CN111646566A

CN111646566A - High-efficient biological denitrogenation equipment of river course water

Info

Publication number: CN111646566A
Application number: CN202010532221.9A
Authority: CN
Inventors: 刘克伦; 张赈; 刘克镭; 钱永刚
Original assignee: Zhejiang Aikt Environmental Technology Co ltd
Current assignee: Zhejiang Aikt Environmental Technology Co ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2020-09-11

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a high-efficiency biological denitrification device for a river water body, which comprises a shell, wherein a fixed plate is connected inside the shell, a first cavity is formed between the fixed plate and the shell, spherical ceramsite filler is filled at the upper end of the fixed net, support frames are connected on two sides inside the shell, a baffle net is connected at the upper end of each support frame, a power mechanism is connected at the upper end of the shell, a hairbrush is connected on each power mechanism, the bottom end of the hairbrush is in contact with the baffle net, water body buffer mechanisms are connected on two sides inside the shell, and the hairbrush. When sewage flows through the spherical ceramsite filler from bottom to top, the microbial film on the spherical ceramsite filler absorbs organic pollutants in the sewage to serve as nutrient substances for metabolism of the organic pollutants, and gas and water at the bottom of the shell flow upwards under the condition that the dispersion mechanism provides aeration oxygen supply, so that organic matters in the sewage are subjected to aerobic degradation, and the denitrification effect is better.

Description

High-efficient biological denitrogenation equipment of river course water

Technical Field

The invention relates to the technical field of wastewater treatment, in particular to a high-efficiency biological denitrification device for a river water body.

Background

Nitrifying bacteria are a class of aerobic autotrophic bacteria, including nitrites and nitrates. The two types of bacteria are obligate aerobic bacteria, oxygen is used as a final electron acceptor in the oxidation process, energy required by growth is obtained from the oxygen, and in a wastewater biochemical treatment device, the sludge age must not be shorter than the generation time of microorganisms in activated sludge to enable the microorganisms to fully exert the purification effect, otherwise, the sludge in an aeration tank is completely lost.

Under the condition of a river channel, sludge rich in microorganisms is easy to lose or settle to become bottom sludge, so that the designed sludge age which is usually required by nitrogen and phosphorus removal of a sewage treatment plant cannot be reached, the basic requirement of creating conditions to realize nitrogen removal is met, and the method is a fundamental way for high-efficiency and rapid nitrogen removal of the river channel. Specifically, the key of the denitrification of the river channel is to improve the concentration of nitrifying bacteria in the water body and the retention time of sludge in the water body.

In the prior art, nitrogen in the wastewater is removed by an activated sludge method and a contact oxidation method, the removal effect is poor, and the nitrogen content in the wastewater is still high after treatment.

Disclosure of Invention

The invention aims to solve the defect of poor denitrification effect in the prior art, and provides a high-efficiency biological denitrification device for a river water body.

In order to achieve the purpose, the invention adopts the following technical scheme:

designing a high-efficiency biological denitrification device for a river water body, comprising a shell, wherein a fixed plate is connected inside the shell, a first cavity is arranged between the fixed plate and the shell, one side of the first cavity is communicated with a backwashing air inlet pipe, the other side of the first cavity is communicated with a water inlet pipe, the water inlet pipe is communicated with a backwashing water inlet pipe, the fixed plate is connected with a plurality of nozzles, the inlet of each nozzle is communicated with the first cavity, a fixed net is connected inside the shell and positioned above the fixed plate, a second cavity is arranged between the fixed net and the fixed plate, the second cavity is communicated with an aeration pipe, one end of the aeration pipe positioned inside the second cavity is communicated with a dispersion mechanism, the upper end of the fixed net is filled with spherical ceramsite filler, and two sides inside the shell are connected with a support frame, the water-saving ceramic particle filter is characterized in that a blocking net is connected to the upper end of the support frame and located above the spherical ceramic particle filler, a water outlet pipe is communicated with the shell and located above the blocking net, a backwashing water drainage pipe is communicated with the water outlet pipe, a power mechanism is connected to the upper end of the shell, a brush is connected to the power mechanism, the bottom end of the brush is in contact with the blocking net, water body buffer mechanisms are connected to two sides of the interior of the shell, and the brush is located between the two water body buffer mechanisms.

