CN205035234U - BioDopp biochemical reactor of embedded rectangle sedimentation tank - Google Patents

Abstract

The utility model provides a BioDopp biochemical reactor embedded with a rectangular sedimentation tank, which is composed of an anaerobic zone, anoxic zone, an aerobic zone and a rectangular sedimentation tank, and the air lifter provides the power for the circulation of muddy water mixture in each functional zone , forming an integrated biochemical reactor. The rectangular sedimentation tank adopts a rectangular sedimentation tank that enters and exits at the same time, and is set above the anoxic zone. Compared with the previous BioDopp biochemical reactor, the utility model adopts a rectangular sedimentation tank instead of the original mud-water separation device using inclined tube or inclined plate filler, which solves the problem that the original mud-water separation device is easy to block and needs backwashing device, civil engineering Complex structure, large investment and other issues.

Description

A BioDopp biochemical reactor with built-in rectangular sedimentation tank

technical field

The utility model relates to a BioDopp biochemical reactor embedded with a rectangular sedimentation tank, which belongs to the field of water treatment.

Background technique

BioDopp biochemical reactor is a novel sewage treatment device invented by Dr. Engelbart of German EBV company, which combines various single functional units (biological nitrification, denitrification, phosphorus release, phosphorus absorption, organic matter oxidation, precipitation, etc.) Rectangular tank, and adopts low dissolved oxygen (usually 0.3~0.8mg/L) to realize vertical synchronous nitrification/denitrification denitrification, high sludge concentration (usually 5~8g/L) to ensure efficient and stable treatment (low dissolved oxygen and high sludge concentration are two major features of its process). Compared with existing traditional biochemical reactors, BioDopp biochemical reactor has the following advantages: simple operation; high-efficiency biological nitrogen removal and good phosphorus removal effect under low dissolved oxygen, simultaneous nitrification/denitrification denitrification in the same tank; efficient and continuous operation, stable effluent ;Low sludge output, the remaining sludge can be reduced by 40-60% compared with traditional processes; the maintenance workload is small; the floor area is small, and the use of rectangular pools saves a lot of land, and the sewage treatment plant only needs half the area of a conventional sewage treatment plant; The pipeline investment is greatly reduced, the investment and operation costs are low, and the investment and operation costs can be reduced by about half. Therefore, it has been paid attention to and promoted in sewage treatment.

A typical BioDopp biochemical reactor adopts a built-in mud-water separation device, which is equipped with a combination of inclined plates and inclined tubes to separate mud and water. The use of combined packing can obtain a larger surface load and is not affected by the sludge load. However, the combined packing of inclined plate and inclined tube is very easy to block during the actual operation process, which directly affects the effect of mud-water separation. Regular backwashing is required to ensure its operation effect. The backwashing system is relatively complicated, and the water outlet effect will be affected during backwashing. ; Inclined plates and tubes are made of PP or PE material, with average strength, not resistant to ultraviolet rays, and a service life of 3 to 5 years, and it is difficult to replace and maintain; the combination of inclined tubes and inclined plates is used as filler, the civil structure is more complicated, and the construction cost is relatively high. Large; the combination of inclined plate and inclined tube packing is expensive and requires a large investment.

Contents of the invention

The main purpose of this utility model is to provide a BioDopp biochemical reactor with a built-in rectangular sedimentation tank. The rectangular sedimentation tank is used to replace the mud-water separation device installed with inclined plates and inclined tube fillers in the typical BioDopp biochemical reactor to solve the problem of typical BioDopp biochemical The sludge-water separation device of the reactor is easy to block, requires backwashing device, complex civil structure, and large investment.

The utility model relates to a BioDopp biochemical reactor embedded with a rectangular sedimentation tank consisting of an anaerobic zone, anoxic zone, an aerobic zone and a rectangular sedimentation tank; the anaerobic zone is connected with the anoxic zone, and the anoxic zone is connected with the good The oxygen zone is connected, the aerobic zone is connected with the anaerobic zone, and the rectangular sedimentation tank is set above the anoxic zone.

Further, the rectangular sedimentation tank adopts a rectangular sedimentation tank that enters and exits at the same time. The effective water depth of the rectangular sedimentation tank is 3-6m, the width is 6-18m, the effective height of the anoxic zone is 2-4m, and the width is equal to the width of the rectangular sedimentation tank.

Further, a BioDopp biochemical reactor with a built-in rectangular sedimentation tank also includes a rectangular sedimentation tank inlet tank, a rectangular sedimentation tank outlet tank and a mud collection tank; the rectangular sedimentation tank inlet tank and the rectangular sedimentation tank outlet tank are arranged on the rectangular sedimentation tank On one side, the mud collecting tank is arranged on the other side of the rectangular sedimentation tank. One end of the mud collecting tank is connected with the water inlet tank, and the other end is connected with the mud discharge pipe.

Further, the rectangular sedimentation tank adopts a reciprocating suction sludge scraper or a chain plate type sludge scraper or a hydraulic sludge scraper, and the collected sludge is pumped to the sludge collection tank.

