31results about How to "Improve sedimentation efficiency" patented technology

This invention relates to a method for constructing a biodegradable mangrove ecological island based on dynamic tidal energy regulation, and an artificial island siltation device. The artificial island siltation device includes a bamboo gate system, a hemp rope net system, a fixed pile system, and a limiting system. A dynamic filtration structure is formed by the liftable bamboo gate and the hemp rope net. Utilizing the buoyancy difference and water flow velocity changes generated by tidal rise and fall, a synergistic effect is achieved: accelerating the passage of sediment-laden water during high tide and promoting siltation during low tide. A fully biodegradable material is used to construct a growing silt body. The buoyancy balance is regulated by the bamboo joint holes, ensuring the device remains suspended on the surface layer of the silt body. This allows for continuous siltation and elevation of the tidal flat, forming an artificial island that provides a site for mangrove seedling planting and meets the required daily sunrise duration for mangrove growth. The method and device of this invention have technical advantages such as low construction cost, dynamic adaptation to tidal changes, and avoidance of secondary pollution.

The utility model relates to a kind of environment-friendly sewage sedimentation pretreatment device, it is related to sewage treatment technical field, including pre-sedimentation tank, the upper portion of the pre-sedimentation tank is provided with separation cylinder, the front end of the separation cylinder is installed with sewage inlet pipe in one side, the upper portion of the separation cylinder is installed with separation water outlet pipe, the bottom of the separation cylinder is installed with sludge discharge pipe by connecting pipe, one end of the sludge discharge pipe is equipped with first motor, the other end of the sludge discharge pipe is equipped with sludge discharge port, the inside of the pre-sedimentation tank is equipped with multiple equidistant distribution and parallel inclined plate, the bottom of the pre-sedimentation tank is conical structure, and the bottom of conical structure is equipped with sludge discharge cavity, the lower end of one side of the sludge discharge cavity is installed with second motor, the inside of the sludge discharge pipe and sludge discharge cavity is all installed with auger mechanism, and the scheme solves the problem that a large number of and complex component impurity particles in sewage are not treated directly to deposit, and the problem that the deposition effect is poor and the burden of deposition equipment is increased.

The utility model belongs to water treatment technical field, specifically discloses a perforated folded plate for sedimentation tank and the sedimentation tank of oblique installation perforated folded plate. The perforated folded plate is the plate -like structure of undulating extension and includes at least three folded plate tops of undulating top end and three folded plate bottoms of undulating bottom end, and the folded plate top of perforated folded plate is adjacent to the folded plate bottom and is provided with a plurality of folded plate holes on or close to the folded plate top. The water inlet and the water outlet of the sedimentation tank are separately arranged in the lower part and the upper part of the pool body, a folded plate support is fixed above the water inlet in the pool body, a plurality of aforementioned perforated folded plates are obliquely arranged on the folded plate support in the pool body, the folded plate top of the perforated folded plate faces upwards and the folded plate bottom faces downwards. The perforated folded plate top of the utility model is provided with the folded plate hole, and the sewage can flow upwards through the folded plate hole, which not only can increase the sedimentation area, but also can realize automatic sludge discharge, has the characteristics of simple structure, wide application range, high sedimentation efficiency and automatic sludge discharge.

The utility model discloses a device for preparing a leather tanning agent by recycling chromium-containing wastewater, which comprises an equipment base and a recycling sedimentation tank, the recycling sedimentation tank is mounted on the equipment base, and a uniform reactant moving and throwing structure is mounted on the recycling sedimentation tank; the utility model relates to the technical field of waste water recovery equipment, and has the beneficial effects that the problems that in the existing waste water treatment, reactants are directly and manually fed into chromium-containing waste water for reaction and precipitation, but fixed feeding is mostly adopted, so that the reactants are not fully mixed with the waste water, the precipitation efficiency of chromium ions and the quality of tanning agents are influenced, and the production cost is high are solved; and the problems that the operation complexity and the energy consumption are increased due to the fact that the sediment directly sinks at the bottom of the reaction tank, cleaning and maintenance are inconvenient, and an integrated movable throwing and sediment discharging system is lacked are solved.

