CN113428980A - Sequencing batch type integrated sewage treatment device and sequencing batch type sewage treatment method - Google Patents

Abstract

The invention discloses a sequencing batch integrated sewage treatment device and a sequencing batch sewage treatment method, wherein the sequencing batch integrated sewage treatment device is provided with a water inlet area, a biochemical reaction area and a clear water area, and the water inlet area is communicated with the biochemical reaction area through an opening; the sequencing batch integrated sewage treatment device comprises an air source, an aeration piece, a return pipe, a filter piece, a backwashing pump and a drainage pump; the air supply is connected with the aeration piece, the aeration piece sets up in biochemical reaction district, and the aeration piece is higher than the opening, filter the piece and set up in biochemical reaction district, and filter the piece and enclose and establish and be formed with the inside passage, the end and the inside passage intercommunication of drawing water of drain pump, the play water end and the clear water district intercommunication of drain pump, the end and the clear water district intercommunication of drawing water of backwash pump, the play water end and the inside passage intercommunication of backwash pump, the back flow is used for communicateing intake zone and biochemical reaction district, liquid in the biochemical reaction district can get into through the back flow under the effect of a power supply and intake in the district.

Description

Sequencing batch type integrated sewage treatment device and sequencing batch type sewage treatment method

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a sequencing batch integrated sewage treatment device and a sequencing batch sewage treatment method.

Background

At present, domestic sewage is mainly treated by adopting a biochemical treatment technology, and pollutants in the sewage are decomposed and removed by mainly utilizing the adsorption, absorption and decomposition effects of various microorganisms and zoogloea so as to achieve the aim of purifying the sewage. Nowadays, the sewage biological treatment technology is continuously perfected, but from the current application situation at home and abroad, the sewage treatment process is mainly based on an activated sludge method and a biofilm method.

The patent 'sequencing batch suspended filler biomembrane sewage treatment device' (patent application number: 201010246280.6) discloses a sequencing batch suspended filler biomembrane sewage treatment device, which has the advantages of both biomembrane method and activated sludge method, and comprises the following stages when treating sewage: a water inlet stage, an aerobic aeration stage, a sedimentation stage and a water drainage stage. However, the sequencing batch suspended filler biofilm sewage treatment device still has the problems of poor sewage treatment effect and low treatment efficiency.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a sequencing batch integrated sewage treatment device, which can solve the problems of poor sewage treatment effect and low treatment efficiency of the conventional sewage treatment device.

The invention also provides a sequencing batch sewage treatment method.

According to the sequencing batch integrated sewage treatment device disclosed by the embodiment of the first aspect of the invention, the sequencing batch integrated sewage treatment device is provided with a water inlet area, a biochemical reaction area and a clear water area, wherein the water inlet area is communicated with the biochemical reaction area through an opening;

the sequencing batch integrated sewage treatment device comprises an electric control system, an air source, an aeration piece, a return pipe, a filter piece, a backwashing pump and a drainage pump;

the air source is connected with the aeration part, the aeration part is arranged in the biochemical reaction area and is higher than the opening, the filter part is arranged in the biochemical reaction area, an internal channel is arranged in the filter part, the water pumping end of the drainage pump is communicated with the internal channel, the water outlet end of the drainage pump is communicated with the clear water area, the water pumping end of the backwashing pump is communicated with the clear water area, the water outlet end of the backwashing pump is communicated with the internal channel, the return pipe is used for communicating the water inlet area with the biochemical reaction area, and liquid in the biochemical reaction area can enter the water inlet area through the return pipe under the action of a power source;

the air source, the backwashing pump, the draining pump and the power source are all electrically connected with the electric control system.

