65 results about "Oily wastewater" patented technology

The utility model discloses a kind of oil removal and air flotation integrated water treatment equipment, including water treatment processor, water inlet pipeline and water outlet pipeline are respectively arranged at the both ends of water treatment processor;Two baffle plates are arranged in water treatment processor, further include: oil removal device and air flotation device, are arranged in the area between water inlet pipeline and the baffle plate close to water inlet pipeline, oil removal device is used to remove part of oiliness in water inlet substance;Air flotation device is used to produce bubble to make impurity in water inlet float out;Scraping residue device is arranged in the area between two baffle plates, for removing the float dregs generated by air flotation.The integrated water treatment equipment significantly improves the removal efficiency of oiliness in high oil content wastewater, overcomes its interference to air flotation process, solves the fundamental problem of low treatment efficiency of traditional air flotation process;At the same time, by efficient built-in oil removal mechanism, reduce or eliminate the dependence on excessive chemical agent, thereby solve the problem of large amount of chemical agent consumption caused by low efficiency of traditional air flotation process.

The application provides an oil-containing wastewater treatment equipment and method based on low-temperature evaporation, and belongs to the technical field of wastewater treatment. The equipment comprises, which are arranged in series, a demulsifier reaction tank, a polyaluminum chloride reaction tank and a polyacrylamide reaction tank, and oil-containing wastewater flows through the three reaction tanks to realize continuous and staged flocculation; a filter pressing device is communicated with a discharge port of the polyacrylamide reaction tank, and is internally provided with an arc-shaped filter residue assembly, a rotary residue scraping assembly and a filter pressing cleaning assembly, and the three assemblies are cooperated to form integrated operations of filtering, salvaging, filter pressing and cleaning; and a low-temperature evaporation machine is connected to a liquid outlet end of the filter pressing device. The application realizes continuous demulsification and flocculation treatment through the multi-tank series connection, and batch waiting is not needed; the filter pressing device automatically cleans flocculation materials while filter pressing, so that blockage is avoided and manual cleaning is not needed during shutdown. The overall process is closely connected, and the degree of automation is high, so that the oil-containing wastewater treatment efficiency and continuous production capacity are significantly improved, and the water quality after treatment can reach the recycling standard.

The application provides a utilization method of desalted water of a galvanizing line and a galvanized sheet production equipment. The utilization method comprises the following steps: introducing the desalted water into a finishing machine, collecting generated finishing waste water, introducing the finishing waste water into a first sedimentation and ultrafiltration mechanism for treatment, and obtaining first treated desalted water; introducing the first treated desalted water into a tension leveler, collecting generated tension leveler waste water, introducing the tension leveler waste water into a second sedimentation and ultrafiltration mechanism for treatment, and obtaining second treated desalted water; introducing the second treated desalted water into a water quenching tank and a desalted water circulation tank for circulation, collecting part of generated water quenching waste water, introducing the water quenching waste water into a third sedimentation and ultrafiltration mechanism for treatment, and obtaining third treated desalted water; and introducing the third treated desalted water into a cleaning section for use. The desalted water is utilized in series, the use amount of the desalted water is saved, waste water discharge is reduced, the treatment load, treatment scale and treatment cost of oil-containing waste water are reduced, and the water production and water supply pressure of the desalted water are relieved.

This invention belongs to the field of wastewater treatment, specifically relating to a composition, treatment agent, and application for treating oily wastewater and oily sludge. The composition comprises component A and component B, with a mass ratio of (40-100):(5-8). Component A consists of cyclodextrin, sodium alginate, and glycerol; component B is acrylamide. This invention uses cyclodextrin, sodium alginate, glycerol, and acrylamide as main components, containing functional groups such as polycarboxyl, polyhydroxy, carbonyl, and amino groups. It utilizes hydrogen bonding, covalent bonding, and electrostatic interactions between these functional groups to achieve rapid treatment of wastewater or sludge. Experiments show that this composition has good acid resistance and adsorption capacity, achieving the removal of oil and suspended solids from acidic oily wastewater and sludge without pre-oxidation or pH adjustment, effectively reducing treatment costs and simplifying the treatment process.

