Low-carbon sewage low-energy-consumption treatment system

Abstract

The utility model discloses a low-carbon sewage low-energy-consumption treatment system which comprises an adjusting tank, a filtering tank, a sulfur autotrophic denitrification filtering tank and a settling tank, the regulating tank, the filter tank, the sulfur autotrophic denitrification filter tank and the sedimentation tank are sequentially connected through pipes; a water inlet pipe is arranged on one side of the regulating tank; the sulfur autotrophic denitrification filter tank comprises a tank body, a sulfur autotrophic denitrification biological filler layer, a filler supporting layer, a supporting layer assembly, a backwashing water distribution assembly and a backwashing gas distribution assembly; the sulfur autotrophic denitrification biological filler layer, the filler supporting layer and the supporting layer assembly are sequentially arranged in the tank body from top to bottom, and the backwashing water distribution assembly and the backwashing gas distribution assembly are arranged on the two sides of the supporting layer assembly. Large-particle impurities are removed through physical filtration, then the sulfur autotrophic denitrification filter tank is used for denitrifying the sewage, and the sewage is directly discharged after being precipitated, so that the energy consumption is low, and the treatment effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment, and in particular relates to a low-carbon, low-energy wastewater treatment system. Background Technology

[0002] Existing wastewater treatment processes have poor adaptability and stability, resulting in large fluctuations in water quality. The wastewater mainly consists of domestic sewage.

[0003] The biological treatment of wastewater has high carbon emissions, requires a large area, involves complex processes, and is costly. Utility Model Content

[0004] In view of this, the present invention aims to propose a low-carbon, low-energy wastewater treatment system to solve at least one technical problem in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A low-carbon, low-energy wastewater treatment system includes an equalization tank, a filter tank, a sulfur autotrophic denitrification filter, and a sedimentation tank; the equalization tank, filter tank, sulfur autotrophic denitrification filter, and sedimentation tank are connected in sequence by pipes; an inlet pipe is provided on one side of the equalization tank, and an outlet pipe is provided at the top of the sedimentation tank.

[0007] The sulfur autotrophic denitrification filter includes a tank body, a sulfur autotrophic denitrification biological packing layer, a packing support layer, a support layer assembly, a backwash water distribution assembly, and a backwash air distribution assembly.

[0008] The sulfur autotrophic denitrification biological packing layer, packing support layer, and support layer components are arranged sequentially from top to bottom in the tank, and the backwash water distribution component and backwash air distribution component are arranged on both sides of the support layer component.

[0009] Furthermore, the equalization tank is equipped with a stirring assembly, a sludge discharge pipe is located at the bottom of the equalization tank, a sludge pump is installed on the sludge discharge pipe, an inlet valve is installed on the inlet pipe, and a drain pump is installed on the outlet pipe.

[0010] Furthermore, the stirring assembly includes a stirring motor, a transmission rod, and a stirring rod;

[0011] The motor is mounted on the regulating tank, and its output is fixedly connected to the rotating rod. Several stirring rods are evenly arranged on the transmission rod.

[0012] Furthermore, the upper part of the equalization tank is connected to the upper part of the filter tank via a first connecting pipe;

[0013] A first water pump is installed on the first connecting pipe;

[0014] The equalization tank is equipped with several first-stage filter screens;

[0015] The aperture of several first filter screens decreases sequentially from top to bottom.

[0016] Furthermore, the lower part of the equalization tank is connected to the upper part of the sulfur autotrophic denitrification filter through a second connecting pipe. A second water pump is installed on the second connecting pipe. The first connecting pipe is located above the first filter screen, and the second connecting pipe is located below the first filter screen.

[0017] Furthermore, a water collection ditch is provided at the bottom of the pool, and a support net is provided on the water collection ditch. The water collection ditch is connected to the sedimentation tank through an outlet pipe, and an outlet valve and a third water pump are provided on the outlet pipe. Support columns are provided on both sides of the bottom of the pool.

[0018] Furthermore, the support layer assembly includes a number of sequentially placed support filter bricks, the bottom of which is provided with a number of evenly distributed filter brick plates, and the support filter bricks are provided with a number of first through holes; the filter brick plates are provided with a number of second through holes, and the number of filter brick plates is at least two.

