CN112408599A - Aerobic granular sludge-based immersed effluent weir sewage treatment system and process - Google Patents
Aerobic granular sludge-based immersed effluent weir sewage treatment system and process Download PDFInfo
- Publication number
- CN112408599A CN112408599A CN202011272019.3A CN202011272019A CN112408599A CN 112408599 A CN112408599 A CN 112408599A CN 202011272019 A CN202011272019 A CN 202011272019A CN 112408599 A CN112408599 A CN 112408599A
- Authority
- CN
- China
- Prior art keywords
- sludge
- reaction tank
- sewage
- tank
- water inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to an aerobic granular sludge-based immersed effluent weir sewage treatment system, which comprises a pretreatment tank, a distribution tank, a plurality of SBR reaction tanks, an air blower room and a sand filter tank, wherein each SBR reaction tank consists of a reaction tank, a water inlet pipe, an aeration disc, an intermediate effluent weir and a DO probe; a DO probe is arranged in the reaction tank, and sludge is inoculated in the SBR reaction tank. The sewage treatment process comprises the following steps: a) feeding water; b) aerating; c) reacting; d) precipitating; e) and discharging water. The sewage treatment system and the process of the invention utilize aerobic granular sludge or sludge with good sedimentation performance in the reaction tank to fully contact with sewage, and utilize aerobic, anoxic and anaerobic reactions to realize the removal of organic matters and ammonia nitrogen in the sewage. The characteristics of quick water outlet and intermediate water outlet of the intermediate water outlet weir can screen out granular sludge with good sedimentation performance.
Description
Technical Field
The invention relates to a sewage treatment system and a process, in particular to an aerobic granular sludge-based immersed effluent weir sewage treatment system and a process, wherein the process has the characteristics of continuous water inlet and quick water outlet, in particular to the aerobic granular sludge-based immersed effluent weir sewage treatment system and the process, one water inlet tank/blower room is branched into a plurality of SBR reaction tanks connected in parallel to improve the efficiency of a water inlet pump/blower room, the top of an effluent weir is covered and positioned in the middle of a reaction tank main body, sludge granules with poor sedimentation performance are removed in a middle effluent manner, and COD (chemical oxygen demand) and nitrogen elements in sewage are removed through aerobic granular sludge or sludge with good sedimentation performance.
Background
The environment contains a great amount of high-concentration organic wastewater, and the problem can be effectively solved by aerobic granular sludge. The aerobic granular sludge is a microorganism aggregate with high microorganism diversity, and the aerobic zone, the anaerobic zone and the anoxic zone are integrated in the aerobic granular sludge. When the aerobic granular sludge is applied to high-concentration organic wastewater, high-salinity wastewater and a plurality of industrial wastewater, the aerobic granular sludge shows good treatment effect.
Various researches on the culture aspect of the aerobic granular sludge are made at home and abroad, but the culture of the aerobic granular sludge still has a great number of problems. In the culture equipment of aerobic granular sludge, the mode of culturing the aerobic granular sludge by SBR (sequencing batch reactor) has the characteristics that the height and diameter of a water inlet pipe are larger, and large-flow water inlet cannot be ensured, and various domestic aerobic activated sludge culture equipment has long culture time, and cultured sludge is unstable and cannot have the capability of stable operation. The operation parameters of the aerobic granular sludge cannot be determined, and the interior of the aerobic granular sludge is easy to disintegrate in repeated operation, so that fewer use examples of the aerobic granular sludge are provided.
The invention aims to provide a method for culturing aerobic granular sludge by an immersed effluent weir and controlling the time of a sedimentation stage of a reaction tank, wherein water inlet and water outlet are performed alternately, the time of a single running period of a reactor is fully shortened, meanwhile, a water inlet tank/an air blower room is branched into a plurality of SBR reaction tanks connected in parallel, and water inlet and aeration are controlled by a water inlet pipe valve and an air pipeline valve in front of the reaction tanks so as to improve the efficiency of a water inlet pump and the air blower room.
