Ladder biological membrane filler sewage treatment device

Abstract

The utility model provides a stepped biological membrane filler sewage treatment device, which relates to the technical field of sewage treatment and comprises a sewage treatment tank and an aeration component. A plurality of water treatment cavities which are communicated in sequence are arranged in the sewage treatment tank; a biological membrane assembly is arranged in each water treatment cavity; the biological membrane assembly comprises a fixed frame body, a water permeable net and an adsorption filler, and microorganisms for degrading organic matters are adsorbed in the adsorption filler. The sewage treatment tank has the beneficial effects that the biological membrane component of the sewage treatment tank can adsorb and fix microorganisms through the adsorption filler, so that a fiber carrier is provided for growth and reproduction of the microorganisms, a stable biological membrane is formed, and the content of the microorganisms in the biological membrane component is improved, so that the treatment efficiency of the biological membrane component on organic matters in sewage is enhanced; the operation cost of the whole treatment process is reduced, and different types of microbial strains can be implanted into the plurality of biological membrane assemblies, so that microorganisms are enriched step by step, and the effect of treating organic matters in the sewage is ensured.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a stepped biofilm packing wastewater treatment device. Background Technology

[0002] Industries such as pesticide manufacturing, pharmaceutical and chemical production, and dye production generate large amounts of organic wastewater. Among existing organic wastewater treatment technologies, biofilm methods are widely used due to their high efficiency and stability. However, most existing wastewater treatment devices use single microbial species, which are difficult to adapt to the complex and diverse organic components in wastewater. Different organic compounds require specific microbial species for degradation; a single species cannot achieve simultaneous and efficient treatment of multiple pollutants, resulting in low removal rates for recalcitrant organic compounds and difficulty in consistently meeting effluent quality standards. Furthermore, the biofilm in existing wastewater treatment devices has limited adsorption capacity for microorganisms, leading to slow biofilm formation and insufficient microbial enrichment. In addition, their structural design often fails to optimize fluid distribution, resulting in insufficient contact between wastewater and the biofilm, further reducing the degradation efficiency of organic matter.

[0003] Therefore, there is an urgent need to develop a new type of wastewater treatment device that can improve wastewater treatment efficiency and reduce operating costs by optimizing the packing structure, enhancing the adsorption capacity of microorganisms, and achieving multi-species synergistic degradation. Utility Model Content

[0004] In view of this, the present invention provides a stepped biofilm packing wastewater treatment device, including a wastewater treatment tank and an aeration assembly;

[0005] The wastewater treatment tank is provided with an inlet and an outlet at both ends, and the wastewater treatment tank is provided with multiple water treatment chambers connected in sequence; the water treatment chambers at both ends are respectively connected to the inlet and the outlet.

[0006] Each water treatment chamber is equipped with a biofilm assembly; the biofilm assembly includes a fixed frame, a permeable mesh, and an adsorption packing material. The permeable mesh is fixed to the front and back of the fixed frame, and the adsorption packing material is filled between the two permeable meshes. The adsorption packing material contains microorganisms that degrade organic matter.

[0007] The aeration assembly includes an air guide pipe and multiple aeration pipes. The air guide pipe is connected to an aeration pump, and all aeration pipes are connected to the air guide pipe. The aeration pipes extend through the side wall of the sewage treatment tank to the bottom of the biofilm assembly, and aeration holes are distributed on the aeration pipes.

[0008] Furthermore, the wastewater treatment tank is equipped with a support plate, and the support plate has connecting holes. The water treatment chamber is located in the cavity above the support plate, and the biofilm assembly is supported on the support plate.

[0009] Furthermore, each of the water treatment chambers is provided with a set of card slots, each set of card slots includes two card slots, each card slot is provided with an installation slot, the two installation slots are aligned with each other, the card slots are fixed to the inner wall of the sewage treatment tank, and the two sides of the fixing frame are respectively limited to the two installation slots.

[0010] Furthermore, the wastewater treatment tank is provided with multiple baffles, which divide the cavity inside the wastewater treatment tank into multiple water treatment chambers. The baffles form baffle openings on the inner wall of the wastewater treatment tank, and the baffle openings are arranged in an alternating pattern.

[0011] Furthermore, a filter screen is provided in the water treatment chamber connected to the water inlet, and the two sides of the filter screen are respectively connected to the baffle plate and the side wall of the sewage treatment tank.

[0012] Furthermore, the bottom of the wastewater treatment tank is also equipped with a sludge discharge port.

