CN107285554B - Distributed sewage treatment method - Google Patents
Distributed sewage treatment method Download PDFInfo
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- CN107285554B CN107285554B CN201710414524.9A CN201710414524A CN107285554B CN 107285554 B CN107285554 B CN 107285554B CN 201710414524 A CN201710414524 A CN 201710414524A CN 107285554 B CN107285554 B CN 107285554B
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F2303/00—Specific treatment goals
- C02F2303/26—Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
Abstract
The invention discloses a distributed sewage treatment method, which comprises the following steps: (1) construction of a regulating tank, (2) construction of an anoxic tank, (3) construction of a membrane biological reaction tank, (4) construction of a sludge tank and a middle water tank, and (5) sewage treatment. The sewage treatment method has simple steps, reduces the pressure of sewage treatment of the urban centralized pipe network, can directly utilize the treated reclaimed water, effectively protects water resources, reduces the operating cost and is convenient to manage and maintain.
Description
Technical Field
The invention relates to a distributed sewage treatment method.
Background
Decentralized wastewater treatment means a new and complex approach to meet the requirements of wastewater management and resource utilization in small areas, which allows for a long-term solution with separate small-scale wastewater treatment and in-situ soil treatment systems.
In the prior art, the distributed sewage treatment is only to simply filter the sewage, but can not realize the reuse of reclaimed water, easily causes the waste of water resources, and is relatively complicated in maintenance and management.
Disclosure of Invention
The invention aims to provide a technical scheme of a distributed sewage treatment method aiming at the defects in the prior art, so that the pressure of sewage treatment of an urban centralized pipe network is reduced, the treated reclaimed water can be directly utilized, the water resource is effectively protected, the operating cost is reduced, and the management and the maintenance are convenient.
In order to solve the technical problems, the invention adopts the following technical scheme:
a distributed sewage treatment method is characterized by comprising the following steps:
(1) construction of equalizing basin
a. Firstly, determining a construction area according to design requirements, excavating the corresponding construction area to a set depth by using an excavator to form a regulating reservoir, then respectively carrying out tamping treatment on the side surface and the bottom surface of the regulating reservoir, and then pouring by using concrete, wherein the pouring thickness is 10-15 cm;
b. after the concrete reaches a set strength, erecting a reinforcing plate rib inside the adjusting tank, then installing a second water pipe in the adjusting tank, enabling the distance between the port of the second water pipe and the bottom surface of the adjusting tank to be smaller than 25cm, installing a water suction pump on the second water pipe, and then fixing the second water pipe on the inner side surface of the adjusting tank;
c. then, a filter screen is arranged at a position 20-30 cm above the water suction pump, a second water delivery pipe penetrates through the filter screen, the penetrating position is fixed by an iron wire, and then a stirring and crushing device is arranged above the filter screen through a support frame, so that the stirring and crushing device is fixedly connected with an adjusting tank, and the bottom end of the stirring and crushing device is ensured to be spaced from the filter screen by more than 10 cm;
d. finally, fixedly connecting a sewage source with the mixed flow groove through a water inlet pipe, leading out a first water pipe on the mixed flow groove, enabling the water outlet end of the first water pipe to be located 20cm below the support frame in the adjusting tank, and then fixing the water outlet end of the first water pipe with the side wall of the adjusting tank;
(2) construction of anoxic pond
a. After the construction of the regulating reservoir is finished, excavating an anoxic reservoir along the horizontal direction of the regulating reservoir and at a position 1-1.5 m away from the regulating reservoir, wherein the depth of the anoxic reservoir is equal to that of the regulating reservoir, excavating 5 times, and the depth of each excavation is equal;
b. after the whole anoxic pond is excavated, tamping the inner wall and the bottom surface of the anoxic pond by using a tamper, tamping the side surface close to the regulating pond by using a handheld tamper, then pouring concrete along the bottom surface and the side surface of the anoxic pond, wherein the thickness of the concrete is 15-20 cm, and after the concrete reaches a set strength, installing reinforcing plate ribs in the anoxic pond for supporting and fixing;