Disclosure of Invention
In order to overcome the defects of the technical problems, the invention provides an aerobic granular sludge-based submerged effluent weir sewage treatment system and process.
The invention relates to an aerobic granular sludge-based immersed effluent weir sewage treatment system, which comprises a pretreatment tank, a distribution tank, a plurality of SBR reaction tanks, an air blower room and a sand filter tank, wherein sewage flows into the distribution tank after being pretreated by the pretreatment tank, effluent of the distribution tank is pumped to each SBR reaction tank by a water inlet pump, and the air blower room is used for supplying air to each SBR reaction tank; the method is characterized in that: the SBR reaction tank consists of a reaction tank, a water inlet pipe, an aeration disc, a middle effluent weir and a DO probe, wherein the water inlet pipe is communicated with the bottom of the reaction tank, the water inlet pipe is communicated with a water outlet of a water inlet pump through a pipeline, and the aeration disc is communicated with an air outlet of a blower room through a pipeline; a middle effluent weir is arranged at one-third to two-thirds positions below the maximum water inlet height of the reaction tank; a DO probe for detecting the value of dissolved oxygen is arranged in the reaction tank, and the DO probe extends to the lower part of the middle effluent weir; a water inlet valve is arranged on a water inlet pipe of each SBR reaction tank, and an air pipeline valve is arranged on a pipeline between an aeration disc and a blower room in each SBR reaction tank; the water outlet of each SBR reaction tank is connected to the water receiving port of the sand filter tank through a pipeline, the treated sewage is discharged through the water outlet of the sand filter tank, and sludge is inoculated in each SBR reaction tank.
The aerobic granular sludge-based immersed effluent weir sewage treatment system is characterized in that a grating, a grit chamber and an alkali liquor filling device are arranged in a pretreatment tank, the grating and the grit chamber are used for removing suspended substances in sewage, and the alkali liquor filling device is used for adjusting the pH value in an SBR reaction tank.
According to the aerobic granular sludge-based immersed effluent weir sewage treatment system, the upper wall and the lower wall of the middle effluent weir are closed, and effluent weir holes are uniformly formed in the two side walls.
The invention discloses a sewage treatment process of an immersed effluent weir sewage treatment system based on aerobic granular sludge, which is characterized by comprising the following steps of:
a) in the water inlet stage, the sewage to be treated firstly enters a pretreatment tank for filtering suspended substances in water and regulating the pH value, and then enters a distribution tank; sewage in the distribution pool is pumped to the corresponding SBR reaction pool under the pumping action of the water inlet pump and the switching action of the water inlet valve, and the water inlet distribution method comprises the following steps: the water in the distribution pool is continuously and respectively fed into each SBR reaction pool by a water pump, only the water inlet valve of one SBR reaction pool is opened at the same time, the water inlet valve of the second SBR reaction pool is opened when the water feeding of the first SBR reaction pool is finished, and the water inlet valve of the third SBR reaction pool is opened when the water feeding of the second SBR reaction pool is finished, and the steps are sequentially carried out; the water inlet time of the SBR reaction tank is as follows: the water inlet of the current period and the water outlet of the previous period are simultaneously started;
b) an aeration stage, when the current water inlet stage of the SBR reaction tank is started or finished, opening an air pipeline valve between an aeration disc and an air blower room, carrying out aeration oxygenation and stirring on the sewage in the SBR reaction tank so as to increase dissolved oxygen in the reaction tank and fully mix sludge and the sewage;
