Efficient and rapid treatment device and process for wastewater of water plant

Abstract

The invention relates to the technical field of water treatment, and discloses an efficient and rapid treatment device and process for wastewater of a water plant, and the efficient and rapid treatment device comprises a box body and a water inlet pipe connected to the box body; a pretreatment bin, an inclined tube sedimentation tank and a filtering bin are sequentially arranged in the box body from left to right and are communicated with one another, and wastewater is sequentially treated from left to right; the interior of the pretreatment bin is slidably connected with a grid capable of reciprocating; wastewater enters the pretreatment bin in the box body through the water inlet pipe, large-size garbage with the diameter larger than 5 mm is removed through the grating, then PAC is added into the preliminarily filtered wastewater as a coagulant through the feeding pipe, fine particles are promoted to be gathered into large flocs through the action of the stirring assembly, the use amount of chemical agents is reduced, and the treatment efficiency is improved. The production cost is reduced, and meanwhile, the potential risk caused by excessive dependence on chemicals is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a highly efficient and rapid treatment device and process for water plant wastewater. Background Art

[0002] With the acceleration of industrialization and urbanization, natural water resources have been polluted to varying degrees, posing a huge challenge to urban water supply security. Traditional water treatment processes mainly complete wastewater treatment and recycling by precipitating wastewater and filtering the precipitated water.

[0003] High-concentration wastewater usually contains a large amount of organic matter and heavy metal ions (such as chromium, cadmium, lead, mercury, etc.). These substances are easy to form colloids or complexes, thereby increasing the viscosity and density of the wastewater. When treating this type of high-concentration wastewater, due to the presence of organic matter and heavy metals, the sedimentation rate often becomes slow. At the same time, since the high-concentration wastewater is not sufficiently pretreated in the sedimentation tank, the suspended matter in the wastewater will be difficult to settle effectively, thereby increasing the time required for sedimentation. This situation not only affects the efficiency of wastewater treatment, but also increases the subsequent treatment costs.

[0004] To this end, the present invention provides a highly efficient and rapid treatment device and process for water plant wastewater. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The present invention provides a high-efficiency and fast treatment device and process for water plant wastewater, wherein the high-efficiency and fast treatment device for water plant wastewater comprises a box body, and a water inlet pipe connected to the box body; The box body is provided with a pretreatment bin, an inclined tube sedimentation tank and a filter bin from left to right in sequence, and the pretreatment bin, the inclined tube sedimentation tank and the filter bin are interconnected to process the wastewater from left to right in sequence; A reciprocating grid is slidably connected inside the pretreatment bin, a feeding pipe for adding a coagulant is provided on the pretreatment bin, and a stirring assembly used in conjunction with the feeding pipe is also provided inside the pretreatment bin to form flocs of wastewater; The lower end of the inclined tube sedimentation tank is connected to a sewage pump, and the bottom of the inclined tube sedimentation tank is rotatably connected to a scraper that can rotate forward and backward. The inclined tube in the inclined tube sedimentation tank is made of polypropylene, which has good pressure resistance and hydrophilicity. A composite medium filter is installed inside the filter bin; the composite medium filter is filled with a variety of filter materials such as quartz sand and activated carbon, and has both adsorption and filtration functions.

[0007] Wastewater enters the pretreatment bin in the box through the water inlet pipe, and large-sized garbage with a diameter greater than 5mm is removed through the grille. Then PAC polyaluminium chloride is added as a coagulant to the preliminarily filtered wastewater through the feed pipe. The stirring component causes the fine particles to aggregate into larger flocs. After the flocs reach the inclined tube sedimentation tank with the water flow, they slowly sink to the bottom due to the density difference. The clear liquid gradually rises to the upper layer and is discharged. The sludge at the bottom of the inclined tube sedimentation tank is cleaned in time with the scraper that can rotate forward and backward, and the sludge is then pumped out by the sewage pump. The liquid entering the filter bin is finally filtered through the composite media filter until the liquid is discharged through the water outlet at the lower end of the filter bin.

[0008] Preferably, the stirring assembly includes a rotating rod, a stirring rod, a sleeve rod, a side scraper and a driving assembly; A rotating rod is rotatably connected inside the pretreatment bin, and four stirring rods are connected to the rotating rod. A sleeve rod is rotatably connected to the inner bottom end of the pretreatment bin, and two side scrapers are symmetrically connected to the outer wall of the sleeve rod. Both side scrapers are attached to the inner wall of the pretreatment bin, and the rotating rod runs through the sleeve rod.

