WO2021208367A1 - Two-stage sequencing batch reactor aerobic granular sludge sewage treatment process and device - Google Patents
Two-stage sequencing batch reactor aerobic granular sludge sewage treatment process and device Download PDFInfo
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- WO2021208367A1 WO2021208367A1 PCT/CN2020/117688 CN2020117688W WO2021208367A1 WO 2021208367 A1 WO2021208367 A1 WO 2021208367A1 CN 2020117688 W CN2020117688 W CN 2020117688W WO 2021208367 A1 WO2021208367 A1 WO 2021208367A1
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- the invention belongs to the technical field of rural and urban domestic sewage treatment, and particularly relates to a two-stage sequential batch reactor aerobic granular sludge sewage treatment process and equipment.
- the activated sludge method is a biological wastewater treatment technology with activated sludge microorganisms as the main body.
- the technology is to continuously mix and cultivate various microbial groups in sewage under artificially enhanced conditions to form activated sludge, and use the microorganisms in the activated sludge to decompose and remove organic pollutants in the sewage under suitable conditions. Then the sludge is separated, and the treated supernatant and excess sludge are discharged out of the system.
- SBR is the abbreviation of Sequential Batch Activated Sludge Process, which is an activated sludge process that operates in a sequence of intermittent water intake and intermittent aeration. Its main feature is orderliness and intermittent operation.
- the core of SBR technology is the SBR reaction tank, which integrates the functions of homogenization, primary sedimentation, biodegradation, and secondary sedimentation, and is completed in the pool. Processes such as water inflow, reaction, precipitation, drainage, and idleness. It is suitable for occasions with intermittent discharge and large changes in sewage flow.
- Aerobic granular sludge technology is a new type of sewage treatment technology. It has the advantages of large biomass of granular sludge, long sludge age, low residual sludge output, fast particle settling speed, efficient sewage treatment, and can withstand higher organic loads. Features such as strong impact load, strong resistance to toxic and harmful effects.
- the formation mechanism of aerobic granular sludge is complex, including physical, chemical and biological interactions. Generally, the formation process is regarded as a phenomenon of organism aggregation formed by self-aggregation of microorganisms through a variety of mechanisms (extracellular polymer, filamentous bacteria skeleton, induced condensation nucleus, cation binding) under certain conditions such as fluid mechanics and selective pressure.
- the traditional single-stage SBR granular sludge reactor has to achieve selective pressure, which often causes the problem of high SS in the effluent.
- the purpose of the present invention is to solve the above-mentioned technical problems in the prior art and provide a two-stage sequencing batch reactor aerobic granular sludge sewage treatment process and equipment, which combines aerobic granular sludge and a sequential batch activated sludge process , It has the advantages and stability of bacteria and efficiency in sewage treatment.
- the process adopts intermittent water inflow and intermittent aeration to quickly cultivate granular sludge to improve the sewage treatment efficiency and stability of the system.
- the process adopts a two-stage water-intake method to save carbon source, and at the same time solves the problem of high SS that may be produced by granular sludge due to the fast settling speed.
- the reactor has the characteristics of strong impact load resistance, high efficiency of pollutant removal, low residual sludge output, and thorough solid-liquid separation.
- the whole process does not introduce too many processing units, which not only has high processing efficiency, stable effluent up to standard, but also can control the cost at a lower level.
- the equipment has high water treatment efficiency, high water treatment effect, convenient operation and easy maintenance.
- the present invention adopts the following technical solutions:
- a two-stage sequencing batch reactor aerobic granular sludge sewage treatment process which is characterized in that it comprises the following steps:
- First-level granular sludge sewage treatment the first-level sewage raw water enters the reactor A zone, and the aerobic granular sludge is used to adsorb and degrade the organic matter of the sewage.
- the aerobic granular sludge can be stabilized and denitrification can be enhanced by adding conditioned sludge fine powder.
- activated sludge aerobic absorption of phosphorus and on the other hand, the chemical phosphorus removal effect is enhanced by the phosphorus removal composite filler in the reactor A zone, and the phosphorus removal sediment is used to induce coagulation nuclei and promote the sludge granulation process.
- the iron chelate produced by chemical phosphorus removal provides condensation nuclei, etc. to jointly promote the granulation of aerobic sludge, form and control the selective pressure, and quickly cultivate aerobic granular pollution. mud.
- aerobic granular sludge is formed with large particle size, compact structure and coexistence of multiple microorganisms.
- the particles form an aerobic, anoxic and anaerobic microenvironment from the outside to the inside to make heterotrophic bacteria, nitrifying bacteria and denitrifying bacteria, etc. Activities in their respective suitable spaces are conducive to simultaneous nitrification and denitrification and short-range nitrification and denitrification. High-efficiency treatment and fast settlement speed.
- Secondary activated sludge method sewage treatment the light floc sludge that is not easy to settle in the reactor A zone is introduced into the reactor B zone together with the mixed liquid, and the secondary sewage raw water is introduced into the reactor B zone for use To supplement the carbon source, use the sequencing batch activated sludge process in the reactor B zone to further remove nitrogen and phosphorus, and then stand for precipitation to complete the separation of sludge and supernatant.
- the granular sludge in the reactor A zone may produce high effluent SS due to the fast settling speed, while the light sludge flocs in the reactor A zone can be completely separated from the light sludge in the reactor B zone, and the sewage can be introduced into the sewage at the same time.
- the raw water is used to supplement the carbon source and save the carbon source.
- Sludge collection and drying The surplus sludge produced in zone B of the reactor is discharged to the sludge collection and drying tank through periodic sludge discharge. The surplus sludge produced in zone B of the reactor is discharged to the sludge collection and drying tank through periodic sludge discharge. The sludge collection and drying tank returns the sludge leakage to the reactor B area through the return pipe.
- the phosphorus-rich dried sludge in the sludge collection and drying tank can be cleaned and reused regularly or treated by the sludge treatment plant ( Such as: sintered ceramsite).
- step a is:
- the primary sewage raw water enters the reactor A at the bottom, and the granular sludge is quickly cultivated in the high biomass area at the bottom.
- the bottom influent promotes the sludge granulation process, which is beneficial to the rapid cultivation of aerobic granular sludge.
- Intermittent aeration Intermittent aeration to complete biological denitrification and organic matter removal. At the same time, aeration is used to form hydraulic shear to promote sludge granulation, and to speed up the chemical phosphorus removal process of phosphorus removal composite fillers, and use chemical phosphorus removal products. The resulting chelate further promotes the granulation of sludge, and the granular sludge is used to easily form aerobic-anoxic-anaerobic stratified microenvironment to realize simultaneous nitrification and denitrification.
- Control the selective pressure by controlling the selective pressure in the reactor A zone, the granular sludge with good sedimentation performance is left, and the light floc sludge that is not easy to settle is discharged into the reactor B zone together with the mixed liquid for further processing .
- the first-stage influent is fed from the bottom of the reactor A through the first inlet pipe, which is conducive to the adsorption and agglomeration of granular sludge at the bottom of the high-biomass zone, and then through the first agitator low-speed anaerobic stirring to enhance the effect of the granular sludge on the organic matter of the sewage
- the adsorption degradation, and then intermittent aeration to complete the denitrification and organic matter removal process The hydraulic shear formed by aeration is used to promote granulation, and accelerate the chemical phosphorus removal process of the phosphorus removal composite filler, and use the chelate produced by chemical phosphorus removal to further promote the granulation of sludge.
- the use of granular sludge is easy to form aerobic-anoxia-anaerobic stratified microenvironment to realize the characteristics of simultaneous nitrification and denitrification, and accelerate the degradation of organic matter.
- the purpose of high-efficiency removal of organic matter, nitrogen and phosphorus removal is achieved.
- step b is:
- Supplementary carbon source the raw sewage water is introduced into zone B of the reactor, which is stirred and homogenized by the agitator;
- the nitrate-nitrogen sewage mixed liquid in zone A of the reactor enters zone B of the reactor, and the secondary influent water is introduced into zone B of the reactor through the second water inlet pipe, and the second agitator is used for stirring and homogenization.
- the carbon source in the raw sewage water is used for denitrification to achieve the purpose of denitrification and saving carbon sources.
