Preposed liquid quality control application system for on-line automatic monitoring of inlet water of sewage treatment plant

Abstract

The utility model discloses an inlet water on-line automatic monitoring front liquid quality control application system for a sewage treatment plant. The inlet water on-line automatic monitoring front liquid quality control application system comprises a sink-float body device, a water diversion energy accumulator, a fiber flocculation filtering device, a water storage tank and an on-line pollution source automatic monitoring device, the sink-float body device is arranged in a water storage tank at the rear end of the grit chamber; a water outlet of the sink-float body device is communicated with a water inlet of the water diversion energy accumulator through a first water outlet pipe; a water outlet of the water diversion energy accumulator is communicated with a water inlet of the fiber flocculation filtering device through a second water outlet pipe; a water outlet of the fiber floc filtering device is communicated with a water inlet of the water storage tank through a third water outlet pipe; and a water outlet of the water storage tank is communicated with the on-line pollution source automatic monitoring device through a fourth water outlet pipe. According to the utility model, the on-line monitoring instrument is effectively protected and prevented from being polluted and blocked for maintenance, the effectiveness and transmission rate of data monitoring are improved, meanwhile, sampling components are greatly stabilized, accurate sampling is achieved, and the precision and accuracy of monitoring data are improved.

Description

Technical Field

[0001] The utility model relates to a pre-liquid quality control system for automatically monitoring online pollution sources of influent water in urban sewage treatment plants, and more specifically, to an application system for automatically monitoring online pollution sources of influent water in sewage treatment plants. Background Art

[0002] When sewage treatment plants use online automated monitoring instruments for continuous sampling, impurities such as fiber debris and inorganic grit in the sampled liquid can easily cause physical damage to delicate components such as probes and sensors. Fiber debris can become entangled in the probe surface, preventing adequate contact with the sewage and resulting in inaccurate measurements. Inorganic grit, under the impact of the water flow, can abrade the probe and the inner wall of the pipe, shortening the instrument's service life. Fiber flocs and fiber debris in sewage have strong adsorption properties and can absorb pollutants, altering their distribution and concentration. This can cause the monitoring instrument's measurements to misrepresent the actual pollution level. Inorganic grit can interfere with the instrument's measurement principles, such as by affecting light propagation in optical measurements or electrode signals in electrical measurements, thereby impacting measurement accuracy. Fiber debris and inorganic grit can easily accumulate and clog the sampling pipes, disrupting the flow of sewage and causing discontinuous or even impossible sampling. This not only interrupts monitoring data and affects real-time monitoring of the sewage treatment plant's influent conditions, but can also overload and damage equipment such as sampling pumps. This ultimately leads to a decrease in the data transmission rate of the environmental monitoring platform. Due to the impact of these fibrous waste and inorganic grit in sewage on monitoring instruments and sampling systems, the instruments and pipelines need to be cleaned, maintained, and calibrated frequently.

[0003] There are currently two solutions:

[0004] The first method is to directly extend the sampling tube of the pollution source automatic monitoring equipment below the liquid level of the urban sewage treatment plant inlet network, and directly extract urban sewage through the instrument sampling pump and enter the online monitoring instrument group for monitoring and analysis.

[0005] However, this instrument sampling and monitoring method is restricted by factors such as the size of pollutant particles in the urban sewage network, the length of fibers, and the shape of flocs. Sampling pipelines are frequently blocked by pollutants, and even the sampling pump may malfunction and be damaged, resulting in sampling interruption. This affects the continuity of online instruments and the data transmission rate of the national and local environmental protection control platforms, ultimately affecting the credibility of the entire sewage treatment plant operation evaluation.

[0006] The second method, at the current technical level, is to cover the outside of the sampling pump of the water inlet online instrument with a customized mesh cover to intercept particulate suspended garbage and fiber flocs in the sewage.

[0007] However, these pollutants in the sewage continuously flow into the sewage treatment plant through the urban sewage pipe network, and the mesh covering the outside of the sampling pump is frequently clogged with dirt, which seriously restricts the stability of continuous sewage sampling and monitoring. The garbage blocking the mesh must be frequently cleaned by manual labor, which greatly increases the labor intensity of the operating personnel and the quality of the on-site working environment, and brings many adverse factors to the occupational health of the sewage treatment plant operators and the clean production of the enterprise.

