Integrated sewage treatment equipment

Abstract

The utility model discloses integrated sewage treatment equipment which comprises a coagulation device and a sewage treatment device, the precipitation device is connected with the first water outlet; the filtering device is connected with the second water outlet and sequentially comprises a first filter tank, a second filter tank, a third filter tank and a third filter tank, and a denitrification biological filter material layer is arranged in the first filter tank; the second filter tank is connected with the third water outlet, and an aeration biological filter material layer is arranged in the second filter tank; and the disinfection device comprises an ultraviolet disinfection mechanism. The integrated sewage treatment equipment disclosed by the utility model is relatively small in size, easy in occupied area distribution, convenient to implement, and capable of being used after being built in most regions, and all parts in the equipment are clearly divided, so that the use and subsequent maintenance are convenient, and the sewage is fully treated and purified; and miscellaneous water standard discharge is achieved.

Description

Technical Field

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

[0002] Currently, my country generates a large volume of wastewater daily, and how to treat it efficiently and economically is an urgent technical problem to be solved. The main sources of wastewater in my country include industrial wastewater, agricultural wastewater, and domestic sewage. Industrial wastewater is a significant source of pollution, not only in large quantities and over a wide area, but also in its complex composition, high toxicity, and difficulty in treatment. Agricultural wastewater is high in organic matter, plant nutrients, and pathogenic microorganisms, as well as pesticide and fertilizer content. Domestic sewage mainly consists of various detergents, wastewater, garbage, and excrement used in urban life, mostly non-toxic inorganic salts, but containing high levels of nitrogen, phosphorus, sulfur, and pathogenic bacteria. The increasingly severe water pollution has posed a significant threat to human survival and safety, becoming a major obstacle to human health, economic, and sustainable social development. Currently, wastewater treatment largely relies on wastewater treatment plants, but these plants have limited space and cannot provide precise and rapid treatment.

[0003] In some remote areas, due to the lack of large-scale sewage treatment facilities in operation, the generated sewage is discharged after only minor treatment or even without treatment, resulting in ecological damage and endangering people's health. Utility Model Content

[0004] The purpose of this utility model is to provide a small integrated sewage treatment device to solve the problem that when there is no large sewage treatment equipment or it is inconvenient to implement large sewage treatment equipment, sewage is discharged after only micro-treatment or even without treatment, which makes sewage treatment impossible, causing ecological damage and endangering people's health.

[0005] To solve the above problems, this utility model achieves its purpose through the following technical solution:

[0006] This utility model proposes an integrated sewage treatment device, comprising:

[0007] A coagulation device includes: a first chamber, a wastewater inlet on the first chamber, and a first outlet on the side of the first chamber near the bottom; and an impeller assembly disposed within the first chamber.

[0008] A sedimentation device connected to the first outlet, the sedimentation device comprising: a second chamber, wherein a second outlet is provided on the side of the second chamber near the top; and an inclined tube sedimentation tank located within the second chamber, wherein a plurality of inclined tubes are provided in the inclined tube sedimentation tank.

[0009] A filtration device, connected to the second outlet, comprises, in sequence: a first filter tank containing a denitrifying biological filter media layer; a third outlet located on one side of the first filter tank and above the denitrifying biological filter media layer; a second filter tank connected to the third outlet, containing an aerated biological filter media layer; and a fourth outlet located on one side of the second filter tank and above the aerated biological filter media layer.

[0010] The disinfection device is connected at its bottom to the fourth water outlet. The disinfection device includes: a third chamber; an ultraviolet disinfection mechanism disposed in the third chamber; and a fifth water outlet located at the top of the disinfection device.

[0011] Preferably, the impeller assembly includes:

[0012] Several impellers;

[0013] A number of fixed supports are spaced apart, and a number of impellers are respectively installed on the fixed supports;

[0014] Several upper guide vanes, one end of which is set at the top of the first chamber;

[0015] Several lower guide vanes, one end of which is located at the bottom of the first chamber;

[0016] A plurality of upper guide plates and a plurality of lower guide plates are staggered to isolate the first chamber into a plurality of coagulation zones that are connected in sequence, and each coagulation zone is provided with at least one impeller.