- the reactor B zone adopts the sequential batch activated sludge method, which integrates the functions of homogenization, primary sedimentation, biodegradation, and secondary sedimentation. In the reactor B zone, processes such as water intake, reaction, precipitation, drainage, and idleness are completed. A small amount of aeration is used to complete the gas stripping. Through the ideal standing and sedimentation process, the sludge and the supernatant are separated to ensure that the effluent SS is stable and meets the standard.
- a two-stage sequential batch reactor aerobic granular sludge sewage treatment process equipment which is characterized in that it comprises a reactor A zone and a reactor B zone, and the reactor A zone is provided with a first water inlet pipe and a first composite filler ,
- the reactor B zone is equipped with a water outlet pipe
- the reactor A zone and the reactor B zone are equipped with a connecting pipe
- the reactor A zone and the reactor B zone are both equipped with an aeration mechanism, which can conveniently and efficiently carry out sewage treatment.
- the treatment effect is good, the operation is simple, and the maintenance is easy.
- a second composite packing is provided in the B zone of the reactor.
- the second composite packing improves the dephosphorization efficiency in the B zone of the reactor.
- a second water inlet pipe is provided in the B zone of the reactor.
- the second water inlet pipe uses the raw sewage water to supplement the carbon source in the B zone of the reactor, which can save the carbon source.
- the reactor A zone is provided with a first agitator, and the first agitator low-speed anaerobic stirring enhances the adsorption and degradation of the organic matter of the sewage by the granular sludge.
- a second stirrer is provided in the B zone of the reactor, and the second stirrer stirs and homogenizes.
- sludge collection and drying tank which is connected to the reactor B zone.
- the surplus sludge produced in zone B of the reactor is discharged to the sludge collection and drying tank through periodic sludge discharge.
- the sludge collection and drying tank returns the sludge leakage to the reactor B area through the return pipe.
- the phosphorus-rich dried sludge in the sludge collection and drying tank can be cleaned and reused regularly or treated by the sludge treatment plant (such as: sintered ceramsite).
- the aeration mechanism includes an air pump, a one-way valve, an electromagnetic valve and an aeration device.
- the air pump is connected with the one-way valve
- the one-way valve is connected with the electromagnetic valve
- the electromagnetic valve is connected with the aeration device. Intermittent aeration enables efficient and rapid sewage treatment.
- Aerobic granular sludge is conducive to simultaneous nitrification and denitrification.
- the two-stage water inflow saves carbon sources and has high treatment efficiency; the sedimentation speed is fast and does not require excessively long hydraulic retention time; the long sludge age is conducive to sludge reduction;
- the reaction is an ideal push flow, and the biochemical reaction has a large thrust;
- the precipitation is an ideal static precipitation, and the solid-liquid separation effect is good;
- Figure 1 is a schematic structural diagram of a two-stage sequencing batch reactor aerobic granular sludge wastewater treatment process according to the present invention.
- FIG. 1 it is a two-stage sequencing batch reactor aerobic granular sludge wastewater treatment process of the present invention, including the following steps:
- First-level granular sludge sewage treatment The first-level sewage raw water enters the reactor A zone 1, and the aerobic granular sludge is used to adsorb and degrade the organic matter of the sewage.
- the aerobic granular sludge can be stabilized and denitrification can be enhanced by adding conditioned sludge fine powder.
- the activated sludge is used to absorb phosphorus aerobic
- the phosphorus removal composite filler in the reactor A zone 1 enhances the chemical phosphorus removal effect, and uses the phosphorus removal sediment to induce coagulation nuclei and promote the sludge granulation process.
- the iron chelate produced by chemical phosphorus removal provides condensation nuclei, etc. to jointly promote the granulation of aerobic sludge, form and control the selective pressure, and quickly cultivate aerobic granular pollution. mud.
- aerobic granular sludge is formed with large particle size, compact structure and coexistence of multiple microorganisms.
- the particles form an aerobic, anoxic and anaerobic microenvironment from the outside to the inside to make heterotrophic bacteria, nitrifying bacteria and denitrifying bacteria, etc. Activities in their respective suitable spaces are conducive to simultaneous nitrification and denitrification and short-range nitrification and denitrification. High-efficiency treatment and fast settlement speed.
- Secondary activated sludge wastewater treatment the light floc sludge that is not easy to settle in reactor A zone 1 is introduced into reactor B zone 2 together with the mixed liquid, and secondary sewage is introduced into reactor B zone 2 at the same time
- the raw water is used to supplement the carbon source, and is processed by the sequencing batch activated sludge method in the reactor B zone 2, further denitrification and phosphorus removal, and then settles down to complete the separation of sludge and supernatant.
- the granular sludge in reactor A zone 1 may produce high effluent SS due to its fast settling speed.
- the light sludge flocs in reactor A zone 1 can be completely solid-liquid separated. Then import the raw sewage water to supplement the carbon source and save the carbon source.
- Sludge collection and drying The surplus sludge produced in zone 2 of the reactor B is discharged to the sludge collection and drying tank 12 through periodic sludge discharge.
- the sludge collection and drying tank 12 returns the sludge leakage to the reactor B zone 2 through the return pipe.
- the phosphorus-rich dried sludge in the sludge collection and drying tank can be cleaned and reused regularly or used by the sludge treatment plant Treatment (such as: sintered ceramsite).
- the primary sewage raw water enters at the bottom of the reactor A zone 1, where the granular sludge is cultivated in the high biomass area at the bottom, and the bottom influent promotes the process of sludge granulation, which is beneficial to the rapid cultivation of aerobic granular sludge.
- Intermittent aeration Intermittent aeration to complete biological denitrification and organic matter removal. At the same time, aeration is used to form hydraulic shear to promote sludge granulation, and to speed up the chemical phosphorus removal process of phosphorus removal composite fillers, and use chemical phosphorus removal products. The resulting chelate further promotes the granulation of sludge, and the granular sludge is used to easily form aerobic-anoxic-anaerobic stratified microenvironment to realize simultaneous nitrification and denitrification.
- Control the selective pressure by controlling the selective pressure in the reactor A zone 1, the granular sludge with good sedimentation performance is left, and the light floc sludge that is not easy to settle is discharged into the reactor B zone 2 together with the mixed liquid. Further processing.
- the first-stage influent is fed from the bottom of the reactor A zone 1 through the first inlet pipe 3, which is conducive to the adsorption and condensation of granular sludge in the high biomass area at the bottom, and then the first agitator 10 low-speed anaerobic stirring to enhance the granular sludge Adsorption and degradation of organic matter in sewage, and then intermittent aeration to complete the process of denitrification and organic matter removal.
- the hydraulic shear formed by aeration is used to promote granulation, and accelerate the chemical phosphorus removal process of the phosphorus removal composite filler, and use the chelate produced by chemical phosphorus removal to further promote the granulation of sludge.
- Inlet water the light floc sludge that is not easy to settle in the reactor A zone 1 is introduced into the reactor B zone 2 together with the mixed liquid;
- Supplementary carbon source Introduce raw sewage water into reactor B zone 2, and stir and homogenize by agitator;
- the mixed solution of sewage with nitrate nitrogen in zone 1 of reactor A enters zone 2 of reactor B, and the secondary influent water is introduced into zone 2 of reactor B through the second inlet pipe 9, and the second agitator 11 performs stirring and homogenization.
- the carbon source in the raw sewage water is used for denitrification to achieve the purpose of denitrification and saving carbon sources.
- Reactor B zone 2 adopts the sequential batch activated sludge method, which integrates the functions of homogenization, primary sedimentation, biodegradation, and secondary sedimentation.
- reactor B zone 2 water intake, reaction, precipitation, drainage, and idleness are completed.
- a small amount of aeration is used to complete the gas stripping. Through the ideal standing and sedimentation process, the sludge and the supernatant are separated to ensure that the effluent SS is stable and meets the standard.
- a two-stage sequential batch reactor aerobic granular sludge sewage treatment process equipment including reactor A zone 1 and reactor B zone 2, reactor A zone 1 is provided with a first water inlet pipe 3 and a first composite packing 4.
- Reactor B zone 2 is equipped with a water outlet pipe 5, reactor A zone 1 and reactor B zone 2 are provided with a connecting pipe 6, and reactor A zone 1 and reactor B zone 2 are both equipped with aeration mechanisms. Sewage treatment can be carried out conveniently and efficiently, with good treatment effect, simple operation and easy maintenance.
- the reactor B zone 2 is provided with a second composite packing 8.