[0019] The height of the sulfur autotrophic denitrification biological packing layer is 1.8~3m.

[0020] The thickness of the filler support layer is 400~550mm.

[0021] Furthermore, the backwashing water assembly includes a backwash water pipe, which is connected to a water source via a first connecting pipe, and a first valve is provided on the first connecting pipe;

[0022] The backwash pipe has several evenly distributed water distribution holes on the side away from the pool body.

[0023] Furthermore, the backwash air distribution assembly includes a backwash air pipe, which is connected to an air source via a second connecting pipe, and a second valve is provided on the second connecting pipe; the side of the backwash air pipe away from the tank body is provided with several evenly distributed air distribution holes.

[0024] Compared with existing technologies, the low-carbon, low-energy wastewater treatment system of this invention has the following advantages:

[0025] This application includes an equalization tank, a filter tank, a sulfur autotrophic denitrification filter, and a sedimentation tank. The equalization tank mixes low-concentration and high-concentration wastewater evenly, making wastewater treatment more uniform. After physical filtration to remove large particles of impurities, the wastewater is denitrified using the sulfur autotrophic denitrification filter. After sedimentation, the wastewater is directly discharged, resulting in low energy consumption and good treatment effect.

[0026] The equalization tank of this application is equipped with a stirring component to mix low-concentration sewage and high-concentration sewage evenly, thereby enabling uniform treatment of sewage.

[0027] This application defines a filtration tank, which is equipped with several filter screens to perform multiple physical filtrations of sewage, resulting in a good filtration effect. Attached Figure Description

[0028] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0029] Figure 1 This is a schematic diagram of a low-carbon, low-energy wastewater treatment system according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the sulfur autotrophic denitrification filter according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the support layer assembly described in an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Equalization tank; 2. Filtration tank; 3. Sulfur autotrophic denitrification filter; 301. Tank body; 302. Sulfur autotrophic denitrification biological packing layer; 303. Packing support layer; 304. Support layer assembly; 3041. Supporting filter bricks; 3042. Filter brick plate; 3043. First through hole; 3044. Second through hole; 305. Backwash water distribution assembly; 3051. Backwash water pipe; 3052. First valve; 3053. Water distribution hole; 3 06. Backwash air distribution assembly; 3061. Backwash air pipe; 3062. Second valve; 3063. Air distribution hole; 4. Sedimentation tank; 5. Sludge pump; 6. Inlet valve; 7. Agitator motor; 8. Transmission rod; 9. Agitator rod; 10. First water pump; 11. First filter screen; 12. Second water pump; 13. Water collection ditch; 14. Support net; 15. Outlet valve; 16. Third water pump; 17. Support column; 18. Drain pump. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0037] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] like Figure 1-3 As shown, a low-carbon, low-energy wastewater treatment system includes an equalization tank 1, a filter tank 2, a sulfur autotrophic denitrification filter 3, and a sedimentation tank 4. The equalization tank 1, filter tank 2, sulfur autotrophic denitrification filter 3, and sedimentation tank 4 are connected sequentially by pipes. An inlet pipe is provided on one side of the equalization tank 1, and an outlet pipe is provided at the top of the sedimentation tank 4. The sulfur autotrophic denitrification filter 3 includes a tank body 301, a sulfur autotrophic denitrification biological packing layer 302, a packing support layer 303, a support layer assembly 304, a backwash water distribution assembly 305, and a backwash air distribution assembly 306. The sulfur autotrophic denitrification biological packing layer 302, the packing support layer 303, and the support layer assembly 304 are arranged sequentially from top to bottom within the tank body 301, and the backwash water distribution assembly 305 and the backwash air distribution assembly 306 are arranged on both sides of the support layer assembly 304.

[0039] The equalization tank 1 is equipped with a stirring assembly. The bottom of the equalization tank 1 is equipped with a sludge discharge pipe, a sludge pump 5 is installed on the sludge discharge pipe, an inlet valve 6 is installed on the inlet pipe, and a drain pump 18 is installed on the outlet pipe.

