CN108147512B

CN108147512B - Sewage treatment system

Info

Publication number: CN108147512B
Application number: CN201711327665.3A
Authority: CN
Inventors: 王健
Original assignee: Ningbo Qing Zhi Environmental Protection Technology Co Ltd
Current assignee: Shandong Kanglu Equipment Installation Co ltd
Priority date: 2017-12-13
Filing date: 2017-12-13
Publication date: 2020-01-31
Anticipated expiration: 2037-12-13
Also published as: CN108147512A

Abstract

The invention relates to the technical field of sewage treatment, in particular to an sewage treatment system which comprises a collecting tank, a mixing tank and a sedimentation tank, wherein a sewage collecting pipe and a waste residue discharging pipe are arranged on the collecting tank, an upper clear liquid discharging pipe, a lower dirt discharging pipe and a communicating pipe communicated with the mixing tank are arranged on the sedimentation tank, the collecting tank and the mixing tank are separated through a partition wall, a through hole is formed in the partition wall, the through hole is sealed by a folding telescopic layer, a flow guide part is fixed on the folding telescopic layer, a cavity is further formed in the partition wall, an elastic structure is arranged in the cavity, a supporting plate is fixedly arranged on the mixing tank, a feeding box and a cam are arranged on the supporting plate, the cam is used for controlling the feeding box to feed materials intermittently, the cam is also used for controlling the flow guide part to pour the sewage in the collecting tank into the mixing tank, a stirring rod located in the mixing tank is fixed at the bottom of the flow guide part, and a rack for driving.

Description

Sewage treatment system

Technical Field

The invention relates to the technical field of sewage treatment, in particular to sewage treatment systems.

Background

The loss caused by water pollution accounts for about 2 percent of GDP every year in China, and the water pollution condition is continuously intensified, so that the sewage treatment and regeneration industry is concerned at present.

The anaerobic tank is mainly used for releasing phosphorus, meanwhile, part of organic matters are aminated, COD in water can also be removed, and the mixed liquid in the anoxic tank can flow back to the anaerobic tank through internal circulation; the anoxic tank is mainly used for denitrification, nitrate nitrogen flows back to the anoxic tank from the aerobic tank through internal circulation, and part of immobilized microorganism balls in the anoxic tank flows back from the sedimentation tank; the aerobic tank is used for removing BOD and ammonia nitrogen organic matters in the water, nitrifying and absorbing phosphorus, and decomposing the organic matters in the water into inorganic matters; the sedimentation tank is used for purifying water, and the water precipitated in the sedimentation tank can be directly discharged.

The sewage sedimentation tank mainly has the function of separating mud and water, and conventionally adopts free sedimentation, flocculation sedimentation, group sedimentation and compression sedimentation, wherein the flocculation sedimentation is a common sewage sedimentation treatment mode, is just that a coagulant is directly added into the sewage tank, the flocculation sedimentation is a process that particles are flocculated and settled in water, after the coagulant is added into the water, colloid and dispersed particles of suspended matters generate floccules under the interaction of molecular force, and the floccules collide with each other and are coagulated in the sedimentation process, so that the size and the mass of the floccules are continuously increased, and the sedimentation speed is continuously increased.

The prior art has the following technical problems: in the prior art, the coagulant is directly added into the sewage tank, the coagulant and the sewage cannot be sufficiently and quickly mixed, and mutual collision and coagulation of the coagulant and the sewage cannot be accelerated in the sedimentation process, so that the sedimentation efficiency is influenced.

Disclosure of Invention

The invention aims to provide sewage treatment systems, which can accelerate the mutual collision and coagulation of colloids and dispersed particles of suspended matters in the sedimentation process.