- the second composite packing 8 improves the dephosphorization efficiency in the B zone 2 of the reactor.
- the reactor B zone 2 is provided with a second water inlet pipe 9.
- the second water inlet pipe 9 uses the raw sewage water to supplement the carbon source in the reactor B zone 2, which can save the carbon source.
- the reactor A zone 1 is provided with a first agitator 10, the first agitator 10 low-speed anaerobic stirring enhances the adsorption and degradation of the organic matter of the sewage by the granular sludge.
- the reactor B zone 2 is provided with a second stirrer 11, which stirs and homogenizes.
- the surplus sludge produced in zone 2 of the reactor B is discharged to the sludge collection and drying tank 12 through periodic sludge discharge.
- the sludge collection and drying tank 12 returns the sludge leakage to the reactor B zone 2 through the return pipe.
- the phosphorus-rich dried sludge in the sludge collection and drying tank 12 can be cleaned and reused regularly or from the sludge.
- Treatment plant (such as: sintered ceramsite).
- the aeration mechanism includes an air pump 13, a one-way valve 14, a solenoid valve 15, and an aeration device 7.
- the air pump 13 is connected to the one-way valve 14, the one-way valve 14 is connected to the solenoid valve 15, and the solenoid valve 15 is connected to the aeration device 7. Phase connection. Intermittent aeration enables efficient and rapid sewage treatment.
- Aerobic granular sludge is conducive to simultaneous nitrification and denitrification.
- the two-stage water inflow saves carbon sources and has high treatment efficiency; the sedimentation speed is fast and does not require excessively long hydraulic retention time; the long sludge age is conducive to sludge reduction;
- the reaction is an ideal push flow, and the biochemical reaction has a large thrust;
- the precipitation is an ideal static precipitation, and the solid-liquid separation effect is good;
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Abstract
A two-stage sequencing batch reactor aerobic granular sludge sewage treatment process, comprising the following steps: a. primary granular sludge sewage treatment: feeding primary sewage raw water into a zone A (1) of a reactor, and performing adsorptive degradation on sewage organic matter using aerobic granular sludge; b. sewage treatment using a secondary activated sludge process: introducing light flocculent sludge which is unlikely to settle in a zone A (1) of a reactor together with a mixed liquid into a zone B (2) of the reactor, introducing secondary sewage raw water into the zone B (2) of the reactor for supplementing a carbon source at the same time, using a sequencing batch reactor activated sludge process in the zone B (2) of the reactor for treatment, performing further denitrification and dephosphorization, and then standing for precipitation to achieve separation of sludge and a supernatant; and c. sludge collection and drying: discharging the residual sludge produced in the zone B (2) of the reactor to a sludge collection and drying tank by means of periodic sludge discharge. Also disclosed is a two-stage sequencing batch reactor aerobic granular sludge sewage treatment device.
Description
本发明属于农村和城镇生活污水处理技术领域,尤其涉及一种两级序批式反应器好氧颗粒污泥污水处理工艺及设备。The invention belongs to the technical field of rural and urban domestic sewage treatment, and particularly relates to a two-stage sequential batch reactor aerobic granular sludge sewage treatment process and equipment.
在农村污水处理领域,农村污水具有低碳、高氮磷、流量变化大等特征,这些特征制约着农村污水处理的难度和成本。活性污泥法是一种以活性污泥微生物为主体的废水生物处理技术。该技术是在人工强化条件下,对污水中各种微生物群体进行连续混合培养,形成活性污泥,利用活性污泥中的微生物在适宜条件下分解去除污水中的有机污染物。然后泥水分离,将处理后的上清液和多余污泥排出系统。SBR是序批式活性污泥法的简称,是一种按序列间歇进水、间歇曝气方式运行的活性污泥法。它的主要特征是在运行操作上的有序性和间歇性,SBR技术的核心是SBR反应池,该池集均化、初沉、生物降解、二沉等功能于一体,在该池中完成进水、反应、沉淀、排水、闲置等工序。适用于间歇排放和污水流量变化较大的场合。In the field of rural sewage treatment, rural sewage has the characteristics of low carbon, high nitrogen and phosphorus, and large flow changes, which restrict the difficulty and cost of rural sewage treatment. The activated sludge method is a biological wastewater treatment technology with activated sludge microorganisms as the main body. The technology is to continuously mix and cultivate various microbial groups in sewage under artificially enhanced conditions to form activated sludge, and use the microorganisms in the activated sludge to decompose and remove organic pollutants in the sewage under suitable conditions. Then the sludge is separated, and the treated supernatant and excess sludge are discharged out of the system. SBR is the abbreviation of Sequential Batch Activated Sludge Process, which is an activated sludge process that operates in a sequence of intermittent water intake and intermittent aeration. Its main feature is orderliness and intermittent operation. The core of SBR technology is the SBR reaction tank, which integrates the functions of homogenization, primary sedimentation, biodegradation, and secondary sedimentation, and is completed in the pool. Processes such as water inflow, reaction, precipitation, drainage, and idleness. It is suitable for occasions with intermittent discharge and large changes in sewage flow.
好氧颗粒污泥技术是一种新型污水处理技术,具有颗粒污泥生物量大、污泥龄长,剩余污泥产量低、颗粒沉降速度快、污水处理高效、可承受较高有机负荷、抗冲击负荷强、耐有毒有害性强等特征。好氧颗粒污泥形成机理复杂,包含物理、化学和生物等相互作用。一般形成过程看作是在一定流体力学、选择压等条件下,微生物通过多种机理(胞外多聚物、丝状菌骨架、诱导凝结核、阳离子结合)自凝聚形成的生物体聚集现象。Aerobic granular sludge technology is a new type of sewage treatment technology. It has the advantages of large biomass of granular sludge, long sludge age, low residual sludge output, fast particle settling speed, efficient sewage treatment, and can withstand higher organic loads. Features such as strong impact load, strong resistance to toxic and harmful effects. The formation mechanism of aerobic granular sludge is complex, including physical, chemical and biological interactions. Generally, the formation process is regarded as a phenomenon of organism aggregation formed by self-aggregation of microorganisms through a variety of mechanisms (extracellular polymer, filamentous bacteria skeleton, induced condensation nucleus, cation binding) under certain conditions such as fluid mechanics and selective pressure.
传统单级SBR颗粒污泥反应器要实现选择压,往往会造成出水SS高的问题。The traditional single-stage SBR granular sludge reactor has to achieve selective pressure, which often causes the problem of high SS in the effluent.
发明内容Summary of the invention
本发明目的在于解决现有技术中存在的上述技术问题,提供一种两级序批 式反应器好氧颗粒污泥污水处理工艺及设备,结合好氧颗粒污泥和序批式活性污泥法,兼具污水处理上的菌种、效率等方面的优势和稳定性,该工艺采用间歇进水、间歇曝气方式快速培养出颗粒污泥,提高系统的污水处理效率和稳定性。该工艺采用两级分段进水方式节省碳源,同时解决颗粒污泥因沉降速度快而可能产生的出水SS高的问题。确保反应器具有较强的耐冲击负荷、污染物去除高效、剩余污泥产量低、固液分离彻底等特征。整套工艺不引入过多处理单元,既处理高效、出水稳定达标,又可控制成本在较低水平。设备水处理效率高,水处理效果高,运行方便,便于维护。The purpose of the present invention is to solve the above-mentioned technical problems in the prior art and provide a two-stage sequencing batch reactor aerobic granular sludge sewage treatment process and equipment, which combines aerobic granular sludge and a sequential batch activated sludge process , It has the advantages and stability of bacteria and efficiency in sewage treatment. The process adopts intermittent water inflow and intermittent aeration to quickly cultivate granular sludge to improve the sewage treatment efficiency and stability of the system. The process adopts a two-stage water-intake method to save carbon source, and at the same time solves the problem of high SS that may be produced by granular sludge due to the fast settling speed. Ensure that the reactor has the characteristics of strong impact load resistance, high efficiency of pollutant removal, low residual sludge output, and thorough solid-liquid separation. The whole process does not introduce too many processing units, which not only has high processing efficiency, stable effluent up to standard, but also can control the cost at a lower level. The equipment has high water treatment efficiency, high water treatment effect, convenient operation and easy maintenance.