c) in the reaction stage, in the aeration condition, in the process that sewage entering an SBR reaction tank rises in the reaction tank, aerobic granular sludge or sludge with good sedimentation performance cultured in the reaction tank is fully contacted with the sewage, meanwhile, due to dissolved oxygen mass transfer resistance factors in the cultured aerobic granular sludge, the aerobic granular sludge is divided into an aerobic zone, an anoxic zone and an anaerobic zone from outside to inside, aerobic respiration is carried out on microorganisms in the aerobic zone and the sludge to consume organic matters in the water, nitrification of ammonia nitrogen is completed, the organic matters in the anoxic zone and the anaerobic zone are further degraded and carry out denitrification of partial nitrate nitrogen, synchronous nitrification and denitrification of ammonia nitrogen are realized in the aerobic granular sludge, and the removal of the organic matters and the ammonia nitrogen in the sewage is realized;
d) a sedimentation stage, detecting the value of dissolved oxygen in water through a DO probe in the reaction stage, and when the dissolved oxygen in the sewage in the reaction tank is more than 6mg/L and has a rising trend, shutting off an air pipeline valve between the SBR reaction tank and an air blower room, stopping aeration, ending the reaction stage, and then entering the sedimentation stage; in the sedimentation stage, sludge with good sedimentation performance is sedimentated below the middle effluent weir, and sludge with poor sedimentation performance which is not sedimentated completely in the sedimentation time is positioned above the middle effluent weir;
e) and a water outlet stage, after the precipitation stage is finished, discharging sludge which is poor in precipitation performance and is positioned above the middle water outlet weir together with sewage through a water outlet weir hole on the middle water outlet weir, entering the sand filter, and finally discharging the sludge after further precipitation of the sand filter.
The sewage treatment process of the aerobic granular sludge-based immersed effluent weir sewage treatment system has the advantages that the total reaction time of a single period is 240-300 min, and the time of a water inlet stage is 40-60 min.
According to the sewage treatment process of the aerobic granular sludge-based immersed effluent weir sewage treatment system, in the aeration stage in the step b), if aeration is started at the same time of starting water inflow, dissolved oxygen in water is increased through aeration, and sludge and sewage are fully mixed to provide an aerobic environment for sludge, and the anoxic section reaction in sludge is only carried out by aerobic granular sludge; if aeration is started after water inflow is finished, an anoxic environment is produced for the sludge in the time period, and a denitrification process of nitrate nitrogen is carried out, so that the removal rate of ammonia nitrogen in the sewage is further improved.
The invention has the beneficial effects that: the invention relates to an aerobic granular sludge-based immersed effluent weir sewage treatment system and a process, which comprises pretreatment, a water distribution tank, SBR reaction tanks, an air blower room and a sand filter tank, wherein a plurality of SBR reaction tanks are connected in parallel to improve the efficiency of a water inlet pump, in the reaction stage, aerobic granular sludge or sludge with good precipitation performance cultured in the reaction tank is fully contacted with sewage, meanwhile, the interior of the cultured aerobic granular sludge is divided into an aerobic zone, an anoxic zone and an anaerobic zone from outside to inside due to dissolved oxygen mass transfer resistance factors, aerobic respiration is carried out between the aerobic zone and microorganisms in the sludge to consume organic matters in the water, and the nitrification of ammonia nitrogen is completed, the organic matters are further degraded in the anoxic zone and the anaerobic zone and the denitrification of partial nitrate nitrogen is carried out, synchronous nitrification and denitrification of ammonia nitrogen are realized in the aerobic granular sludge, and organic matters and ammonia nitrogen in sewage are removed. The characteristic that the water outlet and inlet and outlet stages are carried out simultaneously in a short time under the action of the water pressure at the upper part of the water outlet weir is achieved, the time of a single cycle of SBR operation is shortened, the suspended sludge with poor sedimentation performance is discharged by the characteristics of quick water outlet and intermediate water outlet of the immersed intermediate water outlet weir, sludge particles with good sedimentation performance are reserved, and the granular sludge with good sedimentation performance is screened.