[0013] Furthermore, a permeable water separator is also fixedly installed inside the fixed frame, and the permeable water separator is located between the two permeable water separators.

[0014] Furthermore, the top of the sewage treatment tank is also equipped with a gas collection hood, and the top of the gas collection hood is equipped with an exhaust port.

[0015] Furthermore, the air guide pipe is fixed to the outer wall of the sewage treatment tank by a fixing seat, and the number of air guide pipes is the same as the number of water treatment chambers. Each air guide pipe extends to the area directly below the biofilm assembly in a water treatment chamber.

[0016] Furthermore, an overflow plate is provided in the water treatment chamber connected to the outlet. The overflow plate is provided with an overflow port and an overflow slot. A slot plate is provided in the overflow slot. The slot plate is adjustable within the overflow slot. The slot plate is used to adjust the opening of the overflow port.

[0017] The beneficial effects of this utility model of a stepped biofilm packing wastewater treatment device are as follows: The wastewater treatment device includes a wastewater treatment tank and an aeration assembly; the wastewater treatment tank has multiple sequentially connected water treatment chambers; each water treatment chamber contains a biofilm assembly; the biofilm assembly includes a fixed frame, a permeable net, and adsorption packing, the adsorption packing containing microorganisms for degrading organic matter; the aeration pipe of the aeration assembly is located below the biofilm assembly; wherein the adsorption packing can partially adsorb microorganisms, providing a fibrous carrier for the growth and reproduction of microorganisms, enabling microorganisms to accumulate within the adsorption packing, forming a stable biofilm, and improving... The biofilm component has a high microbial content, which enhances its efficiency in treating organic matter in wastewater and reduces the operating cost of the entire treatment process. Furthermore, the wastewater treatment device includes multiple sequentially connected water treatment chambers. Different types of microorganisms are implanted into the biofilm components in different chambers, achieving a stepwise enrichment of microorganisms and forming a beneficial combination of biological and food chains. This allows the wastewater treatment device to utilize different microorganisms to degrade recalcitrant organic matter in wastewater in stages, thereby improving its COD removal rate and ensuring effective treatment of organic matter in wastewater. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a stepped biofilm packing wastewater treatment device according to an embodiment of this utility model.

[0019] Figure 2 yes Figure 1 Cross-sectional view at point AA.

[0020] Figure 3 This is a schematic diagram of the internal structure of a stepped biofilm packing wastewater treatment device according to an embodiment of this utility model.

[0021] Figure 4 This is a cross-sectional view of a biofilm module in a stepped biofilm packing wastewater treatment device according to an embodiment of this utility model.

[0022] In the above diagram: 1-Sewage treatment tank, 11-Tank support, 12-Inlet, 13-Outlet, 14-Sewage outlet, 2-Gas collection hood, 21-Exhaust outlet, 3-Baffle plate, 4-Fixed frame, 41-Permeable mesh, 42-Permeable water separator, 43-Adsorption packing, 44-Card slot, 5-Support plate, 51-Connecting hole, 6-Air guide pipe, 61-Aeration pipe, 7-Filter screen, 8-Overflow plate, 81-Overflow port, 82-Plug-in plate. Detailed Implementation

[0023] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0024] Please refer to Figures 1 to 4 The present invention relates to a stepped biofilm packing wastewater treatment device, comprising a wastewater treatment tank 1 and an aeration assembly.

[0025] The sewage treatment tank 1 is a rectangular box. The lower end of the sewage treatment tank 1 is supported by the box support 11, and its bottom is suspended. The sewage treatment tank 1 has an inlet 12 and an outlet 13 at both ends. The sewage treatment tank 1 has a plurality of water treatment chambers connected in sequence. The water treatment chambers at both ends are connected to the inlet 12 and the outlet 13 respectively. In this embodiment, the number of water treatment chambers is six.

[0026] Each water treatment chamber is equipped with a biofilm assembly. The biofilm assembly includes a fixed frame 4, a permeable mesh 41, and an adsorption filler 43. The permeable mesh 41 is fixed to both sides of the fixed frame 4, and the adsorption filler 43 fills the space between the two permeable meshes 41. The adsorption filler 43 adsorbs microorganisms for degrading organic matter. In this embodiment, the adsorption filler 43 is made of nylon fiber material with dispersed adsorption of carbon nanotubes. This material increases the specific surface area through the dispersed adsorption of carbon nanotubes and has high strength. The amount of microorganisms attached to this adsorption filler 43 is 3.6-6 times that of conventional fillers. This adsorption filler 43 can fully adsorb and fix microorganisms to form a biofilm capable of degrading organic matter. Furthermore, in this embodiment, different types of microorganisms are implanted in different water treatment chambers.

