36 results about "Wastewater reuse" patented technology

The application discloses a kind of red mud gradient depth purification-rare earth-radioactivity synergistic target purification method, by " hierarchical pretreatment and microwave modification→three-stage gradient dealkalization→rare earth-radioactivity synergistic target purification→full quantization recycling" four-stage integrated process, realize red mud harmless and high-value utilization.The three-stage gradient dealkalization uses microwave-CO2-biological synergic system, after dealkalization pH≤8.0, Na2O content<1%;Rare earth-radioactivity purification is extracted by HDES and coupled with multi-ligand magnetic material system, light rare earth recovery rate≥95%, middle heavy / rare earth recovery rate≥90%, U / Th removal rate≥95%;Full quantization recycling realizes red mud total utilization rate≥98.5%, wastewater reuse rate≥95%, every ton of red mud fixed CO2≥0.2 tons.The application is suitable for various high-alkali, containing radioactive and rare earth red mud treatment, with environmental benefits and economic benefits.

The present application relates to the technical field of mineral processing, and provides a siderite directional enrichment and separation integrated process, which comprises the following steps: ore pretreatment, ore slurry directional dispersion and selective flocculation regulation, batch flotation separation, product refining and wastewater recycling four links, each link is accurately matched based on mineral surface electrical property and adsorption characteristic parameters, the iron element grade of siderite after flotation can be increased by more than 15%, the highest recovery rate can reach 76.70%, the iron grade can be increased to 59.90% at most, the high-value recovery of low-grade multi-element symbiotic siderite is realized, and the tailing discharge amount is reduced by 15%; the wastewater is closed-loop recycled without external discharge, and the first-level requirement of the comprehensive wastewater discharge standard is met.

This application discloses a wastewater utilization method and intelligent electrical appliance for a water softener. The water softener is equipped with a wastewater tank and a wastewater reuse water circuit. The method includes: responding to a wastewater reuse command, acquiring the current operating condition of the water softener and the target water volume corresponding to the current operating condition; the wastewater in the wastewater tank is obtained by recycling wastewater generated during the resin regeneration stage of the water softener; acquiring the current water level in the wastewater tank and determining the current water volume in the wastewater tank based on the current water level; calculating the ratio of the current water volume to the target water volume to obtain the current water volume ratio; determining the target opening degree of the solenoid valve based on the current operating condition and the current water volume ratio, and controlling the solenoid valve to transport wastewater from the wastewater tank to the water supply circuit at the target opening degree. This application can convert the wastewater generated by the water softener during the resin regeneration stage into usable brine and tap water, reducing the overall water consumption of the water softener and avoiding water waste.

The present disclosure relates to a method and system for sewage reuse, the method comprising the following steps: making the sewage to be treated sequentially enter a first catalytic oxidation unit, a first denitrification filter tank unit, a first carrier enhanced BAF unit, a manganese sand unit and a double membrane unit for treatment to obtain concentrated water and fresh water; making the concentrated water sequentially enter a high-density unit, a second catalytic oxidation unit, a second denitrification filter tank unit, a second carrier enhanced BAF unit and a sand filter unit for treatment; the second carrier enhanced BAF unit comprises a second carbon-based carrier, a second engineering bacteria and a second nutrient salt; the second nutrient salt comprises phenol. The method provided by the present disclosure can perform deep treatment on sewage for reuse, so as to improve the utilization rate of sewage.

This invention belongs to the field of wastewater treatment technology, specifically relating to a method and apparatus for reusing chlorinated benzene rubber wastewater. The method includes the following steps: homogenization: introducing the chlorinated benzene rubber wastewater into a homogenization tank and introducing air to discharge chlorine-containing waste gas; oxidative flotation: subjecting the treated wastewater, oxidized wastewater, and chlorinated benzene-containing waste gas to oxidation treatment, then re-entering the oxidation tank for further treatment under ultrasonic synergistic action, and repeating this cycle to remove organic matter and suspended solids; clarification and buffering: the oxidized wastewater enters a buffer tank; pretreatment for reuse: the water after multi-media treatment enters an ultrafiltration unit to further remove particulate matter from the multi-media effluent; reuse treatment: the remaining wastewater enters a reverse osmosis unit for reuse, and the concentrated wastewater is sent to a wastewater treatment plant. This invention provides a method for reusing chlorinated benzene rubber wastewater that is environmentally friendly, produces high-quality wastewater, and has a high production rate; this invention also provides a reuse apparatus.

