Filter organic matter removal device system

Abstract

The utility model relates to a filter tank organic matter removal device system, which comprises a filter tank, a water inlet arranged at the upper part of the filter tank, and a water outlet arranged at the bottom of the filter tank, the filter tank comprises a filter sand layer, a backwashing device arranged close to the bottom of the filter sand layer, and a covering filter layer arranged at the upper part of the filter sand layer and containing an organic matter removal medium, the lifting mechanism is used for driving the covering filter layer to lift in the filter tank, so that the vertical space of the filter tank is fully utilized, and the function of removing organic matters can be realized on the premise of not additionally arranging a new filter tank occupying land.

Description

Technical Field

[0001] The utility model relates to the field of water supply, and specifically to the technical field of an organic matter removal device system for a filter tank. Background Art

[0002] In the purification process of modern waterworks, although conventional processes can effectively remove suspended solids, colloidal particles, and most inorganic pollutants in water, for certain specific trace organic matters, especially those with large molecular weights, strong polarities, or hydrophobicities, such as 2-methylisoborneol, etc., their removal efficiency is often unsatisfactory. The presence of volatile organic compounds such as 2-methylisoborneol not only affects the sensory quality of drinking water, such as producing unpleasant odors, but may also pose a potential threat to human health. Therefore, their effective removal has become an important challenge in water treatment technology.

[0003] In the prior art, as an improvement scheme, an activated carbon adsorption layer can be added to the filter tank or biological fillers can be put into the filter tank to remove organic matters in water by adsorption and microbial action. For example, the carbon-sand double-layer filter tank disclosed in Chinese Patent CN112279396A discloses a carbon tank and a sand tank arranged in parallel. However, the construction cost of a single activated carbon filter tank is high, and there are no land resource conditions for separate construction in many urban environments. However, if it is set up synchronously with the filter tank, due to its light weight, there are also practical application problems such as being easily washed away during the backwashing of the filter tank. Similarly, there is also a problem that the microorganisms are easily washed away during the backwashing of the filter tank for the biological fillers. Summary of the Utility Model

[0004] In view of the above requirements, the utility model aims to design an organic matter removal device system for a filter tank to achieve deep purification of organic matters by making full use of the vertical space on the premise of avoiding additional land occupation problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An organic matter removal device system for a filter tank includes a filter tank, a water inlet arranged at the upper part of the filter tank, and a water outlet arranged at the bottom of the filter tank;

[0007] The filter tank includes a filter sand layer and a backwashing device arranged close to the bottom of the filter sand layer;

[0008] It further includes a covering filter layer arranged above the filter sand layer and containing an organic matter removal medium, and a lifting mechanism for driving the covering filter layer to lift and lower in the filter tank.

[0009] Compared with the prior art, in this case, by arranging a covering filter layer capable of removing organic matter on the upper part of the filtering sand layer, the vertical space of the filter tank is fully utilized, and the function of removing organic matter can be realized without adding a new filter tank occupying land. At the same time, a lifting mechanism for driving the covering filter layer to lift and lower in the filter tank is configured for the covering filter layer, which can prevent the covering filter layer from being washed away during the backwashing stage of the filter tank and enable it to maintain an efficient working state.

[0010] In a preferred embodiment, the organic matter removal medium of the covering filter layer is activated carbon and / or biological filler.

[0011] In a preferred embodiment, the covering filter layer includes a packaging mesh shell to prevent the organic matter removal medium from mixing into the filtering sand layer.

[0012] In a preferred embodiment, the packaging mesh shell is a stainless steel mesh shell or a polytetrafluoroethylene mesh shell.

[0013] In some embodiments, the lifting mechanism is a hoisting mechanism for hoisting the covering filter layer.

[0014] In some embodiments, the lifting mechanism is a lift for vertically lifting and lowering the covering filter layer through a guiding device.

[0015] In a preferred embodiment, the backwashing device includes a backwashing blower for blowing air into the filter tank.

[0016] In a preferred embodiment, the backwashing device further includes a backwashing water pump for filling the filter tank with clean water and a sewage outlet.

