39results about How to "Settling fast" patented technology

The invention discloses an advanced treatment method of tungsten beneficiation wastewater, which is characterized in that a composite flocculant is adopted to flocculate the tungsten beneficiation wastewater, and the composite flocculant is mainly composed of cationic polyacrylamide, a flocculant A and lignocellulose, the flocculant A comprises at least one of polyferric sulfate, polyaluminum chloride, polyaluminum ferric chloride, polyaluminum ferric sulfate, ferric sulfate, ferrous sulfate and aluminum chloride. According to the advanced treatment method for the tungsten beneficiation wastewater, under the action of the composite flocculant, the cost of a treatment agent can be reduced to about 0.16-0.20 yuan / m < 3 >, the cost reduction amplitude is as high as 80% or above, the treatment time can be shortened to be within 10 min, the precipitation time is greatly shortened, meanwhile, suspended solids in the wastewater can be effectively removed, actual production requirements are met, and the method is suitable for industrial production. The method has the advantages of low treatment cost, high treatment efficiency, good removal effect, good adaptability and the like, can realize advanced treatment of the tungsten beneficiation wastewater, and is high in use value and good in application prospect.

The present application relates to a kind of demulsifier for oily wastewater and its preparation method, belong to oily wastewater treatment technical field.The raw material component of the demulsifier includes 15-25wt% iron salt, 10-20wt% aluminum salt, 5-10wt% auxiliary salt and the balance deionized water;Auxiliary salt is the complex system of magnesium salt and zirconium salt;The demulsifier is complexed into intermediate by its raw material component, then polymerized at the temperature of ≤30 ℃.The synergistic effect of iron ion, aluminum ion, magnesium ion and zirconium ion, the prepared demulsifier keeps the oil removal rate at 95% or more in the range of temperature 5-40 ℃, salinity 0.5%-5%, pH 4.0-10.0, COD removal rate is more than 85%, and the performance stability is significantly better than traditional demulsifier, with high demulsification efficiency, low sludge yield, strong adaptability, green environmental protection, low cost and wide application scenarios, with high market value.

The application relates to the technical field of industrial sewage treatment equipment, and particularly discloses an integrated intelligent heavy medium feeding and efficient sludge concentration system, which comprises a sewage treatment unit, a heavy medium circulation unit and a sludge-water treatment unit. The heavy medium circulation unit comprises a sludge pumping pipe, the sludge pumping pipe is arranged in the inside of a sludge discharge groove, one side of the sludge pumping pipe is fixedly connected with a pump, and one side of a liquid outlet of the pump is fixedly connected with a hydraulic heavy medium separator. In the scheme, the hydraulic heavy medium separator is coupled with the sludge-water treatment unit with an internally-arranged flexible flat plate dewatering membrane to form a closed loop structure of 'heavy medium recovery-overflow sludge-water forced pre-concentration', the overflow sludge-water with a high water content of 99.2% to 99.6% in the traditional process is concentrated by using the anti-pollution and unbroken wire membrane assembly for physical interception, the sludge volume is reduced by more than 60%, and the industry pain points of large sludge quantity and high rear-end dewatering load in the traditional process are solved.

The invention relates to a water treatment agent and a preparation method and application thereof, and the preparation method comprises the following steps: (1) adding an organic additive and hydrogen peroxide into an ammonia water solution to prepare a mixed solution I, carrying out electrolytic reaction, and aging to obtain sol; (2) dissolving acrylamide and a cationic monomer in water to obtain a mixed solution II; (3) adding the mixed solution II into the sol in the step (1) to obtain a mixed solution III; and (4) adding an initiator into the mixed solution III, and carrying out polymerization reaction to prepare the water treatment agent. According to the method disclosed by the invention, introduction of heteroanions is avoided, efficient in-situ polymerization of organic components on inorganic components is improved, the problem of low molecular weight of the medicament caused by initiation of an anion inhibition chain is solved, and the prepared medicament has excellent defluorination and flocculation capabilities.

