CN111204868A - Sequencing batch type continuous discharge sewage treatment device and application method thereof - Google Patents
Sequencing batch type continuous discharge sewage treatment device and application method thereof Download PDFInfo
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- CN111204868A CN111204868A CN202010166281.3A CN202010166281A CN111204868A CN 111204868 A CN111204868 A CN 111204868A CN 202010166281 A CN202010166281 A CN 202010166281A CN 111204868 A CN111204868 A CN 111204868A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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Abstract
The invention discloses a sequencing batch continuous discharge sewage processor and an application method thereof, wherein the sequencing batch continuous discharge sewage processor comprises the following steps: the barrel body comprises an outer barrel and an inner barrel which are arranged concentrically in a double-layer manner; rope-shaped biological filler for treating sewage; the first baffle plate and the second baffle plate are arranged on the outer side wall of the bottom of the inner cylinder and are distributed up and down; a water inlet pipe is arranged at the top end of the inner cylinder, and a water drain pipe is arranged above the side wall of the outer cylinder; an air inlet pipe communicated with an aeration pipe at the bottom of the inner barrel is arranged in the outer barrel; the inner cylinder is provided with a plurality of rows of overflow holes or overflow grooves at the position matched with the three-phase separation area. The invention provides a sequencing batch continuous discharge sewage processor and an application method thereof.A double-layer separation barrel body is combined with a three-phase separator, so that one barrel can be subjected to sedimentation and drainage operation continuously, compared with the conventional sequencing batch process, the processing time is shortened by 70%, the efficiency is improved by 50%, and the possibility of equipment miniaturization is provided.
Description
Technical Field
The invention relates to a device used in the sewage treatment situation. More particularly, the present invention relates to a sequencing batch type continuous discharge sewage treatment device for use in a small flow sewage condition and a method of use.
Background
Sequencing Batch Reactor (Sequencing Batch Reactor, abbreviated as SBR) Process.
SBR activated sludge process equipment is firstly provided at the end of the 70 th 20 th century taught by R.L.Irvine of the United states Noluodan university, and the process has the characteristics of low investment, impact load resistance, difficult sludge expansion and capability of effectively removing N, P. However, the SBR process and equipment are not widely used after the invention is discovered, because the SBR process and equipment have the following problems:
(1) can not continuously treat sewage
SBR "sequencing batch activated sludge process" is: in the same reaction tank (reactor), the following steps are respectively realized according to the time sequence: the activated sludge sewage treatment method consisting of five basic procedures of water inlet, standby, aeration, sedimentation and water discharge can not continuously treat sewage, a timing electric apparatus is used to realize 'sequencing batch', the sequencing batch time preset by the timing electric apparatus is difficult to adapt to the change of sewage amount due to different sewage discharge amounts in different time periods every day, the manual operation is too complicated to stably achieve the treatment effect, namely the 'sequencing batch' which automatically changes according to the 'sewage change' is not easy to realize before PIC programming is widely applied.
(2) Small size and poor post-treatment effect
The SBR process only has one reaction tank, and after equipment is miniaturized, the precipitation depth is insufficient, and the solid-liquid separation effect is difficult to ensure; if the precipitation time is increased, the treatment efficiency is greatly reduced, the daily treatment capacity is seriously reduced, and the efficiency is low.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
Still another object of the present invention is to provide a sequencing batch continuous sewage treatment apparatus, wherein a double-layered separation barrel is combined with a three-phase separator, so that a single barrel can be continuously subjected to sedimentation and drainage operations, the treatment time is shortened by 70% compared with the prior sequencing batch process, the efficiency is improved by 50%, the miniaturization of the apparatus is possible, further, all the steps of sewage treatment can be realized by the single barrel through the arrangement of the internal structure of the apparatus, the volume is controllable compared with the prior art, and the cost is controllable through the internal simple structure, thereby adapting to the use environment with small sewage treatment capacity and the cost control requirement.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a sequencing batch continuous discharge sewage treatment apparatus comprising:
the barrel body comprises an outer barrel and an inner barrel which are arranged concentrically in a double-layer manner;
the rope-shaped biological filler for treating the sewage is arranged on the side wall of the top of the inner cylinder through a plurality of matched hooks;
the first baffle plate and the second baffle plate are arranged on the outer side wall of the bottom of the inner cylinder and are distributed up and down;
wherein, the top end of the inner cylinder is provided with a water inlet pipe, and a drain pipe is arranged above the side wall of the outer cylinder;
an air inlet pipe communicated with an aeration pipe at the bottom of the inner barrel is arranged in the outer barrel;
the first baffle plate and the second baffle plate are configured to have opposite inclined angles, and an overflow gap is formed between the first baffle plate and the second baffle plate, so that a three-phase separation area is formed between the first baffle plate and the second baffle plate, and a settling area is formed between the outer cylinder and the inner cylinder;
the inner cylinder is provided with a plurality of rows of overflow holes or overflow grooves at the position matched with the three-phase separation area.
