63 results about "Wastewater systems" patented technology

The invention discloses a method and equipment for generating a schematic diagram of a sewage and wastewater system, and a medium, and relates to the technical field of electric digital data processing. The method comprises the following steps: identifying a sewage and wastewater pipeline corresponding to a sewage and wastewater system in a three-dimensional model, and determining a pipeline type corresponding to the sewage and wastewater pipeline according to a topological relation of the sewage and wastewater pipeline; wherein the pipeline type comprises a vertical pipe main pipe, a transverse pipe main pipe and an appliance branch pipe; reading elevation information in a link model of the three-dimensional model, and generating elevation lines and elevation names corresponding to the elevation lines based on a base point selected by a user according to the elevation information; taking the first elevation line as a drawing starting point, and generating a pipeline graph line corresponding to each pipeline type; and generating an end equipment legend connected with the pipeline graph line at a preset position of the pipeline graph line, and carrying out pipe diameter labeling and stand pipe number labeling on the pipeline graph line to obtain a schematic diagram corresponding to the sewage and wastewater system.

The utility model discloses a high-efficiency heat exchange device of a pure waste water system, and relates to the technical field of heat exchangers, the high-efficiency heat exchange device comprises a box body, heat exchange pipes and joint cavities, a plurality of heat exchange pipes are arranged in the box body, the joint cavities are arranged at the two ends of the box body, the corresponding joint cavities are communicated with the ends of the heat exchange pipes, and the joint cavities are further connected with corresponding water inlet / outlet pipes. The cleaning device is characterized in that a cleaning agent inflow assembly and a cleaning agent outflow assembly are arranged in connector cavities in the two ends of the box body respectively; the cleaning agent inflow assembly and the cleaning agent outflow assembly are respectively in driving connection with the corresponding action driving mechanisms; and the action driving mechanism can enable the cleaning agent inflow assembly, the heat exchange tube and the cleaning agent outflow assembly to be connected or disconnected. The heat exchange tube to be cleaned is switched under the condition that the heat exchange process is not affected, deposition of microorganisms and / or dirt in the heat exchange tube caused by a waste water heat medium is avoided, and the heat exchanger does not need to be disassembled frequently.

An embodiment of a system includes a pipeline of a wastewater system, an equalization tank that is configured to receive wastewater from the pipeline, and a return line extending from the equalization tank to the pipeline. In addition, the system includes an electricity generation assembly in fluid communication with the return line that is configured to generate electrical power using a flow of wastewater through the return line. The electricity generation assembly includes a flow channel, a water wheel that is partially inserted into the flow channel such that a portion of the water wheel is extended outside of the flow channel, and an electrical generator connected to the water wheel.

The embodiment of the application provides a desulfurization wastewater treatment system and method, and relates to the technical field of wastewater treatment. According to the desulfurization wastewater treatment system, a triple box assembly, a storage assembly, a feeding assembly, a pollution discharge assembly and a stirring assembly are included. The triple box assembly includes a purification box. The storage assembly is fixedly installed on the top and the front end of the purification box. The feeding assembly is arranged at the bottom of the purification box. The feeding assembly includes a driving member for power driving and a lead screw member for transmission. Through the transformation of the desulfurization wastewater system, the original desulfurization wastewater treatment system is changed into a triple box direct medicine supply, and a high-efficiency wastewater removal agent is used to replace the original medicine. After the system transformation, the heavy metal and COD content can be effectively removed, the desulfurization wastewater can be discharged up to the standard, the wastewater zero discharge can be realized, the wastewater purification efficiency is improved, and the cost input of the factory desulfurization wastewater is reduced.

Surface cleaning device, characterized in that it comprises: a cleaning base for contacting surfaces within an environment to be cleaned; a rechargeable battery to supply the surface cleaning device with operating energy; a vacuum source; a wastewater system that is fluidically connected to the vacuum source and includes a container for wastewater; a liquid detector positioned within the dirty water container, the liquid detector comprising an impeller assembly comprising a drive motor and an impeller rotated by the drive motor; and a control system connected to the impeller assembly for controlling the impeller assembly and for determining the fill level in the dirty water tank based on the current of the drive motor.

