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CN-120518157-B - Treatment mechanism for up-to-standard discharge of printing and dyeing wastewater

CN120518157BCN 120518157 BCN120518157 BCN 120518157BCN-120518157-B

Abstract

The invention discloses a treatment mechanism for up-to-standard discharge of printing and dyeing wastewater, which comprises an air flotation tank, a sedimentation tank and a collecting tank, wherein a water inlet is formed in the outer side of the air flotation tank, a water outlet is formed in the outer side of the sedimentation tank, and an air outlet plate is fixed at the lower end of the air flotation tank and used for generating bubbles moving upwards. According to the invention, through the wastewater entering the air flotation tank, a part of suspended matters and wastewater are separated, the bubbles push the particles on the first filter plate upwards, so that the first filter plate is prevented from being blocked, the particles are prevented from being settled, the particles are positioned close to the lower end of the wastewater, the wastewater with the particles is conveniently conveyed from the separating pipe rack to the sedimentation tank, the subsequent processing is convenient, the particles are originally close to the lower end of the sedimentation tank, the second filter plate is influenced by the gas blown outwards from the gas outlet holes by the tubules, the particles clamped to the second holes of the second filter plate are pushed downwards, the second filter plate is prevented from being blocked, the smoothness is maintained, and the wastewater is prevented from being blocked.

Inventors

  • WANG YINGJIE
  • HU JIANFEI
  • XU ZHONGWEI
  • XU JIAFEI
  • SHEN JIE

Assignees

  • 桐乡市雅美纺织科技有限公司

Dates

Publication Date
20260508
Application Date
20250522

Claims (6)

  1. 1. The treatment mechanism for the up-to-standard discharge of the printing and dyeing wastewater comprises an air flotation tank (1), a sedimentation tank (2) and a collecting tank (3), and is characterized in that a water inlet (4) is formed in the outer side of the air flotation tank (1), and a water outlet (5) is formed in the outer side of the sedimentation tank (2); an air outlet plate (11) is fixed at the lower end of the air flotation tank (1) and is used for generating bubbles moving upwards; The upper ends of the air flotation tank (1), the sedimentation tank (2) and the collection tank (3) are provided with an air flotation treatment unit (6) for scraping suspended matters moving upwards; a first filter plate (13) is arranged in the air flotation tank (1), a second filter plate (21) is arranged in the sedimentation tank (2), and the first filter plate (13) and the second filter plate (21) are used for blocking particles in wastewater; An upper support (65) is fixed on the upper end face of the sedimentation tank (2), the sedimentation tank (2) is covered by the upper support (65), and the upper end face of the upper support (65) is a horizontal plane; The air floatation treatment unit (6) comprises two conveying rollers (61), the two conveying rollers (61) are respectively rotatably arranged at the upper ends of the air floatation tank (1) and the collecting tank (3), a conveying belt (63) is driven between the two conveying rollers (61), scraping plates (64) which are arranged at intervals are fixed on the outer wall of the conveying belt (63), and the scraping plates (64) are used for cleaning the liquid level of the air floatation tank (1); The first filter plate (13) is positioned at the horizontal lower end of the second filter plate (21), a separation port (14) is formed between the first air flotation tank (1) and the sedimentation tank (2), a separation pipe rack (15) is arranged in the separation port (14) in a clamping manner, the separation pipe rack (15) is used for connecting the first air flotation tank (1) and the sedimentation tank (2), and the separation pipe rack (15) is communicated with the upper end of the first filter plate (13) and the lower end of the second filter plate (21); The inside of the sedimentation tank (2) is also provided with a dredging unit (7), the dredging unit (7) comprises a support frame (71) positioned at the upper end of the second filter plate (21), a tubule (72) arranged and arranged is fixed at the inner side of the support frame (71), the lower end of the tubule (72) is provided with an air outlet hole (73), the air outlet hole (73) corresponds to the filter hole of the second filter plate (21), a hose is fixed at the outer side of the arranged tubule (72), an air inlet pipe (12) is arranged at the outer side of the air flotation tank (1), and the air inlet pipe (12) is connected with an air outlet plate (11) and the hose arranged on the tubule (72); The upper end of support frame (71) is fixed with back shaft (74), have outer tube (76) that run through downwards in the middle of upper bracket (65), back shaft (74) upwards runs through outer tube (76), be fixed with round internal extension layer (77) on the inner wall of outer tube (76), back shaft (74) outside has round internal orifice (75), internal extension layer (77) are located internal orifice (75), internal extension layer (77) lower extreme is fixed with interior supporting spring (78), the upper end of back shaft (74) is the slope setting for with scraper blade (64) extrusion, back shaft (74) receive scraper blade (64) extrusion downward movement, interior supporting spring (78) are stretched.
  2. 2. The treatment mechanism for up-to-standard discharge of printing and dyeing wastewater according to claim 1, wherein the water inlet (4) and the water outlet (5) are positioned on the same horizontal plane, and the water inlet (4) and the water outlet (5) are both close to the liquid level of the wastewater.
  3. 3. The treatment mechanism for up-to-standard discharge of printing and dyeing wastewater according to claim 1, wherein: The outside of one transmission roller (61) is provided with a motor (62), the motor (62) is fixed with the air supporting box (1), and the motor (62) is used for driving the transmission roller (61) to rotate.
  4. 4. The treatment mechanism for up-to-standard discharge of printing and dyeing wastewater according to claim 1, wherein rubber layers are fixed at two ends of the separation pipe rack (15), and the two rubber layers are respectively extruded with the air flotation tank (1) and the sedimentation tank (2) to avoid gaps of the separation port (14).
  5. 5. The treatment mechanism for up-to-standard discharge of printing and dyeing wastewater according to claim 1, wherein the lower end face of the separation pipe frame (15) is flush with the upper end face of the first filter plate (13) and is used for discharging wastewater close to the first filter plate (13).
  6. 6. The treatment mechanism for up-to-standard discharge of printing and dyeing wastewater according to claim 1, wherein the air inlet pipe (12) is used for inputting air.