The application discloses a kind of fast green and good versatility polyphenol coating modification method, product and application thereof.Hydrophobic material is washed with ethanol multiple times to be pre-wetted;Pre-wetted hydrophobic material is immersed in polyphenol-containing substance, silane coupling agent with amino group and deionized water to be super-hydrophilic modified;Modified film is taken out and washed with deionized water completely.The prepared polyphenol coating modified super-hydrophilic film has layered nanosphere structure, and can be applied to purification of oily wastewater.The method is carried out in pure water system, does not contain any toxic additives and oxidant, and only needs 40 minutes to realize super-hydrophilic modification of various polymer hydrophobic films, greatly improves modification efficiency.Modified PP film prepared by the method has super-high pure water flux and higher oil-in-water emulsion separation efficiency, and has excellent mechanical stability, acid and alkali resistance and long-term stability in air.The method has the advantages of green environmental protection, good versatility, high modification efficiency and the like.

The present application relates to the technical field of oily sewage treatment, in particular to an oil-water separation tank for oily sewage, comprising a tank body and an oil-water separator arranged in the tank body. The tank body is sequentially provided with an inlet groove, a distribution groove, an overflow groove and a water storage groove along the water flow direction, and the oil-water separator is arranged between the inlet groove and the distribution groove and is internally formed by a plurality of partition plates to form a continuous flow channel. The oil-water separator sequentially comprises a horizontal separation section, a twist conversion section and a vertical stratification section, and the partition plates are arranged in a horizontal, inclined or vertical state according to the structure requirements in different sections, so as to guide the oil droplets to gradually gather, float up and realize effective oil-water separation. The present application has compact structure, improves the separation efficiency by using the geometric design of the flow channel, and improves the liquid flow direction to improve the liquid flow rate in the flow channel. It is suitable for the pretreatment or reuse system of oily wastewater in the fields of industry and environmental protection.

This invention discloses an aramid 1414-based aerogel membrane material for oily wastewater separation, its preparation method, and its applications. The membrane material comprises a superhydrophilic electrospun substrate membrane and aramid 1414 nanofibers loaded on the surface and internal pores of the substrate membrane. The aramid 1414 nanofibers are filled by negative pressure filtration and then freeze-dried to form an aerogel structure. The preparation method includes: preparing a superhydrophilic electrospun substrate membrane; preparing a nanofiber dispersion of aramid 1414 and polyacrylonitrile; loading the aramid 1414 nanofibers onto the substrate membrane by negative pressure filtration to form a hydrogel membrane; and freeze-drying the hydrogel membrane. This invention achieves highly efficient separation of submicron-sized emulsified oil by filling the electrospun substrate membrane with aramid 1414 nanofibers to form a submicron-sized pore structure, achieving a separation efficiency of up to 99.10%. The preparation process is simple and cost-controllable, showing promising application prospects in the field of oily wastewater treatment.

This utility model discloses an oil-water separation device for wastewater treatment, relating to the field of oil-water separation technology. It includes a separation tank with a first and second partition fixed inside. The first and second partitions are fixedly connected and divide the interior of the separation tank into upper and lower parts. A through hole is formed on the first partition, and a sliding groove is formed on the second partition, with the through hole communicating with the sliding groove. A hydraulic cylinder is installed on the right side of the separation tank. Oily wastewater is pumped into the separation tank using a pumping component. After all the oil in the wastewater floats to the surface, the lower layer of wastewater is discharged using a pumping component. When the water-oil boundary line in the separation tank approaches the first partition, a push plate is inserted into the through hole by the hydraulic cylinder to engage with it. Complete oil-water separation is achieved using a hydrophobic membrane, allowing the oil to be discharged along the oil drain pipe, while the wastewater is completely discharged by the pumping component.

This invention discloses a method for preparing cationic and amphiphilic quaternized composite magnetic nanoparticles, comprising the following steps: Step S1, preparing magnetic iron oxide nanoparticles using a hydrothermal method; Step S2, preparing silica-coated magnetic iron oxide nanoparticles using the Stober method; Step S3, preparing cationic and amphiphilic quaternized composite magnetic nanoparticles using an electrostatic self-assembly method. This invention uses low-cost alkane quaternary ammonium salts as functional monomers to achieve a three-layer core-shell structure comprising an iron oxide magnetic core, a silica intermediate bridging layer, and an alkane quaternary ammonium salt functional outer layer. The alkane quaternary ammonium salt is stably loaded onto the silica surface through a non-covalent grafting mechanism of electrostatic self-assembly, thereby achieving mild and efficient grafting. The resulting composite magnetic nanoparticles can achieve efficient separation of emulsified oily wastewater at room temperature and exhibit excellent recyclability, salt tolerance, and wide pH adaptability.

