CN112194252A

CN112194252A - Domestic sewage treatment equipment capable of easily identifying whether microporous aeration disc is damaged or not

Info

Publication number: CN112194252A
Application number: CN202011109441.7A
Authority: CN
Inventors: 刘东斌; 刘翔; 王芙蓉; 缪兵权; 邹宇林; 祁海燕; 陈莎; 赵勤
Original assignee: China Railway Environmental and Technology Engineering Co Ltd
Current assignee: China Railway Environmental and Technology Engineering Co Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-01-08

Abstract

The invention provides a domestic sewage treatment device capable of easily identifying whether a microporous aeration disc is damaged, which comprises an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, a sand filter and a clean water tank, wherein an aeration device is arranged at the aerobic tank, the aeration device comprises an aeration pipe network, an aeration pipe network air inlet, a plurality of microporous aeration discs which are distributed on the aeration pipe network at intervals, an external branch pipe, a transparent observer and a liquid discharge switch, the inner end of the external branch pipe is communicated with a pipeline of the aeration pipe network, the outer end of the external branch pipe extends out of the wall of the aerobic tank, the transparent observer is connected with the outer end of the external branch pipe, and the liquid discharge switch is arranged at the downstream or below of the transparent observer and is used for discharging sewage entering the external branch pipe and the transparent observer. The device and the device can easily judge whether the aeration disc in the aerobic tank works normally, and can simply and accurately detect the local damage of the single microporous aeration disc.

Description

Domestic sewage treatment equipment capable of easily identifying whether microporous aeration disc is damaged or not

Technical Field

The invention belongs to the field of wastewater treatment, and particularly relates to domestic sewage treatment equipment capable of easily identifying whether a microporous aeration disc is damaged.

Background

All can set up good oxygen pond among the integration sewage treatment device that adopts biological method nitrogen and phosphorus removal, and most good oxygen pond is all carried out the aeration through micropore aeration dish, and whether the growth of good oxygen fungus is influenced in the normal work of micropore aeration dish, influences whether discharge to reach standard of quality of water, and micropore aeration dish belongs to the core accessory of integration sewage treatment device.

The microporous aeration discs are generally distributed and uniformly distributed on a plurality of horizontally arranged aeration pipe networks. The microporous aeration disc is a typical micro-bubble air diffusion device, the diffusion disc is mainly made of microporous materials such as ceramics, titanium powder, alumina, silicon oxide, nylon and the like, the diameter of generated bubbles is below 2mm, the oxygen utilization rate is high, the microporous aeration disc is often installed in an assembly form, and the microporous aeration disc is widely applied to a biochemical oxidation tank and an air flotation tank in a wastewater treatment process. Its disadvantages are easy to block, air must be filtered and purified, and diffusion resistance is large.

In the prior art, the aeration condition in the aerobic tank is generally observed by eyes to judge whether the aeration disc works normally. However, if the aerobic tank of the sewage treatment plant has a higher sludge concentration and thus a darker sewage color, damage to the microporous aeration disc or discs is difficult to detect. In addition, even in an aerobic tank with low color of sewage, if a single microporous aeration disc is locally damaged, the damage is difficult to be observed.

Therefore, there is a need in the art for a wastewater treatment apparatus that can easily identify whether a micro-porous aeration disk is damaged and a method of detecting whether a micro-porous aeration disk in an aerobic tank is damaged.

The invention patent CN201610391166.X relates to a real-time monitoring system for resistance characteristics of an aerator of a sewage treatment plant and a blockage early warning method, wherein the real-time monitoring system for the resistance characteristics of the aerator of the sewage treatment plant comprises a measurement control device, an input/output module, a system controller and a man-machine interaction interface, the measurement control device comprises a main pipe gas pressure gauge arranged on an aeration main pipe of the sewage treatment plant, a branch pipe gas flow equal ratio regulating valve, a branch pipe gas flow meter and/or a branch pipe gas pressure gauge arranged on an aeration branch pipe of the sewage treatment plant, and a water inlet liquid flow meter arranged on a front pipeline of a water inlet of an aeration tank and/or an aeration zone liquid level meter arranged on the aeration tank; the input and output module is connected with each measurement control device through a cable, the system controller is directly connected with the blower and the input and output module, and the human-computer interaction interface is connected with the system controller.