Preferably, the dispersing mechanism comprises a dispersing pipe, the dispersing pipe is communicated with the aeration pipe, and a plurality of aeration openings are formed in the dispersing pipe.

Preferably, the power mechanism comprises a fixing frame, the fixing frame is connected with the shell, a movable groove is formed in the fixing frame, a motor is fixedly connected to one side of the fixing frame, a rotating shaft is connected to the output end of the motor in a driving mode, one end of the rotating shaft extends into the movable groove, a threaded rod is connected to one end of the rotating shaft, one end of the threaded rod is rotatably connected with the movable groove, a moving block is connected to the threaded rod in a threaded mode, the moving block is matched with the movable groove, and the bottom end of the movable groove is connected with the brush.

Preferably, microbial films are arranged on the surface of the spherical ceramsite filler and in the space of the opening cavity.

Preferably, the inside both sides of casing all are connected with fixed frame, fixed frame is located keep off the top of net, every the bottom of fixed frame all is connected with shovel net, every one side of shovel net all with keep off the net and contact.

Preferably, the water body buffer mechanism comprises two fixed seats, each fixed seat is connected with the shell, and a baffle is connected between the two fixed seats.

Preferably, the two sides of the upper end of the baffle are both connected with vertical plates, and each vertical plate is provided with a through hole.

Preferably, the upper end of the baffle is connected with a plurality of reinforcing ribs.

The invention provides a high-efficiency biological denitrification device for a river water body, which has the beneficial effects that:

when sewage flows through the spherical ceramsite filler from bottom to top, the microbial film on the spherical ceramsite filler absorbs organic pollutants in the sewage as nutrient substances for metabolism of the organic pollutants, and the air and water at the bottom of the shell flow upwards under the aeration and oxygen supply provided by the dispersing mechanism, so that organic matters in the sewage are subjected to aerobic degradation and nitrification and denitrification, microorganisms on the surface of the spherical ceramsite filler and adhesive substances generated in metabolism have adsorption effect, so that precipitates of the effluent are few, the spherical ceramsite filler can be subjected to nitrification and denitrification while nitrogen is removed, and the denitrification effect is better.

Drawings

FIG. 1 is a schematic structural diagram of a high-efficiency biological denitrification apparatus for a river water body according to the present invention;

FIG. 2 is a schematic sectional view of a high efficiency biological denitrification apparatus for a river water body according to the present invention;

FIG. 3 is a schematic view of a connection structure of a dispersing mechanism and an aerator pipe in the high-efficiency biological denitrification equipment for a river water body provided by the invention;

fig. 4 is a schematic structural diagram of a fixed frame and a shovel net in the efficient biological denitrification equipment for a river water body provided by the invention.

In the figure: the device comprises a shell 1, a fixing plate 2, a first chamber 3, a backwashing air inlet pipe 4, a water inlet pipe 5, a backwashing water inlet pipe 6, a spray head 7, a fixing net 8, a second chamber 9, an aeration pipe 10, a dispersion pipe 11, an aeration port 12, spherical ceramsite packing 13, a support frame 14, a baffle net 15, a water outlet pipe 16, a backwashing water outlet pipe 17, a fixing frame 18, a movable groove 19, a motor 20, a rotating shaft 21, a threaded rod 22, a moving block 23, a brush 24, a fixing frame 25, a shovel net 26, a fixing seat 27, a baffle 28, a reinforcing rib 29, a through hole 30 and a vertical plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

