Activated sludge water treatment system and method

Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to an activated sludge water treatment system and method.The activated sludge water treatment system comprises a contact oxidation pond, an intelligent filter and a control system, a microbiological treatment system comprises a microbiological community monitoring module and a microbiological regulation and control module, and the microbiological community monitoring module comprises a high-throughput sequencing analysis unit and an early warning trigger unit. The early warning trigger unit comprises an early warning data receiver and an alarm. The microbial regulation and control module comprises a microbial data collection unit and a microbial agent adding unit. The microbial agent adding unit comprises a microbial agent storage tank, a microbial agent blending module and an adding and conveying module. According to the activated sludge water treatment system provided by the invention, the high-throughput sequencing analysis unit, the early warning trigger unit, the microbial data collection unit and the microbial agent adding unit work cooperatively, so that the whole-process intelligent management from real-time monitoring of microbial communities, imbalance early warning to precise regulation and control is realized, and the water environment quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an activated sludge water treatment system and method. Background Art

[0002] The activated sludge water reuse deep treatment system is an efficient and environmentally friendly sewage treatment technology, which is mainly used to deeply treat wastewater to meet the reuse standards. The system uses biological reactors and filtration processes to remove organic matter, nitrogen, phosphorus and other pollutants in the wastewater.

[0003] The microbial community in the activated sludge water treatment system used previously is prone to imbalance. Due to the frequent fluctuations in the influent water quality and water volume, as well as the impact of toxic and harmful substances, it is very easy to cause an imbalance in the microbial community structure in the activated sludge. In addition, the traditional activated sludge treatment system has a fixed process and lacks flexible adjustment capabilities. When the influent water quality and water volume suddenly change beyond the design range, the treatment effect is greatly reduced, and the effluent water quality is difficult to stably meet the standards. Pollutants such as COD, ammonia nitrogen, and total phosphorus are prone to exceed the standards, affecting the environmental quality of the receiving water body. Summary of the invention

[0004] The purpose of the present invention is to provide an activated sludge water treatment system and method, aiming to solve the technical problems in the prior art that the microbial community structure in the activated sludge is unbalanced and affects the environmental quality of the receiving water body.

[0005] To achieve the above-mentioned purpose, an activated sludge water treatment system provided in an embodiment of the present invention comprises a contact oxidation tank, an intelligent filter tank and a control system, wherein the contact oxidation tank is connected to the intelligent filter tank; all microbial treatment systems and aeration mechanisms in the contact oxidation tank;

[0006] The microbial treatment system includes a microbial community monitoring module and a microbial regulation module, both of which are electrically connected to the control system, and the microbial community monitoring module includes a high-throughput sequencing analysis unit and an early warning trigger unit, wherein the high-throughput sequencing analysis unit performs sequencing analysis on the microbial community in the activated sludge in real time to obtain information on microbial species and abundance, with a sequencing frequency of not less than once every 2 hours, and identifies the proportion of filamentous bacteria; the early warning trigger unit is connected to the high-throughput sequencing analysis unit, and when the high-throughput sequencing analysis unit monitors that the proportion of filamentous bacteria exceeds 20% or other preset bacterial imbalance indicators, the early warning trigger unit triggers an early warning signal;

[0007] The microbial regulation module is connected to the microbial community monitoring module, and the microbial regulation module includes a microbial data collection unit and a microbial agent addition unit. The microbial data collection unit collects and stores historical data and real-time monitoring data of influent water quality and water quantity, and the microbial agent addition unit adds microbial agents according to the imbalance of the microbial community monitored by the microbial community monitoring module; the microbial regulation module is connected to the aeration mechanism and controls the aeration amount of the aeration mechanism.

[0008] As an optional solution of the present invention, the high-throughput sequencing analysis unit performs large-scale and rapid sequencing of microbial nucleic acids in activated sludge samples based on molecular biology technology.

[0009] As an optional solution of the present invention, the early warning trigger unit includes an early warning data receiver and an alarm, wherein the early warning data receiver is connected to the high-throughput sequencing analysis unit and receives data information from the high-throughput sequencing analysis unit, and the alarm is connected to the control system and issues an alarm according to instructions issued by the control system.

[0010] As an optional solution of the present invention, the microbial data collection unit includes an automatic sampling device and a sample transmission module, and the automatic sampling device and the sample transmission module are both connected to the control system.

[0011] As an optional solution of the present invention, the microbial agent dosing unit includes a microbial agent storage tank, a microbial agent preparation module and a dosing and conveying module. The microbial agent storage tank is fixedly connected to the contact oxidation tank, and the microbial agent preparation module is respectively connected to the microbial agent storage tank and the dosing and conveying module.

[0012] As an optional solution of the present invention, the aeration mechanism includes an aeration main pipe, the aeration main pipe is provided with a cleaning component, the cleaning component includes an ultrasonic sensor, a flow sensor and a chemical cleaning ball, the ultrasonic sensor and the flow sensor are connected to the inner wall of the aeration main pipe, the chemical cleaning ball is arranged in the aeration main pipe, the aeration main pipe is fixed on the contact oxidation tank, and a nano titanium dioxide layer is fixedly connected in the aeration main pipe; the ultrasonic sensor and the flow sensor are electrically connected to the control system.