This application provides a two-step flocculation adaptive control method for tailings slurry based on FBRM online monitoring, relating to the field of tailings treatment technology in the mineral processing industry. The method includes: online monitoring of the original tailings slurry using focused beam reflection measurement under no-doping conditions to obtain the particle size baseline characteristics of the original slurry; adding a primary flocculant to obtain a first slurry, and monitoring the dynamic particle size characteristics of the flocs during the flocculation process in real time; based on the dynamic particle size characteristics of the first slurry, determining whether the first slurry has reached a ready state suitable for secondary flocculation according to a preset primary flocculation completion criterion; when the first slurry reaches the ready state, automatically initiating the addition of a secondary flocculant to obtain a second slurry, and providing real-time feedback on the particle size distribution change in the second slurry as a control signal to adaptively adjust the dosing rate of the secondary flocculant. This method can automatically adapt to changes in ore properties, solid content, and operating conditions, and has strong potential for widespread application.

This invention relates to the field of dust removal equipment technology, and discloses an environmentally friendly dust removal device for building decoration engineering. The main body shell includes a cavity formed within itself; the adjustment mechanism includes a flow guiding unit disposed within the cavity and an air inlet duct disposed outside the cavity. The flow guiding unit includes a spiral tube, a limiting plate fixedly connected to the spiral tube, and several fixing threads fixedly connected to the limiting plate. The flow guiding unit guides the airflow entering the cavity to move spirally along the spiral tube and the fixing threads. This environmentally friendly dust removal device for building decoration engineering, through the coordinated guidance of the airflow by the spiral tube and the fixing threads, and the physical obstruction formed on both sides of the airflow by the limiting plates, not only strengthens the spiral strength of the airflow but also shortens the movement distance of fine dust, thus solving the defects of existing technologies where fine dust is difficult to effectively capture due to low centrifugal force and long movement distance.

The invention relates to the technical field of waste liquid treatment, in particular to a self-adaptive pH amphoteric polymer-calcium salt compounded bentonite slurry rapid sedimentation treatment method. According to the method, a calcium salt working solution, a buffer working solution, an amphoteric polymer working solution and a functionalized calcium carbonate micro-powder dispersion solution are added in stages, and the stirring speed and time are accurately controlled, so that rapid sedimentation of the slurry is realized. The amphoteric polymer is formed by copolymerizing a plurality of monomers and has wide pH adaptability; the functionalized calcium carbonate micro powder is used as a weighting carrier to enhance the floc density. The method solves the problems of slow sedimentation, high supernatant turbidity and poor adaptability to water quality fluctuation in the traditional method, has the advantages of high sedimentation speed and high supernatant clarity, can be directly reused, and is suitable for bentonite slurry treatment in the fields of electric power engineering and the like.

The application discloses a high-efficiency wastewater mercury removal agent and a preparation method thereof, belongs to the field of wastewater mercury removal, and comprises 20-50 parts of inorganic particles, wherein the inorganic particles are at least one of bentonite, zeolite or molecular sieve, the surface of the inorganic particles is chemically modified by using 1-5 parts of a silane coupling agent, and then the surface is adsorbed by 1-10 parts of an organic thioamide reagent; the bentonite is calcium-based bentonite or sodium-based bentonite with a blue absorption capacity of 40-50 g / 100 g and an expansion ratio of 20-40, the zeolite is clinoptilolite or mordenite, and the molecular sieve is 3A or 4A molecular sieve; the silane coupling agent is at least one of gamma-aminopropyl triethoxysilane, gamma-glycidyl ether oxygen propyl trimethoxysilane, methacryloyl trimethoxysilane, 2-(3,4-epoxy cyclohexyl) ethyl trimethoxysilane and 3-mercapto propyl trimethoxysilane; and the organic thioamide reagent is one or both of thiosemicarbazide and dithizone.

The utility model provides a sludge treatment sludge discharge pipe filter tank, which comprises a filter tank body, two sides of the filter tank body are respectively communicated with a sludge inlet pipe and a sludge outlet pipe, a filter assembly is arranged in the filter tank body, the filter assembly comprises a filter plate, the filter plate comprises an inclined filter plate and a horizontal filter plate, and the inclined filter plate and the horizontal filter plate are arranged in the filter tank body. The filtering tank body is divided into a first cavity and a second cavity by the filtering plate, the first cavity is communicated with the sludge inlet pipe, and the second cavity is communicated with the sludge outlet pipe. In the filtering process, muddy water enters the first cavity of the filtering tank body through the mud inlet pipe and then enters the second cavity after being filtered by the filtering plate, and the muddy water entering the second cavity enters the lifting pump after being discharged through the mud outlet pipe, so that impurities in the muddy water are prevented from entering the lifting pump, and the protection of the lifting pump is facilitated.