[0009] Preferably, the drive assembly comprises a motor, a first bevel gear, a second bevel gear and a third bevel gear; A motor is installed at the bottom end of the box body, and the motor output shaft is sleeved with a first bevel gear, and the side walls of the first bevel gear are respectively meshed with a second bevel gear and a third bevel gear, the second bevel gear is installed on the side wall of the sleeve rod, and the third bevel gear is installed at the lower end of the rotating rod; through the driving component, the coagulant and wastewater in the pretreatment bin are stirred and mixed, which can significantly improve the turbulent intensity of the liquid flow in the stirring barrel. The increase in turbulent intensity is conducive to faster and more complete mixing between the coagulant and the wastewater. The forward rotation of the stirring rod and the reverse rotation of the side scraper can break the laminar state in the liquid, promote the mutual diffusion and contact of the coagulant and the tiny particles, dissolved substances, etc. in the wastewater, thereby accelerating the chemical reaction and physical coagulation process, and promoting the rapid formation of flocs.

[0010] Preferably, the inner wall of the pretreatment bin is connected to an annular plate, a plurality of sliding rods are equidistantly connected to the top end of the annular plate, the grille is slidably connected to the outer walls of the plurality of sliding rods, a bracket is installed on the inner wall of the pretreatment bin, the rotating rod portion is rotatably connected to the inside of the bracket, and a power assembly is arranged inside the bracket for driving the grille to slide back and forth on the sliding rods.

[0011] Preferably, the power assembly includes a fourth bevel gear, a fifth bevel gear, a side rod and a cam; A fourth bevel gear is connected to the rotating rod, a fifth bevel gear is meshed with the side wall of the fourth bevel gear, a side rod is connected inside the fifth bevel gear, the side rod is rotatably connected to the bracket, a cam is connected to the end of the side rod away from the rotating rod, and the outer wall of the cam is fitted to the lower end of the grille; the cam continuously squeezes the grille when rotating, so that the grille slides on the multiple sliding rods, and then the grille can move back and forth on the multiple sliding rods, thereby playing a vibrating screening role on the grille, so that impurities on the grille will not affect the flow of wastewater on the grille.

[0012] Preferably, a baffle is connected to the lower end of the annular plate, and the inner wall of the baffle is in contact with the outer walls of the two side scrapers; under the action of the baffle, the side scrapers can be supported to prevent the side scrapers from deflecting during long-term rotation.

[0013] Preferably, the top of the scraper plate is connected to a vertical pole, the upper end of the vertical pole is rotatably connected to the inside of the inclined tube sedimentation tank, the top of the vertical pole extends out of the top of the box body, the top of the vertical pole is connected to a gear, the outer wall of the gear is meshed with a rack, the rack is slidably connected to the top of the box body, the top of the rotating rod is connected to a connecting rod, the end of the connecting rod away from the rotating rod is connected to a fixed rod, a limiting groove is provided inside the rack, and the fixed rod is slidably connected inside the limiting groove, and the scraper plate connected to the vertical pole is driven by the gear to rotate forward and backward at the inner bottom of the inclined tube sedimentation tank, which can ensure that the sludge at the bottom of the inclined tube sedimentation tank will not accumulate in a certain area for a long time, and at the same time, the sludge at the bottom of the inclined tube sedimentation tank can be more effectively scraped off and sludge accumulation can be prevented, thereby improving the efficiency and effect of scraping sludge.

[0014] Preferably, a fixing plate is connected to the top of the box body, a T-shaped slide groove is provided inside the fixing plate, a T-shaped slide block is slidably connected inside the T-shaped slide groove, and the T-shaped slide block is connected to the bottom end of the rack.

[0015] Preferably, a movable rod is rotatably connected inside the filter bin, a scraper is connected to the bottom end of the movable rod, the bottom end of the scraper is attached to the surface of the composite media filter, the movable rod and the top end of the vertical rod are both connected to pulleys, and a belt is wound around the two pulleys together; under the action of the belt, the movable rod can rotate synchronously with the vertical rod, and then the movable rod drives the scraper to rotate on the surface of the composite media filter, so that the scraper scrapes off impurities attached to the surface of the composite media filter, thereby reducing blockage on the surface of the composite media filter and improving the water infiltration efficiency.