Aiming at the problems of inaccurate sediment monitoring, extensive sludge discharge control, low dosing accuracy and the like of the traditional sedimentation tank, the invention provides a visual monitoring and model-driven sediment prediction and sludge discharge control method and system for a sedimentation tank. The method comprises the following steps: visual monitoring: collecting images of a sedimentation tank through an underwater camera device, identifying interface characteristics of bottom mud, and constructing a bottom mud thickness distribution thermodynamic diagram in combination with an inverse distance weighted interpolation method; parameter acquisition: acquiring operation parameters such as water inlet flow, raw water turbidity, pH value and the like in real time; model-driven prediction: establishing a BP neural network model coupled with multiple variables, a mud yield model and a multi-dimensional coupled bottom mud distribution prediction model; and intelligent sludge discharge control: generating an optimization instruction of sludge discharge frequency, quantity and area based on a prediction result, and controlling sludge discharge operation. According to the invention, bottom mud monitoring automation and mud discharge control refinement are realized, the precipitation efficiency is improved, and the operation cost is reduced.

The application discloses a rotary inclined plate sedimentation tank and relates to the field of sewage treatment equipment. The rotary inclined plate sedimentation tank comprises a sedimentation tank body, a water inlet structure, a rotary inclined plate structure, a sludge collecting hopper and a water outlet structure. The inclined plate structure adopts a rotatable inclined plate device. The rotatable inclined plate device can rotate periodically due to the rotating force generated by the screw propeller at the end of the rotary inclined plate in the process of water flow and the rotating force generated by the uneven gravity distribution of sludge on the rotary inclined plate. Therefore, the sludge can be smoothly settled without being limited by the inclination angle, the sedimentation efficiency is improved, and the traditional sludge blockage phenomenon of the inclined plate is avoided.

The utility model relates to metallographic sample preparation equipment. Comprising a sample preparation device, a spray head is arranged on the sample preparation device, the purification mechanism comprises a water collecting tank, a solution inlet and a solution outlet are formed in the two ends of the water collecting tank respectively, the solution inlet is connected with a liquid outlet of the sample preparation device, and the solution outlet is connected with the spray head. The interior of the water collecting tank is divided into a plurality of settling areas, the settling areas are sequentially distributed in the direction from the solution inlet to the solution outlet, every two adjacent settling areas are communicated, and an electromagnet is arranged in at least one settling area. The sample preparation device is connected with the water collecting tank, flushing fluid is sequentially settled in the settling area of the water collecting tank, the electromagnet in the settling area can effectively remove fine scrap iron in the solution, and purified water can be recycled, so that water resources are recycled.

This utility model discloses an environmentally friendly wastewater filtration device, relating to the field of wastewater treatment technology. It includes a fixed base plate and a treatment assembly. The fixed base plate is an integrated structure, with a supporting column installed on the left end of its upper surface. The treatment assembly is located on top of the supporting column and includes a sludge sedimentation tank, a supporting top plate, a servo motor, a connecting shaft, a stirring rod, a connecting frame, a scraper, a sludge discharge pipe, and a sludge pump. The sludge sedimentation tank is located on top of the supporting column, with the upper surface of the supporting column tightly connected to the lower surface of the sludge sedimentation tank. The supporting top plate is installed on the upper inner side of the sludge sedimentation tank, and a servo motor is installed on the upper surface of the supporting top plate. This environmentally friendly wastewater filtration device, through the treatment assembly, facilitates sludge pretreatment, preventing sludge from clogging the filtration mechanism. The filtration assembly enables the device to fully filter wastewater and facilitates cleaning of the filtration mechanism.

The utility model relates to the technical field of mine water treatment, in particular to a mine water purification sedimentation tank which comprises a tank body, the inside of the tank body is divided into a mixing tank and a separation tank, a water inlet pipe is arranged at the top of the rear side wall of the mixing tank, a chemical feeding pipe is arranged at the top of the side wall of the mixing tank, and a spray head is arranged at an outlet of the chemical feeding pipe. A stirring part is mounted on the mixing tank, an overflow port is formed in the top of the front side of the separation tank, an inclined plate is arranged in the separation tank, a sludge collecting hopper is arranged at the bottom, located at the separation tank, of the tank body, the sludge collecting hopper is communicated with a sludge outlet groove through a sludge outlet formed in the bottom, and a sludge outlet pipe is connected to the front end of the sludge outlet groove. And the outlet end of the sludge outlet pipe is connected with the feeding hole of the sludge pump. The improved mine water purification sedimentation tank solves the problems of low efficiency and difficult mud cleaning of a traditional sedimentation tank through the mixing tank, the separation tank, the stirring piece, the mud collecting hopper, the mud pump and the like, and is particularly suitable for purification treatment of mine water.

