907 results about "Suspended solids" patented technology

The invention relates to the field of river pollution treatment, and discloses a water quality treatment method, system, equipment and medium based on a remote sensing inversion technology, and the method comprises the following steps: S1, collecting a hyperspectral remote sensing image of a to-be-monitored water body, the hyperspectral remote sensing image comprising chlorophyll concentration, suspended matter concentration and dissolved oxygen; s2, based on the hyperspectral remote sensing image, preprocessing the hyperspectral remote sensing image, including geometric correction, atmospheric correction, noise removal and waveband fusion, to obtain a preprocessed image meeting an inversion precision requirement; and S3, inputting the preprocessed image into a water quality inversion model, and obtaining pixel-level chlorophyll, suspended solids and dissolved oxygen concentration data based on physical radiation transmission. By combining the hyperspectral remote sensing image and the water quality inversion model, large-range, real-time and high-precision water quality monitoring and pollution zoning are realized, model parameters are dynamically updated, and the timeliness and precision of water quality treatment are improved.

The invention discloses a heavy metal sewage deep purification system integrating membrane separation and chemical precipitation, and relates to the technical field of sewage treatment.The system comprises a sewage primary treatment module, a water quality parameter acquisition module, a process parameter decision module, a precipitation reaction regulation and control module and a deep separation and purification module; through a combined structure of coarse and fine grids and a horizontal flow sedimentation tank in the sewage primary treatment module, large-particle impurities and suspended solids in sewage are removed, a stable water quality basis is provided for subsequent treatment, the water quality parameter acquisition module acquires parameter data in real time through a multi-sensor fusion array, and the water quality parameter acquisition module acquires the water quality parameter data in real time. Accurate data support is provided for technological parameter decision making, the technological parameter decision making module generates a control instruction of precipitant adding and membrane operation pressure through calculation based on real-time data and historical operation data, the accuracy and adaptability of the treatment process are ensured, and the accurate control strategy not only improves the removal efficiency of heavy metal ions, but also improves the removal efficiency of the membrane operation pressure. And the risk of membrane pollution is also reduced.

The invention relates to the technical field of industrial wastewater sampling and discloses an industrial wastewater sampling system.The industrial wastewater sampling system comprises a frame, a connecting frame, a hydraulic cylinder and a rectangular plate, the connecting frame is located in the frame and slidably arranged in parallel, and the bottom of the hydraulic cylinder and the right side of the interior of the connecting frame are fixedly mounted; the upper surface of the rectangular plate and one end of an output shaft of a hydraulic cylinder are fixedly mounted, and a trigger sampling mechanism is arranged in the rectangular plate. According to the industrial wastewater sampling system, when a trigger rod is in contact with the bottom of a canal, a connecting spring and a telescopic rod in a power rebound mechanism are compressed, a third rack is driven to move upwards, a valve switch control mechanism is linked, a first butterfly valve and a second butterfly valve are synchronously closed, and a sampling barrel is sealed; it is ensured that the water sample is captured at the moment when the sampler is stabilized at the target depth and bottom mud is not stirred, and therefore index distortion of suspended solids and adsorptive heavy metal is effectively avoided, and the authenticity of the sample and the accuracy of detection data are improved.

The utility model relates to a treatment system for purifying high-salinity wastewater, which is suitable for treating high-salinity wastewater, particularly desulfurization wastewater of a coal-fired power plant and coal chemical wastewater. By combining efficient flocculation, ozone catalysis and membrane distillation technologies, a self-made chitosan-based flocculant is added in a flocculation stage, and suspended solids and heavy metal ions in wastewater are removed by utilizing good adsorption performance and flocculation capacity of the self-made chitosan-based flocculant; in the ozone catalysis stage, a self-made ternary composite catalyst is added, ozone decomposition is promoted, and organic pollutants are further removed; in the membrane distillation stage, a self-made antifouling and moisture-resistant composite membrane is used for efficient desalination and concentration, and finally efficient purification and recycling of the high-salinity wastewater are achieved. The process can significantly improve the wastewater treatment effect, reduce the concentration of salt and harmful substances in the wastewater, also reduce the operation cost, and is suitable for large-scale industrial wastewater treatment.