c. finally, hoisting the sealing cover to the upper part of the anoxic tank by a hoisting machine, lowering the sealing cover to a position 0.5m away from the tank opening along the anoxic tank, manually supporting the sealing cover to install the sealing cover to a set position, arranging two through holes on the sealing cover, installing a water outlet of the second water conveying pipe into the through hole close to one side of the regulating tank, and sealing a connected gap;
(3) membrane biological reaction tank construction
a. After the construction of the anoxic pond is finished, excavating the membrane biological reaction pond along the horizontal direction of the regulating pond and the anoxic pond and at a position 1-1.5 m away from the anoxic pond, wherein the excavation depth of the membrane biological reaction pond is equal to that of the anoxic pond, excavating is carried out for 5 times, and the excavation depth is the same each time;
b. after the whole membrane biological reaction tank is excavated, tamping the inner wall and the bottom surface of the membrane biological reaction tank by using a tamper, pouring by using concrete, wherein the pouring thickness is 15-20 cm, and after the concrete reaches a set strength, installing reinforcing plate ribs in the membrane biological reaction tank for supporting and fixing;
c. then, arranging a water seepage hole at a position which is 30-50 cm away from the top end on the side surface close to the anoxic tank, meanwhile, installing a return pipe at one side close to the anoxic tank in the membrane biological reaction tank, installing a return pump on the return pipe, and fixing the other end of the return pipe in a through hole on a sealing cover;
d. then paving a sludge conveying pipe at the bottom of the membrane biological reaction tank, fixing the vertical section of the sludge conveying pipe on the side wall of the membrane biological reaction tank, installing a sludge pump, uniformly arranging sludge suction holes on the sludge conveying pipe at the bottom, installing a gas conveying pipe above the sludge conveying pipe at the bottom, connecting the gas conveying pipe with an air blower, fixing the air blower at the outer side of the top end of the membrane biological reaction tank, and finally installing a separation cover above the gas conveying pipe and at a position 20-30 cm away from the gas conveying pipe;
(4) construction of sludge tank and middle water tank
a. After the membrane biological reaction tank is constructed, sequentially excavating a sludge tank and a middle water tank along the horizontal direction of a regulating tank, an anoxic tank and a membrane biological reaction tank, pouring concrete with the thickness of 15-20 cm, and after the concrete reaches a set strength, installing reinforcing plate ribs in the sludge tank and the middle water tank for supporting and fixing;
b. then, introducing the pipe orifice of the sludge conveying pipe above the sludge tank and fixing;
c. then, the separation cover is connected into the middle water pool through a third water pipe, the third water pipe is fixed above the middle water pool, and then a vacuum meter, a self-sucking pump, a regulating valve and a flowmeter are sequentially installed on the third water pipe from left to right;
d. finally, a reclaimed water recycling pipe is arranged on the side wall of the reclaimed water pool at a position 30cm away from the top end, and is connected with an external pipeline;
(5) treatment of sewage
Treat that whole distributed sewage treatment system construction ends, introduce the equalizing basin with sewage from the inlet tube through the mixed flow groove, sewage makes the separation of particle impurity under the effect of filter screen, start stirring reducing mechanism and stir crushing the back with particle impurity, get into the oxygen deficiency pond through the second raceway under the effect of suction pump, the bacterium in oxygen deficiency pond carries out decomposition treatment to sewage after, sewage gets into membrane biological reaction pond through the infiltration hole, the mud of membrane biological reaction bottom of the pool portion gets into the sludge impoundment through the mud pipe under the effect of suction pump, and the water after the processing directly gets into third raceway and gets into the reclaimed water pond, through reclaimed water recycling pipe recycle.
Through the distributed sewage treatment method, domestic sewage can be quickly mixed and then uniformly pretreated, the sewage is treated from the source, the pressure of sewage treatment of a city centralized pipe network is reduced, the reclaimed water obtained after treatment can be directly utilized, the water resource is effectively protected, the operating cost is reduced, and the management and the maintenance are convenient.