[0027] The aeration assembly includes an air guide pipe 6 and multiple aeration pipes 61. The air guide pipe 6 is connected to an aeration pump, and all aeration pipes 61 are connected to the air guide pipe 6. The aeration pipes 61 extend through the side wall of the wastewater treatment tank into the wastewater treatment tank 1, and aeration holes are distributed on the aeration pipes 61. Specifically, the air guide pipe 6 is fixed to the outer wall of the wastewater treatment tank 1 by a fixing seat. The number of air guide pipes 6 is the same as the number of water treatment chambers, and each air guide pipe 6 extends directly below the biofilm assembly in a water treatment chamber.

[0028] The wastewater treatment tank 1 is also equipped with a gas collection hood 2 on top, and the gas collection hood 2 has an exhaust port 21 on top. The exhaust port 21 is used to connect to the exhaust gas treatment device so that the exhaust gas generated during the wastewater treatment process is centrally treated and then discharged.

[0029] In operation, the wastewater to be treated enters the wastewater treatment tank 1 through inlet 12 and then passes through all the water treatment chambers sequentially. Different types of microorganisms are adsorbed and immobilized within the biofilm components of each chamber. These microorganisms, under aeration, can degrade different organic compounds, achieving simultaneous and efficient treatment of multiple pollutants. This improves the efficiency of organic matter treatment in wastewater and reduces operating costs. Furthermore, when treating recalcitrant organic matter, the stepped biofilm wastewater treatment device can achieve a multi-species synergistic degradation effect through the selection and matching of microbial strains, thereby improving the removal rate of recalcitrant organic matter and ensuring stable effluent quality that meets standards.

[0030] In a preferred embodiment, the wastewater treatment tank 1 is provided with a support plate 5, and the support plate 5 has connecting holes 51 distributed on it. The water treatment chamber is located in the cavity above the support plate 5. The biofilm assembly is supported on the support plate 5. The bottom of the wastewater treatment tank 1 has a funnel-shaped structure and a sewage outlet 14 is also provided at the bottom of the wastewater treatment tank 1. The sludge generated during the wastewater treatment process can pass through the connecting holes 51 and accumulate at the bottom of the wastewater treatment tank 1, so as to be discharged from the sewage outlet 14 periodically.

[0031] In a preferred embodiment, each of the water treatment chambers is provided with a set of mounting slots 44, and each set of mounting slots 44 includes two mounting slots 44. Both mounting slots 44 are provided with mounting grooves, which are aligned with each other. The mounting slots 44 are fixed to the inner wall of the sewage treatment tank 1. The two sides of the fixing frame 4 are respectively confined within the two mounting grooves. This structure can ensure that the biofilm assembly can be stably and vertically installed in the sewage treatment tank 1, and can be easily removed, facilitating the cleaning and replacement of the biofilm assembly.

[0032] In a preferred embodiment, the wastewater treatment tank 1 is provided with multiple baffles 3, which divide the cavity inside the wastewater treatment tank 1 into multiple water treatment chambers. The baffles 3 form baffle openings on the inner wall of the wastewater treatment tank 1, and the baffle openings are arranged in an alternating manner. This ensures that the wastewater in the wastewater treatment tank 1 can pass through all the water treatment chambers in sequence, so that the wastewater can be treated by all the biofilm components in sequence. This baffle structure can significantly extend the actual residence time of wastewater in the device, avoid short-circuiting, and ensure that the wastewater and biofilm are in full contact.

[0033] In a preferred embodiment, a filter screen 7 is provided inside the water treatment chamber connected to the inlet 12. The filter screen 7 is connected on both sides to the baffle plate 3 and the side wall of the wastewater treatment tank 1, respectively. The filter screen 7 is used to filter solid impurities in the wastewater. Solid impurities blocked by the filter screen 7 fall directly to the bottom of the wastewater treatment tank 1, preventing solid impurities from clogging the biofilm assembly.