This invention relates to the field of wastewater treatment technology, and in particular to a circulating water treatment system and method for a high-density sedimentation tank. The system includes a tank body with a top plate fixedly installed on its upper surface. A mixing zone and an inclined tube sedimentation zone are respectively arranged at the front and rear of the inner side of the tank body. A guide tube is fixedly installed between the mixing zone and the inclined tube sedimentation zone. A drive shaft is installed on the inner side of the guide tube via a drive mechanism. A guide vane is fixedly installed at the lower end of the drive shaft. A defoaming disc is fixedly sleeved on the outer surface of the drive shaft, near the top of the guide tube. This invention achieves efficient defoaming and flow stabilization through rotating defoaming ribs and a lower arched surface, preventing sludge from floating. Simultaneously, it automatically switches the rotation state of the defoaming ribs based on changes in liquid level, performing synchronous defoaming during normal operation and automatic relative rotation for self-cleaning during maintenance. This significantly improves sedimentation efficiency and reduces maintenance difficulty.

The utility model belongs to high corrosion material processing technical field discloses a kind of hierarchical high corrosion material pretreatment reaction device, including sediment tank and crushing box, two crushing rollers are rotatably connected in the crushing box inside, the sediment tank is provided with mixing and stirring subassembly and removes deposition subassembly;The mixing and stirring subassembly includes spiral stirring rod, driving shaft, universal joint, driving pulley, driven pulley and transmission belt;The utility model is through being provided with mixing and stirring subassembly, specifically, after being crushed by crushing roller inside crushing box, chemical precipitation is carried out in sediment tank, the process of deposition is rotated simultaneously with crushing roller, utilizes belt drive and cooperates the transmission effect of universal joint, drives spiral stirring rod rotation, and chemical reagent and high corrosion material are stirred, so that the high corrosion material of crushing better reacts with chemical reagent, improves deposition efficiency.

The application provides a sewage integrated continuous automatic treatment equipment, which comprises a box body, the inside of the top end of the box body is provided with a sedimentation stirring mechanism, the sedimentation stirring mechanism comprises a stirring bin, a first stirring paddle and a second stirring paddle, the stirring bin is arranged in the inside of the top end of the box body, the first stirring paddle is rotatably arranged at the central position of the stirring bin, the second stirring paddle is symmetrically arranged on the two sides of the first stirring paddle, and a fixing seat is fixedly arranged at the bottom of the inside of the stirring bin. The cooperation of the first stirring paddle and the second stirring paddle can improve the mixing efficiency of the medicament and the sewage, and the stirring bin, the storage bin and the filter bin are vertically arranged, so that the volume of the treatment equipment can be reduced, and the treatment equipment is convenient to use.

The utility model belongs to the field of dense medium treatment integration equipment, concretely relates to a heavy medium rapid setting integration equipment, including the treatment box, the inside fixed mounting of treatment box has the sediment tank, the upper end of sediment tank is hinged with the tank cover, the upper end left part of tank cover is fixed with the delivery pipe, the upper end right part of tank cover is fixedly connected with the elbow pipe. The utility model discloses the inside of sediment tank adds the structure such as spoiler strip, runner and guide vane, in the process of water supply to the inside of sediment tank, the outside of runner and spoiler strip is impacted by water flow in advance, so that the rotation can rotate, the potential energy of water flow can be offset in the process of runner rotation, can be reduced to the water flow through two guide vane and handle after, so that water flow can flow along the inner wall of sediment tank, thereby can effectively avoid the impact on water body in the process of adding water, can make the water in the process of adding deposition, effectively improve the sedimentation efficiency.