Further, the stirring and crushing device in the step (1) comprises a motor, a driving wheel, a driven wheel, a clamping mechanism and a stirring and crushing mechanism, wherein the motor is fixed on the waterproof board, a positioning plate is horizontally arranged above the motor and is connected with the waterproof board through a connecting plate, the driving wheel is fixedly connected with the motor and is positioned above the positioning plate, the driven wheel is connected with the driving wheel through a conveying belt, a clamping block is arranged between the driving wheel and the driven wheel, a T-shaped plate is fixedly connected onto the clamping block, the driven wheel is connected with the T-shaped plate through a rotating shaft, a sleeve is arranged below the driven wheel, the clamping mechanism is uniformly distributed on the side surface of the sleeve, the stirring and crushing mechanism is positioned below the clamping mechanism, the driving wheel is driven to rotate through the motor, the driven wheel is driven to rotate through the conveying belt, the stirring and crushing mechanism rotates under the action of, the waterproof board can play the effect of protection motor, prevents to splash to the motor and influence the normal work of motor stirring kibbling in-process sewage, and the T shaped plate can play the effect of location, makes the pivot more reliable and more stable when rotatory.
Further, be provided with gravity dish and balance plate from the top of driving wheel, the equal fixed connection of gravity dish and balance plate is in the pivot, and gravity dish and balance plate can make the pivot remain stable when rotatory, prevent that stirring rubbing crusher from taking place to rock and influence its work efficiency when rotatory.
Furthermore, clamping mechanism is including pressing from both sides tight piece, stopper and regulating block, and stopper fixed connection is on telescopic side, presss from both sides tight piece and passes through the regulating block and connect the stopper, and clamping mechanism can make things convenient for the installation of pivot to dismantle, can drive through the regulating block and press from both sides tight piece and remove, realizes the tight location of clamp to the pivot.
Further, stirring rubbing crusher constructs including carousel and crushing pole, and the equal fixed connection of carousel and crushing pole is in the pivot, parallel distribution about the carousel, and crushing pole evenly distributed can prevent effectively through the design of carousel that granule impurity from splashing out at the stirring crushing process between two carousels, has improved the security, can prevent simultaneously that granule impurity from striking the filter screen fast and causing the destruction, and crushing pole is used for smashing granule impurity.
Further, the separation cover in step (3) includes two upper and lower parallel arrangement's buckle, evenly is provided with the baffle between two buckles, is provided with the cutting ferrule on the buckle that is located the top, and the center department of cutting ferrule is provided with the limbers, and the cutting ferrule passes through annular ring and connects the buckle, and when from the suction pump during operation, it is rotatory to drive the separation cover through the cutting ferrule, and then makes in the water suction separation cover after handling to from the limbers through third raceway entering pond, the baffle can increase the flow velocity of rivers.
Furthermore, the clapboard is provided with a counter-flow pipe which can make the sludge flow downwards and prevent the sludge from entering the reclaimed water tank through the limbers.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the sewage treatment method can quickly mix domestic sewage and then uniformly pretreat the sewage, and treat the sewage from the source, so that the pressure of sewage treatment of a city centralized pipe network is reduced, the treated reclaimed water can be directly utilized, the water resource is effectively protected, the operating cost is reduced, and the management and the maintenance are convenient;
2. the motor drives the driving wheel to rotate, and the driving wheel is driven to rotate through the conveying belt, so that the stirring and crushing mechanism rotates under the action of the clamping mechanism, sewage is stirred and crushed, and the blockage of the water conveying pipe caused by larger particle impurities is prevented;
3. the waterproof plate can play a role in protecting the motor, so that sewage is prevented from splashing on the motor to influence the normal work of the motor in the stirring and crushing process, and the T-shaped plate can play a role in positioning, so that the rotating shaft is more stable and reliable in rotation;
4. the clamping mechanism can facilitate the installation and the disassembly of the rotating shaft, and the clamping piece can be driven to move through the adjusting block, so that the clamping and the positioning of the rotating shaft are realized.
