[0030] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0031] See Figure 1~3 , The embodiment of the present invention provides a high-salinity sewage treatment device, comprising a regulating tank 1, a vertical three-phase fluidized bed 2, a biological aerated filter 3, and an intermediate tank 4 connected in sequence; wherein, the vertical three Phase fluidized bed 2 includes:
[0032] A vertically arranged reaction cylinder 21 with a reaction cavity formed in the reaction cylinder 21;
[0033] A guide tube 22 coaxially built into the reaction chamber;
[0034] The first aeration mechanism 23 includes a first aeration fan 231, a plurality of first aeration discs 232 directly below the guide tube 22, and a connection between the first aeration fan 231 and the first aeration plate 232. The first aeration pipe 233 of the aeration tray 232; and
[0035] A water outlet mechanism 24 coaxially arranged directly above the flow guide tube 22, and the water outlet end of the water outlet mechanism 24 is connected with the water inlet end of the biological aerated filter 3.
[0036] During sewage treatment, first input the high-salinity sewage into the adjustment tank 1 to adjust the pH value, water quality, and water volume. After the adjustment is completed, it enters from the bottom of the reaction chamber of the vertical three-phase fluidized bed 2. At the same time, add suspended fillers and turn on the An aeration mechanism 23. After the water level in the reaction chamber reaches the guide tube 22, since the plurality of first aeration discs 232 are located directly below the guide tube 22, aeration occurs in the guide tube 22 during aeration. No aeration occurs outside the deflector 22, so that an aerobic zone is formed inside the deflector 22, and an anaerobic zone and a facultative zone are formed outside the deflector 22, so that different salt tolerances are formed on the suspended filler added when the water enters. Strains. When the water level reaches a certain amount, the guide tube 22 is submerged. Under the action of the multiple first aeration discs 232, the suspended filler in the guide tube 22 moves from bottom to top, and the guide tube 22 and the reaction tube 21 The suspended filler in the middle moves from top to bottom, thereby forming a cyclic movement of the suspended filler inside and outside the guide tube 22, so that the sewage alternately undergoes nitrification and denitrification reactions, which realizes the nitrification and denitrification reactions in the same reaction cylinder 21 Occurs alternately, which reduces energy consumption, construction costs, and improves sewage treatment efficiency. Among them, in the above-mentioned nitrification and denitrification reaction process, as the depth of the biofilm of the suspended filler is different, short-range nitrification and anaerobic ammonium nitridation will be formed in the biofilm, thereby further improving the sewage inside and outside the deflector 22 of this embodiment. Treatment efficiency and ammonia removal rate.
[0037] Where as Figure 4 As shown, in order to increase the coordinated aeration effect of the first aeration mechanism 23 and the deflector 22, a plurality of the first aeration discs 232 in this embodiment are arranged in an annular array directly below the deflector 22, and The plurality of first aeration discs 232 are arranged in an annular array to cooperate with the guide tube 22 to promote the upward movement of the suspended filler in the guide tube 22.
[0038] The sewage treated by the vertical three-phase fluidized bed 2 enters the biological aerated filter 3, and is cultivated in the biological aerated filter 3 to form salt-tolerant bacteria that match its internal salinity, and the sewage is further processed.
[0039] Among them, the water outlet mechanism 24 in this embodiment includes an outer rectifying cylinder 241, an inner rectifying cylinder 242, a carrier separator 243, and an overflow weir 244. The inner rectifying cylinder 242 is coaxially built into the outer rectifying cylinder 241 and is coaxially with the outer rectifying cylinder. A rectifying cavity is formed between 241, a water outlet cavity communicating with the lower end of the rectifying cavity is formed between the outer rectifying cylinder 241 and the reaction cylinder 1, and the water outlet end of the carrier separator 243 is connected to the rectifying cavity Connected, one end of the overflow weir 244 is connected to the upper end of the water outlet cavity, and the other end is connected to the water inlet end of the biological aerated filter 3. In this embodiment, the water is fed intermittently. After the reaction is completed, the activated sludge can pass through the carrier separator 243 and enter the rectifier cavity, so the sludge in the sewage entering the rectifier cavity from the carrier separator 243 can settle and enter The clarified water in the outlet cavity is clarified water, and the clarified water in the outlet cavity can overflow through the overflow weir 244. Among them, when standing still, the suspended filler is easy to collapse due to no water and aeration support. Under the action of gravity, the collapsed suspended filler will collide with each other, causing the biofilm formed on the suspended filler to fall off and regenerate. Provide conditions for the next water intake.