The utility model relates to the field of environmental pollution treatment, in particular to a photovoltaic power generation industrial wastewater biochemical treatment device which comprises a treatment box, a separation sleeve is fixedly connected to the upper end of the treatment box, the fixed column is fixedly connected to the inner wall of the separation sleeve, a spiral groove in a spiral state is formed in the fixed column, the spiral groove penetrates through the lower end of the fixed column, a first liquid injection groove is formed in the upper end of the fixed column, and a plurality of second liquid injection grooves are formed in the inner wall of the first liquid injection groove. According to the utility model, the flowing time of wastewater is prolonged through the spiral groove formed in the fixed column, a subsequent precipitant can be injected into the spiral groove through the second liquid injection groove formed in the fixed column at the same time, and the wastewater is fully mixed in the flowing process, so that the overall precipitation efficiency is improved; and most residues and other large particles in the wastewater are separated from part of liquid, so that the subsequent wastewater can be sufficiently treated conveniently.

The application discloses a chemical precipitation method using magnesium oxide and a metal hydroxide product, and the chemical precipitation method comprises the following steps: S1, obtaining a pre-reaction solution capable of being used for a precipitation reaction, and obtaining a pulp solution containing ions of a target metal in the pre-reaction solution; S2, mixing magnesium oxide powder and the pulp solution, and obtaining a first slurry through a pulp treatment; and S3, putting the first slurry into a reactor to perform a precipitation reaction, and generating a precipitated slurry containing a metal hydroxide of the target metal. In the magnesium oxide powder, a first part of the magnesium oxide powder has a higher average activity than that of the whole magnesium oxide powder. The method is used to solve the problem of serious activity attenuation of the magnesium oxide slurry, improve the precipitation efficiency of the target metal in the precipitation reaction, increase the content of the target metal in the metal hydroxide product, and reduce the single consumption of the magnesium oxide and the content of magnesium impurities in the product.

The utility model discloses an environment-friendly sedimentation tank, and relates to the technical field of wastewater treatment. The environment-friendly sedimentation tank comprises a liquid inlet pipe, a sedimentation tank body with a liquid outlet formed in the top, a guide cylinder arranged in the sedimentation tank body and a liquid inlet cylinder arranged in the guide cylinder, a hopper is arranged at the bottom of the sedimentation tank body, the guide cylinder is located above the hopper, and the liquid inlet cylinder is located above the hopper. The guide cylinder is fixedly connected with the sedimentation tank body through a first connecting piece, the liquid inlet cylinder is fixedly connected with the guide cylinder through a second connecting piece, one end of the liquid inlet pipe is communicated with the liquid inlet cylinder, and the other end of the liquid inlet pipe sequentially penetrates through the guide cylinder and the sedimentation tank body to form a liquid inlet. A flow guide opening is formed in the side periphery, close to the bottom, of the flow guide cylinder, and honeycomb inclined tube filler is arranged in a sedimentation cavity between the sedimentation tank body and the flow guide cylinder. The device can prolong the retention time of liquid and enhance the settling and filtering effects.

This utility model discloses a microfiltration sedimentation component for an integrated tank in rural domestic sewage treatment, belonging to the field of sewage treatment. The integrated tank microfiltration sedimentation component includes a tank body, an inlet and an outlet disposed on the side wall of the tank body; a first baffle plate and a second baffle plate inclined within the tank body, the first and second baffle plates having opposite inclination directions, a first gap between the first baffle plate and the inner wall of the tank body, and a second gap between the second baffle plate and the inner wall of the tank body on the other side; and a filter plate inclined within the tank body, the filter plate having the same inclination direction as the first baffle plate. This utility model avoids direct impact of water flow on the bottom of the tank body, thus preventing the sludge already settled at the bottom from being stirred up, ensuring sedimentation effect and efficiency, enabling effective separation operations, improving overall work efficiency, and ensuring continuous operation of the equipment.