This invention discloses a copper ion scavenging agent suitable for a wide pH range, its preparation method, and its application. The scavenging agent comprises the following components by mass: 10-30 parts trithiocarbonate, 5-20 parts N,N-dimethylaminodithiocarbamate, and 1-5 parts sodium citrate. The preparation method is as follows: (1) Add water to a sodium citrate solution and stir to prepare a buffer solution A; (2) Add trithiocarbonate and N,N-dimethylaminodithiocarbamate to buffer solution A, stir until completely dissolved, and filter to obtain the final product. This invention has the advantages of a wider pH range, copper removal effect that varies with water quality, stable copper removal effect, fast reaction speed, and rapid floc settling. After treatment, the concentration of each copper ion is less than 0.1 mg / L, the iron content is less than 0.0001%, and the lead content is less than 0.0001%, meeting the environmental emission requirements.

This invention relates to the field of wastewater treatment technology, specifically to a process and system for removing heavy metals from ink wastewater. It includes the following steps: coagulating ink wastewater with a metal composite coagulant, adsorbing and removing sludge wastewater with an ink sludge-based adsorbent, and filtering wastewater using a catechol-modified polyethersulfone membrane, followed by detection. This invention utilizes high-iron copper slag with titanium tetrachloride and acetylacetone to prepare a metal composite coagulant, transforming the copper slag into a high-value-added water treatment agent. This significantly reduces the production cost of the coagulant. Through the synergistic leaching of dilute sulfuric acid and hydrogen peroxide, the iron element in the copper slag is efficiently extracted and oxidized into Fe, which has a strong coagulation effect. 3+ The trace amounts of copper and other metal ions dissolved also provide a basis for subsequent composite reactions, thus improving the overall treatment efficiency and effluent quality of oily sludge wastewater.

The invention relates to the technical field of dust suppression devices, and discloses a dust suppression device for fiber composite material production, which comprises a dust suppression box body, a vibration mechanism and a disassembly mechanism, the outer surface of the dust suppression box body is fixedly connected with a support frame, the vibration mechanism is arranged in the dust suppression box body, and the disassembly mechanism is arranged at the bottom of the dust suppression box body. By arranging the vibration mechanism, specifically, after a motor is started, an eccentric rod drives rotating discs on the two sides to synchronously run, the eccentric rod slides in a sliding groove of a swing rod, the swing rod swings in a reciprocating mode, a top extrusion block extrudes an arc-shaped block at the bottom of a sliding rod, and the sliding rod is driven to move up and down in a fixed frame; when the dust suppression device works, an impact rod and an impact block are synchronously driven to move upwards to impact a first filter screen, a first spring and a second spring are compressed, and after an extrusion block is separated from an arc-shaped block, the first spring and the second spring respectively drive the impact block and a sliding rod to reset and continuously vibrate dust on the surface of the first filter screen, so that blockage of the first filter screen is reduced, and continuity of dust suppression work is improved.

This invention relates to a method for preparing high-purity sodium pyroantimonate from antimony-containing waste, belonging to the field of sodium pyroantimonate preparation technology. Specifically, the method includes: crushing and ball milling the antimony-containing waste, followed by sulfidation-alkali leaching in the presence of modified inorganic mineral additives. Antimony enters the solution as Na3[SbS3], while lead, copper, and iron precipitate as sulfides in the slag phase. The additives improve the settling and filtration performance of the leaching slag and assist in the adsorption of colloidal arsenic. After deep purification of the leachate with sodium sulfide, the mother liquor is cooled and crystallized to remove arsenic, which is separated as sodium arsenite crystals. The purified liquid undergoes air oxidation precipitation under seed crystal induction, followed by liquid-solid separation, washing, and drying to obtain high-purity sodium pyroantimonate product. This invention meets the quality requirements of electronic-grade glass clarifying agents, and features strong process compatibility, controllable additive costs, and recyclable mother liquor.

