Inclined plate precipitator for sewage treatment as well as water flow distributor and secondary water distribution tank of inclined plate precipitator

Abstract

The invention discloses a water flow distributor, and relates to the field of sewage treatment, the water flow distributor comprises a closed transverse pipe, one side of the transverse pipe is communicated with a water inlet pipe, the top surface of the transverse pipe is connected with a plurality of flow dividing pipes, the flow dividing pipes are respectively inserted into a plurality of bee eyes from bottom to top, and a distance is reserved between the flow dividing pipes and the tops of the bee eyes; the inclined plate precipitator comprises a plurality of groups of water flow distributors, transverse pipes in two adjacent groups of water flow distributors are arranged in an up-and-down staggered manner, and the number of shunting pipes is different; one side of each transverse pipe is communicated with the water inlet pipe through a secondary distribution pipe; the secondary water distribution tank for the inclined plate precipitator is arranged at the upper part of the inclined plate precipitator and comprises a tank body, a water inlet pipe on the tank body and a plurality of secondary distribution pipes on the side part of the tank body, according to the invention, the sewage treatment efficiency is improved by 8-10 times compared with the traditional sewage treatment efficiency, and the treatment time is also accelerated by 8-10 times.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, in particular to an inclined plate sedimentation tank for sewage treatment and a water flow distributor and a secondary water distribution tank thereof. Background Art

[0002] Both industrial and urban sewage treatment require the use of honeycomb inclined plates, that is, honeycomb inclined plates are set in the sedimentation tank to filter the sewage through the sedimentation effect of the honeycomb inclined plates. The current equipment processing capacity is: 0.7~1.0t / m 3 h. During industrial operation, this design specification cannot be exceeded. Otherwise, increasing the flow rate will directly affect the effluent quality and fail to meet the standards. As a result, the current inclined tube sedimentation tank has a large volume but slow sedimentation efficiency and a small amount of sedimentation per unit time.

[0003] Based on the above purpose, an inclined plate sedimentation tank and its water flow distributor and secondary water distribution tank for sewage treatment were developed. Summary of the invention

[0004] The purpose of the present invention is to provide an inclined plate sedimentation tank for sewage treatment, which has reduced floor space and higher treatment efficiency, and a water flow distributor and a secondary water distribution tank thereof.

[0005] The technical solution adopted to achieve the purpose of the present invention is:

[0006] A water flow distributor comprises a closed transverse pipe, one side of the transverse pipe is connected to a water inlet pipe, the top surface of the transverse pipe is connected to a plurality of diverter pipes, the outlet water pressure of the diverter pipes is less than the outlet water pressure of the water inlet pipe, the diverter pipes are respectively inserted into a plurality of honeycomb eyes from bottom to top and have a distance from the top of the honeycomb eyes; the honeycomb eyes are through holes on a honeycomb inclined plate;

[0007] Furthermore, the water flow rate of the diversion pipe is ≤480ml / h;

[0008] Preferably, the number of the shunt pipes is equal to the number of the bee eyes on the inclined plate, that is, each bee eye is provided with a shunt pipe and the shunt pipe is inserted into the bee eye from bottom to top and has a distance from the top of the bee eye;

[0009] Further, the cross tube and the shunt tube are arranged in any shape, that is, the shapes of the cross tube and the shunt tube include but are not limited to a cuboid or a cylinder; the cross tube is preferably a cuboid, and the shunt tube is preferably a cylinder; the shunt tubes are equidistantly distributed or the spacing increases or decreases or is arranged in a disordered manner, preferably equidistantly distributed; the number of shunt tubes on each cross tube is between 6 and 30;

[0010] The length of the transverse tube is adjusted according to demand, between 500mm-2000mm, preferably 1000mm;

[0011] An inclined plate sedimentator comprises a plurality of groups of water flow distributors, wherein the transverse tubes in two adjacent groups of water flow distributors are staggered in upper and lower arrangement and have different numbers of flow distribution tubes; one side of the plurality of transverse tubes are connected to the water inlet pipe through the secondary distribution pipe respectively;