[0016] On the other hand, the present application also provides a process for a high-efficiency and fast treatment device for water plant wastewater, comprising the following steps: S1: Wastewater enters the pretreatment chamber inside the box through the water inlet pipe, and the wastewater first passes through the reciprocating grid to intercept large particles in the water; S2: PAC is used as a coagulant to be charged into the pretreatment tank through the feed pipe, and the water body is stirred with the stirring component, and its strong charge neutralization effect is used to cause the fine particles to aggregate into larger flocs; S3: After the flocs arrive at the inclined tube sedimentation tank with the water flow, they slowly sink to the bottom due to the density difference. The clear liquid gradually rises to the upper layer and is discharged into the filter bin. By observing the water surface state of the inclined tube sedimentation tank, the sludge at the bottom of the inclined tube sedimentation tank is cleaned in time with the scraper blade that can rotate forward and backward, and then the sludge is pumped out by the sewage pump; S4: The liquid entering the filter chamber is finally filtered through the composite media filter. The movable rod is driven by a belt to rotate synchronously with the vertical rod, thereby scraping off the impurities attached to the surface of the composite media filter to avoid blockage and maintain a good water permeability until the liquid is discharged from the water outlet at the lower end of the filter chamber.

[0017] The beneficial effects of the present invention are as follows: the highly efficient and rapid treatment device and process for water plant wastewater of the present invention are 1. Wastewater enters the pretreatment bin in the box through the water inlet pipe, and large-sized garbage with a diameter greater than 5mm is removed through the grille. Then PAC is added as a coagulant to the preliminarily filtered wastewater through the feed pipe. The stirring component causes fine particles to aggregate into larger flocs, reducing the use of chemical agents, reducing production costs, and avoiding the potential risks caused by over-reliance on chemicals; 2. After the flocs reach the inclined tube sedimentation tank with the water flow, they slowly sink to the bottom due to the density difference, and the clear liquid gradually rises to the upper layer and is discharged. The scraper that can rotate forward and backward is used to clean the accumulated mud at the bottom of the inclined tube sedimentation tank in time, and then the accumulated mud is pumped out by the sewage pump. The liquid entering the filter bin is finally filtered through the composite media filter until the liquid is discharged from the water outlet at the lower end of the filter bin. Through the integrated design, various treatment units are organically combined to achieve a graded filtration effect from coarse to fine. The overall equipment has greatly improved the processing speed and efficiency, and the single processing cycle has been shortened to less than 30 minutes, and the amount of water treated per unit time has increased by about 20%. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a stereogram of an embodiment of the present invention; Figure 2 It is a partial schematic diagram of the three-dimensional structural section of the box body of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the stirring assembly of the present invention; Figure 4 is a schematic diagram of the three-dimensional structure of the grille of the present invention; Figure 5 The present invention Figure 4 A partial schematic diagram of a three-dimensional structural cross section; Figure 6 It is a three-dimensional structural schematic diagram of the gear and rack of the present invention; Figure 7 It is a partial schematic diagram of the three-dimensional structural section of the rack, the limiting groove and the fixing plate of the present invention.

[0019] Description of reference numerals: 1. Box body; 2. Pretreatment chamber; 21. grille; 211. annular plate; 212. slide bar; 213. bracket; 214, power assembly; 2141, fourth bevel gear; 2142, fifth bevel gear; 2143, side rod; 2144, cam; 215, baffle; 22. Feed pipe; 23. Stirring assembly; 231. Rotating rod; 232. Stirring rod; 233. Sleeve rod; 234. Side scraper; 235, driving assembly; 2351, motor; 2352, first bevel gear; 2353, second bevel gear; 2354, third bevel gear; 3. Inclined tube sedimentation tank; 31, scraper; 311, vertical pole; 312, gear; 313, rack; 314, connecting rod; 315, fixed rod; 316, limit groove; 317, fixed plate; 4. Filter chamber; 41. Composite medium filter; 42. Movable rod; 43. Scraper; 44. Belt. DETAILED DESCRIPTION