The sequencing batch integrated sewage treatment device provided by the embodiment of the invention at least has the following technical effects:

the sequencing batch integrated sewage treatment device operates periodically, and in one period of operation of the sequencing batch integrated sewage treatment device, sewage is firstly pumped into the water inlet area, and the sewage enters the biochemical reaction area from the water inlet area through the opening until liquid in the biochemical reaction area reaches a first preset value. In the process of pumping sewage into the water inlet area, the gas source can be started so that gas containing oxygen enters the liquid in the biochemical reaction area through the aeration piece, and when the gas source is started, the liquid in the biochemical reaction area flows into the water inlet area through the return pipe under the action of a power source; when the air supply is opened, the aeration piece can be utilized for aeration, when the aeration is carried out, the liquid in the biochemical reaction area forms an aerobic environment, and the liquid in the water inlet area is an anaerobic environment, so that the sewage can be alternately treated by microorganisms under the aerobic environment and the anaerobic environment, and the biological denitrification effect is enhanced. Then, starting a backwashing pump to pump clean water in the clean water area to the filter element so as to backwash the filter element by using the clean water and ensure the filtering effect of the filter element; in the process of backwashing the filter element, clear water can enter the biochemical reaction area to stir biochemical reaction and original sewage in the biochemical reaction area, so that the sewage is fully mixed and contacted with microorganisms, and the purification effect is improved; after the backwash pump is turned on for a period of time, the backwash pump is turned off. After the gas source is opened for a period of time, the gas source is closed to allow the microbial flocs to settle under the action of gravity. And after the air source is closed for a period of time (the microbial floc precipitation is finished), the drainage pump is started to enable the clean water in the biochemical reaction area to be filtered by the filter element and then to be drained to the clean water area, and when the liquid in the biochemical reaction area falls to a second preset value, the drainage pump is stopped. Then standing for a period of time and waiting for the next processing period. The sequencing batch integrated sewage treatment device can improve the sewage treatment efficiency and treatment effect.

According to some embodiments of the present invention, the power source is the air source, one end of the return pipe is communicated with the biochemical reaction region, the other end of the return pipe is communicated with the water inlet region, the air source is communicated with one end of the return pipe close to the biochemical reaction region, and the air source is used for supplying air to the return pipe, so that a negative pressure is formed inside the return pipe.

According to some embodiments of the present invention, one end of the return pipe extends into the bottom of the biochemical reaction region, and the other end of the return pipe is located at the top of the water inlet region.

According to some embodiments of the present invention, the sequencing batch integrated sewage treatment device further comprises a tank, wherein a first partition plate is disposed inside the tank, the first partition plate divides an inner space of the tank into the water inlet area and the biochemical reaction area, the first partition plate is spaced from a bottom plate of the tank, and the opening is formed between the first partition plate and the bottom plate of the tank.

According to some embodiments of the present invention, a second partition board is further disposed inside the box, an internal space of the box is separated into a biochemical treatment region and a mounting region by the second partition board, the biochemical treatment region is separated into the water inlet region and the biochemical reaction region by the first partition board, the biochemical reaction region is located between the water inlet region and the mounting region, and the air source, the drain pump and the backwash pump are disposed in the mounting region.

According to some embodiments of the present invention, a flow guiding plate is disposed in the water inlet region and located at the bottom of the water inlet region, the flow guiding plate is disposed in an inclined manner and opposite to the opening, the flow guiding plate is configured to form a slope channel communicated with the biochemical reaction region, and a side of the flow guiding plate close to the biochemical reaction region is lower than a side of the flow guiding plate away from the biochemical reaction region.

According to some embodiments of the present invention, the filter member is spaced apart from the bottom wall of the biochemical reaction region, and a sediment accommodating space is formed between the filter member and the bottom wall of the biochemical reaction region.

According to some embodiments of the present invention, the sequencing batch integrated sewage treatment apparatus further includes a communication pipe, the filter member is plural, the internal passage of each filter member is communicated with the communication pipe, and the communication pipe is further communicated with the drain pump and the backwash pump.

According to some embodiments of the invention, a suspended packing is disposed within the biochemical reaction zone.

According to a second aspect of the present invention, there is provided a sequencing batch wastewater treatment process, comprising:

pumping sewage into a water inlet area so that the sewage enters a biochemical reaction area from the water inlet area through an opening until the liquid level of liquid in the biochemical reaction area reaches a first preset value;

starting an air source to enable the gas containing oxygen to enter the liquid in the biochemical reaction area through an aeration piece, and when the air source is started, the liquid in the biochemical reaction area flows into the water inlet area through a return pipe under the action of a power source;

starting a backwashing pump to pump clean water in the clean water area to the filter elements so as to carry out backwashing on the filter elements by using the clean water, wherein the clean water can also enter the biochemical reaction area in the process of carrying out backwashing on the filter elements;

closing the backwashing pump;

closing the gas source to allow microbial flocs to settle under the action of gravity;

and after the preset time period of closing the gas source, starting a drainage pump to enable the clean water in the biochemical reaction area to be filtered by the filter element and then to be drained to a clean water area until the liquid level of the liquid in the biochemical reaction area is reduced to a second preset value.

