CN213652161U

CN213652161U - High saline and alkaline sewage's purification unit

Info

Publication number: CN213652161U
Application number: CN202021316735.2U
Authority: CN
Inventors: 王洪银; 万寿福
Original assignee: Tianjin Kuoxi Environmental Protection Technology Co ltd
Current assignee: Tianjin Kuoxi Environmental Protection Technology Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-07-09
Anticipated expiration: 2031-03-11

Abstract

The utility model belongs to the technical field of sewage treatment, in particular to a purification treatment device for high saline-alkali sewage, which comprises a dosing device, wherein the dosing device is connected with a precipitation device through a pipeline, the precipitation device is connected with a first filter through a pipeline, the first filter is connected with a neutralization device through a pipeline, the neutralization device comprises a tank body, a first stirring device and a carbon dioxide release device are arranged in the tank body, the carbon dioxide release device is connected with a gas tank through a pipeline, the neutralization device is connected with a second filter through a pipeline, the second filter is connected with a flash evaporation device through a pipeline, the flash evaporation device comprises a shell, the top end of the shell is connected with a vacuum tube, the vacuum tube is connected with a vacuum pump, a heat transfer pipeline is arranged in the shell, the inlet of the heat transfer pipeline is connected with a steam generation device, the, the collecting part is provided with a discharging pipe, the utility model has the advantages of thorough treatment and convenient use.

Description

High saline and alkaline sewage's purification unit

Technical Field

The utility model belongs to the technical field of sewage treatment, concretely relates to purification unit of high saline and alkaline sewage.

Background

In recent years, with the rapid development of industries such as petrochemical industry, electric power industry, metallurgy industry, coal chemical industry and the like, the amount of waste water with complex components generated in industrial production is increasing continuously, the problem of how to treat and utilize the waste water with complex components is paid extensive attention, and how to utilize the waste water has important significance for protecting the surrounding environment and natural water body where people live, further improving the comprehensive utilization rate of water resources and relieving the water resource shortage.

High saline-alkali sewage is always a difficult point in the field of sewage treatment, the concentration of pollutants in the sewage is high, the toxicity is high, the pollutants have toxic and inhibition effects on water treatment microorganisms, a plurality of technical processes are difficult to reach the standard, even a small amount of technical means reach the standard, the treatment cost is high, the sewage chemical treatment method is a sewage treatment method for separating and removing the pollutants in a dissolved and colloidal state in the sewage or converting the pollutants into harmless substances through chemical reaction and mass transfer action, but a large amount of chemical reaction substances are needed in the treatment process, other pollution problems are generated in the sewage treatment process, the aim of treating the sewage cannot be completely achieved, only an active carbon adsorption method, an ion exchange method and the like can be used, the cost of the methods is high, more solid waste is generated, and the problems of regenerating the sewage and the like exist.

Disclosure of Invention

The to-be-solved problem of the utility model is to provide a high saline and alkaline sewage's purification unit who can clear up impurity in the waste water many times, thoroughly handle sewage.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a purification unit of high saline and alkaline sewage, includes charge device, charge device pipe connection has the sediment device, sediment device pipe connection has first filter, first filter pipe connection has neutralization apparatus, neutralization apparatus pipe connection has the second filter, second filter pipe connection has flash distillation plant.

Further, the neutralization apparatus comprises a tank body, a first stirring device and a carbon dioxide release device are arranged in the tank body, and a pipeline of the carbon dioxide release device is connected with a gas tank.

Further, the carbon dioxide release device comprises an air disc, the air disc is arranged at the bottom of the tank body and is connected with the air tank pipeline through an air pipe, spray heads are uniformly distributed on the air disc, and the air pipe is provided with a check valve.

Further, first agitating unit includes first motor, first motor is located jar body upper end, first motor is equipped with first (mixing) shaft, first (mixing) shaft is equipped with first stirring vane.

Further, the sedimentation device is provided with a second stirring device, the second stirring device comprises a second motor, the second motor is provided with a second stirring shaft, the second stirring shaft is provided with a second stirring blade and a third stirring blade, and the third stirring blade is arranged at the bottom end of the sedimentation device.

Further, the sediment device is equipped with the scrubbing pipe, the scrubbing union coupling has the cleaning box, the cleaning box is equipped with the back flow, the back flow with sediment device is connected.

Furthermore, a baffle is arranged at one end of the return pipe close to the cleaning box, and the top end of the baffle is higher than the return pipe.

Further, the flash evaporation device comprises a shell, a vacuum pipe is connected to the top end of the shell, the vacuum pipe is connected with a vacuum pump, a heat transfer pipeline is arranged in the shell, a steam generation device is connected to an inlet of the heat transfer pipeline, a water tank is connected to an outlet of the heat transfer pipeline, a feed pipe is arranged on the shell, a feed nozzle is arranged at the end of the feed pipe, a collection portion is arranged at the lower end of the shell, a discharge pipe is arranged on the collection portion, and the discharge pipe is connected with the dosing device through a pipeline.