The utility model relates to an efficient wastewater treatment precipitation device, and belongs to the technical field of sewage treatment. The device mainly comprises a water inlet mixing reaction well, an inclined tube sedimentation tank, a first partition wall, a control platform, a dosing device, a first sludge discharge pipe, a water outlet well, a second partition wall, a second sludge discharge pipe, a sludge discharge pump, a supporting column, a bracket, a sedimentation inclined tube and an electric control cabinet, the device adopts the inclined tube sedimentation tank, so that the sedimentation area is increased, the sedimentation efficiency is improved, suspended solids and sediments in wastewater can be more quickly removed, the sedimentation efficiency and effect are improved, the time required for sedimentation is effectively shortened, and compared with a traditional mode of connecting a plurality of sedimentation tanks, the device is compact in structure, small in occupied area and low in cost. The device is simple in structure and suitable for occasions with limited space, the sludge discharge pump and the sludge discharge pipe are arranged, sediment can be automatically discharged, tedious operation of manual fishing is avoided, the workload is reduced, the adding amount and adding time of chemicals can be controlled through the electric control cabinet, and the effect and stability of sediment treatment are improved.

The utility model discloses an inclined plate separator for slurry treatment, which comprises a separation box, a slurry inlet is arranged on the top of one side of the separation box, a clear water outlet is arranged on the other side of the separation box, a plurality of inclined plate components are obliquely arranged in the separation box, and a U-shaped sedimentation channel is formed between every two adjacent inclined plate components. The front side edge and the rear side edge of the inclined plate assembly are fixedly connected through a sealing plate, a plurality of protrusions are arranged on the surface of the inner side of the U-shaped sedimentation channel and are in a prismatic table shape, the tips of the protrusions face upwards, a buffer plate is arranged at the position, below the mud inlet, in the separation box, a plurality of flow guide grooves are fixedly formed in the upper surface of the buffer plate, and sewage is evenly distributed into the inclined plate assembly. Compared with the prior art, the inclined plate separator has the advantages that the inner side of the U-shaped precipitation channel of the inclined plate assembly is provided with the frustum-shaped bulge with the upward tip end, so that the laminar flow state of water flow can be effectively destroyed, solid particles are easier to collide and condense, the precipitation process is greatly accelerated, and the precipitation efficiency is obviously improved compared with a traditional smooth inclined plate separator.

The utility model discloses plant rainwater collection and treatment equipment, which relates to the technical field of rainwater collection, and comprises a tank body, the tank body is a resin storage tank, the upper part and one end of the tank body are respectively and fixedly communicated with a water inlet pipe and a water outlet pipe, and a precipitation bin, a separation bin and a material guide bin which are communicated with each other are sequentially formed in the tank body from top to bottom; a fan impeller is rotatably connected to the inner wall of the partition bin, the outer side of the fan impeller makes contact with the inner wall of the partition bin, a spiral auger is rotatably connected to the inner wall of the material guide bin, and a material guide pipe fixedly communicates with the inner wall of one side of the material guide bin. The three cavities of the precipitation bin, the separation bin and the material guide bin are arranged, and the fan impeller, the spiral auger and other structures are arranged to be matched, so that precipitates in the precipitation bin can be easily cleaned, and the device can carry out cleaning operation without stopping the operation of the tank body; therefore, the working efficiency of the plant rainwater collection and treatment equipment and the convenience of cleaning sediments can be effectively improved.

The invention belongs to the technical field of alumina production. The invention provides a deep purification process of a sodium aluminate solution. The deep purification process comprises the steps of pretreatment, quaternary synergistic impurity removal, first-stage solid-liquid separation, oxalic acid selective decalcification, second-stage refined filtration and residue treatment. According to the method, a four-element synergistic impurity removal system of barium salt, sodium sulfide, quick lime and a desiliconizing agent is innovatively constructed, impurities such as silicon, iron, phosphorus, titanium, vanadium, copper, lead and zinc ions and organic matters in the sodium aluminate solution are synchronously and deeply removed through function division and synergistic interaction, calcium ions are selectively removed through oxalic acid, and finally the high-purity sodium aluminate solution is obtained for producing high-purity aluminum oxide. According to the method, the problems of poor impurity removal pertinence, high impurity residue and large secondary pollution risk of a traditional single agent are solved, the removal rate of various impurities is larger than or equal to 99%, Ca in the purified solution is smaller than or equal to 0.001 g / L, the method adapts to the Bayer process and sintering process aluminum oxide production process, the purification efficiency is high, the process is compact, and the method is environmentally friendly and economical.