The invention relates to the technical field of image enhancement, in particular to a turbid water fish image enhancement system based on image enhancement, which comprises an attenuation feature layering module used for acquiring a turbid water fish image, extracting a color attenuation value and a local contrast value of each pixel point, and outputting the color attenuation value and the local contrast value; and calculating the pixel attenuation degree influenced by the suspended matters in the water body and the background scattered light to obtain a pixel attenuation distribution diagram, and setting a plurality of attenuation thresholds. According to the method, a turbid image is divided into a plurality of layers such as a foreground, a middle scene and a background by calculating a color attenuation value and a local contrast ratio of each pixel influenced by suspended matters in a water body and scattered light, and then differential gain coefficients are applied to extracted initial details such as fish scale and fin textures according to the layers to carry out injection; high-fidelity enhancement of a key foreground target is realized, and excessive sharpening and noise amplification of a background area are avoided.

The invention provides a preparation method of aquatic organism bottom modification particles, which comprises the following steps: adding bacillus subtilis liquid, an oxygen producer and an adhesive into a base material, stirring and granulating to obtain oxygen release core particles; stirring the oxygen release core particles in a roller coating machine, and intermittently spraying a chelating agent in the stirring process to obtain transition particles; and spraying the heavy metal adsorption sol on the transition particles, spraying the bonding solution after cross-linking and curing, then roll-coating the counterweight particles, and drying to obtain the aquatic organism bottom-changing particles. Reducing harmful gas and nitrogen and oxygen indexes are reduced, heavy metals and fine suspended solids are captured synchronously, and the oxidation-reduction buffer capacity of the bottom mud and the stability of a water body are recovered.

The invention discloses a heavy metal ion wastewater treatment device in construction wastewater, and belongs to the field of wastewater treatment. Comprising a filtering and purifying mechanism, and an agent adding mechanism is arranged on the left side of the filtering and purifying mechanism; a driving mechanism is arranged above the filtering and purifying mechanism; the filtering and purifying mechanism comprises a box body, and the top of the box body is fixedly connected with a circulating pump; the medicament adding mechanism comprises a hollow cylinder, the top of the hollow cylinder fixedly communicates with the bottom end of the input end of the circulating pump, and the inner side of the hollow cylinder is rotationally connected with water wheel blades through a rotating shaft; according to the device, through the synergistic effect of an arc-shaped flow deflector, an inverted V-shaped flow guide strip and a flow guide plate in the filtering and purifying mechanism, multi-stage flow guide dispersion of building wastewater is realized, the wastewater and impurities such as suspended solids, silt and concrete residues in the wastewater are prevented from intensively impacting a filter screen, and meanwhile, the impurities above the filter screen can be directly disturbed by reciprocating swing of the flow guide plate; the filter screen is prevented from being blocked by impurity accumulation.

The utility model discloses an organic wastewater treatment device capable of recovering biogas, which relates to the technical field of wastewater treatment and comprises a bottom plate, a reservoir is mounted at the top of the bottom plate, a guide frame is fixed on the inner wall of the reservoir, a grating for filtering suspended solids in sewage is slidably connected to the inner wall of the guide frame, and a water outlet is formed in the bottom plate. A cleaning assembly used for dredging the grating is arranged in the water storage tank. The device has the beneficial effects that the filter holes in the grid are dredged through the push block, the grid is prevented from being blocked, the filtering effect is ensured, the pull rope is pulled to drive the collection box to slide on the outer side of the limiting rod, the scraper is driven to scrape and clean the surface of the grid, the floating cover floats up and down along with the biogas generation amount in the sealing tank, and the biogas is collected; the sealing performance between the floating cover and the inner wall of the sealing tank is ensured through the sealing gasket, biogas leakage is prevented, and the collected biogas is recycled through the connecting hose.

