Oil-containing mine water treatment equipment

Abstract

The utility model provides oil-containing mine water treatment equipment, and belongs to the technical field of wastewater treatment. The oil-containing mine water treatment equipment comprises an adjusting tank connected with mine water, a primary sedimentation tank connected with the adjusting tank, an integrated water purifier connected with the primary sedimentation tank, a middle water tank connected with the integrated water purifier, coagulation air floatation equipment connected with the middle water tank, and a walnut shell filter connected with the coagulation air floatation equipment, the self-cleaning filter is connected with the walnut shell filter, the ultrafiltration equipment is connected with the self-cleaning filter, and the clean water tank is connected with the ultrafiltration equipment. The oil-containing mine water treatment device is used for effectively treating organic pollutants in oil-containing mine water, and has stronger impact load resistance.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, and particularly relates to an oily mine water treatment device. Background Art

[0002] Coal mine mine water mainly comes from groundwater that enters the roadway due to mining influence. The quality of mine water mainly depends on the original quality of groundwater and is affected by coal dust, rock dust in the roadway, and grease, emulsion, waste, and human excrement discharged during mining activities.

[0003] During the coal mining process, it is inevitable to mix emulsified oil, waste oil, etc. into the mine water, resulting in the presence of organic matter in the mine water. These organic matters have a lower density than water, and the conventional water treatment technology of coagulation → sedimentation → filtration has poor removal effect on the organic matter in the mine water. Summary of the Utility Model

[0004] In view of this, the technical problem to be solved by the utility model is to provide an oily mine water treatment device to effectively treat the organic pollutants in the oily mine water in view of the deficiencies of the prior art.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: an oily mine water treatment device, including: an adjustment tank connected to the mine water, a primary sedimentation tank connected to the adjustment tank, an integrated water purifier connected to the primary sedimentation tank, an intermediate water tank connected to the integrated water purifier, a coagulation air flotation device connected to the intermediate water tank, a walnut shell filter connected to the coagulation air flotation device, a self-cleaning filter connected to the walnut shell filter, an ultrafiltration device connected to the self-cleaning filter, and a clear water tank connected to the ultrafiltration device.

[0006] Optionally, the mine water is connected to the adjustment tank through a first lift pump. The first lift pump is provided with a bypass pipeline, and the bypass pipeline is connected to an accident tank. The accident tank is connected to the adjustment tank through a second lift pump.

[0007] Optionally, the primary sedimentation tank is connected to a first chemical dosing device, and a flocculant and a coagulant aid are arranged in the first chemical dosing device.

[0008] Optionally, the integrated water purifier is an FJ type integrated water purifier.

[0009] Optionally, the coagulation air flotation device is connected to a second chemical dosing device, and a demulsifier, a flocculant, and a coagulant aid are arranged in the second chemical dosing device.

[0010] Optionally, the intermediate water tank is connected to the integrated water purifier through a backwashing pipeline.

[0011] Optionally, the sludge generated by the primary sedimentation tank, the backwash drainage generated by the integrated water purifier, the sludge and scum generated by the coagulation flotation equipment, the backwash drainage generated by the walnut shell filter, the drainage generated by the self-cleaning filter, and the backwash drainage generated by the ultrafiltration equipment are respectively connected to the sludge thickening tank.

[0012] Optionally, the effluent of the walnut shell filter is connected to the biological aerated filter, and the effluent of the biological aerated filter is connected to the self-cleaning filter.

[0013] Optionally, the backwash drainage generated by the biological aerated filter is connected to the sludge thickening tank.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The present utility model optimizes the treatment system comprehensively according to the characteristics of specific pollutants in the oily mine water, so as to efficiently remove the organic pollutants in the oily mine water and take into account the shock load resistance of the system at the same time.

[0016] First, the concentration of organic pollutants (COD cr ) in the mine water is closely related to the concentration of petroleum substances. The treatment system of the present utility model, which is "regulation tank - primary sedimentation tank - integrated water purifier - intermediate water tank - walnut shell filter - self-cleaning filter - ultrafiltration equipment", can not only remove the suspended solids and petroleum pollutants in the water, but also remove the dissolved and colloidal pollutants in the water, ensuring that the suspended solids, petroleum substances and COD cr in the effluent meet the discharge standards.