为了解决上述技术问题,本发明采用如下技术方案:In order to solve the above technical problems, the present invention adopts the following technical solutions:
一种两级序批式反应器好氧颗粒污泥污水处理工艺,其特征在于包括如下步骤:A two-stage sequencing batch reactor aerobic granular sludge sewage treatment process, which is characterized in that it comprises the following steps:
a、一级颗粒污泥污水处理:一级污水原水进入反应器A区,利用好氧颗粒污泥对污水有机质吸附降解。可通过投加调理后的污泥微粉维持好氧颗粒污泥稳定及强化脱氮。一方面通过活性污泥好氧吸磷,另一方面通过反应器A区内的除磷复合填料强化化学除磷效果,并利用除磷沉淀物为诱导凝结核,促进污泥颗粒化进程。如:利用化学除磷产生的铁螯合物(微生物群感效应、细胞信号分子学)提供凝结核等共同促进好氧污泥的颗粒化,形成并控制选择压,快速培养出好氧颗粒污泥。通过该方式形成好氧颗粒污泥粒径大、结构密实且多种微生物共存,颗粒由外到内形成好氧、缺氧、厌氧微环境,使异养菌、硝化菌和反硝化菌等在各自适宜空间活动,有利于实现同步硝化反硝化和短程硝化反硝化。处理高效、沉降速度快。a. First-level granular sludge sewage treatment: the first-level sewage raw water enters the reactor A zone, and the aerobic granular sludge is used to adsorb and degrade the organic matter of the sewage. The aerobic granular sludge can be stabilized and denitrification can be enhanced by adding conditioned sludge fine powder. On the one hand, activated sludge aerobic absorption of phosphorus, and on the other hand, the chemical phosphorus removal effect is enhanced by the phosphorus removal composite filler in the reactor A zone, and the phosphorus removal sediment is used to induce coagulation nuclei and promote the sludge granulation process. For example, the iron chelate produced by chemical phosphorus removal (microbial population sensing effect, cell signaling molecule) provides condensation nuclei, etc. to jointly promote the granulation of aerobic sludge, form and control the selective pressure, and quickly cultivate aerobic granular pollution. mud. In this way, aerobic granular sludge is formed with large particle size, compact structure and coexistence of multiple microorganisms. The particles form an aerobic, anoxic and anaerobic microenvironment from the outside to the inside to make heterotrophic bacteria, nitrifying bacteria and denitrifying bacteria, etc. Activities in their respective suitable spaces are conducive to simultaneous nitrification and denitrification and short-range nitrification and denitrification. High-efficiency treatment and fast settlement speed.
b、二级活性污泥法污水处理:将反应器A区中不易沉降的轻质絮体污泥同混合液一起导入反应器B区,同时在反应器B区中导入二级污水原水用于补充碳源,在反应器B区中采用序批式活性污泥法处理,进一步的脱氮除磷,之后静置沉淀,完成污泥和上清液的分离。反应器A区中的颗粒污泥因沉降速度快而可能产生的出水SS高,而反应器B区中能将反应器A区中的轻质污泥絮体彻底固液分离,同时再导入污水原水用于补充碳源,节省碳源。b. Secondary activated sludge method sewage treatment: the light floc sludge that is not easy to settle in the reactor A zone is introduced into the reactor B zone together with the mixed liquid, and the secondary sewage raw water is introduced into the reactor B zone for use To supplement the carbon source, use the sequencing batch activated sludge process in the reactor B zone to further remove nitrogen and phosphorus, and then stand for precipitation to complete the separation of sludge and supernatant. The granular sludge in the reactor A zone may produce high effluent SS due to the fast settling speed, while the light sludge flocs in the reactor A zone can be completely separated from the light sludge in the reactor B zone, and the sewage can be introduced into the sewage at the same time. The raw water is used to supplement the carbon source and save the carbon source.
c、污泥收集干化:反应器B区产生的剩余污泥通过周期性的排泥排出至污泥收集干化池。反应器B区产生的剩余污泥通过周期性的排泥排出到污泥收集干化池。污泥收集干化池通过回流管将污泥渗漏液回流到反应器B区,污泥收集干化池内富含磷的干化污泥,可定期清理回用或由污泥处理厂处理(如:烧结陶粒)。c. Sludge collection and drying: The surplus sludge produced in zone B of the reactor is discharged to the sludge collection and drying tank through periodic sludge discharge. The surplus sludge produced in zone B of the reactor is discharged to the sludge collection and drying tank through periodic sludge discharge. The sludge collection and drying tank returns the sludge leakage to the reactor B area through the return pipe. The phosphorus-rich dried sludge in the sludge collection and drying tank can be cleaned and reused regularly or treated by the sludge treatment plant ( Such as: sintered ceramsite).
进一步,步骤a的详细步骤为:Further, the detailed steps of step a are:
1、一级污水原水在底部进水至反应器A区,在底部高生物量区快速培养颗粒污泥,底部进水促进污泥颗粒化进程,有利于快速培养出好氧颗粒污泥。1. The primary sewage raw water enters the reactor A at the bottom, and the granular sludge is quickly cultivated in the high biomass area at the bottom. The bottom influent promotes the sludge granulation process, which is beneficial to the rapid cultivation of aerobic granular sludge.
2、搅拌:通过搅拌器均化,增强颗粒污泥对污水有机质的吸附降解;2. Stirring: homogenize with agitator to enhance the adsorption and degradation of organic matter in sewage by granular sludge;
3、间歇曝气:间歇性曝气,完成生物脱氮和有机物去除,同时利用曝气形成水力剪切促进污泥颗粒化,并加快除磷复合填料的化学除磷进程,利用化学除磷产出的螯合物进一步促进污泥的颗粒化,利用颗粒污泥易于形成好氧-缺氧-厌氧分层微环境而实现同步硝化反硝化。3. Intermittent aeration: Intermittent aeration to complete biological denitrification and organic matter removal. At the same time, aeration is used to form hydraulic shear to promote sludge granulation, and to speed up the chemical phosphorus removal process of phosphorus removal composite fillers, and use chemical phosphorus removal products. The resulting chelate further promotes the granulation of sludge, and the granular sludge is used to easily form aerobic-anoxic-anaerobic stratified microenvironment to realize simultaneous nitrification and denitrification.
4、控制选择压:在反应器A区通过控制选择压,将沉降性能好的颗粒污泥留下,将不易沉降的轻质絮体污泥同混合液一起排入到反应器B区进一步处理。4. Control the selective pressure: by controlling the selective pressure in the reactor A zone, the granular sludge with good sedimentation performance is left, and the light floc sludge that is not easy to settle is discharged into the reactor B zone together with the mixed liquid for further processing .
一级进水通过第一进水管从反应器A区的底部进水,利于在底部高生物量区吸附凝聚出颗粒污泥,之后通过第一搅拌器低速厌氧搅拌增强颗粒污泥对污水有机质的吸附降解,然后间歇性曝气完成脱氮和有机物去除过程。利用曝气形成的水力剪切促进颗粒化,并加快除磷复合填料的化学除磷进程,并利用化学除磷产出的螯合物进一步促进污泥的颗粒化。利用颗粒污泥易于形成好氧-缺氧-厌氧分层微环境而实现同步硝化反硝化的特征,加快有机物降解。在反应器A区较短的水力停留情况下,达到高效去除有机物、脱氮除磷的目的。在反应器A区通过控制选择压,将沉降性能好的颗粒污泥留下,将不易沉降的絮状污泥同混合液一起通过连接管进入反应器B区。The first-stage influent is fed from the bottom of the reactor A through the first inlet pipe, which is conducive to the adsorption and agglomeration of granular sludge at the bottom of the high-biomass zone, and then through the first agitator low-speed anaerobic stirring to enhance the effect of the granular sludge on the organic matter of the sewage The adsorption degradation, and then intermittent aeration to complete the denitrification and organic matter removal process. The hydraulic shear formed by aeration is used to promote granulation, and accelerate the chemical phosphorus removal process of the phosphorus removal composite filler, and use the chelate produced by chemical phosphorus removal to further promote the granulation of sludge. The use of granular sludge is easy to form aerobic-anoxia-anaerobic stratified microenvironment to realize the characteristics of simultaneous nitrification and denitrification, and accelerate the degradation of organic matter. In the case of shorter hydraulic retention in the reactor A zone, the purpose of high-efficiency removal of organic matter, nitrogen and phosphorus removal is achieved. By controlling the selective pressure in the reactor A zone, the granular sludge with good sedimentation performance is left, and the flocculent sludge that is not easy to settle together with the mixed liquid enters the reactor B zone through the connecting pipe.