The sewage treatment method has simple steps, reduces the pressure of sewage treatment of the urban centralized pipe network, can directly utilize the treated reclaimed water, effectively protects water resources, reduces the operating cost and is convenient to manage and maintain.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a flow chart of a distributed sewage treatment system in a distributed sewage treatment method according to the present invention;
FIG. 2 is a schematic view of the stirring and pulverizing apparatus according to the present invention;
fig. 3 is a schematic structural view of the separation cover of the present invention.
In the figure: 1-a regulating reservoir; 2-an anoxic tank; 3-a membrane biological reaction tank; 4-a sludge tank; 5-a middle water pool; 6-a mixing trough; 7-water inlet pipe; 8-a first water delivery pipe; 9-stirring and crushing device; 10-a support frame; 11-a filter screen; 12-a second water conveying pipe; 13-a water pump; 14-a sealing cover; 15-water seepage holes; 16-a return conduit; 17-a reflux pump; 18-a blower; 19-gas pipe; 20-a separation hood; 21-a third water delivery pipe; 22-vacuum gauge; 23-a self-priming pump; 24-a regulating valve; 25-a flow meter; 26-a mud conveying pipe; 27-a mud pump; 28-a mud suction hole; 29-reclaimed water recycling pipe; 30-positioning plate; 31-connector tiles; 32-a waterproof sheet; 33-a motor; 34-a driving wheel; 35-a driven wheel; 36-a conveyor belt; 37-gravity plate; 38-a balancing plate; 39-a fixture block; a 40-T shaped plate; 41-a sleeve; 42-a clamping piece; 43-a limiting block; 44-a conditioning block; 45-a rotating shaft; 46-a turntable; 47-crushing rods; 48-cutting sleeve; 49-water through holes; 50-buckle plate; 51-an annular ring; 52-a separator; 53-counter flow tube.
Detailed Description
As shown in fig. 1 to 3, a distributed sewage treatment method according to the present invention comprises the following steps:
(1) construction of equalizing basin
a. Firstly, determining a construction area according to design requirements, excavating the corresponding construction area to a set depth by using an excavator to form a regulating pool 1, then respectively tamping the side surface and the bottom surface of the regulating pool 1, and pouring by using concrete, wherein the pouring thickness is 10-15 cm;
b. after the concrete reaches a set strength, erecting a reinforcing plate rib inside the adjusting tank 1, then installing a second water pipe 12 in the adjusting tank 1, enabling the distance between the port of the second water pipe 12 and the bottom surface of the adjusting tank 1 to be less than 25cm, installing a water suction pump 13 on the second water pipe 12, and then fixing the second water pipe 12 on the inner side surface of the adjusting tank 1;
c. then, a filter screen 11 is arranged at a position 20-30 cm above a water pump 13, a second water delivery pipe 12 penetrates through the filter screen 11, the penetrating position is fixed by using iron wires, a stirring and crushing device 9 is arranged above the filter screen 11 through a support frame 10, the stirring and crushing device 9 is fixedly connected with the adjusting tank 1, and the distance of more than 10cm between the bottom end of the stirring and crushing device 9 and the filter screen 11 is guaranteed;
the stirring and crushing device 9 comprises a motor 33, a driving wheel 34, a driven wheel 35, a clamping mechanism and a stirring and crushing mechanism, wherein the motor 33 is fixed on a waterproof board 32, a positioning board 30 is horizontally arranged above the motor 33, the positioning board 30 is connected with the waterproof board 32 through a connecting board 31, the driving wheel 34 is fixedly connected with the motor 33, the driving wheel 34 is positioned above the positioning board 30, the driven wheel 35 is connected with the driving wheel 34 through a conveying belt 36, a clamping block 39 is arranged between the driving wheel 34 and the driven wheel 35, a T-shaped board 40 is fixedly connected onto the clamping block 39, the driven wheel 35 is connected with the T-shaped board 40 through a rotating shaft 45, a sleeve 41 is arranged below the driven wheel 35, the clamping mechanism is uniformly distributed on the side surface of the sleeve 41, the stirring and crushing mechanism is positioned below the clamping mechanism, the driving wheel 34 is driven by the motor 33 to, the realization is smashed the stirring of sewage, prevent that great granule impurity from causing the jam of raceway, waterproof board 32 can play the effect of protection motor 33, prevent to splash to motor 33 and influence motor 33's normal work stirring kibbling in-process sewage, T shaped plate 40 can play the effect of location, make pivot 45 more reliable and more stable when rotatory, the top from driving wheel 35 is provided with gravity dish 37 and balance plate 38, gravity dish 37 and the equal fixed connection of balance plate 38 are on pivot 45, gravity dish 37 and balance plate 38 can make pivot 45 remain stable when rotatory, prevent that stirring rubbing crusher from taking place to rock when rotatory and influence its work efficiency.
