Iron and manganese removal quicksand filtering device

Abstract

The utility model relates to the technical field of iron and manganese removal of water bodies, and discloses an iron and manganese removal quicksand filtering device which comprises a base and is characterized in that the upper side of the base is fixedly connected with a filtering tank. A manganese active filter membrane and an iron active filter membrane are formed on the surface of the quartz sand through chemical reaction, so that iron and manganese in water are oxidized into high-valence iron and manganese insoluble substances under the catalysis of the formed active filter membranes, and then the high-valence iron and manganese insoluble substances are intercepted by the filter material quartz sand, so that the purpose of removing iron and manganese is achieved, filtration and sand washing are simultaneously carried out, and the quartz sand filter material flows from top to bottom; after flowing to the sand lifting pipe at the center of the bottom, the sand is lifted to the sand washer at the top by the air lift pump unit for sand washing, and then falls to the top of a sand layer, and the process is repeated, so that all functions of removing iron and manganese are realized in one filtering tank by simplifying the process flow, and the overall efficiency of purification and filtration can be remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water body iron and manganese removal technical field especially relates to a kind of iron and manganese removal flow sand filter device. BACKGROUND

[0002] At present, water contains excessive iron and manganese, which will bring great harm to domestic drinking water and industrial water, according to the "Drinking Water Health Standards" of our country: iron content is less than 0.3mg / L, and manganese content is less than 0.1mg / L, according to "Integrated Wastewater Discharge Standard", for the first level standard of industrial wastewater, the discharge limit value of manganese is usually 2.0mg / L, when the iron and manganese content in water exceeds the above standard, it needs to be treated, there are many methods for iron removal, such as air direct oxidation method, chlorine oxidation method, contact filtration oxidation method and potassium permanganate oxidation method, and the practical application is more in air direct oxidation method, chlorine oxidation method and contact filtration oxidation method, manganese in water generally exists in divalent form, which is the main object of manganese removal, and the main methods for manganese removal in engineering practice include: potassium permanganate oxidation method, chlorine contact filtration method and biological manganese removal method.

[0003] In the above conventional methods, air direct oxidation method is more economical, and other methods have higher treatment cost, air direct oxidation method needs to set up aeration tank to oxidize iron and manganese in water into high-valence insoluble substance, and then remove it by precipitation or filtration method, therefore, the treatment process is longer, there are more structures, more system supporting equipment, and larger land occupation area, in view of this, an iron and manganese removal flow sand filter device is provided. SUMMARY

[0004] To solve the technical problem of water body iron and manganese removal, the utility model provides an iron and manganese removal flow sand filter device.

[0005] The utility model discloses the following technical scheme is realized: an iron and manganese removal flow sand filter device, including base, the upper side of base is fixedly connected with filter jar, the bottom of filter jar is provided with gas lift pump unit, the upper side of gas lift pump unit is connected with center sand lifting pipe, the upper end of center sand lifting pipe extends to the space above filter jar, quartz sand is packed in the inside of filter jar, the upper end of center sand lifting pipe is provided with sand washing mechanism, one side of filter jar upper end is provided with water supply pipeline mechanism, the one side of filter jar upper end is provided with drainage mechanism, the lower side of cleaning tank is provided with gas pressure balance mechanism.

[0006] As a further improvement of the above-mentioned scheme, the sand washing mechanism includes a cleaning tank fixedly connected to the upper side of the inside of the filter jar, the lower side of the cleaning tank is a hollow structure, the upper end of the center sand lifting pipe is located inside the cleaning tank, a sand washer unit is fixedly connected to the upper side of the inside of the filter jar, and the sand washer unit is arranged in cooperation with the upper end port of the center sand lifting pipe.

[0007] As a further improvement of the above-mentioned scheme, the water supply pipeline mechanism comprises a downward flow guide pipe sleeved outside the central sand lifting pipe, and a water inlet pipe is communicated with one side of the upper end of the downward flow guide pipe and outwardly penetrates the filter tank wall at the end away from the central sand lifting pipe.

[0008] As a further improvement of the above-mentioned scheme, the water discharge mechanism comprises a water bucket fixedly connected below the top of the filter tank, and a water outlet pipe is communicated with one side of the water bucket close to the outer wall of the filter tank and outwardly penetrates at the end away from the water bucket.