Drawings
FIG. 1 is a schematic diagram of an aerobic granular sludge based submerged weir sewage treatment system of the present invention;
FIG. 2 is a flow chart of a sewage treatment process of the aerobic granular sludge based submerged weir sewage treatment system of the present invention;
FIG. 3 is a schematic view of the structure of the SBR reaction tank in the present invention.
In the figure: 1 pretreatment tank, 2 distribution tank, 3 SBR reaction tank, 4 blower room, 5 sand filter tank, 6 reaction tank, 7 inlet pipe, 8 aeration disk, 9 middle water outlet weir, 10 DO probe, 11 inlet pump, 12 inlet valve, 13 air pipeline valve, 14 outlet weir hole.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in fig. 1, a schematic diagram of an immersed effluent weir sewage treatment system based on aerobic granular sludge is provided, which comprises a pretreatment tank 1, a distribution tank 2, a plurality of SBR reaction tanks 3, an air blower chamber 4 and a sand filter tank 5, wherein sewage flows into the distribution tank 2 after being pretreated by the pretreatment tank 1, a water inlet pump 11 is arranged at a water outlet of the distribution tank 2, and a water outlet of the water inlet pump 11 is communicated with a water inlet of each SBR reaction tank 3 through a pipeline so as to pump the sewage in the distribution tank 2 into the corresponding SBR reaction tank 3. The blower room 4 is shown to be in communication with the aeration device in each SBR reaction tank 3 via a pipeline to achieve aeration oxygenation of each SBR reaction tank 3. The water outlet of each SBR reaction tank 3 is converged to the water inlet of the sand filter 5 through a pipeline, and is discharged after further filtration and sedimentation of the sand filter 5.
A grating, a grit chamber and an alkali liquor filling device are arranged in the pretreatment tank 1, the grating and the grit chamber are used for removing suspended substances in sewage, and the alkali liquor filling device is used for adjusting the pH value in the SBR reaction tank. All be provided with inlet valve 12 on the pipeline between every SBR reaction tank 3 and the intake pump 11, through the switching of control inlet valve 12, can control the water inlet state of every SBR reaction tank 3 respectively to satisfy the requirement that all SBR reaction tanks 3 intake in proper order. An air pipeline valve 13 is arranged on an aeration disc 8 in each SBR reaction tank 3 and an air supply pipeline in front of the blower room 4, and the aeration and the stop of the aeration of each SBR reaction tank 3 can be controlled by controlling the on-off state of the air pipeline valve 13.
As shown in fig. 3, a schematic structural diagram of the SBR reaction tank of the present invention is shown, the SBR reaction tank 3 is composed of a reaction tank 6, a water inlet pipe 7, an aeration plate 8, an intermediate effluent weir 9, and a DO probe 10, one end of the water inlet pipe 7 is communicated with a water inlet pump 11 through a water inlet valve 12, and the other end is communicated with the bottom of the reaction tank 6, for introducing the sewage to be treated into the bottom of the reaction tank 6, and a water distribution device may be provided at the bottom of the reaction tank 6 for uniformly distributing the incoming sewage. The aeration disc 8 is arranged at the bottom of the reaction tank 6, and the aeration disc 8 is communicated with the air outlet of the blower room 4 through an air pipeline valve 13 so as to realize oxygenation and stirring of sewage in the reaction tank 6.
The intake water level shown corresponds to the maximum intake height, which can be calibrated by providing a level sensor. The middle water outlet weir 9 is arranged in the reaction tank 6 at the position from one third to two thirds of the maximum water inlet height, the inside of the water outlet weir 9 is a cavity, the upper wall and the lower wall of the water outlet weir 9 are both in a sealing state, water outlet weir holes 14 are uniformly formed in the two side walls of the water outlet weir 9, in the water outlet stage after the water outlet stage is received in the precipitation stage, sewage on the upper part of the middle water outlet weir 9 quickly flows out through the water outlet weir holes 14 in a short time under the action of water pressure, and meanwhile, sludge which is still remained on the upper part of the middle water outlet weir 9 and has poor settling property is discharged along with the sewage after the water outlet stage is received in the precipitation stage, so that sludge with good settling property is remained in the reaction tank, and. A DO probe 10 is shown for measuring the dissolved oxygen level of the wastewater in the reaction tank, the measurement site of the DO probe 10 extending below the intermediate effluent weir 9.
