Biological rotating disc sewage treatment equipment

Abstract

The utility model discloses biological rotating disc sewage treatment equipment, which comprises a reaction water body used for receiving falling water and a rotating disc arranged in the reaction water body, the lower part of the rotating disc is immersed in the reaction water body, the rotating disc is filled with renewable biological stuffing, and a vertical greening system is arranged on the outer side of the rotating disc. The vertical greening system comprises planted aquatic plants, the root systems of the aquatic plants penetrate through the vertical greening system and then extend into and are hung on the outer surface of the rotary disc to absorb nutrient substances of a water body, the plants participate in sewage treatment, the removal effect of organic pollutants in sewage is improved, the appearance and the environment are harmonious and unified, and the water quality is improved. The construction of plant participation type and near-natural garden type sewage treatment equipment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, and more specifically, to a biological rotary disk sewage treatment device. Background Art

[0002] With the construction and development of forest reserves and tourist destinations, human activities in forests have increased year by year, and the domestic sewage generated by public toilets, tourist service facilities, management facilities, etc. has continued to increase. Therefore, the demand for sewage treatment in forest reserves and tourist destinations has also increased. It is necessary to design sewage treatment equipment with compact structure and good treatment effect according to the actual situation and local conditions. The biological rotary disk sewage treatment equipment is an efficient and economical sewage biological treatment equipment developed on the basis of the biological filter. The biological rotary disk sewage treatment equipment consists of a water tank and a rotating disk body partially immersed in sewage. The microbial film grown on the surface of the disk body repeatedly contacts the sewage in the tank and the oxygen in the air to purify the sewage.

[0003] Common biological turntable sewage treatment equipment is mainly composed of a circular turntable installed in a sewage pool or sewage tank. However, unlike the biological turntable sewage treatment equipment used in rural areas, the biological turntable sewage treatment equipment used in forest protection areas and tourist areas is mostly set in natural water bodies, such as ponds, lakes, etc., without pre- or post-sewage treatment facilities. On the one hand, the biological turntable sewage treatment equipment used in forest protection areas and tourist areas has higher requirements for sewage treatment effects or treatment efficiency, because in most cases there is no way to pre- or post-treatment, and it is required that most organic pollutants can be removed when the sewage passes through the biological turntable sewage treatment equipment; on the other hand, when set in natural water bodies, the biological turntable sewage treatment equipment also has no landscape effect. When set in natural water bodies, it is very abrupt and not beautiful enough, and it is difficult to be used in the management and ecological restoration of forest protection areas and tourist areas. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the existing biological rotary disk in removing organic pollutants, which is poor and has no landscape effect, and to provide a biological rotary disk sewage treatment equipment. A vertical greening device is arranged on the outside of the biological rotary disk sewage treatment equipment to plant plants to participate in the sewage treatment process and beautify the biological rotary disk sewage treatment facilities to eliminate the above defects.

[0005] The technical solution adopted by the utility model is: comprising a reaction water body for receiving falling water, and a turntable arranged in the reaction water body, the lower part of the turntable is immersed in the reaction water body, the turntable is filled with renewable biological fillers, and a vertical greening system is arranged outside the turntable. The vertical greening system includes planted aquatic plants, and the roots of the aquatic plants pass through the vertical greening system and then extend into and hang on the outer surface of the turntable to absorb nutrients from the water body.

[0006] Furthermore, the vertical greening system includes a base belt fixed on the outside of the turntable, the base belt is a green absorbent cloth or sponge, which can store a large amount of water, and the green color is similar to the color of plants, and the overall visual experience is better. Net bags are arranged on the surface of the base belt, and aquatic plants are planted in the net bags.

[0007] Furthermore, a plurality of filler chambers are evenly arranged inside the turntable for placing the renewable biological filler.

[0008] Furthermore, the renewable biological filler includes one or more of dead branches, wood chips, bark, leaves, bamboo chips, and bamboo rings.

[0009] Furthermore, the rotating shaft of the turntable is higher than the liquid level of the reaction water body, so that 35%-45% of the turntable surface is immersed in water and the rest is exposed to the air.

[0010] Furthermore, it also includes a structural support, one end of which is fixed in the reaction water body, and the other end is rotatably connected to the rotating shaft.

[0011] Furthermore, it also includes a circulation pump and a pipeline system. The circulation pump is arranged in the reaction water body, and its output end is connected to the pipeline system to transport water in the reaction water body to the top of the turntable. The falling water impacts the turntable and drives the turntable to rotate.

[0012] Furthermore, the pipeline system includes a delivery pipe and a water distribution and shower pipe, the water distribution and shower pipe is arranged on the top of the turntable, and the delivery pipe connects the water distribution and shower pipe with the circulation pump.