The invention discloses a composite microbial agent for degrading micro-plastics in seawater and a preparation method thereof, the microbial agent is composed of effective viable bacteria and auxiliary components, the effective viable bacteria are marine-derived halomonas, acinetobacter and bacillus and pseudomonas with high affinity with the micro-plastics, the effective viable bacteria are compounded according to a specific viable bacteria number ratio, and the microplastics are degraded by the auxiliary components. And function collaboration is realized. The auxiliary components comprise a protective agent consisting of trehalose, skimmed milk, glycerol and cane sugar, and a nutritional agent consisting of glucose and yeast extract. The preparation method comprises the following steps: respectively fermenting, centrifugally concentrating, compounding in proportion, mixing with auxiliary components, and finally drying to prepare powder. The invention further discloses application of the microbial inoculum to degradation of microplastics in beach intertidal zones and ship wastewater systems. The microbial agent is high in pertinence, good in stability in a high-salt seawater environment and high in degradation efficiency, and an effective solution is provided for in-situ bioremediation of marine micro-plastic pollution.

This utility model discloses a zero-discharge wastewater system for the tire industry, relating to the field of water treatment technology. The technical solution includes a first water treatment unit, a primary reverse osmosis unit, a primary reverse osmosis concentration unit, and a secondary reverse osmosis system for deep treatment. The first water treatment unit includes a raw water tank, a self-cleaning filter, an ultrafiltration system, and an ultrafiltration permeate buffer tank connected in sequence. The secondary reverse osmosis system for deep treatment treats the concentrated water from the second concentrated water tank using secondary reverse osmosis. By setting up a primary reverse osmosis unit, a primary reverse osmosis concentration unit, and a secondary reverse osmosis system for deep treatment, this application achieves high water utilization and low energy consumption requirements for the tire industry by treating the concentrated water from the second concentrated water tank using secondary reverse osmosis.

The application discloses a kind of dry treatment desulfurization wastewater system and process flow, high-temperature hot flue gas of boiler induced draft fan outlet is used, dust removal is entered into evaporator coil heat exchange to realize brine concentration, and cooperate with damper to realize temperature rise in evaporator and reach crystallization temperature requirement, by concentrated liquid direct injection high-temperature air duct to carry out vapor-solid separation, then into dryer to carry out gas-solid high-temperature cyclone separation.The application is more reasonable in arrangement, has lower maintenance cost, has wider applicability in finished product production, has higher economic benefit, especially avoids chloride crystalline salt pollution ash, so that ash and chloride crystalline salt can be collected and utilized separately.

The utility model discloses a peculiar smell control device of a laboratory wastewater system, and relates to the technical field of laboratory wastewater treatment. The peculiar smell control device of the laboratory wastewater system comprises a treatment box, an acid liquid storage cylinder and an alkaline liquid storage cylinder, a water inlet pipe is fixedly connected to the top of the treatment box, a supporting ring is fixedly connected to the inner surface of the treatment box, a supporting plate is arranged in a groove in the supporting ring, and balls are arranged on the inner surface of the groove of the supporting ring; a supporting frame is fixedly connected to the inner surface of the supporting plate, a water distribution plate is fixedly connected to the top of the supporting frame, a water pump, a pH meter and a water outlet pipe are arranged on the outer surface of the treatment box, a detection head is arranged on the outer surface of the pH meter, and the outer surfaces of the water outlet pipe and the detection head penetrate through the treatment box and extend into the inner cavity; according to the utility model, the peculiar smell in the wastewater can be fully treated, and the influence of excessive peculiar smell on human health is prevented.

The invention relates to a safety system (1) for a birthing pool device (100), the safety system comprising: an inlet unit (2); an outlet unit (12); a line system (3); a system separation device (4) for protecting against backflow into the drinking water supply system (101); a container device (5) for storing water; a sensor device (6) for detecting a water flow in the line system (3); a pump device (7) for conveying water from the container device (5) to the outlet unit (12); and a control device (10) for controlling the pump device (7) depending on a sensor signal from the sensor device (6). The control device (10) is suitable and designed for carrying out residual emptying by means of a safety device (8) depending on the water flow in the line system (3) detected by sensors and, for this purpose, for pumping the water out of the container device (5) and the second line region (23) into a waste water system (102) by means of the pump device (7).