The sequencing batch sewage treatment method provided by the embodiment of the invention at least has the following technical effects:

in the sequencing batch sewage treatment method, the sewage is firstly pumped into the water inlet area, and the sewage enters the biochemical reaction area from the water inlet area through the opening until the liquid in the biochemical reaction area reaches the first preset value. In the process of pumping sewage into the water inlet area, the gas source can be started so that gas containing oxygen enters the liquid in the biochemical reaction area through the aeration piece, and when the gas source is started, the liquid in the biochemical reaction area flows into the water inlet area through the return pipe under the action of a power source; when the air supply is opened, the aeration piece can be utilized for aeration, when the aeration is carried out, the liquid in the biochemical reaction area forms an aerobic environment, and the liquid in the water inlet area is an anaerobic environment, so that the sewage can be alternately treated by microorganisms under the aerobic environment and the anaerobic environment, and the biological denitrification effect is enhanced. Then, starting a backwashing pump to pump clean water in the clean water area to the filter element so as to backwash the filter element by using the clean water and ensure the filtering effect of the filter element; in the process of backwashing the filter element, clear water can enter the biochemical reaction area to stir biochemical reaction and original sewage in the biochemical reaction area, so that the sewage is fully mixed and contacted with microorganisms, and the purification effect is improved; after the backwash pump is turned on for a period of time, the backwash pump is turned off. After the gas source is opened for a period of time, the gas source is closed to allow the microbial flocs to settle under the action of gravity. And after the air source is closed for a period of time (the microbial floc precipitation is finished), the drainage pump is started to enable the clean water in the biochemical reaction area to be filtered by the filter element and then to be drained to the clean water area, and when the liquid in the biochemical reaction area falls to a second preset value, the drainage pump is stopped. Then standing for a period of time and waiting for the next processing period. The sequencing batch integrated sewage treatment device can improve the sewage treatment efficiency and treatment effect.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of an integrated wastewater treatment plant of sequencing batch type according to an embodiment of the present invention;

FIG. 2 is a schematic view showing an internal structure of a sequencing batch integrated wastewater treatment apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of an internal structure of a sequencing batch integrated wastewater treatment apparatus according to an embodiment of the present invention;

fig. 4 is a third schematic view of the internal structure of the sequencing batch integrated wastewater treatment apparatus according to the embodiment of the present invention.

Reference numerals:

10. sequencing batch type integrated sewage treatment device; 100. a box body; 101. a water inlet area; 102. a biochemical reaction area; 103. an installation area; 104. an opening; 110. a top door; 120. a side door; 130. a first separator; 140. a second separator; 150. a baffle; 200. a gas source; 300. an aeration member; 400. a filter member; 410. a communicating pipe; 500. draining pump; 600. a backwash pump; 700. a return pipe; 800. a clear water tank; 801. a clear water zone; 900. an electronic control system.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, an embodiment of a sequencing batch integrated wastewater treatment device 10 is shown in fig. 2 and 4, the sequencing batch integrated wastewater treatment device 10 is provided with a water inlet region 101, a biochemical reaction region 102 and a clean water region 801, and the water inlet region 101 is communicated with the biochemical reaction region 102 through an opening 104.

As shown in fig. 2, in particular, the sequencing batch integrated sewage treatment device 10 includes a tank 100, a first partition 130 is disposed inside the tank 100, the first partition 130 partitions an inner space of the tank 100 into a water inlet region 101 and a biochemical reaction region 102, the first partition 130 is spaced from a bottom plate of the tank 100, an opening 104 is formed between the first partition 130 and the bottom plate of the tank 100, and the opening 104 is used for communicating a bottom of the water inlet region 101 with a bottom of the biochemical reaction region 102. When the wastewater is treated by the sequencing batch integrated wastewater treatment apparatus 10, the wastewater is first injected into the water inlet region 101 and then flows to the biochemical reaction region 102 through the opening 104. Wherein, the biochemical reaction area 102 is used for placing microorganisms which can purify sewage.