The application discloses a small-grinding sesame oil production precipitation device and relates to the technical field of small-grinding sesame oil production.The application comprises a base, a driving plate is arranged on the base in a sliding mode, first, second and third gear racks are symmetrically arranged on the driving plate in sequence, a driving rod is arranged on the base in a rotating mode, a gear with missing teeth is arranged on the driving rod and engaged with the first and second gear racks, a bearing frame is hingedly arranged on the base, a driving gear engaged with the third gear rack is arranged on the hinging shaft of the bearing frame, and a placing groove for placing a container is arranged on the bearing frame.The application discloses a small-grinding sesame oil production precipitation device, which discards the traditional standing precipitation mode, and the container can be regularly reciprocated during use, so that the ground and stirred sesame is in a motion state, and the fixed objects can be precipitated faster, thereby improving the precipitation efficiency and guaranteeing the production efficiency of the small-grinding sesame oil, and the application is more practical.

The invention relates to the technical field of wastewater purification, and discloses wastewater treatment equipment and a multi-process combined glass grinding wastewater treatment method.The wastewater treatment equipment comprises an equipment shell, a wastewater electric flocculation mechanism is installed in the equipment shell, a conveying pump is installed in the equipment shell, and the exterior of the conveying pump is connected with a conveying pipeline; a precipitation mechanism is mounted in the equipment shell, and a dehydration mechanism is mounted in the equipment shell. After dehydration is completed, the internal weight of the dehydration filter screen is increased to drive the pollutant dehydration cylinder to move downwards, when the dehydration filter screen moves downwards, the dehydration filter screen filled with floccules can fall into the pollutant storage bin, and the separation baffle can separate the dehydration filter screen; then the supporting spring rebounds to drive the pollutant dehydration barrel to move upwards to clamp the dehydration filter screen, and the filtered floccules are stored in a segmented manner in time through the dehydration filter screen and then are subjected to unified treatment, so that the pollutants can be prevented from blocking the filter holes, and the maintenance pressure is reduced.

This utility model belongs to the field of wastewater treatment technology, specifically relating to a wastewater recycling and treatment system for deionized water production. It includes a wastewater tank and a finished water tank, with a sedimentation device and a filtration device installed between them. A resin softener and a concentration device are also installed between the wastewater tank and the finished water tank. Wastewater in the wastewater tank sequentially passes through the sedimentation device, filtration device, resin softener, and concentration device before flowing into the finished water tank. This utility model, by adding a resin softener and a concentration device to the existing sedimentation and filtration devices, constructs a multi-stage treatment system of "sedimentation-filtration-softening-concentration," deeply removing impurities from the wastewater and improving the water resource recovery rate.

The utility model provides a sedimentation device based on a gap-adjustable inclined plate, which belongs to the technical field of sedimentation tanks and comprises an inclined plate sedimentation tank, a flow guide wall and a flow guide plate, inclined plate assemblies with adjustable intervals are arranged in the same-direction large particle settling zone and the reverse small particle settling zone; the water collecting tank is arranged above the inclined plate sedimentation tank; the sedimentation mud bucket is arranged at the bottom of the inclined plate sedimentation tank; and the sludge discharge pipe is connected with the sediment sludge hopper. According to the utility model, the same-direction large particle settling zone and the reverse-direction small particle settling zone are arranged in sequence; through two-time precipitation, the pool type structure is optimized, the precipitation area is effectively increased, the precipitation time is effectively shortened, and the precipitation efficiency is correspondingly improved; in addition, inclined plate assemblies with adjustable intervals are arranged in the same-direction large particle settling zone and the reverse-direction small particle settling zone; the technical effects of effectively avoiding blockage and improving the water treatment efficiency are achieved.

This invention discloses a method for intelligent greeting, explanation, and lead generation in architectural exhibition halls using a digital human based on a Finite State Machine (FSM), belonging to the field of 3D virtual interaction and intelligent customer acquisition technology. The invention utilizes a real-time user behavior acquisition unit to collect 3D roaming behavior in milliseconds. The FSM control unit incorporates five mutually exclusive states and a standardized transition matrix, driving the digital human to intelligently switch between idle, greeting, precise explanation, lead generation guidance, and order placement states. The digital human driving unit employs lightweight rendering and lip-synced broadcasting for large architectural scenes. A scene-product linkage unit achieves native linkage between explanation and transaction. An intelligent guidance unit gently acquires high-intent leads. A data iteration unit optimizes interactive effects in a closed loop. This invention solves the industry pain points of traditional 3D exhibition halls, such as unattended operation, traffic loss, stiff interaction, disconnect between explanation and transaction, and inability to automatically acquire customers and generate leads. It achieves 365-day unattended intelligent operation, significantly improving user dwell time and business conversion rates. It is applicable to all scenarios, including 3D cloud exhibitions in the architectural industry chain, digital exhibition halls for building materials companies, industrial park investment promotion, and government and enterprise displays for urban renewal.

