135 results about "Hard water" patented technology

The invention discloses a potassium fulvate chelated macroelement water-soluble fertilizer with stress resistance and growth promotion functions, and relates to the technical field of water-soluble fertilizers, the potassium fulvate chelated macroelement water-soluble fertilizer comprises the following raw materials by weight: 167-210 parts of mineral source potassium fulvate, 450-460 parts of potassium nitrate, 300-310 parts of urea, 150-160 parts of potassium dihydrogen phosphate, 30-40 parts of potassium sulfate, 15-25 parts of EDTA-disodium, and 5-15 parts of citric acid. 0.5 to 1.5 parts of brassinolide and 4 to 6 parts of polyaspartic acid; according to the potassium fulvate chelated macroelement water-soluble fertilizer with the stress-resistant and growth-promoting functions, through chelation cooperation of potassium fulvate and nitrogen, phosphorus and potassium, the solubility of the chelated phosphorus element in water is increased, and the chelated phosphorus element can be more uniformly distributed in soil; by adopting an EDTA-disodium and citric acid composite chelating system, volatilization and loss of nitrogen elements are reduced, the problem of precipitation of calcium, magnesium and phosphorus is solved, and the soil conditioner is suitable for hard water areas and especially has outstanding performance in saline-alkali soil and arid areas.

The embodiment of the utility model discloses a purified water dispenser which comprises a water softening system, a water purifying system and a controller, a water inlet of the water softening system is used for receiving raw water, and a water outlet of the water softening system can output soft water; a water inlet of the water purification system is communicated with a water outlet of the water softening system, a water outlet of the water purification system is used for outputting purified water, the water purification system comprises a filtering system and a wastewater drainage pipeline, a water inlet of the filtering system is communicated with the water inlet of the water purification system, and a water outlet of the filtering system is communicated with the water outlet of the water purification system; a wastewater port of the filtering system is communicated with a wastewater drainage pipeline; the controller is connected with the soft water system and is connected with the wastewater drainage pipeline; when the water outlet of the water softening system outputs hard water, the controller is used for controlling the wastewater drainage pipeline to increase the wastewater discharge capacity so as to protect the filtering system, and the filter element can have the normal service life.

The invention relates to the technical field of cleaning agents, and discloses a biodegradable environment-friendly cleaning agent, which comprises: a composite surfactant system comprising at least one nonionic surfactant, an ampholytic surfactant and a chelating functional surfactant; the plant extract oil system comprises limonene and a eucalyptus oil mixture; the functional particle system comprises nanoscale enzyme microcapsules and slow-release type oxidized particles; the natural polysaccharide stable network system comprises at least two polysaccharide thickeners and a bio-based cross-linking agent, and the assistant system comprises a metal ion chelating agent, a buffer acid system and water. By introducing sodium polyaspartate as a green chelating surfactant, efficient chelating of calcium and magnesium ions under a hard water condition is realized, the cleaning power is remarkably improved, water stain residues are reduced, and the cleaning performance with wider adaptability is obtained.

The embodiment of the utility model discloses a purified water dispenser, a control method and a computer readable storage medium, the purified water dispenser comprises a water softening system, a water purifying system and a controller, a water inlet of the water softening system is used for connecting tap water, and a water outlet of the water softening system can output soft water; a water inlet of the water purification system is communicated with a water outlet of the water softening system, a water outlet of the water purification system is used for outputting purified water, the water purification system comprises a pressurizing pipeline and a filtering system, a water inlet of the pressurizing pipeline is communicated with the water inlet of the water purification system, and a water outlet of the pressurizing pipeline is communicated with a water inlet of the filtering system; a water outlet of the filtering system is communicated with a water outlet of the water purifying system; the controller is connected with the water softening system and is connected with the pressurizing pipeline; when the water outlet of the water softening system outputs hard water, the controller can control the water pressure in the pressurizing pipeline to be reduced, so that the reverse osmosis filter element can reach the normal service life.