In order to achieve the above purpose, the basic scheme of the invention is as follows:

a sewage treating system is composed of collecting pool, mixing pool, depositing pool, sewage collecting pipe and waste dregs discharging pipe, supernatant discharging pipe, dirt discharging pipe and communicating pipe, the collecting pool and mixing pool are separated by partition wall, the partition wall has through hole, the guide part inclined downward toward collecting pool, the cavity under said through hole, elastic structure for restoring said guide part, supporting plate on mixing pool, the feeding box for coagulant and cam driven by motor, the cam for controlling the feeding box to feed the mixture, the guide part consisting of feeding end and discharging end, the feeding box near , the bottom of mixing pool, piston, spring, air inlet, and piston rod.

The beneficial effect that this scheme produced is:

1. in addition, sewage in the collecting tank enters the mixing tank mainly in a mode that the guide part is pressed by the cam, so that the guide part is changed from the original state of inclining downwards towards the collecting tank to the state of inclining towards the mixing tank, sewage is intermittently introduced into the mixing tank, times of sewage can be added every time times of coagulant is added, the sewage is flushed into the mixing tank from the inclined guide part, and mutual collision and condensation of colloids and dispersed particles of suspended matters in the sedimentation process can be accelerated.

2. When the guide part in the scheme is pressed times by the cam, the stirring rod at the bottom of the guide part can stir sewage in the mixing tank times, when the cam leaves the guide part, the elastic structure can enable the guide part to reset and change back to incline downwards towards the direction of the collecting tank again, and in the process, the stirring rod can stir sewage in the mixing tank again.

In addition, in the process of downward movement of the stirring rod, the lower part of the stirring rod can be inserted into the rotating cavity, the rack on the stirring rod can drive the gear to rotate, the gear can stir the sewage passing through the stirring rod, the stirring rod continues to move downwards and further pushes the piston to move downwards, so that the gas in the gas cavity enters the mixing tank through the gas blowing pipe, and the gas blowing and stirring in the mixing tank are realized.

3. After mixing the sewage in the pond with the coagulant intensive mixing, can follow communicating pipe and enter into the sedimentation tank and deposit the layering in, the supernatant fluid can be followed the supernatant fluid discharge pipe and discharged at last, and the sediment of bottom then can be followed lower floor's dirt discharge pipe and discharged, unusual convenience.

In the preferable scheme , the flow guide part comprises a plate body and a flow guide pipe fixedly arranged on the plate body, and the feeding end is in a groove shape as the optimization of the basic scheme .

The structure is very simple, the cam can press the flow guide part, sewage in the collecting tank can flow into the mixing tank along the flow guide pipe, the feeding end is groove-shaped, so that when the cam presses the flow guide part, water in the collecting tank can be concentrated at the feeding end of the groove-shaped, and steps are carried out to enable the sewage to flow into the flow guide pipe quickly.

In the second preferred scheme, as the -step optimization of the , the feeding box comprises a box body, a feeding hole, a discharging hole, a poking strip and a cover plate for covering the discharging hole, the feeding hole is located at the upper part of the box body, the discharging hole is located at the lower part of the box body, a sliding cavity is arranged in the lower part of the box body, the cover plate is in sliding connection with the inner wall of the sliding cavity, a -th spring for resetting the cover plate is arranged between the cover plate and the inner wall of the sliding cavity, the poking strip is fixedly connected with the cover plate, and the poking strip is.

The structure is very simple, the cam is used for controlling the feeding box to feed coagulant into the mixing tank, the concrete principle is that coagulant is fed into the feeding box from the feeding port, the cam rotates to position and pushes the stirring strip to move towards the direction of the cover plate, the cover plate is further pushed, the cover plate is enabled to be gradually separated from the discharging port, the coagulant in the feeding box leaks out from the discharging port and falls into the mixing tank, when the cam is separated from the stirring strip, the second spring enables the stirring strip to be recovered to the original position, meanwhile, the spring enables the cover plate to be recovered to the original position, and the discharging port is covered again.

And step III of optimization, namely step of optimization to step II of optimization, the inner bottom surface of the sedimentation tank is an inclined surface inclined towards the lower-layer dirt discharge pipe, and step of optimization facilitates the sedimentation discharge at the bottom of the sedimentation tank.

