CN208218548U - Muddy mine water Dynamic Membrane cleaning equipment - Google Patents

Abstract

A kind of muddiness mine water Dynamic Membrane cleaning equipment, include mixed reaction pond and purifier, the purifier is the hollow cylinder of upper opening, its lower end is conical bottom and bottom end is equipped with mud discharging mouth, it is hollow form in the mixed reaction pond, the mixed reaction pond is connected to the lower part in the purifier so that fluid is passed through purifier, top in the purifier is equipped with polyester fiber and weaves tube assembly, middle part in the purifier is equipped with horizontal aeration tube, the aeration tube is connected to the air compressor outside purifier to which constantly aeration cleans the surface of polyester fiber braiding tube assembly；Thus, the utility model structure is simple, it is easy to operate, overcome membrane pollution problem, membrane separation concentration advantage is focused in integrated processing technique simultaneously, so that coagulation, precipitating, UF membrane are discharged, three kinds of functions are synchronous to be realized, solves the disadvantages of traditional mine water treatment technique needs a large amount of flocculants, effluent quality unstable and takes up a large area.

Description

Turbid mine water dynamic membrane purification equipment

technical field

The utility model relates to the technical field of mine purification, in particular to a dynamic membrane purification device for turbid mine water, which is suitable for resource pretreatment of turbid mine water with suspended matter SS concentration ≥ 100mg/L.

Background technique

Coal mining destroys groundwater resources and exacerbates water shortages in the region. At present, the general process of mine water is mostly composed of independent regulating tanks, sedimentation tanks, flocculation tanks and filter tanks. Due to the unstable flow and quality of mine water, these traditional process systems will bring difficulties, making them unable to operate stably and efficiently. Therefore, the exploration of new equipment and technology is particularly important at present. Membrane technology has broad prospects in the field of water treatment. Among them, ultrafiltration technology is often placed at the back end of coagulation sedimentation porous filtration in mine water to improve the quality of effluent water. The pre-ultrafiltration membrane will There will be serious membrane fouling problems. In the field of sewage treatment, in order to alleviate the problem of membrane fouling and increase the permeation flux of the membrane, some scholars proposed dynamic membrane technology to solve this problem. got the contradiction. In addition, the effluent quality of the existing integrated purification device for turbid mine water is also unstable, and the treatment effect needs to be improved.

For this reason, in view of the above-mentioned defects, the designer of the utility model researches and designs a kind of turbid mine water dynamic membrane purification equipment to overcome the above-mentioned defects by concentrating on research and design, and integrating experience and achievements in related industries for many years.

Utility model content

The purpose of this utility model is to provide a dynamic membrane purification equipment for turbid mine water, which has a simple structure and is easy to operate, overcomes the problem of membrane pollution, and at the same time integrates the advantages of membrane separation and concentration into an integrated treatment process, so that coagulation, precipitation, The three functions of membrane separation and effluent are realized simultaneously, which solves the shortcomings of the traditional mine water treatment process that requires a large amount of flocculants, unstable effluent quality, and large floor space.

In order to solve the above problems, the utility model discloses a dynamic membrane purification equipment for turbid mine water, which includes a mixing reaction tank and a water purification device, and is characterized in that:

The water purification device is a hollow cylinder with an upper opening, the lower end of which is a conical bottom and a mud discharge port is provided at the bottom, and the inside of the mixing reaction tank is hollow for the accommodation of high-concentration flocculants and the entry of turbid mine water. The mixing reaction tank is connected to the lower part of the water purification device to pass the fluid after the mixed reaction into the water purification device. The upper part of the water purification device is provided with a polyester fiber braided pipe assembly, and the water purification device A horizontal aeration tube is provided in the middle of the interior, and the aeration tube is connected to an air compressor outside the water purification device so that the air compressor uses the aeration tube to continuously aerate and clean the surface of the polyester fiber braided tube assembly.

Wherein: a first water pump and a second water pump are also provided, the first water pump is connected to the mixing reaction tank to add turbid mine water to the mixing reaction tank, and the second water pump is connected to the polyester fiber braided pipe assembly Thereby the liquid after passing through the polyester fiber braided tube assembly is drawn out.

Wherein: the lower part of the water purification device is provided with a baffle.

Wherein: the baffle is in a bent shape opposite to the bottom of the water purification device to decelerate and guide the incoming liquid.

Wherein: the top of the mixing reaction tank is provided with a dosing port, the outer edge of the upper part is provided with a water inlet, and the outer edge of the lower part is provided with a water outlet, and the water outlet is connected to the water purification device.

Wherein: the mixing reaction tank is also provided with a stirrer.

