CN215250234U

CN215250234U - Reclaimed water recycling system

Info

Publication number: CN215250234U
Application number: CN202120228305.3U
Authority: CN
Inventors: 屈文生; 左玉俊
Original assignee: Vientiane Tiancheng Tianjin Ecological Environment Technology Co ltd
Current assignee: Vientiane Tiancheng Tianjin Ecological Environment Technology Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-12-21
Anticipated expiration: 2031-01-27

Abstract

The utility model provides a reclaimed water recycling system, belonging to the technical field of water treatment equipment, comprising a heat exchange device, wherein the heat exchange tube is designed in a rotary shape, a plurality of baffle plates are fixed on the inner wall of the heat exchange device, and the baffle plates are matched with the arrangement of the heat exchange tube; the sewage outlet is communicated with the water inlet of the grid adjusting tank, the water outlet of the grid adjusting tank is communicated with the air flotation tank, a dissolved air release pipe is arranged inside the air flotation tank, a plurality of air release holes are uniformly formed in the dissolved air release pipe, an air dissolving guide plate is installed above the air release holes, an overflow groove is formed in the upper side of one end, away from the grid adjusting tank, of the air flotation tank and used for removing emulsified oil in sewage, the water outlet of the air flotation tank is communicated with the biological contact oxidation tank, after the microbial action of the biological contact oxidation tank, water enters the sedimentation tank and is precipitated in the sedimentation tank, precipitates are discharged to the sludge tank, and upper water flows to the activated carbon filter and is discharged after being filtered. The utility model has the advantages of compact structure, energy saving, environmental protection, good decontamination effect and stable recycling.

Description

Reclaimed water recycling system

Technical Field

The utility model belongs to the technical field of water treatment facilities, especially, relate to a reclaimed water recycling system.

Background

The reuse of reclaimed water is that domestic sewage (or urban sewage) or industrial wastewater is subjected to advanced technical treatment to remove various impurities, remove toxic and harmful substances and some heavy metal ions polluting water bodies, and then is disinfected and sterilized, so that the water bodies are colorless, odorless, clear and transparent, and reach or exceed national miscellaneous water standards (or related regulations), and the method is widely applied to enterprise production or residential life.

The sewage in the reclaimed water production process is turbid and smelly, and contains a large amount of oil stain, SS and COD, the existing reclaimed water recovery system has low removal rate on the oil stain, the SS and the COD, the treated sewage cannot meet the recycling requirement, and the recycling can not be realized. In addition, the reclaimed water recovery system only has the function of recycling water resources, does not fully utilize the heat of medium-high temperature drainage, and wastes heat energy.

Disclosure of Invention

The to-be-solved problem of the utility model is to provide a reclaimed water recycling system of compact structure, energy-concerving and environment-protective, decontamination effect is good, steady retrieval and utilization.

In order to solve the technical problem, the utility model discloses a technical scheme is: a reclaimed water recycling system comprises a heat exchange device, wherein a heat exchange tube inlet and a heat exchange tube outlet are formed in one side of the heat exchange device, a sewage inlet is formed in the top of the heat exchange device close to the heat exchange tube inlet, a sewage outlet is formed in the bottom of the heat exchange device far away from the heat exchange tube outlet, the heat exchange tube is designed in a rotary shape, a plurality of baffle plates are fixed on the inner wall of the heat exchange device, and the baffle plates are matched with the heat exchange tube; the sewage outlet is communicated with the water inlet of the grid adjusting tank, the water inlet of the grid adjusting tank is provided with a grid for intercepting large floaters and particles, the water outlet of the grid adjusting tank is communicated with the air flotation tank, the air flotation tank adds an emulsion breaker and a flocculating agent into the air flotation tank through an emulsion breaker dosing device and a flocculating agent dosing device, the inner part of the air flotation tank is provided with an air dissolving release pipe, the air dissolving release pipe is uniformly provided with a plurality of air release holes, an air dissolving guide plate is arranged above the air release holes and is of a symmetrically arranged pointed top type structure, the upper side of one end of the air flotation tank, which is far away from the grid adjusting tank, is provided with an overflow groove, the overflow groove is communicated with the oil residue tank and is used for removing emulsified oil in sewage, the water outlet of the air flotation tank is communicated with the biological contact oxidation tank, and after the microbial action of the biological contact oxidation tank, the water body enters a sedimentation tank, is precipitated by the sedimentation tank, the precipitate is discharged to a sludge tank, and the upper water body flows to an active carbon filter to be filtered and then is discharged.

