CN216639101U - A remove device that is arranged in organic matter of uranium purification conversion waste water - Google Patents

Abstract

A device for removing organic matter in uranium purification and conversion wastewater belongs to the field of uranium wastewater recycling. The utility model solves the problem that the raffinate waste liquid produced in the uranium purification process contains a small amount of organic phase, which reduces the adsorption effect of the exchange resin and causes the waste liquid treatment result to be substandard. The utility model comprises a pre-separation box, a vacuum separator, a pre-filter, a macromolecular separator and an adsorption filter which are sequentially connected by pipelines. The inlet end of the pre-separation box is connected with a sewage pipeline, and the outlet end of the pre-separation box is also connected with a The dirty oil collection tank is provided with a discharge port on the adsorption filter. Through the device for removing organic matter in uranium purification and conversion wastewater, the organic phase content in the uranium-containing wastewater is reduced to below 1 mg/L, the organic phase in the uranium-containing wastewater is prevented from reducing the adsorption effect of the exchange resin, and the exchange rate is improved. The adsorption effect of resin on uranium ions in uranium-containing wastewater makes the uranium-containing wastewater discharge below the standard value.

Description

A device for removing organic matter in uranium purification and conversion wastewater

technical field

The utility model relates to a device and method for removing organic matter from wastewater, belonging to the field of uranium wastewater recycling.

Background technique

The raffinate waste liquid produced in the extraction and purification production process of uranium purification and conversion production line contains a small amount of organic phase TBP, DPB, MDP and hydrogenated coal organic phase. This waste liquid needs to enter the ion exchange system for further treatment and recovery of metal uranium. to acceptable emission standards. Through experimental research, the organic phase in the waste liquid adheres to the adsorption channel of the exchange resin in the ion exchange system, causing resin poisoning, reducing the resin adsorption effect, and making the waste liquid treatment result substandard. Device for the removal of organic matter in wastewater.

Utility model content

The utility model solves the problem that the raffinate waste liquid produced in the uranium purification process contains a small amount of organic phase, which reduces the adsorption effect of the exchange resin and causes the treatment result of the waste liquid to be substandard. Removal of organic matter in wastewater". A brief summary of the invention is given below in order to provide a basic understanding of certain aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or essential parts of the present invention, nor is it intended to limit the scope of the present invention.

The technical scheme of the present utility model:

A device for removing organic matter in uranium purification and conversion wastewater, comprising a pre-separation box, a vacuum separator, a pre-filter, a polymer separator and an adsorption filter which are sequentially connected through pipelines, and the inlet end of the pre-separation box is connected with sewage The outlet end of the pre-separation box is also connected with a dirty oil collection box, and the adsorption filter is provided with a discharge port.

Further, the outlet end of the vacuum separator is connected with an organic phase collection chamber, the outlet end of the organic phase collection chamber is communicated with a dirty oil collection tank, and an organic phase discharge pump is installed between the organic phase collection chamber and the dirty oil collection tank.

Further, a water delivery pump is installed between the vacuum separator and the pre-filter.

Further, the adsorption filter is provided with a backwashing gas inlet and a backwashing water inlet, and the backwashing gas inlet is connected to the adsorption filter, the polymer separator, the prefilter and the preseparation box in turn through a pipeline, and the backwashing water inlet is connected in turn. The adsorption filter, the macromolecule separator, the pre-filter and the pre-separation box are connected in sequence through the pipeline.

Further, the polymer separators are provided with two groups, and the two groups of polymer separators are arranged in parallel, and the adsorption filters are provided with two groups, and the two groups of adsorption filters are arranged in parallel.

Further, the pre-separation box includes a first chamber, a second chamber and a third chamber, the bottoms of the first chamber, the second chamber and the third chamber are respectively provided with drain valves, and the second chamber respectively communicate with the first chamber and the third chamber.

Further, the first chamber is a natural sedimentation chamber, the second chamber is a honeycomb inclined tube sedimentation chamber, a honeycomb inclined tube is arranged in the second chamber, and the outlet end of the sewage pipe is arranged in the middle of the first chamber.

Further, an oil level electrode is installed in the pre-separation box, and an ultrasonic level gauge is arranged on the pre-separation box.