[0008] In short, the impact of these pollutants such as garbage, fiber, inorganic matter, etc. in sewage on the sewage treatment plant inlet water online instrument monitoring system is summarized as follows:

[0009] 1) The presence of fiber greatly affects the fluidity and mixing degree of sewage, making the sewage composition at different stages uneven, further affecting the representativeness and accuracy of the measurement.

[0010] 2) The entanglement and aggregation of these fibers can easily affect the flow rate and pressure in the sampling pipeline, thereby affecting the hydraulic conditions of the entire monitoring system. Unstable hydraulic conditions may cause fluctuations in instrument measurement results, reducing data reliability and threatening the long-term stable operation of the system.

[0011] 3) During the continuous sampling of sewage, fibers are easily entangled in the probe and pipe, making cleaning difficult. Special tools and methods are required for cleaning, such as chemical cleaning and high-pressure water gun flushing, which increases the complexity and cost of maintenance work.

[0012] However, both of the above solutions have many technical and management flaws:

[0013] 1. Technical flaws

[0014] 1) Serious blockage and wear problems

[0015] Fiber flocs in sewage can easily become entangled and accumulated in sampling pipes, instrument probes, and valves, causing blockages and hindering the normal flow of sewage. This prevents the instrument from obtaining samples in a timely and accurate manner, resulting in missing or distorted measurement data. Long-term fiber accumulation can also entangle and bind mechanical components of instruments, such as agitators and pumps, affecting their normal operation and increasing the risk of equipment failure.

[0016] The inorganic sand and gravel in sewage has a high hardness. Driven by the water flow, it will cause wear to the sampling pipes, sensitive components and sensors inside the instrument, destroy their surface structure and accuracy, shorten the service life of the instrument, and affect the accuracy and stability of the measurement.

[0017] 2) Interference with measurement accuracy

[0018] Fiber flocs distributed in sewage have a large specific surface area and easily absorb pollutants in the sewage, thereby changing the distribution and concentration of various components in the sewage. During the testing process, this will cause the pollutant concentration measured by the instrument to deviate from the actual concentration in the sewage, affecting the accurate assessment of sewage quality.

[0019] Inorganic sand and gravel, affected by surface runoff, may interfere with certain instruments using optical or electrical measurement principles. For example, when measuring turbidity using optical methods, the presence of inorganic sand and gravel can alter the light scattering and absorption characteristics, resulting in inaccurate turbidity values. For instruments using electrical principles, inorganic sand and gravel can affect the electric field distribution on the electrode surface, thereby affecting measurement accuracy.

[0020] 3) Insufficient sampling representativeness

[0021] These fiber flocs are unevenly distributed in the sewage and easily aggregate to form clumps, resulting in the sewage samples extracted by online instruments not being able to truly reflect the water quality of the overall sewage, making the measurement results unrepresentative and unable to provide an accurate basis for adjusting the sewage treatment process.

[0022] The sedimentation characteristics of inorganic gravel in the pipe network in sewage will cause the gravel content in the bottom sewage to be relatively high. The sampling port of the online instrument is usually located at a certain depth. If this factor is not taken into account, the gravel content in the collected sample may be too high, which cannot represent the average water quality of the sewage and affect the accurate judgment of the sewage quality.

[0023] Second, deficiencies in management

[0024] 1) Increased difficulty in maintenance and management

[0025] These fiber flocs from wastewater require more frequent manual cleaning and maintenance of online instruments and sampling systems to prevent fiber clogging. This cleaning process is complex, time-consuming, and labor-intensive, and improper cleaning can damage the instruments. This increases the workload and difficulty for maintenance personnel, and untimely maintenance can also affect the normal operation of the instruments.

[0026] The inorganic sand and gravel mixed in sewage accounts for about 0.03L / m2 of urban sewage. 3 Instrument wear requires regular inspection and assessment to detect and replace damaged parts promptly. However, because grit wears instruments gradually, it is difficult to detect in time. This can easily lead to instrument failure if not maintained in time, affecting the continuity of testing work.

[0027] 2) Calibration and verification work is complicated

[0028] Due to the impact of fiber flocs on measurement accuracy, online instruments require more frequent calibration and verification to ensure accurate measurement data. However, in practice, the calibration process may be interfered with by fiber flocs, resulting in inaccurate results. Additional measures are required to eliminate this influence, increasing the complexity and difficulty of the calibration work.