Furthermore, a heat exchange plate is arranged in the shell, and a heat exchange pipe connected with the heat transfer pipeline is arranged in the heat exchange plate.

Furthermore, the inner diameter of the heat exchange tube is smaller than that of the heat transfer pipeline, and the heat exchange plate is wavy.

Compared with the prior art, the utility model has the advantages and positive effect be:

the utility model can add flocculating agent, disinfectant and other agents into the sewage through the drug adding device; the precipitation device precipitates most of salt in the sewage under the action of water flow and stirring, and primary desalination is carried out; removing mixed sediment in the sewage by a first filter; the neutralization device can dissolve carbon dioxide in water to form carbonic acid and dissociate hydrogen ions to neutralize with alkaline sewage by adding carbon dioxide, so that the pH value of the sewage is reduced; the second filter can filter salt ions separated out after the pH value of the sewage is reduced; the flash evaporation device can evaporate water in the sewage by adopting a low-temperature evaporation method so as to realize high desalination; the sewage treatment device has the advantages that the sewage treatment device can effectively treat sewage step by step, salt in the sewage can be removed through the cooperation between the structures, the pH value of the sewage is reduced, the utilization efficiency of the sewage is improved, and the needs of users can be met.

And through the effect of back flow, baffle, discharging pipe and clearance case, can reduce the loss of moisture in the sewage to reach the purpose of environmental protection throttle, high-usage.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a cross-sectional view of the settling device of the present invention;

fig. 3 is a cross-sectional view of the neutralization apparatus of the present invention;

fig. 4 is a cross-sectional view of the flash evaporation apparatus of the present invention.

In the figure: a dosing device-1, a precipitation device-2, a first filter-3, a neutralization device-4, a second filter-5, a flash evaporation device-6, a tank body-7, a first stirring device-8, a carbon dioxide release device-9, a gas tank-10, a gas disc-11, a gas pipe-12, a spray head-13, a check valve-14, a first motor-15, a first stirring shaft-16, a first stirring blade-17, a second motor-18, a second stirring shaft-19, a heat exchange pipe-20, a third stirring blade-21, a decontamination pipe-22, a cleaning box-23, a return pipe-24, a baffle-25, a shell-26, a vacuum pipe-27, a vacuum pump-28, a heat transfer pipeline-29, a heat exchange pipe-21, a heat exchange pipe-, A steam generating device-30, a water tank-31, a feeding pipe-32, a feeding spray head-33, a collecting part-34, a discharging pipe-35, a heat exchange plate-36, a second stirring device-37 and a second stirring blade-38.

Detailed Description

For a better understanding of the present invention, the following further description is given in conjunction with the following embodiments and accompanying drawings.

As shown in figures 1-4, a purification treatment device for high saline-alkali sewage, which comprises a dosing device 1, wherein the dosing device 1 can add flocculating agent, disinfectant and other agents into the sewage, the dosing device 1 is connected with a precipitation device 2 through a pipeline, the precipitation device 2 can precipitate most of salt under the action of water flow and stirring, preliminary desalination is carried out, the precipitation device 2 is connected with a first filter 3 through a pipeline, the sewage after preliminary desalination passes through the first filter 3 to remove the mixed precipitate in the sewage, the first filter 3 is connected with a neutralization device 4 through a pipeline, the neutralization device 4 can be added with carbon dioxide to dissolve the carbon dioxide in water to form carbonic acid and dissociate hydrogen ions to be neutralized with the alkaline sewage, the pH value of the sewage is reduced, the neutralization device 4 is connected with a second filter 5 through a pipeline, the second filter 5 can filter out the salt ions after the pH value of the sewage is reduced, the second filter 5 is connected with a flash evaporation device 6 through a pipeline, and the flash evaporation device 6 can evaporate water in the sewage by adopting a low-temperature evaporation method, so that the high-degree desalination is realized.

The neutralizing device 4 comprises a tank 7, a first stirring device 8 and a carbon dioxide releasing device 9 are arranged in the tank 7, the first stirring device 8 comprises a first motor 15, the first motor 15 is arranged at the upper end of the tank 7, the first motor 15 is provided with a first stirring shaft 16, the first stirring shaft 16 is provided with a first stirring blade 17, the carbon dioxide releasing device 9 is connected with a gas tank 10 through a pipeline, the carbon dioxide releasing device 9 comprises a gas disc 11, the gas disc 11 is arranged at the bottom of the tank 7, the gas disc 11 is connected with the gas tank 10 through a gas pipe 12, nozzles 13 are uniformly distributed on the gas disc 11, the gas pipe 12 is provided with a check valve 14, carbon dioxide can be sprayed out through the gas disc 11 and moves upwards, the first stirring device 8 can uniformly mix the carbon dioxide and sewage, so that the carbon dioxide can be dissolved in the sewage to the maximum extent, the pH value of the sewage is reduced until the, the check valve 14 provided on the air pipe 12 can prevent reverse flow of the sewage.