This invention discloses a dynamic control method and system for reclaimed water reuse in waste transfer stations, belonging to the field of wastewater reuse and automatic control technology. The method determines the maximum allowable salt load and remaining available salt load for the system by acquiring the current water storage capacity and salt load parameters of the reclaimed water tank, the predicted water demand of the flushing terminal in the next control period, and the maximum allowable salt load threshold for the target reclaimed water. Based on the current salinity parameters of the treated wastewater, the allowable amount of treated wastewater to be added is calculated, and the water supply to the treated wastewater branch and the makeup water branch is controlled accordingly. This method can improve the utilization rate of treated wastewater while ensuring that the salt load of the terminal reclaimed water does not exceed the limit.

This invention discloses an energy cycle optimization method and system based on cross-domain collaboration, relating to the interdisciplinary fields of environmental protection and biomass energy. It includes: a collaborative data interaction unit for acquiring synchronous cross-domain data from water treatment and biomass natural gas sources; an AI cross-domain optimization unit for matching sludge supply and demand with wastewater reuse using a resource matching prediction model based on a standardized cross-domain dataset, optimizing global parameters of the matching results using a cross-domain process optimization model, and generating corresponding execution parameters based on the optimized global parameters using a microbial sludge adaptation model and a water quality / wastewater adaptation model, respectively, in conjunction with actual energy cycle scenarios; and an intelligent early warning unit for identifying cascading failure risks in cross-domain data based on a cross-domain fault correlation model. This invention can significantly improve cross-domain operational efficiency and resource utilization, achieving a closed-loop cycle optimization of the entire chain of cross-domain data, including sludge, energy, and water resources.

The application discloses a long-chain dibasic acid microbial fermentation wastewater resource comprehensive utilization method, and belongs to the wastewater treatment and utilization field of resources and environment. It comprises sequentially carried-out adjusting step, neutralizing step, coagulation and sedimentation step, hydrolytic acidification step, A / O process treatment step, submerged MBR process treatment step, reverse osmosis treatment step, hard removal treatment step, nanofiltration treatment step, mechanical steam recompression treatment step and the like. The application adopts the combination of chemical treatment process, biochemical treatment process, physical membrane separation and evaporation process and the reasonable setting of steps, improves the quality of wastewater reuse water and the purity of sodium sulphate, reduces the risk of membrane system and evaporation system scaling, enhances the stability and efficiency of system operation, and realizes the comprehensive resource utilization of long-chain dibasic acid microbial fermentation wastewater.

This invention relates to an integrated wastewater reuse device and method using a biofilm-ultrafiltration coupling process. The device includes a bioreactor body containing a biological reaction zone and a rapid sedimentation zone. The biological reaction zone further comprises an anoxic zone and an aerobic zone, both containing structured packing material. An inlet pipe is located at the front end of the anoxic zone, a microporous aeration device at the bottom of the aerobic zone, and a return pump at the end of the aerobic zone, connected to the inlet pipe via a return pipe. An inclined baffle is positioned at the end of the aerobic zone, enclosing a rapid sedimentation zone that is wider at the top and narrower at the bottom. The rapid sedimentation zone is divided into a lower sedimentation zone and an upper clear liquid zone, with the ultrafiltration membrane module immersed in the upper clear liquid zone. Compared to existing technologies, this invention effectively removes organic matter, total nitrogen, and suspended solids from wastewater, solving the problems of easy clogging, low efficiency, and high energy consumption in existing MBR systems.

This invention provides a SED ecological descaling system for thin-gauge steel plates, designing a steel plate descaling technology field. High-pressure water and abrasive are mixed inside the descaling nozzle to form a high-pressure abrasive jet, which then impacts the steel strip surface. Relying on the impact grinding of the abrasive and the water wedge effect of the high-pressure water, the oxide scale and rust on the steel plate surface are removed. The continuous arrangement of four descaling units allows for full-width descaling coverage of the steel plate as it is conveyed, and the system is finished by a rinsing unit to improve the overall descaling effect. The wastewater and waste sand generated during descaling can be recycled and reused through a sand sorting and recovery system, a water circulation system, and a sand circulation system. This achieves graded recovery and recycling of the abrasive, and sedimentation, filtration, and reuse of the wastewater, significantly improving the abrasive recovery rate and wastewater reuse rate, realizing an ecological resource recycling descaling effect.