This invention discloses an apparatus and method for reducing wastewater pressure fluctuations and extending equipment lifespan without interrupting production. The apparatus includes a wastewater end, with at least two sets of wastewater delivery pipelines and a tubular boiler delivery pipeline connected in parallel. A wastewater pump and a superheated water pump are respectively installed on the wastewater delivery pipelines and the tubular boiler delivery pipelines. Several branch pipelines are installed at the outlet end of the wastewater delivery pipelines, each branch pipeline equipped with a check valve. A bypass pipeline is installed between the wastewater delivery pipelines and the tubular boiler delivery pipelines, with a check valve on the bypass pipeline. The bypass pipeline is located between the wastewater pump and the superheated water pump. A PLC controller is electrically connected to a pressure tank, which is connected to the wastewater delivery pipelines via a pipeline. The outlet pressure of the superheated water pump is lower than the outlet pressure of the wastewater pump, forming a natural pressure relief channel to reduce the pressure within the wastewater system to a safe range.

The utility model relates to waste water system dosing block technical field, and disclose a device that prevents waste water system dosing block, including triplex box, the feeding port upper end of triplex box is provided with the clamping assembly that adds the fixed dosing feed pipe, be provided with the dosing assembly that adds the dosing to the waste water system on the clamping assembly, be provided with the air supply component that prevents the hot gas of triplex box to return to the channel on the dosing assembly, under the cooperation of screw, nut, blanking pipe, first arc clamp and second arc clamp, through the distance of adjusting blanking pipe and triplex box to reduce the influence of hot gas to blanking pipe, can also reduce the influence of hot gas to the upper end of blanking pipe with screw thread track, then open the valve on gasification air pipe, make the airflow pass through gasification air pipe and enter into blanking pipe, not only can increase the discharging rate still can push back hot gas, through the ball valve can carry out size adjustment to the air volume of gasification air pipe, satisfy the demand.

The invention provides a low-concentration waste water system of a ship laboratory, a low-concentration waste liquid collecting pool is arranged in the ship laboratory, and a water inlet end of a laboratory low-concentration waste water treatment device is connected with an outlet of the low-concentration waste liquid collecting pool through a pipeline; the water inlet end of the laboratory wastewater storage device is connected with the treated water outlet of the laboratory low-concentration wastewater treatment device through a pipeline; an inlet of the wastewater discharge pump is connected with an outlet of the laboratory wastewater storage device through a pipeline; the shore communicating device is connected with an outlet of the wastewater discharge pump; the movable storage tank is optionally connected to an outlet pipeline of the wastewater discharge pump; the ventilation devices are respectively arranged at the tops of the low-concentration waste liquid collecting tank, the laboratory low-concentration waste water treatment device and the laboratory waste water storage device, and are led above the deck through ventilation pipelines. According to the technical scheme, the problems of on-ship treatment, safe storage and compliant discharge of laboratory wastewater can be solved, and meanwhile, the operation convenience and environmental adaptability of the system are improved.

The invention discloses a catalyst for wastewater COD (Chemical Oxygen Demand) in-situ degradation and a preparation method of the catalyst, and belongs to the field of catalysts. A four-stage synergistic catalysis system of a metal phthalocyanine active matrix, a thiophene conjugated bridging chain, a cyclodextrin functional modification layer and a cross-linked network skeleton is adopted; the catalyst has the characteristics of controllable reaction path, designable product structure and efficient catalytic performance, a metal phthalocyanine compound matrix is used as a core active unit, a catalytic active center is formed through metal-nitrogen coordination, and a thienyl bridged ring structure is used as an electron transfer carrier, so that the catalytic activity of the catalyst is improved. A continuous electron channel for connecting a phthalocyanine active center and a cross-linked network is constructed through a conjugated system, electron migration is accelerated, a cyclodextrin functional modification layer serves as a performance optimization unit, and an adaptive bridge of the catalyst and a wastewater system is constructed through subject-object inclusion and hydrophilic modification, so that the performance of the catalyst is improved. Finally, a synergistic catalysis system with active center capable of efficiently generating active oxygen, conjugate bridging capable of guaranteeing electron transfer and cyclodextrin capable of optimizing application performance is formed.

The invention provides a treatment method of papermaking chemimechanical pulp wastewater. The treatment method comprises the following steps: carrying out air flotation treatment on the papermaking chemimechanical pulp wastewater by using an air flotation machine, and adding a chemical agent into the air flotation machine; mixing the chemimechanical pulp wastewater subjected to air flotation treatment with paper machine wastewater according to a preset proportion; and adding a flocculating agent into the mixed wastewater for precipitation. According to the papermaking chemimechanical pulp wastewater treatment method provided by the embodiment of the invention, the air flotation treatment section is added before preliminary precipitation, the chemical agent is added in the air flotation treatment process to adsorb suspended substances in the chemimechanical pulp wastewater, and adsorbed floccules are discharged through the air flotation section, so that the phenomenon of'floating sludge 'does not occur any more when the adsorbed floccules are mixed with paper machine wastewater subsequently; further, a flocculating agent can be continuously added into the primary sedimentation tank for flocculation and sedimentation, and a subsequent treatment process is carried out; the treatment method can greatly reduce the treatment pressure of the wastewater system and improve the treatment effect of the wastewater treatment system.