[0040] The arrangement of the carrier separator 243 in this embodiment facilitates the separation of suspended fillers during the water outlet process, ensures that the clarified water in the rectification cavity does not contain suspended fillers, reduces the loss rate of suspended fillers, and the coordination of the outer rectifying cylinder 241 and the inner rectifying cylinder 242 can be reduced The clarified water in the rectifying cavity is affected by the reaction zone inside and outside the guide tube 22 to ensure the clarity of the clarified water in the rectifying cavity.
[0041] Such as figure 2 , image 3 As shown, in order to improve the separation balance and water output efficiency of the carrier separator 243, the carrier separators 243 are multiple and evenly arranged along the inner wall of the inner rectifying cylinder 242, each of the carrier separators 243 includes The separation barrel 243a and the water outlet barrel 243b are provided with a plurality of separation holes on the side wall of the separation barrel 243a. The water outlet barrel 243b is built in the separation barrel 243a and forms a separation cavity with the separation barrel 243a. One end of 243b passes through the separation cylinder 243a and communicates with the rectifying cavity, and the other end extends axially along the separation cylinder 243a and forms a gap between the end of the separation cylinder 243a and the separation cavity. . That is, the clarified water enters the rectification cavity through the separation hole, enters the outlet barrel 243b through the gap between the end of the separation barrel 243a and the outlet barrel 243b, then enters the rectification cavity and overflows through the overflow weir 244.
[0042] Among them, each of the separation holes in this embodiment is an arc-shaped hole arranged in the circumferential direction of the separation cylinder 243a, and a plurality of the separation holes are evenly arranged along the axial direction of the separation cylinder 243a. The use of arc-shaped holes can improve The water output efficiency of the separation cylinder 243a.
[0043] The vertical three-phase fluidized bed 2 of this embodiment also includes a tapered cover 25 whose outer diameter gradually increases from top to bottom. The upper end of the tapered cover 25 is connected to the inner rectifying cylinder 242, and the guide The upper end of the flow tube 22 extends into the conical cover 25. Moreover, there is a gap between the outer edge of the cone 25 and the inner wall of the reaction cylinder 21. When the water is decanted, the sewage enters the rectifying cavity through the carrier separator 243 from the inner rectifying cylinder 242, and the sludge in the sewage entering the rectifying cavity moves down the outer wall of the cone 25 to between the deflector cylinder 22 and the reaction cylinder 21 , And the suspended filler that enters and moves above the inner cone 6 during aeration will fall to the upper surface of the cone 25 with the sludge, so that a flocculation clarification layer is formed on the upper surface of the cone 25. The flocculation and clarification The layer can perform a secondary reaction with the effluent sewage, which is beneficial to improve the reaction efficiency.
[0044] The biological aerated filter 3 in this embodiment includes a reaction tank 31 and a second aeration mechanism 32. The second aeration mechanism 32 includes a second aeration fan 321 and a plurality of second aerations arranged at the bottom of the reaction tank 31 The disk 322 and the second aeration tube 323 connecting the second aeration fan 321 and the second aeration disk 322. The second aeration mechanism 32 of this embodiment can be set in an existing conventional manner, so here Do not repeat it.
[0045] In order to increase the sewage treatment effect and avoid equipment clogging, the high-salinity sewage treatment device of this embodiment includes a backwashing mechanism 5, and the backwashing mechanism 5 includes a plurality of backwashing nozzles 51 arranged at the bottom of the reaction tank 31 , A backwash pump 52 provided in the intermediate pool 4, a second backwash pipe 53 connecting the backwash pump 52 and the backwash nozzle 51, and a first backwashing pump connecting the backwash pump 52 and the separation cavity A backwash tube 54. Specifically, the backwashing head is arranged under the plurality of second aeration disks 322 and can be used for backwashing the second aeration disks 322.