[0012] Furthermore, the diverter pipe is inserted into the inclined plate and attached to the inclined plate; a valve for controlling the flow rate is provided on the water inlet pipe, and the valve is a regulating valve, which controls the water output per unit time by adjusting the valve to further control the flow rate entering each secondary distribution pipe;

[0013] The secondary distribution pipe includes a vertical pipe I connected to the water inlet pipe, an oblique pipe connected to the vertical pipe I, and a vertical pipe II connected to the oblique pipe and the horizontal pipe in sequence; the shapes of the vertical pipe I, the oblique pipe, and the vertical pipe II are arbitrarily set, including cylindrical or rectangular, preferably rectangular, when it is a rectangular, the circumferential width is between 10-40mm, preferably one side is 15mm long, one side is 30mm long, and the remaining two sides are symmetrically arranged with the above two; further, the length of the vertical pipe I is 100-500mm, preferably 250mm; the length of the oblique pipe is 300-2000mm, preferably 1000mm, and the length of the vertical pipe II is 200-800mm;

[0014] Furthermore, in the upper and lower transverse tubes, the length of the upper transverse tube is equal to the length of the lower transverse tube, and the number of the flow divider tubes on the upper transverse tube is one more than the number of the lower transverse tube;

[0015] Further, the length of the shunt pipe on the lower transverse tube is between 400-800mm, preferably 600mm, the length of the shunt pipe on the upper transverse tube is between 200-600mm, preferably 400mm, the diameter of the shunt pipe is between 8mm-15mm, the center hole distance between the shunt pipes is between 80-110mm, preferably 90mm, the lateral distance between the upper transverse tube and the lower transverse tube is between 20-30mm, preferably 24mm, the longitudinal distance between the upper transverse tube and the lower transverse tube is between 100mm-300mm, preferably 200mm, and the top of the shunt pipe on the upper transverse tube is flush with that on the lower transverse tube;

[0016] The secondary water distribution tank for the inclined plate settler is arranged on the upper part of the inclined plate settler, and comprises a tank body, a water inlet pipe on the tank body and a plurality of secondary distribution pipes on the side of the tank body;

[0017] Furthermore, the water inlet pipe is an inverted "Y"-shaped water inlet pipe, that is, the water flow is split into two streams from a water pipe and enters the box body. The top and bottom of the box body are provided with partitions, and the partitions divide the box body into two parts. The water flows into one part from the water inlet pipe and overflows to the other part when the liquid level reaches a certain height. After the water flows steadily through the partition plate on the top, it flows into several horizontal pipes from several secondary distribution pipes respectively, and flows into the inclined plate through several diversion pipes on the horizontal pipes.

[0018] A sewage treatment method, wherein several groups of water flow distributors are arranged in a sedimentation tank and at the bottom of an inclined plate. The sewage sedimentation process is as follows: after the sewage is respectively introduced into several horizontal pipes by controlling the flow rate and / or through a plurality of secondary distribution pipes, it is again respectively introduced into several bee eyes through the diversion pipes, and the water flow rate of the diversion pipe is controlled to be ≤480ml / h.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The water flow rate of the horizontal pipe entering the water flow distributor is large. The impact force of the incoming water on the settled sludge is eliminated through the horizontal pipe in the water flow distributor. The water flow rate is kept large through the diversion effect of the diversion pipe. Since the diversion pipes are inserted into several bee eyes from bottom to top and have a distance from the top of the bee eyes, the water flow rate of the diversion pipe is ≤480ml / h. Therefore, the water flow rate of the diversion pipe is less than the flocculation sedimentation gravity. The cross-flow effect does not affect the sedimentation speed of the flocculants in the sewage. Therefore, after using the water flow distributor, the sewage sedimentation tank does not need to build an additional large sedimentation tank to quickly precipitate the flocculants in the sewage, and the effect is remarkable.

[0021] Since each bee eye is provided with a shunt pipe and the shunt pipe is inserted into the bee eye from bottom to top and has a distance from the top of the bee eye, the water output per unit time is large and does not affect the sedimentation of flocs. The water output flow rate of the shunt pipe is ≤480ml / h. By controlling the water output flow rate of the shunt pipe, the rising flow rate and the descending flocs are staggered, thereby improving the water output quality and greatly increasing the water output.