Clamping mechanism includes pressing from both sides tight piece 42, stopper 43 and regulating block 44, and stopper 43 fixed connection is on the side of sleeve 41, presss from both sides tight piece 42 and passes through regulating block 44 and connect stopper 43, and clamping mechanism can make things convenient for the installation of pivot 45 to dismantle, can drive through regulating block 44 and press from both sides tight piece 42 and remove, realizes the tight location of clamp to pivot 45.
Stirring rubbing crusher constructs including carousel 46 and crushing pole 47, carousel 46 and the equal fixed connection of crushing pole 47 are on pivot 45, parallel distribution about carousel 46, crushing pole 47 evenly distributed is between two carousel 46, can prevent effectively through the design of carousel 46 that particle impurity from splashing in the crushing process of stirring out, has improved the security, can prevent simultaneously that particle impurity from striking filter screen 11 fast and causing the destruction, crushing pole 47 is used for smashing particle impurity.
d. Finally, fixedly connecting a source of the sewage with the mixed flow groove 6 through a water inlet pipe 7, leading out a first water pipe 8 on the mixed flow groove 6, enabling the water outlet end of the first water pipe 8 to be located 20cm below a support frame 10 in the adjusting tank 1, and then fixing the water outlet end of the first water pipe with the side wall of the adjusting tank 1;
(2) construction of anoxic pond
a. After the construction of the adjusting tank 1 is finished, excavating an anoxic tank 2 along the horizontal direction of the adjusting tank 1 at a position 11-1.5 m away from the adjusting tank, wherein the depth of the anoxic tank 2 is equal to that of the adjusting tank 1, excavating 5 times, and the depth of each excavation is equal;
b. after the whole anoxic pond 2 is excavated, tamping the inner wall and the bottom surface of the anoxic pond 2 by using a tamper, tamping the side surface close to the regulating pond 1 by using a handheld tamper, then pouring concrete along the bottom surface and the side surface of the anoxic pond 2, wherein the thickness of the concrete is 15-20 cm, and after the concrete reaches a set strength, installing reinforcing plate ribs in the anoxic pond 2 for supporting and fixing;
c. finally, the sealing cover 14 is lifted to the upper side of the anoxic tank 2 through a lifting machine, the sealing cover 14 is lowered to a position 0.5m away from the tank opening along the anoxic tank 2, the sealing cover 14 is manually supported to be installed to a set position, two through holes are formed in the sealing cover 14, the water outlet of the second water pipe 12 is installed in the through hole close to one side of the regulating tank 1, and the connected gap is sealed;
(3) membrane biological reaction tank construction
a. After the construction of the anoxic pond 2 is finished, excavating the membrane biological reaction pond 3 along the horizontal direction of the regulating pond 1 and the anoxic pond 2 and at a position 21-1.5 m away from the anoxic pond, wherein the excavation depth of the membrane biological reaction pond 3 is equal to that of the anoxic pond 2, excavating is carried out for 5 times, and the excavation depth is the same each time;
b. after the whole membrane biological reaction tank 3 is excavated, tamping the inner wall and the bottom surface of the membrane biological reaction tank by using a tamper, pouring concrete with the pouring thickness of 15-20 cm, and installing reinforcing plate bars in the membrane biological reaction tank 3 for supporting and fixing after the concrete reaches a set strength;