[0013] As an optional scheme of the present invention, a water inlet is provided in the contact oxidation tank, a sludge zone is formed at the bottom of the contact oxidation tank, a temperature control component is provided above the sludge zone, the temperature control component includes a temperature sensor and a heating tube, and the temperature sensor and the heating tube are both connected to the contact oxidation tank; a plurality of perforated sludge discharge pipes are provided in the sludge zone; a plurality of perforated sludge discharge pipes are evenly distributed in the sludge zone, a plurality of evenly distributed perforations are provided at the bottom of the perforated sludge discharge pipes, a plurality of sludge discharge pipes are provided on the top side of the perforated sludge discharge pipes, one end of the sludge discharge pipe is connected to the perforated sludge discharge pipe, and the other end extends out of the contact oxidation tank; a recoil pipe is provided on the top side of the sludge discharge pipe, one end of the recoil pipe is connected to the sludge discharge pipe, and the other end extends to the top of the contact oxidation tank and is connected to a fan, a pneumatic valve and a manual valve are provided at the bottom of the recoil pipe, and a combined fiber filler is provided in the contact oxidation tank.

[0014] As an optional scheme of the present invention, the smart filter tank includes a smart filter tank body, a sewage discharge area, a sedimentation area, a filtration area, a clean water area, a water inlet area and a water outlet area. The sewage discharge area, sedimentation area, filtration area and clean water area are arranged in the smart filter tank body from bottom to top, and the water inlet area and the water outlet area are both arranged at the top of the smart filter tank body. A microfiltration membrane is arranged in the filtration area, a backwashing device is arranged above the smart filter tank body, and an ultrasonic generating device is arranged below the backwashing device; a partition wall is arranged on the top of the smart filter tank body, and the partition wall separates the water inlet area and the sewage discharge area; a water inlet is arranged on the water inlet, and a water inlet valve is arranged on the water inlet; the sedimentation area is provided with a sewage discharge outlet, and a sewage discharge valve is arranged on the sewage discharge outlet.

[0015] Based on the same inventive concept of the present invention, the present application also provides an activated sludge water treatment method, the activated sludge water treatment method comprising the following steps:

[0016] S1: Microbial community sequencing analysis:

[0017] The high-throughput sequencing analysis unit performs real-time sequencing analysis on the microbial community in the activated sludge to obtain information on the types and abundance of microorganisms, with a sequencing frequency of no less than once every 2 hours, to identify the proportion of filamentous bacteria;

[0018] S2: Microbial warning trigger:

[0019] The early warning trigger unit is connected to the high-throughput sequencing analysis unit. When the high-throughput sequencing analysis unit detects that the proportion of filamentous bacteria exceeds 20% or other preset flora imbalance indicators, a signal is sent to the early warning trigger unit, and the early warning trigger unit triggers an early warning signal;

[0020] S3: Microbiological data collection:

[0021] The microbial data collection unit collects and stores historical data and real-time monitoring data of influent water quality and water quantity;

[0022] S4: Aeration control:

[0023] According to the data collected by the microbial data collection unit, when it is predicted that toxic and harmful substances flow in or the water inlet load increases, the control system controls the aeration mechanism to automatically and appropriately increase the aeration intensity, so that the dissolved oxygen level is increased by 1-2 mg / L on the original basis, thereby stimulating the stress response of the microorganisms and ensuring the activity of the microorganisms;

[0024] S5: Addition of microbial agents:

[0025] The microbial agent adding unit adds the microbial agent according to the imbalance of the microbial community monitored by the microbial community monitoring module;

[0026] S6: Sewage drainage and sludge return:

[0027] The return sludge in the intelligent filter tank enters the contact oxidation tank from the inlet pipe of the contact oxidation tank and becomes sewage in the contact oxidation tank. The sewage flows downward through the combined fiber filler to reach the sludge sedimentation area. The contact oxidation tank blocks the sludge. Due to the blocking effect of the contact oxidation tank, the sewage passes through the water outlet, flows upward through the combined fiber filler again to reach the pool surface, and then is discharged to the water inlet of the intelligent filter tank through the outlet pipe. The sewage enters the water inlet area through the water inlet of the intelligent filter tank, and then enters the sedimentation area, flows upward through the filtration area and the filtration device to reach the clean water area, and then reaches the outlet area for discharge. A large amount of sludge in the sewage is intercepted, enters the sewage outlet through the sedimentation area, and then flows back to the contact aerobic tank inlet pipe through the sewage outlet to form a cycle.

[0028] S7: Biochemical reaction and sludge removal steps:

[0029] The return sludge in the intelligent filter tank is introduced into the contact oxidation tank from the water inlet pipe of the contact oxidation tank, and aerobic reaction is carried out in the combined fiber filler to remove organic matter in the sludge. The oxygen for the aerobic reaction is provided by the aeration main pipe and the aeration branch pipe. The supernatant is discharged to the water inlet of the intelligent filter tank through the outlet pipe, and the sludge enters the sludge area. After the sludge is precipitated, it enters the perforated sludge discharge pipe and then enters the sludge discharge pipe. The backwash pipe is controlled by a pneumatic valve and a manual valve, and air backwashing and sludge discharge are automatically performed regularly to discharge the sludge from the sludge discharge pipe outside the contact oxidation tank.