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment partition aeration control method based on LSTM feedforward prediction and feedback, which comprises the following steps: S1, collecting real-time key data of a sewage treatment tank, the real-time key data comprising a dissolved oxygen measured value, an ammonia nitrogen measured value, a mixed liquid suspended solid concentration measured value and a flow measured value; s2, acquiring historical key data, inputting the historical key data into the long-short-term memory neural network model, and outputting an aeration prediction amount required by aeration; s3, calculating a deviation value between a dissolved oxygen measured value and a dissolved oxygen set value and a change rate of the dissolved oxygen measured value, and carrying out primary adjustment on the aeration prediction quantity based on the deviation value, the change rate and a fuzzy control algorithm; calculating a correction parameter K according to the sludge concentration, and adjusting the aeration prediction amount again based on the correction parameter K to obtain a target aeration amount; s4, determining the number and the opening degree of air blowers based on the target aeration rate; and S5, determining the opening degree of the valve based on the target aeration rate. The energy consumption can be reduced, and the sewage treatment efficiency can be improved.

This invention relates to the field of wastewater treatment technology, and in particular to a wastewater purification and reuse device based on a membrane bioreactor. Addressing the limited removal efficiency of pollutants adhering to membrane elements in existing technologies, this invention provides a wastewater purification and reuse device based on a membrane bioreactor. The device includes a treatment tank containing a membrane bioreactor assembly. The assembly includes an assembly frame with multiple membrane elements mounted on it. Scrapers that cooperate with the membrane elements are located on both sides of a horizontal plate. A cleaning assembly also includes a vertically movable frame. When the frame moves downwards, the horizontal plate moves downwards, and the scrapers clean the outer surface of the membrane elements downwards. A movable scraper is located on a support, and a collection box is located on one side of the support. When the scraper moves to one side, the collection box opens. By directly scraping away impurities adhering to the outer surface of the membrane elements, suspended solids, colloidal particles, microbial flocs, and other pollutants on the membrane surface can be removed quickly and effectively.

A submersible pump (10) suitable for pumping liquid that includes suspended solids such as sewage, includes a housing (12) with a motor (34) and a pump chamber (66). The motor rotates an impeller (72) within the pump chamber and a slicer (92) that operates to slice solids before they enter the pump chamber into smaller pieces. The impeller vanes (130) have a vane height (H) that is at least 30% of the impeller diameter (D). The impeller has a continuous annular donut shape open area (144) that maintains solids suspended and flowing with the liquid into and out of the pump chamber.

The utility model discloses a novel water conservancy construction filtering device, which belongs to the technical field of water conservancy construction filtering devices and is characterized by comprising a primary filtering box, the bottom of the primary filtering box is fixedly connected with a secondary filtering box, and a flushing assembly is arranged on the front side of the primary filtering box. The washing assembly comprises a storage box bolted to the front side of the primary filtering box, a cleaning assembly is arranged in the secondary filtering box and comprises a driving motor bolted to the bottom of the secondary filtering box, and the output end of the driving motor penetrates through the bottom of the secondary filtering box; the output end of the driving motor is fixedly connected with a threaded rod, and the problems that various suspended solids, silt, impurities and the like generated in the filtering process of an existing novel water conservancy construction filtering device need to be manually cleaned, if the filtering plate cannot be cleaned in time, the substances easily block a filtering medium, and the filtering plate cannot be cleaned in time can be solved. And the working efficiency and the quality are influenced.

The invention provides a treatment method of wood cooking wastewater. Comprising the following steps: providing wood cooking wastewater to be treated; the pH value of the wood cooking wastewater is 3-5; an alkaline emulsion is added into the wood cooking wastewater for pretreatment, so that the pH value of the wood cooking wastewater is 8 or above, and at least part of suspended solids in the wood cooking wastewater are removed; carrying out anaerobic biological treatment on the wood cooking wastewater treated by the alkaline emulsion; carrying out aerobic biological treatment on the anaerobic biological treatment effluent; adding a coagulant into the aerobic biological treatment effluent, adjusting the pH value to 4.0-5.5, and carrying out coagulation treatment; and carrying out oxidation adsorption treatment on the wood cooking wastewater subjected to coagulation treatment. And the effluent can reach the first-grade A emission standard, and the cost is relatively low.