c. then, arranging a water seepage hole 15 on the side surface close to the anoxic tank 2 at a position 30-50 cm away from the top end, meanwhile, installing a return pipe 16 on one side close to the anoxic tank 2 in the membrane biological reaction tank 3, installing a return pump 17 on the return pipe 16, and fixing the other end of the return pipe 16 in a through hole on the sealing cover 14;
d. then paving a sludge conveying pipe 26 at the bottom of the membrane biological reaction tank 3, fixing the vertical section of the sludge conveying pipe 26 on the side wall of the membrane biological reaction tank 3, installing a sludge pump 27, uniformly arranging sludge suction holes 28 on the sludge conveying pipe 26 at the bottom, then installing a gas conveying pipe 19 above the sludge conveying pipe 26 at the bottom, connecting the gas conveying pipe 19 with an air blower 18, fixing the air blower 18 at the outer side of the top end of the membrane biological reaction tank 3, and finally installing a separation cover 20 above the gas conveying pipe 19 and at a position which is 1920-30 cm away from the gas conveying pipe;
(4) Construction of sludge tank and middle water tank
a. After the membrane biological reaction tank 3 is constructed, sequentially excavating a sludge tank 4 and a middle water tank 5 along the horizontal direction of an adjusting tank 1, an anoxic tank 2 and a membrane biological reaction tank 3, wherein the depth of the sludge tank 4 and the depth of the middle water tank 5 are equal to that of the membrane biological reaction tank 3, pouring with concrete, wherein the pouring thickness is 15-20 cm, and after the concrete reaches a set strength, installing reinforcing plate ribs in the sludge tank 4 and the middle water tank 5 for supporting and fixing;
b. then the pipe orifice of the mud conveying pipe 26 is led into the upper part of the sludge tank 4 and is fixed;
c. then, the separation cover 20 is connected into the middle water pool 5 through a third water pipe 21, the third water pipe 21 is fixed above the middle water pool 5, and then a vacuum gauge 22, a self-sucking pump 23, an adjusting valve 24 and a flow meter 25 are sequentially arranged on the third water pipe 21 from left to right;
d. finally, a reclaimed water recycling pipe 29 is arranged on the side wall of the reclaimed water tank 5 at a position 30cm away from the top end and is connected with an external pipeline;
(5) treatment of sewage
Treat that whole distributed sewage treatment system construction is ended, introduce equalizing basin 1 with sewage from inlet tube 7 through mixing groove 6, sewage makes the separation of granule impurity under the effect of filter screen 11, start stirring reducing mechanism 9 and stir crushing the back with granule impurity, get into oxygen deficiency pond 2 through second raceway 12 under the effect of suction pump 13, the bacterium of oxygen deficiency pond 2 decomposes the back to sewage, sewage passes through infiltration hole 15 and gets into membrane biological reaction pond 3, the mud of membrane biological reaction pond 3 bottom gets into sludge impoundment 4 through mud pipe 26 under the effect of suction pump 27, and the water after the processing directly gets into third raceway 21 and gets into reclaimed water pond 5, through reclaimed water recycling pipe 29 recycle.
Through the distributed sewage treatment method, domestic sewage can be quickly mixed and then uniformly pretreated, the sewage is treated from the source, the pressure of sewage treatment of a city centralized pipe network is reduced, the reclaimed water obtained after treatment can be directly utilized, the water resource is effectively protected, the operating cost is reduced, and the management and the maintenance are convenient.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple variations, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are within the scope of the present invention.