[0022] By making several groups of water flow distributors into inclined plate sedimentators, and the horizontal pipes in two adjacent groups of water flow distributors are staggered up and down and the number of diversion pipes is different, the sedimentation area of ​​sludge is expanded when it descends, and the interception problem caused by all horizontal pipes being arranged side by side is prevented. In addition, the water inlet flow rate is increased, the water inlet mode is changed, and the resistance of water flow rise is eliminated.

[0023] The secondary water distribution tank or water inlet pipe used for the inclined plate settler is equipped with a flow control valve, so the water flow rate is controlled, and the water output per unit time can be guaranteed without affecting the sedimentation. Since several secondary distribution pipes are set up, not only the water output per unit time is large, but also the sedimentation effect is fast and good;

[0024] By cooperating with this sewage treatment method, the sewage treatment efficiency is increased by 8 to 10 times of the traditional one, that is, from 0.8t / m 2 h, increased to 6.4~8.0t / m 2 ﹒ h. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a front view of Embodiment 1 of the present invention;

[0026] Figure 2 is a stereogram of embodiment 1 of the present invention;

[0027] Figure 3 The three-dimensional structure of Example 2 of the present invention Figure 1 ;

[0028] Figure 4 is a stereogram of embodiment 3 of the present invention;

[0029] Figure 5 This is a schematic diagram of the secondary water distribution tank;

[0030] Figure 6 It is a top view of Embodiment 2 of the present invention;

[0031] Figure 7 The third embodiment of the present invention is Figure 2 ;

[0032] Figure 8 This is a schematic diagram of a case where only a plurality of 6 mm holes are opened on the transverse tube in Example 2 of the present invention but no diverter tube is provided;

[0033] Fig. 9 It is a rear view of embodiment 3 of the present invention;

[0034] Fig.10 It is a rear perspective view of embodiment 3 of the present invention;

[0035] 1. Horizontal pipe, 2. Diversion pipe, 1-1. Upper horizontal pipe, 1-2. Lower horizontal pipe, 3. Secondary water distribution tank, 4. Secondary distribution pipe, 5. Water inlet pipe, 6. Partition plate; 4-1. Vertical pipe I; 4-2. Oblique pipe; 4-3. Vertical pipe II. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0038] Embodiment 1 Small test stage:

[0039] like Figure 1 , Figure 2 A water flow distributor is shown, comprising a closed transverse tube 1, which is a rectangular parallelepiped, with a length of 1000 mm, a height of 30 mm, and a width of 15 mm. The transverse tube 1 is provided with a plurality of holes, and a plurality of diverter pipes 2 are respectively arranged on the transverse tube 1 on the outer circumference of each hole, that is, a side of the transverse tube 1 with the diverter pipe 2 is 15 mm, and one side of the transverse tube 1 is connected with a water inlet pipe 5. Ten cylindrical diverter pipes 2 are evenly distributed on the top surface of the transverse tube 1, and the diverter pipes 2 have a diameter of 10 mm and a height of 500 mm. The spacing between the diverter pipes 2 and the diverter pipes 2 is 100 mm. The water flow distributor is inserted into the bottom of the inclined plate of the sedimentation tank, and the number of bee eyes on the single row of inclined plates is 10, and a diverter pipe 2 is inserted into each bee eye with an insertion length of 50 mm. The height of the inclined plate is 1000 mm, and the water inlet flow rate is 6-8 t / m 3 ·h. According to actual measurement, the water flow rate of the diverter pipe 2 is 400ml / h, that is, the flow rate of each hole is 400ml / h, and the water flow rate of each square meter of inclined plate is 6-8t / m 3 ·h, so the processing volume per unit time is large and does not affect the sedimentation of flocs.

