CN113371876A - Multistage purification treatment process for industrial wastewater - Google Patents
Multistage purification treatment process for industrial wastewater Download PDFInfo
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- CN113371876A CN113371876A CN202110646509.3A CN202110646509A CN113371876A CN 113371876 A CN113371876 A CN 113371876A CN 202110646509 A CN202110646509 A CN 202110646509A CN 113371876 A CN113371876 A CN 113371876A
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The invention relates to a multistage purification treatment process of industrial wastewater, in particular to an industrial wastewater purification treatment system, which comprises a purification tank, a flocculation stirring mechanism and a swing air floatation device, wherein the purification tank is provided with a water inlet and a water outlet; the system can complete flocculation purification, air flotation separation and scum cleaning in sequence in a flocculation area, an air flotation area and a separation area in the industrial wastewater treatment process, thereby realizing the multi-stage purification treatment of the industrial wastewater, and specially carrying out improved design aiming at the traditional air flotation equipment, and solving the problems that the combination rate of impurities in different areas and wastewater is different due to uneven bubble dispersion in the traditional air flotation method for carrying out the industrial wastewater treatment process, thereby influencing the final air flotation separation efficiency and the purification treatment effect; meanwhile, the problem that floating rate of floating slag after air flotation separation is greatly reduced due to the fact that air holes are easy to block is solved, and the purifying effect is greatly reduced.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, and particularly provides a multistage purification treatment process for industrial wastewater.
Background
Industrial wastewater refers to wastewater generated in an industrial production process as the name implies, in the industrial production process, part of wastewater containing industrial production components with high concentration is concentrated and recycled, and the other part of wastewater with low concentration and toxic and harmful substances with content lower than the standard is purified and then discharged; because the components of industrial wastewater are complex and the treatment difficulty is large, the industrial wastewater is often treated by adopting a multi-stage purification treatment mode, and the treatment methods comprise an air floatation method, a coagulation method, an ion exchange method, an adsorption method and the like.
The air floatation method is an efficient treatment method for separating impurities such as suspended matters and the like in wastewater by adopting generated micro-bubbles; the traditional aeration structure adopting the air floatation equipment is basically a static fixed structure, and has the following disadvantages in the actual purification treatment process:
1) because the ventilating structure is a fixed structure, the air bubbles discharged from the air holes are unevenly dispersed in the whole wastewater area, and the combination rate of the air bubbles and impurities in the wastewater is different in different areas due to the difference of the distribution of the air bubbles, so that the final air flotation separation efficiency and the purification treatment effect are influenced;
2) because the ventilation structure is a static structure, the blockage is easily generated at the air hole in the long-time wastewater purification treatment process, so that the whole air floatation equipment cannot work normally, the floating rate of the floating slag after air floatation separation is greatly reduced, and the purification effect is greatly reduced.
Based on the problems, the invention provides a multistage purification treatment process for industrial wastewater, and particularly relates to an industrial wastewater purification treatment system.
Disclosure of Invention
In order to solve the above problems, the present invention provides a multi-stage purification treatment process for industrial wastewater, which is used to solve the above problems in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: the multistage purification treatment process for industrial wastewater specifically comprises the following steps:
s1, removing precipitable impurities from the wastewater generated in the industrial production through standing and precipitation;
s2, introducing the wastewater subjected to the sedimentation treatment in the step S1 into a flocculation area of an industrial wastewater purification treatment system, adding a flocculating agent and a coagulant aid into the flocculation area, and stirring the wastewater by a flocculation stirring mechanism to form a flocculation effect;
s3, introducing the wastewater subjected to flocculation treatment in the step S2 into an air flotation area of an industrial wastewater purification treatment system, and performing air flotation separation on the wastewater in the air flotation area through a swing air flotation device to realize scum separation;
s4, the wastewater after the air flotation separation treatment is finished in the step S3 enters a separation area of an industrial wastewater purification treatment system, scum suspended on the water surface is discharged and cleaned, and the purified wastewater is discharged;
the process of carrying out multistage purification treatment on the industrial wastewater by adopting the multistage purification treatment process of the industrial wastewater of the steps S1-S4 also specifically relates to the industrial wastewater purification treatment system, which comprises a purification tank, a flocculation stirring mechanism and a swing air floatation device; wherein:
the purification tank is cube-shaped, a first partition board and a second partition board are arranged in the purification tank in parallel, and three areas formed by the first partition board and the second partition board in a separating mode are a flocculation area located on one side of the first partition board, an air flotation area located between the first partition board and the second partition board and a separation area located on one side of the second partition board in sequence; two outer side walls at the opposite positions of the purification tank are respectively provided with a control elbow pipe for communicating the flocculation area and the air flotation area; the flocculation area is provided with two flocculation stirring mechanisms, and the air floatation area is provided with the swing air floatation device;
the swing air flotation device comprises a swing driving mechanism arranged at the top of the purifying tank and a vent pipe group driven by the swing driving mechanism to swing in a reciprocating manner, and the vent pipe group is positioned in the air flotation area and used for introducing compressed air to form bubbles; the swing driving mechanism comprises two swing shafts for swing action output, and the two swing shafts are coaxially arranged in a mirror symmetry mode and horizontally and rotatably arranged on two side walls of the purification tank at the air floatation area; the vent pipe group is detachably assembled between the two swinging shafts.