This utility model belongs to the field of oily wastewater treatment technology, specifically an oily wastewater treatment device. It consists of a filter screen, a fixed plate, a movable plate, and a scraper. Wastewater is poured into the inside of the filter screen through a connecting pipe on the lower side. The fixed plate, movable plate, and the protruding part inside the treatment tank work together to separate the filter screen into two parts. The wastewater passes through one part for filtration and is then discharged through the connecting pipe on the other side. When the filtered part becomes clogged, the movable plate retracts into the fixed plate. This prevents the filtered impurities from being scraped off by the movable plate when the filter screen rotates. The rotation of the filter screen moves unfiltered impurities to the filtration area, while the clogged impurities move to the upper part of the scraper. The movable plate returns to its original position, the filter screen continues to separate impurities, and the scraper rises to scrape off and push the impurities to the exposed environment. The scraper can then be cleaned. This method achieves rapid replacement and cleaning of the filter structure after clogging, improving the stability of the filtration process.

This invention discloses an integrated skid-mounted air compressor unit and its operating method, relating to the field of air compressor units. This invention effectively solves the problems of existing air compressor units being inconvenient for overall movement and rapid deployment, lacking systematic multi-stage filtration and real-time monitoring, and unable to achieve flexible and independent control of each output branch. The technical solution includes: the integrated skid-mounted air compressor unit and its operating method integrate various structures into a skid-mounted whole through an integrated frame, capable of simultaneously or independently outputting cold dry air, deep-dried air, and negative pressure vacuum, significantly reducing user configuration costs and management difficulty. The structure is extremely compact, greatly reducing the floor space required, and facilitating overall hoisting, transportation, and rapid on-site deployment. The filtration mechanism effectively removes oil mist, moisture, and particulate impurities from compressed air, ensuring the quality of the end-use air. A unified oil-water separation mechanism centrally collects and separates oily wastewater from each device, avoiding environmental pollution caused by decentralized wastewater discharge.

This invention relates to a process for recycling wastewater from zinc-nickel alloy plating. The process includes: (1) separating wastewater generated from each step of the zinc-nickel alloy plating process into oily wastewater, zinc-nickel waste liquid, and combined wastewater; (2) passing the oily wastewater through an automatic fine filter; (3) adjusting the pH of the oily wastewater and adding a coagulant aid for coagulation and sedimentation; (4) filtering the supernatant from the coagulation and sedimentation of the oily wastewater using sand filtration; (5) adjusting the pH of the combined wastewater with acid and then adding a reducing agent for reaction; (6) adjusting the pH of the combined wastewater after the reduction reaction with alkali, adding a gravity trap for reaction, and then sequentially adding PAC and PAM flocculants. (7) Flocculation and sedimentation; (8) Sand filtration of the supernatant after flocculation and sedimentation of the comprehensive wastewater; (9) Membrane separation of the supernatant after sand filtration; (10) Plate and frame filter press of the bottom mud; (11) Changing the overflow water wash of the first washing tank of zinc and zinc-nickel plating to a water-stop wash; (12) Using low-temperature evaporation equipment to evaporate and concentrate zinc-nickel waste liquid; (13) Outsourcing the disposal of the concentrated liquid, using condensate and membrane separation product water for post-treatment and reuse, and using the membrane concentrated liquid and sand filtration supernatant for waste gas tower reuse and pre-treatment reuse, respectively.

This utility model discloses a high-efficiency, high-temperature, and high-oil wastewater flotation system, relating to the field of wastewater treatment technology. The wastewater flotation device includes a flotation cylinder and a mixing cylinder disposed on one side of the outer middle layer of the flotation cylinder, with the mixing cylinder communicating with the interior of the flotation cylinder. A reagent tank is installed above the mixing cylinder and is fixed to the outer side of the flotation cylinder by a fixing bracket. A conveying pipe is connected to the bottom of the reagent tank. Simultaneously, as the oily wastewater enters the mixing cylinder, a water pump synchronously conveys the reagent from the reagent tank to the interior of the mixing cylinder, allowing the reagent to contact the oily wastewater and enter the flotation cylinder together. At the same time, a motor-driven stirring blade is installed at the end of the mixing cylinder, allowing the reagent and oily wastewater to contact the stirring blade and mix together under the rotation of the stirring blade before entering the flotation cylinder.