[0013] Furthermore, water buckets are evenly arranged on the outer circumference of the turntable, and water flows into the water buckets through a pipeline system, and the gravity of the water accumulated in the water buckets is used to drive the turntable to rotate.

[0014] Furthermore, a control system is also included, and the control system is used to monitor the properties and parameters of water in the reaction water body. In the case of a circulating pump, the control system can also be connected to the circulating pump in communication to adjust the operating parameters of the circulating pump.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model sets a vertical greening system outside the facility, and plants participate in sewage treatment, which not only improves the removal effect of organic pollutants in sewage, but also makes the appearance and environment harmonious and unified, which is conducive to the construction of plant-participated, near-natural garden-type sewage treatment equipment; the sewage in the facility is self-circulated, the circulation coefficient is enhanced, the aeration effect is strengthened, and the level of dissolved oxygen is increased;

[0017] 2. The utility model uses a rotating disk that can rotate under water spraying to increase the impact of falling water on the filler. Driven by the hydraulic force, the filler in the rotating disk strengthens the contact between microorganisms and water and air during movement, which is also conducive to the separation and renewal of aging microbial membranes, and the operation effect is better;

[0018] 3. The turntable is filled with natural, renewable fillers to form a fluidized bed. The fillers are renewable materials taken from forests: dead branches, wood chips, bamboo chips, bamboo rings, etc. The renewable fillers purify pollutants in the water by cultivating efficient microbial strains growing on the fillers to form biofilms, which meets the needs of low-carbon and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the exterior structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0021] In the attached figure:

[0022] 1-reaction water body; 2-turntable; 3-vertical greening system; 4-structural support; 5-circulation pump; 6-transmission pipe; 7-water distribution and sprinkler pipe; 8-water bucket; 9-control system. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. In order to better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0024] The same or similar reference numerals in the drawings of the embodiments of the present utility model correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "front", "rear", "left", "right" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for exemplary explanations and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances. In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features.

[0025] Embodiment 1

[0026] like Figure 1 As shown, this embodiment provides a biological turntable sewage treatment equipment, which is suitable for forests and woodland parks. The biological turntable sewage treatment equipment includes a reaction water body 1, and a turntable 2 is arranged in the reaction water body 1. The turntable 2 can be rotated by hydraulic power without external energy input. The lower part of the turntable 2 is immersed in the reaction water body 1, and the upper part is exposed to the air. The turntable 2 is filled with renewable biological fillers. When the turntable 2 rotates, the renewable biological fillers are alternately in contact with sewage and air, which is conducive to the separation and renewal of aging microbial membranes. In order to further improve the treatment effect of this equipment on sewage, especially the removal effect of organic pollutants, a vertical greening system 3 is arranged on the outside of the turntable 2. The vertical greening system 3 includes planted aquatic plants. The roots of the aquatic plants pass through the vertical greening system 3 and extend into and hang on the outer surface of the turntable 2, absorb nutrients from the water body, and participate in the sewage treatment process.

[0027] Before the operation of the biological rotary disk sewage treatment equipment, the forest residues (such as branches, bamboo chips, etc.) are first graded and pre-treated, and then filled into the rotary disk 2 as renewable biological fillers. Driven by hydraulic power, the sewage is fully in contact with the renewable biological fillers. The renewable biological fillers in the rotary disk 2 strengthen the contact between microorganisms and water and air during movement, which is also conducive to the separation and renewal of aging microbial membranes, thereby completing the biofilm sewage treatment process. The sewage then falls back into the reaction water body 1, and the sewage treatment effect is judged by detecting the parameters of the sewage in the reaction water body 1.

[0028] The vertical greening system 3 includes a base belt fixed on the outside of the turntable 2. The base belt is a green absorbent cloth that can store water, and the green color is similar to the color of the plant, and the overall visual experience is better. Net bags are arranged on the surface of the base belt, and aquatic plants are planted in the net bags. The aquatic plants are plants such as green radish and copper coin grass, which can be adjusted according to the water environment of the actual application of the equipment. The root system of aquatic plants can assist in absorbing nutrients (i.e., organic pollutants) in sewage and participate in the process of biological turntable sewage treatment. At the same time, the biological turntable sewage treatment equipment covered with the vertical greening system 3 is also more unified with the natural environment in appearance. Whether it is far or near, it is difficult for tourists to find the turntable 2 covered by the vertical greening system 3, which has the effect of integrating into the environment visually, so that the biological turntable sewage treatment equipment will not make tourists feel abrupt when it is set in a natural water body, which conforms to the concept of constructing plant-participating and near-natural garden-type sewage treatment equipment.