The invention discloses a CO2 trapping system and method based on seawater grading pretreatment and electrochemical coupling. The system comprises a seawater grading pretreatment unit, an electrochemical coupling trapping unit and a CO2 separation and collection unit. The seawater grading pretreatment unit is used for removing suspended matters step by step and retaining carbonate through a triple filtering device, and preparing desalted seawater by utilizing a reverse osmosis device to meet electrolysis requirements; the electrochemical coupling trapping unit adopts a three-compartment structure including an anode chamber, a middle compartment and a cathode chamber, a cation exchange membrane and a proton exchange membrane are combined, protons generated by an anode are migrated to the middle compartment to react with seawater carbonate to generate CO2, and cathode hydrogen evolution and anode oxygen evolution are synchronously realized; and the CO2 separating and collecting unit is used for collecting high-purity CO2 through a membrane separation and vacuum negative pressure technology. According to the method, the problem of local consumption of deep and far sea wind power is solved, collaborative coupling of seawater purification, CO2 capture and green hydrogen preparation is realized, the green fuel synthesis cost is reduced, and the method has remarkable environmental and economic benefits.

The present invention provides improved methods for purifying and / or removing multiply charged cations and suspended solids from water. In particular the process relates to an additive composition that has the appropriate surfactant characteristics for effectively removing multiply charged cations and suspended solids from an aqueous or oil / aqueous mixed phase via foam fractionation. According to the invention, a hydrophobically modified polymer that acts as an associative thickener is used in the presence of a source of alkalinity or anionic reactant as well as surfactant in appropriate ratios to facilitate multiply charged cation and suspended solids removal for water purification in any of a number of commercial, environmental and industrial applications.

System and process for de-packaging organic material and separating the organic material from the packaging. Once separated, the organic material is processed in a de-packaging machine to form an organic slurry that is directed from the de-packaging machine to an anaerobic digester. A programmed controller is provided for controlling the flow of the organic slurry to the anaerobic digester. The programmed controller is programmed to maintain the total suspended solids concentration of the organic slurry within a target range and when in the target range, the programmed controller is operative to direct the organic slurry to the anaerobic digester. If the total suspended solids concentration is outside of the target range, then the programmed controller is configured to initiate action that will bring the total suspended solids concentration of the organic slurry back within the target range.

The invention discloses a low-energy-consumption crystallization purification method of high-purity molten salt-grade potassium nitrate, and belongs to the technical field of purification of inorganic chemical materials. The method comprises the steps of raw material pretreatment directional impurity removal, multi-stage gradient crystallization, mother liquor graded circulation and low-temperature drying, in the raw material pretreatment stage, impurity concentration online detection and dynamic pH regulation are combined, a chelating agent, an oxidizing agent and an adsorption flocculant are added step by step, precise directional removal of metal impurities and suspended solids is achieved, and the product purity is improved; a multi-stage gradient crystallization process combining gradient temperature control and sectional controllable cooling is adopted, and the crystallization efficiency is improved in cooperation with a crystal form regulating agent; a mother liquor graded circulation and drying waste heat recovery system is matched, so that the mother liquor utilization rate is increased, and the production energy consumption is reduced.

The utility model discloses a kind of sinking flow guide scraping wall type stirring oil drum, it is related to stirring oil drum technical field, including support, motor and barrel body, the bracket side surface installs barrel body fixing frame, the barrel body fixing frame is fixed with barrel body, the bracket bottom installs brake universal wheel, the bracket side surface installs sliding rail, the sliding rail side surface installs sliding frame, the sliding frame side surface installs motor, the motor bottom installs stirring rod, the stirring rod side surface installs stirring shaft, the stirring shaft end installs scraper. Without scraping wall mechanism, suspended solid or colloid in the area close to pool wall can deposit, solidify constantly, form thick silt or scale on wall surface in a long time. The utility model passes through the continuous contact of scraper and barrel wall, scrape all adherend in real time to bottom, make wall surface keep neat, avoid the generation of any stationary layer, guarantee that entire barrel body inside always maintains consistent flow field and mass transfer condition.