The utility model discloses a cutting fluid floating oil and sediment separating device, which belongs to the technical field of cutting fluid production equipment and comprises a base, an operating platform and a separating box body, and the interior of the box body is divided into a scum separating cavity, a left filtering chamber and a right filtering chamber through a main partition plate and an auxiliary partition plate. And in cooperation with a first flow guide baffle, an arc-shaped flow guide plate, a stepped baffle and other assemblies, physical separation of floating oil and sediment in the cutting fluid is achieved. The sediment collecting assembly is arranged in a sliding mode through a drawing notch, a metal filter screen and a magnet block are arranged in the sediment collecting assembly, and non-metal impurities and magnetic metal filings can be collected in a classified mode. Due to the layout design of the liquid inlet, the liquid outlet and the double blow-down valves, stable flowing of the fluid and partitioned discharge of impurities are ensured. According to the device, through a multi-stage cavity structure and a flow guide system, floating oil blocking, solid grading sedimentation and convenient maintenance are efficiently achieved, and the cutting fluid preliminary purification efficiency and resource recycling convenience are improved.

The utility model discloses an air return device for an intensive curing barn, which comprises a main body, an air outlet pipe is arranged on one side of the main body, a connecting plate is arranged on the inner side of the air outlet pipe, a water tank is arranged on the other side of the main body, water pipes are uniformly arranged at the upper end of the water tank, a movable plate is arranged below the water tank, and the movable plate is arranged below the water tank. A fan is arranged on the upper surface of the main body, an air return pipe is arranged on the inner side of the fan, a filter plate is arranged on the inner side of the air return pipe, a handle is arranged on one side of the filter plate, a mounting plate is arranged at one end of the air return pipe, and an air return opening is formed in the outer surface of the mounting plate; the air return device has the advantages that harmful substances in air in the curing barn can be further absorbed through the dust removal net and the activated carbon adsorption net, the harmful substances are prevented from returning to the curing barn again, the air return effect of the device is improved, the air can be dried through the drying cotton, water vapor of the water mist spray head is prevented from entering the oven, and the drying effect is improved. The air return effect of the device is improved.

The invention relates to the field of recycling of positive electrode materials of waste lithium ion batteries, in particular to a method for removing aluminum from lithium extraction residues through cooperation of inorganic acid and alkali. The method comprises the following steps: 1) roasting the lithium iron phosphate lithium extraction residues to obtain iron phosphorus residues; 2) mixing the iron-phosphorus slag with an alkaline solution and reacting to obtain an alkaline leaching solution and alkaline leaching slag; (3) adjusting the pH value of the alkaline leaching solution and removing aluminum to obtain aluminum-removed liquid 1; 4) mixing the alkaline leaching residues with inorganic acid and reacting to obtain an acid leaching solution; 5) mixing the pickle liquor with an aluminum removal agent and reacting to obtain aluminum removal liquid 2; and 6) mixing the aluminum-removed liquid 1 with the aluminum-removed liquid 2 to obtain a purified iron-phosphorus liquid. The lithium extraction residue inorganic acid-alkali synergistic aluminum removal process provided by the invention realizes deep removal of aluminum impurities, has high iron and phosphorus recovery rates, does not introduce fluorine elements in the whole process flow, and provides a high-quality raw material for regeneration of battery-grade iron phosphate.

This invention relates to the field of water treatment technology and provides a high-speed micro-sand sedimentation process device with sludge thickening function. It includes a coagulation tank, a sand injection tank, a flocculation tank, and a sedimentation tank. It also includes a reflux system: an internal reflux system comprising an internal reflux pipe with its opening at the bottom of the sedimentation tank, and a micro-sand reflux pump and a hydrocyclone connected to the internal reflux pipe; and an external reflux system comprising an external reflux pipe with a distribution trough and a micro-sand reflux pump connected to it, the micro-sand reflux pump being located on one side of the sedimentation tank. This invention fully utilizes the ballast effect of the micro-sand, causing the formed suspended solid flocs to settle rapidly. Through the external reflux system, some of the discharged sludge is reintroduced into the internal reflux system to achieve sludge thickening, greatly reducing the amount of sludge discharged from the entire system and significantly increasing the sludge concentration. This results in high sludge concentration, good effluent quality, small footprint, and low power consumption.