Preferably, the bottom of the outer barrel is provided with a sewage pump which is communicated with the outside through a matched sewage discharge pipe.
Preferably, an air outlet pipe is further arranged above the inner cylinder.
Preferably, two ends of the second baffle are configured to be connected with the inner cylinder and the outer cylinder respectively;
one end of the first baffle plate is connected with the inner cylinder, and a gap is formed between the other end of the first baffle plate and the outer cylinder;
wherein the first baffle plate is configured at the topmost part of the overflow aperture or the overflow trough;
at least one row of overflow holes or overflow grooves is arranged below the second baffle plate.
A method for sewage treatment using a sequencing batch continuous discharge sewage treatment unit, comprising:
the first sequence is to input sewage into the inner cylinder;
a first sequencing batch, standby;
the third sequence is that the aeration-stop ratio of the aeration pipe is adjusted by adjusting the air inflow or the start-stop state of the air inlet pipe, so as to obtain an anaerobic layer, a facultative layer and an aerobic layer in the inner cylinder;
firstly, performing three-phase separation on the mud-water mixture, the air for aeration, the nitrogen produced by decomposition and the ammonia gas in the inner cylinder through a three-phase separator, and enabling the separated mud-water mixture to enter a precipitation zone for precipitation;
and secondly, continuously, the supernatant after precipitation is output outwards through a drain pipe.
Preferably, in the first continuous process, the content in the inner cylinder can be separated at any time through the structural design of the three-phase separator;
the gas formed by aeration is guided by the first baffle plate during rising and is discharged from the exhaust hole along the rising of the inner cylinder.
Preferably, the muddy water mixture sinks under the action of gravity, and the muddy water mixture slides downwards to the second baffle plate under the guidance of a gap between the first baffle plate and the outer cylinder;
the sediment on the second baffle plate is guided by the inclination angle and is settled towards the direction of the aeration pipe through the overflow hole or the overflow groove;
the settled sludge is released from the overflow hole or the overflow groove under the action of the sewage pump and is separated to the outside through the sewage discharge pipe.
Preferably, after the water level in the inner cylinder rises, the muddy water mixed liquid in the three-phase separation zone enters the outer cylinder from the inner cylinder to be precipitated under the action of pressure, and the supernatant liquid slowly rises under the action of gravity to overflow through the drain pipe.
Preferably, the density of the string-shaped bio-packing is configured to be greater than 1.1
The invention at least comprises the following beneficial effects: the invention adds a three-phase separator into the SBR sewage treatment process equipment of R.L.Irvine, improves the SBR sewage treatment process equipment, realizes the intermittent water inlet, standby and aeration, but continuously deposits and discharges water, and is named as: sequencing batch continuous discharge sewage treatment device, abbreviated as: "SBCR" (sequential Batch & Continuous flow-down Reactor), the greatest improvement of this design lies in that the sewage treatment plant does not need to complete a complete sequential Batch sewage treatment cycle (water intake, standby, aeration, sedimentation, drainage) and then perform a second sequential Batch cycle, namely: the original five sewage treatment sequencing batch processes (water inlet, standby, aeration, precipitation and drainage) are changed into three sequencing batches (water inlet, standby and aeration) and two sequencing batches (precipitation and drainage) which are continuous, and the sequencing batch time is shortened by 70 percent (note: the time for precipitation is longest in the five sewage treatment processes), so that the efficiency is improved by 50 percent, the possibility is provided for equipment miniaturization, and the device can be used in a use place with the daily sewage yield of 5 tons.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view showing the structural layout of a sequencing batch type continuous discharge sewage treatment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view showing the ascending of gas in the sequencing batch type continuous wastewater treatment apparatus according to the present invention;
FIG. 3 is a schematic view illustrating the treatment of solids in the sequencing batch continuous wastewater treatment facility of the present invention;
FIG. 4 is a schematic view illustrating the treatment of liquid in the sequencing batch continuous wastewater treatment facility according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It is to be understood that in the description of the present invention, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are used only for convenience in describing the present invention and for simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Fig. 1 shows an implementation of a sequencing batch continuous discharge sewage treatment plant according to the present invention, which comprises:
the device comprises a barrel body, a separator and a separator, wherein the barrel body comprises an outer barrel 1 and an inner barrel 2 which are arranged concentrically in a double-layer manner, the barrel body consists of an inner concentric barrel (tank) and an outer concentric barrel (tank), and the inner barrel is matched with two baffle plates arranged on the inner barrel to form a three-phase separator;
the rope-shaped biological filler (not shown) for treating sewage is arranged on the side wall of the top of the inner cylinder through a plurality of matched hooks 3, and is mainly used for purifying organic matters by means of a microbial film fixed on the surface of a rope body, so that the rope-shaped biological filler has the advantages of high treatment efficiency, impact load resistance, stable operation, small sludge yield, economy, energy conservation and the like, the biological film is an ecological system consisting of highly dense aerobic bacteria, anaerobic bacteria, facultative bacteria, fungi, protozoa and algae, the structure of the hook can be arranged as required, the hook can be structurally connected with the inner cylinder and can be arranged into a detachable connection or a fixed connection, the specific structure can be in a ring shape with a gap or in a hook shape at the top of a clothes hanger, and the barrel body, the hook and other devices can be arranged into anti-corrosion materials as required so as to ensure the service life of the biological filler, such as stainless steel materials, etc.;
the first baffle plate 4 and the second baffle plate 5 are arranged on the outer side wall of the bottom of the inner cylinder and are distributed up and down, the first baffle plate and the second baffle plate are three-phase separation devices in the scheme, and the three-phase separation devices are arranged at positions and matched with an aeration pipe, a water inlet pipe and a water outlet pipe, so that gap aeration, continuous water inlet and water outlet are realized, and a multi-level A/A/O state can be realized in one pool by further adjusting the aeration-stop ratio;
the top end of the inner barrel is provided with a water inlet pipe 6, a water outlet pipe 7 is arranged above the side wall of the outer barrel and used for separating supernatant formed above after cross precipitation, and the volume inside the outer barrel is adjusted in real time to adapt to continuous water inlet of the water inlet pipe;
an air inlet pipe 9 communicated with an aeration pipe 8 at the bottom of the inner cylinder is arranged in the outer cylinder and is used for introducing air required by aeration into the aeration pipe and further forcibly transferring oxygen in the air to the liquid in the tank so as to obtain enough dissolved oxygen, meanwhile, the gas generated by the aeration pipe prevents the suspension in the tank from sinking, and the contact of organic matters in the tank with microorganisms and dissolved oxygen is enhanced;
the first baffle plate and the second baffle plate are configured to have opposite inclined angles, and an overflow gap 10 is configured between the first baffle plate and the second baffle plate so as to form a three-phase separation zone between the first baffle plate and the second baffle plate, a sedimentation zone is formed between the outer cylinder and the inner cylinder, and through the design of opposite angles between the two baffle plates, a mud-water mixture can flow to the sedimentation zone through the gap between the two baffle plates, and the precipitated sludge is output to the position of the inner cylinder aeration pipe;
the inner cylinder is provided with a plurality of rows of overflow holes 11 or overflow grooves on the position matched with the three-phase separation area, the function of the inner cylinder is to overflow and separate the reacted mud-water mixture to the sedimentation area under the action of gravity and return the returned sludge to the aeration pipe, the sequence Batch type Continuous sewage discharge processor of the SBCR (Sequencing Batch Reactor) in the scheme is an improvement on the sequence Batch type activated sludge Process (SBR for short) Process, the SBR structure is a barrel (pool), and the SBCR is a sewage treatment device which is formed by an inner concentric barrel and an outer concentric barrel and integrates biochemistry and sedimentation into a whole through a unique three-phase separator at the bottom.
In another example, as shown in fig. 1, a sewage pump 12 is provided at the bottom of the outer tub to communicate with the outside through a sewage pipe 13 fitted thereto, and functions to pump out the sludge at the position of the aeration pipe by the function of the sewage pump, and simultaneously pump out the pumped-out sludge through the sewage pipe for collection or discharge.
In another embodiment, as shown in fig. 1, an air outlet pipe 13 is further disposed above the inner cylinder, and the gas generated by the reaction is discharged by aerating the inner cylinder, thereby ensuring the stability of the internal air pressure.