The embodiment of the utility model discloses a wastewater or feed liquid deoiling device. A waste water or feed liquid oil removal device is of a hollow cavity structure and comprises a shell and an inner cavity, the inner cavity is divided into a steady flow area, a coalescence area and a separation area which are communicated, and the steady flow area is separated from the coalescence area through a pore plate; the flow stabilizing area is provided with a wastewater inlet, an elbow, a baffle plate and a sludge collecting bag; the coalescence area is provided with an egg support type corrugated plate and a mud collecting bag; open holes are respectively formed in the tops of the convex parts and the bottoms of the concave parts of the egg support type corrugated plate; and the separation area is provided with a light oil overflow port, a water outlet and a mud collecting bag. The device disclosed by the utility model has a better removal effect on heavy oil, light oil, suspended matters and the like, greatly reduces the treatment cost, is simple to operate, high in integration level and smaller in occupied area, and has a better application prospect.

The invention discloses an agricultural non-point source pollution treatment system, and relates to the technical field of agricultural environmental protection and water treatment, and the agricultural non-point source pollution treatment system comprises an ecological ditch unit, an ecological pond unit, a connecting pipeline and a control unit; the ecological ditch unit is used for carrying out primary pretreatment on sewage through a plant enhanced corridor and an ecological filter dam to remove suspended solids and part of pollutants; the ecological reservoir pond unit realizes deep purification through a multi-stage process of flocculent precipitation, enhanced denitrification, ecological treatment and a stable area; the control unit intelligently regulates and controls water flow based on water quality monitoring data, water reaching the standard is directly reused in farmland or lakes, and water not reaching the standard enters a pond to be further treated. According to the invention, stepped deep removal of pollutants, cyclic utilization of water resources and self-adaptive operation of the system are realized, and the treatment efficiency and stability are improved.

The invention discloses sewage coagulating sedimentation equipment and method based on cloth printing and dyeing. The sewage coagulating sedimentation equipment comprises a treatment box, a PLC fixedly connected to the treatment box, a third motor fixedly connected to the treatment box and a rotating blade fixedly connected to the output end of the third motor. Thread residues are automatically removed through eddy current driving, and the situation that the thread residues interfere with the coagulation reaction is avoided; the mixing assembly performs reverse stirring so that the medicament and the sewage are fully mixed, and the coagulation reaction is more thorough; the conveying and separating assembly synchronously achieves sediment conveying and clear water leakage and separation, the solid-liquid separation efficiency is greatly improved, indexes such as effluent suspended solids and COD are remarkably reduced, the printing and dyeing sewage up-to-standard discharge or reuse requirements are met, the push-out scraping assembly cleans residues of a filtering blocking net and spiral blades in real time, and equipment blockage caused by thread residue winding and sediment accumulation is avoided; the sliding plate automatically scrapes blade residues, blade abrasion and energy waste are reduced, the service life of equipment is prolonged, and the shutdown maintenance frequency and the labor cost are reduced.

This disclosure relates to an underground water purification system for preventing siltation and a method for purifying and storing mine water. The system includes: an underground suspended solids purification section and an underground water reservoir; the water outlet of the underground suspended solids purification section is in fluid communication with the water inlet of the underground water reservoir; a filter adsorption material is installed in the underground suspended solids purification section; the underground water reservoir includes a closed space for self-purification of the water, and the closed space contains collapsed rock masses from a mined-out area. The system of this disclosure effectively purifies and stores mine water, and the underground water reservoir has a long service life.