Further, the top of the box 100 is provided with a top door 110, water can be injected into the water inlet area 101 after the top door 110 is opened, and when sewage enters the water inlet area 101 through the top of the box 100, the sewage can be fully mixed by the water power generated by the water flow.

Further, the inlet of the integrated wastewater treatment system 10 is controlled by a water inlet pump (not shown) capable of pumping wastewater into the inlet region 101.

As shown in FIG. 2, in one embodiment, a flow guiding plate 150 is disposed in the water inlet region 101 at the bottom of the water inlet region 101, the flow guiding plate 150 is disposed obliquely and opposite to the opening 104, the flow guiding plate 150 is used to form a ramp channel communicated with the biochemical reaction region 102, and a side of the flow guiding plate 150 close to the biochemical reaction region 102 is lower than a side of the flow guiding plate 150 far from the biochemical reaction region 102. Therefore, the sewage entering the water inlet area 101 can flow into the biochemical reaction area 102 through the opening 104 along the guide plate 150, and the water flow speed is increased.

In one embodiment, the biochemical reaction area 102 is provided with a suspension packing, the suspension packing can form a moving biological bed, and microorganisms grow and breed by taking the suspension packing as a carrier, so that the biomass can be increased.

As shown in fig. 2 and 4, a second partition plate 140 is further disposed inside the box 100, an internal space of the box 100 is separated into a biochemical reaction region and an installation region 103 by the second partition plate 140, the biochemical reaction region is separated into a water inlet region 101 and a biochemical reaction region 102 by the first partition plate 130, the biochemical reaction region 102 is located between the water inlet region 101 and the installation region 103, a clean water tank 800 is disposed in the installation region 103, and an internal space of the clean water tank 800 is a clean water region 801.

Further, a side of the cabinet 100 is provided with a side door 120, and components in the installation region 103 can be replaced or repaired by opening the side door 120.

As shown in fig. 2, the sequencing batch integrated wastewater treatment device 10 further includes an air source 200, an aeration member 300, a return pipe 700, a backwash pump 600, a filter member 400, a drain pump 500, and an electronic control system 900.

The air source 200 is connected with the aeration member 300, the aeration member 300 is disposed in the biochemical reaction region 102, and the aeration member 300 is higher than the opening 104.

Specifically, the gas source 200 is disposed in the mounting region 103, the aeration member 300 is disposed in the biochemical reaction region 102, and the aeration member 300 is connected to the gas source 200 through a pipe. The air source 200 can inject oxygen-containing gas into the aeration member 300 through a pipeline during operation, and the aeration member 300 can inject the oxygen-containing gas into the liquid in the biochemical reaction region 102, so that the liquid in the biochemical reaction region 102 is in a state of high oxygen content, and thus, microorganisms in the biochemical reaction region 102 can perform aerobic treatment on the sewage. In addition, since the aeration member 300 is higher than the opening 104, oxygen does not enter the water inlet region 101 through the opening 104 during aeration of the aeration member 300, so as to ensure that the liquid in the water inlet region 101 is in an anoxic state.

Optionally, the air source 200 is an air pump or a silent blower; the aeration member 300 may be a membrane tube type aeration apparatus or an aeration disc; the oxygen-containing gas may be air.

The filter 400 is disposed in the biochemical reaction area 102, and the filter 400 has an internal passage, a water pumping end of the water discharge pump 500 is communicated with the internal passage of the filter 400, and a water discharging end of the water discharge pump 500 is communicated with the clean water area 801.

Specifically, the drain pump 500 is disposed in the installation area 103, the filter 400 is disposed in the biochemical reaction area 102, a water pumping end of the drain pump 500 is communicated with the internal passage of the filter 400 through a pipeline, and a water outlet end of the drain pump 500 is also communicated with the clean water area 801 through a pipeline. When the drainage pump 500 is activated, the water in the biochemical reaction region 102 can be firstly pumped into the internal passage of the filter member 400 (the water in the biochemical reaction region 102 is filtered by the filter member 400 when passing through the filter member 400), and then pumped into the clean water region 801. The drainage pump 500 can provide power for filtering water in the biochemical reaction region 102, and accelerate drainage efficiency.