[0029] The reaction water body 1 is a stainless steel water tank, and its length, width and height are 2000 mm, 1500 mm and 750 mm respectively. The turntable 2 is also a hollow structure made of stainless steel material, and small holes are evenly opened on the outer surface. Its diameter and width are 1300 mm and 670 mm respectively. According to the size of the turntable 2, the internal filler volume is 0.796 cubic meters. The greening area of ​​the vertical greening system 3 arranged outside the turntable 2 is about 3 square meters. In this embodiment, a circulating pump 5 is used to extract and transport the sewage in the reaction water body 1 to the top of the turntable 2, and the impact of the sewage is used to drive the turntable 2 to rotate. The circulating water volume of the circulating pump 5 is 4-9 cubic meters per hour. The chemical oxygen demand (CODcr), turbidity, ammonia nitrogen, total nitrogen and total phosphorus of the sewage in the reaction water body 1 are monitored using monitoring equipment. The monitoring results are shown in Table 1:

[0030] Table 1 Experimental example sewage parameter detection effect table

[0031]

[0032] As a comparative example, another biological rotary disk sewage treatment equipment is set up. Unlike the aforementioned biological rotary disk sewage treatment equipment, the comparative example equipment does not have the vertical greening system 3 outside the rotary disk 2. The two biological rotary disk sewage treatment equipment use the same sewage source. Similarly, the chemical oxygen demand (CODcr), turbidity, ammonia nitrogen, total nitrogen, and total phosphorus of the sewage in the reaction water body 1 are monitored using monitoring equipment. The monitoring results are shown in Table 2:

[0033] Table 2 Comparative example sewage parameter detection effect table

[0034]

[0035] From the above table, it can be concluded that the biological rotary disk sewage treatment equipment equipped with the vertical greening system 3 can achieve a removal rate of 40% and 42% for CODcr and turbidity of sewage in 24 hours, and a removal rate of 44% and 59% in 48 hours, respectively. Compared with the biological rotary disk sewage treatment equipment without the vertical greening system 3 (i.e., the comparative example), the removal rate increased by 28.1% and 7.1% (24 hours) year-on-year, reflecting that the degree of pollution by reducing substances and water-insoluble pollutants in sewage has been significantly reduced after using the vertical greening system 3. The biological rotary disk sewage treatment equipment equipped with the vertical greening system 3 can achieve a removal rate of nearly 86% and 75% for ammonia nitrogen and total nitrogen after 48 hours. Compared with the comparative example, the removal rate increased by 10.2% and 29.6% year-on-year, which is conducive to avoiding eutrophication of water bodies and increasing the dissolved oxygen content in water bodies. The total nitrogen and total phosphorus content of sewage treated by the biological rotary disk sewage treatment equipment is suitable for irrigation of crops.

[0036] In this embodiment, a stainless steel water tank is used as the reaction water body 1 to facilitate the quantification of experimental parameters in scientific experiments. In practical applications or other embodiments, the reaction water body 1 can also be a natural water body such as a small wetland, a pond, a ditch, or an artificial water body such as a water treatment structure, or a combination of any of the above multiple water bodies.

[0037] Embodiment 2

[0038] like Figure 1 as well as Figure 2 As shown, this embodiment is improved on the basis of the first embodiment, and the renewable biological filler used in this embodiment includes one or more of dead branches, wood chips, bark, leaves, bamboo chips, and bamboo rings. In actual use, the renewable biological filler will clump and adhere due to long-term immersion, resulting in dynamic balance failure of the turntable 2. To solve this problem, this embodiment is evenly provided with a number of filler chambers (not shown in the figure) inside the turntable 2 for placing the renewable biological filler. The filler chamber divides the space inside the turntable 2 into a number of evenly spaced spaces, thereby solving the problem of dynamic balance and making the turntable 2 rotate more smoothly.

[0039] The turntable 2 is a hollow structure, which forms a good ventilation state, so that the sewage will complete the aeration process when falling, and in the process of contact with the renewable biological filler, the three (sewage, air, filler) can fully contact, thereby obtaining a larger pollutant mass transfer rate, which is beneficial to the degradation of organic matter.

[0040] In some other embodiments, the renewable biological filler can also be loaded into a plastic ball (not shown in the figure). The plastic ball is hollow, and the hollow area is smaller than that of most renewable biological fillers. When the renewable biological filler is loaded inside the plastic ball, it can also prevent the renewable biological fillers from sticking together, thereby avoiding affecting the dynamic balance of the turntable 2.

[0041] Embodiment 3

[0042] See also Figure 1 , Figure 2 This embodiment is improved on the basis of the first or second embodiment. Specifically, a structural support 4 is provided. The structural support 4 is a hard metal tube, the lower end of which is fixed in the reaction water body 1, and the upper end is rotatably connected to the rotating shaft of the turntable 2. Two structural supports 4 are provided on one side of the turntable 2 to form a triangular structure, which is conducive to stability.