The application discloses a kind of wastewater collecting device for squid jerky processing, applied in wastewater collecting device technical field, and its technical solution main points are: including at least two groups of parallelly arranged wastewater precipitation cylinders and the flexible water outlet pipe fixedly connected to the bottom of wastewater precipitation cylinder, the flexible water outlet pipe is hoop around with elastic closure ring, the wastewater precipitation cylinder top is fixedly connected with wastewater pressurizing component for pressing down the wastewater in the wastewater precipitation cylinder, so as to open the elastic closure ring, the bottom of wastewater precipitation cylinder is based on screw rod sliding component and is respectively parallelly slid with the precipitate collection pipe for collecting precipitate in wastewater and wastewater collection pipe for collecting wastewater, the precipitate collection pipe is circumscribed with precipitate collection cylinder, the wastewater collection pipe is circumscribed with wastewater treatment component for treating wastewater to realize wastewater reuse;With technical effect is: simple structure, reduce the treatment of sewage and the cost of water resource reuse.

This application provides a wastewater reuse process control method, apparatus, electronic device, and storage medium. The method includes: obtaining the influent conductivity of the wastewater deep reuse raw water tank; determining whether the wastewater reverse osmosis device can operate normally based on the relationship between the influent conductivity and a preset safe operation index; when the wastewater reverse osmosis device can operate normally, using the wastewater reverse osmosis device for wastewater reverse osmosis; when the wastewater reverse osmosis device cannot operate normally, adjusting the return water volume of the pure water tank based on a preset formula for calculating the permeate return ratio and a preset formula for calculating the permeate return flow rate, combined with the influent conductivity, to adjust the influent conductivity of the wastewater deep reuse raw water tank. This forms a wastewater reuse process control method based on influent conductivity, solving the problem of continuously deteriorating crude oil properties leading to a continuous increase in salt concentration in the discharged wastewater, causing the influent conductivity to exceed the standard.

This invention relates to the technical field of PTA (purified terephthalic acid) plant circulating water wastewater reuse, and discloses a method and system for high-recovery-rate industrial circulating water wastewater reuse. The method includes the following steps: industrial circulating water wastewater sequentially enters a multi-media filter, an activated carbon filter, and a precision filter for filtration, and then enters an electrodialysis unit for reverse-polarity electrodialysis to obtain recycled water. The multi-media filter has three filter layers from top to bottom, each layer using filter media with different particle sizes and densities. The industrial circulating water wastewater enters the multi-media filter from top to bottom. This invention, through sequential multi-media filtration, activated carbon filtration, and precision filtration, and the use of reverse-polarity electrodialysis, can achieve a higher and more stable desalination rate, especially meeting the requirements for PTA plant circulating water wastewater reuse treatment, and producing stable product water quality.

This invention provides a pond aquaculture wastewater treatment system, comprising an aquaculture area, an ecological channel, a meandering wetland, a filter dam, and a natural wetland, sequentially connected along the wastewater flow direction, with a wastewater reuse and discharge control device at the end. The aquaculture area incorporates an aquaponics module (including ecological floating beds and aquatic plants) and a micro-nano aeration system. The ecological channel features multiple overflow weirs forming miniature ponds planted with floating-leaved plants. The meandering wetland uses multiple physical barriers to guide the wastewater through meandering. The filter dam is a permeable dam filled with filter media. The natural wetland constructs a clear-water ecosystem. The wastewater reuse and discharge control device can control the discharge of wastewater to external rivers or its return to the aquaculture area and ecological channel based on water quality. This invention solves the technical problems of existing pond aquaculture wastewater treatment systems, which are difficult to adapt to land-scarce aquaculture areas due to their large footprint, and which easily lead to substandard wastewater treatment and increased costs.

To provide a wastewater recycling toilet system that can prevent toilets from becoming unusable even when toilet usage exceeds the wastewater recycling capacity. The wastewater reuse toilet system S comprises toilets 10a and 10b, corresponding flushing water pipes F1a and F1b and drainage pipes F2a and F2b, a first line L1 having a processing unit L10 for processing wastewater and a pump L11 for supplying treated water produced by processing L10 to the toilets, a second line L2 having a sewer pipe F22 for distributing wastewater to the sewer and a water supply pipe F21 for distributing water from the water supply as flushing water to the toilets 10a and 10b, a switching unit 20 capable of switching the connection destination of the flushing water pipes F1a and F1b between the pump L11 and the water supply pipe F21, and switching the connection destination of the drainage pipe between the processing unit L10 and the sewer pipe F22, and a control unit 310 for controlling the switching unit 20.