As shown in FIG. 2, a flow chart of the sewage treatment process of the aerobic granular sludge-based submerged effluent weir sewage treatment system of the present invention is provided, which is realized by the following steps:
a) in the water inlet stage, the sewage to be treated firstly enters a pretreatment tank for filtering suspended substances in water and regulating the pH value, and then enters a distribution tank; sewage in the distribution pool is pumped to the corresponding SBR reaction pool under the pumping action of the water inlet pump and the switching action of the water inlet valve, and the water inlet distribution method comprises the following steps: the water in the distribution pool is continuously and respectively fed into each SBR reaction pool by a water pump, only the water inlet valve of one SBR reaction pool is opened at the same time, the water inlet valve of the second SBR reaction pool is opened when the water feeding of the first SBR reaction pool is finished, and the water inlet valve of the third SBR reaction pool is opened when the water feeding of the second SBR reaction pool is finished, and the steps are sequentially carried out; the water inlet time of the SBR reaction tank is as follows: the water inlet of the current period and the water outlet of the previous period are simultaneously started;
in the step, when the water inlet liquid level of the SBR reaction tank reaches the maximum water inlet height, water inlet is stopped.
b) An aeration stage, when the current water inlet stage of the SBR reaction tank is started or finished, opening an air pipeline valve between an aeration disc and an air blower room, carrying out aeration oxygenation and stirring on the sewage in the SBR reaction tank so as to increase dissolved oxygen in the reaction tank and fully mix sludge and the sewage;
in the step, if aeration is started at the same time of starting water inlet, dissolved oxygen in water is increased through aeration, sludge is fully mixed with sewage, an aerobic environment is provided for the sludge, and the anoxic section reaction in the sludge is only carried out by aerobic granular sludge; if aeration is started after water inflow is finished, an anoxic environment is produced for the sludge in the time period, and a denitrification process of nitrate nitrogen is carried out, so that the removal rate of ammonia nitrogen in the sewage is further improved.
c) In the reaction stage, in the aeration condition, in the process that sewage entering an SBR reaction tank rises in the reaction tank, aerobic granular sludge or sludge with good sedimentation performance cultured in the reaction tank is fully contacted with the sewage, meanwhile, due to dissolved oxygen mass transfer resistance factors in the cultured aerobic granular sludge, the aerobic granular sludge is divided into an aerobic zone, an anoxic zone and an anaerobic zone from outside to inside, aerobic respiration is carried out on microorganisms in the aerobic zone and the sludge to consume organic matters in the water, nitrification of ammonia nitrogen is completed, the organic matters in the anoxic zone and the anaerobic zone are further degraded and carry out denitrification of partial nitrate nitrogen, synchronous nitrification and denitrification of ammonia nitrogen are realized in the aerobic granular sludge, and the removal of the organic matters and the ammonia nitrogen in the sewage is realized;
d) a sedimentation stage, detecting the value of dissolved oxygen in water through a DO probe in the reaction stage, and when the dissolved oxygen in the sewage in the reaction tank is more than 6mg/L and has a rising trend, shutting off an air pipeline valve between the SBR reaction tank and an air blower room, stopping aeration, ending the reaction stage, and then entering the sedimentation stage; in the sedimentation stage, sludge with good sedimentation performance is sedimentated below the middle effluent weir, and sludge with poor sedimentation performance which is not sedimentated completely in the sedimentation time is positioned above the middle effluent weir;
when COD and ammonia nitrogen are contained in the reaction tank, aerobic respiration is carried out on microorganisms in the tank, and the DO consumed in the tank and the DO supplemented by aeration are kept balanced and are between 2 and 6 mg/L; when DO in the reaction tank is higher than the equilibrium value, the aerobic process reaction in the reaction tank is finished, and the valve of the air pipeline is controlled to be closed.
e) And a water outlet stage, after the precipitation stage is finished, discharging sludge which is poor in precipitation performance and is positioned above the middle water outlet weir together with sewage through a water outlet weir hole on the middle water outlet weir, entering the sand filter, and finally discharging the sludge after further precipitation of the sand filter.