进一步,步骤b的详细步骤为:Further, the detailed steps of step b are:
1、进水:将反应器A区的不易沉降的轻质絮体污泥同混合液一起导入至反应器B区;1. Water inlet: the light floc sludge that is not easy to settle in zone A of the reactor is introduced into zone B of the reactor together with the mixed liquid;
2、补充碳源:将污水原水引入反应器B区,由搅拌器进行搅拌均化;2. Supplementary carbon source: the raw sewage water is introduced into zone B of the reactor, which is stirred and homogenized by the agitator;
3、反应:间歇性曝气,分阶段完成反硝化、硝化、二次反硝化等过程;3. Reaction: intermittent aeration, complete denitrification, nitrification, secondary denitrification and other processes in stages;
4、静置:静置沉淀,污泥和上清液分离。4. Stand still: stand still to settle, sludge and supernatant are separated.
反应器A区带硝态氮污水混合液进入反应器B区,二级进水通过第二进水管将污水原水导入反应器B区,由第二搅拌器进行搅拌均化。利用污水原水中的碳源进行反硝化,实现脱氮并节省碳源的目的。反应器B区采用序批式活性污泥法,集均化、初沉、生物降解、二沉等功能于一体,在反应器B区中完成进水、反应、沉淀、排水、闲置等工序。通过少量曝气完成气体吹脱,通过理想的静置沉淀过程,实现污泥和上清液的分离,确保出水SS的稳定达标。The nitrate-nitrogen sewage mixed liquid in zone A of the reactor enters zone B of the reactor, and the secondary influent water is introduced into zone B of the reactor through the second water inlet pipe, and the second agitator is used for stirring and homogenization. The carbon source in the raw sewage water is used for denitrification to achieve the purpose of denitrification and saving carbon sources. The reactor B zone adopts the sequential batch activated sludge method, which integrates the functions of homogenization, primary sedimentation, biodegradation, and secondary sedimentation. In the reactor B zone, processes such as water intake, reaction, precipitation, drainage, and idleness are completed. A small amount of aeration is used to complete the gas stripping. Through the ideal standing and sedimentation process, the sludge and the supernatant are separated to ensure that the effluent SS is stable and meets the standard.
一种两级序批式反应器好氧颗粒污泥污水处理工艺的设备,其特征在于:包括反应器A区和反应器B区,反应器A区设有第一进水管和第一复合填料,反应器B区设有出水管,反应器A区和反应器B区之间设有连接管,反应器A区和反应器B区均设有曝气机构,能够便捷高效的进行污水处理,处理效果好,运行简单,便于维护。A two-stage sequential batch reactor aerobic granular sludge sewage treatment process equipment, which is characterized in that it comprises a reactor A zone and a reactor B zone, and the reactor A zone is provided with a first water inlet pipe and a first composite filler , The reactor B zone is equipped with a water outlet pipe, the reactor A zone and the reactor B zone are equipped with a connecting pipe, and the reactor A zone and the reactor B zone are both equipped with an aeration mechanism, which can conveniently and efficiently carry out sewage treatment. The treatment effect is good, the operation is simple, and the maintenance is easy.
进一步,反应器B区设有第二复合填料。通过第二复合填料提高反应器B区中的脱磷效率。Further, a second composite packing is provided in the B zone of the reactor. The second composite packing improves the dephosphorization efficiency in the B zone of the reactor.
进一步,反应器B区设有第二进水管。第二进水管利用污水原水用于补充反应器B区中的碳源,能够节省碳源。Furthermore, a second water inlet pipe is provided in the B zone of the reactor. The second water inlet pipe uses the raw sewage water to supplement the carbon source in the B zone of the reactor, which can save the carbon source.
进一步,反应器A区设有第一搅拌器,第一搅拌器低速厌氧搅拌增强颗粒污泥对污水有机质的吸附降解。Furthermore, the reactor A zone is provided with a first agitator, and the first agitator low-speed anaerobic stirring enhances the adsorption and degradation of the organic matter of the sewage by the granular sludge.
进一步,反应器B区设有第二搅拌器,第二搅拌器搅拌均化。Further, a second stirrer is provided in the B zone of the reactor, and the second stirrer stirs and homogenizes.
进一步,还包括污泥收集干化池,污泥干化池与反应器B区相连接。反应器B区产生的剩余污泥通过周期性的排泥排出到污泥收集干化池。污泥收集干化池通过回流管将污泥渗漏液回流到反应器B区,污泥收集干化池内富含磷的干化污泥,可定期清理回用或由污泥处理厂处理(如:烧结陶粒)。Furthermore, it also includes a sludge collection and drying tank, which is connected to the reactor B zone. The surplus sludge produced in zone B of the reactor is discharged to the sludge collection and drying tank through periodic sludge discharge. The sludge collection and drying tank returns the sludge leakage to the reactor B area through the return pipe. The phosphorus-rich dried sludge in the sludge collection and drying tank can be cleaned and reused regularly or treated by the sludge treatment plant ( Such as: sintered ceramsite).
进一步,曝气机构包括气泵、单向阀、电磁阀和曝气装置,气泵与单向阀相连接,单向阀与电磁阀相连接,电磁阀与曝气装置相连接。间歇性曝气,实 现高效快速的污水处理。Further, the aeration mechanism includes an air pump, a one-way valve, an electromagnetic valve and an aeration device. The air pump is connected with the one-way valve, the one-way valve is connected with the electromagnetic valve, and the electromagnetic valve is connected with the aeration device. Intermittent aeration enables efficient and rapid sewage treatment.
本发明由于采用了上述技术方案,具有以下有益效果:The present invention has the following beneficial effects due to the adoption of the above technical scheme:
1)采用底部进水方式,促进污泥颗粒化进程,有利于快速培养出好氧颗粒污泥;1) Adopt the bottom water inlet method to promote the sludge granulation process, which is conducive to the rapid cultivation of aerobic granular sludge;
2)好氧颗粒污泥利于实现同步硝化反硝化,两级进水节省碳源且处理高效;沉降速度快,不需过长的水力停留时间;污泥龄长、有利于污泥减量;2) Aerobic granular sludge is conducive to simultaneous nitrification and denitrification. The two-stage water inflow saves carbon sources and has high treatment efficiency; the sedimentation speed is fast and does not require excessively long hydraulic retention time; the long sludge age is conducive to sludge reduction;
3)时间上反应为理想推流,生化反应推力大;沉淀为理想静置沉淀,固液分离效果好;3) In terms of time, the reaction is an ideal push flow, and the biochemical reaction has a large thrust; the precipitation is an ideal static precipitation, and the solid-liquid separation effect is good;
4)间歇式运行,能耗省;运行方式灵活,脱氮效果好;4) Intermittent operation, low energy consumption; flexible operation mode, good denitrification effect;
5)交替厌氧-缺氧-好氧环境,有效防止污泥膨胀;5) Alternating anaerobic-anoxic-aerobic environment can effectively prevent sludge expansion;
6)耐冲击负荷,反应池微生物活性高,污水处理能力强;6) Impact load resistance, high microbial activity in the reaction tank, and strong sewage treatment capacity;
7)设施占地面积小,工艺简单灵活。7) The facility occupies a small area and the process is simple and flexible.
下面结合附图对本发明作进一步说明:The present invention will be further explained below in conjunction with the drawings:
图1为本发明一种两级序批式反应器好氧颗粒污泥污水处理工艺的结构示意图。Figure 1 is a schematic structural diagram of a two-stage sequencing batch reactor aerobic granular sludge wastewater treatment process according to the present invention.
图中,1-反应器A区;2-反应器B区;3-第一进水管;4-第一复合填料;5-出水管;6-连接管;7-曝气装置;8-第二复合填料;9-第二进水管;10-第一搅拌器;11-第二搅拌器;12-污泥收集干化池;13-气泵;14-单向阀;15-电磁阀。In the figure, 1- reactor A zone; 2- reactor B zone; 3- first water inlet pipe; 4- first composite packing; 5- water outlet pipe; 6-connecting pipe; 7-aeration device; 8-th Two composite packing; 9-second water inlet pipe; 10-first agitator; 11-second agitator; 12-sludge collection and drying tank; 13-air pump; 14-one-way valve; 15-solenoid valve.
