline mixer 21, an electric valve 23, and a coagulant aid enters the pipeline mixer 21 through a polymer coagulant aid dosing device 12 and a drug supply pipeline 13, and synchronously enters the mixing reaction area 33 of the inner barrel body 11 together with the circulating micro-sand.
Wherein, PLC electric cabinet 29 control intake pump, motorised valve, charge device and agitator motor 8 of this device system, device such as little sand circulating pump 25 realize intelligent control, unmanned on duty, reduce the energy consumption.
Wherein the micro-sand is refined quartz sand with the particle size of 100-150 um.
The method of the high-efficiency micro-sand circulating precipitation device comprises the following steps:
the method comprises the following steps: sewage enters the sewage pipe 1, a dosing pump and a dosing pipe 39 are arranged between the flocculant dosing device 4 and the static mixer 2, a flocculant and the sewage are fully mixed and then enter the inner barrel body 11 along the tangential direction, the flocculant and the sewage flow upwards into the flocculation reaction area 35 for 1-2min, a coagulant aid and circulating sand are fully mixed by the pipeline mixer 21 and then enter the inner barrel body 11 along the tangential direction, the coagulant aid and the circulating sand flow upwards into the mixing reaction area 33, and the retention time is 1-2 min;
step two: the mixed reaction zone 33 enters a curing reaction zone 34 through a water inlet 10, and sand discharge holes are formed in the middle positions and the lower ends of the two guide plates, so that the micro-sand separated from cured sand-containing floc sinks to a micro-sand aggregation zone 38 along the sand discharge holes;
step three: a sludge discharge pipe 22 is arranged on the outer side of the sludge area 37, an electric valve III 23 is arranged at the upper end of the sludge discharge pipe 22, and a sludge deposition layer formed in the sludge area 37 is discharged through the sludge discharge pipe 22 and the electric valve 23;
step four: the sewage is flocculated, mixed, precipitated and separated to obtain heavy sludge and micro-sand which are accumulated in a micro-sand accumulation area 38, the heavy sludge and the micro-sand enter a cyclone mud-sand separator 19 through an electric valve IV 26, a micro-sand circulating pump 25 and a micro-sand circulating sand inlet pipe 24 to be separated into mud and sand, the separated sludge and water are discharged out of the system, the separated micro-sand flows back to a mixed reaction area 33 of an inner barrel body 11 through a pipeline mixer 21 to be recycled, and the micro-sand circulating reflux ratio is 5-20%;
step five: the micro-sand circulation supplementing device 15 supplements micro-sand periodically according to the use condition, the lower part of the cyclone mud-sand separator 19 is provided with a conical hopper which is a micro-sand deposition area, the deposited micro-sand enters a mixing reaction area 33 in the inner barrel body 11 through a sand outlet pipe 20, a pipeline mixer 21 and an electric valve 23, and the coagulant aid enters the pipeline mixer 21 through a polymer coagulant aid dosing device 12 and a medicine supply pipeline 13 and enters the mixing reaction area 33 of the inner barrel body 11 synchronously with the circulating micro-sand.