The invention patent application cn201910914844.x relates to a cleaning robot for an aerator in a sewage tank and a state monitoring method. The aerator state detection system comprises a pressure sensor, an inertial navigation system and an elastic aerator position detection system. The pressure sensor is used for detecting the pressure state of the aerator during working and indirectly detecting the blockage and fracture states of the aerator; the inertial navigation system is used for detecting the posture and the position of the cleaning robot and recording the position of the fault aerator, so that the fault aerator is convenient to clean, maintain and replace; the elastic aerator position detection system is used for accurately detecting the position of the circular aerator. The invention also provides an evaluation method of the state of the aerator and a method for accurately positioning the position of the fault aerator. The invention ensures the real-time monitoring of the state of the aerator in the operating state and provides a solution for ensuring the safe and effective operation of sewage treatment.

The utility model patent CN201320862160.8 relates to an aeration systems blocks up detection device, including sealed inside casing that is provided with the cavity all around, install in the coupling I and the coupling II of the casing left and right sides, coupling I and II outer ends of coupling are provided with external screw thread I respectively and II insides of external screw thread are provided with through-hole I and through-hole II respectively, through-hole I and through-hole II communicate with the cavity respectively. When the gas pipeline is unobstructed, the gas pressure jacks up the moving contact communicated iron sheet, and with the help of the thrust of gas, the iron sheet is straightened upwards, so that the moving contact is attached to the static contact, a circuit is formed in a loop, and a circuit signal is generated between the lead I and the lead II. On the contrary, when the trachea of aerator takes place to block up, the pipeline is a closed environment, and pipeline inside gas pressure is balanced, and at this moment, the moving contact pushes down the relative bracing piece downward bending of moving iron sheet under self action of gravity to keep away from the static contact, thereby lead wire I and lead wire II between be disconnected, during the detection, exactly be a disconnection signal.

The invention patent 201510544343.9 discloses an anti-blocking method for an aeration system, wherein the aeration system is provided with an aerator and an air supply pipeline connected with the aerator, when equipment is overhauled, backwash liquid is introduced into the aerator under the condition of not cutting off air supply, and the pressure of the backwash liquid is utilized to offset the water pressure of the environment outside the aerator, so that sewage is prevented from flowing backwards and blocking the aerator and an aeration branch pipe. The invention also discloses a non-clogging aeration system, wherein an air supply pipeline with a pressure air source and a backflushing pipeline with a pressure water source are connected to the aerator, an air-water separation device is arranged on the air supply pipeline, backflushing liquid is injected into the aerator under the condition of not cutting off air supply when the aeration system fails or equipment is overhauled, the pressure of the backflushing liquid is greater than the ambient water pressure outside the aerator, the sewage is prevented from flowing backwards to block the aeration system, the air-water separation device blocks the air inlet pipeline, the backflushing liquid is intercepted, and the equipment such as a blower and the like is prevented from being damaged by inlet. The invention has simple structure, low energy consumption, convenient management and maintenance and wide application in aeration systems in the field of water supply and drainage treatment.

The device or the method provides a blockage detection or early warning method for the aeration disc to a certain extent, but the device or the method needs to rely on detection of other high-precision equipment, the equipment is relatively complicated, and blockage or damage conditions of some micropores on the aeration disc cannot be detected. Therefore, there is a need in the art for a simple and accurate device for easily identifying whether a micro-porous aeration disc is damaged and a simple and accurate method for detecting whether a micro-porous aeration disc is damaged in an aerobic tank of an integrated domestic sewage treatment apparatus.

