Ammonia nitrogen removal flocculation device

Abstract

The invention relates to the field of water treatment, in particular to an ammonia nitrogen removal flocculation device which comprises a reaction tank, an aerator is connected to one side of the reaction tank, a reaction cavity is formed in the reaction tank, a water inlet and a water outlet are formed in the front end and the rear end of the reaction tank respectively, and a plurality of first folded plates and second folded plates are longitudinally and fixedly connected into the reaction cavity. The bottoms of the multiple first folded plates are fixedly connected with the bottom of the reaction cavity, the tops of the multiple second folded plates are in height connection with the top of the reaction cavity, two sets of first partition plates arranged in parallel are transversely and fixedly connected between the first folded plate and the second folded plate located at the front end, and a first filler cavity used for being filled with filler is formed between the two sets of first partition plates. Two sets of second partition plates arranged in parallel are transversely and fixedly connected between the first folded plate and the second folded plate located at the middle end, a second filler cavity used for being filled with filler is formed between the two sets of second partition plates, and the double water treatment effects of flocculation and ammonia nitrogen removal are achieved by filling small-diameter light filler and arranging aeration at the bottom.

Description

Technical Field

[0001] The present invention relates to the field of water treatment, and particularly to a flocculation device for removing ammonia nitrogen. Background Art

[0002] Ammonia nitrogen is one of the common pollutants in water bodies. It can cause eutrophication of water bodies and is the main oxygen-consuming pollutant in water bodies. It is toxic to fish and certain aquatic organisms. At this time, water purification plants using lake and reservoir water as water sources often face the problem of seasonal ammonia nitrogen exceeding the standard. To remove ammonia nitrogen in raw water, the traditional process is to add a biological oxidation tank at the front end of the flocculation tank to oxidize ammonia nitrogen and convert it into harmless nitrate nitrogen, thereby reducing the content of toxic substances in the water body and improving the safety and stability of water quality. However, adding a biological oxidation tank at the front end of the flocculation tank will bring problems such as increased floor area and higher project cost. Therefore, a flocculation device for removing ammonia nitrogen is needed to solve the problem that the dual effects of flocculation and ammonia nitrogen removal cannot be achieved in a single reaction tank. Summary of the Invention

[0003] The purpose of the present invention is to provide a flocculation device for removing ammonia nitrogen. By filling small-diameter lightweight fillers and arranging aeration at the bottom, a biological film is formed on the surface of the fillers, realizing the function of flocculating raw water and simultaneously performing aeration biological oxidation, and achieving the dual water treatment effects of flocculation and ammonia nitrogen removal.

[0004] The purpose of the present invention is to provide a flocculation device for removing ammonia nitrogen, including a reaction tank. A reaction chamber is provided in the reaction tank. An inlet and an outlet are respectively provided at the front end and the rear end of the reaction tank. The inlet and the outlet are respectively communicated with the front end and the rear end of the reaction chamber. A plurality of first baffles and second baffles are longitudinally fixedly connected in the reaction chamber. The bottoms of the plurality of first baffles are respectively fixedly connected to the bottom of the reaction chamber. The tops of the plurality of second baffles are respectively connected to the top of the reaction chamber at a certain height. The plurality of first baffles and second baffles are arranged alternately to form a channel for the flow of raw water. Two groups of parallel first partitions are horizontally fixedly connected between the first baffle and the second baffle at the front end. A first packing chamber for filling fillers is formed between the two groups of first partitions. Two groups of parallel second partitions are horizontally fixedly connected between the first baffle and the second baffle in the middle. A second packing chamber for filling fillers is formed between the two groups of second partitions.

[0005] Further, the crests and troughs of the first baffles and the second baffles are arranged corresponding to each other.

[0006] Further, sludge discharge grooves are respectively provided at the corresponding positions of the bottom of the reaction chamber and the plurality of first baffles. A sludge discharge pipe is fixedly connected to the corresponding position of one side of the reaction tank. The sludge discharge pipe is used to connect the sludge discharge groove with the outside of the reaction tank.

[0007] Further, a plurality of aeration pipes are fixedly connected to one side of the reaction tank. The aeration pipes are used to provide aeration in the reaction tank.

[0008] Furthermore, the filling area of the first packing chamber is larger than that of the second packing chamber.

[0009] The working principle and usage principle of the present invention are as follows: In the reaction tank of the device, a first baffle and a second baffle are arranged up and down to form a plurality of interconnected channels in the reaction chamber. The water inlet is located at the front end of the channel, and the water outlet is located at the rear end of the channel. The first baffle and the second baffle cause water flow disturbance, playing a role in hydraulic flocculation. Packing is filled in the first packing chamber and the second packing chamber. When the water flow passes through the packing, micro-vortices are generated in the raw water, playing a role in flocculation. At the same time, an aeration pipe is arranged at the bottom of the pool to stir the water flow, strengthening the flocculation effect. And by aerating and oxygenating the reaction chamber, a biofilm is formed on the surface of the packing, and through biological oxidation, ammonia nitrogen is oxidized to nitrate nitrogen, achieving the effect of removing ammonia nitrogen.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: The channels formed by a plurality of first baffles and second baffles in the present invention extend the flow path of the raw water, increase the flocculation reaction time of the raw water, and improve the efficiency of flocculation treatment. At the same time, the device uses an aeration pipe and packing to form a biofilm on the surface of the packing to achieve biological oxidation of the raw water, oxidizing ammonia nitrogen in the raw water to nitrate nitrogen, achieving the effect of removing ammonia nitrogen, realizing the dual effects of flocculation and ammonia nitrogen removal of the raw water in one reaction tank, and realizing the function of combining flocculation and aerobic biological oxidation. Description of the Drawings