[0029] The interference of inorganic particles on measurement accuracy also complicates the calibration and verification of instruments. During the calibration process, it is necessary to consider the impact of sand on the measurement results and select appropriate calibration methods and standard solutions to ensure the accuracy and reliability of the calibration.

[0030] 3) Challenges in monitoring data reliability management

[0031] The distortion and underrepresentation of measurement data caused by fiber flocs pose challenges to data reliability management. During data review and analysis, abnormal data due to fiber flocs must be identified and eliminated, increasing the workload and difficulty of data processing. Furthermore, ensuring data accuracy and reliability to provide effective data support for wastewater treatment plant operations and management remains a challenge.

[0032] Inorganic grit in wastewater can also interfere with measurement accuracy and affect data reliability. During data management, errors caused by this influence must be evaluated and corrected to improve data quality. Furthermore, a comprehensive data quality control system must be established to strengthen the review and oversight of online instrumentation data to ensure its authenticity and validity. Utility Model Content

[0033] In response to the defects in the existing technology, the purpose of this utility model is to provide an online automatic monitoring and pre-liquid quality control application system for the inlet water of a sewage treatment plant, which effectively protects the online monitoring instruments from being blocked by dirt and maintenance, improves the effectiveness and transmission rate of data monitoring, and also greatly stabilizes the sampling components, achieves accurate sampling, and improves the accuracy of monitoring data.

[0034] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0035] An online automatic monitoring and pre-liquid quality control application system for influent in sewage treatment plants, comprising a sink-float device, a water diversion accumulator, a fiber floc filter device, a water storage tank, and an online pollution source automatic monitoring device;

[0036] The sink-float body device is arranged in the water storage tank of the grit chamber;

[0037] The water outlet of the sink-float body device is connected to the water inlet of the water diversion accumulator through a first water outlet pipe;

[0038] The water outlet of the water diversion accumulator is connected to the water inlet of the fiber floc filtering device through a second water outlet pipe;

[0039] The water outlet of the fiber floc filtering device is connected to the water inlet of the water storage tank through a third water outlet pipe;

[0040] The water outlet of the water storage tank is connected to the online pollution source automatic monitoring device through a fourth water outlet pipe;

[0041] The water diversion accumulator, the fiber floc filtering device, the water storage tank, and the online pollution source automatic monitoring device are all provided with a vent pipe connected to the sewage well.

[0042] Preferably, the water outlet of the sink-float body device is connected to the first water outlet pipe through a hose;

[0043] Both ends of the hose are connected to the water outlet of the sink-float body device and the first water outlet pipe through quick connectors.

[0044] Preferably, the first water outlet pipe is connected to the water inlet of the water diversion accumulator through a pipeline compensator and a special-shaped reducing pipe;

[0045] The water diversion accumulator is also provided with an exhaust mechanism, a water injection mechanism and a level meter.

[0046] Preferably, an overhead bracket is provided at the bottom of the water diversion accumulator.

[0047] Preferably, the fiber floc filtration device is divided into zone I, zone II and zone III;

[0048] The water outlet of the water diversion accumulator is connected to the water inlet of the zone I through a second water outlet pipe;

[0049] The overflow pipe and water outlet are provided near the top of zone I;

[0050] An arc-shaped sieve-gap filtering device is provided on the top of the zone II, and the arc-shaped sieve-gap filtering device is located below the water outlet of the zone I;

[0051] The III zone is used to intercept the flocs filtered by the arc-shaped sieve filter device;

[0052] The third water outlet pipe is communicated with the zone II.

[0053] Preferably, two filter screens are provided in the water tank to divide the water tank into a first zone, a second zone and a third zone;

[0054] The third water outlet pipe is in communication with the first zone;

[0055] The third zone is communicated with the fourth water outlet pipe.

[0056] Preferably, the fourth water outlet pipe is provided with an outlet valve, a fluid observation mirror, a Y-type filter, a liquid flow meter and an online instrument water pump in sequence along the medium flow direction.

[0057] The utility model provides an online automatic monitoring and pre-liquid quality control application system for influent in sewage treatment plants, which has the following beneficial effects:

[0058] 1) Protect online instruments

[0059] 1.1) Prevent clogging and damage, effectively intercept fiber flocs and gravel garbage to prevent them from entering the online instrument, prevent the sensor from being blocked, worn or damaged, extend the service life of the instrument, and reduce maintenance and replacement costs;

[0060] 1.2) Ensure measurement accuracy and provide relatively clean inlet water for online instruments, so that the instruments can more accurately measure various parameters of sewage, such as chemical oxygen demand, ammonia nitrogen, pH, etc., providing a reliable basis for precise control of the sewage treatment process.