In the step, the water outlet speed is accelerated by the water pressure existing in the water outlet process, the purpose of quickly discharging water in a short time is achieved, sludge with the sedimentation speed lower than 10m/h can be discharged and run off in the short time, sludge with excellent sedimentation performance is intercepted, aerobic granular sludge or sludge with good sedimentation performance is gradually cultured, and the quick water outlet in the short time promotes the implementation of each stage of the SBR reaction tank.
Wherein the total reaction time of a single period is 240-300 min, the time of a water inlet stage is 40-60 min, the water outlet time is about 5min, and the aeration time is 230-290 min. The removal rate of COD in water can reach 95 percent.
Claims (6)
1. An immersed effluent weir sewage treatment system based on aerobic granular sludge comprises a pretreatment tank (1), a distribution tank (2), a plurality of SBR reaction tanks (3), an air blower room (4) and a sand filter tank (5), wherein sewage flows into the distribution tank after being pretreated by the pretreatment tank, effluent of the distribution tank is pumped to each SBR reaction tank through an inlet pump (11), and the air blower room is used for supplying air to each SBR reaction tank; the method is characterized in that: the SBR reaction tank consists of a reaction tank (6), a water inlet pipe (7), an aeration disc (8), a middle effluent weir (9) and a DO probe, wherein the water inlet pipe is communicated with the bottom of the reaction tank, the water inlet pipe is communicated with a water outlet of a water inlet pump through a pipeline, and the aeration disc is communicated with an air outlet of a blower room through a pipeline; a middle effluent weir (9) is arranged at one third to two thirds position below the maximum water inlet height of the reaction tank; a DO probe for detecting the value of dissolved oxygen is arranged in the reaction tank, and the DO probe extends to the lower part of the middle effluent weir; a water inlet valve (12) is arranged on a water inlet pipe of each SBR reaction tank, and an air pipeline valve (13) is arranged on a pipeline between an aeration disc and a blower room in each SBR reaction tank; the water outlet of each SBR reaction tank is connected to the water receiving port of the sand filter tank through a pipeline, the treated sewage is discharged through the water outlet of the sand filter tank, and sludge is inoculated in each SBR reaction tank.
2. The aerobic granular sludge based submerged weir sewage treatment system as claimed in claim 1, wherein: be provided with grid, grit chamber and alkali lye filling device in preliminary treatment pond (1), grid and grit chamber are used for removing the suspended substance in the sewage, and alkali lye filling device is used for adjusting the pH value in the SBR reaction tank.
3. The aerobic granular sludge based submerged weir sewage treatment system as claimed in claim 1 or 2, wherein: the upper wall and the lower wall of the middle water outlet weir (9) are closed, and water outlet weir holes (14) are uniformly formed in the two side walls.