Preferably, the vent pipe group comprises a horizontally arranged main beam pipe, clamping joints which are arranged in a mirror symmetry mode and fixedly installed at two ends of the main beam pipe, horizontally arranged auxiliary beam pipes, a plurality of bridging pipes and two rows of vent branch pipes; the two clamping joints are correspondingly and detachably assembled on the two swing shafts one by one, the auxiliary beam pipe is positioned below the main beam pipe and is arranged in parallel with the main beam pipe, and the plurality of bridging pipes are linearly and uniformly distributed along the axial direction of the main beam pipe and are communicated between the main beam pipe and the auxiliary beam pipe; the two rows of the branch ventilation pipes are oppositely arranged on the auxiliary beam pipe, and each row of the branch ventilation pipes consists of a plurality of branch ventilation pipes which are communicated with the auxiliary beam pipe and are uniformly distributed along the axial direction; the main beam pipe is provided with an air inlet, and the whole pipe wall of the air branch pipe is uniformly distributed with air holes.
Preferably, the flocculation stirring mechanism comprises a stirring paddle for rotating and stirring, the stirring paddle is positioned in the flocculation area, the stirring paddle comprises a main shaft which is of a hollow structure, the bottom end of the main shaft is closed, wastewater can be introduced into the main shaft, the main shaft is vertically arranged, two groups of liquid discharge pipes and two groups of blades are alternately distributed on the main shaft along the axial direction, each group of liquid discharge pipes comprises a plurality of liquid discharge pipes uniformly distributed on the circumference, and the liquid discharge pipes are vertically communicated with the main shaft; each group of blades consists of a plurality of blades which are uniformly distributed on the circumference and fixedly connected on the main shaft.
Preferably, a clamping groove block comprising a U-shaped clamping groove is arranged at one end of the oscillating shaft, which is positioned in the air floatation area, and a pin hole is formed in the U-shaped clamping groove; the clamping joint comprises a fixed sleeve which is sleeved and fixed at the end part of the main beam pipe, a clamping part which is fixedly connected with the fixed sleeve, a fixed pin and a tension spring; joint portion be cylindricly and with U type draw-in groove joint cooperation, the fixed pin is followed joint portion diameter direction runs through the slip setting, the fixed pin can be inserted in the pinhole, the extension spring cover is established on the fixed pin and both ends are connected joint portion outer wall with between the fixed pin middle part.
Preferably, the swing driving mechanism further comprises a guide vertical plate fixed at the top end of the first partition plate, a swing driving motor fixedly mounted on the guide vertical plate through a motor fixing seat, a crank disc horizontally arranged and connected to an output shaft of the swing driving motor, a connecting rod, a stroke plate and a rack; the stroke plate is located above the air flotation area, a plurality of guide rods which are horizontally arranged with the guide vertical plate in a sliding mode are connected onto the stroke plate, two ends of each connecting rod are hinged between the crank disc and the corresponding stroke plate, two racks which are arranged in one-to-one correspondence with the two oscillating shafts are horizontally arranged on the stroke plate, and gears meshed with the racks are arranged at one ends, located on the outer sides of the air flotation area, of the oscillating shafts.