Claims (10)
1. A high-efficiency micro-sand circulating sedimentation device comprises a flocculation reaction system (27), a curing reaction zone (34), a high-efficiency precipitator (28), a flocculant dosing device (4), a polymer coagulant aid dosing device (12) and a micro-sand circulating system, and is characterized in that the flocculation reaction system (27) is arranged inside the high-efficiency precipitator (28), the flocculation reaction system (27) comprises an inner barrel body (11), a stirring shaft (9) is rotatably arranged in the inner barrel body (11), a stirring paddle (31) is arranged at the upper end of the stirring shaft (9), a stirring motor (8) is arranged at the top of the inner barrel body (11), an output shaft of the stirring motor (8) is connected with the stirring shaft (9) through a coupler, a water passing port (10) is arranged at the upper end of the inner barrel body (11), the lower end of the inside of the flocculation reaction system (27) is set as the flocculation reaction zone (35), the upper end of the inside of the flocculation reaction system (27) is set as a mixed reaction zone (33), the outer side of the inner barrel body (11) is connected with a sewage pipe (1), and the upper end of the sewage pipe (1) is provided with a static mixer (2) and a check valve (3);
an outer barrel body (7) is arranged at the outer side of the inner barrel body (11) in the efficient precipitator (28), and a curing reaction zone (34) is formed between the inner barrel body (11) and the outer barrel body (7);
an inclined tube filler support (40) is arranged between the lower end of the outer barrel body (7) and a shell of the high-efficiency precipitator (28), an inclined tube filler bed (30) is arranged at the upper end of the inclined tube filler support (40), a sludge area (37) is arranged at the lower end of the inclined tube filler bed (30) in the shell, a diversion guide plate (32) is arranged in the sludge area (37), a clear water area (36) is arranged at the upper end of the inclined tube filler bed (30) in the shell, the top of the clear water area (36) is provided with a clear water area upper top plate (41), the clear water area (36) is provided with a clear water area water outlet weir trough (6), a clear water outlet (5) is formed in the outer portion of the shell, corresponds to the clear water area water outlet weir notch (6), the top of the outer barrel body (7) is connected with a clear water area upper top plate (41), a micro sand gathering area (38) is arranged at the bottom of the shell, and a micro sand circulating system is connected to the outer side of the high-efficiency precipitator (28).
2. The high-efficiency micro-sand circulating and precipitating device as claimed in claim 1, wherein the micro-sand circulating system comprises a cyclone sand-mud separator (19), a micro-sand circulating and supplementing device (15) and a PLC (programmable logic controller) electrical control box (29), the middle position of the inner barrel body (11) is connected with a sand outlet pipe (20), the upper end of the sand outlet pipe (20) is provided with a pipeline mixer (21) and an electric valve I (14), the other end of the sand outlet pipe (20) is connected with the cyclone sand-mud separator (19), a drug supply pipeline (13) is connected between the polymer coagulant aid dosing device (12) and the pipeline mixer (21), the cyclone sand-mud separator (19) and the micro-sand gathering area (38) are connected with a micro-sand circulating pipe sand inlet pipe (24), and the upper end of the micro-sand circulating pipe inlet pipe (24) is provided with a micro-sand circulating pump (25) and an electric valve IV (26).
3. The high-efficiency micro-sand circulating and precipitating device as claimed in claim 2, wherein the top of the cyclone sand-mud separator (19) is provided with a micro-sand circulating and supplementing device (15) and a pressure gauge (16), the outer side of the upper end of the cyclone sand-mud separator (19) is provided with a mud-water discharge pipe (18), and the upper end of the mud-water discharge pipe (18) is provided with a second electric valve (17).
4. The high-efficiency micro-sand circulating and precipitating device as claimed in claim 1, wherein the sewage pipe (1) and the sand outlet pipe (20) are arranged up and down in opposite directions along a tangent line entering the inner barrel body (11), and the formed rotational laminar flow is in a clockwise direction and is consistent with the rotating direction of the stirring paddle (31).
5. The high-efficiency micro-sand circulating and precipitating device as claimed in claim 1, wherein the water passing ports (10) are rectangular holes, and are uniformly distributed along the circumference of the inner barrel body (11), the hole diameter is 200 x 100mm, the interval is 200mm, and the water passing height of the water passing ports (10) is higher than 200 and 300mm of the water outlet weir grooves (6) of the clean water area.
6. The high-efficiency micro-sand circulating sedimentation device as claimed in claim 1, wherein the diversion guide plate (32) is arranged at the lower part of the inclined tube packed bed (30), the diversion guide plate (32) is made of carbon steel lining plastic or PE material and is composed of two guide plates with different rules, the guide plate is obliquely arranged, the installation angle is 45 or 55 degrees, one end of the guide plate is connected with the inner barrel body (11), the other end of the guide plate is connected with the inner wall of the shell, the included angle is 35 or 45 degrees, sand discharge holes are arranged at the middle position and the lower end of the two guide plates, and micro-sand separated from the aged sand-containing floc is enabled to sink to the micro-sand gathering area (38) along the sand discharge holes.