Disclosure of Invention

Therefore, the invention provides a domestic sewage treatment device capable of easily identifying whether a microporous aeration disc is damaged, which sequentially comprises an anaerobic pool, an anoxic pool, an aerobic pool, a sedimentation pool, a sand filter pool and a clean water pool in the flow direction of wastewater, wherein an aeration device is arranged at the aerobic pool, the aeration device comprises an aeration pipe network horizontally arranged in the aerobic pool, an aeration pipe network air inlet arranged on the aeration pipe network, and a plurality of microporous aeration discs arranged on the aeration pipe network at intervals, the aeration device further comprises an external branch pipe, a transparent observer and a liquid discharge switch, the inner end of the external branch pipe is communicated with a pipeline of the aeration pipe network, the outer end of the external branch pipe extends out of the wall of the aerobic pool, the transparent observer is connected with the outer end of the external branch pipe, so that the transparent observer is also arranged outside the wall of the aerobic pool, and the liquid discharge switch is arranged at the downstream or below of the transparent observer and is used for discharging water to enter the external branch pipe and the transparent observer and the sewage of the observer.

In a particular embodiment, the height of the inner end (61) of the circumscribing branch (6) is set higher than the height of the outer end (62). Therefore, the sewage accumulated in the aeration pipe network 3 can be conveniently drained.

In a specific embodiment, the external branch pipe (6) is integrally and horizontally arranged, and the height of the pipe bottom of the external branch pipe is flush with that of the pipe bottom of the aeration pipe network (3).

In a particular embodiment, the transparent sight (7) is a transparent perspex tube and the drainage switch (8) is a ball valve arranged downstream of the transparent sight (7).

In a particular embodiment, the transparent plexiglas tube has an upstream end that is higher than a downstream end thereof, and is thus disposed at an angle.

In a specific embodiment, the whole level of external branch pipe (6) sets up, the whole level of transparent organic glass pipe sets up, and organic glass pipe and external branch pipe (6) coaxial setting, and the pipe diameter of organic glass pipe is greater than the pipe diameter of external branch pipe (6), therefore the position of the interior bottom surface of organic glass pipe sets up to be less than the position of the interior bottom surface of external branch pipe (6).

In a specific embodiment, the transparent observer (7) is a transparent plexiglass container, the transparent plexiglass container is a closed container having a liquid inlet and a liquid outlet, and the liquid discharge switch (8) is a valve disposed below the transparent plexiglass container.

In the invention, the liquid discharge switch 8 can ensure that the sewage in the aeration pipe network 3 and the external branch pipe 6 can be discharged completely, and because the amount of the sewage entering the aeration pipe network 3 and the external branch pipe 6 is not large, the sewage can be discharged from the liquid discharge switch to an open container below the transparent observer for storage, and then the sewage stored in the open container is poured into a regulating reservoir in front of the integrated domestic sewage treatment equipment for purification treatment. Preferably, the drainage switch (8) is connected with a delivery pipe and a pump for sending the sewage back to the regulating tank in front of the integrated domestic sewage treatment equipment.

In a specific embodiment, the aeration device also comprises a conveying pipe and a pump which are used for conveying the sewage discharged from the liquid discharge switch (8) back to a regulating reservoir in front of the integrated domestic sewage treatment equipment.

In a specific embodiment, the outer end (62) of the external branch pipe (6), the transparent observer (7) and the liquid discharge switch (8) are arranged outside the integrated domestic sewage treatment equipment box body (1).

In a specific embodiment, the domestic sewage treatment plant further comprises a plant room (96) disposed beside the sand filter (95) and the clean water tank (94).

The invention has at least the following beneficial effects: the device and the device can easily judge whether the aeration disc in the aerobic tank works normally or not no matter the sludge concentration in the aerobic tank and the color depth of the sewage, and a certain amount of accumulated sewage can be seen from a transparent observer even if a single microporous aeration disc is locally damaged, so that whether the microporous aeration disc in the aerobic tank is damaged or not can be simply and accurately detected.