[0017] Secondly, the water quality and quantity of the mine water are volatile, and the treatment equipment fully considers the shock load of the water quality and quantity on the system. In the original treatment system, the volume of the regulation tank is small and the residence time is short. When the water quantity increases, the load of each section will increase, reducing the pollutant removal efficiency. After improvement, the present utility model adds an accident tank with a certain effective volume, which can effectively alleviate the problem of uneven water quantity and reduce the shock load of the subsequent sections. Moreover, transition water tanks are arranged between each section and operate independently without interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 : Structural schematic diagram of a device for treating oily mine water in Embodiment 1 of the present utility model;

[0020] Figure 2 : Structural schematic diagram of an oily mine water treatment device in Embodiment 2 of the present utility model;

[0021] Among them, 1. Regulation tank; 2. Primary sedimentation tank; 3. Integrated water purifier; 4. Intermediate water tank; 5. Coagulation air flotation equipment; 6. Walnut shell filter; 7. Self-cleaning filter; 8. Ultrafiltration equipment; 9. Clear water tank; 10. Accident tank; 11. First chemical dosing device; 12. Second chemical dosing device; 13. Backwashing pipeline; 14. Aerated biological filter; 15. Sludge thickening tank. Detailed implementation manners

[0022] To better understand the present utility model, the content of the present utility model will be further clearly elaborated below in conjunction with embodiments. However, the protected content of the present utility model is not limited to the following embodiments. In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details.

[0023] All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts belong to the scope protected by the present utility model.

[0024] Embodiment 1

[0025] As Figure 1 shown, the oily mine water treatment device includes: a regulation tank 1 connected to the mine water, a primary sedimentation tank 2 connected to the regulation tank 1, an integrated water purifier 3 connected to the primary sedimentation tank 2, an intermediate water tank 4 connected to the integrated water purifier 3, a coagulation air flotation equipment 5 connected to the intermediate water tank 4, a walnut shell filter 6 connected to the coagulation air flotation equipment 5, a self-cleaning filter 7 connected to the walnut shell filter 6, an ultrafiltration equipment 8 connected to the self-cleaning filter 7, and a clear water tank 9 connected to the ultrafiltration equipment 8.

[0026] The mine water is connected to the regulation tank 1 through a first lift pump. The first lift pump is provided with a bypass pipeline, and the bypass pipeline is connected to the accident tank 10. The accident tank 10 is connected to the regulation tank 1 through a second lift pump.

[0027] The primary sedimentation tank 2 is connected to the first chemical dosing device 11, and the first chemical dosing device 11 is provided with a flocculant and a coagulant aid.

[0028] The integrated water purifier 3 is an FJ type integrated water purifier 3.

[0029] The coagulation air flotation equipment 5 is connected to the second chemical dosing device 12, and the second chemical dosing device 12 is provided with a demulsifier, a flocculant and a coagulant aid.

[0030] The intermediate water tank 4 is connected to the integrated water purifier 3 through the backwashing pipeline 13.

[0031] The sludge generated by the primary sedimentation tank 2, the backwashing drainage generated by the integrated water purifier 3, the sludge and scum generated by the coagulation air flotation equipment 5, the backwashing drainage generated by the walnut shell filter 6, the drainage generated by the self-cleaning filter 7, and the backwashing drainage generated by the ultrafiltration equipment 8 are respectively connected to the sludge thickening tank 15.

[0032] Example 2

[0033] As Figure 2 shown, this embodiment is an improvement based on Embodiment 1 and further includes: an aerated biological filter 14. The effluent of the walnut shell filter 6 is connected to the aerated biological filter 14, and the effluent of the aerated biological filter 14 is connected to the self-cleaning filter 7.

[0034] The backwashing drainage generated by the aerated biological filter 14 is connected to the sludge thickening tank 15.