[0009] As a further improvement of the above-mentioned scheme, the air pressure balance mechanism comprises an air collecting unit arranged below the cleaning tank, a wind collecting channel is fixedly connected to the outside of the filter tank, the outside of the air collecting unit is communicated with the inside of the wind collecting channel, and an exhaust pipe is communicated with the outside of the wind collecting channel.

[0010] As a further improvement of the above-mentioned scheme, the lower side of the cleaning tank is communicated with a sewage discharge pipe, and one end of the sewage discharge pipe outwardly penetrates the tank wall of the filter tank.

[0011] As a further improvement of the above-mentioned scheme, the lower end of the downward flow guide pipe is communicated with a water distributor unit, and the water distributor unit is used for mixing the water injected by the water inlet pipe into the quartz sand.

[0012] As a further improvement of the above-mentioned scheme, an aeration perforated pipe is arranged above the water distributor unit, the lower side of the aeration perforated pipe is communicated with an air guide pipe, the lower end of the air guide pipe is communicated with the upper side of the air-lift pump unit, and the aeration perforated pipe is used for injecting oxygen in compressed air into water.

[0013] Compared with the prior art, the beneficial effects of the utility model lie in:

[0014] The flowing sand filtering system of the utility model, in the case that the flowing sand flows downward in the oxygen-rich environment, the oxygen wrapped in the sand particles is chemically reacted on the surface of the quartz sand to form manganese active filter membrane and iron active filter membrane, the iron and manganese in the water are oxidized into high-valence iron and manganese insoluble substances under the catalysis of the formed active filter membrane, and then are intercepted by the filter material quartz sand, so that the purpose of removing iron and manganese is achieved, the filtering and sand washing are simultaneously performed, the quartz sand filter material flows from top to bottom, is lifted to the sand washer at the top by the air-lift pump unit after flowing to the bottom central sand lifting pipe, and then falls to the top of the sand layer, so as to circulate repeatedly, through the simplified process flow, the whole functions of removing iron and manganese are realized in one filter tank, and the overall efficiency of purification and filtering can be remarkably improved.

[0015] The water treatment process of the utility model has the advantages of saving investment cost and reducing system land area compared with the traditional water treatment system which has long process and more supporting equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model provides a whole structure schematic diagram of iron and manganese removing quicksand filter device;

[0017] Figure 2 The Figure 1 side view;

[0018] Figure 3 The Figure 1 first sectional view;

[0019] Figure 4 The Figure 1 second sectional view.

[0020] Main symbol explanation:

[0021] 1, base; 2, filter tank; 3, wind collecting channel; 4, blowdown pipe; 5, exhaust pipe; 6, water inlet pipe; 7, water bucket; 8, sand washer unit; 9, cleaning tank; 10, downward flow guide pipe; 11, central sand lifting pipe; 12, water outlet pipe; 15, air guide pipe; 16, air-lift pump unit; 17, water distributor unit; 18, aeration perforated pipe; 19, air collection unit. DETAILED DESCRIPTION

[0022] In the following, the utility model is further described in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict. EMBODIMENT

[0023] Please combine Figures 1-4 The iron and manganese removing quicksand filter device of the embodiment includes a base 1, an iron and manganese removing quicksand filter device includes a base 1, the upper side of the base 1 is fixedly connected with a filter tank 2, the filter tank 2 is filled with quartz sand, the total depth of filter bed is 2000-2500mm, the bottom of the filter tank 2 is provided with an air-lift pump unit 16, the upper side of the air-lift pump unit 16 is communicated with a central sand lifting pipe 11, the upper end of the central sand lifting pipe 11 extends upward to the space above the filter tank 2, the dirty sand particles at the bottom are lifted to the sand washer 8 at the top of the system under the action of the air-lift pump unit 16, the filter tank 2 is filled with quartz sand, the upper end of the central sand lifting pipe 11 is provided with a sand washing mechanism, the side of the filter tank 2 is provided with a water supply pipeline mechanism, the upper end of the filter tank 2 is provided with a water drainage mechanism, and the lower side of the cleaning tank 9 is provided with an air pressure balance mechanism.

[0024] Please combine Figure 3 As shown, the sand washing mechanism includes a cleaning tank 9 fixedly connected to the upper side inside the filter tank 2, the lower side of the cleaning tank 9 is a hollow structure, the upper end of the central sand lifting pipe 11 is located inside the cleaning tank 9, the upper side of the cleaning tank 9 is provided with a sand washer unit 8 fixedly connected to the upper side of the filter tank 2, the sand washer unit 8 is arranged in cooperation with the upper end port of the central sand lifting pipe 11, the dirty sand is first scrubbed by compressed air in the air-lift pump unit 16, and then enters the sand washer 8 for cleaning, the sand particles fall along the winding path of the sand washer 8 under the action of gravity, and are flushed by a small amount of reverse flowing clean filtrate in the sand washer 8.