In another example, as shown in fig. 1, both ends of the second baffle are configured to be connected with the inner cylinder and the outer cylinder respectively;
one end of the first baffle plate is connected with the inner cylinder, and a gap is formed between the other end of the first baffle plate and the outer cylinder;
wherein the first baffle plate is configured at the topmost part of the overflow aperture or the overflow trough;
in the scheme, the two baffle plates and the barrel body are limited in structure, so that a sedimentation area can be separated from a mud-water mixture under the action of the baffle plates, and then the settled sludge is communicated with the inner barrel under the action of the baffle plates and the overflow holes or the overflow grooves, so that the sludge flows back to the position near the aerator pipe.
Referring to fig. 1, a method for treating sewage using a sequencing batch type continuous discharge sewage treatment apparatus includes:
the first sequence is to input sewage into the inner cylinder;
a first sequencing batch, standby;
the third sequence is that the aeration-stop ratio of the aeration pipe is adjusted by adjusting the air inflow or the start-stop state of the air inlet pipe, so as to obtain an anaerobic layer A, a facultative layer B and an aerobic layer C in the inner cylinder;
firstly, continuously performing three-phase separation on the mud-water mixture, the air for aeration, the nitrogen produced by decomposition and the ammonia gas in the inner cylinder through a three-phase separator, and enabling the separated mud-water mixture to enter a precipitation area D for precipitation;
and secondly, continuously outputting the supernatant after precipitation through a drain pipe, wherein the key innovative technology in the scheme is a three-phase separation design, and because the aeration and the activated sludge exist, the sludge-water mixture, the aerated air, the decomposed nitrogen and ammonia and the like coexist in the inner barrel, the three-phase separator can realize the separation of the aeration and the activated sludge at any time, and continuous precipitation and water outlet are realized without independently setting two sequencing batches of precipitation and water outlet, so that compared with the prior art, intermittent water supply is not needed, the sewage treatment can be continuously carried out, and compared with the prior art, the sequencing batch time can be shortened by 70 percent (note: the time for precipitation is longest in five processes of sewage treatment), the efficiency is improved by 50 percent, the possibility is provided for equipment miniaturization, and the device can be used in a use place with the daily sewage yield of 5 tons.
In another example, as shown in fig. 2, in the first series, the content of the inner cylinder can be separated at any time through the structure design of the three-phase separator;
the gas E formed by aeration is guided by the first baffle plate during rising and is discharged from the exhaust hole after rising along the inner cylinder, and the rising flow path of the gas in the three-phase separator structure comprises: the gas formed by aeration is guided by the upper baffle in the rising process due to low density and large buoyancy, does not enter a settling zone, and rises along the inner barrel to the top to be discharged.
In another example, as shown in fig. 3, the muddy water mixture sinks under the action of gravity, and the first baffle plate and the outer cylinder are guided by a gap to slide downwards to the second baffle plate;
the sediment on the second baffle plate is guided by the inclination angle and is settled towards the direction of the aeration pipe through the overflow hole or the overflow groove;
the mud F after subsiding is under the effect of dredge pump, is released from overflow hole or overflow launder, through the outside separation of blow off pipe, and the processing flow of solid includes in the three-phase separator structure: the solid refers to sludge, and the sludge-water mixture slowly sinks in the settling zone due to the action of gravity and sinks to the vicinity of the aeration pipe under the combined action of the upper baffle and the lower baffle.
In another example, as shown in fig. 4, after the water level in the inner cylinder is raised, the slurry-water mixture in the three-phase separation zone enters the outer cylinder to be precipitated under the action of pressure, and the supernatant G is slowly raised under the action of gravity to overflow through the drain pipe, and the liquid treatment process in the three-phase separator structure comprises: after water enters the inner barrel, the liquid level rises, under the action of pressure, the muddy water mixed liquid in the three-phase separation zone of the inner barrel enters the outer barrel for precipitation, sludge slowly sinks under the action of gravity, and supernatant liquid slowly rises and overflows through a drain pipe.
In another example, the density of the rope-shaped biological filler is configured to be more than 1.1, and the biological Film, namely IIFAS (Integrated filtered-Film Activated Sludge) process is combined to form suspended Sludge and suspended filler biological Film to form a two-phase microorganism body, so that the impact resistance is enhanced.
The biomembrane can naturally grow on the rope-shaped biological filler, the outer surface of the microbial membrane is mainly ammoniated nitrobacteria and aerobic bacteria due to relatively high DO concentration, and an anoxic environment is generated due to the large consumption of external oxygen and the blocked oxygen transfer inside the microbial membrane, and denitrifying bacteria dominate, so that a favorable environment is provided for the simultaneous nitrification reaction and denitrification reaction, namely, the nitrification reaction is carried out outside the floating rope-shaped biological filler, and the denitrification reaction is completed inside the rope-shaped biological filler.