The beneficial effects of the present utility model:

1. a kind of removal device for organic matter in uranium purification and conversion wastewater of the present invention is suitable for uranium-containing wastewater containing more organic matter containing uranium, the organic phase in the uranium-containing wastewater can be removed, and the organic matter content in the uranium-containing wastewater can be removed. When it reaches 1 mg/L, the poisoning of the ion exchange resin in the subsequent process is reduced, which is beneficial to improve the adsorption efficiency of the ion exchange resin for uranium in the uranium-containing wastewater, so that the uranium-containing wastewater can be discharged up to the standard;

2. The pre-separation box of the present utility model passes the collected waste water through the natural sedimentation chamber and the honeycomb inclined tube sedimentation chamber in turn, separates the solid particles and the organic phase in the waste water in the natural sedimentation chamber in the chamber, and then passes through the honeycomb inclined tube sedimentation chamber. Rapid separation of free organic phase and suspended organic phase in wastewater, and pre-classified pre-separation of organic phase and impurities in uranium-containing wastewater;

3. The suitable temperature and vacuum degree are matched in the vacuum separator of the present utility model, which can destroy the surface tension, realize demulsification, and realize the separation of organic phase in water and water in organic phase;

4. In the polymer separator, tiny oil particles are adsorbed on the crisscross ultrafine fibers. With the increase of tiny organic phase molecules on the fibers, many small organic phase molecules attract each other and aggregate into larger oil. When the oil particles gather to a certain large diameter, under the action of the gravity difference between the oil and the water, the large oil droplets will release the shackles of the fibers and float up to realize the separation of oil and water. The crisscross filaments of the polymer adsorption filter element form a deep filter screen, which can filter and separate the suspended impurities in the water at the same time.

Description of drawings

1 is a schematic diagram of a device for removing organics in uranium purification and conversion wastewater;

Figure 2 is a schematic diagram of the internal structure of the pre-separation box.

In the figure 1- sewage pipeline, 2- pre-separation box, 3- vacuum separator, 4- conveying pump, 5- pre-filter, 6- polymer separator, 7- adsorption filter, 8- organic phase chamber, 9- Discharge organic phase pump, 10- Slop oil collection tank, 11- Discharge port, 12- Back flush gas inlet, 13- Back flush water inlet, 14- First chamber, 15- Second chamber, 16- No. Three chambers, 17- oil level electrode, 18- ultrasonic level gauge, 19- drain valve.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present utility model more clear, the present utility model will be described below through the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are exemplary and not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.

Embodiment 1: This embodiment is described with reference to FIG. 1 . A device for removing organics in uranium purification and conversion wastewater according to this embodiment includes a pre-separation box 2 , a vacuum separator 3 , and a pre-filter that are sequentially connected by pipelines 5. The polymer separator 6 and the adsorption filter 7, the inlet end of the pre-separation box 2 is connected with the sewage pipeline 1, the outlet end of the pre-separation box 2 is also connected with the dirty oil collection box 10, and the adsorption filter 7 is provided with a discharge Port 11, the uranium-containing wastewater containing the organic phase is first pre-separated by the pre-separation box 2 to separate and filter the organic phase and large-particle impurities in the wastewater, and the wastewater separated by the pre-separation box 2 flows into the vacuum separation through the pipeline. In the device 3, through the vacuum separator 3, the vacuum separator 3 is composed of a vacuum gravity separation chamber and a bellows plate group separation chamber, the separated organic phase enters the organic phase collecting chamber 8, and provides power through the organic phase discharge pump 9 It is output to the sewage oil collection tank 10 for temporary storage. The uranium-containing waste water filtered by the vacuum separator 3 flows into the pre-filter 5 through the conveying pump 4 for pre-filtration, and the filtered uranium-containing waste water is separated by two groups of parallel polymers. Filter 6 and two sets of parallel adsorption filters 7 are adsorbed and filtered, and then discharged through the discharge port 11 and the organic phase content in the wastewater is detected. If the organic phase content in the wastewater is detected to be less than 1 mg/L, the uranium-containing phase can be removed by the exchange resin. Uranium in wastewater is treated by adsorption.