Claims (4)
1. A distributed sewage treatment method is characterized by comprising the following steps:
(1) construction of equalizing basin
a. Firstly, determining a construction area according to design requirements, excavating the corresponding construction area to a set depth by using an excavator to form a regulating reservoir, then respectively carrying out tamping treatment on the side surface and the bottom surface of the regulating reservoir, and then pouring by using concrete, wherein the pouring thickness is 10-15 cm;
b. after the concrete reaches a set strength, erecting a reinforcing plate rib inside the adjusting tank, then installing a second water pipe in the adjusting tank, enabling the distance between the port of the second water pipe and the bottom surface of the adjusting tank to be smaller than 25cm, installing a water suction pump on the second water pipe, and then fixing the second water pipe on the inner side surface of the adjusting tank;
c. then, a filter screen is arranged at a position 20-30 cm above the water suction pump, a second water delivery pipe penetrates through the filter screen, the penetrating position is fixed by an iron wire, and then a stirring and crushing device is arranged above the filter screen through a support frame, so that the stirring and crushing device is fixedly connected with an adjusting tank, and the bottom end of the stirring and crushing device is ensured to be spaced from the filter screen by more than 10 cm; the stirring and crushing device comprises a motor, a driving wheel, a driven wheel, a clamping mechanism and a stirring and crushing mechanism, wherein the motor is fixed on a waterproof board, a positioning plate is horizontally arranged above the motor, the positioning plate is connected with the waterproof board through a connecting plate, the driving wheel is fixedly connected with the motor, the driving wheel is positioned above the positioning plate, the driven wheel is connected with the driving wheel through a conveying belt, a clamping block is arranged between the driving wheel and the driven wheel, a T-shaped plate is fixedly connected onto the clamping block, the driven wheel is connected with the T-shaped plate through a rotating shaft, sleeves are arranged below the driven wheel, the clamping mechanism is uniformly distributed on the side surface of each sleeve, and the stirring and crushing mechanism is positioned below the clamping mechanism;
d. finally, fixedly connecting a sewage source with the mixed flow groove through a water inlet pipe, leading out a first water pipe on the mixed flow groove, enabling the water outlet end of the first water pipe to be located 20cm below the support frame in the adjusting tank, and then fixing the water outlet end of the first water pipe with the side wall of the adjusting tank;
(2) construction of anoxic pond
a. After the construction of the regulating reservoir is finished, excavating an anoxic reservoir along the horizontal direction of the regulating reservoir and at a position 1-1.5 m away from the regulating reservoir, wherein the depth of the anoxic reservoir is equal to that of the regulating reservoir, excavating 5 times, and the depth of each excavation is equal;
b. after the whole anoxic pond is excavated, tamping the inner wall and the bottom surface of the anoxic pond by using a tamper, tamping the side surface close to the regulating pond by using a handheld tamper, then pouring concrete along the bottom surface and the side surface of the anoxic pond, wherein the thickness of the concrete is 15-20 cm, and after the concrete reaches a set strength, installing reinforcing plate ribs in the anoxic pond for supporting and fixing;
c. finally, hoisting the sealing cover to the upper part of the anoxic tank by a hoisting machine, lowering the sealing cover to a position 0.5m away from the tank opening along the anoxic tank, manually supporting the sealing cover to install the sealing cover to a set position, arranging two through holes on the sealing cover, installing a water outlet of the second water conveying pipe into the through hole close to one side of the regulating tank, and sealing a connected gap;
(3) membrane biological reaction tank construction
a. After the construction of the anoxic pond is finished, excavating the membrane biological reaction pond along the horizontal direction of the regulating pond and the anoxic pond and at a position 1-1.5 m away from the anoxic pond, wherein the excavation depth of the membrane biological reaction pond is equal to that of the anoxic pond, excavating is carried out for 5 times, and the excavation depth is the same each time;
b. after the whole membrane biological reaction tank is excavated, tamping the inner wall and the bottom surface of the membrane biological reaction tank by using a tamper, pouring by using concrete, wherein the pouring thickness is 15-20 cm, and after the concrete reaches a set strength, installing reinforcing plate ribs in the membrane biological reaction tank for supporting and fixing;