如图1所示,为本发明一种两级序批式反应器好氧颗粒污泥污水处理工艺,包括如下步骤:As shown in Figure 1, it is a two-stage sequencing batch reactor aerobic granular sludge wastewater treatment process of the present invention, including the following steps:
a、一级颗粒污泥污水处理:一级污水原水进入反应器A区1,利用好氧颗粒污泥对污水有机质吸附降解。可通过投加调理后的污泥微粉维持好氧颗粒污泥稳定及强化脱氮。一方面通过活性污泥好氧吸磷,另一方面通过反应器A区1 内的除磷复合填料强化化学除磷效果,并利用除磷沉淀物为诱导凝结核,促进污泥颗粒化进程。如:利用化学除磷产生的铁螯合物(微生物群感效应、细胞信号分子学)提供凝结核等共同促进好氧污泥的颗粒化,形成并控制选择压,快速培养出好氧颗粒污泥。通过该方式形成好氧颗粒污泥粒径大、结构密实且多种微生物共存,颗粒由外到内形成好氧、缺氧、厌氧微环境,使异养菌、硝化菌和反硝化菌等在各自适宜空间活动,有利于实现同步硝化反硝化和短程硝化反硝化。处理高效、沉降速度快。a. First-level granular sludge sewage treatment: The first-level sewage raw water enters the reactor A zone 1, and the aerobic granular sludge is used to adsorb and degrade the organic matter of the sewage. The aerobic granular sludge can be stabilized and denitrification can be enhanced by adding conditioned sludge fine powder. On the one hand, the activated sludge is used to absorb phosphorus aerobic, on the other hand, the phosphorus removal composite filler in the reactor A zone 1 enhances the chemical phosphorus removal effect, and uses the phosphorus removal sediment to induce coagulation nuclei and promote the sludge granulation process. For example, the iron chelate produced by chemical phosphorus removal (microbial population sensing effect, cell signaling molecule) provides condensation nuclei, etc. to jointly promote the granulation of aerobic sludge, form and control the selective pressure, and quickly cultivate aerobic granular pollution. mud. In this way, aerobic granular sludge is formed with large particle size, compact structure and coexistence of multiple microorganisms. The particles form an aerobic, anoxic and anaerobic microenvironment from the outside to the inside to make heterotrophic bacteria, nitrifying bacteria and denitrifying bacteria, etc. Activities in their respective suitable spaces are conducive to simultaneous nitrification and denitrification and short-range nitrification and denitrification. High-efficiency treatment and fast settlement speed.
b、二级活性污泥法污水处理:将反应器A区1中不易沉降的轻质絮体污泥同混合液一起导入反应器B区2,同时在反应器B区2中导入二级污水原水用于补充碳源,在反应器B区2中采用序批式活性污泥法处理,进一步的脱氮除磷,之后静置沉淀,完成污泥和上清液的分离。反应器A区1中的颗粒污泥因沉降速度快而可能产生的出水SS高,而反应器B区2中能将反应器A区1中的轻质污泥絮体彻底固液分离,同时再导入污水原水用于补充碳源,节省碳源。b. Secondary activated sludge wastewater treatment: the light floc sludge that is not easy to settle in reactor A zone 1 is introduced into reactor B zone 2 together with the mixed liquid, and secondary sewage is introduced into reactor B zone 2 at the same time The raw water is used to supplement the carbon source, and is processed by the sequencing batch activated sludge method in the reactor B zone 2, further denitrification and phosphorus removal, and then settles down to complete the separation of sludge and supernatant. The granular sludge in reactor A zone 1 may produce high effluent SS due to its fast settling speed. In reactor B zone 2, the light sludge flocs in reactor A zone 1 can be completely solid-liquid separated. Then import the raw sewage water to supplement the carbon source and save the carbon source.
c、污泥收集干化:反应器B区2产生的剩余污泥通过周期性的排泥排出至污泥收集干化池12。污泥收集干化池12通过回流管将污泥渗漏液回流到反应器B区2,污泥收集干化池内富含磷的干化污泥,可定期清理回用或由污泥处理厂处理(如:烧结陶粒)。c. Sludge collection and drying: The surplus sludge produced in zone 2 of the reactor B is discharged to the sludge collection and drying tank 12 through periodic sludge discharge. The sludge collection and drying tank 12 returns the sludge leakage to the reactor B zone 2 through the return pipe. The phosphorus-rich dried sludge in the sludge collection and drying tank can be cleaned and reused regularly or used by the sludge treatment plant Treatment (such as: sintered ceramsite).
步骤a的详细步骤为:The detailed steps of step a are:
1、一级污水原水在底部进水至反应器A区1,在底部高生物量区培养颗粒污泥,底部进水促进污泥颗粒化进程,有利于快速培养出好氧颗粒污泥。1. The primary sewage raw water enters at the bottom of the reactor A zone 1, where the granular sludge is cultivated in the high biomass area at the bottom, and the bottom influent promotes the process of sludge granulation, which is beneficial to the rapid cultivation of aerobic granular sludge.
2、搅拌:通过搅拌器均化,增强颗粒污泥对污水有机质的吸附降解;2. Stirring: homogenize with agitator to enhance the adsorption and degradation of organic matter in sewage by granular sludge;
3、间歇曝气:间歇性曝气,完成生物脱氮和有机物去除,同时利用曝气形成水力剪切促进污泥颗粒化,并加快除磷复合填料的化学除磷进程,利用化学除磷产出的螯合物进一步促进污泥的颗粒化,利用颗粒污泥易于形成好氧-缺氧-厌氧分层微环境而实现同步硝化反硝化。3. Intermittent aeration: Intermittent aeration to complete biological denitrification and organic matter removal. At the same time, aeration is used to form hydraulic shear to promote sludge granulation, and to speed up the chemical phosphorus removal process of phosphorus removal composite fillers, and use chemical phosphorus removal products. The resulting chelate further promotes the granulation of sludge, and the granular sludge is used to easily form aerobic-anoxic-anaerobic stratified microenvironment to realize simultaneous nitrification and denitrification.
4、控制选择压:在反应器A区1通过控制选择压,将沉降性能好的颗粒污泥留下,将不易沉降的轻质絮体污泥同混合液一起排入到反应器B区2进一步 处理。4. Control the selective pressure: by controlling the selective pressure in the reactor A zone 1, the granular sludge with good sedimentation performance is left, and the light floc sludge that is not easy to settle is discharged into the reactor B zone 2 together with the mixed liquid. Further processing.
一级进水通过第一进水管3从反应器A区1的底部进水,利于在底部高生物量区吸附凝聚出颗粒污泥,之后通过第一搅拌器10低速厌氧搅拌增强颗粒污泥对污水有机质的吸附降解,然后间歇性曝气完成脱氮和有机物去除过程。利用曝气形成的水力剪切促进颗粒化,并加快除磷复合填料的化学除磷进程,并利用化学除磷产出的螯合物进一步促进污泥的颗粒化。利用颗粒污泥易于形成好氧-缺氧-厌氧分层微环境而实现同步硝化反硝化的特征,加快有机物降解。在反应器A区1较短的水力停留情况下,达到高效去除有机物、脱氮除磷的目的。在反应器A区1通过控制选择压,将沉降性能好的颗粒污泥留下,将不易沉降的絮状污泥同混合液一起通过连接管进入反应器B区2。The first-stage influent is fed from the bottom of the reactor A zone 1 through the first inlet pipe 3, which is conducive to the adsorption and condensation of granular sludge in the high biomass area at the bottom, and then the first agitator 10 low-speed anaerobic stirring to enhance the granular sludge Adsorption and degradation of organic matter in sewage, and then intermittent aeration to complete the process of denitrification and organic matter removal. The hydraulic shear formed by aeration is used to promote granulation, and accelerate the chemical phosphorus removal process of the phosphorus removal composite filler, and use the chelate produced by chemical phosphorus removal to further promote the granulation of sludge. The use of granular sludge is easy to form aerobic-anoxia-anaerobic stratified microenvironment to realize the characteristics of simultaneous nitrification and denitrification, and accelerate the degradation of organic matter. In the case of shorter hydraulic retention in zone 1 of reactor A, the purpose of high-efficiency removal of organic matter, nitrogen and phosphorus removal is achieved. By controlling the selective pressure in the reactor A zone 1, the granular sludge with good sedimentation performance is left, and the flocculent sludge that is not easy to settle together with the mixed liquid enters the reactor B zone 2 through the connecting pipe.