Preferably, the flocculation stirring mechanism further comprises a transverse plate horizontally fixed at the top end of the flocculation area and a stirring motor assembled at the top end of the transverse plate through a motor fixing frame; be provided with drive gear on agitator motor's the output shaft, the vertical rotation of main shaft is installed on the diaphragm, be provided with on the main shaft with drive gear meshed's driven ring gear, the main shaft top is provided with the opening that is used for letting in waste water.
Preferably, the front end of the liquid discharge pipe is provided with a plurality of liquid discharge holes.
Preferably, a butterfly valve for controlling the circulation of the waste water is arranged on the control elbow.
Preferably, the top end of the second clapboard is provided with a guide inclined plate, and the inclined plane of the guide inclined plate inclines from the air flotation area to the separation area.
Preferably, the purge tank is provided with a discharge port on an outer side wall of the separation zone.
The technical scheme has the following advantages or beneficial effects:
1. the invention provides a multistage purification treatment process for industrial wastewater, in particular to an industrial wastewater purification treatment system, which can complete flocculation purification, air flotation separation and scum cleaning in a flocculation area, an air flotation area and a separation area in the industrial wastewater treatment process in sequence, thereby realizing multistage purification treatment for the industrial wastewater, and is specially designed aiming at the improvement of the traditional air flotation equipment, thereby solving the problems that the combination rate of impurities in different areas and wastewater is different due to uneven bubble dispersion in the traditional industrial wastewater treatment process by adopting an air flotation method, thereby influencing the final air flotation separation efficiency and purification treatment effect; meanwhile, the problem that floating rate of floating slag after air flotation separation is greatly reduced due to the fact that air holes are easy to block is solved, and the purifying effect is greatly reduced.
2. The invention provides a multistage purification treatment process for industrial wastewater, and particularly relates to an industrial wastewater purification treatment system.
3. The invention provides a multistage purification treatment process for industrial wastewater, and particularly relates to an industrial wastewater purification treatment system.A swing air floatation device adopts a reciprocating swing design to replace a traditional static fixed air floatation ventilation structure, so that the dispersion uniformity and randomness of introduced bubbles in the whole area are greatly improved, the combination rate of the bubbles and wastewater impurities in the whole air floatation area is greatly improved, the air floatation separation efficiency is improved, and the purification treatment effect is enhanced; in addition, the swinging arrangement can effectively avoid the accumulation and blockage of impurities at the air holes, thereby ensuring the normal working effect and maintaining the purification effect.
4. The invention provides a multistage purification treatment process for industrial wastewater, and particularly relates to an industrial wastewater purification treatment system.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a flow chart of a method of a multistage purification treatment process for industrial wastewater provided by the invention;
FIG. 2 is a schematic perspective view of an industrial wastewater purification system according to the present invention from a first perspective;
FIG. 3 is a schematic perspective view of an industrial wastewater purification system according to the present invention from a second perspective;
FIG. 4 is a schematic perspective view of an industrial wastewater purification system provided by the present invention from a third perspective;
FIG. 5 is a top view of an industrial wastewater purification treatment system provided by the present invention;
FIG. 6 is a schematic perspective view of a flocculation stirring mechanism;
FIG. 7 is a perspective view of the vent tube set assembled with two swing axes;
fig. 8 is a partially enlarged schematic view at a in fig. 7.
In the figure: 1. a purification tank; 11. a first separator plate; 12. a second separator plate; 121. a guide sloping plate; 13. a flocculation zone; 14. an air flotation zone; 15. a separation zone; 151. an outlet port; 16. controlling the bent pipe; 161. a butterfly valve; 2. a flocculation stirring mechanism; 21. a transverse plate; (ii) a 22. A stirring motor; 221. a drive gear; 23. a stirring paddle; 231. a main shaft; 232. a driven gear ring; 233. a liquid discharge pipe; 2331. a drain hole; 234. a blade; 3. swinging an air floatation device; 31. a swing drive mechanism; 311. a guide vertical plate; 312. a swing drive motor; 313. a crank disk; 314. a connecting rod; 315. a stroke plate; 3151. a guide bar; 316. a rack; 317. a swing shaft; 3171. a gear; 3172. clamping the groove block; 3173. a U-shaped clamping groove; 3174. a pin hole; 32. a set of vent tubes; 321. a main beam pipe; 3211. an air inlet; 322. a clamping head; 3221. fixing a sleeve; 3222. a clamping part; 3223. a fixing pin; 3224. a tension spring; 323. a secondary beam tube; 324. a bridge pipe; 325. a vent branch.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for the purpose of providing those skilled in the art with a more complete, accurate and thorough understanding of the concept and technical solution of the present invention, and to facilitate the implementation thereof, but not to limit the present invention.