7. The high-efficiency micro-sand circulating and precipitating device as claimed in claim 1, wherein a sludge discharge pipe (22) is installed outside the sludge area (37), and an electric valve III (23) is installed at the upper end of the sludge discharge pipe (22).
8. The high-efficiency micro-sand circulating and precipitating device as claimed in claim 1, wherein the flocculant dosing device (4) is composed of a solution cylinder, a stirrer, a dosing pump and a dosing pipe (39), the solution cylinder is internally provided with the stirrer, the solution cylinder is connected with the dosing pipe (39) between the static mixer (2), and the dosing pump is installed at the upper end of the dosing pipe (39).
9. The high-efficiency micro-sand circulation sedimentation device as claimed in claim 1, wherein the polymer coagulant aid adding device (12) comprises a cartridge, a stirrer, a drug adding pump and a drug supply pipeline (13).
10. The method of the high efficiency micro-sand circulation sedimentation device according to any one of claims 1 to 9, comprising the steps of:
the method comprises the following steps: sewage enters the sewage pipe (1), a dosing pump and a dosing pipe (39) are arranged between the flocculating agent dosing device (4) and the static mixer (2), a flocculating agent and the sewage are fully mixed and then enter along the tangential direction of the inner barrel body (11), an ascending flow enters the flocculation reaction zone (35), the reaction time is 1-2min, a coagulant aid and circulating sand enter along the tangential direction of the inner barrel body (11) after being fully mixed by the pipeline mixer (21), the ascending flow enters the mixing reaction zone (33), and the retention time is 1-2 min;
step two: the mixed reaction zone (33) enters a curing reaction zone (34) through a water inlet (10), and sand discharge holes are formed in the middle positions and the lower ends of the two guide plates, so that the micro-sand separated from cured sand-containing floc sinks to a micro-sand gathering zone (38) along the leakage holes;
step three: a sludge discharge pipe (22) is arranged at the outer side of the sludge area (37), an electric valve (23) is arranged at the upper end of the sludge discharge pipe (22), and a sludge deposition layer formed in the sludge area (37) is discharged through the sludge discharge pipe (22) and the electric valve (23);
step four: heavy sludge and micro-sand after sewage is flocculated, mixed, precipitated and separated are accumulated in a micro-sand accumulation area (38), the heavy sludge and the micro-sand enter a sand pipe (24) through an electric valve IV (26), a micro-sand circulating pump (25) and a micro-sand circulating inlet pipe to enter a cyclone mud-sand separator (19) for mud-sand separation, the separated sludge and water are discharged out of the system, the separated micro-sand returns to a mixing reaction area (33) of an inner barrel body (11) through a pipeline mixer (21), the micro-sand is recycled, and the micro-sand circulating reflux ratio is 5-20%;
step five: the micro-sand circulating and supplementing device (15) supplements micro-sand periodically according to the use condition, the lower part of the cyclone mud-sand separator (19) is provided with a conical hopper which is a micro-sand deposition area, the deposited micro-sand enters a mixed reaction area (33) in the inner barrel body (11) through a sand outlet pipe (20), a pipeline mixer (21), an electric valve (23), and a coagulant aid enters the pipeline mixer (21) through a polymer coagulant aid dosing device (12) and a drug supply pipeline (13), and enters the mixed reaction area (33) of the inner barrel body (11) synchronously with the circulating micro-sand.
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| CN202210267006.XA CN114772693A (en) | 2022-03-18 | 2022-03-18 | Efficient micro-sand circulating precipitation device and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116655079A (en) * | 2023-07-31 | 2023-08-29 | 江苏通用环保集团有限公司 | Floating drainage efficient sedimentation tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116655079A (en) * | 2023-07-31 | 2023-08-29 | 江苏通用环保集团有限公司 | Floating drainage efficient sedimentation tank |
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