Wherein: the stirrer comprises a stirring motor and a stirring shaft, the stirring shaft protrudes into the mixing reaction tank and a plurality of stirring blades are arranged at intervals around the periphery.

Wherein: the polyester fiber braided pipe assembly includes a water accumulation pipe, a plurality of hollow polyester fiber pipes and a sealing end, and the plurality of hollow polyester fiber pipes are vertically spaced between the water accumulation pipe and the sealing end so that the liquid After passing through multiple hollow polyester fiber pipes, it can enter the water accumulation pipe.

Wherein: the inner diameter of the hollow polyester fiber tube is 1-1.2mm, and the outer diameter is 1.8-2mm.

Wherein: the water purification device is also provided with a liquid level gauge, and the liquid level gauge is arranged above the polyester fiber braided pipe assembly.

It can be seen from the above structure that the turbid mine water dynamic membrane purification equipment of the present utility model has the following effects:

1. The structure is simple, the operation is convenient, the purification effect is good, and it can solve the balance problem between the effluent water quality and the membrane pollution;

2. Make the turbid mine water effluent quality stable, reduce the amount of flocculant dosage, reduce the occupied area, and increase the scope of use.

3. Overcome the problem of membrane fouling, and at the same time integrate the advantages of membrane separation and concentration into the integrated treatment process, so that the three functions of coagulation, sedimentation and membrane separation can be realized simultaneously, which solves the need for a large amount of flocculant, Disadvantages such as unstable effluent quality and large floor space.

The details of the present invention can be obtained from the following description and the accompanying drawings.

Description of drawings

Fig. 1 has shown the structure schematic diagram of the turbid mine water dynamic membrane purification equipment of the present invention.

Fig. 2 has shown the structure diagram of mixing reaction pool in the utility model.

Fig. 3 shows a schematic structural view of the polyester fiber braided tube assembly in the present invention.

Reference signs:

1. The first water pump; 2. Mixing reaction tank; 201. Dosing port; 202. Water inlet; 203. Mixer; 204. Water outlet; 3. Baffle; 4. Air compressor; 5. Aeration pipe; 6. Component support; 7. Polyester fiber braided pipe assembly; 701. Water accumulation pipe; 702. Hollow polyester fiber pipe; 703. Sealed end; 8. Liquid level gauge; 9. Pressure gauge; 10. Second water pump ; 11, the first valve; 12, the second valve; 13, the mud outlet.

Detailed ways

Referring to Fig. 1, it shows the turbid mine water dynamic membrane purification equipment of the present invention.

This turbid mine water dynamic membrane purification equipment comprises a mixing reaction tank 2 and a water purification device. The water purification device is a hollow cylinder with an upper opening. The inside of the reaction tank 2 is hollow for the accommodation of high-concentration flocculants and the entry of turbid mine water. The mixing reaction tank 2 is connected to the lower part of the water purification device to pass the mixed reaction fluid into the purified water device, the upper part of the water purification device is provided with a polyester fiber braided pipe assembly 7, and the middle part of the water purification device is provided with a horizontal aeration pipe 5, and the aeration pipe 5 is connected to the outside of the water purification device The air compressor 4, thereby by opening the air compressor 4 and utilizing the aeration pipe 5 to constantly aerate and clean the surface of the polyester fiber braided pipe assembly 7, wherein a first water pump 1 and a second water pump 10 are also provided, so The first water pump 1 is connected to the mixing reaction tank 2 to add turbid mine water to the mixing reaction tank 2, and the second water pump 10 is connected to the polyester fiber braided pipe assembly 7, so that the water passing through the polyester fiber braided pipe assembly 7 After the liquid is drawn out.

Wherein, the lower part of the water purification device is provided with a baffle 3, as shown in Figure 1, the baffle 3 can be bent opposite to the bottom of the water purification device to decelerate and guide the incoming liquid.

Wherein, referring to Fig. 2, the top of the mixing reaction tank 2 is provided with a dosing port 201, the upper outer edge is provided with a water inlet 202, and the lower outer edge is provided with a water outlet 204, and the described dosing port 201 is provided with a high-concentration flocculant. Putting in, the water inlet 202 is connected to the first water pump 1, and the water outlet 204 is connected to the water purification device.

Wherein, the mixing reaction tank is further provided with a stirrer 203, and the stirrer 203 may include a stirring motor and a stirring shaft, and the stirring shaft extends into the mixing reaction tank 2 and a plurality of stirring blades are arranged at intervals around the periphery.