Drawings

FIG. 1 is a schematic view of an integrated domestic sewage treatment apparatus according to the present invention.

In the figure: 1. an integrated domestic sewage treatment equipment box body; 2. an aerobic tank; 3. an aeration pipe network; 4. an air inlet of an aeration pipe network; 5. a microporous aeration disc; 6. a branch pipe is externally connected; 61. an inner end; 62. an outer end; 7. a transparent observer; 8. a liquid drainage switch; 91. an anaerobic tank; 92. an anoxic tank; 93. a sedimentation tank; 94. a clean water tank; 95. a sand filter; 96. and (4) equipment room.

Detailed Description

As shown in fig. 1, there is provided an integrated domestic sewage treatment apparatus. The integrated domestic sewage treatment equipment sequentially comprises an anaerobic tank (91), an anoxic tank (92), an aerobic tank (2), a sedimentation tank (93), a sand filter (95) and a clean water tank (94) in the flow direction of wastewater, wherein an aeration device is arranged at the position of the aerobic tank (2), the aeration device comprises an aeration pipe network (3) horizontally arranged in the aerobic tank (2), an aeration pipe network air inlet (4) arranged on the aeration pipe network (3) and a plurality of microporous aeration discs (5) arranged on the aeration pipe network (3) at intervals, the aeration device further comprises an external branch pipe (6), a transparent observer (7) and a liquid drainage switch (8), the inner end (61) of the external branch pipe (6) is communicated with the pipeline of the aeration pipe network (3), and the outer end (62) of the external branch pipe (6) extends out of the tank wall of the aerobic tank (2), the transparent observer (7) is connected with the outer end (62) of the external branch pipe (6), so that the transparent observer (7) is also arranged outside the wall of the aerobic tank (2), and the liquid drainage switch (8) is arranged at the downstream or below of the transparent observer (7) and is used for draining sewage entering the external branch pipe (6) and the transparent observer (7).

In the invention, the anaerobic tank (91), the anoxic tank (92) and the aerobic tank (2) are all provided with sludge or strains for biologically decomposing elements such as nitrogen and phosphorus in wastewater. And fine sand is arranged in the sand filter for cleaning wastewater. The waste water in the clean water tank generally reaches the discharge standard and can be directly discharged. The equipment room comprises equipment for controlling various mechanical equipment such as a stirring device, and further comprises a pipeline, a pump and other facilities for adding medicaments to each treatment pool.

The inventor of the invention finds that the intact microporous aeration disc can effectively prevent sewage in the aerobic tank from flowing backwards after the air supply is stopped, so that the sewage is prevented from downwards entering an aeration pipe network from the microporous aeration disc, and the sludge can be effectively prevented from blocking air holes; however, if the microporous aeration disc is damaged or part of micropores are damaged, for example, the aeration film of the microporous aeration disc is torn due to frequent expansion and contraction of the microporous aeration disc, after the aeration film is damaged, the non-return function of the aeration disc is invalid, and the sludge-water mixed liquid is easily poured into the pipe network of the aeration pipe. Therefore, the invention detects the effusion condition in the aeration pipe network by simple devices and methods to indirectly judge whether the micropore aeration disc or part of micropores on the micropore aeration disc are damaged.

The invention also provides a method for detecting whether the microporous aeration disc or the aeration pipe network is damaged, in the method, when the integrated domestic sewage treatment equipment is in normal operation, the liquid discharge switch (8) is kept closed, if accumulated water is found in the transparent observer (7), the microporous aeration disc (5) or the aeration pipe network (3) is damaged by water seepage; under the condition, the liquid discharge switch (8) needs to be kept closed continuously to avoid direct discharge of sewage, water inlet of the integrated domestic sewage treatment equipment is stopped, the liquid discharge switch (8) is opened after the existing sewage in the integrated domestic sewage treatment equipment is treated, the sewage is discharged, and then the microporous aeration disc (5) and/or the aeration pipe network (3) are overhauled.