This invention relates to a continuous oily wastewater treatment device, comprising an oil removal unit, an ozone oxidation treatment unit, a membrane bioreactor unit, and a biological aerated filter treatment unit. These units are sequentially connected via corresponding pipelines. The biological aerated filter treatment unit includes an aeration tank body, within which a biological packing material is detachably installed. First branch pipes are respectively installed on both sides of the aeration tank body, and multiple second branch pipes are fixedly installed on each first branch pipe. Each second branch pipe is equipped with an aeration head and a detection device for identifying whether the aeration head is clogged. An auxiliary disassembly device is installed within the aeration tank body to simultaneously remove all clogged aeration heads, facilitating manual recycling and replacement of severely clogged aeration heads and reducing maintenance time costs.

This invention provides an antifouling ultrafiltration membrane with adjustable pore size, its preparation method, and its application, belonging to the field of membrane separation technology. The antifouling ultrafiltration membrane provided by this invention includes a polyolefin support layer, and a polysulfone ultrafiltration layer and a sulfonated polysulfone functional selective layer stacked on the surface of the polyolefin support layer. The ultrafiltration membrane of this invention can form a superhydrophilic-underwater superoleophobic interface, which can significantly inhibit the adsorption, adhesion, and scaling of oil droplets on the membrane surface, alleviate membrane fouling problems, and significantly improve the membrane flux recovery rate and long-term operational stability. The ultrafiltration membrane prepared by this invention simultaneously possesses high separation accuracy and high water flux, with good batch uniformity, and has excellent application prospects in the field of oily wastewater treatment.

This utility model discloses a deep oil removal device for mechanically processed oily sludge, including a bubble oil removal mechanism for the pre-treatment stage of water treatment. Oily wastewater can enter the bubble oil removal mechanism for oil removal. The bubble oil removal mechanism includes a waste liquid conditioning tank into which the oily wastewater enters. The mechanism also includes a mixing chamber and a bubble generator. The waste liquid conditioning tank is connected to the mixing chamber, allowing the oily wastewater to enter from the conditioning tank. At least a portion of the bubble generator extends into the mixing chamber, generating bubbles to carry away oil molecules from the wastewater. The treated wastewater is returned to the waste liquid conditioning tank for cyclic oil removal according to a specific period. Using this utility model, small molecule oils can be separated, effectively reducing the oil content of wastewater and improving wastewater treatment efficiency.

This invention relates to the field of oil-water separation technology, and provides a method and system for treating industrial oily wastewater based on dynamic membrane separation. The method includes: performing demulsification and oil removal operations on solids-free wastewater to obtain primary wastewater and demulsifier usage records, and acquiring oil droplet particle size distribution; obtaining the maximum particle size of a preset minimum percentage of oil droplets from the oil droplet particle size distribution to obtain a first particle size, and acquiring a target safety factor; performing a weighted calculation on the first particle size and the target safety factor to obtain the target pore size of the dynamic membrane; querying the type of pre-coating agent corresponding to the target pore size of the dynamic membrane to obtain a desired type; identifying the application instruction sequence based on the desired type and the target pore size of the dynamic membrane; performing a surface modification operation on a cross-flow filter ceramic substrate membrane using the target pre-coating agent according to the application instruction sequence to obtain a target dynamic membrane; and performing oil-water separation. This invention can improve the separation efficiency of oil-water separation in wastewater.

The application discloses an oilfield produced water treatment micro-bubble cyclone oil remover and relates to the technical field of sewage treatment.The oilfield produced water treatment micro-bubble cyclone oil remover comprises a front pretreatment unit, a dissolved air water preparation unit, a pipeline mixing unit, an oil remover body unit, an automatic residue and oil discharge unit, a water outlet control unit and a dosing unit.In the application, the core process principle of front multi-phase strong turbulent mixing adsorption amplification of density difference and rear coaxial anti-back-mixing cyclone centrifugal separation is adopted, which is different from the solidification technical logic of conventional oily wastewater treatment, that is, separation first and air flotation adsorption later.The strong turbulent field is formed by the static mixing structure of the pipeline mixing unit, so that the micro-bubbles fully collide with the destabilized emulsified oil droplets and suspended particles to be adsorbed and adhered, and the density difference between the pollutants and the water phase is artificially amplified, and then the stable centrifugal field is formed by the coaxially nested cyclone separation structure, so that the high-efficiency separation is realized by using the amplified density difference.