Deposit device 2 and be equipped with second agitating unit 37, second agitating unit 37 includes second motor 18, second motor 18 is equipped with second (mixing) shaft 19, second (mixing) shaft 19 is equipped with second stirring vane 38 and third stirring vane 21, third stirring vane 21 is located the bottom of depositing device 2, it can make sewage deposit most salt under rivers and the effect of stirring to deposit device 2, carry out preliminary desalination, second stirring vane 38 can accelerate the mixture of salt ion in medicament and the sewage, thereby accelerate precipitation efficiency, third stirring vane 21 can stir the sediment of depositing device 2 bottom, prevent its adhesion at the inner wall or the bottom of depositing device 2.

Deposit device 2 and be equipped with scrubbing pipe 22, scrubbing pipe 22 is connected with cleaning box 23, cleaning box 23 is equipped with back flow 24, back flow 24 is connected with depositing device 2, the sediment of depositing 2 bottoms of device, can flow into cleaning box 23 through scrubbing pipe 22, and deposit at cleaning box 23 stewing, and convey back through back flow 24 the sewage on cleaning box 23 upper strata and deposit in device 2, cleaning box 23's setting, can be convenient for deposit the discharge in device 2, thereby can reduce the precipitation density in the sewage, alleviate the filter pressure of first filter 3.

The end of the return pipe 24 close to the cleaning box 23 is provided with a baffle 25, the top end of the baffle 25 is higher than the return pipe 24, the baffle 25 can play a role in improving the liquid level of the return pipe, and a standing and settling method is adopted in the cleaning box 23, so that the part of the sewage with higher liquid level contains less precipitated impurities, and the reduction of the precipitation and return rate of the sewage can be ensured.

The flash evaporation device 6 comprises a shell 26, a vacuum tube 27 is connected to the top end of the shell 26, the vacuum tube 27 is connected with a vacuum pump 28, a heat transfer pipeline 29 is arranged in the shell 26, a steam generation device 30 is connected to the inlet of the heat transfer pipeline 29, a water tank 31 is connected to the outlet of the heat transfer pipeline 29, a heat exchange plate 36 is arranged in the shell 26, a heat exchange tube 20 connected with the heat transfer pipeline 29 is arranged in the heat exchange plate 36, the inner diameter of the heat exchange tube 20 is smaller than the inner diameter of the heat transfer pipeline 29, the heat exchange plate 36 is in a wave shape, a feed tube 32 is arranged on the shell 26, a feed nozzle 33 is arranged at the end of the feed tube 32, a collection part 34 is arranged at the lower end of the shell 26, a discharge tube 35 is arranged on the collection part 34, the discharge tube 35 is in pipeline connection with the dosing device 1, moisture, then, sewage sprayed by the feeding nozzle 33 is drained through the heat exchange plate 36, the heat exchange plate 36 can increase the heat exchange efficiency between the sewage and the heat transfer pipeline 29, water is gradually evaporated, residual salt in the sewage is concentrated and flows into the collecting part 34, and finally the residual salt flows back to the dosing device 1 through the discharging pipe 35 to be recycled.

The working process of the utility model is as follows:

when in use, the chemical agents such as flocculating agent and disinfectant can be added into the sewage through the chemical adding device 1, the instant local precipitation occurs in the sewage, the sewage is quickly conveyed into the precipitation device 2, most of salt is precipitated under the action of water flow and stirring, the preliminary desalination is carried out, the mixing of the chemical agents and the salt ions in the sewage can be accelerated by the second stirring blades 38, the precipitation efficiency is accelerated, the precipitate is precipitated to the bottom of the precipitation device 2 and flows into the cleaning box 23 through the decontamination pipe 22, the standing precipitation is carried out in the cleaning box 23, when the liquid level in the cleaning box 23 is higher than the baffle 25, the sewage with less precipitated impurities in the part with higher liquid level is conveyed back into the precipitation device 2 again, the loss is reduced, the sewage after the preliminary desalination passes through the first filter 3, the precipitate mixed in the sewage is removed, and then enters the neutralization device 4, and the air disk 11 in the neutralization device 4 continuously sprays carbon dioxide, and moving upwards, the first stirring device 8 can uniformly mix carbon dioxide and sewage to dissolve the carbon dioxide in water to form carbonic acid and dissociate hydrogen ions to neutralize alkaline sewage, the pH value of the sewage is reduced until the sewage is alkalescent or neutral, salt ions separated out after the pH value of the sewage is reduced by filtering through the second filter 5 are evaporated out through the flash evaporation device 6, and then water in the sewage is evaporated out to be highly desalted, the water in the sewage sprayed out through the feeding spray nozzle 33 can be continuously evaporated under the state of low pressure and negative pressure of the vacuum pump 28 to evaporate the water in the sewage and is pumped out and collected through the vacuum pump 28, then the sewage sprayed out from the feeding spray nozzle 33 is drained through the heat exchange plate 36, and the heat exchange plate 36 can increase the heat exchange efficiency of the sewage and the heat transfer pipeline 29, the water is gradually evaporated to concentrate the residual salt in the sewage, and flows into the collecting portion 34 and finally back to the dosing device 1 through the outlet pipe 35 for recirculation.