In the present invention, the connection position of the external branch pipe 6 and the aeration pipe network 3 may be far from the aeration pipe network air inlet 4 or close to the aeration pipe network air inlet 4, which is not limited in the present invention.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions and substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. A domestic sewage treatment device capable of easily identifying whether a microporous aeration disc is damaged or not sequentially comprises an anaerobic pool (91), an anoxic pool (92), an aerobic pool (2), a sedimentation pool (93), a sand filter pool (95) and a clean water pool (94) in the wastewater flowing direction, wherein an aeration device is arranged at the aerobic pool (2) and comprises an aeration pipe network (3) horizontally arranged in the aerobic pool (2), an aeration pipe network air inlet (4) arranged on the aeration pipe network (3) and a plurality of microporous aeration discs (5) arranged on the aeration pipe network (3) at intervals, the aeration device further comprises an external branch pipe (6), a transparent observer (7) and a liquid discharge switch (8), the inner end (61) of the external branch pipe (6) is communicated with a pipeline of the aeration pipe network (3), and the outer end (62) of the external branch pipe (6) extends out of the pool wall of the aerobic pool (2), the transparent observer (7) is connected with the outer end (62) of the external branch pipe (6), so that the transparent observer (7) is also arranged outside the wall of the aerobic tank (2), and the liquid drainage switch (8) is arranged at the downstream or below of the transparent observer (7) and is used for draining sewage entering the external branch pipe (6) and the transparent observer (7).

2. The domestic sewage treatment apparatus according to claim 1, wherein the height of the inner end (61) of the circumscribed branch pipe (6) is set higher than the height of the outer end (62).

3. The domestic sewage treatment equipment according to claim 1, wherein the external branch pipe (6) is horizontally arranged as a whole and the height of the bottom of the external branch pipe is equal to the height of the bottom of the aeration pipe network (3).

4. The domestic sewage treatment apparatus according to claim 1, wherein said transparent sight glass (7) is a transparent perspex tube, and said drainage switch (8) is a ball valve disposed downstream of the transparent sight glass (7).

5. The domestic sewage treatment apparatus of claim 4 wherein the transparent plexiglas tube is disposed at an angle such that the height of the upstream end of the transparent plexiglas tube is greater than the height of the downstream end of the transparent plexiglas tube.

6. The domestic sewage treatment equipment according to claim 4, wherein the external branch pipe (6) is horizontally arranged as a whole, the transparent organic glass pipe is horizontally arranged as a whole, the organic glass pipe is coaxially arranged with the external branch pipe (6), and the pipe diameter of the organic glass pipe is larger than that of the external branch pipe (6), so that the position of the inner bottom surface of the organic glass pipe is set to be lower than that of the inner bottom surface of the external branch pipe (6).

7. The domestic sewage treatment apparatus according to claim 1, wherein the transparent observer (7) is a transparent plexiglas container, the transparent plexiglas container is a closed container having a liquid inlet and a liquid outlet, and the liquid discharge switch (8) is a valve disposed under the transparent plexiglas container.

8. The domestic sewage treatment apparatus according to claim 1, wherein said aeration means further comprises a pipe and a pump for returning the sewage discharged at the liquid discharge switch (8) to the conditioning tank in front of the integrated domestic sewage treatment apparatus.

9. The domestic sewage treatment equipment according to any one of claims 1 to 8, wherein the outer end (62) of the external branch pipe (6), the transparent observer (7) and the liquid discharge switch (8) are all arranged outside the integrated domestic sewage treatment equipment box body (1).

10. The domestic sewage treatment apparatus according to any one of claims 1 to 9, further comprising an equipment room (96) disposed beside the sand filter (95) and the clean water tank (94).