[0030] As an optional scheme of the present invention, sewage enters the water inlet area of ​​the intelligent filter tank and flows upward through the sedimentation area, filtration area, filtration device, and clean water area in sequence. The sedimentation area, filtration area, and filtration device intercept and filter the sewage in sequence. A large amount of sludge is intercepted and precipitated in the sedimentation area at the bottom of the intelligent filter tank. The sludge is then continuously returned to the water inlet pipe of the contact oxidation tank through the sewage discharge area. The sewage is intercepted and filtered and then flows through the clean water area.

[0031] The above one or more technical solutions in the activated sludge water treatment system provided by the embodiment of the present invention have at least one of the following technical effects:

[0032] The activated sludge water treatment system provided in the present application includes a contact oxidation tank, an intelligent filtration tank and a control system. The high-throughput sequencing analysis unit, the early warning trigger unit, the microbial data collection unit and the microbial agent addition unit work together to realize intelligent management of the entire process from real-time monitoring of the microbial community, imbalance early warning to precise regulation, thereby improving the quality of the water environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 A schematic structural diagram of a contact oxidation tank of an activated sludge water treatment system provided in an embodiment of the present invention.

[0035] Figure 2 for Figure 1 Cross-sectional view along NN.

[0036] Figure 3 for Figure 1 Cross-sectional view along MM.

[0037] Figure 4 A schematic diagram of the structure of the intelligent filter tank of the activated sludge water treatment system provided in an embodiment of the present invention.

[0038] Figure 5 A schematic diagram of the structures of the contact oxidation tank and the intelligent filtration tank of the activated sludge water treatment system provided in an embodiment of the present invention.

[0039] Figure 6 A schematic structural diagram of a microbial agent dosing unit of an activated sludge water treatment system provided in an embodiment of the present invention.

[0040] Figure 7 A schematic diagram of the internal structure of an aeration main pipe of an activated sludge water treatment system provided in an embodiment of the present invention.

[0041] Figure 8 This is a schematic diagram of an activated sludge water treatment system provided in an embodiment of the present invention.

[0042] Among them, the reference numerals in the figure are:

[0043] 1. Contact oxidation tank; 2. Intelligent filter tank; 3. Control system; 5. Aeration mechanism;

[0044] 11. Water inlet; 12. Sludge area; 13. Temperature control component; 14. Perforated sludge discharge pipe; 15. Sludge discharge pipe; 16. Backwash pipe; 17. Water inlet pipe; 18. Water outlet pipe; 19. Combined fiber filler;

[0045] 20. Ultrasonic generator; 21. Intelligent filter tank body; 22. Sewage discharge area; 23. Sedimentation area; 24. Filtration area; 25. Clean water area; 26. Water inlet area; 27. Water outlet area; 28. Microfiltration membrane; 29. ​​Backwashing device;

[0046] 51. Aeration main pipe; 52. Cleaning components;

[0047] 131. Temperature sensor; 132. Heating tube;

[0048] 211. Partition wall;

[0049] 231. sewage outlet; 232. sewage valve;

[0050] 261, water inlet; 262, water inlet valve;

[0051] 411. High-throughput sequencing analysis unit;

[0052] 422. Microbial agent dosing unit;

[0053] 521. Ultrasonic sensor; 522. Flow sensor;

[0054] 4121. Warning data receiver; 4122. Alarm;

[0055] 4211. automatic sampling device; 4212. sample transmission module;

[0056] 4221, bacterial agent storage tank; 4222, bacterial agent preparation module; 4223, dosing and conveying module;

[0057] 42221. Metering pump. 42222. Static mixer. DETAILED DESCRIPTION

[0058] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0059] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0061] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0062] In one embodiment of the present invention, Figures 1 to 8 As shown, an activated sludge water treatment system is provided, including a contact oxidation tank 1, an intelligent filter tank 2 and a control system 3, wherein the contact oxidation tank 1 is connected to the intelligent filter tank 2. The contact oxidation tank 1 has all microbial treatment systems and an aeration mechanism 5.

[0063] The microbial treatment system includes a microbial community monitoring module and a microbial regulation module, both of which are electrically connected to the control system 3. The microbial community monitoring module includes a high-throughput sequencing analysis unit 411 and an early warning trigger unit. The high-throughput sequencing analysis unit 411 performs real-time sequencing and analysis of the microbial community in the activated sludge to obtain information on microbial species and abundance, with a sequencing frequency of not less than once every 2 hours, to identify the proportion of filamentous flora. The early warning trigger unit is connected to the high-throughput sequencing analysis unit 411. When the high-throughput sequencing analysis unit 411 detects that the proportion of filamentous flora exceeds 20% or other preset flora imbalance indicators, the early warning trigger unit triggers an early warning signal.

[0064] The microbial control module is connected to the microbial community monitoring module. The microbial control module includes a microbial data collection unit and a microbial agent addition unit 422. The microbial data collection unit collects and stores historical data and real-time monitoring data of influent water quality and water volume. The microbial agent addition unit 422 adds microbial agents according to the imbalance of the microbial community monitored by the microbial community monitoring module. The microbial control module is connected to the aeration mechanism 5 and controls the aeration amount of the aeration mechanism 5.