The invention discloses a composite polyaluminum ferric chloride water purifying agent and a preparation method and application thereof, and belongs to the technical field of sewage treatment.The preparation method comprises the steps that citric acid modified nano magnesium phosphate is prepared through a hydrothermal reaction, then polyaluminum ferric chloride sulfate powder is prepared through alkalization polymerization, then acidified attapulgite serves as a carrier to load polyaluminum ferric chloride sulfate, and the composite polyaluminum ferric chloride water purifying agent is prepared. Finally, the composite material and citric acid modified nano magnesium phosphate are compounded, aged and dried, and the water purifying agent is prepared. A stable composite structure is constructed through multi-stage assembly, suspended solids, phosphorus, COD and heavy metal ions can be synchronously and efficiently removed through the synergistic effect of electric neutralization, a carrier framework and deep chelation, formed floc is compact and stable and high in impact resistance, the problems that a traditional water purifying agent is single in function, and the synergistic effect is prone to attenuation are fundamentally solved, and the water purifying agent is suitable for large-scale popularization and application. The water treatment scene with harsh requirements on the stability, the reliability and the long-term efficiency consistency of the medicament can be met.

The present application relates to sewage treatment technical field, disclose a kind of photocatalytic degradation sewage treatment device, comprising: primary treatment unit, it is regular triangular prism box structure, top is connected with water inlet end, inside is equipped with the filter layer arranged from top to bottom along the direction of water flow and can be independently disassembled;The filter layer includes: coarse filter screen, installation is in the top flow-through channel of primary treatment unit;Fine filter screen, located below the coarse filter screen;High-efficiency activated carbon layer, is equipped in the bottom of the primary treatment unit, the gradient purification structure of the device using primary, secondary, tertiary treatment unit, realizes the ordered degradation of sewage from pretreatment to advanced purification, primary treatment unit effectively removes suspended solids and macromolecular organic matter by multistage filtration, reduces subsequent processing load, secondary treatment unit carries out primary photocatalytic degradation, significantly reduces pollutant concentration, and tertiary treatment unit carries out advanced oxidation for refractory substances, to ensure that effluent quality is stable and up to standard.

The utility model discloses an agricultural drinking water pretreatment device which comprises a device shell, a coagulating sedimentation cavity is arranged in the device shell, the coagulating sedimentation cavity comprises a flocculation cavity, a water distribution cavity and a filler cavity, the flocculation cavity and the filler cavity are respectively positioned on two sides of the coagulating sedimentation cavity, a plurality of flocculation plates are arranged in the flocculation cavity, and the water distribution cavity and the filler cavity are respectively positioned on two sides of the coagulating sedimentation cavity. The flocculation plate is provided with a plurality of flocculation holes, the flocculation holes are uniformly distributed in the flocculation plate, the top of the flocculation cavity is provided with a first through hole, the first through hole is connected to the water distribution cavity, and the water distribution cavity is provided with a second through hole and is connected to the filler cavity; through the structures such as the coagulating sedimentation cavity and the flocculation plates, the efficient coagulating sedimentation process is realized, the removal effect of impurities such as suspended solids in drinking water is greatly improved, and the treatment quality of the drinking water is remarkably improved.

The utility model belongs to the field of ethylene glycol waste liquid treatment, specifically is a kind of ethylene glycol waste liquid recovery device, including jar body, the top of jar body is provided with feeding valve, the outer wall of jar body is provided with discharge valve, the inside of jar body is hollowed out cavity, the top of jar body is provided with feeding valve;The utility model provides a kind of ethylene glycol waste liquid recovery device, by motor control U-shaped frame rotation, reciprocating left and right movement of sliding plate, whenever second discharge port moves to the above of third discharge port, flocculating agent in receiving cavity falls into jar body along second discharge port and third discharge port, reciprocate from this, with the start of motor, flocculating agent in cavity is intermittently dosed into jar body, it is convenient to be mixed evenly with ethylene glycol waste liquid in jar body, improve the sedimentation effect of suspended solids in ethylene glycol waste liquid, while U-shaped frame rotation, drive the rotation of shaft, make stirring vane rotate, by the rotation of stirring vane, the fusion of flocculating agent and ethylene glycol waste liquid can be accelerated.