[0011] Figure 1 It is a schematic diagram of the overall structure of an ammonia nitrogen removal and flocculation device of the present invention.

[0012] Figure 2 It is a cross-sectional view of the internal structure of an ammonia nitrogen removal and flocculation device of the present invention.

[0013] Figure 3 It is a cross-sectional view of the side structure of an ammonia nitrogen removal and flocculation device of the present invention.

[0014] Description of the reference numerals: 1, reaction tank; 2, water inlet; 3, water outlet; 4, aeration pipe; 5, sludge discharge pipe; 6, reaction chamber; 7, first baffle; 8, second baffle; 9, sludge discharge trough; 10, first partition; 11, second partition; 12, first packing chamber; 13, second packing chamber. Detailed Embodiments

[0015] In order to make the technical means, creative features, achieved purposes and functions realized by the embodiments of the present application easy to understand, the embodiments of the present application will be further described below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of the present application and are not used to limit the embodiments of the present application.

[0016] As shown in Figures 1 to 3 the figure, an ammonia-removing flocculation device includes a reaction tank 1. One side of the reaction tank 1 is connected with an aerator. A reaction chamber 6 is opened in the reaction tank 1. An inlet 2 and an outlet 3 are respectively opened at the front end and the rear end of the reaction tank 1. The inlet 2 and the outlet 3 are respectively communicated with the front end and the rear end of the reaction chamber 6. A plurality of first baffles 7 and second baffles 8 are longitudinally and fixedly connected in the reaction chamber 6. The bottoms of the plurality of first baffles 7 are respectively fixedly connected with the bottom of the reaction chamber 6. The tops of the plurality of second baffles 8 are respectively fixedly connected with the top of the reaction chamber 6 at a height. The plurality of first baffles 7 and second baffles 8 are arranged alternately to form a channel for the raw water to flow. Two groups of parallel first partitions 10 are horizontally and fixedly connected between the first baffle 7 and the second baffle 8 at the front end. A first packing chamber 12 for filling packing is formed between the two groups of first partitions 10. Two groups of parallel second partitions 11 are horizontally and fixedly connected between the first baffle 7 and the second baffle 8 at the middle end. A second packing chamber 13 for filling packing is formed between the two groups of second partitions 11.

[0017] In specific implementation, four first baffles 7 can be set, and three second baffles 8 can be set. The three second baffles 8 are respectively located at the gaps between the four first baffles 7. At the same time, the bottoms of the four first baffles 7 are fixedly connected with the bottom of the reaction chamber 6, and the tops of the three second baffles 8 are fixedly connected with the top of the reaction chamber 6. The distance between the first baffle 7 and the second baffle 8 can be set to 500 - 600 mm. At the same time, the angles of the baffles of the first baffle 7 and the second baffle 8 are respectively set to 60°. The first baffle 7 and the second baffle 8 arranged in an up-and-down staggered manner form a plurality of interconnected channels in the reaction chamber 6, increasing the flow path of the raw water in the reaction tank 1, extending the treatment time of the raw water, and improving the flocculation effect and efficiency of the raw water. One side of the reaction tank 1 is connected with an aerator, and the aerator can provide aeration in the reaction tank 1 to realize aeration and oxygenation in the reaction chamber 6. A plurality of small-diameter lightweight packings are filled in the first packing chamber 12 and the second packing chamber 13. The micro-vortex effect generated when the water flow passes through the packing can play a flocculation effect on the raw water. At the same time, the reaction chamber 6 is divided into an aeration biological oxidation and flocculation function area, a flocculation and biological oxidation function area, and a flocculation function area by using the first baffle 7, the second baffle 8, the first packing chamber 12 and the second packing chamber 13. The air pipe 4 is fixedly connected at a position corresponding to the aeration biological oxidation and flocculation function area and is connected with the aerator through the air pipe 4 to aerate and oxygenate the aeration biological oxidation and flocculation function area and the flocculation and biological oxidation function area. Aeration can not only stir the water flow to improve the flocculation effect, but also form a biofilm on the surface of the packing, and the biofilm plays a biological oxidation role on the raw water, thereby oxidizing the ammonia nitrogen in the raw water to nitrate nitrogen and achieving the effect of removing ammonia nitrogen.

[0018] Further, the crests and troughs of the first folding plate 7 and the second folding plate 8 are arranged corresponding to each other.