The linear floor drain with a raised strainer and sediment retention capability serves as an inlet drain for various wastewater systems (domestic, public, and industrial). In this invention, by increasing the slope of the internal surface of the drain body, raising the strainer (in a cylindrical shape), and adding rings around the strainer to block its holes and create a temporary water reservoir, it aims—compared with existing drains—to maximize water flow into the wastewater pipe with a defined amount of residue, while preventing the entry of any solid materials and substances denser than water into the wastewater system.

Vacuum pump (1), in particular a self-priming vacuum pump (1), as a component of a vacuum wastewater system for emptying and flushing toilets, urinals and the like, with a collecting inlet line (3a) which is connected to an inlet (3b) in a housing (2) of the vacuum pump (1) and which is closed inside the housing (2) by a check valve (6) when the vacuum pump (1) is not in operation, optionally with a cutting device which is axially arranged and which comminutes solid substances in the wastewater, further comprising an axially arranged screw spindle which, when rotated, forms a water ring necessary for generating the vacuum and draws in the wastewater by means of vacuum, further comprising an outlet and a drive motor, characterized in that the vacuum pump (1) ▪ comprises a suction nozzle (4) arranged in the inlet (3b), which is configured such that the suction nozzle (4) is always in fluidic contact with an outer diameter (4b) of a water reserve (5); ▪ and the check valve (6) is arranged at an angle between 1° and 90° relative to a vertical axis of the inlet-suction port transition (7) and fully seals the suction port (4), wherein the suction port (4) is further arranged such that, in the event of a leak in the check valve (6), none of its inner diameters (4a) can come into fluidic contact with a level of the water reserve (5), and the suction nozzle (4) is arranged at a height to the water level that ensures a sufficient water reserve (5) for suction under all operating conditions.

The application discloses a method for repairing naphthalene contaminated wastewater based on microbial co-culture induced biological calcification, which comprises the following steps: step one, inoculating naphthalene contaminated wastewater with polycyclic aromatic hydrocarbon degrading bacteria and urea bacteria to obtain a repaired wastewater system; step two, oscillating the repaired wastewater system at 25-35 DEG C for 10-14 hours to obtain a co-cultured system; step three, adding urea and calcium chloride to the co-cultured system to obtain an induced system; and step four, oscillating the induced system at 25-35 DEG C for more than or equal to 24 hours to complete the repair of the naphthalene contaminated wastewater. The method has the characteristics of high naphthalene pollutant repair efficiency and strong stability of the repaired system.

Vacuum pump as part of a vacuum wastewater system for emptying and flushing toilets and urinals - with a collecting inlet line which is connected to an inlet (2) in a housing (1) of the vacuum pump and is closed inside the housing by a flap valve (12) when the vacuum pump is not in operation, - with a cutting device (4) which is axially arranged and which crushes solid substances in the wastewater, - with an axially arranged screw spindle (5) which, when rotated, forms a water ring (6) necessary for generating the vacuum and draws in the wastewater by means of vacuum, - with an outlet (7) and - with a drive motor (9) for the cutting device (4) and the screw spindle (5), characterized in that the inlet (2) is continued inside the housing (1) as a tubular channel (10) and the outlet opening (11) from the channel (10) can be closed by the flap valve (12), supported by gravity or part of the gravity of the flap (13) of the flap valve (12).

The utility model discloses an environment-friendly mixed wastewater treatment system, which belongs to the technical field of wastewater treatment, and comprises a wastewater system, a spray drying tower, an annealing kiln, a hot air system and a curing treatment mechanism, the device is novel in design and ingenious, by arranging the first air inlet pipe and the second air inlet pipe, the first air inlet pipe can preliminarily dry falling water mist, water mist which is not dried in the period continues to fall, the water mist is dried again through the second air inlet pipe in the falling process, double drying is achieved, the drying effect can be improved, and the drying efficiency is improved. Water mist is prevented from falling to the tower bottom to accumulate moisture, the humidity in the tower is increased, and the water mist drying speed is further influenced, the water mist is completely evaporated to form solid particles when falling to the second discharging pipe, the solid particles are deposited at the tower bottom of the spray drying tower, and the solid particles in the spray drying tower are discharged through the second discharging pipe by opening the valve. Therefore, the effect of zero discharge of wastewater is achieved, and the practicability of the device is greatly improved.