[0061] 2) Stable operation process

[0062] 2.1) Improve pumping efficiency, prevent the pumping system from being blocked by fiber flocs and gravel garbage, ensure the continuity and stability of pumping, ensure that sewage can be stably supplied to online instruments, and avoid the normal operation of instruments affected by insufficient or interrupted water supply;

[0063] 2.2) Reduce the frequency of failures. The equipment itself has a reasonable structure and may be equipped with functions such as automatic cleaning, which reduces the probability of equipment failure due to impurity accumulation, improves the stability and reliability of the entire system operation, and reduces the risk of sewage treatment plant operation interruption or reduced treatment effect due to equipment failure.

[0064] 3) Optimize processing effect

[0065] 3.1) Improve pretreatment quality. As a pretreatment step in sewage treatment, this equipment can effectively remove fiber flocs and grit from sewage, reducing the load on subsequent treatment processes, such as biological treatment units and deep treatment units, thereby improving the efficiency and effectiveness of the entire sewage treatment system.

[0066] 3.2) Protect subsequent equipment, avoid the adverse effects of fiber flocs and gravel garbage on subsequent treatment equipment such as wear and blockage, protect the normal operation of equipment such as aeration equipment, sludge pumps, and filtration devices, reduce equipment maintenance costs, improve equipment operating efficiency, and help achieve stable and standard emissions from sewage treatment plants.

[0067] 4) Easy to maintain and manage

[0068] 4.1) Reduce the difficulty of cleaning. Compared with traditional interception methods, the equipment may adopt a more convenient cleaning structure design or be equipped with an automatic cleaning device, which reduces the workload and difficulty of manual cleaning and reduces the labor intensity and work risks of operators;

[0069] 4.2) Easy to monitor and operate, manual inspections can be conducted in real time to monitor the equipment's operating status, such as flow rate and mesh blockage level, and the equipment's operating mode can be automatically adjusted according to preset parameters, improving management convenience and efficiency.

[0070] 5) Environmental benefits

[0071] 5.1) Preventing secondary pollution: By effectively intercepting and removing fiber flocs and gravel garbage, these impurities are prevented from re-entering the water body during the sewage treatment process or accumulating in the treatment plant to produce odor and breed bacteria, thereby reducing secondary pollution to the environment and protecting the surrounding ecological environment;

[0072] 5.2) Resource recycling and utilization: the intercepted fiber flocs and gravel garbage can be classified, collected and processed, and some fiber flocs can be recycled and reused to achieve resource recycling and meet the requirements of sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 This is a structural diagram of the utility model's online automatic monitoring and pre-liquid quality control application system for water inlet;

[0074] Figure 2 yes Figure 1 Enlarged schematic diagram of position A in the middle. DETAILED DESCRIPTION

[0075] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0076] Combine Figure 1 and Figure 2 As shown, the utility model provides an online automatic monitoring and pre-liquid quality control application system for water inlet of a sewage treatment plant, comprising a sink-float body device 1, a water diversion accumulator 2, a fiber floc filtering device 3, a water storage tank 4 and an online pollution source automatic monitoring device 5.

[0077] The sink-float body device 1 is arranged in the water storage tank 1401 at the rear end of the grit chamber 14 .

[0078] The water outlet on the sink-buoy body device 1 is connected to the water inlet on the water diversion accumulator 2 through the first water outlet pipe 6 .

[0079] The water diversion accumulator 2 is installed at a position lower than the grit chamber 14 , and the water outlet on the water diversion accumulator 2 is connected to the water inlet on the fiber floc filtering device 3 through the second water outlet pipe 7 .

[0080] The water outlet on the fiber floc filtering device 3 is connected to the water inlet on the water storage tank 4 through the third water outlet pipe 8.

[0081] The water outlet of the water storage tank 4 is connected to the online pollution source automatic monitoring device 5 through the fourth water outlet pipe 9.

[0082] The water diversion accumulator 2 , the fiber floc filtering device 3 , the water storage tank 4 and the online pollution source automatic monitoring device 5 are all provided with a vent pipe 11 connected to the sewage well 10 .