The utility model belongs to the technical field of pipeline equipment, and particularly relates to a mud elbow well seat which comprises a well seat body, a baffle and a flow guide mechanism, an inlet pipe and an outlet pipe are installed on the well seat body, the inlet pipe and the outlet pipe form an elbow structure on the well seat body, and a mud settling chamber is arranged in the well seat body; the baffle plate is mounted on the inner wall of the sludge chamber, one end of the baffle plate close to the inlet pipe and the inner wall of the sludge chamber form a water channel, and an oil storage area is formed below; the flow guide mechanism is installed on the inner wall of the well base, penetrates through the baffle to be communicated with the inlet pipe and the silt settling chamber and is used for directly guiding water of the inlet pipe to the lower end face of the baffle, and the installation height of the inlet pipe and the installation height of the outlet pipe are both higher than the installation height of the baffle. According to the desilting elbow well seat, the baffle is arranged, water in the inlet pipe is guided below the baffle through the flow guide mechanism, water and oil dirt in the inlet pipe can enter the outlet pipe only through the position below the baffle, the water passing channel is arranged at the end close to the inlet pipe, silt, impurities and oil dirt can be intercepted, and the situation that the silt, the impurities and the oil dirt are carried again by high flow and flow out of the outlet pipe is reduced.

The application discloses a kind of based on non-complex state manganese oxidation technology's reclaimed water preparation method, it is related to reclaimed water preparation technical field, including following material: phosphate buffer, potassium permanganate, ferrous sulfide, modified chitosan, modified polyaspartic acid, glutamic acid diacetic acid tetrasodium;The application maintains water quality alkaline environment by adding phosphate buffer, greatly inhibits the risk of toxic gas generated by ferrous sulfide hydrolysis, guarantees the safety of preparation process;The modified chitosan added, by electric neutralization and adsorption bridging, small precipitate is quickly flocculated into sedimentable alum flower, realizes mud-water separation;By adding modified polyaspartic acid, can prevent the scale formed by precipitation in irrigation pipeline or equipment, and glutamic acid diacetic acid tetrasodium synergistic effect, jointly ensure the chemical stability of reclaimed water in storage and conveying process, protect irrigation system, water quality long-term stability.

The invention discloses a glass cutting fluid containing a gemini quaternary ammonium salt settling agent, and belongs to the technical field of glass processing. The glass cutting fluid comprises the following components in percentage by weight: 5-20% of an extreme pressure additive, 6-15% of a gemini quaternary ammonium salt settling agent, 5-20% of polyol and 45-85% of deionized water. According to the glass cutting fluid containing the gemini quaternary ammonium salt settling agent, the gemini quaternary ammonium salt settling agent is prepared through synthesis, glass powder, solid particles, metal ions and flocculent sediments are rapidly settled, suspension and caking are avoided, scratches to the surface of optical glass are reduced, the sterilization performance is good, bacterium breeding can be effectively inhibited, and the settling life of the glass cutting fluid is prolonged; and the cutting fluid is non-toxic, does not hurt the skin, and is green and environment-friendly.

This invention belongs to the field of wastewater treatment technology and discloses a self-emulsifying oily wastewater removal agent and its preparation method. The self-emulsifying oily wastewater removal agent comprises the following raw materials in parts by weight: 30-50 parts of sulfomethylated tannin, 15-25 parts of aluminum sulfate, 0.5-2 parts of polyacrylamide, 1-3 parts of sodium hydroxide, and 10-20 parts of polyaluminum chloride. This invention applies sulfomethylated tannin to the removal of self-emulsifying oily wastewater. Through the emulsifying and disrupting effect of sulfomethylated tannin, the emulsified state of oil droplets is effectively destroyed, thereby promoting oil-water separation. The macromolecular structure and active groups of this modified tannin provide more adsorption sites and stronger bridging effects, improving the speed and efficiency of oil droplet aggregation.