Wherein, referring to Fig. 1, the polyester fiber braided pipe assembly 7 is installed on the inner edge of the water purification device through the assembly bracket 6, referring to Fig. 3, the polyester fiber braided pipe assembly 7 includes a water accumulation pipe 701, a plurality of hollow Polyester fiber tube 702 and sealing end 703, the plurality of hollow polyester fiber tubes 702 are vertically spaced between the accumulation water pipe 701 and the sealing end 703, the liquid can only enter the accumulation area after passing through the plurality of hollow polyester fiber tubes 702 The water pipe 701 is connected to the second water pump 10 for extraction after purification.

Wherein, a liquid level gauge 8 is also provided in the water purification device, and the liquid level gauge 8 is arranged above the polyester fiber braided pipe assembly 7 .

A pressure gauge 9 is provided between the polyester fiber braided pipe assembly 7 and the second water pump 10, and the outlet of the second water pump 10 is connected in parallel with a first valve 11 and a second valve 12, and the second valve 12 The outlet of the outlet is connected to the lower part of the water purification device.

Wherein, a control device is also provided, and the control device includes a PLC, and the PLC is connected to the first water pump 1, the second water pump 10, the air compressor 4, the liquid level gauge 8 and the pressure gauge 9, to realize the whole Automatically control the process.

Further, the hollow polyester fiber tube 702 is obtained by weaving polyester PET fiber or PET/PBT, with an inner diameter of 1-1.2 mm and an outer diameter of 1.8-2 mm.

Further, the aeration pipe 5 is fixed directly below the polyester fiber braided pipe assembly 7, and the air-water ratio is 5:1-50:1. On the one hand, in order to clean the assembly, on the other hand, the air-water ratio is controlled to reduce the impact on particles. The destruction of flocs makes the flocculants fully mixed.

Further, the intermittent operation of the suction pump 10 is characterized in that: the pumping stop time of the intermittent water outlet is Amin/Bmin, A: 10-30, B: 1-5, and the hydraulic retention time is set to 0.5-5h.

The working principle and working process of the present utility model are as follows, 1) the dynamic film coating stage opens the water pump 1, and the turbid mine water is added with a high-concentration flocculant through the mixing reaction tank 2, and enters the water purification equipment from directly below the baffle plate 3, when Stop water intake when the water surface exceeds the polyester fiber braided pipe assembly by 10-15cm, then turn on the water pump 10 and valve 12, drain water from the outlet pipe and return it to the equipment through the return pipe. With the continuous operation of the equipment, the polyester fiber braided pipe Coal slime is continuously accumulated on the inner surface of component 7, and the backflow operation is 5-10 minutes. Due to the blocking and interception of the coal slime on the inner surface of polyester fiber braided tube component 7, the water quality of the effluent is continuously improved, and the transmembrane pressure difference (TMP) Increasing. 2) In the water purification stage, the water pump 10 and the valve 11 are turned on, and at the same time, the dosage of flocculant in the turbid mine water is reduced, and the start and stop of the water pump 1 is controlled by the liquid level gauge 8, so that the water level of the liquid surface is constant, and the water pump 10 is operated in intervals. When the TMP transmembrane pressure difference (TMP) reaches 10-12KPa, open the air compressor 4 to continuously aerate and clean the surface of the polyester fiber braided pipe assembly 7, so that the transmembrane pressure difference (TMP) gradually decreases, and when the transmembrane pressure difference (TMP ) stop aeration when it drops to 3-6KPa, after the aeration stops, the transmembrane pressure difference (TMP) will continue to rise, so continuous intermittent aeration ensures that the transmembrane pressure difference (TMP) is between the set upper and lower limits, and the aeration The gas cleaning process is controlled by an automatic control system (PLC), and the coal slime is regularly discharged from the mud discharge port 13 during the water discharge process.

Further, the suspended matter SS of the turbid mine water is more than or equal to 100mg/L, and the flocculant is PAC (polyaluminum chloride), ferric chloride (FC), polyferric sulfate (PFS) and PAM (polypropylene amine). One or several mixtures, the flocculant concentration is 50mg/L-1000mg/L in the dynamic membrane coating stage, and the flocculant concentration is 0mg/L-20mg/L in the water inlet stage.

The specific process of the turbid mine water dynamic membrane purification equipment includes

1) In the dynamic membrane coating stage, the turbid mine water is added with high-concentration flocculant through the mixing reaction tank, and then enters the water purification device from the bottom of the baffle, and the coal is continuously accumulated on the inner surface of the polyester fiber braided pipe assembly through continuous circulation of mine water. After reflux for 5-10 minutes, due to the blockage and interception of the slime on the inner surface of the module, the quality of the effluent water continues to improve, and the transmembrane pressure difference (TMP) continues to increase. 2) Then enter the water purification stage, reduce the dosage of flocculant in turbid mine water, run intermittently, and when the TMP transmembrane pressure (TMP) reaches 10-12KPa, turn on the aeration device to make the transmembrane pressure (TMP) gradually When the transmembrane pressure difference (TMP) drops to 3-6KPa, the aeration is stopped, and the start and stop of the aeration is controlled by the automatic control system (PLC), so that the transmembrane pressure difference (TMP) is always between the set upper and lower limits. The slime is regularly discharged during the water discharge process.