[0020] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0021] Example like Figures 1 to 7 As shown, the highly efficient and rapid treatment device and process of water plant wastewater described in the embodiment of the present invention, please refer to Figure 1 , Figure 2 , wherein, a high-efficiency and rapid treatment device for wastewater from a water plant comprises a box body 1, and a water inlet pipe connected to the box body 1; The box 1 is provided with a pretreatment chamber 2, an inclined tube sedimentation tank 3 and a filter chamber 4 from left to right. The pretreatment chamber 2, the inclined tube sedimentation tank 3 and the filter chamber 4 are interconnected to process the wastewater from left to right. A reciprocating grid 21 is slidably connected inside the pretreatment bin 2, a feeding pipe 22 for adding a coagulant is provided on the pretreatment bin 2, and a stirring assembly 23 used in conjunction with the feeding pipe 22 is also provided inside the pretreatment bin 2 to form the wastewater into flocs; The lower end of the inclined tube sedimentation tank 3 is connected to a sewage pump, and the bottom of the inclined tube sedimentation tank 3 is rotatably connected to a scraper 31 that can rotate forward and backward. The inclined tube in the inclined tube sedimentation tank 3 is made of polypropylene, which has good pressure resistance and hydrophilicity. A composite medium filter 41 is installed inside the filter chamber 4; the composite medium filter 41 is filled with a variety of filter materials such as quartz sand and activated carbon, and has dual functions of adsorption and filtration.

[0022] Specifically, wastewater enters the pretreatment bin 2 in the housing 1 through the water inlet pipe, large-sized garbage with a diameter greater than 5 mm is removed through the grille 21, and then PAC polyaluminium chloride is added as a coagulant to the preliminarily filtered wastewater through the feed pipe 22. The stirring component 23 causes the fine particles to aggregate into larger flocs. After the flocs reach the inclined tube sedimentation tank 3 with the water flow, they slowly sink to the bottom due to the density difference, and the clear liquid gradually rises to the upper layer for discharge. The sludge at the bottom of the inclined tube sedimentation tank 3 is cleaned in time with the scraper 31 that can rotate forwards and backwards, and then the sludge is pumped out by the sewage pump. The liquid entering the filter bin 4 is finally filtered through the composite media filter 41 until the liquid is discharged along the water outlet at the lower end of the filter bin 4.

[0023] Please refer to Figure 2 , Figure 3 The stirring assembly 23 includes a rotating rod 231, a stirring rod 232, a sleeve rod 233, a side scraper 234 and a driving assembly 235; A rotating rod 231 is rotatably connected inside the pretreatment bin 2, and four stirring rods 232 are connected to the rotating rod 231. A sleeve rod 233 is rotatably connected to the inner bottom end of the pretreatment bin 2. Two side scrapers 234 are symmetrically connected to the outer wall of the sleeve rod 233. The two side scrapers 234 are both attached to the inner wall of the pretreatment bin 2, and the rotating rod 231 passes through the sleeve rod 233.

[0024] Please refer to Figure 3 , the driving assembly 235 includes a motor 2351, a first bevel gear 2352, a second bevel gear 2353 and a third bevel gear 2354; A motor 2351 is installed at the bottom end of the box body 1, and the output shaft of the motor 2351 is sleeved with a first bevel gear 2352. The side walls of the first bevel gear 2352 are respectively meshed with a second bevel gear 2353 and a third bevel gear 2354. The second bevel gear 2353 is installed on the side wall of the sleeve rod 233, and the third bevel gear 2354 is installed at the lower end of the rotating rod 231.

[0025] Specifically, the first bevel gear 2352 is driven by a motor to rotate, so that the first bevel gear 2352 drives the second bevel gear 2353 and the third bevel gear 2354 to rotate synchronously, and then the second bevel gear 2353 and the third bevel gear 2354 rotate in opposite directions, so that the second bevel gear 2353 drives the stirring rod 232 connected to the rotating rod 231 to rotate forward in the pretreatment bin 2, and the third bevel gear 2354 drives the side scraper 234 connected to the sleeve rod 233 to rotate reversely in the pretreatment bin 2, so that the coagulant and wastewater in the pretreatment bin 2 are stirred and mixed, which can significantly improve the turbulent intensity of the liquid flow in the mixing barrel. The increase in turbulent intensity is conducive to faster and more complete mixing between the coagulant and the wastewater. The forward rotation of the stirring rod 232 and the reverse rotation of the side scraper 234 can break the laminar state in the liquid, promote the mutual diffusion and contact of the coagulant and the tiny particles, dissolved substances, etc. in the wastewater, thereby accelerating the chemical reaction and physical coagulation process, and promoting the rapid formation of flocs.