[0017] Preferably, the coagulation device further includes: an inlet pipe connected to the sewage inlet; and a flow stabilizer plate disposed in the first chamber at the end of the inlet pipe.

[0018] Preferably, the coagulation device further includes: a first support, which is disposed below the first chamber for supporting the first chamber.

[0019] Preferably, the coagulation device further includes: a first water distribution pipe, the two ends of which are respectively connected to the first water outlet and the sedimentation device.

[0020] Preferably, the second chamber is divided into the following sections from top to bottom: a clear water area, an inclined tube area, a water distribution area, and a sludge discharge area. The second outlet is located above the clear water area. The inclined tube sedimentation tank is located within the inclined tube area. The end of the first water distribution pipe is connected to the bottom of the water distribution area. The sludge discharge area is equipped with a sludge discharge pipe.

[0021] Preferably, a second support is provided in the water distribution area, which is used to support the inclined tube sedimentation tank.

[0022] Preferably, the first filter further includes: a first backwash air inlet pipe, one end of which is located below the denitrifying biological filter layer; a first backwash water inlet pipe, one end of which is located below the denitrifying biological filter layer; and a first backwash drain pipe, which is located above the denitrifying biological filter layer. The other ends of the first backwash air inlet pipe, the first backwash water inlet pipe, and the first backwash drain pipe are respectively connected to external equipment. The first backwash air inlet pipe, the first backwash water inlet pipe, and the first backwash drain pipe are used to clean the denitrifying biological filter layer.

[0023] Preferably, the second filter further includes: a second backwash air inlet pipe, one end of which is located below the aerated biological filter media layer; a second backwash water inlet pipe, one end of which is located below the aerated biological filter media layer; and a second backwash drain pipe, one end of which is located above the aerated biological filter media layer. The other ends of the second backwash air inlet pipe, the second backwash water inlet pipe, and the second backwash drain pipe are respectively connected to external equipment. The second backwash air inlet pipe, the second backwash water inlet pipe, and the second backwash drain pipe are used to clean the aerated biological filter media layer.

[0024] Preferably, both the third outlet and the fourth outlet are provided with an anti-backflow mechanism, which includes: a ramp plate that slopes upward from the side away from the third outlet to the side near the third outlet or from the side away from the fourth outlet to the side near the fourth outlet; and a grid-shaped flow stabilizer that is disposed at the third outlet or the fourth outlet.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] This utility model discloses an integrated sewage treatment equipment that treats sewage through a coagulation device, a sedimentation device, a filtration device, and a disinfection device arranged in sequence. The integrated sewage treatment equipment is small in size, easy to allocate space, and easy to implement. It can be set up and used immediately in most areas. Moreover, the various parts of the equipment are clearly divided, which facilitates use and subsequent maintenance, and ensures that the sewage is fully treated and purified. After being treated by the integrated equipment of this utility model, the sewage meets the discharge standards for miscellaneous water use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an integrated sewage treatment device provided in an embodiment of the present utility model;

[0028] Figure 2This is a schematic diagram of the coagulation device provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the precipitation device provided in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the first filter structure provided in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the second filter structure provided in an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the disinfection device provided in one embodiment of the present invention.