And fourthly, as a step of optimization of the basic scheme or the third preferred scheme, the elastic structure is a spring, and the resetting of the flow guide part is realized very simply.

And a fifth preferred scheme is that the step is optimized for the fourth preferred scheme, the stirring rod comprises a main supporting rod and a plurality of stirring supporting rods positioned at the upper parts of the main supporting rods, and the step is carried out to fully mix the sewage and the coagulant, so that mutual collision and coagulation of colloids and dispersed particles of suspended matters are accelerated in the sedimentation process.

Drawings

FIG. 1 is a schematic view showing the construction of a sewage treatment system according to the present invention;

fig. 2 is a partially enlarged view of a in fig. 1.

Detailed Description

The invention is further illustrated in detail at by the following detailed description:

the reference numerals in the attached figures 1 and 2 of the specification comprise a collecting tank 1, a sewage collecting pipe 11, a waste residue discharging pipe 12, a mixing tank 2, an air cavity 21, a piston 22, a piston spring 23, an air blowing pipe 24, an air inlet pipe 25, a piston rod 26, a rotating cavity 261, a gear 262, a sedimentation tank 3, an upper clear liquid discharging pipe 31, a lower dirt discharging pipe 32, a communicating pipe 33, a partition wall 4, a folding telescopic layer seal 41, a flow guide part 42, a feeding end 421, a discharging end 422, a plate body 423, a flow guide pipe 424, an elastic structure 43, a supporting plate 5, a feeding box 51, a cover 511, a discharging port 512, a toggle strip 513, a cover plate 514, a spring 515, a cam 52, a main supporting rod 6, a stirring supporting rod 61 and.

as shown in figure 1, the sewage treatment system comprises a collection pool 1, a mixing pool 2 and a sedimentation pool 3, wherein a sewage collection pipe 11 with a one-way valve and a waste residue discharge pipe 12 with a one-way valve are arranged on the collection pool 1, the sewage collection pipe 11 is positioned at the bottom of the collection pool 1, so that sewage gradually enters from the bottom of the collection pool 1, and the sewage is prevented from entering from the high position of the collection pool 1 to stir the sewage, the sedimentation pool 3 is provided with a supernatant discharge pipe 31, a lower-layer dirt discharge pipe 32 and a communicating pipe 33 communicated with the mixing pool 2, one-way valves are respectively arranged on the supernatant discharge pipe 31, the lower-layer dirt discharge pipe 32 and the communicating pipe 33, the supernatant discharge pipe 31 is positioned at the upper part of the right side of the sedimentation pool 3, the lower-layer dirt discharge pipe 32 is positioned at the bottom of the sedimentation pool 3, and the inner bottom.

The collecting tank 1 and the mixing tank 2 are separated by a partition wall 4, the partition wall 4 is provided with a through hole, and the left side and the right side of the through hole are sealed by folding telescopic layers 41 (the folding telescopic layers in the scheme can be folding rubber layers, corrugated pipes or folding stainless steel sheet layers); namely, the folding telescopic layer is fixedly connected with the hole wall of the through hole. A flow guide part 42 which inclines downwards towards the collecting tank 1 is fixed on the folding telescopic layer. The flow guide part 42 includes a plate body 423 and a flow guide pipe 424 fixed to an upper surface of the plate body 423. And the guiding part 42 comprises a feeding end 421 located in the collecting tank 1 and a discharging end 422 located in the mixing tank 2, wherein the feeding end 421 is groove-shaped (specifically, the right end of the plate body 423 is inclined upward). Be equipped with the bar hole in the folding flexible layer on the pore wall of through-hole left side, the downthehole axis of rotation that is equipped with of bar, and the both ends of axis of rotation respectively with the both sides wall fixed connection of through-hole, the axis of rotation traversing plate body 423 and with plate body 423 rotate to be connected.