[0083] The water outlet of the sink-buoy body device 1 is connected to the first water outlet pipe 6 through a hose 12 .

[0084] Both ends of the hose 12 are connected to the water outlet of the sink-buoy body device 1 and the first water outlet pipe 6 through quick connectors 13 .

[0085] The first water outlet pipe 6 is connected to the water inlet on the water diversion accumulator 2 through the pipeline compensator 15 and the special-shaped reducing pipe 16.

[0086] The water diversion accumulator 2 is also provided with an exhaust mechanism 201 , a water injection mechanism 202 and a level meter 203 .

[0087] An overhead support 204 is provided at the bottom of the water diversion accumulator 2 .

[0088] The fiber floc filtering device 3 is divided into zone I 301 , zone II 302 and zone III 303 .

[0089] The second water outlet pipe 7 is connected to the zone I 301 . An overflow pipe 304 and a water outlet are provided near the top of the zone I 301 . The overflow pipe 304 is connected to the sewage well 10 .

[0090] An arc-shaped sieve gap filtering device 305 is provided on the top of the II zone 302 , and the arc-shaped sieve gap filtering device 3 is located below the water outlet of the I zone 301 .

[0091] Zone III 303 is used to intercept the flocs 306 filtered on the arc-shaped sieve filter device 305.

[0092] The third water outlet pipe 8 is connected to zone II 302 .

[0093] Venting pipes 11 are provided on zone I 301 , zone II 302 and zone III 303 of the fiber floc filtering device 3 .

[0094] Two filter screens 401 are provided in the water tank 4 to divide the water tank 4 into a first zone, a second zone and a third zone in sequence along the medium flow direction.

[0095] The third water outlet pipe 8 and the drain pipe 11 of the water tank 4 are connected to the first area of ​​the water tank 4.

[0096] The third area of ​​the water storage tank 4 is communicated with the fourth water outlet pipe 9 .

[0097] An outlet valve 17, a fluid observation mirror 18, a Y-type filter 19, a liquid flow meter 20 and an online instrument water supply pump 21 are sequentially arranged on the fourth water outlet pipe 9 along the medium flow direction.

[0098] The working process of the utility model's online automatic monitoring and pre-liquid quality control application system for water inlet is as follows:

[0099] After passing through the coarse screen and fine screen, the urban sewage intercepts the coarse, medium and fine flocs of garbage suspended in the water and enters the grit chamber 14. After the grit chamber 14 completes the goal of removing larger inorganic particles, the sewage enters the outlet trough 1401 at the rear end of the grit chamber 14.

[0100] The sink-float body 1 is provided in the outlet tank 1401. Water is added to the water inlet 101 of the sink-float body 1 to adjust the sink-float body 1, ensuring that the sink-float body 1 is in a stable floating state in the outlet tank 1401 and can float up and down with changes in the water level. A water suction port 102 is provided at the bottom middle of the sink-float body 1, through which the sewage after sedimentation is sucked in. The water outlet of the sink-float body 1 is connected to a hose 12. The purpose of the hose 12 is to ensure a certain floating space when the liquid level in the outlet tank 1401 changes. When the hose 12 is filled with liquid, it enters the first outlet pipe 6 under the action of siphon, and the first outlet pipe 6 transmits the pre-treated sewage to the inside of the water diversion accumulator 2.

[0101] A water injection mechanism 202 is installed on the top of the water diversion accumulator 2. This mechanism is connected to the nearest reclaimed water supply system within the plant, meeting the purpose of initially charging the water diversion accumulator 2 with liquid energy. During the initial reclaimed water filling stage, the water is exhausted through the exhaust mechanism 201 on the top of the water diversion accumulator 2. After the water diversion accumulator 2 is filled with reclaimed water, the exhaust mechanism 201 is closed. The water diversion accumulator 2 is fixed at a height determined by the level meter 203. An overhead bracket 204 is installed at the bottom of the water diversion accumulator 2 to support the water diversion accumulator 2 at a height of 2.9 meters. At the same time, a vent pipe 11 is also installed at the bottom of the water diversion accumulator 2 to drain the water in the water diversion accumulator 2 into the sewage well 10 when the water diversion accumulator 2 requires maintenance.