Referring to the attached drawings 1-8, the multi-stage purification treatment process for industrial wastewater specifically comprises the following steps:
s1, removing precipitable impurities from the wastewater generated in the industrial production through standing and precipitation;
s2, introducing the wastewater subjected to the sedimentation treatment in the step S1 into a flocculation area 13 of the industrial wastewater purification treatment system, adding a flocculating agent and a coagulant aid into the flocculation area 13, and stirring the wastewater by a flocculation stirring mechanism 2 to form a flocculation effect;
s3, introducing the wastewater subjected to flocculation treatment in the step S2 into an air flotation region 14 of an industrial wastewater purification treatment system, and performing air flotation separation on the wastewater in the air flotation region 14 through a swing air flotation device 3 to realize scum separation;
s4, the wastewater after the air flotation separation treatment is finished in the step S3 enters a separation area 15 of the industrial wastewater purification treatment system, scum suspended on the water surface is discharged and cleaned, and the purified wastewater is discharged;
the process of performing multistage purification treatment on the industrial wastewater by adopting the multistage purification treatment process of the industrial wastewater of the steps S1-S4 also specifically relates to the industrial wastewater purification treatment system, which comprises a purification tank 1, a flocculation stirring mechanism 2 and a swing air floatation device 3;
the purification tank 1 is in a cube shape, a first partition plate 11 and a second partition plate 12 are arranged in parallel in the purification tank 1, three areas formed by the purification tank 1 through the first partition plate 11 and the second partition plate 12 are a flocculation area 13 located on one side of the first partition plate 11, an air flotation area 14 located between the first partition plate 11 and the second partition plate 12 and a separation area 15 located on one side of the second partition plate 12 in sequence, and when industrial wastewater purification is carried out, the settled industrial wastewater respectively completes flocculation purification, air flotation separation and scum cleaning through the flocculation area 13, the air flotation area 14 and the separation area 15 in sequence;
two flocculation stirring mechanisms 2 are arranged in the flocculation area 13; the flocculation stirring mechanism 2 comprises a stirring paddle 23 for rotary stirring, the stirring paddle 23 is positioned in the flocculation zone 13, the stirring paddle 23 comprises a main shaft 231 which is of a hollow structure and the bottom end of which is closed and can be introduced with wastewater, the main shaft 231 is vertically arranged, two groups of liquid discharge pipes 233 and two groups of blades 234 are alternately distributed on the main shaft 231 along the axial direction, each group of liquid discharge pipes 233 is composed of three liquid discharge pipes 233 which are uniformly distributed on the circumference, the liquid discharge pipes 233 are vertically communicated with the main shaft 231, and the front end of each liquid discharge pipe 233 is provided with a plurality of liquid discharge holes 2331; each group of blades 234 consists of three blades 234 which are uniformly distributed and welded on the main shaft 231 in the circumferential direction; the flocculation stirring mechanism 2 also comprises a transverse plate 21 horizontally welded at the top end of the flocculation area 13 and a stirring motor 22 assembled at the top end of the transverse plate 21 through a motor fixing frame; the output shaft of the stirring motor 22 is provided with a driving gear 221, the main shaft 231 is vertically and rotatably installed on the transverse plate 21, the main shaft 231 is provided with a driven gear ring 232 meshed with the driving gear 221, and the top end of the main shaft 231 is provided with an opening for introducing waste water.