4. A sewage treatment method based on the aerobic granular sludge-based submerged effluent weir sewage treatment system of claim 1, which is characterized by comprising the following steps:
a) in the water inlet stage, the sewage to be treated firstly enters a pretreatment tank for filtering suspended substances in water and regulating the pH value, and then enters a distribution tank; sewage in the distribution pool is pumped to the corresponding SBR reaction pool under the pumping action of the water inlet pump and the switching action of the water inlet valve, and the water inlet distribution method comprises the following steps: the water in the distribution pool is continuously and respectively fed into each SBR reaction pool by a water pump, only the water inlet valve of one SBR reaction pool is opened at the same time, the water inlet valve of the second SBR reaction pool is opened when the water feeding of the first SBR reaction pool is finished, and the water inlet valve of the third SBR reaction pool is opened when the water feeding of the second SBR reaction pool is finished, and the steps are sequentially carried out; the water inlet time of the SBR reaction tank is as follows: the water inlet of the current period and the water outlet of the previous period are simultaneously started;
b) an aeration stage, when the current water inlet stage of the SBR reaction tank is started or finished, opening an air pipeline valve between an aeration disc and an air blower room, carrying out aeration oxygenation and stirring on the sewage in the SBR reaction tank so as to increase dissolved oxygen in the reaction tank and fully mix sludge and the sewage;
c) in the reaction stage, in the aeration condition, in the process that sewage entering an SBR reaction tank rises in the reaction tank, aerobic granular sludge or sludge with good sedimentation performance cultured in the reaction tank is fully contacted with the sewage, meanwhile, due to dissolved oxygen mass transfer resistance factors in the cultured aerobic granular sludge, the aerobic granular sludge is divided into an aerobic zone, an anoxic zone and an anaerobic zone from outside to inside, aerobic respiration is carried out on microorganisms in the aerobic zone and the sludge to consume organic matters in the water, nitrification of ammonia nitrogen is completed, the organic matters in the anoxic zone and the anaerobic zone are further degraded and carry out denitrification of partial nitrate nitrogen, synchronous nitrification and denitrification of ammonia nitrogen are realized in the aerobic granular sludge, and the removal of the organic matters and the ammonia nitrogen in the sewage is realized;
d) a sedimentation stage, detecting the value of dissolved oxygen in water through a DO probe in the reaction stage, and when the dissolved oxygen in the sewage in the reaction tank is more than 6mg/L and has a rising trend, shutting off an air pipeline valve between the SBR reaction tank and an air blower room, stopping aeration, ending the reaction stage, and then entering the sedimentation stage; in the sedimentation stage, sludge with good sedimentation performance is sedimentated below the middle effluent weir, and sludge with poor sedimentation performance which is not sedimentated completely in the sedimentation time is positioned above the middle effluent weir;
e) and a water outlet stage, after the precipitation stage is finished, discharging sludge which is poor in precipitation performance and is positioned above the middle water outlet weir together with sewage through a water outlet weir hole on the middle water outlet weir, entering the sand filter, and finally discharging the sludge after further precipitation of the sand filter.
5. The aerobic granular sludge-based sewage treatment method of the submerged weir sewage treatment system as recited in claim 4, wherein: the total reaction time of a single period is 240-300 min, and the time of a water inlet stage is 40-60 min.
6. The aerobic granular sludge-based sewage treatment method of the submerged weir sewage treatment system as recited in claim 4, wherein: in the aeration stage of the step b), if aeration is started at the same time of starting water inlet, the dissolved oxygen in water is increased through aeration, sludge is fully mixed with sewage, an aerobic environment is provided for the sludge, and the anoxic section reaction in the sludge is only carried out by aerobic granular sludge; if aeration is started after water inflow is finished, an anoxic environment is produced for the sludge in the time period, and a denitrification process of nitrate nitrogen is carried out, so that the removal rate of ammonia nitrogen in the sewage is further improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011272019.3A CN112408599A (en) | 2020-11-13 | 2020-11-13 | Aerobic granular sludge-based immersed effluent weir sewage treatment system and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011272019.3A CN112408599A (en) | 2020-11-13 | 2020-11-13 | Aerobic granular sludge-based immersed effluent weir sewage treatment system and process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112408599A true CN112408599A (en) | 2021-02-26 |