The invention discloses a method for extracting lithium from a lithium-containing ammonium salt wastewater system, which specifically comprises the following steps: uniformly mixing a phosphorus extraction agent and a beta-diketone extraction agent through solvent oil to obtain a mixed extraction agent; adding the mixed extracting agent into the lithium-containing ammonium salt wastewater to extract and separate lithium ions to obtain an oil-phase loaded extracting solution; and mixing the oil-phase loaded extraction liquid with reverse extraction acid, performing reverse extraction, and separating to obtain a water-phase lithium solution after reverse extraction. For a lithium-containing ammonium salt wastewater system under the conditions that the Li < + > content is 0.5-2 g / L and the NH4 < + > concentration is smaller than or equal to 30 g / L, the composite extraction agent composed of the beta-diketone extraction agent and the phosphorus extraction agent is adopted, under the influence of competitive ion ammonium ions, the Li < + > selectivity and the Li < + > extraction rate are improved, the single-time extraction rate can reach 90% or above, and the lithium-containing ammonium salt wastewater can be recycled. Li < + > can be simply and reversely extracted by only adopting conventional acid subsequently, and the single-time reverse extraction rate can reach 95% or above as well.

The application discloses a preparation method of a defluorination agent suitable for sulfate wastewater and application of the defluorination agent, and specifically comprises the following steps: S1, raw material pretreatment; S2, preparation of a template solution; S3, sol-gel reaction; S4, aging treatment; S5, drying treatment; S6, high-temperature calcination; and S7, crushing and screening. The application also comprises application of the defluorination agent suitable for sulfate wastewater. The defluorination agent suitable for a sulfate wastewater system is prepared by optimizing the preparation process of the mesoporous silicon-aluminum composite material, precisely controlling the mesoporous pore size to 2 nm, optimizing the silicon-aluminum ratio, enhancing the selective adsorption capacity of the material to fluorine ions, inhibiting the competitive adsorption of sulfate, simultaneously simplifying the preparation process, reducing the treatment cost, improving the sulfate salt impact resistance of the agent, and realizing deep standard treatment of sulfate fluorine-containing wastewater.

This utility model discloses an anti-scaling preheater for a high COD wastewater MVR system, comprising: a U-shaped outer sleeve assembly, an H-shaped intermediate sleeve, and an inner sleeve. The H-shaped intermediate sleeve is concentrically fitted inside the U-shaped outer sleeve assembly, and the inner sleeve is concentrically fitted inside the H-shaped intermediate sleeve. The ends of the H-shaped intermediate sleeve inside the U-shaped outer sleeve assembly are all closed structures. An expansion joint is provided at one end of the U-shaped sleeve assembly, and an ultrasonic descaling device is provided on one side of the upper end of the U-shaped outer sleeve assembly. This utility model has the following advantages: the preheater is modularly designed, allowing multiple sets to be used in series, which is convenient for transportation. The annular material channel formed between the three sleeves makes the material a thin liquid layer, resulting in a high heat transfer coefficient. The hot and cold fluids flow completely in opposite directions, and ultrasonic descaling is achieved. Furthermore, the expansion joint on the U-shaped outer sleeve assembly, which facilitates heat exchange of the material, can effectively prevent damage to the outer sleeve due to thermal expansion and contraction.

The invention relates to the technical field of composite materials, and particularly discloses a magnetic polycrystalline composite material for treating pentaerythritol production wastewater and a preparation method of the magnetic polycrystalline composite material. The magnetic polycrystalline composite material for pentaerythritol production wastewater treatment is prepared from the following raw materials in parts by weight: 100 to 120 parts of glucose, 10 to 20 parts of a nano MgO template agent, 25 to 35 parts of ferric chloride hexahydrate, 10 to 16 parts of ferrous chloride tetrahydrate, 40 to 60 parts of tetrabutyl titanate, 30 to 50 parts of urea, 1000 to 1500 parts of deionized water, 600 to 900 parts of absolute ethyl alcohol and 6 to 10 parts of polyvinylpyrrolidone. The magnetic polycrystalline composite material for pentaerythritol production wastewater treatment has strong adaptability to a complex wastewater system. The unique magnetism enables the separation and recovery to be simple and fast. The composite material can be recycled, secondary pollution is avoided, and the whole life cycle cost is reduced.