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 purification unit of high saline and alkaline sewage, includes charge device (1), its characterized in that: the chemical dosing device is characterized in that a pipeline of the chemical dosing device (1) is connected with a precipitation device (2), the pipeline of the precipitation device (2) is connected with a first filter (3), the pipeline of the first filter (3) is connected with a neutralization device (4), the pipeline of the neutralization device (4) is connected with a second filter (5), and the pipeline of the second filter (5) is connected with a flash evaporation device (6).

2. The apparatus for purifying and treating high saline-alkali wastewater according to claim 1, wherein: the neutralizing device (4) comprises a tank body (7), a first stirring device (8) and a carbon dioxide releasing device (9) are arranged in the tank body (7), and a gas tank (10) is connected to the carbon dioxide releasing device (9) through a pipeline.

3. The apparatus for purifying and treating high saline-alkali wastewater according to claim 2, wherein: carbon dioxide release (9) are including gas dish (11), gas dish (11) are located jar body (7) bottom, gas dish (11) pass through trachea (12) with gas pitcher (10) pipe connection, shower nozzle (13) have evenly been laid in gas dish (11), trachea (12) are equipped with check valve (14).

4. The apparatus for purifying and treating high saline-alkali wastewater according to claim 2, wherein: first agitating unit (8) include first motor (15), first motor (15) are located jar body (7) upper end, first motor (15) are equipped with first (mixing) shaft (16), first (mixing) shaft (16) are equipped with first stirring vane (17).

5. The apparatus for purifying and treating high saline-alkali wastewater according to claim 1, wherein: the sedimentation device (2) is provided with a second stirring device (37), the second stirring device (37) comprises a second motor (18), the second motor (18) is provided with a second stirring shaft (19), the second stirring shaft (19) is provided with a second stirring blade (38) and a third stirring blade (21), and the third stirring blade (21) is arranged at the bottom end of the sedimentation device (2).

6. The apparatus for purifying and treating high saline-alkali wastewater according to claim 1, wherein: the sedimentation device (2) is provided with a decontamination pipe (22), the decontamination pipe (22) is connected with a cleaning box (23), the cleaning box (23) is provided with a return pipe (24), and the return pipe (24) is connected with the sedimentation device (2).

7. The apparatus for purifying and treating high saline-alkali wastewater according to claim 6, wherein: one end of the return pipe (24) close to the cleaning box (23) is provided with a baffle plate (25), and the top end of the baffle plate (25) is higher than the return pipe (24).

8. The apparatus for purifying and treating high saline-alkali wastewater according to claim 1, wherein: the flash evaporation device (6) comprises a shell (26), a vacuum tube (27) is connected to the top end of the shell (26), a vacuum pump (28) is connected to the vacuum tube (27), a heat transfer pipeline (29) is arranged in the shell (26), a steam generating device (30) is connected to an inlet of the heat transfer pipeline (29), a water tank (31) is connected to an outlet of the heat transfer pipeline (29), a feeding tube (32) is arranged on the shell (26), a feeding spray head (33) is arranged at the end of the feeding tube (32), a collecting portion (34) is arranged at the lower end of the shell (26), a discharging tube (35) is arranged on the collecting portion (34), and the discharging tube (35) is in pipeline connection with the dosing device (1).

9. The apparatus for purifying and treating high saline-alkali wastewater according to claim 8, wherein: a heat exchange plate (36) is arranged in the shell (26), and a heat exchange pipe (20) connected with the heat transfer pipeline (29) is arranged in the heat exchange plate (36).

10. The apparatus for purifying and treating high saline-alkali wastewater according to claim 9, wherein: the inner diameter of the heat exchange tube (20) is smaller than that of the heat transfer pipeline (29), and the heat exchange plate (36) is wavy.