A cavity is also arranged in the partition wall 4, and is positioned below the through hole and communicated with the through hole. An elastic structure 43 (the elastic structure 43 in the present embodiment is a spring) for resetting the flow guide part 42 is arranged in the cavity; and the upper end of the spring is fixedly connected with the bottom surface of the plate body 423, and the lower end of the spring is fixedly connected with the bottom surface of the cavity.

The mixing tank 2 is fixedly provided with a support plate 5, the support plate 5 is provided with a feeding box 51 for containing a coagulant and a cam 52 driven by a motor, the cam 52 is used for controlling the intermittent feeding of the feeding box 51, the cam 52 is also used for controlling a flow guide part 42 to pour the sewage in the collecting tank 1 into the mixing tank 2, the feeding box 51 is positioned on the side close to a discharge end 422, three air cavities 21 are arranged inside the bottom surface of the mixing tank 2, pistons 22 are connected inside the air cavities 21 in a sliding manner, a piston spring 23 is arranged between each piston 22 and the bottom surface of each air cavity 21, air blowing pipes 24 for blowing air into the mixing tank 2 and air inlet pipes 25 for introducing air into the air cavities 21 are communicated on the air cavities 21, one-way valves are arranged on the air blowing pipes 24 and the air inlet pipes 25, pipe orifices of the air blowing pipes 24 are positioned on the left side of the air cavities 21, the communicating pipes 33 are positioned on the right side of the air cavities 21, the inner wall of the bottom surface of the mixing tank 2 is an inclined plane towards the communicating pipes 33, piston rods 22 are fixedly connected with piston rods 26, a rotating cavity 261 is arranged in the upper part of the piston rods 26, the rotating shaft is arranged on the left side wall of the rotating cavity, the rotating shaft.

The stirring rod comprises a main supporting rod 6 and a plurality of stirring supporting rods 61 positioned at the upper part of the main supporting rod 6, the number of the stirring supporting rods 61 on each main supporting rod 6 is six in the scheme, each three stirring supporting rods are groups and are fixed at two sides of the main supporting rod 6, the lower part of the main supporting rod 6 can extend into the rotating cavity 261 and push the piston 22 to move downwards, a rack 62 which can be meshed with the gear 262 is fixed on the side wall of the lower part of the main supporting rod 6, and the rack 62 is mainly used for driving the gear 262 to rotate.

As shown in FIG. 2, the feeding box 51 comprises a box body, a feeding port, a discharging port 512, a toggle bar 513 and a cover plate 514 for covering the discharging port 512, wherein a cover 511 is arranged at the feeding port, the feeding port is positioned at the upper part of the box body, the discharging port 512 is positioned at the lower part of the box body, a sliding cavity is arranged in the lower part of the box body, the cover plate 514 is in sliding connection with the inner wall of the sliding cavity, an -th spring 515 for resetting the cover plate 514 is arranged between the right side of the cover plate 514 and the right side inner wall of the sliding cavity, the toggle bar 513 is fixedly connected to the bottom surface.

When the sewage collecting device is used, sewage enters the collecting tank 1 from the sewage collecting pipe 11 to be collected, the motor is started, the motor drives the cam 52 to rotate clockwise, after the cam 52 is contacted with the toggle strip 513, the cam 52 can push the toggle strip 513 to enable the cover plate 514 to slide rightwards, the discharge hole 512 is opened, a coagulant in the tank body falls from the discharge hole 512 and enters the left side of the mixing tank 2, and after the cam 52 leaves the toggle strip 513, the -th spring 515 enables the cover plate 514 to return to the original position, and the discharge hole 512 is closed.