The wastewater after the primary purification treatment by sedimentation is subjected to flocculation purification in a flocculation zone 13, specifically, the wastewater after the sedimentation treatment is pumped into the inner cavity of the main shaft 231 through a pipeline by connecting the pipeline at the top end of the main shaft 231 through the existing swivel joint; in the process of flocculation treatment, on one hand, wastewater after sedimentation treatment is pumped into the inner cavity of the main shaft 231 through the communicating pipe, enters the two groups of liquid discharge pipes 233 along with the inner cavity of the main shaft 231 is filled, and is then sprayed out from the liquid discharge holes 2331 at the front end of the liquid discharge pipes 233; on the other hand, the stirring motor 22 is started to drive the driving gear 221 to rotate, and the driving gear 221 drives the whole stirring paddle 23 to rotate along with the driving driven gear ring 232; along with the rotation of stirring rake 23, the waste water of following drainage hole 2331 discharge will use main shaft 231 to discharge all around as the rotation center axial, after gathering a certain amount of waste water in flocculation district 13, alright add flocculating agent and coagulant aid in to flocculation district 13, simultaneously when the pump goes into waste water afterwards, blade 234 will stir in step, and the dispersibility of the waste water of discharging in step along with the rotation of stirring rake 23 is better, be favorable to carrying out quick effective flocculation, changed traditional flocculation stirring in-process with the waste water centralized pump in bring be unfavorable for quick flocculation problem.
Two outer side walls at the opposite positions of the purification tank 1 are respectively provided with a control elbow 16 for communicating the flocculation zone 13 and the air flotation zone 14, and the control elbow 16 is provided with a butterfly valve 161 for controlling the circulation of the wastewater; as shown in fig. 4, it is apparent that the communicating ends of the control elbow 16 in the flocculation zone 13 and the air flotation zone 14 are both close to the inner bottom end of the purification tank 1; the wastewater is flocculated and stirred in the flocculation area 13, and is mainly characterized in that a flocculating agent is used for removing heavy metal ions, toxic and nonbiodegradable organic matters, radioactive elements and other solid particle substances in the wastewater through an adsorption method, a flocculation group is formed through adsorption and aggregation, namely, the solid-liquid separation of the first round is completed, after the effective flocculation is completed in the flocculation area 13, the butterfly valves 161 on the two sides can be opened to enable the two control bent pipes 16 to be in a passage state, and therefore the wastewater in the flocculation area 13 enters the air flotation area 14 through the control bent pipes 16.
The swing air floating device 3 is arranged in the air floating area 14; the swing air flotation device 3 comprises a swing driving mechanism 31 arranged at the top of the purifying tank 1 and a vent pipe group 32 driven by the swing driving mechanism 31 to do reciprocating swing, wherein the vent pipe group 32 is positioned in the air flotation area 14 and used for introducing compressed air to form bubbles; the swing driving mechanism 31 comprises two swing shafts 317 for swing action output, and the two swing shafts 317 are coaxially arranged in a mirror symmetry manner and are horizontally and rotatably arranged on two side walls of the purification tank 1 at the position of the air flotation area 14; the vent tube set 32 is removably mounted between the two swing shafts 317.
The vent pipe group 32 comprises a main beam pipe 321 arranged horizontally, clamping joints 322 arranged at two ends of the main beam pipe 321 in a mirror symmetry mode, an auxiliary beam pipe 323 arranged horizontally, two bridging pipes 324 and two rows of vent branch pipes 325; the two clamping joints 322 are detachably assembled on the two swing shafts 317 in a one-to-one correspondence manner, the secondary beam pipe 323 is positioned below the main beam pipe 321 and arranged in parallel with the main beam pipe 321, and the two bridge pipes 324 are uniformly distributed along the axial direction of the main beam pipe 321 and are communicated between the main beam pipe 321 and the secondary beam pipe 323; two rows of branch ventilation pipes 325 are oppositely arranged on the auxiliary beam pipe 323, and each row of branch ventilation pipes 325 consists of a plurality of branch ventilation pipes 325 which are communicated with the auxiliary beam pipe 323 and are uniformly distributed along the axial direction; the main beam pipe 321 is provided with an air inlet 3211, and the whole pipe wall of the air branch pipe 325 is uniformly distributed with air holes. At the position of the air inlet 3211, the communicating air pipe is used for introducing compressed air into the whole aeration pipe group 32, and the introduced compressed air enters the secondary beam pipe 323 from the primary beam pipe 321 along the two bridge pipes 324, and enters each aeration branch pipe 325 from the secondary beam pipe 323 in sequence, and finally is discharged from the air holes.