The utility model relates to the technical field of sewage treatment, and particularly discloses a distributed sewage treatment device. Comprising a base, a filtering box, a purifying box and a sterilizing box, a first fixing plate is fixedly connected to the base, the filtering box is fixedly connected to the top of the first fixing plate, a second fixing plate is fixedly connected to the base, the purifying box is fixedly connected to the top of the second fixing plate, a connecting pipe is fixedly connected to the bottom of the filtering box, and the filtering box is fixedly connected with the purifying box through the connecting pipe; the bottom of the purifying box is fixedly connected with a connecting pipe, and the purifying box is fixedly connected with the sterilizing box through the connecting pipe. The sewage treatment device has the following beneficial effects that the motor is started to drive the adsorption plate on the stirring rod to rotate, so that the contact area between the adsorption plate and sewage can be increased, and some fine suspended matters in the sewage can be fully adsorbed; an ultraviolet sterilizing lamp is arranged in the sterilizing box, and DNA of bacteria and viruses in the sewage is destroyed by ultraviolet rays, so that the sewage treatment effect is ensured.

The utility model discloses a multi-stage sewage treatment tank which comprises a main tank, a first-stage enclosure and a second-stage enclosure, an inner tank cavity and a plurality of sub tank cavities are separated, a sewage one-way circulation structure is arranged among the sub tank cavities, the first-end sub tank cavity is connected with a sewage inlet pipe, the tail-end sub tank cavity is connected with the inner tank cavity through a standby pumping pipeline, and the inner tank cavity is connected with a purified water outlet pipe. The sub-tank cavity at least comprises a primary sedimentation tank, an aerobic reaction tank and the like, and the inner tank cavity is provided with a deep treatment tank. The secondary sedimentation tank is provided with a sludge hopper, the aerobic and anoxic reaction tanks are provided with stirring devices, and the aerobic tank is provided with an aeration device. The main body pool can be rectangular or annular, and the inner pool cavity is consistent with the main body pool in shape and is reduced in equal proportion. The sewage treatment tank is small in occupied area, compact in structure, convenient to maintain, capable of achieving sewage staged treatment and efficiently removing organic matter, suspended solids and nitrogen and phosphorus nutrient substances, capable of meeting the high requirement standard, convenient to configure an automatic control system and accurately controlling the treatment process, suitable for different sewage treatment requirements, especially suitable for urban sewage treatment, and wide in application prospect.

The utility model belongs to the technical field of recycling devices, and discloses a machine tool cutting fluid recycling device which comprises a box body, a recycling mechanism is arranged in the box body, and the recycling mechanism extends to the outer side of the box body; the recovery mechanism comprises two fixing plates, during use, cutting fluid is poured into the box body firstly, and the thrown cutting fluid sequentially penetrates through the first plate frame type filter screen and the second plate frame type filter screen under the influence of gravity and falls into the bottom of the box body; at the moment, a plate frame type filter screen I and a plate frame type filter screen II can preliminarily filter solid impurities and metal chips in the cutting fluid, and then an auxiliary component is matched, so that the preliminarily filtered cutting fluid can fully react with a chemical agent to form suspended solids which are easy to separate; and finally, the first plate-and-frame filter screen, the second plate-and-frame filter screen and the suspended matter are sequentially taken out, and through the structure, solid impurities, metal scraps, oil stains and organic matter in the filter screen can be taken out so that the filter screen can be recycled in the later period.

The environment-friendly technology for rubber paste production comprises the following steps that S1, pretreatment is conducted, specifically, waste water generated in the rubber paste production process enters a pretreatment pool to be pretreated, a grating and a screen are arranged in the pretreatment pool, and large suspended solids in the waste water are removed; s2, mixing reaction: introducing water into stirring equipment, adding a liquid medicine according to the quality of the wastewater, and rapidly mixing the liquid medicine with the wastewater through the stirring equipment to neutralize the pH value and the drug power in the wastewater. S4, precipitation: feeding the wastewater subjected to the mixed reaction into a precipitation tank, and standing for a certain time to obtain preliminarily clarified water. And S5, filtering: enabling the clarified water to pass through a filter tank, and intercepting residual fine suspended matters and colloidal substances. S6, disinfection: adding a disinfectant into the filtered water to kill pathogenic microorganisms such as bacteria and viruses in the water. The stirring equipment in the step S2 comprises a stirring tank, so that the liquid medicine can be quickly diffused in each layer and region of the water body.