More specifically, the filter 400 is spaced apart from the bottom wall of the biochemical reaction region 102, and a sediment accommodating space is formed between the filter 400 and the bottom wall of the biochemical reaction region 102. Thus, after the aeration is completed, the microbial floc in the biochemical reaction area 102 is deposited to the bottom of the biochemical reaction area 102 under the action of gravity, and by forming a deposit accommodating space between the bottom walls of the filter 400 and the biochemical reaction area 102, the deposit is deposited in the deposit accommodating space after the deposition is completed. In this way, when the drain pump 500 is started, only the supernatant fluid that has not passed through the filter 400 can be filtered by the filter 400 and then enter the clean water area 801, so that the filter 400 can be prevented from being clogged by the sediment.

Alternatively, the filter element 400 is a ceramic membrane filter device and the filter element 400 is a tubular structure.

As shown in fig. 3 and 4, the water pumping end of the backwash pump 600 communicates with the clean water zone 801, and the water outlet end of the backwash pump 600 communicates with the internal passage of the filter 400.

Specifically, the backwash pump 600 is disposed in the installation region 103, a water pumping end of the backwash pump 600 is in communication with the clean water region 801 through a pipe, and a water discharging end of the drain pump 500 is in communication with the internal passage of the filter 400 through a pipe. The backwash pump 600, when activated, is capable of pumping clear liquid in the clear water zone 801 into the internal passages of the filter 400 and backwashing the filter 400. Also, during backwashing of the filter 400, clean water is sprayed into the biochemical reaction region 102.

More specifically, the backwash pump 600 is turned on after the completion of water injection. Thus, when the backwash pump 600 is turned on, the water entering the biochemical reaction region 102 through the filter 400 can stir the original sewage in the biochemical reaction region 102, so that the sewage is fully mixed and contacted with the microorganisms.

In addition, in the present embodiment, the water inlet amount of each cycle of the sequencing batch integrated wastewater treatment device 10 is controlled by the liquid level of the liquid in the biochemical reaction zone 102. Specifically, a liquid level sensor is arranged in the water inlet area 101, and when the liquid level sensor detects that the liquid level of the liquid in the biochemical reaction area 102 reaches a first preset value, the water inlet pump is turned off, and the water injection into the water inlet area 101 is stopped. By setting the backwash procedure after the water inlet procedure during a cycle, the water inlet volume per cycle can be guaranteed. Specifically, in one cycle, when the liquid level of the liquid in the biochemical reaction area 102 reaches a first preset value under the action of the water inlet pump, the backwashing pump is started, so that the water inlet amount of each cycle is ensured.

As shown in fig. 2 and 4, the number of the filter members 400 is further plural, the internal passage of each filter member 400 is communicated with the communication pipe 410, and the communication pipe 410 is also communicated with the drain pump 500 and the backwash pump 600. The filtration efficiency can be improved by filtering the water in the biochemical reaction region 102 using the plurality of filter members 400.

As shown in fig. 4, the return pipe 700 is used to connect the water inlet area 101 and the biochemical reaction area 102, and the liquid in the biochemical reaction area 102 can enter the water inlet area 101 through the return pipe 700 under the action of a power source.

Specifically, the power source is an air source 200, one end of the return pipe 700 is communicated with the biochemical reaction region 102, the other end of the return pipe 700 is communicated with the water inlet region 101, the air source 200 is communicated with one end of the return pipe 700 close to the biochemical reaction region 102, and the air source 200 is used for supplying air to the return pipe 700, so that negative pressure is formed inside the return pipe 700. Thus, only the air source 200 is used, aeration and liquid backflow can be achieved, other power sources do not need to be added specially, and the device is simple in structure and low in cost.