[0065] The activated sludge water treatment system provided in the present application comprises a high-throughput sequencing analysis unit 411, an early warning trigger unit, a microbial data collection unit and a microbial agent addition unit 422 which work together to achieve intelligent management of the entire process from real-time monitoring of the microbial community, imbalance early warning to precise regulation, thereby improving the quality of the water environment.

[0066] In another embodiment of the present invention, the high-throughput sequencing analysis unit 411 performs large-scale and rapid sequencing of microbial nucleic acids in activated sludge samples based on molecular biology techniques. The high-throughput sequencing analysis unit 411 is a key part for accurately monitoring microbial communities in activated sludge water treatment systems: it is based on advanced molecular biology techniques and can perform large-scale and rapid sequencing of microbial nucleic acids (usually DNA of bacteria, fungi, etc.) in activated sludge samples. Compared with traditional microbial detection methods, it has the following significant advantages: On the one hand, high-throughput sequencing can obtain tens of thousands or even millions of DNA sequence information in a sample at one time, covering gene fragments of many microorganisms in activated sludge. Through bioinformatics analysis of these massive sequences, the types of microorganisms can be accurately identified, whether they are common dominant strains or microorganisms with rare content but may have special functions, and the relative abundance of each microorganism can be accurately determined to clarify their proportion in the community. For example, in the activated sludge system that treats sewage in chemical parks, high-throughput sequencing can clearly distinguish the changes in the microbial population involved in the degradation of specific organic pollutants, such as the increase or decrease in the number of Pseudomonas in response to the impact of wastewater containing aromatic hydrocarbons, and the fluctuations in the community structure of filamentous bacteria that may cause sludge bulking problems. On the other hand, its outstanding timeliness enables the sequencing frequency to be no less than once every 2 hours. Such high-frequency monitoring is like installing a "real-time camera" for the microbial community in the activated sludge, which can timely capture the dynamic changes of the microbial community caused by external factors such as fluctuations in influent water quality and water volume, or the invasion of toxic and harmful substances. Once it is found that key indicators that indicate an imbalance in the microbial community are abnormal, such as filamentous bacteria accounting for more than 20%, feedback can be quickly provided to buy valuable time for subsequent early warnings and process adjustments, and ensure the stable operation of the activated sludge treatment system.

[0067] In another embodiment of the present invention, the early warning trigger unit includes an early warning data receiver 4121 and an alarm 4122. The early warning data receiver 4121 is connected to the high-throughput sequencing analysis unit 411 and receives data information of the high-throughput sequencing analysis unit 411. The alarm 4122 is connected to the control system 3 and issues an alarm according to the instructions issued by the control system 3. When the high-throughput sequencing analysis unit 411 monitors that the proportion of filamentous bacteria exceeds 20% or other preset bacterial imbalance indicators, the early warning signal is automatically triggered immediately, and the early warning signal can be alarmed by sound and light. The early warning trigger unit is connected to the inner side of the contact oxidation tank 1.

[0068] In another embodiment of the present invention, the microbial data collection unit includes an automatic sampling device 4211 and a sample transmission module 4212, and the automatic sampling device 4211 and the sample transmission module 4212 are both connected to the control system 3. The automatic sampling device 4211 is composed of a high-precision mechanical arm and a sampling probe, and the mechanical arm and the sampling probe are both connected to the control system 3 and installed at key nodes of the activated sludge treatment system, such as the contact oxidation tank 1, the return sludge pipeline and other locations. The mechanical arm has multi-degree-of-freedom movement capabilities and can collect sludge samples at regular intervals and points according to a preset program. The sampling frequency can be flexibly set in the central control system, ranging from once per hour to once every 6 hours, to meet the monitoring requirements of different working conditions. The sampling probe is made of a special corrosion-resistant, non-mud-sticking material, such as polytetrafluoroethylene-coated stainless steel, to ensure that the collected samples are representative and not contaminated. The front end of the probe is designed with a fine cutting edge to facilitate cutting into the interior of the sludge flocs to obtain uniform samples. The sampling volume is accurately controlled at 10-50 ml each time, which can not only meet the requirements of detection and analysis, but also avoid excessive sampling from interfering with the operation of the system.

[0069] In another embodiment of the present invention, the microbial agent dosing unit 422 includes a microbial agent storage tank 4221, a microbial agent preparation module 4222 and a dosing and conveying module 4223. The microbial agent storage tank 4221 is fixedly connected to the contact oxidation tank 1, and the microbial agent preparation module 4222 is respectively connected to the microbial agent storage tank 4221 and the dosing and conveying module 4223. The microbial agent storage tank 4221 is made of food-grade stainless steel and is made into a plurality of cylindrical storage tanks for storing different types of microbial agents to cope with a variety of water pollutants. The storage tank volume is reasonably designed according to the scale of the sewage treatment plant and the daily use of microbial agents, and the capacity of a single storage tank ranges from 1 to 10 cubic meters. A stirring device can be provided inside the storage tank, which is driven by a low-speed variable frequency motor and can be started at a fixed time to ensure that the microbial agent remains in a uniform suspension state during storage, prevent precipitation and agglomeration, and maintain the activity of the microbial agent. Each storage tank is equipped with an independent temperature control system 3, which accurately controls the storage temperature of the inoculum within the range suitable for the growth of microorganisms, generally 4-25°C, through the cooling or heating coils surrounding the tank body and the feedback adjustment of the temperature sensor 131. For example, for nitrifying bacteria inoculum, a stable temperature of 20-25°C can ensure its optimal activity and promote the conversion of ammonia nitrogen; and for some low-temperature adaptable bacteria inoculum, the temperature can be maintained at 4-10°C in winter, reducing energy consumption while ensuring the performance of the inoculum.