[0025] Formation of iron-removing filter material quartz sand: after the water containing iron is oxidized, the chemically formed hydroxide of high-valence iron gradually adheres to the surface of the filter material quartz sand during the falling of the sand, forming an "iron active filter membrane", which can also adsorb the divalent iron in the water, catalyze the oxidation into trivalent iron, and adhere to the surface of the filter material, so that the iron in the water is removed;

[0026] Formation of manganese-removing filter material quartz sand: the manganese-removing area is similar to the iron-removing area, after the water containing manganese is oxidized, the hydroxide of high-valence manganese is gradually adhered to the surface of the filter material quartz sand, forming an "manganese active filter membrane", so that the filter material becomes "manganese mature sand". The naturally formed mature sand has a contact catalytic effect, which can greatly accelerate the oxidation speed, so that the divalent manganese in the water can be oxidized into high-valence manganese by dissolved oxygen under relatively low pH conditions and removed from the water.

[0027] Please combine Figure 3 As shown, the water supply pipeline mechanism includes a downward flow guide pipe 10 sleeved outside the central sand lifting pipe 11, the upper end of the downward flow guide pipe 10 is communicated with the water inlet pipe 6 on one side, and the end of the water inlet pipe 6 away from the central sand lifting pipe 11 penetrates out of the tank wall of the filter tank 2.

[0028] Please combine Figure 3 As shown, the water drainage mechanism includes a water bucket 7 fixedly connected below the top of the filter tank 2, the water bucket 7 is communicated with the water outlet pipe 12 on the side close to the outer wall of the filter tank 2, and the end of the water outlet pipe 12 away from the water bucket 7 penetrates outwards.

[0029] Please combine Figure 3 As shown, the air pressure balance mechanism includes an air collection unit 19 arranged below the cleaning tank 9, the outer side of the filter tank 2 is fixedly connected with a wind collecting channel 3, the outer side of the air collection unit 19 is communicated with the inner side of the wind collecting channel 3, and the outer side of the wind collecting channel 3 is communicated with the exhaust pipe 5. The aeration bubbles are collected by the air collection unit 19 at the lower part of the clean water area and then discharged out of the device, reducing the fluctuation of the clean water surface.

[0030] Please combine Figure 3As shown, the lower side of the washing tank 9 is communicated with a blowdown pipe 4, one end of the blowdown pipe 4 outwardly penetrates the tank wall of the filter tank 2, and the sewage generated after sand washing can be discharged outside the tank from the blowdown pipe 4.

[0031] Please combine Figure 3 As shown, the lower end of the downward flow pipe 10 is communicated with a water distributor unit 17, the water distributor unit 17 is used for mixing the water injected from the water inlet pipe 6 into the quartz sand, the water inlet pipe 6 plays a role of water supply, and the water to be filtered is mixed with the quartz sand at the bottom through the downward flow pipe 10.

[0032] Please combine Figure 3 As shown, an aeration perforated pipe 18 is arranged above the water distributor unit 17, an oxygen-rich environment is needed in the water for iron and manganese filtration, the oxygen in the air can be mixed into the water through the aeration perforated pipe 18, the lower side of the aeration perforated pipe 18 is communicated with a gas guide pipe 15, the lower end of the gas guide pipe 15 is communicated with the upper side of the air-lift pump unit 16, and the aeration perforated pipe 18 is used for injecting the oxygen in the compressed air into the water.