More specifically, one end of the return pipe 700 extends into the bottom of the biochemical reaction region 102, the other end of the return pipe 700 is located at the top of the water inlet region 101, and the end of the gas source 200, which is close to the biochemical reaction region 102, of the return pipe 700 is communicated with the pipeline. When the air source 200 is turned on, the aeration member 300 can be used to aerate the water while supplying air to the return pipe 700, so that a negative pressure is formed inside the return pipe 700 to draw the liquid in the biochemical reaction region 102 into the water inlet region 101. During aeration, the liquid in the biochemical reaction zone 102 forms an aerobic environment, while the liquid in the water inlet zone 101 is an anaerobic environment. Therefore, the sewage can be alternately treated by microorganisms in an aerobic environment and an anaerobic environment, and the biological denitrification effect is enhanced.

As shown in fig. 1 to 4, the sequencing batch integrated wastewater treatment apparatus 10 operates periodically, and during one period of operation of the sequencing batch integrated wastewater treatment apparatus 10, wastewater is first pumped into the water inlet region 101, and the wastewater enters the biochemical reaction region 102 from the water inlet region 101 through the opening 104 until the liquid in the biochemical reaction region 102 reaches the first predetermined value. During the process of pumping the sewage into the water inlet region 101, the gas source 200 may be activated, so that the gas containing oxygen enters the liquid in the biochemical reaction region 102 through the aeration member 300, and when the gas source 200 is activated, the liquid in the biochemical reaction region 102 flows into the water inlet region 101 through the return pipe 700 under the action of a power source (in this embodiment, the gas source 200); when the air source 200 is opened, the aeration member 300 can be utilized for aeration, during aeration, the liquid in the biochemical reaction zone 102 forms an aerobic environment, and the liquid in the water inlet zone 101 is an anaerobic environment, so that sewage can be alternately treated by microorganisms in the aerobic environment and the anaerobic environment, and the biological denitrification effect is enhanced. Then, the backwashing pump 600 is started to pump the clean water in the clean water area 801 to the filter 400, so that the filter 400 is backwashed by the clean water, and the filtering effect of the filter 400 is ensured; in the process of backwashing the filter element 400, clear water can enter the biochemical reaction area 102 to stir biochemical reaction and original sewage in the biochemical reaction area, so that the sewage is fully mixed and contacted with microorganisms, and the purification effect is improved; after the backwash pump 600 is turned on for a period of time, the backwash pump 600 is turned off. After the gas source 200 is opened for a period of time, the gas source 200 is closed to allow the microbial flocs to settle by gravity. After the air source 200 is closed for a period of time (the sedimentation of the microbial flocs is completed), the drainage pump 500 is turned on to drain the clean water in the biochemical reaction area 102 to the clean water area 801 after being filtered by the filter 400, and when the liquid in the biochemical reaction area 102 drops to the second preset value, the drainage pump 500 is stopped. Then standing for a period of time and waiting for the next processing period. The sequencing batch integrated sewage treatment device 10 can improve the sewage treatment efficiency and treatment effect.

It should be noted that the water inlet pump, the air source 200, the backwashing pump 600 and the water discharge pump 500 are all controlled by the electronic control system 900, and the electronic control system 900 can control the start and stop of the water inlet pump, the air source 200, the backwashing pump 600 and the water discharge pump 500.

As shown in fig. 1 to 4, an embodiment of the present invention further relates to a sequencing batch sewage treatment method, which is applied to the sequencing batch integrated sewage treatment apparatus 10.

The sequencing batch sewage treatment method comprises the following steps:

s100, pumping the sewage into the water inlet area 101, so that the sewage enters the biochemical reaction area 102 from the water inlet area 101 through the opening 104 until the liquid in the biochemical reaction area 102 reaches a first preset value.

Specifically, the sequencing batch integrated wastewater treatment apparatus 10 operates in cycles, and in each cycle, starting with the start of the water inlet pump, the water inlet pump can pump wastewater into the water inlet region 101 when being started, and make the wastewater in the water inlet region 101 enter the biochemical reaction region 102 from the water inlet region 101 through the opening 104, and when the liquid in the biochemical reaction region 102 reaches a first preset value (for example, 0.3m from the top of the apparatus), the water inlet pump is turned off.