[0035] The process flow of this treatment equipment is described in detail as follows: The mine water is lifted to the regulation tank 1 by the first lift pump, where the water quality and quantity of the influent are regulated, and it can also play a role in preliminary sedimentation. A bypass pipeline is set for the pipeline of the first lift pump. When the underground water inflow suddenly increases, it can be directly lifted to the accident tank 10. A second lift pump is set in the accident tank 10, and the wastewater is lifted into the regulation tank 1 by the second lift pump. The effluent of the regulation tank 1 enters the primary sedimentation tank 2, and the muddy water is separated by adding flocculants and coagulant aids to remove suspended solids and part of the organic pollutants. The effluent of the primary sedimentation tank 2 is lifted into the integrated water purifier 3. The effluent of the integrated water purifier 3 enters the intermediate water tank 4, and the effluent of the intermediate water tank 4 is lifted into the coagulation air flotation equipment 5. By adding demulsifiers, the stability of the emulsified oil in the water is broken, enabling the oil and water to separate layers, creating conditions for the coalescence and granulation of oil particles. Then, flocculants and coagulant aids are added to make the particles quickly coagulate. Under the action of tiny bubbles, impurities float to the water surface, and a large amount of oil, organic matter (COD cr ) and SS are removed by the slag scraping machine, and then the wastewater is lifted into the walnut shell filter 6. The walnut shell filter 6 uses an oil-resistant filter material - special walnut shells as the filtering medium, and utilizes the characteristics of large specific surface area, strong adsorption capacity, and large sewage interception capacity of the walnut shells to remove oil and suspended solids in the water. Under normal circumstances, the effluent of the walnut shell filter 6 enters the self-cleaning filter 7, and the effluent of the self-cleaning filter 7 enters the water inlet tank of the ultrafiltration equipment 8 and can be reused after being treated by the ultrafiltration equipment 8. A three-way valve is set at the front end of the water inlet tank of the ultrafiltration equipment 8. When the water quality is abnormal, this three-way valve is closed, the effluent of the walnut shell filter 6 enters the aerated biological filter 14, the effluent of the aerated biological filter 14 enters the self-cleaning filter 7, the effluent of the self-cleaning filter 7 enters the water inlet tank of the ultrafiltration equipment 8, and the effluent treated by the ultrafiltration equipment 8 meets the standards and is reused.

[0036] This treatment equipment is applied to the treatment of oily mine water in a certain project. The treatment effects of each main treatment unit are shown in the following table:

[0037]

[0038]

[0039] As can be seen from the above table, through the collaborative operation of the above-mentioned treatment units, the equipment of the present utility model can achieve efficient treatment of specific pollutants in oily mine water, and the removal effects of the corresponding pollutants can reach the discharge standards, so as to meet the relevant regulations and achieve up-to-standard discharge.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present utility model shall be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solutions of the present utility model.

[0041] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Oil-containing mine water treatment equipment, characterized by: include: A regulating tank connected to mine water, a primary sedimentation tank connected to the regulating tank, an integrated water purifier connected to the primary sedimentation tank, an intermediate water tank connected to the integrated water purifier, a coagulation and flotation equipment connected to the intermediate water tank, a walnut shell filter connected to the coagulation and flotation equipment, a self-cleaning filter connected to the walnut shell filter, an ultrafiltration equipment connected to the self-cleaning filter, and a clear water tank connected to the ultrafiltration equipment.

2. The oil-containing mine water treatment equipment according to claim 1, characterized in that: The mine water is connected to the regulating tank through a first lifting pump, the first lifting pump is provided with a bypass pipeline, the bypass pipeline is connected to the accident tank, and the accident tank is connected to the regulating tank through a second lifting pump.

3. The oil-containing mine water treatment equipment according to claim 1, characterized in that: The primary sedimentation tank is connected to a first dosing device, in which a flocculant and a coagulant aid are arranged.

4. The oil-containing mine water treatment equipment according to claim 1, characterized in that: The integrated water purifier is an FJ type integrated water purifier.

5. The oil-containing mine water treatment equipment according to claim 1, characterized in that: The coagulation and flotation equipment is connected to a second dosing device, and a demulsifier, a flocculant and a coagulant aid are arranged in the second dosing device.

6. The oil-containing mine water treatment equipment according to claim 1, characterized in that: The intermediate water tank is connected to the integrated water purifier through a backwashing pipeline.

7. The oil-containing mine water treatment equipment according to any one of claims 1 to 6, characterized in that: The sludge produced by the primary sedimentation tank, the backwash drainage produced by the integrated water purifier, the sludge and scum produced by the coagulation and flotation equipment, the backwash drainage produced by the walnut shell filter, the drainage produced by the self-cleaning filter and the backwash drainage produced by the ultrafiltration equipment are respectively connected to the sludge thickening tank.

8. The oil-containing mine water treatment equipment according to claim 7, characterized in that: The outlet water of the walnut shell filter is connected to the aerated biological filter, and the outlet water of the aerated biological filter is connected to the self-cleaning filter.

9. The oil-containing mine water treatment equipment according to claim 8, characterized in that: The backwash drainage produced by the aerated biological filter is connected to the sludge thickening tank.

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