[0026] Please refer to Figure 2 , Figure 4 , Figure 5 The inner wall of the pretreatment chamber 2 is connected to an annular plate 211, and a plurality of sliding rods 212 are equidistantly connected to the top of the annular plate 211. The grille 21 is slidably connected to the outer wall of the plurality of sliding rods 212. A bracket 213 is installed on the inner wall of the pretreatment chamber 2. The rotating rod 231 is rotatably connected to the inside of the bracket 213. A power assembly 214 is arranged inside the bracket 213 for driving the grille 21 to slide back and forth on the sliding rods 212.

[0027] Please refer to Figure 2 , Figure 4 , Figure 5 , the power assembly 214 includes a fourth bevel gear 2141, a fifth bevel gear 2142, a side rod 2143 and a cam 2144; A fourth bevel gear 2141 is connected to the rotating rod 231, a fifth bevel gear 2142 is meshed on the side wall of the fourth bevel gear 2141, a side rod 2143 is connected inside the fifth bevel gear 2142, the side rod 2143 is rotatably connected to the bracket 213, a cam 2144 is connected to one end of the side rod 2143 away from the rotating rod 231, and an outer wall of the cam 2144 is attached to the lower end of the grille 21.

[0028] Specifically, by rotating the rotating rod 231, the rotating rod 231 drives the fourth bevel gear 2141 to rotate, and the fourth bevel gear 2141 drives the meshing fifth bevel gear 2142 to rotate synchronously, and the fifth bevel gear 2142 drives the cam 2144 on the side rod 2143 to rotate, so that the cam 2144 continuously squeezes the grille 21 while rotating, and the grille 21 slides on the multiple slide bars 212, so that the grille 21 can reciprocate on the multiple slide bars 212, thereby playing a vibrating screen role on the grille 21, so that impurities on the grille 21 will not affect the flow of wastewater on the grille 21.

[0029] Please refer to Figure 2 , Figure 5 The lower end of the annular plate 211 is connected to a baffle 215 , and the inner wall of the baffle 215 is in contact with the outer walls of the two side scrapers 234 .

[0030] Specifically, when the side scraper 234 rotates in the pretreatment chamber 2, the top of the side scraper 234 will fit against the inner wall of the baffle 215. Under the action of the baffle 215, the side scraper 234 can be supported to prevent the side scraper 234 from deflecting due to long-term rotation.

[0031] Please refer to Figure 2 , Figure 6 The top of the scraper blade 31 is connected to a vertical rod 311, the upper end of the vertical rod 311 is rotatably connected to the inside of the inclined tube sedimentation tank 3, the top of the vertical rod 311 extends out of the top of the box body 1, the top of the vertical rod 311 is connected to a gear 312, the outer wall of the gear 312 is meshed with a rack 313, the rack 313 is slidably connected to the top of the box body 1, the top of the rotating rod 231 is connected to a connecting rod 314, the end of the connecting rod 314 away from the rotating rod 231 is connected to a fixing rod 315, a limiting groove 316 is provided inside the rack 313, and the fixing rod 315 is slidably connected inside the limiting groove 316.

[0032] Please refer to Figure 6 , Figure 7 The top of the box body 1 is connected with a fixed plate 317 , a T-shaped slide groove is provided inside the fixed plate 317 , a T-shaped slider is slidably connected inside the T-shaped slide groove, and the T-shaped slider is connected to the bottom end of the rack 313 .

[0033] Specifically, by rotating the rotating rod 231, the connecting rod 314 and the fixed rod 315 at the top of the connecting rod 314 are driven to rotate synchronously, so that the fixed rod 315 slides inside the limiting groove 316, so that the fixed rod 315 drives the rack 313 to move on the fixing plate 317, and the rack 313 drives the T-shaped sliding block at its bottom end to slide in the T-shaped sliding groove inside the fixing plate 317, so that the rack 313 moves back and forth on the fixing plate 317, and when the rack 313 moves forward, it drives the gear 312 to rotate forward, and when the rack 313 moves backward, it drives the gear 312 to reverse, so that the gear 312 drives the scraper plate 31 connected to the vertical rod 311 to rotate forward and reverse at the inner bottom of the inclined tube sedimentation tank 3, which can ensure that the sludge at the bottom of the inclined tube sedimentation tank 3 will not accumulate in a certain area for a long time, and at the same time, the sludge at the bottom of the inclined tube sedimentation tank 3 can be scraped more effectively to prevent sludge accumulation, thereby improving the efficiency and effect of scraping sludge.