[0033] Explanation of reference numerals in the attached drawings: 1-Coagulation device, 2-Sedimentation device, 3-Filtration device, 4-Disinfection device, 101-Impeller, 102-First support, 103-Inlet pipe, 104-First distribution pipe, 105-Flow stabilizer, 106-Lower guide plate, 107-Upper guide plate, 108-Fixed support, 110-First chamber, 201-Clear water zone, 202-Inclined tube zone, 203-Water distribution zone, 204-Sludge discharge zone, 205-Inclined tube sedimentation tank, 206-Second support, 207-Sludge discharge pipe, 208-Second distribution pipe, 210 - Second chamber, 301- First filter, 302- Second filter, 310- Denitrifying biological filter media layer, 311- Third water distribution pipe, 312- Grid-shaped flow stabilizer, 313- First backwash air inlet pipe, 314- First backwash water inlet pipe, 315- First backwash drain pipe, 316- Inclined plate, 320- Aerated biological filter media layer, 321- Fourth water distribution pipe, 322- Aeration pipe, 323- Second backwash water inlet pipe, 324- Second backwash air inlet pipe, 325- Return pipe, 326- Second backwash drain pipe, 401- Third chamber. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1 to 6The present invention provides a detailed description of a small-scale integrated sewage treatment device according to specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clarify the explanation of the embodiments of the present invention. Please refer to the accompanying drawings to make the objectives, features, and advantages of the present invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by the present invention, should still fall within the scope of the technical content disclosed in the present invention.

[0035] Given that in the absence of large-scale sewage treatment equipment or when it is inconvenient to implement large-scale sewage treatment equipment, sewage is discharged after only minor treatment or even without treatment, making sewage treatment impossible, causing ecological damage and endangering people's health.

[0036] refer to Figure 1 As shown in the figure, this embodiment provides an integrated wastewater treatment device, including: a coagulation device 1, a sedimentation device 2, a filtration device 3, and a disinfection device 4 connected in sequence. The water quality indicators of the influent and effluent before and after treatment are shown in Table 1 below, so that the effluent meets the standards for non-irrigated water.

[0037] refer to Figure 2 As shown, the coagulation device 1 includes: a first chamber 110, on which a sewage inlet is provided, and an inlet pipe 103 is connected to the inlet. Sewage enters the integrated sewage treatment equipment through the inlet pipe 103. At the same time, to ensure the stability of the inlet flow rate, a flow stabilizing plate 105 is provided at the end of the inlet pipe 103. A first outlet is provided on the side of the first chamber 110 near the bottom, and the first outlet is connected to a first distribution pipe 104. The first distribution pipe 104 discharges the sewage treated by the coagulation device 1 to the sedimentation device 2. An impeller assembly is provided inside the first chamber 110.

[0038] In this embodiment, the impeller assembly includes: a plurality of impellers 101, wherein a vertical-axis equal-diameter impeller is used for mechanical coagulation; a plurality of fixed supports 108 spaced apart, with the impellers 101 respectively disposed on the fixed supports 108; a plurality of upper guide plates 107, one end of which is fixedly disposed on the top of the first chamber 110, and the other end of which has a gap with the bottom of the first chamber 110; a plurality of lower guide plates 106, one end of which is fixedly disposed on the bottom of the first chamber, and the other end of which has a gap with the top of the first chamber 110; the plurality of upper guide plates 107 and the plurality of lower guide plates 103 are staggered to isolate the first chamber 110 into a plurality of sequentially connected coagulation regions, and each coagulation region is provided with at least one impeller 101. Figure 2 As shown, two lower guide plates 106 are provided, and an upper guide plate 107 is provided between the two lower guide plates 106. The two lower guide plates 106 and the upper guide plate 107 divide the first chamber 110 into four sequentially connected coagulation zones. In this embodiment, the coagulation device 1 further includes a first support 102, which is provided below the first chamber 110 to support the first chamber 110.

[0039] refer to Figure 3 As shown, the sedimentation device 2 is connected to the first outlet via a first distribution pipe 104. The sedimentation device 2 includes: a second chamber 210, with a second outlet on the side near the top of the second chamber 210, and a second distribution pipe 208 installed at the second outlet for discharging the wastewater treated by the sedimentation device 2 to the filter device 3; and an inclined tube sedimentation tank 205 located within the second chamber 210, containing several upwardly inclined tubes. The second chamber 210 is divided from top to bottom into: a clear water area 201, an inclined tube area 202, a water distribution area 203, and a sludge discharge area 204. The inclined tube sedimentation tank 205 is placed in the inclined tube area 202, the end of the first distribution pipe 104 is connected to the bottom of the water distribution area 203, and the sludge discharge area 204 is equipped with a sludge discharge pipe 207. A second support 206 is provided in the water distribution area 203, which is used to support the inclined tube sedimentation tank 205.