[0019] In specific implementation, arranging the crests and troughs of the first folding plate 7 and the second folding plate correspondingly facilitates the disturbance of water flow when the water flows between the first folding plate 7 and the second folding plate 8, playing a role in hydraulic flocculation.

[0020] Further, sludge discharge grooves 9 are respectively formed at the corresponding positions of the bottom of the reaction chamber 6 and the multiple first folding plates 7. A sludge discharge pipe 5 is fixedly connected to the corresponding position on one side of the reaction tank 1. The sludge discharge pipe 5 is used to connect the sludge discharge groove 9 with the outside of the reaction tank 1.

[0021] In specific implementation, sludge discharge grooves 9 are respectively formed between every two adjacent first folding plates 7. The sludge discharge grooves 9 can be used to collect precipitated impurities and sludge, and discharge the impurities from the reaction chamber 6 through the sludge discharge pipe 5, facilitating the cleaning of the impurities and sludge precipitated in the reaction chamber 6.

[0022] Further, a plurality of aeration pipes 4 are fixedly connected to one side of the reaction tank 1. The aeration pipes 4 are used to provide aeration in the reaction tank 1.

[0023] In specific implementation, the aeration pipes 4 are connected to an aerator. Through the aeration pipes 4, the aeration generated by the aerator can be transported to the corresponding functional area to realize the aeration and oxygenation of the functional area. It not only plays the effect of aeration and flocculation, but also can facilitate the formation of a biological film on the surface of the filler to play a biological oxidation role on the raw water, achieving the effect of removing ammonia nitrogen from the raw water.

[0024] Further, the filling area of the first filler chamber 12 is larger than that of the second filler chamber 13.

[0025] In specific implementation, the distance between two groups of first partition plates 10 in the aeration biological oxidation and flocculation combined functional area is greater than the distance between two groups of second partition plates 11 in the flocculation and biological oxidation combined functional area, achieving the purpose that the filling area of the first filler chamber 12 is larger than that of the second filler chamber 13, so that the number of fillers in the first filler chamber 12 is greater than the number of fillers in the second filler chamber 13, realizing the emphasis differentiation of the ammonia nitrogen removal and flocculation functions in the two functional areas.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An ammonia-nitrogen removal flocculation device, comprising a reaction tank (1), a side of the reaction tank (1) is connected with an aerator, and a reaction cavity (6) is formed in the reaction tank (1), and it is characterized in that: The front end and the back end of the reaction tank (1) are respectively provided with a water inlet (2) and a water outlet (3). The water inlet (2) and the water outlet (3) are respectively communicated with the front end and the back end of the reaction chamber (6). A plurality of first baffles (7) and second baffles (8) are longitudinally fixedly connected in the reaction chamber (6). The bottoms of the plurality of first baffles (7) are respectively fixedly connected with the bottom of the reaction chamber (6). The tops of the plurality of second baffles (8) are respectively height-connected with the top of the reaction chamber (6). The plurality of first baffles (7) and second baffles (8) are arranged alternately to form a channel for the raw water to flow. Two groups of parallel first partitions (10) are transversely fixedly connected between the first baffle (7) and the second baffle (8) at the front end. A first packing chamber (12) for filling packing is formed between the two groups of first partitions (10). Two groups of parallel second partitions (11) are transversely fixedly connected between the first baffle (7) and the second baffle (8) in the middle. A second packing chamber (13) for filling packing is formed between the two groups of second partitions (11).

2. The ammonia nitrogen removal flocculation device according to claim 1, characterized in that: The crests and troughs of the first baffle (7) and the second baffle (8) are arranged corresponding to each other.

3. The ammonia nitrogen removal flocculation device according to claim 1 or 2, characterized in that: Sludge discharge grooves (9) are respectively arranged at the corresponding positions of the bottom of the reaction chamber (6) and the plurality of first baffles (7). A sludge discharge pipe (5) is fixedly connected to the side of the reaction tank (1) at the position corresponding to the sludge discharge groove (9). The sludge discharge pipe (5) is used to communicate the sludge discharge groove (9) with the outside of the reaction tank (1).

4. The ammonia nitrogen removal flocculation device according to claim 1 or 2, characterized in that: A plurality of aeration pipes (4) are fixedly connected to one side of the reaction tank (1). The aeration pipes (4) are used to provide aeration in the reaction tank (1).

5. The ammonia nitrogen removal flocculation device according to claim 3, characterized in that: A plurality of aeration pipes (4) are fixedly connected to one side of the reaction tank (1). The aeration pipes (4) are used to provide aeration in the reaction tank (1).

6. The ammonia nitrogen removal flocculation device according to claim 1, 2 or 5, characterized in that: The filling area of the first packing chamber (12) is larger than the filling area of the second packing chamber (13).

7. The ammonia nitrogen removal flocculation device according to claim 3, characterized in that: The filling area of the first packing chamber (12) is larger than the filling area of the second packing chamber (13).

8. An ammonia nitrogen removal flocculation device according to claim 4, characterized in that: The filling area of the first packing chamber (12) is larger than the filling area of the second packing chamber (13).

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