WO2019195997A1

WO2019195997A1 - Printing and dyeing wastewater pre-treatment apparatus

Info

Publication number: WO2019195997A1
Application number: PCT/CN2018/082426
Authority: WO
Inventors: 龚金凤
Original assignee: 龚金凤
Priority date: 2018-04-10
Filing date: 2018-04-10
Publication date: 2019-10-17

Abstract

Disclosed is a printing and dyeing wastewater pre-treatment apparatus, comprising a sedimentation tank (1) and a flocculation container (7). The sedimentation tank (1) comprises an upper tank cavity (2) and a lower tank cavity (3), one side end of the upper tank cavity (2) being in communication with a first inlet pipe (4), and the other end of the first inlet pipe (4) being in communication with a second inlet pipe (5); and the other end of the upper tank cavity (2) being in communication with a discharge pipe (6). The flocculation container (7) is in communication with a side, close to the upper tank cavity (2), of a top end of the discharge pipe (6), and an electric motor (9) is provided in the flocculation container (7). A motor shaft of the electric motor (9) is a hollow shaft, a top end of the motor shaft of the electric motor (9) penetrating a top end of the flocculation container (7) and being in communication with a feeding hopper (11), and a bottom end of the motor shaft of the electric motor (9) being in communication with a centrifugal barrel (12). Several blending blades (13) are uniformly arranged on an upper portion of an outer circular surface of the centrifugal barrel (12) in a circumferential direction. Providing the sedimentation tank (1) and the flocculation container (7) realizes preliminary sedimentation and flocculation treatment of wastewater, thereby reducing solid particles in the wastewater, lowering the concentration thereof in the wastewater and facilitating the normal discharge and circulation of the wastewater.

Description

Printing and dyeing sewage pretreatment device

Technical field

The utility model relates to the technical field of sewage treatment devices, in particular to a printing and dyeing sewage pretreatment device.

Background technique

With the development of textile printing and dyeing industry, the impact of printing and dyeing wastewater on the environment is increasing. The research and development of printing and dyeing industrial wastewater is also continuously transformed. Membrane separation technology is a new type of efficient and environmentally friendly separation technology. The continuous development and advancement of technology in China has made modern high-tech membrane separation technology (mainly ultrafiltration, nanofiltration and reverse osmosis technology) widely used in the printing and dyeing industry, and has produced good economic and social benefits. It brings new opportunities for technological innovation in the printing and dyeing industry. The textile printing and dyeing wastewater has the characteristics of large water volume, high organic pollutant content, large alkalinity and large water quality change. It is one of the difficult industrial wastewaters, and the wastewater contains dyes and pulp. Materials, additives, oil agents, acid and alkali, fiber impurities, sand materials, inorganic salts, etc.

The concentration of sewage produced by textile printing and dyeing is relatively high. The treatment of common sewage is centralized treatment, which reduces the treatment cost. However, due to the high concentration of printing and dyeing wastewater, the pipeline transportation is prone to blockage and other problems. The pipeline needs frequent maintenance and reduces sewage treatment efficiency. Increase processing costs.

Utility model content

It is an object of the present invention to provide a printing and dyeing wastewater pretreatment apparatus to solve the problems set forth in the above background art.

To achieve the above object, the present invention provides the following technical solutions:

A printing and dyeing sewage pretreatment device comprises a sedimentation tank and a flocculation tank, wherein the sedimentation tank comprises an upper tank chamber and a lower tank chamber, and the upper tank chamber is connected through the top end of the lower tank chamber, and the upper tank chamber and the lower pool chamber are both cylindrical structure design, upper One end of the chamber is connected to the first inlet pipe, and the other end of the first inlet pipe is connected to the second inlet pipe. The other end of the second inlet pipe is connected to the sewage discharge system, and the other end of the upper chamber is connected to the drain pipe. The top end of the drain pipe is connected to the flocculation tank on the side close to the upper chamber cavity, and the motor is arranged in the flocculation box. The motor is fixed on the inner wall of the flocculation tank through the bracket rod. The motor shaft of the motor is a hollow shaft, and the motor shaft of the motor is worn at the top. The top end of the flocculation tank is connected to the hopper, and the motor shaft of the motor is connected to the flocculation tank through the bearing. The bottom end of the motor shaft of the motor is connected to the centrifugal cylinder, and the outer circumference of the centrifugal cylinder is evenly arranged in the circumferential direction. The stirring blade is provided with a plurality of discharge holes uniformly in the lower part of the outer circular surface of the centrifugal cylinder, and a side of the drainage pipe away from the flocculation tank is provided with a diverter plate, and the diverter plate is a curved plate and is divided. a filter mesh is fixedly connected to the left side of the top end of the plate, and a drain hole is arranged at a bottom end of the drain pipe, the drain hole corresponds to the flow splitter plate in a vertical direction, and the bottom end of the drain hole is connected through the drain pipe to the lower pool cavity. At the bottom, a partition plate is arranged in the lower chamber, and a plurality of through holes are evenly arranged on the partition plate. The partition plate is arranged above the water outlet end of the drain pipe, and a sewage pump is arranged at the bottom of the lower tank cavity, and the sewage pump passes through the connecting pipe and the sludge collecting place. connection.