The above scheme is merely illustrative of a preferred example, and is not limiting. When the invention is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (9)
1. A sequencing batch continuous discharge sewage treatment plant, comprising:
the barrel body comprises an outer barrel and an inner barrel which are arranged concentrically in a double-layer manner;
the rope-shaped biological filler for treating the sewage is arranged on the side wall of the top of the inner cylinder through a plurality of matched hooks;
the first baffle plate and the second baffle plate are arranged on the outer side wall of the bottom of the inner cylinder and are distributed up and down;
wherein, the top end of the inner cylinder is provided with a water inlet pipe, and a drain pipe is arranged above the side wall of the outer cylinder;
an air inlet pipe communicated with an aeration pipe at the bottom of the inner barrel is arranged in the outer barrel;
the first baffle plate and the second baffle plate are configured to have opposite inclined angles, and an overflow gap is formed between the first baffle plate and the second baffle plate, so that a three-phase separation area is formed between the first baffle plate and the second baffle plate, and a settling area is formed between the outer cylinder and the inner cylinder;
the inner cylinder is provided with a plurality of rows of overflow holes or overflow grooves at the position matched with the three-phase separation area.
2. The sequencing batch continuous sewage disposal apparatus of claim 1 wherein a sewage pump is provided at the bottom of said outer tub to communicate with the outside through a matched sewage pipe.
3. The sequencing batch continuous sewage treatment plant of claim 1 wherein an air outlet pipe is further provided above the inner vessel.
4. The sequencing batch continuous drain sewage processor of claim 1 wherein both ends of the second baffle are configured to be connected to the inner cylinder and the outer cylinder, respectively;
one end of the first baffle plate is connected with the inner cylinder, and a gap is formed between the other end of the first baffle plate and the outer cylinder;
wherein the first baffle plate is configured at the topmost part of the overflow aperture or the overflow trough;
at least one row of overflow holes or overflow grooves is arranged below the second baffle plate.
5. A method for sewage treatment using a sequencing batch continuous discharge sewage treatment facility as claimed in any one of claims 1 to 4, comprising:
the first sequence is to input sewage into the inner cylinder;
a first sequencing batch, standby;
the third sequence is that the aeration-stop ratio of the aeration pipe is adjusted by adjusting the air inflow or the start-stop state of the air inlet pipe, so as to obtain an anaerobic layer, a facultative layer and an aerobic layer in the inner cylinder;
firstly, performing three-phase separation on the mud-water mixture, the air for aeration, the nitrogen produced by decomposition and the ammonia gas in the inner cylinder through a three-phase separator, and enabling the separated mud-water mixture to enter a precipitation zone for precipitation;
and secondly, continuously, the supernatant after precipitation is output outwards through a drain pipe.
6. The method for sewage treatment using a sequencing batch continuous discharge sewage treatment facility as claimed in claim 5, wherein in the first series, the contents of the inner tub can be separated at any time by a three-phase separator structure design;
the gas formed by aeration is guided by the first baffle plate during rising and is discharged from the exhaust hole along the rising of the inner cylinder.
7. The method of sewage treatment using a sequencing batch continuous discharge sewage treatment facility as claimed in claim 6, wherein the mixture of sludge and water sinks by gravity, and the first baffle plate is guided to slide down to the second baffle plate by a gap between the first baffle plate and the outer tub;
the sediment on the second baffle plate is guided by the inclination angle and is settled towards the direction of the aeration pipe through the overflow hole or the overflow groove;
the settled sludge is released from the overflow hole or the overflow groove under the action of the sewage pump and is separated to the outside through the sewage discharge pipe.
8. The method as claimed in claim 7, wherein the slurry mixture in the three-phase separation zone is introduced into the outer tub under pressure after the water level in the inner tub is raised, and then slowly rises by gravity to overflow through the drain pipe.
9. The method for wastewater treatment using a sequencing batch continuous discharge wastewater treatment facility as set forth in claim 7, wherein the density of the string-shaped bio-packing is configured to be greater than 1.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010166281.3A CN111204868A (en) | 2020-03-11 | 2020-03-11 | Sequencing batch type continuous discharge sewage treatment device and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010166281.3A CN111204868A (en) | 2020-03-11 | 2020-03-11 | Sequencing batch type continuous discharge sewage treatment device and application method thereof |
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| CN111204868A true CN111204868A (en) | 2020-05-29 |
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| CN202010166281.3A Pending CN111204868A (en) | 2020-03-11 | 2020-03-11 | Sequencing batch type continuous discharge sewage treatment device and application method thereof |
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