[0040] In this embodiment, the specific working principle of the sedimentation device 2 is as follows: Wastewater flowing in through the first distribution pipe 104 enters the water distribution area 203, where the flow rate of the wastewater is adjusted. The wastewater passes through the inclined tube sedimentation tank 205 in the inclined tube area 202, where particulate matter in the wastewater settles downwards along the inclined tubes. The inclined tubes in the sedimentation tank 205 accelerate the sedimentation of impurities in the wastewater. The impurities settle in the sludge discharge area 204, where sludge is collected by a sludge hopper and discharged by gravity. The sludge is discharged into the second chamber 210 through the sludge discharge pipe 207 installed within the sludge discharge area 204. Wastewater flows upwards through the inclined tube sedimentation tank 205, and the second outlet is located above the clear water area 201, discharging through the second drain pipe 208 to the filter device 3.

[0041] refer to Figure 4-5 As shown, the filtration device 3 is connected to the second outlet via a second drain pipe 208. The filtration device 3 sequentially includes: a first filter tank 301, which contains a denitrifying biological filter media layer 310 for primary filtration of wastewater; a third outlet, located on one side of the first filter tank 301 and above the denitrifying biological filter media layer 310, with a third water distribution pipe 311 at the third outlet; and a second filter tank 302, which is connected to the third outlet via the third water distribution pipe 311. Wastewater filtered by the first filter 301 is discharged through the third water distribution pipe 311 and enters the bottom of the second filter 302. The second filter 302 is provided with an aerated biological filter media layer 320 and an aeration pipe 322. The aeration pipe 322 is located below the aerated biological filter media layer 320. The aeration pipe 322 introduces gas into the second filter 302 from the outside, and the wastewater is further filtered through the aerated biological filter media layer 320. The fourth outlet is opened on one side of the second filter 302 and located above the aerated biological filter media layer 320.

[0042] Continue to refer to Figure 4 As shown, in this embodiment, the first filter 301 further includes: a first backwash air inlet pipe 313, which is located below the denitrifying biological filter media layer 310; a first backwash water inlet pipe 314, which is located below the denitrifying biological filter media layer 310; and a first backwash drain pipe 315, which is located above the denitrifying biological filter media layer 310.

[0043] The first backwash air inlet pipe 313, the first backwash water inlet pipe 314, and the first backwash drain pipe 315 are used to clean the denitrifying biological filter media layer 310. During the operation of the first filter tank 301, impurities, microbial metabolites, and detached biofilm in the wastewater gradually accumulate on the surface and in the pores of the denitrifying biological filter media layer 310. Over time, these accumulations can cause blockage of the filter tank, thereby affecting the filtration efficiency and treatment effect of the denitrifying biological filter media layer 310. The first backwash air inlet pipe 313 introduces gas (usually air) into the bottom of the first filter tank 301, causing the gas to form bubbles in the denitrifying biological filter media layer 310 and rise. These bubbles agitate the filter media layer during their ascent, loosening it and making it easier for impurities attached to the filter media layer to detach. The first backwash water inlet pipe 314 enters from the bottom of the first filter tank 301 or a specific inlet and flows upward under water pressure. The water flow will discharge the impurities that have fallen off due to the loose air intake through the first backwash drain pipe 315, thereby achieving the purpose of cleaning the denitrification biological filter media layer 310.