[0070] Connected to the outlet of the storage tank is a set of bacterial agent preparation module 4222, which consists of a high-precision metering pump 42221, a flow control valve and a static mixer 42222. When the central control system determines that a certain bacterial agent needs to be added based on the inlet water quality monitoring data and the microbial community analysis results, the metering pump 42221 first extracts the bacterial agent from the corresponding storage tank according to the preset dosage ratio, and the flow control valve fine-tunes the extraction flow in real time to ensure that the addition accuracy is controlled within ±5%. The extracted bacterial agent is fully mixed with an appropriate amount of dilution water (generally treated clean water or disinfected reclaimed water) in the static mixer 42222. The dilution ratio can be flexibly adjusted between 1:1-1:10 according to actual needs to make the bacterial agent evenly dispersed. The subsequent precise addition is facilitated through the addition and delivery module 4223 to avoid the impact of excessive local bacterial agent concentration on the microbial community.

[0071] The dosing and conveying module 4223 includes a dosing and conveying pipeline. The prepared microbial agent is delivered to the dosing point through a conveying network composed of corrosion-resistant dosing and conveying pipelines. The layout of the dosing and conveying pipeline is designed according to the process flow chart of the activated sludge treatment system to shorten the conveying distance as much as possible, reduce the residence time of the microbial agent in the pipeline, and prevent the activity of the microbial agent from decaying. The dosing and conveying pipeline adopts hot-melt connection or flange connection to ensure sealing and avoid leakage to cause waste of microbial agent and environmental pollution.

[0072] In another embodiment of the present invention, the aeration mechanism 5 includes an aeration main pipe 51, and the aeration main pipe 51 is provided with a cleaning component 52. The cleaning component 52 includes an ultrasonic sensor 521, a flow sensor 522 and a chemical cleaning ball. The ultrasonic sensor 521 and the flow sensor 522 are fixedly connected to the inner wall of the aeration main pipe 51, and the chemical cleaning ball is arranged in the aeration main pipe 51. The aeration main pipe 51 is fixed on the contact oxidation tank 1, and a nano titanium dioxide layer is fixedly connected in the aeration main pipe 51. The ultrasonic sensor 521 and the flow sensor 522 are electrically connected to the control system 3. The ultrasonic sensor 521 or the flow sensor 522 is installed on the wall of the aeration pipe to monitor the thickness, flow rate and other parameters of the dirt on the pipe wall in real time. The sensor transmits data to the control system 3. The control system 3 prompts to add a chemical cleaning ball according to a preset threshold value when the dirt accumulation reaches a certain level. The chemical cleaning ball contains a ball of chemical cleaning components and is placed in the aeration main pipe 51. The outer shell of the ball is made of a slow-release material, such as polyvinyl alcohol. Over time, the spheres slowly release chemical cleaning agents to continuously clean the tube walls, prevent dirt from adhering, and increase aeration.

[0073] In another embodiment of the present invention, a water inlet 11 is provided in the contact oxidation tank 1, a sludge zone 12 is formed at the bottom of the contact oxidation tank 1, a temperature control component 13 is provided above the sludge zone 12, and the temperature control component 13 includes a temperature sensor 131 and a heating pipe 132, and the temperature sensor 131 and the heating pipe 132 are fixedly connected to the contact oxidation tank 1. The temperature control component 13 controls the temperature in the contact oxidation tank 1 and regulates the growth and metabolism of microorganisms. A plurality of perforated sludge discharge pipes 14 are provided in the sludge zone 12, and the plurality of perforated sludge discharge pipes 14 are evenly distributed in the sludge zone 12, a plurality of evenly distributed perforations are provided at the bottom of the perforated sludge discharge pipes 14, and a plurality of sludge discharge pipes 15 are provided on the top side of the perforated sludge discharge pipes 14, and a sludge discharge pipe 15 is provided on each perforation, and one end of the sludge discharge pipe 15 is connected to the perforated sludge discharge pipe 14, and the other end extends out of the contact oxidation tank 1. The sludge is discharged through the perforated sludge discharge pipes 14 and the sludge discharge pipes 15 in sequence. A recoil pipe 16 is provided on the top side of the sludge discharge pipe 15, one end of the recoil pipe 16 is connected to the sludge discharge pipe 15, and the other end extends to the top of the contact oxidation tank 1 and is connected to the fan. The pneumatic valve and the manual valve control the pneumatic valve to perform air recoil to increase the air pressure in the sludge discharge pipe 15, so that the sludge in the perforated sludge discharge pipe 14 is not easily blocked, and the sludge can be discharged out of the contact oxidation tank 112. A pneumatic valve and a manual valve are provided at the bottom of the recoil pipe 16, and a combined fiber filler 19 is provided in the contact oxidation tank 1. The sludge undergoes aerobic reaction in the combined fiber filler 19 to remove organic matter in the sewage. The effluent of the contact oxidation tank 1 is discharged from the outlet pipe 18 to the water inlet 261 of the intelligent filter tank 2, and the sludge reflux of the intelligent filter tank 2 is discharged from the sewage outlet 231 to the water inlet pipe 17 of the contact oxidation tank 1.