The swing driving mechanism 31 further comprises a guide vertical plate 311 welded at the top end of the first partition plate 11, a swing driving motor 312 fixedly installed on the guide vertical plate 311 through a motor fixing seat, a crank disc 313 horizontally arranged and connected to an output shaft of the swing driving motor 312, a connecting rod 314, a stroke plate 315 and a rack 316; the stroke plate 315 is located above the air floating area 14, the stroke plate 315 is connected with two guide rods 3151 horizontally arranged with the guide vertical plate 311 in a sliding manner, two ends of the connecting rod 314 are hinged between the crank disc 313 and the stroke plate 315, the stroke plate 315 is horizontally provided with two racks 316 arranged corresponding to the two swing shafts 317 one by one, and one end of the swing shaft 317 located outside the air floating area 14 is provided with a gear 3171 meshed with the racks 316. The entire vent pipe group 32 can be driven to swing back and forth by the swing driving mechanism 31, specifically, the crank disc 313 is driven to rotate by starting the swing driving motor 312, the crank disc 313 drives the entire stroke plate 315 to do back and forth reciprocating linear motion through the connecting rod 314, the two racks 316 synchronously do reciprocating linear motion along with the crank disc, and the racks 316 drive the gears 3171 engaged with the racks 316 in the reciprocating linear motion process, so that the two swing shafts 317 are driven to do reciprocating swing of a bell under the synchronous drive of the two racks 316, and then the vent pipe group 32 assembled between the two swing shafts 317 is driven to do reciprocating swing.
After the wastewater is effectively flocculated in the flocculation zone 13 and the two control elbows 16 are opened to feed the wastewater into the air flotation zone 14, the wastewater is subjected to air flotation separation in the air flotation zone 14, the swing air flotation device 3 is synchronously started along with the feeding of the wastewater, on one hand, the swing driving mechanism 31 drives the aeration pipe group 32 to perform reciprocating swing, and on the other hand, compressed gas is continuously fed into the air flotation zone 14 from the aeration pipe group 32; the introduced compressed air generates bubbles in the wastewater, and countless micro bubbles are combined with flocs, so that the buoyancy of the flocs is increased to enable the flocs to float upwards to form scum; the swing air floating device 3 in the system provided by the invention changes the traditional static air floating structure, and through reciprocating swing, on one hand, discharged air bubbles can float upwards in a curve manner, so that the air bubbles can be more randomly filled in the whole air floating area 14, the combination rate of the discharged air bubbles and floccules in wastewater is improved, the scum clearing rate is improved, the wastewater purification treatment effect is enhanced, on the other hand, each air branch pipe 325 is always in a swinging dynamic state through reciprocating swing, the impurities in the wastewater can be effectively prevented from being blocked at the air holes, the normal working state is ensured, and the problem that the air holes in the traditional air floating structure are easy to be blocked is solved.
A clamping groove block 3172 comprising a U-shaped clamping groove 3173 is arranged at one end of the swinging shaft 317, which is positioned in the air floating area 14, and a pin hole 3174 is arranged in the U-shaped clamping groove 3173; the clamping joint 322 comprises a fixing sleeve 3221 fixed at the end of the main beam pipe 321 in a sleeving manner, a clamping part 3222 welded with the fixing sleeve 3221, a fixing pin 3223 and a tension spring 3224; the clamping portion 3222 is cylindrical and is clamped and matched with the U-shaped clamping groove 3173, the fixing pin 3223 is slidably arranged along the diameter direction of the clamping portion 3222, the fixing pin 3223 can be inserted into the pin hole 3174, the tension spring 3224 is sleeved on the fixing pin 3223, and two ends of the tension spring 3224 are connected between the outer wall of the clamping portion 3222 and the middle portion of the fixing pin 3223. When the main beam pipe 321 is fixed on the swing shaft 317, the fixing pins 3223 are inserted into the pin holes 3174, and when the vent pipe group 32 needs to be disassembled, only the fixing pins 3223 on the two sides need to be pulled out of the pin holes 3174, so that the whole disassembling and assembling process is very convenient and fast to operate.
The top end of the second clapboard 12 is provided with a guide inclined plate 121, and the inclined plane of the guide inclined plate 121 inclines from the air floatation area 14 to the separation area 15; the purification tank 1 is provided with a discharge port 151 on the outer side wall of the separation zone 15.
Waste water will get into separation region 15 along direction swash plate 121 after air supporting is selected separately at air supporting district 14, and the dross will float on the upper strata, and at separation region 15, the accessible is artifical clears up floating, also can scrape off the dross automatically through the conveyer that is equipped with the scraper blade, and the waste water of accomplishing in addition after purifying the separation will be discharged from discharge port 151.
Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described in detail herein. Such variations do not affect the essence of the present invention and are not described herein.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; it will be understood by those skilled in the art that various changes and modifications may be made, or equivalents may be modified, without departing from the spirit of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (8)
1. A multistage purification treatment process for industrial wastewater is characterized in that: the treatment process specifically comprises the following steps:
s1, removing precipitable impurities from the wastewater generated in the industrial production through standing and precipitation;
s2, introducing the wastewater subjected to the sedimentation treatment in the step S1 into a flocculation area (13) of an industrial wastewater purification treatment system, adding a flocculating agent and a coagulant aid into the flocculation area (13), and stirring the wastewater by a flocculation stirring mechanism (2) to form a flocculation effect;
s3, introducing the wastewater subjected to flocculation treatment in the step S2 into an air flotation area (14) of an industrial wastewater purification treatment system, and performing air flotation separation on the wastewater in the air flotation area (14) through a swing air flotation device (3) to realize scum separation;
s4, the wastewater after the air flotation separation treatment is finished through the step S3 enters a separation area (15) of an industrial wastewater purification treatment system, scum suspended on the water surface is discharged and cleaned, and the purified wastewater is discharged;
the process of carrying out multistage purification treatment on the industrial wastewater by adopting the multistage purification treatment process of the industrial wastewater of the steps S1-S4 also specifically relates to the industrial wastewater purification treatment system, which comprises a purification tank (1), a flocculation stirring mechanism (2) and a swing air floatation device (3); wherein:
the purification tank (1) is cube-shaped, a first clapboard (11) and a second clapboard (12) are arranged in the purification tank (1) in parallel, and the purification tank (1) is sequentially provided with a flocculation area (13) positioned on one side of the first clapboard (11), an air flotation area (14) positioned between the first clapboard (11) and the second clapboard (12) and a separation area (15) positioned on one side of the second clapboard (12) through the first clapboard (11) and the second clapboard (12) for three areas formed in a separating way; two outer side walls at the opposite positions of the purification tank (1) are respectively provided with a control elbow (16) for communicating the flocculation area (13) with the air flotation area (14); the flocculation area (13) is provided with two flocculation stirring mechanisms (2), and the air floatation area (14) is provided with the swing air floatation device (3);
the swing air flotation device (3) comprises a swing driving mechanism (31) arranged at the top of the purifying tank (1) and an aeration pipe group (32) driven by the swing driving mechanism (31) to make reciprocating swing, wherein the aeration pipe group (32) is positioned in the air flotation area (14) and is used for introducing compressed air to form bubbles; the swing driving mechanism (31) comprises two swing shafts (317) for swing action output, and the two swing shafts (317) are coaxially arranged in a mirror symmetry mode and are horizontally and rotatably arranged on two side walls of the purification tank (1) at the position of the air floatation area (14); the aeration pipe group (32) is detachably assembled between the two swinging shafts (317).
2. The multi-stage purification treatment process of industrial wastewater according to claim 1, characterized in that: the aeration pipe group (32) comprises a main beam pipe (321) which is horizontally arranged, clamping joints (322) which are arranged at two ends of the main beam pipe (321) in a mirror symmetry mode and fixedly installed, an auxiliary beam pipe (323) which is horizontally arranged, a plurality of bridging pipes (324) and two rows of aeration branch pipes (325); the two clamping joints (322) are detachably assembled on the two swinging shafts (317) in a one-to-one correspondence mode, the auxiliary beam pipes (323) are positioned below the main beam pipes (321) and are arranged in parallel with the main beam pipes, and the plurality of bridging pipes (324) are axially, linearly and uniformly distributed along the main beam pipes (321) and are communicated between the main beam pipes (321) and the auxiliary beam pipes (323); the two rows of the branch ventilation pipes (325) are oppositely arranged on the auxiliary beam pipe (323), and each row of the branch ventilation pipes (325) consists of a plurality of branch ventilation pipes (325) which are communicated with the auxiliary beam pipe (323) and are uniformly distributed along the axial direction; the main beam pipe (321) is provided with an air inlet (3211), and the whole pipe wall of the ventilation branch pipe (325) is uniformly distributed with air holes.