[0034] Please refer to Figure 2 , Figure 6 A movable rod 42 is rotatably connected inside the filter bin 4, a scraper 43 is connected to the bottom end of the movable rod 42, the bottom end of the scraper 43 is attached to the surface of the composite media filter 41, and pulleys are connected to the top of the movable rod 42 and the vertical rod 311, and a belt 44 is wound around the two pulleys.

[0035] Specifically, under the action of the belt 44, the movable rod 42 can rotate synchronously with the vertical rod 311, and then the movable rod 42 drives the scraper 43 to rotate on the surface of the composite media filter 41, so that the scraper 43 scrapes off the impurities attached to the surface of the composite media filter 41, thereby reducing the blockage of the surface of the composite media filter 41 and improving the water infiltration efficiency.

[0036] On the other hand, the embodiment of the present application also provides a process of a high-efficiency and fast treatment device for water plant wastewater according to the above, comprising the following steps: S1: wastewater enters the pretreatment chamber 2 inside the box 1 through the water inlet pipe, and the wastewater first passes through the reciprocating grid 21 to intercept large-size debris in the water; S2: PAC is used as a coagulant and is charged into the pretreatment chamber 2 through the feed pipe 22, and the water body is stirred with the stirring component 23, so that the strong charge neutralization effect of PAC is used to cause the fine particles to aggregate into larger flocs; S3: After the flocs arrive at the inclined tube sedimentation tank 3 with the water flow, they slowly sink to the bottom due to the density difference, and the clear liquid gradually rises to the upper layer and is discharged into the filter bin 4. By observing the water surface state of the inclined tube sedimentation tank 3, the mud at the bottom of the inclined tube sedimentation tank 3 is cleaned in time with the scraper 31 that can rotate forward and backward, and then the mud is pumped out by the sewage pump; S4: The liquid entering the filter chamber 4 is finally filtered through the composite media filter 41, and the movable rod 42 is driven by the belt 44 to rotate synchronously with the vertical rod 311, so as to scrape off the impurities attached to the surface of the composite media filter 41, thereby avoiding blockage and maintaining a good water permeability until the liquid is discharged from the water outlet at the lower end of the filter chamber 4.

[0037] Working principle: wastewater enters the pretreatment chamber 2 in the box 1 through the water inlet pipe, and large-sized garbage with a diameter greater than 5mm is removed through the grille 21. Then PAC (polyaluminium chloride) is added as a coagulant to the preliminarily filtered wastewater through the feed pipe 22. The amount of PAC added is usually 5-50 mg per liter of wastewater, depending on the water quality; The first bevel gear 2352 is driven by a motor to rotate, so that the first bevel gear 2352 drives the second bevel gear 2353 and the third bevel gear 2354 to rotate synchronously, thereby making the second bevel gear 2353 and the third bevel gear 2354 rotate in opposite directions, so that the second bevel gear 2353 drives the stirring rod 232 connected to the rotating rod 231 to rotate forward in the pretreatment bin 2, and the third bevel gear 2354 drives the side scraper 234 connected to the sleeve rod 233 to rotate reversely in the pretreatment bin 2, so that the coagulant and the wastewater in the pretreatment bin 2 are stirred and mixed, which can significantly improve the turbulence intensity of the liquid flow in the stirring barrel. The increase in turbulence intensity is conducive to faster and more complete mixing between the coagulant and the wastewater. The forward rotation of the stirring rod and the reverse rotation of the side scraper can break the laminar state in the liquid, promote the mutual diffusion and contact of the coagulant and the tiny particles, dissolved substances, etc. in the wastewater, thereby accelerating the chemical reaction and physical coagulation process, and promoting the rapid generation of flocs. The rotating rod 231 rotates to drive the fourth bevel gear 2141 to rotate, and the fourth bevel gear 2141 drives the meshed fifth bevel gear 2142 to rotate synchronously, so that the fifth bevel gear 2142 drives the cam 2144 on the side rod 2143 to rotate, so that the cam 2144 continuously squeezes the grille 21 during rotation, so that the grille 21 slides on the plurality of slide bars 212, and then the grille 21 can reciprocate on the plurality of slide bars 212, so that the grille 21 can be vibrated and screened, so that the impurities on the grille 21 will not affect the flow of wastewater on the grille; After the flocs arrive at the inclined tube sedimentation tank 3 with the water flow, they slowly sink to the bottom due to the density difference, and the clear liquid gradually rises to the upper layer and is discharged; The rotating rod 231 rotates to drive the connecting rod 314 and the fixed rod 315 at the top of the connecting rod 314 to rotate synchronously, so that the fixed rod 315 slides in the limiting groove 316, so that the fixed rod 315 drives the rack 313 to move on the fixing plate 317, and the rack 313 drives the T-shaped sliding block at its bottom end to slide in the T-shaped sliding groove inside the fixing plate 317, so that the rack 313 moves back and forth on the fixing plate 317, and when the rack 313 moves forward, it drives the gear 312 to rotate forward, and when the rack 313 moves backward, it drives the gear 312 to reverse, so that the gear 312 drives the scraper plate 31 connected to the vertical rod 311 to rotate forward and backward at the inner bottom of the inclined tube sedimentation tank 3, which can ensure that the sludge at the bottom of the inclined tube sedimentation tank 3 will not accumulate in a certain area for a long time, and at the same time, the sludge at the bottom of the inclined tube sedimentation tank 3 can be scraped more effectively to prevent sludge accumulation, thereby improving the efficiency and effect of scraping sludge, and then the accumulated sludge can be pumped out by the sewage pump; Under the action of the belt 44, the movable rod 42 can be rotated synchronously with the vertical rod 311, and then the movable rod 42 drives the scraper 43 to rotate on the surface of the composite media filter 41, so that the scraper 43 scrapes off the impurities attached to the surface of the composite media filter 41, thereby reducing the blockage of the surface of the composite media filter 41 and improving the water infiltration efficiency; until the liquid is discharged along the water outlet at the lower end of the filter chamber 4; Among them, through the integrated design, a variety of treatment units are organically combined to achieve a graded filtration effect from coarse to fine. The overall equipment has greatly improved the processing speed and efficiency. The single treatment cycle is shortened to less than 30 minutes, and the water volume treated per unit time is increased by more than 20%. The specific data are as follows:

[0038] Key conclusions: Processing cycle: reduced from 40 minutes to 30 minutes, a reduction of about 10 minutes; Water volume processed per unit time: increased from 25 L / min to 33 / min, an increase of about 33%, reaching 20% ​​of the target requirement.

[0039] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A highly efficient and rapid treatment device for wastewater from a water plant, comprising a housing (1) and a water inlet pipe connected to the housing (1); characterized in that: The box body (1) is provided with a pretreatment chamber (2), an inclined tube sedimentation tank (3) and a filtration chamber (4) from left to right in sequence, and the pretreatment chamber (2), the inclined tube sedimentation tank (3) and the filtration chamber (4) are interconnected, so that wastewater is treated in sequence from left to right; A reciprocating grid (21) is slidably connected to the interior of the pretreatment bin (2), a feed pipe (22) for adding a coagulant is provided on the pretreatment bin (2), and a stirring assembly (23) used in conjunction with the feed pipe (22) is also provided inside the pretreatment bin (2) for forming the wastewater into flocs; The lower end of the inclined tube sedimentation tank (3) is externally connected to a sewage pump at the discharge port, and the bottom of the inclined tube sedimentation tank (3) is rotatably connected to a scraper blade (31) that can rotate forward and backward; A composite medium filter (41) is installed inside the filter bin (4).

2. The high-efficiency and rapid treatment device for water plant wastewater according to claim 1 is characterized by: The stirring assembly (23) comprises a rotating rod (231), a stirring rod (232), a sleeve rod (233), a side scraper (234) and a driving assembly (235); A rotating rod (231) is rotatably connected inside the pretreatment bin (2), and four stirring rods (232) are connected to the rotating rod (231). A sleeve rod (233) is rotatably connected to the inner bottom end of the pretreatment bin (2), and two side scrapers (234) are symmetrically connected to the outer wall of the sleeve rod (233). Both side scrapers (234) are attached to the inner wall of the pretreatment bin (2), and the rotating rod (231) passes through the interior of the sleeve rod (233).

3. The high-efficiency and rapid treatment device for water plant wastewater according to claim 2 is characterized in that: The driving assembly (235) comprises a motor (2351), a first bevel gear (2352), a second bevel gear (2353) and a third bevel gear (2354); A motor (2351) is installed at the bottom end of the box body (1); a first bevel gear (2352) is sleeved on an output shaft of the motor (2351); a second bevel gear (2353) and a third bevel gear (2354) are respectively meshed on the side walls of the first bevel gear (2352); the second bevel gear (2353) is installed on the side wall of the sleeve rod (233); and the third bevel gear (2354) is installed on the lower end of the rotating rod (231).