[0040] The stirring assembly includes a stirring motor 7, a transmission rod 8, and stirring rods 9. The mounting end of the stirring motor 7 is located on the regulating tank 1, and the output end of the stirring motor 7 is fixedly connected to the rotating rod. Several stirring rods 9 are evenly arranged on the transmission rod 8. The upper part of the regulating tank 1 is connected to the upper part of the filter tank 2 through a first connecting pipe. A first water pump 10 is installed on the first connecting pipe. Several first filter screens 11 are installed inside the regulating tank 1. The aperture of the several first filter screens 11 decreases from top to bottom.

[0041] The lower part of the equalization tank 1 is connected to the upper part of the sulfur autotrophic denitrification filter 3 via a second connecting pipe. A second water pump 12 is installed on the second connecting pipe. The first connecting pipe is located above the first filter screen 11, and the second connecting pipe is located below the first filter screen 11. A water collection ditch 13 is provided at the bottom of the tank body 301. A support net 14 is provided on the water collection ditch 13. The water collection ditch 13 is connected to the sedimentation tank 4 via an outlet pipe. An outlet valve 15 and a third water pump 16 are provided on the outlet pipe. Support columns 17 are provided on both sides of the bottom of the tank body 301.

[0042] The support layer assembly 304 includes several sequentially placed support filter bricks 3041. The bottom of each support filter brick 3041 has several evenly distributed filter brick plates 3042. Each support filter brick 3041 has several first through holes 3043; each filter brick plate 3042 has several second through holes 3044. The number of filter brick plates 3042 is at least two. The height of the sulfur autotrophic denitrification biological packing layer 302 is 1.8~3m. The thickness of the packing support layer 303 is 400~550mm.

[0043] The backwash water distribution assembly 305 includes a backwash water pipe 3051, which is connected to a water source via a first connecting pipe and is equipped with a first valve 3052. The backwash water pipe 3051 has several evenly distributed water distribution holes 3053 on the side away from the tank body 301. The backwash air distribution assembly 306 includes a backwash air pipe 3061, which is connected to an air source via a second connecting pipe and is equipped with a second valve 3062. The backwash air pipe 3061 has several evenly distributed air distribution holes 3063 on the side away from the tank body 301.

[0044] In practice, the inlet valve 6 is opened, and then the stirring motor 7 is turned on. The sewage is mixed in the equalization tank 1 to make the concentration of the sewage uniform. By mixing sewage flowing in at different times, the equalization tank 1 reduces water quality fluctuations and ensures the stable operation of subsequent treatment processes. The equalization tank 1 can mitigate the impact of high-concentration or high-flow sewage on subsequent treatment equipment and extend the service life of the equipment.

[0045] After adjusting the time in equalization tank 1, the first water pump 10 is turned on, and the wastewater in equalization tank 1 is fed into filter tank 2. Filter tank 2 filters the wastewater in layers to remove impurities. Then, the second water pump 12 is turned on, and the filtered wastewater is fed into sulfur autotrophic denitrification filter tank 3.

[0046] Wastewater undergoes denitrification with the sulfur-autotrophic denitrification biological filter bed 302, thereby reducing the sulfur and nitrogen content in the wastewater. After passing through the support layer and filter bricks 3041, it enters the collection ditch 13. The treated wastewater is discharged through the effluent pipe, at which point the effluent valve 15 is opened. Backwashing is divided into water washing, air washing, and combined water-air backwashing. During water washing, the first valve 3052 is open and the second valve 3062 is closed; during air washing, the second valve 3062 is open and the first valve 3052 is closed during backwashing; during combined water-air backwashing, the first valve 3052 and the second valve 3062 are opened simultaneously. Air washing is performed for 2-3 minutes first, followed by combined water-air backwashing for 10-15 minutes, and finally water washing for 3-5 minutes. The backwashing time can be adjusted according to the degree of filter clogging. NaHCO3 is added to the sulfur-autotrophic denitrification filter 3 to maintain the pH of the influent between 8 and 9. Adjusting the pH of water with NaHCO3 can maintain a suitable pH level, providing good buffering capacity and offering an inorganic carbon source for bacteria, thus promoting biofilm formation.