Description

Treatment mechanism for up-to-standard discharge of printing and dyeing wastewater Technical Field The invention relates to the technical field of printing and dyeing emission, in particular to a treatment mechanism for up-to-standard emission of printing and dyeing wastewater. Background If the printing and dyeing wastewater reaches the discharge standard, a series of treatment processes are required. These treatments generally include physical, chemical and biological methods, and sometimes require the use of a combination of these methods. The physical method mainly uses physical action to remove suspended matters, colloid substances and oil substances in the wastewater. Wherein, the air-float method uses the air bubble floating action to remove the suspended pollutant in the wastewater. The printing and dyeing waste water contains a large amount of organic colloid particles which are various grease in emulsion, and the impurities are small in floccule particles, light in weight and poor in precipitation performance after coagulation, and can be separated by adopting an air floatation method. In the treatment of printing and dyeing wastewater, an air flotation method has a tendency of replacing a precipitation method, and is a main treatment method of the printing and dyeing wastewater. When printing and dyeing wastewater is operated by an air floatation method, the wastewater is also provided with some particles which can be precipitated, the particles cannot float upwards under the action of the air floatation method, the particles are difficult to precipitate downwards on the upward thrust, when suspended matters in the wastewater are cleaned by the air floatation method, the wastewater is further treated, two or even more steps are required to be operated, and the wastewater particles and the suspended matters are treated based on the steps, so that the improvement is provided for the existing treatment equipment. Disclosure of Invention The invention aims to provide a treatment mechanism for up-to-standard discharge of printing and dyeing wastewater, which aims to solve the problems in the background technology. In order to solve the technical problems, the invention provides the technical scheme that the treatment mechanism for the up-to-standard discharge of the printing and dyeing wastewater comprises an air flotation tank, a sedimentation tank and a collecting tank, wherein a water inlet is formed in the outer side of the air flotation tank, and a water outlet is formed in the outer side of the sedimentation tank; An air outlet plate is fixed at the lower end of the air flotation tank and is used for generating bubbles moving upwards; the upper ends of the air flotation tank, the sedimentation tank and the collecting tank are provided with an air flotation treatment unit for scraping suspended matters moving upwards; The air flotation tank is internally provided with a first filter plate, the sedimentation tank is internally provided with a second filter plate, and the first filter plate and the second filter plate are used for blocking particles in wastewater. Further, the water inlet and the water outlet are positioned on the same horizontal plane, and both the water inlet and the water outlet are close to the liquid level of the wastewater. Further, an upper bracket is fixed on the upper end surface of the sedimentation tank, the sedimentation tank cover is arranged by the upper bracket, and the upper end surface of the upper bracket is a horizontal plane; The air floatation treatment unit comprises two transmission rollers, the two transmission rollers are respectively rotatably arranged at the upper ends of the air floatation box and the collecting box, a transmission belt is driven between the two transmission rollers, scraping plates which are arranged at intervals are fixed on the outer wall of the transmission belt, and the scraping plates are used for cleaning the liquid level of the air floatation box; the outside of one transmission roller is equipped with the motor, the motor is fixed with the air supporting case, the motor is used for driving the transmission roller and rotates. Further, the first filter plate is located the two horizontal lower extreme of filter, the separation mouth has been seted up between air supporting case and the sedimentation tank, the separation mouth inside callipers is equipped with the separation pipe support, the separation pipe support is used for linking to air supporting case and sedimentation tank, just the separation pipe support intercommunication filter first upper end and two lower extreme of filter. Further, rubber layers are fixed at two ends of the separation pipe rack, and the two rubber layers are respectively extruded with the air flotation tank and the sedimentation tank, so that gaps are formed in the separation openings. Further, the lower end face of the separation pipe frame is flush with the upper end face of the filter plate, and