Family
ID=74832307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011272019.3A Pending CN112408599A (en) | 2020-11-13 | 2020-11-13 | Aerobic granular sludge-based immersed effluent weir sewage treatment system and process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112408599A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845215A (en) * | 2021-10-21 | 2021-12-28 | 龙游县河道疏浚砂资源开发有限公司 | Aerobic granular sludge treatment system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745699A (en) * | 2016-11-28 | 2017-05-31 | 广西大学 | A kind of composite S BR waste water treatment process |
| CN210764548U (en) * | 2019-09-17 | 2020-06-16 | 新疆农业大学 | Particle size screening device of aerobic particle sludge system of SBR (sequencing batch reactor) |
-
2020
- 2020-11-13 CN CN202011272019.3A patent/CN112408599A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745699A (en) * | 2016-11-28 | 2017-05-31 | 广西大学 | A kind of composite S BR waste water treatment process |
| CN210764548U (en) * | 2019-09-17 | 2020-06-16 | 新疆农业大学 | Particle size screening device of aerobic particle sludge system of SBR (sequencing batch reactor) |
Non-Patent Citations (1)
| Title |
|---|
| 唐堂等: "SBR不同沉降时间的污泥特性研究", 《中国给水排水》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845215A (en) * | 2021-10-21 | 2021-12-28 | 龙游县河道疏浚砂资源开发有限公司 | Aerobic granular sludge treatment system |
| CN113845215B (en) * | 2021-10-21 | 2022-06-07 | 龙游县河道疏浚砂资源开发有限公司 | Aerobic granular sludge treatment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110436704B (en) | Urban sewage treatment upgrading and reforming process based on anaerobic ammonia oxidation | |
| US9938173B2 (en) | Apparatus for water, wastewater, and waste treatment | |
| CN107902850B (en) | Enhanced denitrification treatment process for biological membrane | |
| CN114315037B (en) | Inversion A of external electric field 2 O-GDMBR (membrane bioreactor-membrane bioreactor) integrated village and town sewage treatment device and method | |
| CN112358134A (en) | Aerobic granular sludge-based immersed effluent weir sewage treatment device and method | |
| CN107973398A (en) | A kind of pusher reaction unit and its cultural method for cultivating aerobic particle mud | |
| CN207537216U (en) | A kind of baffle plate type anaerobic membrane bioreactor system | |
| CN111268796A (en) | System and method for treating low C/N ratio domestic sewage by anaerobic/anoxic filler and staged water inlet three-stage AO | |
| CN110950434A (en) | MBR sewage treatment system and control method thereof | |
| CN113697956A (en) | Method for rapidly culturing aerobic granular sludge | |
| CN111099726A (en) | Synchronous denitrification and dephosphorization double-sludge sewage treatment system and treatment process thereof | |
| CN112010507A (en) | Household domestic sewage treatment device | |
| CN109701499B (en) | Nitrogen and phosphorus removal wastewater treatment method | |
| CN112408599A (en) | Aerobic granular sludge-based immersed effluent weir sewage treatment system and process | |
| CN112551828A (en) | Low-carbon-nitrogen-ratio rural domestic sewage treatment device and treatment process thereof | |
| CN111302495A (en) | Villages and small towns sewage treatment's deep bed multiplication MBR reactor | |
| CN208218501U (en) | A kind of perseverance water level SBR sewage disposal device | |
| CN216687842U (en) | Integrated device for deep total nitrogen removal treatment of high ammonia nitrogen sewage | |
| CN207511912U (en) | A kind of pusher reaction unit for cultivating aerobic particle mud | |
| CN214192931U (en) | Aerobic granular sludge-based immersed effluent weir sewage treatment device | |
| CN214528307U (en) | Domestic sewage moderate treatment device suitable for mining area | |
| CN212269815U (en) | Sewage denitrification device | |
| CN108128895A (en) | A kind of biological denitrificaion integrated processing technique | |
| CN115196750A (en) | Micro-aerobic MMBR sewage treatment device and treatment process thereof | |
| CN114455708A (en) | Integrated sewage treatment equipment and sewage treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210226 |
|
| RJ01 | Rejection of invention patent application after publication |