When the cam 52 rotates to contact with the flow guide pipe 424, the cam 52 presses the flow guide part 42 downwards to change the state that the whole flow guide part is inclined downwards towards the collecting tank 1 to the state that the whole flow guide part is inclined downwards towards the mixing tank 2, so that the sewage in the collecting tank 1 enters the mixing tank 2 through the flow guide pipe 424 to impact a coagulant which just enters the sewage tank, the cam 52 presses the flow guide pipe 424 directly, so that the main support rod 6 fixed on the flow guide pipe 424 moves downwards, so that the stirring support rod 61 on the main support rod 6 stirs the sewage, meanwhile, the lower part of the main support rod 6 gradually enters the rotating chamber 261, the rack 62 on the lower part of the main support rod 6 is meshed with the gear 262 in the rotating chamber 261 to drive the gear 262 to rotate, the gear 262 stirs the sewage flowing through the rotating chamber 261 because the of the gear 262 is semi-positioned outside the rotating chamber 261, the gear 262 continues to move downwards until the bottom surface of the rotating chamber 6 abuts against the rotating chamber 261, the piston 22 is pushed downwards, the gas in the gas chamber 24 enters the mixing chamber 24, and the sewage is stirred for adding suspended solids into the mixing tank 2 for a plurality of times, and the stirring process of adding and stirring colloid and adding and stirring colloid is accelerated by adding and stirring colloid precipitating colloid adding process (adding process).

The sewage in the mixing tank 2 is fully mixed with the coagulant, so that the colloid and the dispersed particles of the suspended matters enter the sedimentation tank 3 from the communicating pipe 33 for sedimentation and layering to form supernatant and bottom sediment after mutual collision and coagulation in the sedimentation process; finally, the supernatant in the sedimentation tank 3 is discharged from the supernatant discharge pipe 31, and the bottom sediment is discharged from the lower dirt discharge pipe 32.

The above are merely examples of the present invention, and common general knowledge of known specific structures and characteristics in the schemes is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The sewage treatment system is characterized by comprising a collecting tank, a mixing tank and a sedimentation tank, wherein a sewage collecting pipe and a waste residue discharging pipe are arranged on the collecting tank, an upper clear liquid discharging pipe, a lower dirt discharging pipe and a communicating pipe communicated with the mixing tank are arranged on the sedimentation tank, the collecting tank and the mixing tank are separated through a partition wall, a through hole is formed in the partition wall, the through hole is sealed by a folding telescopic layer, a flow guide part which inclines downwards towards the collecting tank is fixed on the folding telescopic layer, a cavity is further formed in the partition wall, the cavity is located below the through hole, an elastic structure for enabling the flow guide part to reset is arranged in the cavity, a supporting plate is fixedly arranged on the mixing tank, a feeding box used for containing a coagulant and a cam driven by a motor are arranged on the supporting plate, the cam is used for controlling intermittent feeding of the feeding box and is used for controlling the flow guide part to pour sewage in the collecting tank into the mixing tank, the flow guide part comprises a feeding end located in the collecting tank and a discharging end located in the mixing tank, a piston rod is rotatably connected with a piston rod, a blowing rod, a piston rod is rotatably connected with a piston rod, a piston rod is rotatably connected in the piston rod, a piston rod is rotatably connected in the piston rod, and a piston rod, the piston rod is rotatably connected in the piston rod and a piston rod.

2. The sewage treatment system of claim 1, wherein the flow guide part comprises a plate body and a flow guide pipe fixedly arranged on the plate body; and the feeding end is groove-shaped.

3. The sewage treatment system of claim 2, wherein the feeding box comprises a box body, a feeding hole, a discharging hole, a toggle bar and a cover plate for covering the discharging hole, the feeding hole is positioned at the upper part of the box body, the discharging hole is positioned at the lower part of the box body, a sliding cavity is arranged in the lower part of the box body, the cover plate is in sliding connection with the inner wall of the sliding cavity, an -th spring for resetting the cover plate is arranged between the cover plate and the inner wall of the sliding cavity, the toggle bar is fixedly connected with the cover plate, and the toggle bar is pushed by a cam.

4. The wastewater treatment system according to claim 3, wherein the inner bottom surface of the settling tank is a sloped surface inclined toward the lower dirt discharge pipe.

5. The wastewater treatment system of claim 1 or 4, wherein the resilient structure is a spring.

6. The wastewater treatment system of claim 5, wherein the agitator bar comprises a primary strut and a plurality of agitator struts positioned above the primary strut.