[0040] Example 2 Pilot stage:

[0041] like Figure 3 , Figure 6 , Figure 7 , Figure 8The inclined plate sedimentation tank shown in the figure comprises two groups of water flow distributors, wherein the transverse tubes 1 in the two groups of water flow distributors are arranged alternately at the upper and lower parts, and the bottoms of the upper transverse tubes 1-1 and the lower transverse tubes 1-2 are arranged at the bottom of the sedimentation tank through 90° right-angle brackets, the length of the upper transverse tube 1-1 is equal to the length of the lower transverse tube 1-2, the lengths of the upper transverse tube 1-1 and the lower transverse tube 1-2 are both 1020 mm, the length of the diverter tube 2 on the lower transverse tube 1-1 is 600 mm, and the length of the diverter tube 2 on the upper transverse tube 1-2 is 400 mm; a plurality of holes are opened on the transverse tube 1, and a plurality of the diverter tubes 2 are provided. The cross tubes 1 are respectively arranged on the outer peripheral surfaces of the holes. There are 11 shunt tubes 2 on the upper cross tube 1-1, and the spacing between the shunt tubes 2 is 90 mm; there are 10 lower cross tubes 1-2, and the spacing between the shunt tubes 2 is 100 mm; the diameter of the shunt tube 2 is 11 mm, the lateral distance between the upper cross tube 1-1 and the lower cross tube 1-2 is 24 mm, and the longitudinal distance between the upper cross tube 1-1 and the lower cross tube 1-2 is 200 mm. The tops of the shunt tubes 2 on the upper cross tube 1-1 and the lower cross tube 1-2 are flush;

[0042] There is a honeycomb inclined plate in the sedimentation tank. The volume of the inclined plate in the sedimentation tank is 1m 3 , multiple rows of honeycomb eyes are arranged on the honeycomb inclined plate, with a total of 305 holes, one row of 10 honeycomb eyes, and the other row of 11 honeycomb eyes. The shunt pipes 2 on the upper transverse pipe 1-1 and the lower transverse pipe 1-2 are inserted into the honeycomb eyes from the bottom of the inclined plate, and the shunt pipes 2 are attached to the inclined plate after being inserted into the inclined plate; a shunt pipe 2 is inserted into each honeycomb eye, and the insertion length is 50mm; one side of the two transverse pipes 1 is connected to the water inlet pipe 5 through the secondary distribution pipe 4, and the secondary distribution pipe 4 sequentially includes a vertical pipe Ⅰ4-1 connected to the water inlet pipe 5, an oblique pipe 4-2 connected to the vertical pipe Ⅰ4-1, and a shunt pipe 4-2 connected to the oblique pipe 4-2 and the transverse pipe 1 Vertical pipe II 4-3; the vertical pipe I 4-1, the oblique pipe 4-2, and the vertical pipe II 4-3 are all in the shape of a cuboid, the circumferential width of the cuboid is 15 mm on one side and 30 mm on the other side, the length of the vertical pipe II 4-3 is 250 mm; the length of the oblique pipe 4-2 is 1000 mm; the water inlet pipe 5 is provided with a valve for controlling the flow rate, and the flow rate entering each secondary distribution pipe 4 is further controlled by adjusting the valve to control the water output per unit time, and the water volume is evenly distributed through the valve and the secondary distribution pipe 4, and the potential energy height and the unique diversion water replenishment are utilized to increase the water production per unit area;

[0043] After repeated tests under the above conditions, the water flow rate of the diverter pipe 2 is 400ml / h. This embodiment improves the treatment efficiency by 8 to 10 times that of the general inclined plate sedimentator by forcibly changing the water inlet direction and the sludge settling direction to perform cross-flow operation, that is, from 0.8t / m2 .h, increased to 6.4~8.0t / m 2 .h, so the processing volume per unit time is large and does not affect the sedimentation of flocs.

[0044] Example 3 is applied to the sewage treatment plant stage:

[0045] like Figure 4 , Fig. 9 , Fig.10 The sewage sedimentation tank is used in a sewage sedimentation tank in an industrial park in Dagang District. The capacity of the sewage sedimentation tank is 30m 3 The diameter of the pool is 6m, the rising velocity of water in the vertical flow sedimentation tank is 0.6-1.0mm / s, and there are several 1m 3 The shape of the inner wall of the sewage sedimentation tank is set according to the inclined plate. There are 29 rows of each inclined plate, with a total of 305 holes per square meter.