[0047] Open the outlet valve 15 and the third water pump 16. The sewage treated by the sulfur autotrophic denitrification filter 3 enters the sedimentation tank 4. The sedimentation tank 4 performs sedimentation treatment on the sewage. The supernatant in the sedimentation tank 4 is discharged through the drainage pump 18.

[0048] 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 low-carbon, low-energy wastewater treatment system, characterized in that: The adjusting tank, the filter tank, the sulfur autotrophic denitrification filter tank and the sedimentation tank are sequentially connected through pipes; one side of the adjusting tank is provided with a water inlet pipe, and the upper part of the sedimentation tank is provided with a water outlet pipe; the sulfur autotrophic denitrification filter tank comprises a tank body, a sulfur autotrophic denitrification biological filler layer, a filler supporting layer, a supporting layer assembly, a backwashing water distribution assembly and a backwashing air distribution assembly; the sulfur autotrophic denitrification biological filler layer, the filler supporting layer and the supporting layer assembly are sequentially arranged in the tank body from top to bottom, and the backwashing water distribution assembly and the backwashing air distribution assembly are arranged on both sides of the supporting layer assembly.

2. The low-carbon sewage low-energy treatment system according to claim 1, characterized in that: The adjusting tank is provided with a stirring assembly, the bottom of the adjusting tank is provided with a sludge outlet pipe, the sludge outlet pipe is provided with a sludge pump, the water inlet pipe is provided with a water inlet valve, and the water outlet pipe is provided with a water outlet pump.

3. The low-carbon sewage low-energy consumption treatment system according to claim 2, characterized in that: The stirring assembly comprises a stirring motor, a transmission rod and stirring rods; The mounting end of the stirring motor is arranged on the adjusting tank, the output end of the stirring motor is fixedly connected with the rotating rod, and the stirring rods are uniformly arranged on the transmission rod.

4. The low-carbon sewage low-energy treatment system according to claim 1, characterized in that: The upper part of the adjusting tank is connected with the upper part of the filter tank through a first connecting pipe; The first connecting pipe is provided with a first water pump; The adjusting tank is provided with a plurality of first filter screens.

5. The low-carbon sewage low-energy treatment system according to claim 1, characterized in that: The lower part of the adjusting tank is communicated with the upper part of the sulfur autotrophic denitrification filter tank through a second connecting pipe, the second connecting pipe is provided with a second water pump, the first connecting pipe is arranged above the first filter screen, and the second connecting pipe is arranged below the first filter screen.

6. The low-carbon sewage low-energy treatment system according to claim 1, characterized in that: The bottom of the tank body is provided with a water collecting ditch, the water collecting ditch is provided with a supporting net, the water collecting ditch is connected with the sedimentation tank through a water outlet pipeline, the water outlet pipeline is provided with a water outlet valve and a third water pump, and both sides of the bottom of the tank body are provided with supporting columns.

7. The low-carbon sewage low-energy treatment system according to claim 1, characterized in that: The supporting layer assembly comprises a plurality of supporting filter bricks arranged in sequence, the bottom of each supporting filter brick is provided with a plurality of filter brick plates which are uniformly distributed, and the supporting filter brick is provided with a plurality of first through holes; the filter brick plate is provided with a plurality of second through holes, and the number of the filter brick plates is at least two.

8. The low-carbon sewage low-energy treatment system according to claim 1, characterized in that: The backwashing water distribution assembly comprises a backwashing water pipe, the backwashing water pipe is connected with a water source through a first connecting pipe, and the first connecting pipe is provided with a first valve; The side, away from the tank body, of the backwashing water pipe is provided with a plurality of water distribution holes which are uniformly distributed.

9. The low-carbon sewage low-energy treatment system according to claim 1, characterized in that: The backwashing air distribution assembly comprises a backwashing air pipe, the backwashing air pipe is connected with an air source through a second connecting pipe, and the second connecting pipe is provided with a second valve; the side, away from the tank body, of the backwashing air pipe is provided with a plurality of air distribution holes which are uniformly distributed.

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