[0017] In some embodiments, a device system for removing organic matter from a filter tank further includes two filter tanks arranged opposite to each other at the water outlet, and a water outlet channel formed between the filter tanks. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the filtering state of a device system for removing organic matter from a filter tank in this case;

[0019] Figure 2 is a schematic diagram of the backwashing state of a device system for removing organic matter from a filter tank in this case;

[0020] Figure 3 is a schematic diagram of Embodiment 2 of a device system for removing organic matter from a filter tank in this case. Detailed Description of the Embodiment

[0021] The features of the present invention and other related features are further described in detail below through embodiments for the understanding of those skilled in the same industry:

[0022] Embodiment 1, please refer to Figure 1, in this case, an organic matter removal device system for a filter tank includes a filter tank 100, a water inlet 110 provided at the upper part of the filter tank 100, and a water outlet 120 provided at the bottom of the filter tank 100. In this way, water enters from the water inlet 110 at the upper part of the filter tank 100, passes through the filter tank 100 from top to bottom by its own weight for filtration, then converges at the bottom, and enters the subsequent treatment process from the water outlet 120 at the bottom. First of all, the filter tank 100 includes a filter sand layer 130 as the main filtration layer. Here, the sand filtration material of the filter sand layer 130 can be quartz sand used in a conventional water supply system, which will not be elaborated here.

[0023] During the filtration process, impurities such as suspended solids in the raw water will be intercepted in the sand filtration layer. As the operation time prolongs, these impurities will gradually accumulate, resulting in the blockage of the pores of the filter sand layer 130. Therefore, a backwashing device 200 is provided close to the bottom of the filter sand layer 130. Specifically, the backwashing device 200 includes a backwashing blower 210 that blows air into the filter tank 100, a backwashing water pump 220 that fills the filter tank 100 with clean water, and a sewage outlet 230 that discharges the sewage generated after backwashing. During the backwashing process, the backwashing blower 210 and the backwashing water pump 220 can be used alone or simultaneously for washing.

[0024] In sand filtration, the removal efficiency of organic matter, especially such as 2-methylisoborneol, is relatively low. Therefore, a covering filter layer 140 containing an organic matter removal medium 141 is provided above the filter sand layer 130. By making full use of the vertical space of the filter tank 100, the function of organic matter removal can be realized without adding a new filter tank that occupies land.

[0025] As a preferred solution for the organic matter removal medium 141, it can be activated carbon or biological filler, or a combination of both. The microporous structure of activated carbon gives it extremely high adsorption capacity for small molecule organic matter, and shows excellent removal effect for such refractory organic matter as 2-methylisoborneol. While the biological filler can release microorganisms. By cultivating specific microbial populations and using their biodegradation effect, the organic pollutants in water can be converted into harmless carbon dioxide and water, and the mineralization of organic pollutants can be achieved, which is an environmentally friendly purification method.

[0026] In this case, as a preferred biological filler, it is required to have a light weight, a low density, a high porosity and good buoyancy. They can float or suspend in water during the water treatment process, which is convenient for the attachment and growth of microorganisms. It can be plastic biological filler, biological ball filler, foam biological filler, honeycomb filler, soft fiber filler, etc.

[0027] As stated above, the filter sand layer 130 requires backwashing operations, and at this time, the overlying filter layer 140 will be affected. Due to its light weight, activated carbon will be washed away during the backwashing operation, while the biological filler will wash away microorganisms during the backwashing operation. Therefore, in this case, a lifting mechanism 300 is provided to drive the overlying filter layer 140 to lift and lower in the filter tank 100, which can prevent the overlying filter layer from being washed away during the backwashing stage of the filter tank and enable it to maintain an efficient working state.

[0028] As a specific implementation, first, the overlying filter layer 140 uses a packaging net shell 142 to wrap the organic matter removal medium 141 to prevent the organic matter removal medium from mixing into the filter sand layer 130. Preferably, the packaging net shell 142 can be a stainless steel mesh shell or a polytetrafluoroethylene (PTFE) mesh shell. Stainless steel, due to its good corrosion resistance, high strength, and easy processing and forming characteristics, is often used to make the filter mesh housing. And, PTFE, due to its excellent chemical stability and non-adhesiveness, can be used as a coating material for the filter mesh or net shell to enhance its corrosion resistance, while maintaining good sliding performance and reducing dirt accumulation. In extreme environments, duplex stainless steel (such as 2507) or titanium alloy materials can also be selected.