This utility model discloses a deep oil and slag removal system for oily wastewater, including a raw material storage unit, a raw material conveying unit, a treatment reaction unit, and a finished product temporary storage unit. The raw material storage unit is equipped with a storage space for storing raw materials. The raw material conveying unit is located at the front end of the treatment reaction unit. The treatment reaction unit is used for deep oil and slag removal from the oily wastewater. The treatment reaction unit includes an acid precipitation reaction device, an air flotation device, and a chemical dosing device. The oily wastewater is conveyed to the acid precipitation reaction device for acid precipitation reaction through the raw material conveying unit. The acid precipitation reaction device and the chemical dosing device are respectively connected to the air flotation device. The finished product temporary storage unit is located at the rear end of the treatment reaction unit. The technical solution of this utility model can remove oil from organic oily wastewater, thereby reducing the treatment difficulty and cost of the downstream treatment system. Furthermore, it simultaneously solves the problem of waste gas overflow during the treatment process, greatly improving the treatment efficiency of oily wastewater.

This invention relates to an automatic sludge discharge device, three-phase separation equipment, and method for oily wastewater. The automatic sludge discharge device includes a discharge device, a stirring device, a pressure sensor, and a controller. The discharge device is connected to the bottom of the separation tank. The stirring device includes a motor, a rotating shaft, multiple support rods, and multiple stirring rods. The top end of the rotating shaft passes through the separation tank and is fixedly connected to the output end of the motor. Multiple support rods are arranged in a ring array at the bottom of the rotating shaft. Multiple stirring rods are arranged in an array on each support rod. The pressure sensor is fixedly installed on the support rod or stirring rod. The controller is used to control the start and stop status of the discharge device based on the pressure collected by the pressure sensor. This invention, by periodically stirring the sludge, avoids sludge coagulation and adhesion that causes blockage, and can more accurately measure the depth of the sludge layer, discharging the bottom sludge in one go. It has the advantages of more accurate discharge, avoidance of secondary pollution, and greater energy saving.

This invention discloses an oil-water separation system for industrial oily wastewater enhanced by centrifugal force, relating to the field of industrial wastewater treatment technology. The system includes a data acquisition module that acquires wastewater flow rate and oil concentration monitoring signals, generating raw operating condition data streams; a parameter analysis module that extracts flow rate and oil droplet size distribution characteristics, constructs a set of physical property parameters, calculates suitable centrifugal speed and chamber pressure setpoints using a centrifugal force field configuration model, and generates directional centrifugal force field control commands; a flow channel control module that establishes a spirally converging flow channel matching the oil droplet trajectory; a coalescence induction module that guides tiny oil droplets to coalesce into large-diameter oil clumps along the wall normal; a layered export module that independently exports the oil and water phases; and a closed-loop feedback module that monitors the oil content of the separated product stream and iteratively updates the commands. This system achieves dynamic adaptation between the centrifugal force field and the flow channel configuration, enhancing the oil droplet coalescence effect and improving oil-water separation accuracy and operational stability.

This utility model proposes a safe and easy-to-install grease trap, comprising a grease trap body, a heat exchanger network of a heat-conducting liquid, at least two supporting beam-column mechanisms, multiple clamping devices, and a heat-conducting liquid circulation heating device; the heat exchanger network of the heat-conducting liquid has a coil structure in the shape of a snake or a wave; the two supporting beam-column mechanisms are a first supporting beam-column mechanism and a second supporting beam-column mechanism; each supporting beam-column mechanism includes a supporting beam and at least two supporting columns for supporting the supporting beam; the two supporting beam-column mechanisms respectively support the left and right sides of the heat exchanger network of the heat-conducting liquid; this utility model also proposes a port oil and wastewater treatment system using a safe and easy-to-install grease trap, comprising the grease trap, loading arm oil pump, oil and wastewater pump, ship oil extraction pipeline, at least one loading arm device, and loading arm installation platform as described above; this utility model makes the grease trap easy to install and safe, thereby improving the grease trap's treatment efficiency for port oil and wastewater in winter.