步骤b的详细步骤为:The detailed steps of step b are:
1、进水:将反应器A区1的不易沉降的轻质絮体污泥同混合液一起导入至反应器B区2;1. Inlet water: the light floc sludge that is not easy to settle in the reactor A zone 1 is introduced into the reactor B zone 2 together with the mixed liquid;
2、补充碳源:将污水原水引入反应器B区2,由搅拌器进行搅拌均化;2. Supplementary carbon source: Introduce raw sewage water into reactor B zone 2, and stir and homogenize by agitator;
3、反应:间歇性曝气,分阶段完成反硝化、硝化、二次反硝化;3. Reaction: intermittent aeration to complete denitrification, nitrification and secondary denitrification in stages;
4、静置:静置沉淀,污泥和上清液分离。4. Stand still: stand still to settle, sludge and supernatant are separated.
反应器A区1带硝态氮污水混合液进入反应器B区2,二级进水通过第二进水管9将污水原水导入反应器B区2,由第二搅拌器11进行搅拌均化。利用污水原水中的碳源进行反硝化,实现脱氮并节省碳源的目的。反应器B区2采用序批式活性污泥法,集均化、初沉、生物降解、二沉等功能于一体,在反应器B区2中完成进水、反应、沉淀、排水、闲置等工序。通过少量曝气完成气体吹脱,通过理想的静置沉淀过程,实现污泥和上清液的分离,确保出水SS的稳定达标。The mixed solution of sewage with nitrate nitrogen in zone 1 of reactor A enters zone 2 of reactor B, and the secondary influent water is introduced into zone 2 of reactor B through the second inlet pipe 9, and the second agitator 11 performs stirring and homogenization. The carbon source in the raw sewage water is used for denitrification to achieve the purpose of denitrification and saving carbon sources. Reactor B zone 2 adopts the sequential batch activated sludge method, which integrates the functions of homogenization, primary sedimentation, biodegradation, and secondary sedimentation. In reactor B zone 2, water intake, reaction, precipitation, drainage, and idleness are completed. Process. A small amount of aeration is used to complete the gas stripping. Through the ideal standing and sedimentation process, the sludge and the supernatant are separated to ensure that the effluent SS is stable and meets the standard.
一种两级序批式反应器好氧颗粒污泥污水处理工艺的设备,包括反应器A区1和反应器B区2,反应器A区1设有第一进水管3和第一复合填料4,反应器B区2设有出水管5,反应器A区1和反应器B区2之间设有连接管6,反应器A区1和反应器B区2均设有曝气机构,能够便捷高效的进行污水处理,处 理效果好,运行简单,便于维护。A two-stage sequential batch reactor aerobic granular sludge sewage treatment process equipment, including reactor A zone 1 and reactor B zone 2, reactor A zone 1 is provided with a first water inlet pipe 3 and a first composite packing 4. Reactor B zone 2 is equipped with a water outlet pipe 5, reactor A zone 1 and reactor B zone 2 are provided with a connecting pipe 6, and reactor A zone 1 and reactor B zone 2 are both equipped with aeration mechanisms. Sewage treatment can be carried out conveniently and efficiently, with good treatment effect, simple operation and easy maintenance.
反应器B区2设有第二复合填料8。通过第二复合填料8提高反应器B区2中的脱磷效率。The reactor B zone 2 is provided with a second composite packing 8. The second composite packing 8 improves the dephosphorization efficiency in the B zone 2 of the reactor.
反应器B区2设有第二进水管9。第二进水管9利用污水原水用于补充反应器B区2中的碳源,能够节省碳源。The reactor B zone 2 is provided with a second water inlet pipe 9. The second water inlet pipe 9 uses the raw sewage water to supplement the carbon source in the reactor B zone 2, which can save the carbon source.
反应器A区1设有第一搅拌器10,第一搅拌器10低速厌氧搅拌增强颗粒污泥对污水有机质的吸附降解。The reactor A zone 1 is provided with a first agitator 10, the first agitator 10 low-speed anaerobic stirring enhances the adsorption and degradation of the organic matter of the sewage by the granular sludge.
反应器B区2设有第二搅拌器11,第二搅拌器11搅拌均化。The reactor B zone 2 is provided with a second stirrer 11, which stirs and homogenizes.
还包括污泥收集干化池12,污泥干化池与反应器B区2相连接。反应器B区2产生的剩余污泥通过周期性的排泥排出到污泥收集干化池12。污泥收集干化池12通过回流管将污泥渗漏液回流到反应器B区2,污泥收集干化池12内富含磷的干化污泥,可定期清理回用或由污泥处理厂处理(如:烧结陶粒)。It also includes a sludge collection and drying tank 12, which is connected to the reactor B zone 2. The surplus sludge produced in zone 2 of the reactor B is discharged to the sludge collection and drying tank 12 through periodic sludge discharge. The sludge collection and drying tank 12 returns the sludge leakage to the reactor B zone 2 through the return pipe. The phosphorus-rich dried sludge in the sludge collection and drying tank 12 can be cleaned and reused regularly or from the sludge. Treatment plant (such as: sintered ceramsite).
曝气机构包括气泵13、单向阀14、电磁阀15和曝气装置7,气泵13与单向阀14相连接,单向阀14与电磁阀15相连接,电磁阀15与曝气装置7相连接。间歇性曝气,实现高效快速的污水处理。The aeration mechanism includes an air pump 13, a one-way valve 14, a solenoid valve 15, and an aeration device 7. The air pump 13 is connected to the one-way valve 14, the one-way valve 14 is connected to the solenoid valve 15, and the solenoid valve 15 is connected to the aeration device 7. Phase connection. Intermittent aeration enables efficient and rapid sewage treatment.
本发明由于采用了上述技术方案,具有以下有益效果:The present invention has the following beneficial effects due to the adoption of the above technical scheme:
1)采用底部进水方式,促进污泥颗粒化进程,有利于快速培养出好氧颗粒污泥;1) Adopt the bottom water inlet method to promote the sludge granulation process, which is conducive to the rapid cultivation of aerobic granular sludge;
2)好氧颗粒污泥利于实现同步硝化反硝化,两级进水节省碳源且处理高效;沉降速度快,不需过长的水力停留时间;污泥龄长、有利于污泥减量;2) Aerobic granular sludge is conducive to simultaneous nitrification and denitrification. The two-stage water inflow saves carbon sources and has high treatment efficiency; the sedimentation speed is fast and does not require excessively long hydraulic retention time; the long sludge age is conducive to sludge reduction;
3)时间上反应为理想推流,生化反应推力大;沉淀为理想静置沉淀,固液分离效果好;3) In terms of time, the reaction is an ideal push flow, and the biochemical reaction has a large thrust; the precipitation is an ideal static precipitation, and the solid-liquid separation effect is good;
4)间歇式运行,能耗省;运行方式灵活,脱氮效果好;4) Intermittent operation, low energy consumption; flexible operation mode, good denitrification effect;
5)交替厌氧-缺氧-好氧环境,有效防止污泥膨胀;5) Alternating anaerobic-anoxic-aerobic environment can effectively prevent sludge expansion;
6)耐冲击负荷,反应池微生物活性高,污水处理能力强;6) Impact load resistance, high microbial activity in the reaction tank, and strong sewage treatment capacity;
7)设施占地面积小,工艺简单灵活。7) The facility occupies a small area and the process is simple and flexible.
以上仅为本发明的具体实施例,但本发明的技术特征并不局限于此。任何 以本发明为基础,为解决基本相同的技术问题,实现基本相同的技术效果,所作出的简单变化、等同替换或者修饰等,皆涵盖于本发明的保护范围之中。The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve basically the same technical problems and achieve basically the same technical effects are all covered by the protection scope of the present invention.