Further, a BioDopp biochemical reactor with embedded rectangular sedimentation tank also includes an air lifter, the air lifter is arranged between the anoxic zone and the aerobic zone, and the air lifter is connected to the anoxic zone and the air lifter. The thrusters are connected to the aerobic zone.

Further, a submersible plug flow mixer is installed in the anaerobic zone, and the stirring power is 2~6W/m ³ .

The utility model relates to a BioDopp biochemical reactor with a built-in rectangular sedimentation tank, while continuing the technological advantages of a typical BioDopp biochemical reactor, it makes the water quality of the whole reactor more stable, the structure is simpler, and the number of required equipment Greatly reduced, lower investment costs.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 shows the top view structural representation of the embodiment of the BioDopp biochemical reactor of a kind of built-in rectangular sedimentation tank according to the utility model; And

Fig. 2 shows the schematic diagram of the A-A sectional structure of Fig. 1;

FIG. 3 shows a schematic diagram of the cross-sectional structure along B-B of FIG. 1 .

Wherein, the above-mentioned accompanying drawings include the following reference signs:

1. Inlet tank; 2. Anaerobic zone; 3. Anoxic zone; 4. Air lifter; 5. Aerobic zone; 6. Rectangular sedimentation tank inlet tank; 7. Rectangular sedimentation tank; Sink; 9. Mud collection tank.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

As shown in Figure 1, Figure 2 and Figure 3, the embodiment of the present invention provides a BioDopp biochemical reactor with a built-in rectangular sedimentation tank. The sewage to be treated enters the water inlet tank 1, mixes with the return sludge in the sludge collection tank 9, and then enters the anaerobic zone 2 by gravity, where the release of phosphorus and the ammoniation of organic ammonia are realized, and part of the sludge is removed at the same time. Target pollutants; the sewage in anaerobic zone 2 flows vertically downwards and mixes with the mud-water mixture returning from aerobic zone 5, and then enters anoxic zone 3, and a submersible plug-flow mixer is set in anaerobic zone 2, and the anoxic zone 3 The inner mud-water mixture is stirred to realize the function of removing most of the total nitrogen in the anoxic zone 3; the end of the anoxic zone 3 is connected to the bottom of the air lifter 4, and through the lifting effect of the air lifter 4, the mud-water mixture flows continuously Aerobic zone 5; in the aerobic zone 5, an aerobic environment is created through the blower aeration system to remove target pollutants such as COD and ammonia nitrogen; the end of the aerobic zone 5 is connected to the rectangular sedimentation tank inlet tank 6, and part of the mud-water mixture enters the rectangular sedimentation tank The inlet tank 6 of the sedimentation tank is evenly distributed to the entire length section of the rectangular sedimentation tank 7 through the inlet tank 6 of the rectangular sedimentation tank; The liquid is collected through the outlet tank 8 of the rectangular sedimentation tank and discharged from the BioDopp biochemical reactor; the sludge at the bottom of the rectangular sedimentation tank 7 is collected by the suction mud scraper and then pumped to the sludge collection tank 9, and most of the sludge in the sludge collection tank 9 is returned to the inlet. In tank 1, the remaining sludge is discharged from the BioDopp biochemical reactor through the sludge discharge pipe.

Example 1.

Example 1: A BioDopp biochemical treatment reactor embedded in a rectangular sedimentation tank that treats 15,000 tons of municipal sewage on a certain day, the anaerobic zone 2 is 12m long, 9m wide, and the effective water depth is 7.5m; the anoxic zone 3 is 54m long, wide The length of the aerobic zone 5 is 66m, the width is 10m, and the effective water depth is 7.5m; the rectangular sedimentation tank 7 is 54m long, 12m wide, and the effective water depth is 4.8m. The inlet tank 6 of the rectangular sedimentation tank and the outlet tank 8 of the rectangular sedimentation tank are on one side of the rectangular sedimentation tank 7. The inlet tank 6 of the rectangular sedimentation tank has a length of 54m, a width of 0.5m, and an effective water depth of 1.0m. The length of the outlet tank 8 of the rectangular sedimentation tank is 56m in width, 0.5m in width, and 0.8m effective water depth; the mud collection tank 9 is on the other side of the rectangular sedimentation tank 7, and the mud collection tank 9 has a length of 65m, a width of 0.3m, and an effective water depth of 0.5m; the mud collection tank One end of 9 is connected with the water inlet tank 1, the length of the water inlet tank 1 is 12m, the width is 1.0m, and the effective water depth is 0.8m; Use 1 as backup, the flow rate is 80m ³ /h, and the head is 12m. Rectangular sedimentation tank 7 adopts a reciprocating suction mud scraper with a span of 12m and a walking speed of 1m/min. It is equipped with 3 suction dredge pumps, each with a flow rate of 200m ³ /h and a head of 6m. The sludge collected by the suction mud scraper The mud is pumped to the mud collection tank 9; one end of the anoxic zone 3 is connected to the anaerobic zone 2, and the bottom surface of the anoxic zone 2 and the anoxic zone 3 is at the same height, and two submersible plug-flow mixers are set in the anaerobic zone 2 to push The flow direction is the direction of the anoxic zone 3, the stirring power is 4W/m ³ , the impeller diameter of the submersible plug flow mixer is 1600mm, the rotating speed is 43rpm, and the power is 3.5kW. The pusher 4 is divided into 4 groups, the length of each group is 3m, the width is 1m, and the liquid level lift height is 50mm.