This utility model relates to the field of wastewater technology and discloses a pretreatment device for oily wastewater that facilitates drug dosing. The device includes: a cylindrical body; a switching section located inside the cylindrical body; and a metering section located at the top of the cylindrical body. The drug is placed inside a storage tank and then transported downwards through a conveying pipe into the metering cylinder. A second motor drives two metering plates to rotate. When metering plate one no longer obstructs the bottom of the metering cylinder, the drug inside the cylinder falls, thus achieving a metered drug output. As metering plates one and two rotate, when metering plate one obstructs the bottom of the metering cylinder, metering plate two does not obstruct the bottom of the conveying pipe, allowing the drug to be transported into the metering cylinder. By adjusting the height of metering plate two, the sliding cylinder slides upwards under the transmission of an "L"-shaped connecting rod, achieving adjustable metering transmission.

This invention relates to the field of oily wastewater treatment technology, and more particularly to a two-stage hydrocyclone oil separator series oil removal process installed inside a tank. The process involves connecting a primary hydrocyclone and a secondary hydrocyclone in series inside a wastewater storage tank, with oily wastewater passing through both treatment units sequentially. The primary hydrocyclone utilizes a first centrifugal force field to separate heavy oil and solid particles. The secondary hydrocyclone, with its larger aspect ratio and smaller cone angle, generates a stronger centrifugal force field, achieving deep separation of fine oil droplets. The heavy and light oil phases generated by the two stages converge into the same oil collection pipe for recovery, and the purified effluent enters the main space of the wastewater storage tank. This invention effectively solves the problem of insufficient efficiency in simultaneous separation of heavy oil and fine oil droplets by a single-stage hydrocyclone through a staged separation mechanism, improving the quality of the effluent, and has the advantages of compact structure and simple operation.

The application relates to the technical field of wastewater treatment, in particular to an oily wastewater treatment device, which comprises a collecting tank, a supporting plate is arranged in the collecting tank, a partition plate is arranged on the inner wall of the collecting tank, a filter plate A is fixedly connected to one side of the partition plate, a filter plate B is slidably arranged on the upper end of the filter plate A, a reciprocating screw rod A is rotatably arranged on one side of the collecting tank, the filter plate B reciprocates on the upper end of the filter plate A under the drive of the reciprocating screw rod A, a connecting pipe driven by the reciprocating screw rod A is rotatably arranged on the lower end of the supporting plate, the oily wastewater is heated by hot air, the viscosity of waste oil is reduced, the flowability of the waste oil is enhanced, small oil beads are more easily gathered to form large oil drops, the self-floating speed of the waste oil is greatly improved, and the separation efficiency is improved, the dispersed waste oil in the wastewater is quickly gathered and floated to the water surface under the mutual cooperation of heating and air floatation, the oil-water separation efficiency is higher, and the oil-water separation effect is improved.

This invention discloses a multifunctional superhydrophobic photothermal / electrothermal dual-response polyaniline@covalent organic framework (PANI@COF) modified fabric material, its preparation method, and its applications. The material uses ordinary fabric as a substrate, and a COF interlayer formed by the condensation of 1,3,5-tris(4-aminophenyl)benzene and 2,5-divinyl terephthalaldehyde is grown in situ on the fiber surface via a Schiff base reaction. Utilizing the high specific surface area and abundant active sites of COF, a uniform nucleation and growth platform is provided for polyaniline, effectively inhibiting polyaniline aggregation. Subsequently, a polyaniline layer is coated onto the COF surface through oxidative polymerization, and finally, hydrophobic modification with polydimethylsiloxane (PDMS) yields a superhydrophobic composite material with a micro-nano rough structure, low surface energy, broad-spectrum light absorption, and excellent photothermal / electrothermal conversion properties. The material has a water contact angle of 151.4° and can rapidly heat to 72.5°C and 80.7°C under one solar radiation intensity or a 10V DC voltage drive, respectively. It also features self-cleaning, photothermal / electrothermal de-icing, oil-water separation, photothermal-driven water evaporation, and high-viscosity crude oil adsorption and recovery functions. The invention has a simple preparation process, broad substrate applicability, and is suitable for applications such as outdoor equipment anti-icing and de-icing, self-cleaning, solar water evaporation, and oily wastewater treatment.