[0046] Multiple Figure 4 The water flow distributor shown becomes an inclined plate settler after being fixed by a 90° right-angle bracket and other means. The inclined plate settler is arranged at the lower part of the inclined plate. The secondary water distribution tank 3 is arranged at the upper part of the sedimentation tank and the inclined plate. The secondary water distribution tank 3 is connected to the inclined plate settler through a secondary distribution pipe 4. The secondary distribution pipe 4 is arranged on one side of the inclined plate. The inclined plate settlers are provided in multiple groups, and the secondary water distribution tank 3 can be provided with only one large secondary water distribution tank 3.

[0047] The secondary water distribution tank 3 used in the inclined plate sedimentation tank includes a tank body, a water inlet pipe 5 on the tank body, and 29 secondary distribution pipes 4 on the side of the tank body; the size of the secondary water distribution tank 3 is 1000mm long, 350mm wide, and 200mm high. The secondary water distribution tank 3 has sufficient water supply, and the surplus of each pipe is more than 20%. Figure 5 The water inlet pipe 5 shown is an inverted "Y"-shaped water inlet pipe 5, that is, the water flow is divided into two streams from a water pipe and enters the box body. The top and bottom of the box body are provided with partition plates 6. The partition plate 6 divides the box body into two parts. The water flows from the water inlet pipe 5 into one part and overflows to the other part when the liquid level reaches a certain height. After the water flows steadily through the partition plate 6 on the top, it flows into several horizontal pipes 1 from several secondary distribution pipes 4 respectively.

[0048] The secondary distribution pipe 4 includes in sequence a vertical pipe Ⅰ4-1 connected to the water inlet pipe 5, an oblique pipe 4-2 connected to the vertical pipe Ⅰ4-1, and a vertical pipe Ⅱ4-3 connected to the oblique pipe 4-2 and the horizontal pipe 1; the vertical pipe Ⅰ4-1, the oblique pipe 4-2, and the vertical pipe Ⅱ4-3 are all in the shape of a rectangular parallelepiped, and the circumferential width of the rectangular parallelepiped has one side length of 15mm and one side length of 30mm. The length of the vertical pipe Ⅱ4-3 is 250mm; the length of the oblique pipe 4-2 is 1000mm; the height of the horizontal pipe 1 is 30mm, the top surface width is 15mm, and the length is 1020mm. A plurality of holes are opened on the horizontal pipe 1, and a plurality of diversion pipes 2 are respectively arranged on the outer peripheral surface of each hole of the horizontal pipe 1. The sewage flows into the inclined plate through the plurality of diversion pipes 2 on the horizontal pipe 1. There are 10 holes in each odd row and 11 holes in each even row in the horizontal pipe 1. Figure 8 As shown, the diameter of each hole is 6mm, and the number of the diverter pipes 2 on the first and the last ones are both 10. Further, the diameter of the diverter pipe 2 is 10mm, the number of the diverter pipes 2 on the upper cross tube 1-1 is 11, and the spacing between the diverter pipes 2 is 90mm; the number of the lower cross tubes 1-2 is 10, and the spacing between the diverter pipes 2 is 100mm; the length of the diverter pipe 2 on the lower cross tube 1-1 is 600mm, and the length of the diverter pipe 2 on the upper cross tube 1-2 is 400mm; the lateral distance between the upper cross tube 1-1 and the lower cross tube 1-2 is 20mm, and the longitudinal distance between the upper cross tube 1-1 and the lower cross tube 1-2 is 200mm, and the tops of the diverter pipes 2 on the upper cross tube 1-1 and the lower cross tube 1-2 are flush; the overflow water depth at the top of the inclined plate water outlet is 200mm.

[0049] The outlet flow rate of the diverter pipe 2 is 480ml / h. After repeated tests under the above conditions, the water inlet direction and the sludge settling direction are forced to change for cross-flow operation, which improves the treatment efficiency by 8 to 10 times when the inclined plate sedimentator is currently used, and the treatment time is also accelerated by 8 to 10 times, that is, from 0.8t / m 2 .h, increased to 6.4~8.0t / m 2 .h, water inlet flow rate is 4t / m 3 ·h, treating 20t of water, compared with the horizontal flow rate of 10-25mm / s in the previous horizontal flow sedimentation tank, the maximum surface load is 0.8 cubic meters / square meters·hour, and it takes 1-3 hours to complete the treatment. The application has achieved remarkable results.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A water flow distributor, characterized in that: It comprises a closed transverse pipe, one side of which is connected to a water inlet pipe, the top surface of which is connected to a plurality of diversion pipes, which are respectively inserted into a plurality of bee eyes from bottom to top and are at a distance from the top of the bee eyes.