c. then, arranging a water seepage hole at a position which is 30-50 cm away from the top end on the side surface close to the anoxic tank, meanwhile, installing a return pipe at one side close to the anoxic tank in the membrane biological reaction tank, installing a return pump on the return pipe, and fixing the other end of the return pipe in a through hole on a sealing cover;
d. then paving a sludge conveying pipe at the bottom of the membrane biological reaction tank, fixing the vertical section of the sludge conveying pipe on the side wall of the membrane biological reaction tank, installing a sludge pump, uniformly arranging sludge suction holes on the sludge conveying pipe at the bottom, installing a gas conveying pipe above the sludge conveying pipe at the bottom, connecting the gas conveying pipe with an air blower, fixing the air blower at the outer side of the top end of the membrane biological reaction tank, and finally installing a separation cover above the gas conveying pipe and at a position 20-30 cm away from the gas conveying pipe; the separation cover comprises two buckling plates which are arranged in parallel up and down, a partition plate is uniformly arranged between the two buckling plates, a clamping sleeve is arranged on the buckling plate above the separation cover, a water through hole is formed in the center of the clamping sleeve, and the clamping sleeve is connected with the buckling plates through an annular ring; when the self-priming pump works, the cutting sleeve drives the separation cover to rotate, so that the treated water is sucked into the separation cover and enters the reclaimed water pool from the water through hole through a third water delivery pipe, the partition plates can increase the flowing speed of water flow, and are provided with counter-flow pipes which can enable sludge to flow downwards and prevent the sludge from entering the reclaimed water pool through the water through hole;
(4) construction of sludge tank and middle water tank
a. After the membrane biological reaction tank is constructed, sequentially excavating a sludge tank and a middle water tank along the horizontal direction of a regulating tank, an anoxic tank and a membrane biological reaction tank, pouring concrete with the thickness of 15-20 cm, and after the concrete reaches a set strength, installing reinforcing plate ribs in the sludge tank and the middle water tank for supporting and fixing;
b. then, introducing the pipe orifice of the sludge conveying pipe above the sludge tank and fixing;
c. then, the separation cover is connected into the middle water pool through a third water pipe, the third water pipe is fixed above the middle water pool, and then a vacuum meter, a self-sucking pump, a regulating valve and a flowmeter are sequentially installed on the third water pipe from left to right;
d. finally, a reclaimed water recycling pipe is arranged on the side wall of the reclaimed water pool at a position 30cm away from the top end, and is connected with an external pipeline;
(5) treatment of sewage
Treat that whole distributed sewage treatment system construction ends, introduce the equalizing basin with sewage from the inlet tube through the mixed flow groove, sewage makes the separation of particle impurity under the effect of filter screen, start stirring reducing mechanism and stir crushing the back with particle impurity, get into the oxygen deficiency pond through the second raceway under the effect of suction pump, the bacterium in oxygen deficiency pond carries out decomposition treatment to sewage after, sewage gets into membrane biological reaction pond through the infiltration hole, the mud of membrane biological reaction bottom of the pool portion gets into the sludge impoundment through the mud pipe under the effect of suction pump, and the water after the processing directly gets into third raceway and gets into the reclaimed water pond, through reclaimed water recycling pipe recycle.
2. The distributed sewage treatment method according to claim 1, wherein: the top from the driving wheel is provided with gravity dish and balance plate, the gravity dish with the equal fixed connection of balance plate is in the pivot.
3. The distributed sewage treatment method according to claim 1, wherein: the clamping mechanism comprises a clamping piece, a limiting block and an adjusting block, the limiting block is fixedly connected to the side face of the sleeve, and the clamping piece is connected with the limiting block through the adjusting block.
4. The distributed sewage treatment method according to claim 1, wherein: stirring rubbing crusher constructs including carousel and crushing pole, the carousel with the equal fixed connection of crushing pole is in the pivot, parallel distribution about the carousel, crushing pole evenly distributed is two between the carousel.
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| CN110255811B (en) * | 2019-05-31 | 2021-12-14 | 浙江水利水电学院 | Distributed rural domestic sewage treatment device and method |
| CN110713312A (en) * | 2019-09-24 | 2020-01-21 | 浙江水利水电学院 | Integrated treatment device and method for liquid garbage |
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