The utility model discloses a sedimentation tank, belongs to the technical field of sewage treatment equipment, and particularly relates to a super-magnetic loading sedimentation tank which comprises a PAC (Poly Ammonium Chloride) stirring tank, a PAM (Polyacrylamide) stirring tank, a flocculation tank, a sludge scraping tank, a sludge buffer tank and a sludge treatment tank, the input end of the PAC stirring tank is provided with a water inlet pipe, the output end of the PAC stirring tank is connected with the input end of the PAM stirring tank, the output end of the PAM stirring tank is connected with the input end of the flocculation tank, the sludge scraping tank is connected with the output end of the flocculation tank through a communicating pipe, and the sludge buffer tank is connected with the sludge scraping tank; according to the super-magnetic loading sedimentation tank disclosed by the utility model, magnetic seeds and a coagulant are added, and the acting force of a magnetic field on charged particles is utilized, so that suspended particles and colloidal substances are quickly coagulated into large particles, and water purification is realized through sedimentation or filtration. And the coagulating sedimentation time is greatly shortened in the process, so that rapid sedimentation is realized.

The invention relates to the field of powder grading, in particular to a powder hollowness grading device and method based on terminal settling velocity difference. The device comprises a feeding unit used for supplying powder; the dispersion conveying unit comprises a conveying channel and two fan blade rotating devices, the conveying channel is obliquely arranged downwards from left to right and used for receiving the powder supplied by the feeding unit and allowing the powder to slide down along the conveying channel, and fan blades of the two fan blade rotating devices are embedded in the conveying channel side by side in the front-back direction; the airflow grading unit comprises an air cavity and an air outlet device, the air cavity is obliquely arranged upwards from left to right, an air outlet is formed in the upper end of the air cavity, an air inlet is formed in the lower end of the air cavity, the air outlet directly faces an outlet in the lower end of the conveying channel, and the air outlet device is used for blowing air to the air inlet of the air cavity; and the collecting unit is used for collecting the powder graded by the airflow grading unit. Accurate grading of the hollowness degree of the powder can be achieved based on the density difference, and the purity of the target solid powder is improved.

The invention discloses a preparation method and application of an organic silicon modified aluminum-zirconium / titanium bimetallic composite fluorine removal agent (CSAZ / CSAT), and belongs to the technical field of water treatment. Zirconium tetrachloride or diluted titanium tetrachloride is compounded with aluminum chloride to construct a bimetallic framework. Meanwhile, vinyltriethoxysilane (VTES) is introduced as an organic modifier, and heterogeneous copolymerization is carried out on an organic silicon hydrolysate and metal hydroxyl by controlling the dripping rate and the reaction temperature. According to the fluorine removal agent, by utilizing the bridging effect of organic silicon and the synergistic effect of double metals, the adsorption, complexation and net capture capacities on fluorine ions are remarkably enhanced. Experiments show that when the molar ratio of Al to Zr is 9: 1 (CSAZ) or the molar ratio of Al to Ti is 14: 1 (CSAT), the defluorination effect is optimal. When the agent is applied, the pH value does not need to be adjusted, a coagulant aid does not need to be added, efficient removal of fluorine ions can be achieved only through a single agent, the agent has the advantages of being low in dosage, neutral in effluent pH value and the like, and the industrial problems that a traditional fluorine removal process is long in process, large in acid and alkali consumption and difficult in sludge treatment are effectively solved.

The present application relates to the technical field of thickener, and particularly discloses a recycling device for backwater of a beneficiation thickener, which comprises a shell, a guide body fixedly connected inside the shell, a partition plate fixedly connected inside the guide body, a filter screen fixedly connected to the lower end of the partition plate, an overflow pipe fixedly connected to one side of the guide body, a drain pipe fixedly connected to the other side of the guide body, the height of the drain pipe being lower than that of the overflow pipe, a discharge port formed in the lower end of the guide body, a sliding block slidingly connected inside the guide body, an opening formed in the sliding block, a feeding mechanism arranged at the upper end of the sliding block, a cleaning mechanism arranged inside the guide body, and a driving assembly arranged at one end of the guide body.

This application discloses an integrated infrastructure wastewater treatment system, including an intelligent monitoring unit for controlling wastewater flow and collecting wastewater parameters at different locations, and a classification collection unit comprising collection mechanism A, collection mechanism B, wastewater tank A, wastewater tank, and collection mechanism C for separately collecting mud wastewater, cleaning wastewater, domestic wastewater, chemical wastewater, and surface mixed wastewater generated in the infrastructure construction area; a pretreatment unit, a core treatment unit, an advanced treatment unit, and a reuse and discharge unit. This invention classifies and collects different types of wastewater and sewage, then processes them through pretreatment, core treatment, and advanced treatment units to treat pollutants in different categories step by step. In particular, it innovatively uses feedforward dynamic compensation and dynamic pH monitoring to perform real-time chemical dosing, avoiding problems such as low chemical utilization leading to waste or insufficient chemical addition resulting in poor treatment effects.