2. A water flow distributor according to claim 1, characterized in that: The number of the shunt pipes is equal to the number of the bee eyes on the inclined plate, that is, each bee eye is provided with a shunt pipe, and the shunt pipe is inserted into the bee eye from bottom to top and has a distance from the top of the bee eye.

3. A water flow distributor according to claim 1 or 2, characterized in that: The water outlet flow rate of the diversion pipe is ≤480ml / h.

4. A water flow distributor according to any one of claims 1 to 3, characterized in that: The cross tube and the shunt tube are arranged in any shape, that is, the shape of the cross tube and the shunt tube includes but is not limited to a cuboid or a cylinder; The diverter pipes are evenly spaced, or have increasing or decreasing spacing, or are arranged in a disordered manner. The number of diverter pipes on each transverse pipe is between 6 and 30.

5. An inclined plate settler, characterized in that: It comprises several groups of the water flow distributors as described in any one of claims 1 to 4, wherein the transverse tubes in two adjacent groups of the water flow distributors are staggered up and down and have different numbers of diversion tubes; one side of the plurality of transverse tubes are connected to the water inlet pipe through the secondary distribution pipe respectively.

6. The inclined plate settler according to claim 5, characterized in that: The diverter pipe is inserted into the inclined plate and attached to the inclined plate; a valve for controlling flow is provided on the water inlet pipe; The secondary distribution pipe includes, in sequence, a vertical pipe I connected to the water inlet pipe, an oblique pipe connected to the vertical pipe I, and a vertical pipe II connected to the oblique pipe and the horizontal pipe; In the upper and lower transverse tubes, the number of the shunt tubes on the upper transverse tube is one more than the number of the lower transverse tubes.

7. An inclined plate settler according to claim 5 or 6, characterized in that: The shapes of the vertical tube I, the oblique tube, and the vertical tube II include a cylinder or a cuboid. When the cuboid is used, the circumferential width is between 10-40 mm. The length of the vertical tube I is between 100-500 mm; the length of the oblique tube is between 300-2000 mm, and the length of the vertical tube II is between 200-800 mm. The length of the transverse tube is between 500mm and 2000mm; The length of the diverter pipe on the lower cross tube is between 400-800mm, the length of the diverter pipe on the upper cross tube is between 200-600mm, the center hole distance between the diverter pipes is between 80-110mm, the lateral distance between the upper cross tube and the lower cross tube is between 20-30mm, the longitudinal distance between the upper cross tube and the lower cross tube is between 100mm-300mm, and the tops of the diverter pipes on the upper cross tube and the lower cross tube are flush.

8. An inclined plate settler according to any one of claims 5 to 7, characterized in that: It also includes a secondary water distribution tank for the inclined plate settler, which is arranged on the upper part of the inclined plate settler and includes a box body, a water inlet pipe on the box body and a plurality of secondary distribution pipes on the side of the box body.

9. The inclined plate settler according to claim 8, characterized in that: The water inlet pipe is an inverted "Y" shaped water inlet pipe, that is, the water flow is split into two streams from a water pipe and enters the box body. The top and bottom of the box body are provided with partitions, and the partitions divide the box body into two parts. The water flows from the water inlet pipe into one part and overflows to the other part when the liquid level reaches a certain height. After the water flows steadily through the partition plate on the top, it flows from several secondary distribution pipes into several horizontal pipes respectively, and flows into the inclined plate through several diversion pipes on the horizontal pipes.

10. A method for treating sewage, comprising: placing a plurality of water flow distributors as claimed in any one of claims 1 to 4 in a sedimentation tank at the bottom of the inclined plate, characterized in that: The sewage sedimentation process is as follows: after the sewage is respectively introduced into several horizontal pipes by controlling the flow rate and / or through a plurality of the secondary distribution pipes, it is again respectively introduced into several bee eyes through the diversion pipes, and the water flow rate of the diversion pipe is controlled to be ≤480ml / h.

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