The output end of the sludge pond is communicated with the plate-and-frame filter press, and sludge is dewatered by the plate-and-frame filter press and then is transported outside a sludge cake.

Since the technical scheme is used, the utility model discloses compact structure, sewage get into heat transfer device from the sewage entry, treat to add the heat water source and get into the heat exchange tube from the heat exchange tube entry, the heat exchange tube is gyration shape design, and the heat transfer device inner wall is fixed with a plurality of baffling boards, and above-mentioned design has increased the heat transfer route, has increased heat transfer area, and baffling board cooperation heat exchange tube sets up, makes sewage be the contact of vertical advancing formula with the heat exchange tube, improves heat exchange efficiency, and is energy-concerving and environment-protective. The sewage after heat exchange flows into a grid regulating tank, the grid is used for intercepting large floating objects and particles, and then flows into an air floating tank, dissolved air with a large amount of micro-fine bubbles is released through a plurality of air release holes on a dissolved air release pipe, the dissolved air is vertically sprayed out from air outlet holes and is guided to release through a pointed top type structure after being mixed with the sewage due to the fact that an air dissolving guide plate is arranged above the air release holes, the design can effectively weaken the stirring phenomenon of the dissolved air with pressure on water flow after being released, the dissolved air and the sewage can be fully and uniformly mixed in a short time to form a scum layer of a water-air-particle three-phase mixed system, the scum layer floats upwards from the water with the density smaller than that of the water and is discharged to an oil slag tank through an overflow tank, emulsified oil in the sewage is efficiently removed through adding a demulsifier and a flocculating agent, and COD in the sewage flowing into a biological contact oxidation tank after separation is further removed under the action of microorganisms, and then the waste water is purified by an active carbon filter to remove peculiar smell in the water, further improve the purification treatment effect and recycle the reclaimed water.

The utility model has the advantages that: has the advantages of compact structure, energy conservation, environmental protection, good decontamination effect and stable recycling.

Drawings

The advantages and mode of realisation of the invention will become more apparent hereinafter by describing in detail the invention with reference to the attached drawings, wherein the content shown in the drawings is only for explaining the invention, without constituting any limitation to the meaning of the invention, in which:

FIG. 1 is a schematic structural diagram of the present invention

In the figure:

1. heat exchanger 2, heat exchange tube inlet 3 and heat exchange tube outlet

4. Sewage inlet 5, sewage outlet 6, heat exchange tube

7. Baffle plate 8, grid adjusting tank 9 and grid

10. An air flotation tank 11, a demulsifier dosing device 12 and a flocculant dosing device

13. Plate-and-frame filter press 14, dissolved air release pipe 15 and dissolved air guide plate

16. An overflow groove 17, an oil residue tank 18 and a biological contact oxidation tank

19. Sedimentation tank 20, sludge tank 21, active carbon filter

Detailed Description

As shown in fig. 1, the utility model relates to a reclaimed water recycling system, which comprises a heat exchange device 1, wherein one side of the heat exchange device 1 is provided with a heat exchange tube inlet 2 and a heat exchange tube outlet 3, the top of the heat exchange device 1 is provided with a sewage inlet 4 near the heat exchange tube inlet 2, the bottom of the heat exchange device 1 is provided with a sewage outlet 5 far away from the heat exchange tube outlet 3, the heat exchange tube 6 is in a rotary design, a plurality of baffle plates 7 are fixed on the inner wall of the heat exchange device 1, and the baffle plates 7 are arranged in cooperation with the heat exchange tube 6; the sewage outlet 5 is communicated with the water inlet of a grid adjusting tank 8, a grid 9 is arranged at the water inlet of the grid adjusting tank 8 and is used for intercepting large floaters and particles, the water outlet of the grid adjusting tank 8 is communicated with an air floating tank 10, the air floating tank 10 adds demulsifier and flocculant into the air floating tank 10 through a demulsifier dosing device 11 and a flocculant dosing device 12, an air dissolving release pipe 14 is arranged inside the air floating tank 10, a plurality of air release holes are uniformly arranged on the air dissolving release pipe 14, an air dissolving guide plate 15 is arranged above the air release holes, the air dissolving guide plate 15 is in a symmetrically arranged tip-top structure, an overflow trough 16 is arranged at the upper side of one end of the air floating tank 10, which is far away from the grid adjusting tank 8, the overflow trough 16 is communicated with an oil residue tank 17 and is used for removing emulsified oil in sewage, the water outlet of the air floating tank 10 is communicated with a biological contact oxidation tank 18, and after the action of microorganisms in the biological contact oxidation tank 18, the water body enters a sedimentation tank 19, is precipitated by the sedimentation tank 19, the precipitate is discharged to a sludge tank 20, the upper water body flows to an activated carbon filter 21 for filtration and then is discharged, the output end of the sludge tank 20 is communicated with a plate-and-frame filter press 13, and sludge is dewatered by the plate-and-frame filter press 13 and then is transported outside a mud cake.