The utility model provides a flocculation settling tank for industrial wastewater, which comprises a flocculation tank, the top of the flocculation tank is sealed through a sealing cover, two sides of the middle of the flocculation tank are respectively connected with a feed pipe and a dosing pipe through pipelines, two sides of the bottom of the flocculation tank are connected with a discharge pipe and a backwashing pipe through pipelines, and the top of the sealing cover is fixedly connected with a driving box. An extrusion assembly is arranged in the flocculation tank, and the extrusion assembly is connected with a driving assembly arranged in the driving box; the stirring assembly comprises a stirring motor, the stirring motor is fixedly connected to the lower end face of the flocculation tank through a mounting base, the output end of the stirring motor is rotationally connected with a rotating shaft, and a stirring plate is fixedly connected to the rotating shaft. According to the utility model, the pressing plate and the extrusion assembly are arranged, and the driving assembly is utilized to accurately control the pressing stroke of the pressing plate, so that the flocculated clear liquid is extruded to rise and separate through the through hole, the flocculated liquid is preliminarily separated, the water content of the floc below is reduced, and the settling speed of the discharged floc is accelerated.

This invention discloses a polyaluminum chloride-based composite flocculant and its preparation method, belonging to the field of water treatment agent technology. The preparation method includes: acid activation of natural attapulgite to obtain acid-modified nano-attapulgite crystal nuclei; hydrolysis of liquid polyaluminum chloride, basic zirconium chloride, and ferric chloride to form clusters, followed by the addition of polyepoxysuccinic acid of a specific molecular weight for dynamic shielding to obtain a shielding liquid; dispersing the crystal nuclei into the shielding liquid; and slowly adding carboxymethyl chitosan solution and anionic polyacrylamide solution sequentially at a specific rotation speed to obtain the liquid composite flocculant. This invention overcomes the problem of easy gelation of high-concentration liquid flocculants by strictly controlling the dosing sequence and the dynamic spatial shielding of polyepoxysuccinic acid; by utilizing the synergistic effect of zirconium-aluminum bimetallic flocculant and the specific chelation of carboxymethyl chitosan, excellent low-temperature and low-turbidity water removal rate is achieved while strictly controlling residual aluminum; combined with acid-modified heavy crystal nuclei, the sedimentation rate of flocs is significantly improved.

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment desliming machine which comprises a base, a semi-cylindrical containing groove is formed in the upper portion of the base, a plurality of arc-shaped partition plates are evenly arranged in the semi-cylindrical containing groove in the axial direction of the semi-cylindrical containing groove, and the sewage treatment desliming machine further comprises a water taking mechanism and a posture adjusting mechanism; the water taking mechanism comprises a driving shaft which is coaxial with the semi-cylindrical containing groove and can rotate directionally, the driving shaft is coaxially sleeved with a central flow guide pipe, a water collecting tank is arranged on the outer side of the central flow guide pipe in the circumferential direction, and semi-oval water collectors communicated with the water collecting tank are evenly distributed on the side, away from the central flow guide pipe, of the water collecting tank. A plurality of water inlet holes are formed in the cambered surface of one side of the semi-elliptical water collector. According to the sewage treatment desliming machine provided by the invention, the rotary semi-elliptical water collector with the water inlet holes is arranged in the semi-cylindrical containing groove, so that continuous separation of sewage and sludge is realized, and compared with traditional intermittent extrusion type dewatering equipment, the sewage treatment desliming machine has the advantage that the desliming operation time is remarkably prolonged.

The invention relates to the technical field of detergent wastewater treatment, in particular to a method for treating detergent wastewater by utilizing foundry waste sand regeneration waste. According to the method, waste generated after foundry waste sand regeneration is taken as a basis, and the detergent wastewater is pretreated by establishing a'Fenton oxidation + flocculation precipitation 'dual system, so that the problem of waste discharge of a novel regeneration process is solved, efficient degradation of COD (Chemical Oxygen Demand) content in the detergent wastewater is also realized, and the purposes of'waste recycling' and'treating waste with waste 'are achieved.