4. The high-efficiency and rapid treatment device for water plant wastewater according to claim 2 is characterized by: The inner wall of the pretreatment chamber (2) is connected to an annular plate (211), a plurality of sliding rods (212) are equidistantly connected to the top end of the annular plate (211), the grille (21) is slidably connected to the outer walls of the plurality of sliding rods (212), a bracket (213) is installed on the inner wall of the pretreatment chamber (2), a rod portion of the rotating rod (231) is rotatably connected to the inside of the bracket (213), and a power assembly (214) is arranged inside the bracket (213) for driving the grille (21) to slide back and forth on the sliding rods (212).

5. The high-efficiency and rapid treatment device for water plant wastewater according to claim 4 is characterized by: The power assembly (214) comprises a fourth bevel gear (2141), a fifth bevel gear (2142), a side rod (2143) and a cam (2144); The rotating rod (231) is connected to a fourth bevel gear (2141), a fifth bevel gear (2142) is meshed on a side wall of the fourth bevel gear (2141), a side rod (2143) is connected inside the fifth bevel gear (2142), the side rod (2143) is rotatably connected to the bracket (213), one end of the side rod (2143) away from the rotating rod (231) is connected to a cam (2144), and an outer wall of the cam (2144) is attached to the lower end of the grille (21).

6. The high-efficiency and rapid treatment device for water plant wastewater according to claim 4 is characterized by: The lower end of the annular plate (211) is connected to a baffle (215), and the inner wall of the baffle (215) is attached to the outer walls of the two side scrapers (234).

7. The high-efficiency and rapid treatment device for water plant wastewater according to claim 2 is characterized by: The top end of the scraper blade (31) is connected to a vertical rod (311), the upper end of the vertical rod (311) is rotatably connected to the inside of the inclined tube sedimentation tank (3), the top end of the vertical rod (311) extends out of the top end of the box body (1), the top end of the vertical rod (311) is connected to a gear (312), the outer wall of the gear (312) is meshed with a rack (313), the rack (313) is slidably connected to the top end of the box body (1), the top end of the rotating rod (231) is connected to a connecting rod (314), the end of the connecting rod (314) away from the rotating rod (231) is connected to a fixing rod (315), a limiting groove (316) is provided inside the rack (313), and the fixing rod (315) is slidably connected inside the limiting groove (316).

8. The high-efficiency and rapid treatment device for water plant wastewater according to claim 7 is characterized by: The top end of the box body (1) is connected to a fixed plate (317), a T-shaped slide groove is provided inside the fixed plate (317), a T-shaped slide block is slidably connected inside the T-shaped slide groove, and the T-shaped slide block is connected to the bottom end of the rack (313).

9. The high-efficiency and rapid treatment device for water plant wastewater according to claim 7, characterized in that: A movable rod (42) is rotatably connected inside the filter bin (4), a scraper (43) is connected to the bottom end of the movable rod (42), the bottom end of the scraper (43) is attached to the surface of the composite medium filter (41), and the movable rod (42) and the top end of the vertical rod (311) are both connected to pulleys, and a belt (44) is wound around the two pulleys.

10. A process for a high-efficiency and fast treatment device for waterworks wastewater, using a high-efficiency and fast treatment device for waterworks wastewater according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: wastewater enters the pretreatment chamber (2) inside the box (1) through the water inlet pipe, and the wastewater first passes through the reciprocating grid (21) to intercept large-sized impurities in the water; S2: PAC is charged into the pretreatment chamber (2) through the feed pipe (22) as a coagulant, and the water body is stirred with the stirring component (23), so that the strong charge neutralization effect of PAC is used to cause the fine particles to aggregate into larger flocs; S3: After the flocs arrive at the inclined tube sedimentation tank (3) with the water flow, they slowly sink to the bottom due to the density difference, and the clear liquid gradually rises to the upper layer and is discharged into the filter chamber (4). By observing the water surface state of the inclined tube sedimentation tank (3), the mud at the bottom of the inclined tube sedimentation tank (3) is cleaned in time with the scraper (31) that can rotate forward and backward, and then the mud is pumped out by the sewage pump; S4: The liquid entering the filter chamber (4) is finally filtered through the composite media filter (41). The movable rod (42) is driven by the belt (44) to rotate synchronously with the vertical rod (311), thereby scraping off impurities attached to the surface of the composite media filter (41), thereby avoiding clogging and maintaining a good water permeability until the liquid is discharged through the water outlet at the lower end of the filter chamber (4).

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