[0034] In a preferred embodiment, a permeable water separator 42 is also fixedly installed inside the fixed frame 4, and the permeable water separator 42 is located between the two permeable nets 41; and the structure of the fixed frame 4 and the permeable net 41 can ensure the stability of the adsorption packing and have strong resistance to water flow impact load. The permeable water separator 42 can prevent the adsorption packing 43 from longitudinally accumulating between the two permeable nets 41, thereby improving the looseness of the adsorption packing 43 and ensuring that the microorganisms adsorbed on it are in full contact with the water.

[0035] In a preferred embodiment, an overflow plate 8 is provided in the water treatment chamber connected to the outlet 13. The overflow plate 8 is provided with an overflow port 81 and an overflow slot. A slot plate 82 is provided in the overflow slot. The slot plate 82 is height-adjustable and limited within the overflow slot. The slot plate 82 is used to adjust the opening of the overflow port 81, thereby adjusting the flow rate of the overflow port 81.

[0036] In this document, the directional terms such as front, back, top, and bottom are defined based on the location of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0037] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stepped biofilm media wastewater treatment device, characterized by: The sewage treatment tank (1) and an aeration assembly are included. The sewage treatment tank (1) is provided with water inlets (12) and water outlets (13) at two ends, and is provided with a plurality of water treatment cavities which are sequentially communicated. Each water treatment cavity is provided with a biofilm assembly, and the biofilm assembly comprises a fixed frame (4), water-permeable nets (41) and adsorption fillers (43). The aeration assembly comprises a gas guide pipe (6) and a plurality of aeration pipes (61), the gas guide pipe (6) is connected with an aeration pump, all the aeration pipes (61) are connected with the gas guide pipe (6), the aeration pipes (61) extend to below the biofilm assembly through the side wall of the sewage treatment tank (1), and the aeration pipes (61) are provided with aeration holes.

2. The stepped biofilm media wastewater treatment device of claim 1, wherein: The sewage treatment tank (1) is provided with a support plate (5), the support plate (5) is provided with communication holes (51), the water treatment cavities are located in cavities above the support plate (5), and the biofilm assembly is supported on the support plate (5).

3. The stepped biofilm media wastewater treatment device of claim 2, wherein: Each water treatment cavity is provided with a set of clamping groove seats (44), each set of clamping groove seats (44) comprises two clamping groove seats (44), the two clamping groove seats (44) are both provided with mounting clamping grooves which are aligned with each other, the clamping groove seats (44) are fixed to the inner wall of the sewage treatment tank (1), and the fixed frame (4) is limited in the two mounting clamping grooves.

4. The stepped biofilm media wastewater treatment device of claim 1, wherein: The sewage treatment tank (1) is provided with a plurality of baffle plates (3), the baffle plates (3) divide the cavity in the sewage treatment tank (1) into a plurality of water treatment cavities, the baffle plates (3) form baffle openings with the inner wall of the sewage treatment tank (1), and the baffle openings are staggered.

5. The stepped biofilm media wastewater treatment device of claim 4, wherein: The water treatment cavity which is communicated with the water inlet (12) is provided with a filter screen (7), and the filter screen (7) is connected to the baffle plate (3) and the side wall of the sewage treatment tank (1) respectively.

6. The stepped biofilm media wastewater treatment device of claim 1, wherein: The sewage treatment tank (1) is further provided with a sludge discharge port (14) at the bottom.

7. The stepped biofilm media wastewater treatment device of claim 1, wherein: The fixed frame (4) is further provided with a water-permeable partition net (42) fixedly arranged therein, and the water-permeable partition net (42) is located between the two water-permeable nets (41).

8. The stepped biofilm media wastewater treatment device of claim 1, wherein: The sewage treatment tank (1) is further provided with a gas collecting cover (2) at the top, and the gas collecting cover (2) is provided with an exhaust port (21) at the top.

9. The stepped biofilm media wastewater treatment device of claim 1, wherein: The gas guide pipe (6) is fixed to the outer wall of the sewage treatment tank (1) through a fixed seat, the number of the gas guide pipes (6) is the same as that of the water treatment cavities, and each gas guide pipe (6) extends to directly below the biofilm assembly in a water treatment cavity.

10. The stepped biofilm media wastewater treatment device of claim 1, wherein: An overflow plate (8) is arranged in the water treatment cavity in communication with the water outlet (13), the overflow plate (8) is provided with an overflow port (81) and an overflow slot, the overflow slot is provided with a slot plate (82), the slot plate (82) is arranged in the overflow slot in a lifting manner, and the slot plate (82) is used for adjusting the opening degree of the overflow port (81).

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