[0074] In another embodiment of the present invention, the smart filter 2 includes a smart filter body 21, a sewage area 22, a sedimentation area 23, a filtration area 24, a clean water area 25, a water inlet area 26 and a water outlet area 27. The sewage area 22, the sedimentation area 23, the filtration area 24 and the clean water area 25 are sequentially arranged in the smart filter body 21 from bottom to top. The water inlet area 26 and the water outlet area 27 are both arranged at the top of the smart filter body 21. A microfiltration membrane 28 is arranged in the filtration area 24. A backwashing device 29 is arranged above the smart filter body 21, and an ultrasonic generator 20 is arranged below the backwashing device 29. A partition wall 211 is arranged at the top of the smart filter body 21, and the partition wall 211 separates the water inlet area 26 and the sewage area 22. A water inlet 26 is arranged on the water inlet area 26, and a water inlet valve 262 is arranged on the water inlet 261. A sewage outlet 231 is arranged in the sedimentation area 23, and a sewage outlet valve 232 is arranged on the sewage outlet 231. The intelligent filter tank 2 is equipped with a fully intelligent backwashing device 29 to realize automatic control. The ultrasonic generator 20 generates energy to push the water flow downward. The backwashing direction is opposite to the filtering direction, achieving a good cleaning effect. The filter tank can operate continuously without being affected during backwashing, and the operation and management are convenient.

[0075] Based on the same inventive concept of the present invention, the present application also provides an activated sludge water treatment method, which comprises the following steps:

[0076] S1: Microbial community sequencing analysis:

[0077] The high-throughput sequencing analysis unit 411 performs real-time sequencing analysis on the microbial community in the activated sludge to obtain information on the types and abundance of microorganisms. The sequencing frequency is not less than once every 2 hours to identify the proportion of filamentous bacteria.

[0078] S2: Microbial warning trigger:

[0079] The early warning trigger unit is connected to the high-throughput sequencing analysis unit 411. When the high-throughput sequencing analysis unit 411 detects that the proportion of filamentous bacteria exceeds 20% or other preset bacterial imbalance indicators, a signal is sent to the early warning trigger unit, and the early warning trigger unit triggers an early warning signal.

[0080] S3: Microbiological data collection:

[0081] The microbial data collection unit collects and stores historical data of influent water quality and quantity as well as real-time monitoring data.

[0082] S4: Aeration control:

[0083] According to the data collected by the microbial data collection unit, when it is predicted that toxic and harmful substances will flow in or the water load will increase, the control system 3 controls the aeration mechanism 5 to automatically and appropriately increase the aeration intensity, so that the dissolved oxygen level is increased by 1-2 mg / L on the original basis, thereby stimulating the stress response of the microorganisms and ensuring the activity of the microorganisms.

[0084] S5: Addition of microbial agents:

[0085] The microbial agent adding unit 422 adds microbial agents according to the imbalance of the microbial community monitored by the microbial community monitoring module.

[0086] S6: Sewage drainage and sludge return:

[0087] The return sludge in the intelligent filter tank 2 enters the contact oxidation tank 1 from the water inlet pipe 17 of the contact oxidation tank 1 and becomes sewage in the contact oxidation tank 1. The sewage flows downward through the combined fiber filler 19 to reach the sludge sedimentation area 23. The contact oxidation tank 1 blocks the sludge. Due to the blocking effect of the contact oxidation tank 1, the sewage passes through the water outlet 11, flows upward again through the combined fiber filler 19 to reach the pool surface, and then is discharged to the water inlet 261 of the intelligent filter tank 2 through the outlet pipe 18. The sewage enters the water inlet area 26 through the water inlet 261 of the intelligent filter tank 2, and then enters the sedimentation area 23, flows upward through the filtration area 24 and the filtration device to reach the clear water area 25, and then reaches the water outlet area 27 for discharge. A large amount of sludge in the sewage is intercepted, enters the sewage outlet 231 through the sedimentation area 23, and then flows back to the contact aerobic tank water inlet pipe 17 through the sewage outlet 231 to form a cycle.