[0043] In order to maximize the treatment effect of the biological rotating disk on sewage, the rotating shaft of the rotating disk 2 is higher than the liquid level of the reaction water body 1, so that 45% of the surface of the rotating disk 2 is immersed in water and 55% is exposed to the air. Of course, in some other embodiments, the proportion of the surface of the rotating disk 2 immersed in water can also be adjusted to any proportion within the range of 35%-45%, and the rest is exposed to the air. The operating speed of the rotating disk 2 is 1.5-3 rpm, and the peripheral linear speed of the rotating disk 2 is about 15 m / min.

[0044] In addition, in order to optimize the water treatment effect of the biological turntable, the present embodiment is also provided with a water circulation system, including a circulation pump 5 and a piping system, wherein the piping system further includes a delivery pipe 6 and a water distribution and shower pipe 7, both of which are made of plastic material. The delivery pipe 6 is arranged on one of the side surfaces of the turntable 2, one end of which is connected to the circulation pump 5, and the other end of which extends to the top surface of the turntable 2 and is connected to the water distribution and shower pipe 7. The water distribution and shower pipe 7 is horizontally arranged on the top of the turntable 2, and a small hole is opened at the bottom of the water distribution and shower pipe 7, through which sewage can be sprayed out and evenly fall on the turntable 2, which has the effect of water impact on the turntable 2 and drives the turntable 2 to rotate.

[0045] In some other embodiments, water buckets 8 are evenly arranged on the outer circumference of the turntable 2, and water flows into the water buckets 8 through a pipeline system, and the gravity of the water accumulated in the water buckets 8 is used to drive the turntable 2 to rotate. The running speed of the turntable 2 is controlled by the flow rate of the circulating pump 5.

[0046] The biofilter tower described in this embodiment further includes a control system 9, which is used to monitor the properties and parameters of water in the reaction water body 1 and communicate with the circulation pump 5 to adjust its operating parameters.

[0047] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A biological rotary disk sewage treatment equipment, comprising a reaction water body (1) for receiving falling water, and a rotary disk (2) arranged in the reaction water body (1), the lower part of the rotary disk (2) being immersed in the reaction water body (1), characterized in that: The turntable (2) is filled with renewable biological fillers, and a vertical greening system (3) is arranged outside the turntable (2). The vertical greening system (3) includes planted aquatic plants, and the roots of the aquatic plants pass through the vertical greening system (3) and then extend into and hang on the outer surface of the turntable (2) to absorb nutrients from the water body.

2. The biological rotary disk sewage treatment equipment according to claim 1 is characterized in that: The vertical greening system (3) comprises a base belt fixed on the outside of the rotating disk (2), and net bags are arranged on the surface of the base belt, and aquatic plants are planted in the net bags.

3. The biological rotary disk sewage treatment equipment according to claim 1 is characterized in that: A plurality of filler chambers are evenly arranged inside the rotating disk (2) for placing the renewable biological filler.

4. The biological rotary disk sewage treatment equipment according to claim 3 is characterized in that: The renewable biological filler includes one or more of dead branches, wood chips, bark, leaves, bamboo chips, and bamboo rings.

5. The biological rotary disk sewage treatment equipment according to claim 1 is characterized in that: The rotating shaft of the rotating disk (2) is higher than the liquid level of the reaction water body (1), so that 35%-45% of the surface of the rotating disk (2) is immersed in water, and the rest is exposed to the air.

6. The biological rotary disk sewage treatment equipment according to claim 5 is characterized in that: It also comprises a structural support (4), one end of which is fixed in the reaction water body (1), and the other end of which is rotatably connected to the rotating shaft.

7. The biological rotary disk sewage treatment equipment according to claim 1 is characterized in that: It also includes a circulation pump (5) and a pipeline system. The circulation pump (5) is arranged in the reaction water body (1), and its output end is connected to the pipeline system to transport water in the reaction water body (1) to the top of the turntable (2). The falling water drives the turntable (2) to rotate.

8. The biological rotary disk sewage treatment equipment according to claim 7 is characterized in that: The pipeline system comprises a delivery pipe (6) and a water distribution and shower pipe (7), wherein the water distribution and shower pipe (7) is arranged on the top of the turntable (2), and the delivery pipe (6) connects the water distribution and shower pipe (7) and the circulation pump (5).

9. The biological rotary disk sewage treatment equipment according to claim 8, characterized in that: The outer circumferential surface of the rotating disk (2) is evenly provided with water buckets (8), and water flows into the water buckets (8) through a pipeline system, and the gravity of the water accumulated in the water buckets (8) is used to drive the rotating disk (2) to rotate.

10. The biological rotary disk sewage treatment equipment according to claim 1, characterized in that: Also included is a control system (9) for monitoring the properties and parameters of water in the reaction water body (1).

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