A method for preparing an ammonia nitrogen-rejecting reverse osmosis membrane based on a support layer with controllable amination degree is disclosed. This invention aims to address the problem of poor selective separation performance of ammonia nitrogen in reverse osmosis membranes prepared based on inert support layers. The method comprises: 1. Synthesizing APAEPO polymer with controllable amination degree; 2. Preparing a polymer support layer with controllable amination degree using a solvent-inducible phase inversion method; 3. Preparing an ammonia nitrogen-rejecting reverse osmosis membrane using interfacial polymerization. This invention allows for flexible control of the membrane's ammonia nitrogen rejection rate (92.2%~99.1%) and water flux by adjusting the amination degree of the support layer (0-80%), meeting the needs of different reclaimed water treatment scenarios (such as low-ammonia nitrogen wastewater reuse and high-ammonia nitrogen wastewater deep purification), thus having a wide range of applications. The preparation process of the amination polymer in this invention does not require the introduction of toxic modifiers, the polymerization reaction conditions are mild, secondary pollution is minimal, and it can be directly industrialized.

The application discloses a kind of high-strength stone sand production wastewater reuse treatment device, it is related to wastewater recovery processing technical field, including dehydration screen and at least one hydrocyclone, hydrocyclone is located above dehydration screen and is fixedly connected with it, dehydration screen includes screen mesh located below hydrocyclone, the lower portion of screen mesh is provided with the monitoring assembly corresponding with hydrocyclone, monitoring assembly includes water collecting tank, first filter screen, baffle, support, trigger mechanism and position sensor.The application is by setting water collecting tank that can move up and down, trigger mechanism, position sensor and counter, so that central control unit is based on the data of multiple drainage periods accumulated in a complete period (for example, several hours or a shift) Analysis can accurately determine the change trend of screen water flow and sediment deposition, rather than relying on only one isolated data point, so that the judgment result is more objective and accurate.

This invention discloses a method and system for treating fermentation wastewater, belonging to the field of fermentation wastewater treatment. This invention solves the problems of non-zero discharge, low treatment efficiency, and high treatment difficulty in existing technologies for fermentation wastewater. This invention designs different treatment routes and systems for three types of wastewater with different characteristics: high-salinity wastewater, low-salinity wastewater, and microbial protein waste liquid. For high-salinity wastewater, a process of screen + coagulation sedimentation + multi-media filtration + ozone catalytic oxidation is used to remove organic matter and total phosphorus; for low-salinity wastewater, a highly active sludge biochemical treatment technology is used to remove nitrogen and phosphorus; and for microbial protein waste liquid, a sludge collection + screw press dewatering technology is used to achieve thorough dewatering. The treatment processes for the three types of wastewater are carried out simultaneously, and the effluent is recycled back into the three systems for further treatment, achieving zero discharge of fermentation wastewater. Furthermore, this treatment method reduces the wastewater treatment pressure on the system, improves treatment efficiency, and allows for wastewater reuse, showing broad application prospects.

The utility model discloses a resin tower regenerative wastewater recycling system, including alkaline wastewater container and acidic wastewater container, alkaline wastewater container and acidic wastewater container are connected with the regenerative wastewater export of resin tower through first pipeline and second pipeline respectively, and first pipeline and second pipeline are installed with first valve and second valve respectively, still include neutralization treatment container, alkaline wastewater container is connected with neutralization treatment container through third pipeline, and acidic wastewater container is connected with neutralization treatment container through fourth pipeline, and neutralization treatment container is connected with the alkaline outlet pipeline still, and the alkaline outlet pipeline is used for inputting potassium hydroxide solution to neutralization treatment container, and the solution handled in neutralization treatment container is used for resin tower recycling. The utility model discloses through the neutralization of alkaline wastewater and acidic wastewater and access neutralization treatment container, add alkaline solution to neutralization treatment container through the alkaline outlet pipeline simultaneously, has improved the neutralization effect, makes alkaline wastewater and acidic wastewater can all be recycled.

This invention belongs to the field of wastewater treatment technology, and particularly relates to wastewater reuse treatment equipment for water environment management. It includes a cylindrical treatment tank, which is placed horizontally. Inside the tank, along its axial direction, are arranged an anaerobic zone, an aerobic zone, and a sedimentation zone, completely separated by two vertical partitions fixedly connected to the inner wall of the tank. A first conveying pipe connects the anaerobic zone and the aerobic zone, and a first water pump is installed on the first conveying pipe. By incorporating an isolation component, this invention isolates the activated sludge during wastewater treatment, preventing the aeration discs from becoming clogged and ensuring their normal operation. Furthermore, the isolated activated sludge is prevented from contacting the air pumped into the aeration discs, extending its service life. It also prevents the activated sludge from churning in the aerobic zone due to the gas pumped out by the aeration discs.