As a further technical solution of the present invention, the diameter of the upper chamber is larger than the diameter of the lower chamber.

As a further technical solution of the present invention, the diameter of the first inlet pipe is larger than the diameter of the second inlet pipe.

According to still another aspect of the present invention, the outer circumference of the outer circumference of the centrifugal cylinder is uniformly provided with two or three stirring blades.

As a further technical solution of the present invention, the filter screen is a tilted arrangement.

As a further technical solution of the present invention, the diameter of the through hole is greater than 5 cm.

Compared with the prior art, the utility model realizes preliminary sedimentation and flocculation treatment of sewage by setting sedimentation tank and flocculation tank, reduces solid particulate matter in sewage, reduces sewage concentration, and facilitates normal discharge and circulation of sewage, and the whole structure design is scientific and reasonable. The sewage discharge is uninterrupted to ensure the normal circulation of sewage.

DRAWINGS

1 is a schematic structural view of a printing and dyeing sewage pretreatment apparatus according to the present invention;

2 is a schematic structural view of a partition plate of a printing and dyeing sewage pretreatment apparatus according to the present invention.

In the picture: 1-precipitation tank, 2-upper chamber chamber, 3-lower chamber chamber, 4-first inlet pipe, 5-second inlet pipe, 6-drain pipe, 7-flocc tank, 8-bracket rod, 9- Motor, 10-bearing, 11-feed hopper, 12-centrifuge, 13-stirring, 14-drain, 15-split, 16-filter, 17-sewage, 18-sewage, 19-isolated Plate, 20-through hole, 21-sewage pump, 22-connecting tube.

detailed description

The technical solutions of the present patent are further described in detail below in conjunction with specific embodiments.

Referring to FIGS. 1 and 2, a printing and dyeing wastewater pretreatment apparatus includes a sedimentation tank 1 and a flocculation tank 7, and the sedimentation tank 1 includes an upper tank chamber 2 and a lower chamber chamber 3, and the upper chamber chamber 2 is connected through the lower chamber chamber. The top of the chamber 3, the upper chamber 2 and the lower chamber 3 are both cylindrical structures, the diameter of the upper chamber 2 is larger than the diameter of the lower chamber 3, and the one end of the upper chamber 2 is connected to the first inlet pipe 4, The other end of the first inlet pipe 4 is connected to the second inlet pipe 5, and the other end of the second inlet pipe 5 is connected to the sewage discharge system. The diameter of the first inlet pipe 4 is larger than the diameter of the second inlet pipe 5, The other end of the upper chamber 2 is connected to the drain pipe 6. The top end of the drain pipe 6 is adjacent to the upper chamber 2 and is connected to the flocculation tank 7 . The flocc tank 7 is provided with a motor 9 . 9 is fixed on the inner wall of the flocculation box 7 by the bracket rod 8. The motor shaft of the motor 9 is a hollow shaft, and the motor shaft end of the motor 9 passes through the top end of the flocculation tank 7 and is connected to the hopper 11 through, and the motor shaft of the motor 9 passes through the bearing. 10 is rotatably connected to the flocculation tank 7, and the bottom end of the motor shaft of the motor 9 is connected to the centrifugal cylinder 12, A plurality of agitating blades 13 are uniformly disposed in a circumferential direction of the outer circumferential surface of the core tube 12, and a plurality of discharge holes 14 are uniformly disposed at a lower portion of the outer circular surface of the centrifuge tube 12, and the inside of the drain pipe 6 is away from the flocculation tank 7 A splitter plate 15 is disposed on one side, and the splitter plate 15 is a curved plate. A filter net 16 is fixedly connected to the left end of the top end of the splitter plate 15. The filter net 16 is disposed obliquely, and the bottom end of the drain pipe 6 is provided. There is a drain hole 17, which corresponds to the flow dividing plate 15 in the vertical direction, and the bottom end of the drain hole 17 is connected through the drain pipe 18 to the bottom of the lower chamber 3, and the lower chamber 3 is provided with isolation. The plate 19 has a plurality of through holes 20 uniformly disposed on the partitioning plate 19. The partitioning plate 19 is disposed above the water outlet end of the drain pipe 18. The diameter of the through hole 20 is greater than 5 cm, and the bottom of the lower cell cavity 3 is provided with sewage. The pump 21, the sewage pump 21 is connected to the sludge collection portion through a connecting pipe 22.