This invention belongs to the field of environmental emergency technology, specifically disclosing a method for analyzing the treatment effect of oily wastewater based on image recognition. It addresses the problems of traditional methods such as infrared and ultraviolet methods for measuring oil content in water, which involve numerous instruments, cumbersome operations, long processing times, and poor adaptability to various scenarios. This invention combines deep learning-based target detection technology with microscopic images of oily wastewater. A target detection model is used to learn and train on the number, volume, and color of emulsified oil droplets in wastewater with different oil contents, treatment processes, and oil types. In field applications, the target detection model is used to identify and calculate the microscopic images of oily wastewater, thereby quickly predicting the oil content. This method is highly operable, accurate, and enables real-time analysis of the treatment effect of oily wastewater, while also being highly adaptable to changes in application scenarios.

This invention belongs to the field of environmental functional materials and water treatment technology, specifically relating to a multifunctional aerogel membrane based on charge-induced demulsification, its preparation method, and its applications. The oil-water separation aerogel membrane prepared by this invention uses quaternized chitosan as the backbone and agricultural waste corn cobs as the filler material, prepared through a directional freeze-drying composite process. This aerogel membrane combines multiple functions including oil-water separation, emulsion demulsification, and dye adsorption. For oil-water mixtures, after 10 cycles of recycling, the separation flux can maintain more than 85% of the initial flux, with a separation efficiency of up to 99%. The separation efficiency for different types of oil-in-water emulsions can reach over 97%. Furthermore, the raw materials are renewable, and the preparation process is green and environmentally friendly, solving the problems of weak demulsification ability, single function, and poor environmental friendliness of traditional oil-water separation materials. It can be widely used in oily wastewater treatment, industrial wastewater treatment, and other fields.

An axial anti-gravity three-phase pre-separation device relates to the technical field of oil field oily sewage treatment and comprises a water purification area barrel, a filler area barrel, a separation area barrel and a contact area barrel, the contact area barrel is positioned in the separation area barrel, and a cavity A is arranged between the contact area barrel and the separation area barrel; the separation area cylinder is located in the filler area cylinder, a cavity B is formed between the separation area cylinder and the filler area cylinder, the cavity B is filled with filler, the filler area cylinder is sleeved with the water purification area cylinder, a cavity C is formed between the water purification area cylinder and the filler area cylinder, a water outlet is connected to the bottom of the cavity C, and an oil collecting cylinder is arranged on the upper portion of the cavity B; the lower end of the oil collecting barrel is in sealed connection with the separation area barrel, an oil collecting cavity is formed between the oil collecting barrel and the separation area barrel, the oil collecting cavity is connected with an oil discharging pipe, the contact area barrel comprises a cylinder section located on the upper portion and a conical barrel section located on the lower portion, one side of the conical barrel section is tangentially connected with a nanometer gas-dissolved water inlet pipe, and the opposite side of the conical barrel section is tangentially connected with a water inlet pipe. According to the invention, three-phase pre-separation is realized.

This invention discloses a combined process for treating high-salt and challenging chemical wastewater, belonging to the field of industrial wastewater treatment technology. The process includes the following steps: S1. Oily chemical wastewater undergoes pretreatment in an oily wastewater equalization tank and an air flotation unit before entering a comprehensive equalization tank; S2. Other chemical process wastewater directly enters the comprehensive equalization tank and is homogenized with the wastewater treated in S1; S3. The comprehensive wastewater undergoes primary sedimentation to remove some suspended solids and organic matter; S4. The effluent from the primary sedimentation tank undergoes a biological system to remove organic pollutants, ammonia nitrogen, and total nitrogen; S5. The effluent from the biological system undergoes secondary sedimentation for sludge-water separation; S6. The effluent from the secondary sedimentation tank undergoes photocatalytic reaction to degrade recalcitrant organic matter; S7. The photocatalytic effluent undergoes high-efficiency sedimentation for sludge-water separation; S8. The effluent from the high-efficiency sedimentation tank undergoes advanced treatment in a combined deep treatment tank before being discharged in compliance with standards. This invention, through the synergistic design of each process unit, effectively addresses the inhibitory effects of high-salt and high-chlorine environments, improves wastewater treatment efficiency and stability, and reduces operating and maintenance costs.