[0029] In a preferred case, the lifting mechanism 300 can be a hoisting mechanism for hoisting the overlying filter layer 140. Specifically, a hoist 310 and a drive motor 320 can be provided at the upper part of the filter tank 100. The hoist 310 is connected to the overlying filter layer 140, and the overlying filter layer 140 is vertically hoisted by the hoist 310. For the effect after hoisting, please refer to Figure 2 ,, when performing the backwashing operation, hoist the overlying filter layer 140 to the position as shown in Figure 2 , that is, the position of the overlying filter layer 140 is higher than the water level during the backwashing operation, which can effectively prevent the overlying filter layer 140 from being washed away.

[0030] For Embodiment 2, please refer to Figure 3 , during the operation of the biological filler, its weight will increase after long-term immersion. As described above, it is difficult to hoist with a hoisting mechanism with a heavy weight. Therefore, as the lifting mechanism 300, it can be a lift that can be vertically lifted through a guiding device 330. The guiding device 330 can be placed on both sides of the filter tank 100, and the force is more uniform. Specifically, it can be in the form of a slider moving. In the setting of the lift, the installation position and the force direction are selected according to the actual environmental conditions of the filter tank 100, which are conventional lifting means in the industry and will not be elaborated here. This embodiment mainly illustrates that when the biological filler is heavy, a lift cooperating with the guiding device 330 of Embodiment 2 can be selected. Of course, Embodiment 2 can also be applied to the scenario of light biological filler.

[0031] In some embodiments, an organic matter removal device system for a filter tank further includes two filter tanks 100 arranged opposite to each other at the water outlet 120, and a water outlet channel 400 formed between the filter tanks 100.

[0032] As described above, the present case protects an organic matter removal device system for a filter tank, and all technical solutions identical or similar to those of the present case should be shown to fall within the protection scope of the present case.

Claims

1. An organic matter removal device system for a filter tank, characterized in that, It includes a filter tank (100), a water inlet (110) arranged at the upper part of the filter tank (100), and a water outlet (120) arranged at the bottom of the filter tank (100). The filter tank (100) includes a filter sand layer (130) and a backwashing device (200) arranged close to the bottom of the filter sand layer (130). It further includes a covering filter layer (140) arranged at the upper part of the filter sand layer (130) and containing an organic matter removal medium (141), and a lifting mechanism (300) for driving the covering filter layer (140) to lift and lower in the filter tank.

2. The organic matter removal device system of a filter tank according to claim 1, characterized in that, The organic matter removal medium (141) of the covering filter layer (140) is activated carbon and / or biological filler.

3. The organic matter removal device system of a filter tank according to claim 1, characterized in that, The covering filter layer (140) includes an encapsulating mesh shell (142).

4. The organic matter removal device system of a filter tank according to claim 3, characterized in that, The encapsulating mesh shell (142) is a stainless steel mesh shell or a polytetrafluoroethylene mesh shell.

5. The organic matter removal device system of a filter tank according to claim 1, characterized in that, The lifting mechanism (300) is a hoisting mechanism for hoisting the covering filter layer (140).

6. The organic matter removal device system of a filter tank according to claim 1, characterized in that, The lifting mechanism (300) is a lift that can vertically lift and lower the covering filter layer (140) through a guiding device (330).

7. The organic matter removal device system of a filter tank according to claim 1, characterized in that, The backwashing device (200) includes a backwashing blower (210) for blowing air into the filter tank.

8. The organic matter removal device system of a filter tank according to claim 6, characterized in that, The backwashing device (200) further includes a backwashing water pump (220) for filling the filter tank (100) with clean water and a sewage outlet (230).

9. A filter organic matter removal device system according to any one of claims 1 to 8, characterized in that, It further includes two filter tanks (100) arranged opposite to each other with respect to the water outlet (120), and a water outlet channel (400) formed between the filter tanks (100).

Images