The application relates to the technical field of steel industry wastewater treatment, in particular to a method and system for reducing and treating steel production wastewater, which comprises a water quality adjusting tank, a circulating water supplementing pump, a low-temperature multi-effect evaporator, a fluorine removing device, a flue gas online heat taking device, a flash evaporation device and the like. The comprehensive wastewater of a steel enterprise and flue gas waste heat are taken as resources, the comprehensive wastewater is subjected to circulating concentration and fluorine removing treatment, a small amount of concentrated water is continuously discharged after being concentrated to a certain multiple, and is sent to existing solid waste resources (steel slag) of the steel enterprise for complete treatment. Steam flashed by the waste heat is condensed in the heat exchange pipe, and is collected and sent to various users, and can also be used as water of the flue gas online heat taking device. Through the combination of the evaporator concentration, the flue gas waste heat recovery and the solid waste treatment, the waste heat and the wastewater reuse are realized, the goal of waste making waste is achieved, and the salt balance problem of the water system of the steel production wastewater of the steel enterprise is solved.

The present invention relates to a wastewater reuse treatment system that oxidizes non-biodegradable organic matter, color-causing substances, fine suspended solids, and microorganisms in wastewater using ozone-containing nanobubbles, stabilizes the fine oxidation flux formed during the oxidation process in a retention zone, performs high-efficiency filtration treatment through a rotary-driven pore-controlled fiber filter, and recirculates a portion of the treated water containing ozone-containing nanobubbles as backwash water for the fiber filter to improve the cleaning efficiency of the fiber filter media. Accordingly, the present invention comprises an ozone contact tank (110) for oxidizing discharge water; a nanobubble supply unit (120) for supplying ozone-containing nanobubbles to the ozone contact tank (110); a rotary drive type pore control type fiber filter (130) disposed at the rear end of the ozone contact tank (110); and a recirculation line (140) for supplying a portion of the treated water oxidized in the ozone contact tank (110) as backwash water to the rotary drive type pore control type fiber filter (130).

This invention discloses a wastewater reuse treatment system for an eco-industrial park, belonging to the field of wastewater reuse treatment technology. It includes a wastewater collection and classification module, a multi-stage classification treatment module, an energy comprehensive recovery and utilization module, an intelligent monitoring and control module, and a precise reuse allocation module. The wastewater collection and classification module collects wastewater generated by various enterprises within the eco-industrial park and performs preliminary classification based on the wastewater's source and composition, then transports different categories of wastewater to corresponding treatment units. Based on the wastewater classification results, the multi-stage classification treatment module employs targeted treatment methods for wastewater with different compositions, such as anaerobic-aerobic combined treatment processes, chemical precipitation-ion exchange combined treatment processes, and reverse osmosis membrane treatment technology. This effectively removes pollutants such as organic matter, heavy metals, and salts from the wastewater, ensuring that the treated reuse water meets the reuse water standards of the enterprises within the park.

This invention provides a method for preparing a polyvinylidene fluoride (PVDF) metal-organic framework (MOF) hybrid membrane and the hybrid membrane itself. The method utilizes the advantages of MOFs, such as well-developed internal pores, ease of functionalization, diverse structural morphologies, and good compatibility with polymer matrices. By introducing monodisperse UiO-66 or UiO-66-NH2 MOF materials into the PVDF membrane matrix through blending modification, the pore shape and size can be effectively adjusted, resulting in a hybrid ultrafiltration membrane with high permeability selectivity. This preparation method is simple, easy to implement, and low in cost, and is of great significance for the development of hybrid ultrafiltration membranes. The prepared PVDF MOF hybrid membrane exhibits a high rejection rate for organic matter in drinking water and good antifouling performance, making it suitable for applications in wastewater reuse and advanced drinking water treatment.