[0102] The outlet water of the water accumulator 2 enters zone I 301 of the fiber floc filter device 3 through the second outlet pipe 7. When the liquid level of zone I 301 is full, the sewage overflows from the outlet at the top and passes through the arc-shaped sieve filter device 305. The micro-flocs and inorganic gravel in the sewage are intercepted and filtered on the arc-shaped sieve filter device 305. At the same time, under the action of gravity, the sewage automatically slides to the top of zone III 303 and stays at this position. The water in the flocs is filtered out through the horizontal partition and finally discharged into the sewage well 10 through the vent pipe 11 of the fiber floc filter device 3.

[0103] After separation by the curved sieve filter 305, the wastewater enters zone II 302. Zone II 202 is connected to a water storage tank 4 via a third outlet pipe 8. Based on gravity flow elevation calculations, the water storage tank 4 is located above ground level. Two filter screens 401 are installed within the water storage tank 4, serving as a safety feature for pre-filter maintenance. This ensures that maintenance of the fiber floc filter 3 does not affect the online, high-quality water intake of the instrument.

[0104] When the water tank 4 is filled with the micro-flocs after interception and filtration, the outlet valve 17 is opened, and the sewage in the water tank 4 flows along the horizontally arranged fourth outlet pipe 9 through the liquid observation mirror 18, satisfying the operator's monitoring of sewage quality, and then flows through the Y-type filter 19. The Y-type filter 19 can act as the last line of defense for security interception of the last level of micro-flocs and the fifth level of gravel in the system. The liquid flow meter 20 is the basis for the operation and maintenance personnel to determine whether the sewage flow can continuously meet the operation requirements of the online instrument water pump 21.

[0105] The online instrument water supply pump 21 is one of the public auxiliary equipment supporting the online pollution source automatic monitoring device 5. It continuously sends the sewage after the flocs that affect the instrument accuracy monitoring are fully intercepted into the online pollution source automatic monitoring device 5. The wastewater monitored by the online pollution source automatic monitoring device 5 is finally discharged into the sewage well 10 through the vent pipe 11 of the online pollution source automatic monitoring device 5.

[0106] Ultimately, the goal was to ensure continuous automatic sampling by the online automatic monitoring instrument in urban sewage treatment plants, ensure the practical application of high-quality control of the sampling liquid, greatly stabilize the sampling components, achieve accurate sampling, and improve the accuracy of monitoring data.

[0107] This utility model utilizes a pre-liquid quality control system for online automatic monitoring of incoming water, employing a structural design based on the sink-and-float principle. The sink-and-float unit 1 is a simple device capable of sinking and floating in liquids, primarily based on Archimedes' principle and Pascal's law. When an object is immersed in liquid, the buoyancy experienced by the sink-and-float unit 1 is equal to the weight of the displaced liquid. During the sampling phase, the depth stratification of the sample is controlled by the sink-and-float unit 1, resolving the technical challenges of stratified sampling.

[0108] Taking advantage of the fact that the working water level of grit chamber 14 is above ground level, this new system for automatically monitoring and controlling pre-liquid quality in water utilizes the siphon principle to divert high-head sewage from higher ground to the lower-lying water diversion accumulator 2 without requiring additional power. This ensures continuous and stable extraction of urban sewage for sampling and monitoring. This process not only reduces the energy waste associated with traditional sampling pumps but also ensures a continuous, efficient, and stable sewage flow pattern, ensuring the smooth operation of subsequent processing units in this system.

[0109] When air or liquid containing lint passes through the fiber floc filter 3, it first encounters the arc-shaped sieve filter 305. Due to their large size and irregular shape, lint and other impurities cannot pass through the tiny pores of the arc-shaped sieve filter 305 and are trapped on the surface or inside of the arc-shaped sieve filter 305. As more lint is trapped, the resistance of the arc-shaped sieve filter 305 gradually increases. However, as long as the pressure difference between the inlet and outlet is large enough, the air or liquid can continue to pass through the arc-shaped sieve filter 305, and the lint is effectively removed, thereby achieving filtration and purification of the air or liquid, effectively solving the problem of effectively removing micro-flocs and micro-particles, and fundamentally eliminating the adverse effects of lint and inorganic particles on the online instrument group.

[0110] Two filter screens 401 are provided in the water tank 4 of the utility model's online automatic monitoring and pre-liquid quality control application system for water inlet, dividing the water tank 4 into three compartments, which not only further ensures the effective interception and filtration of micro-flocs, but also further stabilizes the stability of the instrument water supply buffer.