Referring to fig. 1-4, a high-efficiency biological denitrification device for river water comprises a shell 1, a fixed plate 2 is connected inside the shell 1, a first chamber 3 is arranged between the fixed plate 2 and the shell 1, one side of the first chamber 3 is communicated with a backwashing air inlet pipe 4, the backwashing air inlet pipe 4 is used for introducing gas into the shell 1 after denitrification is finished, an internal mechanism of the shell 1 is flushed, the other side of the first chamber 3 is communicated with a water inlet pipe 5, the water inlet pipe 5 is communicated with a backwashing water inlet pipe 6, the fixed plate 2 is connected with a plurality of nozzles 7, the inlet of each nozzle 7 is communicated with the first chamber 3, a fixed net 8 is connected inside the shell 1, the fixed net 8 is used for supporting spherical ceramsite fillers 13, the fixed net 8 is positioned above the fixed plate 2, a second chamber 9 is arranged between the fixed net 8 and the fixed plate 2, and an aeration pipe 10 is communicated on, the effect of aeration pipe 10 is that let in oxygen, make the organic matter in the waste water obtain aerobic degradation, aeration pipe 10 is located the one end intercommunication of second cavity 9 and has dispersion mechanism, dispersion mechanism's effect is the oxygen dispersion that lets in, fully with spherical haydite filler 13 contact, the upper end packing of fixed network 8 has spherical haydite filler 13, spherical haydite filler 13 surface and opening inner chamber space are equipped with the microbial film, the organic pollutant in the microbial film absorption sewage is as its metabolic nutrient substance of self, and under the condition of providing the aeration oxygen suppliment in filter bed lower part, organic matter in the waste water carries out aerobic degradation.

The two sides in the shell 1 are both connected with a support frame 14, the support frame 14 is used for fixing a baffle net 15, the upper end of the support frame 14 is connected with the baffle net 15, the baffle net 15 is used for filtering large granular substances in wastewater, the baffle net 15 is positioned above the spherical ceramsite packing 13, the shell 1 is communicated with a water outlet pipe 16, the water outlet pipe 16 is positioned above the baffle net 15, the water outlet pipe 16 is communicated with a backwashing water discharge pipe 17, the upper end of the shell 1 is connected with a power mechanism, the power mechanism is used for driving a brush 24 to reciprocate in the horizontal direction, the power mechanism is connected with a brush 24, the brush 24 is used for cleaning granular impurities on the baffle net 15 to avoid the blockage of the baffle net 15, the bottom end of the brush 24 is contacted with the baffle net 15, the two sides in the shell 1 are both connected with water body buffer mechanisms, and the water body buffer mechanisms are used, the brush 24 is located between the two water body damping mechanisms.

Example 2

Referring to fig. 1-4, as another preferred embodiment of the present invention, the difference from embodiment 1 is that the dispersing mechanism includes a dispersing pipe 11, the dispersing pipe 11 is used for dispersing oxygen into the spherical ceramsite packing 13 to provide oxygen for the microbial film, the dispersing pipe 11 is communicated with an aeration pipe 10, a plurality of aeration ports 12 are provided on the dispersing pipe 11, and the aeration ports 12 are used for releasing oxygen.

Example 3

Referring to fig. 1-4, as another preferred embodiment of the present invention, the difference from embodiment 1 is that the power mechanism includes a fixed frame 18, the fixed frame 18 is connected to the housing 1, a movable groove 19 is formed in the fixed frame 18, the movable groove 19 functions to enable a movable block 23 to move in a horizontal direction, a motor 20 is fixedly connected to one side of the fixed frame 18, an output end of the motor 20 is drivingly connected to a rotating shaft 21, one end of the rotating shaft 21 extends into the movable groove 19, one end of the rotating shaft 21 is connected to a threaded rod 22, one end of the threaded rod 22 is rotatably connected to the movable groove 19, the threaded rod 22 is threadedly connected to the movable block 23, the movable block 23 is matched with the movable groove 19, a bottom end of the movable groove 19 is connected to a brush 24, the motor 20 is powered on and then drives the rotating shaft 21 to.

Example 4

Referring to fig. 1 to 4, as another preferred embodiment of the present invention, on the basis of embodiment 1, fixing frames 25 are connected to both sides of the inside of the housing 1, the fixing frames 25 are used for collecting large-particle impurities, the fixing frames 25 are located above the blocking net 15, the bottom end of each fixing frame 25 is connected to a shovel net 26, and one side of each shovel net 26 is in contact with the blocking net 15.