This application provides a system for the co-production of ethanol and hexanoic acid through syngas fermentation, belonging to the field of syngas fermentation. The system includes: a primary reactor through which feed gas is introduced; a microbial cell separation device, the inlet of which is connected to the outlet of the primary bioreactor; a distillation device, the inlet of which is connected to the clear liquid outlet of the microbial cell separation device; and a secondary reactor, the inlet of which is connected to the residual distillate outlet of the distillation device. This system enables primary fermentation to produce metabolites such as ethanol and acetic acid. After ethanol is extracted by distillation, acetic acid is used as a substrate in the secondary fermentation system to produce hexanoic acid. Therefore, this system avoids the acetic acid produced during primary fermentation from entering the downstream wastewater system, reducing the wastewater treatment load, and simultaneously converting low-value products into high-value products, thus improving economic efficiency.

The invention provides a desulfurization wastewater flue gas evaporation control method and device suitable for wide-load operation. According to the desulfurization wastewater flue gas evaporation control method suitable for wide-load operation, dynamic matching of the desulfurization wastewater treatment amount and the flue gas evaporation capacity can be achieved when low-load operation is caused by deep peak regulation of a coal-fired unit, and the stability of a multiphase flow field in an evaporation tower and complete evaporation of wastewater are maintained; the problems of hardening, blocking and system shutdown are effectively avoided, and stable and continuous operation of the desulfurization wastewater zero discharge system is guaranteed.

The application discloses a kind of sewage system schematic diagram generation method, equipment and medium, it is related to electric digital data processing technical field.The method comprises the following steps: identifying the sewage pipeline corresponding to sewage system in three-dimensional model, and determining the pipeline type corresponding to sewage pipeline according to the topological relation of sewage pipeline;Wherein, pipeline type includes vertical pipe main pipe, horizontal pipe main pipe and instrument branch pipe;Read the elevation information in the link model of three-dimensional model, and based on the base point selected by user, according to elevation information, generate elevation line and the elevation name corresponding to each elevation line;From the first elevation line as drawing starting point, generate the pipeline graph line corresponding to each pipeline type;At the preset position of pipeline graph line, generate the end device legend connected with pipeline graph line, and carry out pipe diameter annotation and vertical pipe numbering annotation to pipeline graph line, obtain the schematic diagram corresponding to sewage system.

This application discloses a mixed-bed regeneration wastewater diversion and recycling device and a mixed-bed regeneration wastewater system. The mixed-bed regeneration wastewater diversion and recycling device includes: a three-way diversion valve, an inlet pipe connected to the wastewater pipe of the mixed bed, a first outlet pipe connected to an acid-base neutralization tank, and a second outlet pipe connected to a storage device; a total dissolved solids (TDS) analyzer for detecting the total dissolved solids content discharged from the wastewater pipe of the mixed bed during the replacement stage; and a control system that controls the three-way diversion valve to switch to the first or second outlet pipe based on the comparison result of the detected value and a preset threshold. This application uses a TDS analyzer to detect the total dissolved solids in the wastewater during the replacement stage, and the control system controls the outlet pipe of the three-way diversion valve to be open based on the comparison result of the detected value and a preset threshold, thereby achieving precise diversion and recycling of wastewater of different qualities, thereby improving water resource utilization and reducing wastewater treatment costs.

The utility model relates to the vacuum test field, and specifically is a kind of vacuum leak detection test system for aircraft wastewater system, including air pipe, input pipe, nitrogen pressure reducer, pressure regulating filter, vacuum generator, pressure measuring tube and test tube, and the both ends of air pipe are connected with first quick coupling and second quick coupling respectively, and the both ends of input pipe are connected with second quick coupling and third quick coupling respectively, and third quick coupling is also connected with nitrogen pressure reducer, and the both ends of pressure regulating filter are connected with second quick coupling and vacuum generator respectively, and vacuum generator is connected with silencer and the pipeline of aircraft wastewater system respectively, and the both ends of test tube are connected with adapter and fourth quick coupling respectively, and the both ends of pressure measuring tube are connected with air pipe pipeline and vacuum gauge, and air inlet stop valve, exhaust stop valve and pressure regulating valve are installed on test panel.The product can select gas source according to working condition, reduce use cost, and the size of vacuum degree is accurately regulated by pressure regulating valve, and precise regulation value can be obtained.