Claims (10)
- 一种两级序批式反应器好氧颗粒污泥污水处理工艺,其特征在于包括如下步骤:A two-stage sequencing batch reactor aerobic granular sludge sewage treatment process, which is characterized in that it comprises the following steps:a、一级颗粒污泥污水处理:一级污水原水进入反应器A区,利用好氧颗粒污泥对污水有机质吸附降解;a. First-level granular sludge sewage treatment: the first-level sewage raw water enters the reactor A zone, and the aerobic granular sludge is used to adsorb and degrade the organic matter of the sewage;b、二级活性污泥法污水处理:将反应器A区中不易沉降的轻质絮体污泥同混合液一起导入反应器B区,同时在反应器B区中导入二级污水原水用于补充碳源,在反应器B区中采用序批式活性污泥法处理,进一步的脱氮除磷,之后静置沉淀,完成污泥和上清液的分离;b. Secondary activated sludge method sewage treatment: the light floc sludge that is not easy to settle in the reactor A zone is introduced into the reactor B zone together with the mixed liquid, and the secondary sewage raw water is introduced into the reactor B zone for use Supplement the carbon source, adopt the sequencing batch activated sludge process in the reactor B zone, further remove nitrogen and phosphorus, and then stand for precipitation to complete the separation of sludge and supernatant;c、污泥收集干化:反应器B区产生的剩余污泥通过周期性的排泥排出至污泥收集干化池。c. Sludge collection and drying: The surplus sludge produced in zone B of the reactor is discharged to the sludge collection and drying tank through periodic sludge discharge.
- 根据权利要求1所述的一种两级序批式反应器好氧颗粒污泥污水处理工艺,其特征在于:步骤a的详细步骤为:A two-stage sequencing batch reactor aerobic granular sludge wastewater treatment process according to claim 1, characterized in that: the detailed steps of step a are:1、进水:一级污水原水在底部进水至反应器A区,在底部高生物量区培养颗粒污泥;1. Influent: the primary sewage raw water enters the reactor A zone at the bottom, and the granular sludge is cultivated in the high biomass area at the bottom;2、搅拌:通过搅拌器均化,增强颗粒污泥对污水有机质的吸附降解;2. Stirring: homogenize with agitator to enhance the adsorption and degradation of organic matter in sewage by granular sludge;3、间歇曝气:间歇性曝气,完成生物脱氮和有机物去除,同时利用曝气形成水力剪切促进污泥颗粒化,并加快除磷复合填料的化学除磷进程,利用化学除磷产出的螯合物进一步促进污泥的颗粒化,利用颗粒污泥易于形成好氧-缺氧-厌氧分层微环境而实现同步硝化反硝化;3. Intermittent aeration: Intermittent aeration to complete biological denitrification and organic matter removal. At the same time, aeration is used to form hydraulic shear to promote sludge granulation, and to speed up the chemical phosphorus removal process of phosphorus removal composite fillers, and use chemical phosphorus removal products. The resulting chelate further promotes the granulation of sludge, and the granular sludge is used to easily form aerobic-anoxic-anaerobic stratified microenvironment to realize simultaneous nitrification and denitrification;4、控制选择压:在反应器A区通过控制选择压,将沉降性能好的颗粒污泥留下,将不易沉降的轻质絮体污泥同混合液一起排入到反应器B区进一步处理。4. Control the selective pressure: by controlling the selective pressure in the reactor A zone, the granular sludge with good sedimentation performance is left, and the light floc sludge that is not easy to settle is discharged into the reactor B zone together with the mixed liquid for further processing .
- 根据权利要求1所述的一种两级序批式反应器好氧颗粒污泥污水处理工艺,其特征在于:步骤b的详细步骤为:A two-stage sequencing batch reactor aerobic granular sludge wastewater treatment process according to claim 1, wherein the detailed steps of step b are:1、进水:将反应器A区的不易沉降的絮状污泥同混合液一起导入至反应器 B区;1. Water intake: the flocculent sludge that is not easy to settle in zone A of the reactor is introduced into zone B of the reactor together with the mixed liquid;2、补充碳源:将污水原水引入反应器B区,由搅拌器进行搅拌均化;2. Supplementary carbon source: Introduce raw sewage water into zone B of the reactor, and stir and homogenize by agitator;3、反应:间歇性曝气,分阶段完成反硝化、硝化、二次反硝化过程;3. Reaction: intermittent aeration to complete the denitrification, nitrification and secondary denitrification processes in stages;4、静置:静置沉淀,污泥和上清液分离。4. Stand still: stand still to settle, sludge and supernatant are separated.
- 基于权利要求1所述的一种两级序批式反应器好氧颗粒污泥污水处理工艺的设备,其特征在于:包括反应器A区和反应器B区,所述反应器A区设有第一进水管和第一复合填料,所述反应器B区设有出水管,所述反应器A区和所述反应器B区之间设有连接管,所述反应器A区和所述反应器B区均设有曝气机构。A two-stage sequential batch reactor aerobic granular sludge wastewater treatment process equipment based on claim 1, characterized in that it comprises a reactor A zone and a reactor B zone, and the reactor A zone is provided with The first water inlet pipe and the first composite packing, the reactor B zone is provided with a water outlet pipe, the reactor A zone and the reactor B zone are provided with a connecting pipe, the reactor A zone and the The reactor B zone is equipped with an aeration mechanism.
- 根据权利要求4所述的一种两级序批式反应器好氧颗粒污泥污水处理工艺的设备,其特征在于:所述反应器B区设有第二复合填料。The equipment for a two-stage sequential batch reactor aerobic granular sludge sewage treatment process according to claim 4, characterized in that: the reactor B zone is provided with a second composite filler.
- 根据权利要求4所述的一种两级序批式反应器好氧颗粒污泥污水处理工艺的设备,其特征在于:所述反应器B区设有第二进水管。The equipment for a two-stage sequential batch reactor aerobic granular sludge sewage treatment process according to claim 4, characterized in that: the reactor B zone is provided with a second water inlet pipe.
- 根据权利要求4所述的一种两级序批式反应器好氧颗粒污泥污水处理工艺的设备,其特征在于:所述反应器A区设有第一搅拌器。The equipment for a two-stage sequential batch reactor aerobic granular sludge sewage treatment process according to claim 4, characterized in that: the reactor A zone is provided with a first agitator.
- 根据权利要求4所述的一种两级序批式反应器好氧颗粒污泥污水处理工艺的设备,其特征在于:所述反应器B区设有第二搅拌器。The equipment for a two-stage sequential batch reactor aerobic granular sludge sewage treatment process according to claim 4, characterized in that: the reactor B zone is provided with a second agitator.
- 根据权利要求4所述的一种两级序批式反应器好氧颗粒污泥污水处理工艺的设备,其特征在于:还包括污泥收集干化池,所述污泥干化池与所述反应器B区相连接。The equipment for a two-stage sequential batch reactor aerobic granular sludge sewage treatment process according to claim 4, characterized in that it further comprises a sludge collection and drying tank, said sludge drying tank and said Reactor B zone is connected.
- 根据权利要求4所述的一种两级序批式反应器好氧颗粒污泥污水处理工艺的设备,其特征在于:所述曝气机构包括气泵、单向阀、电磁阀和曝气装置,所述气泵与所述单向阀相连接,所述单向阀与所述电磁阀相连接,所 述电磁阀与所述曝气装置相连接。The equipment for a two-stage sequential batch reactor aerobic granular sludge sewage treatment process according to claim 4, characterized in that: the aeration mechanism comprises an air pump, a one-way valve, a solenoid valve and an aeration device, The air pump is connected with the one-way valve, the one-way valve is connected with the solenoid valve, and the solenoid valve is connected with the aeration device.
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CN212050743U (en) * | 2020-04-13 | 2020-12-01 | 浙江双林环境股份有限公司 | Equipment for aerobic granular sludge sewage treatment process of two-stage sequencing batch reactor |
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CN114044619A (en) * | 2021-11-19 | 2022-02-15 | 恩格拜(北京)生态科技有限公司 | Method for breeding tubificidae and efficiently treating fecal sewage |
CN114477450A (en) * | 2022-02-25 | 2022-05-13 | 新疆德安环保科技股份有限公司 | Enhanced domestic sewage nitrogen and phosphorus removal treatment device and treatment method |
CN114956313A (en) * | 2022-05-09 | 2022-08-30 | 广东首汇蓝天工程科技有限公司 | Sewage treatment method |
CN114956313B (en) * | 2022-05-09 | 2023-09-01 | 广东首汇蓝天工程科技有限公司 | Sewage treatment method |
CN116605988A (en) * | 2023-04-07 | 2023-08-18 | 广东粤海水务投资有限公司 | Quick starting method of integrated aerobic granular sludge-membrane bioreactor |
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