[0088] S7: Biochemical reaction and sludge removal steps:

[0089] The return sludge in the intelligent filter 2 enters the contact oxidation tank 1 from the water inlet pipe 17 of the contact oxidation tank 1, and an aerobic reaction is carried out in the combined fiber filler 19 to remove organic matter in the sludge. The oxygen for the aerobic reaction is provided by the aeration main pipe 51 and the aeration branch pipe. The supernatant is discharged to the water inlet 261 of the intelligent filter 2 through the outlet pipe 18. The sludge enters the sludge area 12. After the sludge is precipitated, it enters the perforated sludge discharge pipe 14 and then enters the sludge discharge pipe 15. The backwash pipe 16 is controlled by a pneumatic valve and a manual valve, and air backwashing and sludge discharge are automatically performed regularly to discharge the sludge from the sludge discharge pipe 15 to the outside of the contact oxidation tank 1.

[0090] In another embodiment of the present invention, sewage enters from the water inlet area 26 of the intelligent filter tank 2, and flows upward through the sedimentation area 23, the filtration area 24, the filtration device, and the clean water area 25 in sequence. The sedimentation area 23, the filtration area 24, and the filtration device intercept and filter the sewage in multiple steps in sequence. A large amount of sludge is intercepted and precipitated in the sedimentation area 23 at the bottom of the intelligent filter tank 2, and then the sludge is continuously returned to the water inlet pipe 17 of the contact oxidation tank 1 through the sewage discharge area 22. The sewage is intercepted and filtered and then flows through the clean water area 25.

[0091] The activated sludge water treatment system provided in the present application comprises a high-throughput sequencing analysis unit 411, an early warning trigger unit, a microbial data collection unit and a microbial agent addition unit 422 which work together to achieve intelligent management of the entire process from real-time monitoring of the microbial community, imbalance early warning to precise regulation, thereby improving the quality of the water environment.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An activated sludge water treatment system, characterized in that: It includes a contact oxidation tank, an intelligent filtration tank and a control system, wherein the contact oxidation tank is connected to the intelligent filtration tank; all microbial treatment systems and aeration mechanisms in the contact oxidation tank; The microbial treatment system includes a microbial community monitoring module and a microbial regulation module, both of which are electrically connected to the control system, and the microbial community monitoring module includes a high-throughput sequencing analysis unit and an early warning trigger unit, wherein the high-throughput sequencing analysis unit performs sequencing analysis on the microbial community in the activated sludge in real time to obtain information on microbial species and abundance, with a sequencing frequency of not less than once every 2 hours, and identifies the proportion of filamentous bacteria; the early warning trigger unit is connected to the high-throughput sequencing analysis unit, and when the high-throughput sequencing analysis unit monitors that the proportion of filamentous bacteria exceeds 20% or other preset bacterial imbalance indicators, the early warning trigger unit triggers an early warning signal; The microbial regulation module is connected to the microbial community monitoring module, and the microbial regulation module includes a microbial data collection unit and a microbial agent addition unit. The microbial data collection unit collects and stores historical data and real-time monitoring data of influent water quality and water quantity, and the microbial agent addition unit adds microbial agents according to the imbalance of the microbial community monitored by the microbial community monitoring module; the microbial regulation module is connected to the aeration mechanism and controls the aeration amount of the aeration mechanism.

2. The activated sludge water treatment system according to claim 1, characterized in that: The high-throughput sequencing analysis unit performs large-scale and rapid sequencing of microbial nucleic acids in activated sludge samples based on molecular biology technology.

3. The activated sludge water treatment system according to claim 1, characterized in that: The early warning trigger unit includes an early warning data receiver and an alarm. The early warning data receiver is connected to the high-throughput sequencing analysis unit and receives data information from the high-throughput sequencing analysis unit. The alarm is connected to the control system and issues an alarm according to instructions issued by the control system.

4. The activated sludge water treatment system according to claim 1, characterized in that: The microbial data collection unit comprises an automatic sampling device and a sample transmission module, and both the automatic sampling device and the sample transmission module are connected to the control system.

5. The activated sludge water treatment system according to claim 1, characterized in that: The microbial agent dosing unit comprises a microbial agent storage tank, a microbial agent preparation module and a dosing and conveying module. The microbial agent storage tank is fixedly connected to the contact oxidation tank, and the microbial agent preparation module is respectively connected to the microbial agent storage tank and the dosing and conveying module.

6. The activated sludge water treatment system according to claim 1, characterized in that: The aeration mechanism comprises an aeration main pipe, the aeration main pipe is provided with a cleaning component, the cleaning component comprises an ultrasonic sensor, a flow sensor and a chemical cleaning ball, the ultrasonic sensor and the flow sensor are connected to the inner wall of the aeration main pipe, the chemical cleaning ball is arranged in the aeration main pipe, the aeration main pipe is fixed on the contact oxidation tank, and a nano titanium dioxide layer is fixedly connected in the aeration main pipe; the ultrasonic sensor and the flow sensor are electrically connected to the control system.