It can be seen from the above structure that the turbid mine water dynamic membrane purification equipment of the present invention has the following advantages:

1. The structure is simple, the operation is convenient, the purification effect is good, and it can solve the balance problem between the effluent water quality and the membrane pollution;

2. Make the turbid mine water effluent quality stable, reduce the amount of flocculant dosage, reduce the occupied area, and increase the scope of use.

3. Overcome the problem of membrane fouling, and at the same time integrate the advantages of membrane separation and concentration into the integrated treatment process, so that the three functions of coagulation, sedimentation and membrane separation can be realized simultaneously, which solves the need for a large amount of flocculant, Disadvantages such as unstable effluent quality and large floor space.

Apparently, the above descriptions and records are only examples and not intended to limit the disclosure, application or use of the present utility model. Although the embodiment has been described in the embodiment and described in the accompanying drawings, the utility model is not limited by the examples of the accompanying drawings and described in the embodiment as the best mode currently considered to implement the teaching of the utility model Certain examples, the scope of the present invention shall include any embodiment falling within the foregoing description and appended claims.

Claims (10)

1. a kind of muddiness mine water Dynamic Membrane cleaning equipment, includes mixed reaction pond and purifier, it is characterised in that:

The purifier is the hollow cylinder of upper opening, and lower end is conical bottom and bottom end is equipped with mud discharging mouth, and the mixing is anti- For hollow form so that the accommodating of high concentration flocculant and muddy mine water enter in Ying Chi, the mixed reaction pond is connected to described net The fluid after hybrid reaction is passed through purifier, it is fine that the top in the purifier is equipped with polyester for lower part in water installations Dimension weaves tube assembly, and the middle part in the purifier is equipped with horizontal aeration tube, and the aeration tube is connected to outside purifier The air compressor in portion is to constantly be aerated the table for cleaning polyester fiber and weaving tube assembly using aeration tube by air compressor Face.

2. muddiness mine water Dynamic Membrane cleaning equipment as described in claim 1, it is characterised in that: be additionally provided with the first suction pump and Second suction pump, first suction pump are connected to mixed reaction pond so that muddy mine water is added mixed reaction pond, and described the Two suction pumps are connected to polyester fiber braiding tube assembly and extract out to weave the liquid after tube assembly by polyester fiber.

3. muddiness mine water Dynamic Membrane cleaning equipment as described in claim 1, it is characterised in that: under in the purifier Portion is equipped with baffle.

4. muddiness mine water Dynamic Membrane cleaning equipment as claimed in claim 3, it is characterised in that: the baffle is and water purification cartridge The opposite bending in bottom set portion is to be slowed down and be oriented to the liquid of entrance.

5. muddiness mine water Dynamic Membrane cleaning equipment as described in claim 1, it is characterised in that: the top of the mixed reaction pond End is equipped with dosing mouth, and top outer rim is equipped with water inlet, and lower part outer rim is equipped with water outlet, and the water outlet is connected to purifier It is interior.

6. muddiness mine water Dynamic Membrane cleaning equipment as described in claim 1, it is characterised in that: the mixed reaction pond is also set There is blender.

7. muddiness mine water Dynamic Membrane cleaning equipment as claimed in claim 6, it is characterised in that: the blender includes stirring Motor and agitating shaft, the agitating shaft protrudes into mixed reaction pond and periphery is equipped at intervals with multiple stirring blades.

8. muddiness mine water Dynamic Membrane cleaning equipment as described in claim 1, it is characterised in that: the polyester fiber woven tube Component includes ponding pipeline, more hollow polyester fibre pipes and sealed end, and the more hollow polyester fibre pipes are vertically spaced It is set between ponding pipeline and sealed end and can enter water accumulation pipe road by more hollow polyester fibre Guan Houcai to liquid.

9. muddiness mine water Dynamic Membrane cleaning equipment as claimed in claim 8, it is characterised in that: the hollow polyester fibre pipe Internal diameter 1-1.2mm, outer diameter 1.8-2mm.

10. muddiness mine water Dynamic Membrane cleaning equipment as described in claim 1, it is characterised in that: in the purifier also Equipped with liquid level meter, the liquid level meter is set to the top of polyester fiber braiding tube assembly.