3. The multi-stage purification treatment process of industrial wastewater according to claim 1, characterized in that: the flocculation stirring mechanism (2) comprises a stirring paddle (23) for rotating and stirring, the stirring paddle (23) is positioned in the flocculation area (13), the stirring paddle (23) comprises a main shaft (231) which is of a hollow structure and the bottom end of which is closed and can be introduced with wastewater, the main shaft (231) is vertically arranged, two groups of liquid discharge pipes (233) and two groups of blades (234) are axially and alternately distributed on the main shaft (231), each group of liquid discharge pipes (233) is composed of a plurality of liquid discharge pipes (233) which are uniformly distributed on the circumference, and the liquid discharge pipes (233) are vertically communicated with the main shaft (231); each group of blades (234) is composed of a plurality of blades (234) which are uniformly distributed on the circumference and fixedly connected to the main shaft (231).
4. The multi-stage purification treatment process of industrial wastewater according to claim 2, characterized in that: a clamping groove block (3172) comprising a U-shaped clamping groove (3173) is arranged at one end of the swing shaft (317) positioned in the air floating area (14), and a pin hole (3174) is arranged in the U-shaped clamping groove (3173); the clamping joint (322) comprises a fixed sleeve (3221) which is fixedly sleeved on the end part of the main beam pipe (321), a clamping part (3222) which is fixedly connected with the fixed sleeve (3221), a fixed pin (3223) and a tension spring (3224); joint portion (3222) are cylindric and with U type draw-in groove (3173) joint cooperation, fixed pin (3223) are followed joint portion (3222) diameter direction runs through the slip setting, fixed pin (3223) can insert in pinhole (3174), extension spring (3224) cover is established on fixed pin (3223) and both ends are connected joint portion (3222) outer wall with between fixed pin (3223) middle part.
5. The multi-stage purification treatment process of industrial wastewater according to claim 4, characterized in that: the swing driving mechanism (31) further comprises a guide vertical plate (311) fixed at the top end of the first partition plate (11), a swing driving motor (312) fixedly installed on the guide vertical plate (311) through a motor fixing seat, and a crank disc (313), a connecting rod (314), a stroke plate (315) and a rack (316) which are horizontally arranged and connected to an output shaft of the swing driving motor (312); the stroke plate (315) is located above the air floating area (14), a plurality of guide rods (3151) horizontally arranged with the guide vertical plate (311) are connected to the stroke plate (315), two ends of the connecting rod (314) are hinged between the crank disc (313) and the stroke plate (315), two racks (316) which are one-to-one corresponding to the two swinging shafts (317) are horizontally arranged on the stroke plate (315), and a gear (3171) meshed with the racks (316) is arranged at one end of each swinging shaft (317) located on the outer side of the air floating area (14).
6. The multi-stage purification treatment process of industrial wastewater according to claim 3, characterized in that: the flocculation stirring mechanism (2) also comprises a transverse plate (21) horizontally fixed at the top end of the flocculation area (13) and a stirring motor (22) assembled at the top end of the transverse plate (21) through a motor fixing frame; be provided with drive gear (221) on the output shaft of agitator motor (22), main shaft (231) vertical rotation is installed on diaphragm (21), be provided with on main shaft (231) with driven ring gear (232) of drive gear (221) meshing, main shaft (231) top is provided with the opening that is used for letting in waste water.
7. The multi-stage purification treatment process of industrial wastewater according to claim 3, characterized in that: the front end of the liquid discharge pipe (233) is provided with a plurality of liquid discharge holes (2331).
8. The multi-stage purification treatment process of industrial wastewater according to claim 1, characterized in that: the outer side wall of the separation area (15) on the purification tank (1) is provided with a discharge port (151).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110646509.3A CN113371876A (en) | 2021-06-10 | 2021-06-10 | Multistage purification treatment process for industrial wastewater |
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| CN202110646509.3A CN113371876A (en) | 2021-06-10 | 2021-06-10 | Multistage purification treatment process for industrial wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115849593A (en) * | 2022-10-31 | 2023-03-28 | 湖南东祥油脂股份有限公司 | High-phosphorus-content wastewater treatment process |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115849593A (en) * | 2022-10-31 | 2023-03-28 | 湖南东祥油脂股份有限公司 | High-phosphorus-content wastewater treatment process |
| CN115849593B (en) * | 2022-10-31 | 2023-06-13 | 湖南东祥油脂股份有限公司 | High-phosphorus wastewater treatment process |
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Application publication date: 20210910 |