The invention provides an efficient boiler scale and corrosion inhibition composite agent and a preparation method thereof, and belongs to the technical field of water treatment agents. The sulfonated polycarboxylic acid copolymer is introduced, crystal nucleus formation is inhibited through chelation of carboxylic acid groups of the sulfonated polycarboxylic acid copolymer, the dispersing capacity and hard water tolerance are improved through sulfonic acid groups, normal growth of microcrystals can be adsorbed and interfered through regulation and control of isopropanol on molecular weight, and loose scale bodies easy to remove are promoted to be formed; the polyether grafted copolymer is used as an efficient dispersing agent, the main chain of the polyether grafted copolymer is responsible for adsorbing and anchoring generated tiny scale bodies, and extended polyether long side chains of the polyether grafted copolymer form a steric hindrance shielding layer to wrap particles and suspend stably, so that the scale bodies are prevented from gathering and growing up; the two components cooperate to form a scale inhibition defense line, and cooperate with auxiliary agents such as the compound amine and the deoxidant in the system to construct a comprehensive protection network, so that long-period stable operation of the boiler system is guaranteed.

The invention discloses a preparation method of a pesticide pollution remediation agent for groundwater of karst landforms, and relates to the technical field of groundwater pollution remediation. The method has the effect of enhancing pesticide degradation, pesticide pollutants can be efficiently degraded in a complex environment of karst underground water by compounding hard water-resistant fungi, dehalogenation bacteria and denitrifying bacteria, and a better remediation effect is achieved; the medicament can improve the stability and the adsorption capacity of the carrier, the bionic calcium phosphate nano carrier is adopted, the specific surface area is high, the adsorption capacity is excellent, the adsorption capacity on pollutants can be effectively enhanced, and the remediation effect is improved; the agent has an efficient repairing mechanism, the load capacity of the flora is enhanced through biological induction mineralization and physical adsorption enhancement of a bacterium-carrier complex, the release rate of the flora is controlled through an intelligent coating technology, and precise repairing is achieved.

The present application relates to the technical field of cooling liquid, and particularly relates to a cooling liquid composition, a preparation method and application thereof.The cooling liquid composition comprises a metal corrosion inhibitor; the metal corrosion inhibitor is 5-aminothiophene-2-formamide and / or 3-aminothiophene-2-formamide.The cooling liquid composition provided by the present application has excellent corrosion protection performance for copper, stainless steel, 3003 aluminum, 4043 aluminum and 6063 aluminum and the like, prevents the occurrence of cooling liquid leakage during the use of high-power liquid cooling charging equipment, and brings safety risks; the cooling liquid composition can be compatible with various non-metallic materials, prolongs the service life of parts, has good sediment dispersion performance, hard water resistance and stability, and ensures the good heat dissipation circulation and stable operation of equipment.

The application relates to the field of water treatment, in particular to a one-active-one-standby water treatment control system alternating use control method which comprises a first water treatment device for softening hard water and a second water treatment device for softening hard water and alternating with the first water treatment device. The first water treatment device and the second water treatment device of the application alternately produce water, form uninterrupted supply of softened water, one water treatment device produces water, and the other water treatment device is standby, can continuously supply softened water to a water area, and cannot appear the phenomenon that the water production is stopped during regeneration, is automatically controlled, and is convenient to use.

The utility model discloses integrated industrial circulating water ion removal equipment which comprises a shell, a first water inlet and a first water outlet are formed in the position, close to the bottom, of the end face of one side in the length extension direction of the shell, the first water inlet is connected with a water inlet pipe, and the water inlet pipe extends upwards in the shell and is connected with one end of a sterilization and algae removal groove; a second water outlet is formed in the other end of the sterilization and algae removal tank and connected with a water outlet pipe, a third water outlet of the water outlet pipe is formed in the position, close to the bottom, of one side of the adsorption cavity in the length direction, and a plurality of adsorption devices which are evenly distributed and can adsorb calcium and magnesium ions in water are arranged in the length direction of the adsorption cavity. An overflow port of an overflow pipe is formed in the other side of the adsorption cavity; the overflow pipe is connected with the first water outlet. By adopting the design scheme and the highly integrated design, the sterilization, algae removal and calcium and magnesium ion adsorption of the industrial hard water are simultaneously realized through one device, so that the industrial hard water is converted into soft water, and the soft water can be recycled.