The utility model discloses compact structure, sewage from 4 entering heat transfer device 1 of sewage entry, treat to add the heat exchange tube entry 2 entering heat exchange tube 6 of hot water source, heat exchange tube 6 is gyration shape design, and 1 inner wall of heat transfer device is fixed with a plurality of baffling boards 7, and above-mentioned design has increased the heat transfer route, has increased heat transfer area, and baffling board 7 cooperates heat exchange tube 6 to set up, makes sewage be the contact of advancing formula perpendicularly with heat exchange tube 6, improves heat exchange efficiency, and is energy-concerving and environment-protective. The sewage after heat exchange flows into a grid adjusting tank 8, the grid is used for intercepting large floating objects and particles, and then flows into an air floating tank 10, dissolved air with a large amount of micro-fine bubbles is released through a plurality of air release holes on an air dissolved release pipe 14, the dissolved air is vertically sprayed out from air outlet holes and is guided and released through a pointed top type structure after being mixed with the sewage, the design can effectively weaken the stirring phenomenon of the dissolved air with pressure on water flow after being released, the dissolved air and the sewage can be fully and uniformly mixed in a short time to form a scum layer of a water-air-particle three-phase mixed system, the scum layer floats upwards from the density smaller than that of the water and is discharged to an oil residue tank 17 through an overflow tank 16, simultaneously, emulsified oil in the sewage is efficiently removed through adding a demulsifier and a flocculating agent, and the sewage after separation flows into a biological contact oxidation tank 18 under the action of microorganisms, COD substances in the water are further removed, and then the water is purified by an active carbon filter 21 to remove peculiar smell in the water, further improve the purification treatment effect and recycle the reclaimed water.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims

1. The utility model provides a well water recycling system which characterized in that: the heat exchange device comprises a heat exchange device, wherein a heat exchange tube inlet and a heat exchange tube outlet are formed in one side of the heat exchange device, a sewage inlet is formed in the top of the heat exchange device, close to the heat exchange tube inlet, a sewage outlet is formed in the bottom of the heat exchange device, far away from the heat exchange tube outlet, the heat exchange tube is designed in a rotary shape, a plurality of baffle plates are fixed on the inner wall of the heat exchange device, and the baffle plates are matched with the heat exchange tube; the sewage outlet is communicated with the water inlet of the grid adjusting tank, the water inlet of the grid adjusting tank is provided with a grid for intercepting large floaters and particles, the water outlet of the grid adjusting tank is communicated with the air flotation tank, the air flotation tank adds an emulsion breaker and a flocculating agent into the air flotation tank through an emulsion breaker dosing device and a flocculating agent dosing device, the inner part of the air flotation tank is provided with an air dissolving release pipe, the air dissolving release pipe is uniformly provided with a plurality of air release holes, an air dissolving guide plate is arranged above the air release holes and is of a symmetrically arranged pointed top type structure, the upper side of one end of the air flotation tank, which is far away from the grid adjusting tank, is provided with an overflow groove, the overflow groove is communicated with the oil residue tank and is used for removing emulsified oil in sewage, the water outlet of the air flotation tank is communicated with the biological contact oxidation tank, and after the microbial action of the biological contact oxidation tank, the water body enters a sedimentation tank, is precipitated by the sedimentation tank, the precipitate is discharged to a sludge tank, and the upper water body flows to an active carbon filter to be filtered and then is discharged.

2. The reclaimed water recycling system according to claim 1, wherein: the output end of the sludge pond is communicated with the plate-and-frame filter press, and sludge is dewatered by the plate-and-frame filter press and then is transported outside a sludge cake.