The utility model relates to a kind of activated carbon production wastewater recycling device for sugar, including water tank, mounting bracket, drain valve pipe, filter core body, drain pipe and filter core switching mechanism, by drain valve pipe opening, wastewater enters filter core body and is filtered, filtered water enters drain pipe and is discharged outside, according to the time of setting replacement filter core body under wastewater condition, when replacing filter core body, first, close drain valve pipe, cylinder drives mounting seat and drain pipe to move down, when filter core body is not extruded by drain pipe, filter core body falls in the placing groove of disc due to self weight, filter core body surface anti-drop ring is attached with disc top, start driver drives disc rotation, remove old filter core body, new filter core body rotates to drain valve pipe and drain pipe coaxial distribution, at this time, start cylinder, drain pipe moves up, push filter core body, filter core body top and drain valve pipe bottom connect, drain valve pipe bottom and drain pipe top extrude sealing ring, sealing effect is achieved.

This invention discloses a method and system for treating and recovering wastewater from the natural gas-to-acetylene process. The system includes a pretreatment unit consisting of a carbon steel corrosion-resistant buffer tank, a ceramic membrane concentration system, a filter press, and an intermediate water tank connected in series; a degassing and recovery unit consisting of a packed stripping tower and a water ring vacuum pump; and a biochemical treatment unit. Specifically, carbon black wastewater is filtered through the ceramic membrane concentration system to produce filtrate and concentrated carbon black sludge. The concentrated carbon black sludge is then filtered through a plate and frame filter press; the filter press wastewater is reused, and the carbon black sludge is transported off-site. Acetylene-containing wastewater from the concentration process is combined with the filtrate and filter press wastewater to form mixed wastewater. This mixed wastewater enters a stripping tower, where dissolved gases are removed under vacuum and counter-current stripping of acetylene tail gas. The desorbed gas is returned to the pyrolysis gas main for recovery. After stripping, the wastewater is cooled and sent to a two-stage biochemical reactor to degrade organic matter. The treated water that meets the standards is discharged into a circulating water station for reuse. This achieves zero wastewater discharge and provides significant economic and environmental benefits.

The utility model discloses a kind of paint spray booth pry installation type air floatation wastewater reuse devices, including air floatation device, the air floatation device includes pool body, coagulation basin, belt pulley set, roll shaft, chain wheel set and support plate;Anti-accumulation component, the anti-accumulation component includes fixed plate, support pipe, spring, support column, aperture, limit block and hard scraper, the fixed plate is fixed in support plate one side both ends, support pipe one end swing joint is in the lower end of fixed plate side, spring one end is fixed in support pipe inboard, support column is inserted in support pipe, and it is fixed in spring other end, aperture is set in support pipe side edge, limit block one end is fixed in support column side edge, other end is inserted in aperture, hard scraper is fixed in support column other end away from spring. The utility model solves the problem that the dirt of the two side walls inside pool body cannot be scraped by scraper, after long-term accumulation, it can lead to flocculation effect deterioration, water flow disorder and the like.

This invention relates to the field of wastewater treatment technology and discloses an industrial wastewater reuse device based on green, low-carbon, and green development principles. The device includes a frame with a motor mounted on top. An output wheel is fixedly connected to the motor's output end, and a conveyor belt is mounted on the surface of the output wheel. Multiple mounting brackets are fixed to the surface of the conveyor belt, and rake teeth are fixedly connected to the mounting brackets. A top cover is mounted on the top of the frame, and a rotating block is located at the bottom of the top cover. An installation groove is formed inside the rotating block, and a power mechanism is installed inside the installation groove. When the rake teeth rotate to contact the cleaning teeth, the mutual cooperation between the two structures scrapes and peels off impurities adhering to the surface of the rake teeth, thereby cleaning the rake teeth and ensuring that they can continuously and efficiently intercept impurities in the wastewater. This prevents small debris from getting stuck in the gaps, holes, or spaces between the rake teeth when intercepting debris.

This application relates to the field of industrial automation control technology and discloses an intelligent program factory system for wastewater reuse. The system includes a syntax tree generation module, a constraint matrix construction module, a violation early warning module, an algorithm injection module, and a code compilation module. This system transforms discrete control logic into an initial abstract syntax tree and injects metadata semantic tags; it constructs a multi-physics coupling constraint matrix to set a lower bound threshold for the biochemical reaction residence time; it extracts extreme parameters and maps them to extreme transient flow rates; when the extreme biochemical reaction residence time is less than the lower bound threshold, it outputs a violation early warning object; driven by the early warning object, it locates nodes in the initial abstract syntax tree and superimposes control subtrees to generate a target abstract syntax tree; finally, it performs verification and compiles the code into a source file for output. This invention identifies the risk of biochemical residence time escape before program compilation and dynamically injects a compensation algorithm, reducing the risk of substandard water quality and improving the reliability of the underlying control logic.