Specific embodiment 2: This embodiment is described with reference to FIG. 1 . In this embodiment, a device for removing organic matter in uranium purification and conversion wastewater is provided. The adsorption filter 7 is provided with a backwash gas inlet 12 and a backwash water inlet. 13. The backwash gas inlet 12 is sequentially connected to the adsorption filter 7, the polymer separator 6, the prefilter 5 and the preseparation box 2 through the pipeline, and the backwash water inlet 13 is sequentially connected to the adsorption filter 7 and the polymer separator through the pipeline. 6. Pre-filter 5 and pre-separation box 2, when the removal device filters uranium-containing wastewater for many times, the impurities in pre-separation box 2, pre-filter 5, polymer separator 6 and adsorption filter 7 are relatively low. It needs to be flushed with clean water and gas, and an appropriate amount of clean water is added to the backwash inlet 13, and the clean water flows into the adsorption filter 7, the polymer separator 6, the pre-filter 5 and the pre-separation box 2 through the pipeline in turn. Rinse, clean the organic phase and impurities in the equipment, and then input gas into the backflushing gas inlet 12, and the gas passes through the pipeline to the adsorption filter 7, the polymer separator 6, the pre-filter 5 and the pre-separation box 2. Wash and dry.

Specific Embodiment 3: This embodiment is described with reference to FIG. 2 . In this embodiment, a device for removing organic matter in uranium purification and conversion wastewater is used. The pre-separation tank 2 includes a first chamber 14 , a second chamber 15 and The third chamber 16, the first chamber 14, the second chamber 15 and the bottom of the third chamber 16 are respectively provided with a blowdown valve 19, the second chamber 15 communicates with the first chamber 14, and the second chamber 15 Connected with the third chamber 16, the first chamber 14 is a natural sedimentation chamber, the uranium-containing wastewater is input from the middle of the first chamber 14 for first-level pre-separation, and sedimentation and separation are performed in the first chamber 14, and the separated The organic phase rises and suspends in the upper part of the first chamber 14, the large particles of impurities in the wastewater settle to the bottom of the first chamber 14, and the first chamber 14 is drained by opening the blowdown valve 19 at the bottom of the first chamber 14, The wastewater after sedimentation and separation in the first chamber 14 flows in from the bottom of the second chamber 15. The second chamber 15 is a honeycomb inclined tube sedimentation chamber. The phase particles realize the polymerization and increase, so that the free organic phase and the suspended organic phase in the wastewater can be quickly separated to achieve secondary pre-separation. The uranium-containing wastewater after secondary pre-separation flows into the third chamber 16 through the top, and passes through the pipeline Flow into the vacuum separator 3, the organic phase floating on the upper part of the pre-separator 2 flows into the sewage oil collection tank 10 through the pipeline for temporary storage, and the oil level electrode 17 in the pre-separator 2 is used to measure the organic phase in the pre-separation tank 2. The liquid level in the pre-separation tank 2 is measured by the ultrasonic liquid level gauge 18 arranged above the pre-separator 2 to prevent the liquid level in the pre-separation tank 2 from being too high to flow out of the pre-separation tank 2 .

Embodiment 4: This embodiment is described with reference to FIG. 1 to FIG. 2 . A method for removing organic matter in uranium purification and conversion wastewater according to this embodiment includes the following steps:

Step 1: The sewage flows into the pre-separation box 2 through the sewage pipeline 1, and the organic phase separated after the pre-treatment in the pre-separation box 2 is discharged into the sewage oil collection box 10 for storage through the pipeline. The waste water separated by the pre-separation box 2 into the vacuum separator 3;

Step 2: The waste water treated by the pre-separation box 2 enters the vacuum separator 3 for vacuum separation. The vacuum separator 3 separates the organic phase in the waste water into the organic phase collecting chamber 8, and the waste water after vacuum separation flows into the pre-separator through the pipeline. In the filter 5, the vacuum separator 3 is matched with suitable temperature and vacuum degree, which can destroy the surface tension to achieve demulsification, and realize the separation of the organic phase in water and the water in organic phase;

Step 3: The organic phase in the organic phase collection chamber 8 is transported to the dirty oil collection tank 10 by the organic phase discharge pump 9 for storage, and the waste water filtered by the prefilter 5 flows through the polymer separator 6 and adsorption filtration through the pipeline. Adsorption filtration is carried out in the device 7;

Step 4: The organic matter content of the wastewater after adsorption and filtration by the polymer separator 6 and the adsorption filter 7 is less than 1 mg/L, and it is discharged through the discharge port 11. On the filaments, with the increase of tiny organic phase molecules on the filaments, many small organic phase molecules attract each other and aggregate into larger oil particles. , the large oil droplets will be freed from the shackles of fibers and float up to achieve the separation of oil and water. The crisscross filaments of the polymer adsorption filter element form a deep filter, which can filter and separate the suspended impurities in the water at the same time;