Example 2.

Example 2: A BioDopp biochemical treatment reactor embedded in a rectangular sedimentation tank that treats 30,000 tons of municipal sewage on a certain day, the anaerobic zone 2 is 18m long, 8m wide, and the effective water depth is 8m; the anoxic zone 3 is 72m long, and the width is The aerobic zone 5 is 83m long, 13.5m wide, and 8m effective water depth; the rectangular sedimentation tank 7 is 72m long, 18m wide, and 5.1m effective water depth. The inlet tank 6 of the rectangular sedimentation tank and the outlet tank 8 of the rectangular sedimentation tank are on one side of the rectangular sedimentation tank 7. The inlet tank 6 of the rectangular sedimentation tank has a length of 72m, a width of 0.8m, and an effective water depth of 1.2m. The length of the outlet tank 8 of the rectangular sedimentation tank is 74m in width, 0.8m in width, and 1.0m effective water depth; the mud collection tank 9 is on the other side of the rectangular sedimentation tank 7, and the mud collection tank 9 has a length of 82m, a width of 0.4m, and an effective water depth of 0.5m; the mud collection tank 9 One end is connected to the water inlet tank 1, the length of the water inlet tank 1 is 18m, the width is 1.0m, and the effective water depth is 1.2m; the other end of the mud collection tank 9 is connected to the mud discharge pipe, and the mud discharge pump is installed dry. 1 spare, the flow rate is 160m ³ /h, and the head is 12m. Rectangular sedimentation tank 7 adopts 2 sets of chain plate type mud scraper, the working length of a single chain plate type mud scraper is 72m, the width is 9m, the walking speed of the chain plate is 1.5m/min, and it is equipped with 6 sets of dredge pumps, and the flow rate of a single set is 200m ³ /h, the head is 6m, the sludge collected by the suction pump is pumped to the sludge collection tank 9; one end of the anoxic zone 3 is connected to the anaerobic zone 2, and the bottom of the anoxic zone 2 and the anoxic zone 3 are at the same height. Three submersible plug flow mixers are set in the anaerobic zone 2, the plug flow direction is the direction of the anoxic zone 3, the stirring power is 3.6W/m ³ , the impeller diameter of the submersible plug flow mixer is 2200mm, the speed is 43rpm, and the power is 5.5kW. The other end of the oxygen zone 3 is connected with the air lifter 4, and the air lifter 4 is divided into 6 groups, the length of each group is 3m, the width is 1m, and the liquid level lift height is 80mm.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be included within the protection scope of the present utility model.

Claims (6)

1. a kind of BioDopp biochemical reactor of embedded rectangular settling tank, it is characterized in that, comprise anaerobic zone, anoxic zone, aerobic zone and rectangular settling tank; Described anaerobic zone is communicated with described anoxic zone, so The anoxic zone communicates with the aerobic zone, the aerobic zone communicates with the anaerobic zone, and the rectangular sedimentation tank is arranged above the anoxic zone. 2. the BioDopp biochemical reactor of a kind of embedded rectangular settling tank according to claim 1, is characterized in that, described rectangular settling tank adopts the rectangular settling tank that goes in while going out, and effective water depth is 3 ~ 6m, and width is 6~18m, the effective height of the anoxic zone is 2~4m, and the width is equal to that of the rectangular sedimentation tank. 3. the BioDopp biochemical reactor of a kind of embedded rectangular settling tank according to claim 1, is characterized in that, also comprises rectangular settling tank water inlet tank, rectangular settling tank outlet tank and sludge collection tank; Described rectangular settling tank inlet The outlet tank of the water tank and the rectangular sedimentation tank is arranged on one side of the rectangular sedimentation tank, and the mud collection tank is arranged on the other side of the rectangular sedimentation tank; one end of the mud collection tank is connected to the water inlet tank, and the other end is connected to the mud discharge tank. tube connection. 4. the BioDopp biochemical reactor of a kind of embedded rectangular settling tank according to claim 1, is characterized in that, described rectangular settling tank adopts reciprocating suction mud scraper or chain plate type mud scraper or hydraulic type mud scraper , the collected sludge is pumped to the sludge collection tank. 5. the BioDopp biochemical reactor of a kind of built-in rectangular sedimentation tank according to claim 1, is characterized in that, also comprises air lifter, and described air lifter is arranged on described anoxic zone and described well. Between the oxygen zones, and the air lifter communicates with the anoxic zone and the air lifter communicates with the aerobic zone. 6 . The BioDopp biochemical reactor with a built-in rectangular sedimentation tank according to claim 1 , wherein a submersible plug-flow agitator is installed in the anaerobic zone, and the agitation power is 2-6W/m ³ .