[0033] The implementation principle of the iron and manganese removal sand flow filtration device in the embodiment of the application is as follows: the water flow needing water iron and manganese removal is connected from the water inlet pipe 6, the quartz sand is pre-placed in the filter tank 2 as a medium, the maximum height of the quartz sand is located at the upper end of the downward flow pipe 10, the water flow further enters the water distributor unit 17 through the downward flow pipe 10, the water seeps into the quartz sand through the lower side small holes of the water distributor unit 17, the air-lift pump unit 16 is started, the compressed air dissolves the oxygen in the air into the water through the aeration perforated pipe 18 to increase the oxygen content of the water body, and on the other hand, the quartz sand containing oxygen and water is pushed to the lower side of the sand washer unit 8 through the central sand lifting pipe 11 by the air-lift pump unit 16, when the sand washer unit 8 works, the quartz sand at this time is cleaned, the sewage and sludge are discharged from the blowdown pipe 4, the quartz sand falls from the lower side of the washing tank 9 under the action of its own gravity and is stacked into the upper layer of the quartz sand layer, and the lower layer of the quartz sand is continuously pushed upward under the action of the air-lift pump unit 16, so as to form the sand flow, the excess air injected into the tank by the aeration perforated pipe 18 is collected through the air collection unit 19 and then discharged from the filter system through the air outlet pipe 5, and the water body after the purification treatment is collected from the water bucket 7 and then discharged from the tank through the water outlet pipe 12.

[0034] The above-mentioned embodiment is only a preferred embodiment of the application, and cannot be used to limit the protection scope of the application, and any non-substantial change and replacement made by the person skilled in the art on the basis of the application all belong to the protection scope of the application.

Claims

1. A device for filtering iron and manganese from sand, comprising a base (1), characterized in that, The upper side of the base (1) is fixedly connected with a filter tank (2), the bottom of the filter tank (2) is provided with a gas lifting pump unit (16), the upper side of the gas lifting pump unit (16) is communicated with a central sand lifting pipe (11), the upper end of the central sand lifting pipe (11) extends upward to the space above the filter tank (2), the inside of the filter tank (2) is filled with quartz sand, and the upper end of the central sand lifting pipe (11) is provided with a sand washing mechanism; The sand washing mechanism comprises a cleaning box (9) fixedly connected with the inside of the upper side of the filter tank (2), the lower side of the cleaning box (9) is a hollow structure, the upper end of the central sand lifting pipe (11) is located in the inside of the cleaning box (9), the inside of the upper side of the cleaning box (9) is provided with a sand washer unit (8) fixedly connected with the upper side of the filter tank (2), the sand washer unit (8) is arranged in cooperation with the upper end port of the central sand lifting pipe (11), one side of the filter tank (2) is provided with a water supply pipeline mechanism, one side of the upper end of the filter tank (2) is provided with a drainage mechanism, and the lower side of the cleaning box (9) is provided with an air pressure balance mechanism.

2. The ferrous and manganese removal sand filter apparatus of claim 1, wherein, The water supply pipeline mechanism comprises a downward flow guide pipe (10) sleeved outside the central sand lifting pipe (11), one side of the upper end of the downward flow guide pipe (10) is communicated with a water inlet pipe (6), and one end of the water inlet pipe (6) away from the central sand lifting pipe (11) penetrates out of the tank wall of the filter tank (2) outward.

3. The ferrous and manganese removal sand filter apparatus of claim 1, wherein, The drainage mechanism comprises a water bucket (7) fixedly connected below the tank top of the filter tank (2), one side of the water bucket (7) close to the outer wall of the filter tank (2) is communicated with a water outlet pipe (12), and one end of the water outlet pipe (12) away from the water bucket (7) penetrates out of the tank wall outward.

4. The ferrous and manganese removal sand filter apparatus of claim 1, wherein, The air pressure balance mechanism comprises an air collection unit (19) arranged below the cleaning box (9), the outer side of the filter tank (2) is fixedly connected with a wind collecting channel (3), the outer side of the air collection unit (19) is communicated with the inner side of the wind collecting channel (3), and the outer side of the wind collecting channel (3) is communicated with an exhaust pipe (5).

5. The ferrous and manganese removal sand filter apparatus of claim 1, wherein, The lower side of the cleaning box (9) is communicated with a blowdown pipe (4), and one end of the blowdown pipe (4) penetrates out of the tank wall of the filter tank (2) outward.

6. The ferrous and manganese removal sand filter apparatus of claim 2, wherein, The lower end of the downward flow guide pipe (10) is communicated with a water distributor unit (17), and the water distributor unit (17) is used for mixing water injected by the water inlet pipe (6) into the quartz sand.

7. A ferrous and manganese removal sand filter apparatus as claimed in claim 6, wherein, The upper side of the water distributor unit (17) is provided with an aeration perforated pipe (18), the lower side of the aeration perforated pipe (18) is communicated with a gas guide pipe (15), the lower end of the gas guide pipe (15) is communicated with the upper side of the gas lifting pump unit (16), and the aeration perforated pipe (18) is used for injecting oxygen in compressed air into water.

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