The utility model discloses an integrated sewage treatment system relates to sewage treatment technical field, and this system includes the pretreatment unit, biochemical treatment unit, secondary treatment unit and sludge treatment unit that connect gradually, and biochemical treatment unit includes the anaerobic pool, the anoxic MBBR pool and CWSBR biological pool that connect gradually, and CWSBR biological pool includes the aerobic MBBR pool, reaction area and balance area that arrange gradually, and secondary treatment unit is used to carry out flocculation precipitation and filtration treatment to sewage, and sludge treatment unit is used to carry out centralized treatment to the sludge of each unit generation, the utility model discloses through multistage biochemical coupling and depth treatment combination, and the efficiency of denitrification and phosphorus removal and the anti -impact load capacity of a large margin are promoted, and the effluent quality is stable, and the sludge centralized disposal, and the system integration degree is high, and the land area is small, and the operation cost is low, is applicable to town sewage and industrial waste water treatment.

The invention relates to the technical field of sewage treatment equipment, and provides sewage treatment equipment based on an automatic dosing structure, the sewage treatment equipment comprises a sedimentation tank, and further comprises a supporting plate, a supporting frame, a supporting column, a dosing pipe, a dosing mechanism, a chemical supply mechanism and a stirring mechanism, the supporting plate is arranged on the top side of the sedimentation tank, and an electric sliding table is mounted on the top side wall of the sedimentation tank; the output end of the electric sliding table is fixedly connected with the supporting plate, the supporting frame is arranged in the sedimentation tank, a connecting column is fixedly arranged between the supporting frame and the supporting plate, a plurality of supporting columns are rotationally arranged in the supporting frame, supporting grooves are formed in the bottom side walls of the supporting columns, and chemical adding pipes are fixedly arranged on the two opposite side walls of the supporting columns. By means of the technical scheme, the sewage treatment device is used for solving the technical problem that in the prior art, the flocculation powder and sewage mixing effect is poor, and consequently the sedimentation efficiency is affected.

The application discloses a pickled vegetable wastewater filtering device, which comprises a filtering box body, the inside of the filtering box body is divided into a cleaning cavity and a sedimentation cavity through a partition plate. A filtering assembly is arranged on the partition plate and comprises a filtering barrel and a filtering cover with multiple layers of decreasing pore diameters. The top of the filtering barrel is limited from moving by a resisting assembly (containing a torsional spring and a torsional resisting arm). A sedimentation guide table and an openable turnover door are arranged at the bottom of the sedimentation cavity. After being filtered through multiple stages, the wastewater is guided to the sedimentation groove along an inclined surface to be deposited. The device realizes the suspension interception and pretreatment of pickled vegetable wastewater through multi-stage filtration, uniform water distribution and efficient sedimentation, and has the advantages of high filtering precision, convenient cleaning, stable structure and the like.

The present application relates to a kind of methods for removing heavy metals in wet-process phosphoric acid, it is characterized in that comprising the following steps: (1) phosphorite is crushed, flotation pretreatment is mixed with sulfuric acid after 1:1.3-1.5 by mass ratio, under the condition of 80-87 ℃ 30-90 min reaction is formed slurry;(2) before slurry enters filter, to slurry pump before adding modifier and heavy metal removal agent;(3) the ore pulp is filtered to obtain dilute phosphoric acid, dilute phosphoric acid is settled, concentrated to obtain concentrated phosphoric acid crude product;Phosphoric acid crude product is settled, separated and purified, to obtain pure phosphoric acid.The present application is combined by using modifier and heavy metal removal agent, aims at realizing the synchronous efficient removal of multiple heavy metals, breaks through the industry problem of poor selectivity in acidic system and serious secondary pollution.