[0111] In summary, the utility model of the online automatic monitoring and pre-liquid quality control application system for influent water can effectively reduce damage to the monitoring instrument, ensure the normal operation and measurement accuracy of the instrument, and reduce the maintenance and replacement costs of the equipment. It can remove interference factors and make the sewage samples entering the monitoring instrument more representative, thereby improving the accuracy and reliability of the monitoring data and providing a more accurate basis for the operation and management of the sewage treatment plant. It can effectively prevent the occurrence of blockage problems, ensure the stable operation of the sampling system, and ensure the continuity of the monitoring work. Reduce maintenance workload. These impurities can be reduced from entering the sampling system at the source, thereby reducing the frequency and difficulty of maintenance, reducing the workload of maintenance personnel, and improving work efficiency. It also helps to extend the service life of the monitoring instrument and the sampling system.

[0112] Accurate and reliable influent water quality monitoring data is the foundation for optimizing process control in sewage treatment plants. This new online automatic influent monitoring pre-liquid quality control application system intercepts impurities and improves the quality of monitoring data. This allows sewage treatment plants to more accurately understand changes in influent water quality and promptly adjust sewage treatment process parameters, such as aeration volume and sludge return volume, to ensure optimal sewage treatment results, improve sewage treatment efficiency, and reduce operating costs. This also helps better meet environmental emission standards and create a more benign sewage treatment system.

[0113] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. An online automatic monitoring and pre-liquid quality control application system for influent in sewage treatment plants, characterized by: It includes a sink-float device, a water diversion accumulator, a fiber floc filtering device, a water storage tank and an online pollution source automatic monitoring device; The sink-float body device is arranged in the water storage tank at the rear end of the grit chamber; The water outlet of the sink-float body device is connected to the water inlet of the water diversion accumulator through a first water outlet pipe; The water outlet of the water diversion accumulator is connected to the water inlet of the fiber floc filtering device through a second water outlet pipe; The water outlet of the fiber floc filtering device is connected to the water inlet of the water storage tank through a third water outlet pipe; The water outlet of the water storage tank is connected to the online pollution source automatic monitoring device through a fourth water outlet pipe; The water diversion accumulator, the fiber floc filtering device, the water storage tank, and the online pollution source automatic monitoring device are all provided with a vent pipe connected to the sewage well.

2. The system for online automatic monitoring of influent water and pre-liquid quality control for a sewage treatment plant according to claim 1 is characterized by: The water outlet of the sink-float body device is connected to the first water outlet pipe through a hose; Both ends of the hose are connected to the water outlet of the sink-float body device and the first water outlet pipe through quick connectors.

3. The online automatic monitoring and pre-liquid quality control application system for influent in a sewage treatment plant according to claim 1 is characterized by: The first water outlet pipe is connected to the water inlet of the water diversion accumulator through a pipeline compensator and a special-shaped reducer; The water diversion accumulator is also provided with an exhaust mechanism, a water injection mechanism and a level meter.

4. The system for online automatic monitoring and pre-liquid quality control of influent for a sewage treatment plant according to claim 3 is characterized by: An overhead bracket is provided at the bottom of the water diversion accumulator.

5. The online automatic monitoring and pre-liquid quality control application system for influent of a sewage treatment plant according to claim 1 is characterized by: The fiber floc filtration device is divided into zone I, zone II and zone III; The water outlet of the water diversion accumulator is connected to the water inlet of the zone I through a second water outlet pipe; The overflow pipe and water outlet are provided near the top of zone I; An arc-shaped sieve-gap filtering device is provided on the top of the zone II, and the arc-shaped sieve-gap filtering device is located below the water outlet of the zone I; The zone III is used to intercept the flocs filtered by the arc-shaped sieve filter device; The third water outlet pipe is communicated with the zone II.

6. The system for online automatic monitoring and pre-liquid quality control of influent for a sewage treatment plant according to claim 5 is characterized by: Two filter screens are provided in the water tank to divide the water tank into a first zone, a second zone and a third zone; The third water outlet pipe is in communication with the first zone; The third zone is communicated with the fourth water outlet pipe.

7. The system for online automatic monitoring and pre-liquid quality control of influent for a sewage treatment plant according to claim 6 is characterized by: The fourth water outlet pipe is provided with an outlet valve, a fluid observation mirror, a Y-type filter, a liquid flow meter and an online instrument water pump in sequence along the medium flow direction.

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