When the utility model is used, the sewage enters the first inlet pipe 4 through the second inlet pipe 5, and then enters the upper pool cavity 2. Since the space of the upper pool cavity 2 is larger than the space of the first inlet pipe 4, the second inlet pipe 4 The space is larger than the space of the first inlet water 5, so that the flow rate of the water is gradually reduced, and the water flow is slowly entered into the upper chamber 2, so that the solid matter in the sewage is precipitated in the sedimentation tank 1, and the precipitated fixed substance enters the lower chamber cavity. At the bottom of the 3, the precipitated sewage enters the drain pipe 6, and the flocculant is added through the hopper 11. The flocculant is mixed with the floating particles in the sewage, flocculated into a block, and the sewage 16 and the splitter 16 act together to discharge the sewage. The hole 17 is discharged, and enters the bottom of the lower tank chamber 3 through the sewage pipe 18, and is discharged by the sewage pump 21 to initially realize sedimentation and flocculation treatment of the sewage, reduce solid particles in the sewage, reduce the concentration of the sewage, and facilitate the normal discharge of the sewage.

The preferred embodiments of the present invention have been described in detail above, but the present patent is not limited to the above embodiments, and various modifications may be made without departing from the scope of the patents of the present invention. Kind of change.

Claims

A printing and dyeing sewage pretreatment device is characterized in that it comprises a sedimentation tank and a flocculation tank, the sedimentation tank comprises an upper tank chamber and a lower tank chamber, the upper chamber chamber is connected through the top end of the lower chamber chamber, and the upper chamber chamber and the lower chamber chamber are cylinders The structural design is such that one end of the upper chamber is connected to the first inlet pipe, the other end of the first inlet pipe is connected to the second inlet pipe, and the other end of the second inlet pipe is connected to the sewage discharge system, and the other end of the upper chamber The drain pipe is connected through the drain pipe, and the top end of the drain pipe is connected to the flocculation tank at a side close to the upper tank cavity. The motor is arranged in the flocculation box, and the motor is fixed on the inner wall of the flocculation tank through the bracket rod. The motor shaft of the motor is a hollow shaft, and the motor is The top end of the motor shaft passes through the top end of the flocculation tank and is connected to the hopper. The motor shaft of the motor is connected to the flocculation tank through the bearing. The bottom end of the motor shaft of the motor is connected to the centrifugal cylinder, and the outer circumference of the outer cylinder is evenly distributed in the circumferential direction. a plurality of stirring blades are arranged, and a plurality of discharge holes are uniformly arranged in a lower portion of the outer circular surface of the centrifugal cylinder, and a flow dividing plate is arranged on a side of the drainage pipe away from the flocculation tank, and the distribution plate is a filter plate is fixedly connected to the left side of the top end of the splitter plate, and a drain hole is arranged at a bottom end of the drain pipe, the drain hole corresponds to the flow splitter plate in a vertical direction, and the bottom end of the drain hole is connected through the drain pipe At the bottom of the lower chamber, a partition plate is arranged in the lower chamber, and a plurality of through holes are evenly arranged on the partition plate. The partition plate is arranged above the water outlet end of the drain pipe, and a sewage pump is arranged at the bottom of the lower tank chamber, and the sewage pump passes through the connecting pipe and The sludge collection site is connected through.
A printing and dyeing wastewater pretreatment apparatus according to claim 1, wherein the diameter of the upper chamber is larger than the diameter of the lower chamber.
A printing and dyeing wastewater pretreatment apparatus according to claim 1, wherein the diameter of the first inlet pipe is larger than the diameter of the second inlet pipe.
A printing and dyeing wastewater pretreatment apparatus according to claim 1, wherein the outer circumference of the outer circumference of the centrifugal cylinder is uniformly provided with two or three stirring blades.
A printing and dyeing wastewater pretreatment apparatus according to claim 1, wherein the filter screen is inclined.
A printing and dyeing wastewater pretreatment apparatus according to claim 1, wherein the through hole has a diameter of more than 5 cm.