Step 5: Pour clean water into the backwash water inlet 13, the clean water flushes the pre-separation box 2, the prefilter 5 and the polymer separator 6 through the pipeline, and gas is introduced into the backwash gas inlet 12, and the gas passes through the pipeline Rinse the pre-separation box 2, the pre-filter 5 and the polymer separator 6;

The specific steps of the sewage in the pre-separation box 2 in step 1 are as follows: the sewage enters the first chamber 14 of the pre-separation box 2 for natural sedimentation, and the solid particles in the sewage are deposited on the bottom of the first chamber 14 and pass through the sewage valve. 19 is discharged, the organic phase in the sewage is suspended to the upper part of the first chamber 14, the naturally settled sewage flows out through the upper part of the first chamber 14 and then flows into the bottom of the second chamber 15, and passes through the honeycomb of the second chamber 15. The inclined tube filters the impurities, the honeycomb inclined tube quickly separates the free organic phase and the suspended organic phase in the sewage, the filtered impurities are discharged through the sewage valve 19 at the bottom of the second chamber 15, and the waste water flows into the top of the second chamber 15. In the third chamber 16 , the waste water in the third chamber 16 is discharged into the vacuum separator 3 through the pipeline, and the impurities are discharged from the sewage valve 19 at the bottom of the third chamber 16 .

This embodiment is only an exemplary description of this patent, and does not limit its protection scope. Those skilled in the art can also make partial changes to it, as long as it does not exceed the spirit of this patent, it is within the protection scope of this patent.

Claims (8)

1. a removal device for organic matter in uranium purification and conversion waste water, is characterized in that: comprise the pre-separation box (2), vacuum separator (3), pre-filter (5), macromolecular separation tank (2) connected by pipeline successively Filter (6) and adsorption filter (7), the inlet end of the pre-separation box (2) is connected with a sewage pipeline (1), and the outlet end of the pre-separation box (2) is also connected with a dirty oil collection box (10), and the adsorption A discharge port (11) is provided on the filter (7). 2. A device for removing organic matter in uranium purification and conversion wastewater according to claim 1, characterized in that: the outlet end of the vacuum separator (3) is connected with an organic phase chamber (8), which collects organic The outlet end of the phase chamber (8) is communicated with the dirty oil collecting tank (10), and an organic phase discharging pump (9) is installed between the organic phase collecting chamber (8) and the dirty oil collecting tank (10). 3. a kind of device for removing organic matter in uranium purification and conversion waste water according to claim 2, is characterized in that: between the described vacuum separator (3) and the pre-filter (5), a water delivery pump (4) is installed ). 4. A device for removing organic matter in uranium purification and conversion wastewater according to claim 3, wherein the adsorption filter (7) is provided with a backwash gas inlet (12) and a backwash water inlet (13), the backwash gas inlet (12) is connected to the adsorption filter (7), the polymer separator (6), the prefilter (5) and the preseparation box (2) in sequence through the pipeline, and the backwash water inlet (13) ) are sequentially connected to the adsorption filter (7), the polymer separator (6), the pre-filter (5) and the pre-separation box (2) through a pipeline. 5. A device for removing organic matter in uranium purification and conversion wastewater according to claim 4, characterized in that: the polymer separator (6) is provided with two groups, and two groups of polymer separators (6) In parallel arrangement, the adsorption filters (7) are provided with two groups, and the two groups of adsorption filters (7) are arranged in parallel. 6. The device for removing organics in uranium purification and conversion wastewater according to any one of claims 1-5, characterized in that: the pre-separation box (2) comprises a first chamber (14), a first chamber (14), a The second chamber (15) and the third chamber (16), the bottoms of the first chamber (14), the second chamber (15) and the third chamber (16) are respectively provided with a drain valve (19), The second chamber (15) communicates with the first chamber (14) and the third chamber (16) respectively. 7. A device for removing organic matter in uranium purification and conversion wastewater according to claim 6, characterized in that: the first chamber (14) is a natural sedimentation chamber, and the second chamber (15) is a honeycomb In the inclined tube sedimentation chamber, a honeycomb inclined tube is arranged in the second chamber (15), and the outlet end of the sewage pipe (1) is arranged in the middle of the first chamber (14). 8. A device for removing organics in uranium purification and conversion wastewater according to claim 7, characterized in that: an oil level electrode (17) is installed in the pre-separation box (2), and the pre-separation box (2) is provided with an oil level electrode (17). ) is provided with an ultrasonic level gauge (18).

Images