[0044] Continue to refer to Figure 4 As shown, the third outlet is equipped with an anti-backflow mechanism, which includes: a ramp plate 316, which slopes upwards from the side away from the third outlet to the side closer to the third outlet; and a grid-shaped flow stabilizer 312, which is located at the third outlet. The first backwash drain pipe 315 and the ramp plate 316 are located on opposite sides of the ramp plate 316. The first backwash drain pipe 315 is isolated from the third outlet by the ramp plate 316, preventing wastewater discharged during cleaning of the denitrifying biological filter media layer 310 from entering the third distribution pipe 311. The anti-backflow mechanism reduces the outflow velocity and prevents filter media loss.

[0045] Continue to refer to Figure 5 As shown, in this embodiment, the second filter 302 further includes: a second backwash air inlet pipe 324, which is located below the aerated biological filter media layer 320; a second backwash water inlet pipe 323, which is located below the aerated biological filter media layer 320; and a second backwash drain pipe 326, which is located above the aerated biological filter media layer 320.

[0046] The second backwash air inlet pipe 324, the second backwash water inlet pipe 323, and the second backwash drain pipe 326 are used to clean the aerated biological filter media layer. The second backwash air inlet pipe 324 introduces gas (usually air) into the bottom of the second filter tank 302, causing the gas to form bubbles in the aerated biological filter media layer 320 and rise. These bubbles, during their ascent, agitate the aerated biological filter media layer 320, loosening it and making it easier for impurities attached to the filter media layer to detach. The second backwash water inlet pipe 323 enters from the bottom of the second filter tank 302 and flows upwards under water pressure. The water flow carries away the impurities that have detached due to the air inlet through the second backwash drain pipe 326, thereby achieving the purpose of cleaning the aerated biological filter media layer 320.

[0047] Continue to refer to Figure 5 As shown, the fourth outlet is equipped with an anti-backflow mechanism, which includes: a ramp plate 316, which slopes upwards from the side away from the fourth outlet to the side closer to the fourth outlet; a grid-shaped flow stabilizer 312, which is located at the fourth outlet; and a second backwash drain pipe 326, which is located on both sides of the fourth outlet, with the second backwash drain pipe 326 isolated from the fourth outlet by the ramp plate 316. A return pipe 325 is used to drain wastewater overflowing from the aerated biological filter layer 320 after cleaning, preventing wastewater discharged during cleaning of the aerated biological filter layer 320 from entering the fourth distribution pipe 321.

[0048] refer to Figure 6 As shown, the bottom of the disinfection device 4 is connected to the fourth water outlet through the fourth water distribution pipe 321. The disinfection device 4 includes: a third chamber 401; an ultraviolet disinfection mechanism, which is disposed in the third chamber 401; and a fifth water outlet, which is opened at the top of the disinfection device for discharging treated wastewater.