In addition, the stop of the water inlet pump is controlled by time, and the water inlet pump is also closed when the starting time of the water inlet pump reaches a first preset time period. Generally, after the water inlet pump is turned on, the liquid in the biochemical reaction region 102 reaches a first predetermined value within a first predetermined time period.

S200, starting the gas source 200 to make the gas containing oxygen enter the liquid in the biochemical reaction area 102 through the aeration member 300, and when the gas source 200 is started, the liquid in the biochemical reaction area 102 flows into the water inlet area 101 through the return pipe 700 under the action of a power source.

Specifically, in each period, the gas source 200 is started at the same time when the water inlet pump is started, or at a certain time after the water inlet pump is started, when the gas source 200 is started, the gas containing oxygen can enter the liquid in the biochemical reaction region 102 through the aeration member 300, and when the gas source 200 is started, the liquid in the biochemical reaction region 102 flows into the water inlet region 101 through the return pipe 700 under the action of the power source.

More specifically, the power source is the air source 200, and when the air source 200 is turned on, the air can be supplied to the return pipe 700 while being aerated by the aeration member 300, so that a negative pressure is formed inside the return pipe 700 to draw the liquid in the biochemical reaction region 102 into the water inlet region 101. During aeration, the liquid in the biochemical reaction zone 102 forms an aerobic environment, while the liquid in the water inlet zone 101 is an anaerobic environment. Therefore, the sewage can be alternately treated by microorganisms in an aerobic environment and an anaerobic environment, and the biological denitrification effect is enhanced.

S300, after the liquid in the biochemical reaction area 102 reaches a first preset value, a backwashing pump is started to pump the clean water in the clean water area 801 to the filter element 400, so that the filter element 400 is backwashed by the clean water, and the clean water can enter the biochemical reaction area 102 in the process of backwashing the filter element 400.

Specifically, in each cycle, starting with the start of the water inlet pump, the backwash pump 600 is turned on after the water inlet pump is turned on and after a second preset time period (e.g., 1 hour) has elapsed, wherein the liquid level of the liquid in the biochemical reaction region 102 has already reached the first preset value at the start of the backwash pump 600. When the backwash pump 600 is turned on, the clean water in the clean water tank 800 may be pumped toward the filter 400 to backwash the filter 400, and during the backwash of the filter 400, the clean water may also enter the biochemical reaction region 102. And, by placing the backwash procedure after the water inlet procedure, the water inlet amount per cycle can be secured.

And S400, closing the backwashing pump.

Specifically, in each cycle, the backwash pump is turned off when the level of liquid in the clean water zone drops to a low level (e.g., 0.1m from the bottom of the clean water tank), or after the backwash pump is turned on for a third preset period of time (e.g., 15 minutes).

S500, closing the gas source 200 to enable the microbial flocs to be precipitated under the action of gravity.

Specifically, the gas source 200 is turned off after a fourth predetermined period of time (e.g., 5.5 hours) has been turned on, at which time microbial floes are able to settle under the influence of gravity.

S500, after the air source 200 is closed, the drain pump 500 is started, so that the clean water in the biochemical reaction area 102 is filtered by the filter 400 and then is discharged to the clean water area 801.

Specifically, after a fifth preset time period (e.g., 75 minutes) after the gas source 200 is turned off, the microbial flocs are settled, and then the drainage pump 500 is turned on, so that the clean water in the biochemical reaction area 102 is filtered by the filter 400 and drained to the clean water area 801, and when the liquid level of the liquid in the biochemical reaction area 102 drops to a second preset value (e.g., 0.5m from the top of the device), the drainage pump 500 is stopped; then standing for a period of time and waiting for the next processing period.