7. The activated sludge water treatment system according to claim 1, characterized in that: A water inlet is provided in the contact oxidation tank, a sludge zone is formed at the bottom of the contact oxidation tank, a temperature control component is provided above the sludge zone, the temperature control component includes a temperature sensor and a heating tube, and the temperature sensor and the heating tube are both connected to the contact oxidation tank; a plurality of perforated sludge discharge pipes are provided in the sludge zone; a plurality of perforated sludge discharge pipes are evenly distributed in the sludge zone, a plurality of evenly distributed perforations are provided at the bottom of the perforated sludge discharge pipe, a plurality of sludge discharge pipes are provided on the top side of the perforated sludge discharge pipe, one end of the sludge discharge pipe is connected to the perforated sludge discharge pipe, and the other end extends out of the contact oxidation tank; a recoil pipe is provided on the top side of the sludge discharge pipe, one end of the recoil pipe is connected to the sludge discharge pipe, and the other end extends to the top of the contact oxidation tank and is connected to a fan, a pneumatic valve and a manual valve are provided at the bottom of the recoil pipe, and a combined fiber filler is provided in the contact oxidation tank.

8. The activated sludge water treatment system according to claim 7, characterized in that: The smart filter tank includes a smart filter tank body, a sewage discharge area, a sedimentation area, a filtration area, a clean water area, a water inlet area and a water outlet area. The sewage discharge area, sedimentation area, filtration area and clean water area are arranged in the smart filter tank body from bottom to top in sequence. The water inlet area and the water outlet area are both arranged on the top of the smart filter tank body. A microfiltration membrane is arranged in the filtration area. A backwashing device is arranged above the smart filter tank body, and an ultrasonic generating device is arranged below the backwashing device; a partition wall is arranged on the top of the smart filter tank body, and the partition wall separates the water inlet area and the sewage discharge area; a water inlet is arranged on the water inlet, and a water inlet valve is arranged on the water inlet; the sedimentation area is provided with a sewage discharge outlet, and a sewage discharge valve is arranged on the sewage discharge outlet.

9. An activated sludge water treatment method, based on the activated sludge water treatment system according to claim 8, characterized in that: The activated sludge water treatment method comprises the following steps: S1: Microbial community sequencing analysis: The high-throughput sequencing analysis unit performs real-time sequencing analysis on the microbial community in the activated sludge to obtain information on the types and abundance of microorganisms, with a sequencing frequency of no less than once every 2 hours, to identify the proportion of filamentous bacteria; S2: Microbial warning trigger: The early warning trigger unit is connected to the high-throughput sequencing analysis unit. When the high-throughput sequencing analysis unit detects that the proportion of filamentous bacteria exceeds 20% or other preset flora imbalance indicators, a signal is sent to the early warning trigger unit, and the early warning trigger unit triggers an early warning signal; S3: Microbiological data collection: The microbial data collection unit collects and stores historical data and real-time monitoring data of influent water quality and water quantity; S4: Aeration control: According to the data collected by the microbial data collection unit, when it is predicted that toxic and harmful substances flow in or the water inlet load increases, the control system controls the aeration mechanism to automatically and appropriately increase the aeration intensity, so that the dissolved oxygen level is increased by 1-2 mg / L on the original basis, thereby stimulating the stress response of the microorganisms and ensuring the activity of the microorganisms; S5: Addition of microbial agents: The microbial agent adding unit adds the microbial agent according to the imbalance of the microbial community monitored by the microbial community monitoring module; S6: Sewage drainage and sludge return: The return sludge in the intelligent filter tank enters the contact oxidation tank from the inlet pipe of the contact oxidation tank and becomes sewage in the contact oxidation tank. The sewage flows downward through the combined fiber filler to reach the sludge sedimentation area. The contact oxidation tank blocks the sludge. Due to the blocking effect of the contact oxidation tank, the sewage passes through the water outlet, flows upward through the combined fiber filler again to reach the pool surface, and then is discharged to the water inlet of the intelligent filter tank through the outlet pipe. The sewage enters the water inlet area through the water inlet of the intelligent filter tank, and then enters the sedimentation area, flows upward through the filtration area and the filtration device to reach the clean water area, and then reaches the outlet area for discharge. A large amount of sludge in the sewage is intercepted, enters the sewage outlet through the sedimentation area, and then flows back to the contact aerobic tank inlet pipe through the sewage outlet to form a cycle. S7: Biochemical reaction and sludge removal steps: The return sludge in the intelligent filter tank is introduced into the contact oxidation tank from the water inlet pipe of the contact oxidation tank, and aerobic reaction is carried out in the combined fiber filler to remove organic matter in the sludge. The oxygen for the aerobic reaction is provided by the aeration main pipe and the aeration branch pipe. The supernatant is discharged to the water inlet of the intelligent filter tank through the outlet pipe, and the sludge enters the sludge area. After the sludge is precipitated, it enters the perforated sludge discharge pipe and then enters the sludge discharge pipe. The backwash pipe is controlled by a pneumatic valve and a manual valve, and air backwashing and sludge discharge are automatically performed regularly to discharge the sludge from the sludge discharge pipe outside the contact oxidation tank.

10. The method for treating activated sludge water according to claim 9, characterized in that: Sewage enters the water inlet area of ​​the intelligent filter tank and flows upward through the sedimentation area, filtration area, filtration device, and clean water area in sequence. The sedimentation area, filtration area, and filtration device intercept and filter the sewage in turn. A large amount of sludge is intercepted and precipitated in the sedimentation area at the bottom of the intelligent filter tank. The sludge is then continuously returned to the contact oxidation tank inlet pipe through the sewage discharge area. The sewage is intercepted and filtered and then flows through the clean water area.

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