[0049] In one specific embodiment, each coagulation zone has a width of 0.5m, a length of 1.5m, and a height of 1.5m. The height of the inclined tube zone 202 is set to 0.9m, the freeboard is 0.2m, the height of the clear water zone is 0.7m, the height of the water distribution zone is 0.5m, the height of the sludge discharge trough is 0.4m, the effective depth of the second chamber 210 is 2.1m, and the total height of the second chamber 210 is 2.7m. The sludge discharge time is 30s, and the flow velocity in the sludge discharge pipe is v=3m / s. The total volume of the first filter 301 is 1.125 m³. 3 The total area of ​​the first filter bed 301 is 1m². 2The filter tank is square with a side length of 1m. The first filter tank 301 has a freeboard of 0.25m, a water stabilization layer of 0.25m, a filter media layer of 1.5m, a support layer of 0.2m, and a water distribution chamber of 0.5m, for a total height of 2.6m. The second water distribution pipe 208 uses DN40 stainless steel pipe, and the third water distribution pipe 311 uses DN50 stainless steel pipe (DN is the nominal diameter). The main pipe of the first backwash inlet pipe 314 uses DN80 stainless steel pipe, and the branch pipes of the first backwash inlet pipe 314 use DN32 stainless steel pipe. There are 12 branch pipes of the first backwash inlet pipe 314, and each branch pipe has 6 2mm holes evenly distributed, for a total of 72 holes. The main pipe of the first backwash air inlet pipe 313 is made of DN32 stainless steel, and the branch pipes of the first backwash air inlet pipe 313 are made of DN15 stainless steel. There are 12 branch pipes, each with 12 2mm perforations, evenly distributed, for a total of 144 perforations arranged downwards at a 45-degree angle. An anti-backflow mechanism is installed. The effluent system uses a single weir, with a 60° slope plate 316 at the effluent edge and a grid-shaped flow stabilizer 312 installed to reduce the effluent flow velocity and prevent filter media loss. The aerated biological filter media layer 320 has a height of 1.5m. The second filter tank 302 is designed as a rectangle with specific dimensions of 1×3.5m, a filter tank freeboard of 0.3m, a water stabilization layer of 0.2m, a filter media layer of 1.5m, a support layer of 0.2m, and a buffer water distribution area of ​​0.5m. The total height of the second filter tank 302 is 2.6m. A DN100 vent pipe is reserved at the bottom for connection to the sludge discharge tank. Both the third water distribution pipe 311 and the fourth water distribution pipe 321 are made of DN50 stainless steel pipe. The second filter tank 302 uses long-handled filter heads with a low-resistance system. Each filter head has a slit width of 2mm and a slit area of ​​320mm² / head, requiring a total of 132 filter heads. The main pipe of the second backwash inlet pipe 323 is made of DN125 stainless steel pipe, and the branch pipes are made of DN32 stainless steel pipe. The design includes 44 branch pipes, each with 6 evenly distributed 2mm perforations. The main pipe of the second backwash air inlet pipe 324 is made of DN60 stainless steel pipe, and the branch pipes are made of DN15 stainless steel pipe. The design includes 44 branch pipes, each with 12 evenly distributed 2mm perforations arranged at a 45-degree downward angle. An anti-backflow mechanism is installed on one side of the second backwash drain pipe. The effluent system uses a single weir, with a 60° inclined plate 316 installed at the effluent edge and a grid-shaped flow stabilizer 312 to reduce the effluent flow velocity and prevent filter media loss. The disinfection device 4 uses flow-through ultraviolet disinfection and is connected to the effluent outlet of the pre-filter 302. The fourth water distribution pipe 321 has a diameter of 40mm, and the water flow direction is set from bottom to top to avoid the water flow not being full and affecting the ultraviolet treatment effect. The reactor is fixed to the side of the filter tank with welded clamps.As shown in Table 1, which serves as a reference for the influent and effluent water quality, this integrated wastewater treatment equipment can effectively purify wastewater and meet the discharge standards for non-recyclable water. For detailed design calculations and parameters, please refer to the "Integrated Wastewater Treatment Equipment Calculation Sheet".

[0050] Table 1

[0051]

[0052] In summary, the integrated wastewater treatment equipment provided in this embodiment treats wastewater through a coagulation device, sedimentation device, filtration device, and disinfection device arranged sequentially. This integrated wastewater treatment equipment is small in size, easy to allocate space, and convenient to implement, allowing for immediate deployment in most areas. Furthermore, the clear division of each part facilitates use and subsequent maintenance, ensuring thorough treatment and purification of the wastewater. After treatment by this integrated equipment, the wastewater meets the standards for non-recyclable wastewater discharge. The overall cost of this integrated wastewater treatment equipment is lower than that of commonly used large-scale wastewater treatment equipment, allowing for large-scale production and use.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] In the description of this utility model, it should be understood that the terms "center," "height," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0055] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. An integrated sewage treatment equipment, characterized in that, include: A coagulation device includes: a first chamber, a wastewater inlet on the first chamber, and a first outlet on the side of the first chamber near the bottom; and an impeller assembly disposed within the first chamber. A sedimentation device connected to the first outlet, the sedimentation device comprising: a second chamber, wherein a second outlet is provided on the side of the second chamber near the top; and an inclined tube sedimentation tank located within the second chamber, wherein a plurality of inclined tubes are provided in the inclined tube sedimentation tank. A filtration device, connected to the second outlet, comprises, in sequence: a first filter tank containing a denitrifying biological filter media layer; a third outlet located on one side of the first filter tank and above the denitrifying biological filter media layer; a second filter tank connected to the third outlet, containing an aerated biological filter media layer; and a fourth outlet located on one side of the second filter tank and above the aerated biological filter media layer. The disinfection device is connected at its bottom to the fourth water outlet. The disinfection device includes: a third chamber; an ultraviolet disinfection mechanism disposed in the third chamber; and a fifth water outlet located at the top of the disinfection device.