The steps S100 to S500 are included in one treatment cycle of the sequencing batch integrated wastewater treatment apparatus.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A sequencing batch integrated sewage treatment device is characterized in that the sequencing batch integrated sewage treatment device is provided with a water inlet area, a biochemical reaction area and a clear water area, wherein the water inlet area is communicated with the biochemical reaction area through an opening;

the sequencing batch integrated sewage treatment device comprises an electric control system, an air source, an aeration piece, a return pipe, a filter piece, a backwashing pump and a drainage pump;

the air source is connected with the aeration part, the aeration part is arranged in the biochemical reaction area and is higher than the opening, the filter part is arranged in the biochemical reaction area, an internal channel is arranged in the filter part, the water pumping end of the drainage pump is communicated with the internal channel, the water outlet end of the drainage pump is communicated with the clear water area, the water pumping end of the backwashing pump is communicated with the clear water area, the water outlet end of the backwashing pump is communicated with the internal channel, the return pipe is used for communicating the water inlet area with the biochemical reaction area, and liquid in the biochemical reaction area can enter the water inlet area through the return pipe under the action of a power source;

the air source, the backwashing pump, the draining pump and the power source are all electrically connected with the electric control system.

2. The sequencing batch integrated wastewater treatment device of claim 1, wherein the power source is the air source, one end of the return pipe is communicated with the biochemical reaction region, the other end of the return pipe is communicated with the water inlet region, the air source is communicated with one end of the return pipe close to the biochemical reaction region, and the air source is used for supplying air to the return pipe so as to form negative pressure inside the return pipe.

3. The sequencing batch integrated wastewater treatment apparatus according to claim 2, wherein one end of the return pipe extends into the bottom of the biochemical reaction zone, and the other end of the return pipe is located at the top of the water inlet zone.

4. The sequencing batch integrated wastewater treatment device according to claim 1, further comprising a tank, wherein a first partition is disposed inside the tank, the first partition divides an inner space of the tank into the water inlet region and the biochemical reaction region, the first partition is spaced apart from a bottom plate of the tank, and the opening is formed between the first partition and the bottom plate of the tank.

5. The sequencing batch integrated wastewater treatment apparatus according to claim 4, wherein a second partition plate is further disposed inside the tank, an internal space of the tank is partitioned into a biochemical treatment region and a mounting region by the second partition plate, the biochemical treatment region is partitioned into the water inlet region and the biochemical reaction region by the first partition plate, the biochemical reaction region is located between the water inlet region and the mounting region, and the gas source, the drain pump and the backwash pump are disposed in the mounting region.

6. The sequencing batch integrated wastewater treatment device according to claim 1, wherein a flow guide plate is disposed in the water inlet region at the bottom of the water inlet region, the flow guide plate is disposed obliquely and opposite to the opening, the flow guide plate is used to form a slope channel communicated with the biochemical reaction region, and one side of the flow guide plate close to the biochemical reaction region is lower than one side of the flow guide plate far away from the biochemical reaction region.

7. The sequencing batch integrated wastewater treatment apparatus according to claim 1, wherein the filter member is spaced apart from the bottom wall of the biochemical reaction zone, and a sediment-containing space is formed between the filter member and the bottom wall of the biochemical reaction zone.

8. The sequencing batch integrated wastewater treatment unit according to claim 1, further comprising a plurality of communication pipes, wherein the internal channel of each of the filter members is in communication with the communication pipes, and the communication pipes are in communication with the drain pump and the backwash pump.

9. The sequencing batch integrated wastewater treatment plant according to claim 1, wherein a suspended filler is disposed in the biochemical reaction zone.

10. A sequencing batch sewage treatment method is characterized by comprising the following steps:

pumping sewage into a water inlet area so that the sewage enters a biochemical reaction area from the water inlet area through an opening until the liquid level of liquid in the biochemical reaction area reaches a first preset value;

starting an air source to enable the gas containing oxygen to enter the liquid in the biochemical reaction area through an aeration piece, and when the air source is started, the liquid in the biochemical reaction area flows into the water inlet area through a return pipe under the action of a power source;

after the liquid level of the liquid in the biochemical reaction area reaches a first preset value, starting a backwashing pump to pump clean water in a clean water area to a filter element so as to backwash the filter element by using the clean water, wherein the clean water can also enter the biochemical reaction area in the process of backwashing the filter element by using the clean water;

closing the backwashing pump;

closing the gas source to allow microbial flocs to settle under the action of gravity;

and after the preset time period of closing the gas source, starting a drainage pump to enable the clean water in the biochemical reaction area to be filtered by the filter element and then to be drained to a clean water area until the liquid level of the liquid in the biochemical reaction area is reduced to a second preset value.

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