[0046] Wherein, the first backwash pipe 54 includes a ring-shaped backwash main pipe 541, a connecting pipe 542 connecting the backwash main pipe 541 and the backwash pump 52, and a plurality of backwash branch pipes 543, each of which has one end. It is in communication with the backwash main pipe 541, and the other end is in communication with the separation cavity. As the carrier separator 243 discharges water, biofilm and a small amount of fine suspended filler can pass through the separation hole and enter the carrier separator 243. On the one hand, it is easy to cause the separation hole to be blocked, and on the other hand, it is easy to accumulate and compact in the water outlet cylinder 243b, and then cause The water outlet end of the carrier separator 243 is blocked, so the backwash mechanism 5 of this embodiment can avoid the blockage of the carrier separator 243.
[0047] In order to increase the salt tolerance of the salt-tolerant bacteria, the high-salinity wastewater treatment system of this embodiment includes a backflow mechanism, the backflow mechanism includes a first backflow pump 6 and a second backflow pump 7, the first backflow pump The water inlet end of 6 is connected to the overflow weir 244, the water outlet end is connected to the regulating tank 1, the water inlet end of the second reflux pump 7 is connected to the reaction tank 31, and the water outlet end is connected to the regulating tank 1Connect. Since the vertical three-phase fluidized bed 2 of this embodiment is a high-salinity section, and the biological aerated filter 3 is a low-salinity section, this embodiment stimulates salt-tolerant bacteria through the reflux of the high-salinity section and the low-salinity section. And promote the growth of dominant salt-tolerant bacteria in the vertical three-phase fluidized bed 2 and the biological aerated filter 3.
[0048] The specific sewage treatment process of the high-salinity sewage treatment device of this embodiment is as follows: First, the high-salinity sewage is input into the adjustment tank to adjust the pH value, water quality, and water volume. After the adjustment is completed, the reaction chamber of the vertical three-phase fluidized bed Enter from the bottom, add suspended fillers, turn on the first aeration mechanism, and cultivate salt-tolerant bacteria in the sewage that matches the salinity of the reaction chamber. When the water level in the reaction chamber reaches the diversion cylinder, due to multiple first The aeration plate is located directly under the deflector, so during aeration, aeration occurs in the deflector and no aeration outside the deflector, so that an aerobic zone is formed in the deflector and anaerobic is formed outside the deflector. Zone and facultative zone, so that different salt-tolerant bacteria, aerobic salt-tolerant bacteria, anaerobic salt-tolerant bacteria, and facultative salt-tolerant bacteria are formed on the suspended fillers added during water intake. When the water level reaches a certain amount, The guide tube is submerged. Under the action of multiple first aeration discs, the suspended filler in the guide tube moves from bottom to top, and the suspended filler between the guide tube and the reaction tube moves from top to bottom, thus The cyclic movement of the suspended filler inside and outside the diversion tube is formed, so that the sewage alternately undergoes nitrification and denitrification reactions, and the biofilm on the suspended carrier can perform short-cut nitrification and anaerobic ammonium nitridation. After the biochemical reaction, it is allowed to stand still, and the sewage in the inner rectifier tube The carrier separator enters the rectifier cavity, the sludge in the sewage moves down the outer wall of the cone cover, and the clarified water entering the water outlet cavity overflows through the overflow weir; the overflowed sewage enters the aerated biological filter After the tank, turn on the second aeration mechanism and cultivate salt-tolerant bacteria in the sewage that matches the salinity in the biological aerated filter to enhance the efficiency of the biofilm treatment in the biological aerated filter, and discharge it into the middle after treatment In the pool, the sewage in the intermediate pool can be used for backwashing.
[0049] Compared with the prior art, the present invention, on the one hand, cultivates salt-tolerant strains that match the internal salinity in the vertical three-phase fluidized bed and the biological aerated filter, so that the salt-tolerant strains formed are matched with the sewage Treatment to improve the efficiency of sewage treatment. On the other hand, an aerobic zone is formed in the diversion tube, and an anaerobic zone and a facultative zone are formed outside the diversion tube, and the suspended filler is circulated inside and outside the diversion tube to promote the alternate reaction of nitrification and denitrification .