Example 5

Referring to fig. 1-4, as another preferred embodiment of the present invention, the difference from embodiment 1 is that the water buffer mechanism includes two fixing bases 27, the fixing bases 27 are used to fix a baffle 28, each fixing base 27 is connected to the housing 1, the baffle 28 is connected between the two fixing bases 27, the baffle 28 is used to slow down the speed of water flowing into the housing 1, two sides of the upper end of the baffle 28 are connected to risers 31, the risers 31 are used to prevent splashed water droplets from scattering, each riser 31 is provided with a through hole 30, the through hole 30 is used to discharge water at the upper end of the baffle 28, the upper end of the baffle 28 is connected to a plurality of reinforcing ribs 29, and the reinforcing ribs 29 are used to enhance the hardness of the baffle 28.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The efficient biological denitrification equipment for the river water body comprises a shell (1) and is characterized in that a fixing plate (2) is connected inside the shell (1), a first chamber (3) is formed between the fixing plate (2) and the shell (1), a backwashing air inlet pipe (4) is communicated with one side of the first chamber (3), a water inlet pipe (5) is communicated with the other side of the first chamber (3), a backwashing water inlet pipe (6) is communicated with the water inlet pipe (5), a plurality of spray heads (7) are connected onto the fixing plate (2), the inlet of each spray head (7) is communicated with the first chamber (3), a fixing net (8) is connected into the shell (1), the fixing net (8) is positioned above the fixing plate (2), and a second chamber (9) is arranged between the fixing net (8) and the fixing plate (2), an aeration pipe (10) is communicated with the second chamber (9), one end of the aeration pipe (10) positioned in the second chamber (9) is communicated with a dispersing mechanism, the upper end of the fixing net (8) is filled with spherical ceramsite fillers (13), two sides inside the shell (1) are connected with supporting frames (14), the upper end of each supporting frame (14) is connected with a blocking net (15), the blocking net (15) is positioned above the spherical ceramsite fillers (13), the shell (1) is communicated with a water outlet pipe (16), the water outlet pipe (16) is positioned above the blocking net (15), the water outlet pipe (16) is communicated with a backwashing water outlet pipe (17), the upper end of the shell (1) is connected with a power mechanism, the power mechanism is connected with a brush (24), and the bottom end of the brush (24) is contacted with the blocking net (15), the inside both sides of casing (1) all are connected with water buffer gear, brush (24) are located two between the water buffer gear.

2. The efficient biological denitrification equipment for the river water body according to claim 1, wherein the dispersion mechanism comprises a dispersion pipe (11), the dispersion pipe (11) is communicated with the aeration pipe (10), and a plurality of aeration openings (12) are formed in the dispersion pipe (11).

3. The high-efficiency biological denitrification equipment for the river water body according to claim 1, the power mechanism comprises a fixed frame (18), the fixed frame (18) is connected with the shell (1), a movable groove (19) is arranged on the fixed frame (18), one side of the fixed frame (18) is fixedly connected with a motor (20), the output end of the motor (20) is connected with a rotating shaft (21) in a driving way, one end of the rotating shaft (21) extends into the movable groove (19), one end of the rotating shaft (21) is connected with a threaded rod (22), one end of the threaded rod (22) is rotatably connected with the movable groove (19), the threaded rod (22) is in threaded connection with a moving block (23), the moving block (23) is matched with the movable groove (19), and the bottom end of the movable groove (19) is connected with the hairbrush (24).

4. The efficient biological denitrification equipment for the river water body according to claim 1, wherein the surface of the spherical ceramsite packing (13) and the space of the open inner cavity are provided with microbial films.

5. The efficient biological denitrification equipment for river water bodies according to claim 1, wherein both sides of the inside of the shell (1) are connected with fixed frames (25), the fixed frames (25) are positioned above the blocking net (15), the bottom end of each fixed frame (25) is connected with a shovel net (26), and one side of each shovel net (26) is in contact with the blocking net (15).

6. The efficient biological denitrification equipment for river water according to claim 1, wherein the water buffering mechanism comprises two fixed seats (27), each fixed seat (27) is connected with the housing (1), and a baffle (28) is connected between the two fixed seats (27).

7. The efficient biological denitrification equipment for the river water body according to claim 6, wherein the two sides of the upper end of the baffle (28) are connected with vertical plates (31), and each vertical plate (31) is provided with a through hole (30).

8. The high-efficiency biological denitrification equipment for the river water body according to claim 6, wherein the upper end of the baffle (28) is connected with a plurality of reinforcing ribs (29).