2. The integrated sewage treatment equipment as described in claim 1, characterized in that, The impeller assembly includes: Several impellers; A number of fixed supports are spaced apart, and a number of impellers are respectively installed on the fixed supports; Several upper guide vanes, one end of which is set at the top of the first chamber; Several lower guide vanes, one end of which is located at the bottom of the first chamber; A plurality of upper guide plates and a plurality of lower guide plates are staggered to isolate the first chamber into a plurality of coagulation zones that are connected in sequence, and each coagulation zone is provided with at least one impeller.

3. The integrated sewage treatment equipment as described in claim 1, characterized in that, The coagulation device further includes: an inlet pipe connected to the sewage inlet; and a flow stabilizer plate disposed in the first chamber at the end of the inlet pipe.

4. The integrated sewage treatment equipment as described in claim 1, characterized in that, The coagulation device further includes a first support, which is disposed below the first chamber and is used to support the first chamber.

5. The integrated sewage treatment equipment as described in claim 1, characterized in that, The coagulation device further includes: a first water distribution pipe, the two ends of which are connected to the first water outlet and the sedimentation device, respectively.

6. The integrated sewage treatment equipment as described in claim 5, characterized in that, The second chamber is divided into the following sections from top to bottom: a clear water area, an inclined tube area, a water distribution area, and a sludge discharge area. The second outlet is located above the clear water area. The inclined tube sedimentation tank is located within the inclined tube area. The end of the first water distribution pipe is connected to the bottom of the water distribution area. The sludge discharge area is equipped with a sludge discharge pipe.

7. The integrated wastewater treatment equipment as described in claim 6, characterized in that, A second support is provided in the water distribution area to support the inclined tube sedimentation tank.

8. The integrated sewage treatment equipment as described in claim 1, characterized in that, The first filter tank further includes: a first backwash air inlet pipe, one end of which is located below the denitrifying biological filter media layer; a first backwash water inlet pipe, one end of which is located below the denitrifying biological filter media layer; and a first backwash drain pipe, which is located above the denitrifying biological filter media layer. The other ends of the first backwash air inlet pipe, the first backwash water inlet pipe, and the first backwash drain pipe are respectively connected to external equipment. The first backwash air inlet pipe, the first backwash water inlet pipe, and the first backwash drain pipe are used to clean the denitrifying biological filter media layer.

9. The integrated sewage treatment equipment as described in claim 1, characterized in that, The second filter tank further includes: a second backwash air inlet pipe, one end of which is located below the aerated biological filter media layer; a second backwash water inlet pipe, one end of which is located below the aerated biological filter media layer; and a second backwash drain pipe, one end of which is located above the aerated biological filter media layer. The other ends of the second backwash air inlet pipe, the second backwash water inlet pipe, and the second backwash drain pipe are respectively connected to external equipment. The second backwash air inlet pipe, the second backwash water inlet pipe, and the second backwash drain pipe are used to clean the aerated biological filter media layer.

10. The integrated wastewater treatment equipment as described in claim 1, characterized in that, Both the third and fourth water outlets are equipped with anti-backflow mechanisms, which include: a ramp plate that slopes upward from the side away from the third water outlet to the side closer to the third water outlet, or from the side away from the fourth water outlet to the side closer to the fourth water outlet; and a grid-shaped flow stabilizer that is disposed at the third or fourth water outlet.

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