The invention belongs to the technical field of oil for hydraulic supports, and particularly relates to biodegradable emulsified oil for a hydraulic support and a preparation method of the biodegradable emulsified oil. The biodegradable emulsified oil for the hydraulic support is prepared from the following raw materials in parts by mass: 40 to 50 parts of modified castor oil, 2 to 6 parts of eutectic solvent, 2 to 5 parts of emulsifier, 3 to 8 parts of antirust agent, 0.5 to 1.5 parts of defoaming agent and 15 to 30 parts of water, the biodegradable emulsified oil for the hydraulic support, provided by the invention, has good compatibility with 40-grade artificial hard water, and also has excellent anti-rust property and corrosion resistance.

The invention discloses flocculation softening hard water treatment equipment based on crystallization granulation and solid-liquid separation, and relates to the technical field of hard water softening, the flocculation softening hard water treatment equipment comprises a hard water treatment fluidized bed body, the lower side of the hard water treatment fluidized bed body is fixedly provided with a mounting base, one side of the mounting base is provided with a Venturi feeding pipe, and the other side of the mounting base is provided with a water inlet pipe; a second-stage mixing cavity is formed in the mounting base, a hollow rotating shaft is movably mounted in the second-stage mixing cavity, stirring fan blades are fixedly mounted on the lower side of the hollow rotating shaft in an array manner, and a sacrificial sleeve is movably mounted on one side of the second-stage mixing cavity. On the basis that the stirring fan blades are driven by water flow, the cleaning function of the sacrificial sleeve is achieved through the cleaning mechanism, the adverse effect caused by crystallization and scaling at the end of the Venturi feeding pipe is greatly reduced, the stability of the equipment in the using process is improved, and the service life of the equipment is prolonged. And the medicament and the water flow can be secondarily mixed in the secondary mixing cavity through the rotating stirring fan blades.

To provide a liquid hand dishwashing detergent composition which, while providing good foaming properties, viscosity, and stability, still has high biodegradability and a high concentration of renewable components.SOLUTION: The need for a liquid hand dishwashing composition which, while including a surfactant derived from a more renewable supply source, still provides good performance, in particular foam longevity in the presence of oily and fatty particulate soils and hard water, as well as oily and fatty soil removal, is met by formulating the liquid hand dishwashing composition with an alkylalkanolamide sulfate anionic surfactant in combination with an alkyl sulfate anionic surfactant.SELECTED DRAWING: None

The utility model relates to the technical field of softened water treatment, disclose a kind of softened water treatment device for induced crystallization granulation, the side end of water inlet pipe is fixedly connected with filter box, the bottom of filter box is fixedly connected with extension box, the inside of filter box is equipped with the filter assembly for filtering hard water impurities, the inside between the inside of filter box to extension box is equipped with water retaining component, the outside top of filter box is equipped with two groups of limiting component for limiting filter assembly and water retaining component, the utility model is provided with limiting component, filter assembly and water retaining component, hard water first after flowing to filter screen after passing through pass, to realize the filtration of impurities in hard water, it is convenient to filter and treat hard water, avoid the situation that the accumulation and deposition of impurities in water appear in the softened water operation, avoid the situation that impurities block pipeline appear in the conveying process of water flow, to avoid the normal progress of hard water softening operation.

The invention discloses an emulsifier composition with a low HLB (Hydrophile-Lipophile Balance) value suitable for various water qualities and application of the emulsifier composition, and belongs to the technical field of fine chemical engineering or the field of agriculture. The low-HLB-value emulsifier composition suitable for various water qualities consists of the following components in parts by weight: 50-90 parts of secondary alcohol polyoxyethylene ether; 20 to 50 parts by weight of pesticide emulsifier No. 500; 1-10 parts by weight of sulfonated sodium dioctyl succinate; and 20-40 parts by weight of fatty acid ester. The secondary alcohol polyoxyethylene ether is prepared from synthetic alcohol, and has the characteristics of low temperature resistance, no gel, less foam and low odor. After the emulsifier with extremely low HLB (Hydrophile-Lipophile Balance) value and adapting to various water qualities is mixed with oil ester with low HLB value, such as mineral oil and jojoba oil, the appearance is uniform, transparent and stable; when the oil agent is used in deionized water, standard hard water and three times hard water, the oil agent is uniformly dispersed in various kinds of water, and no floating oil appears on the surface.

The application discloses a water softener, comprising: a water softener valve, comprising a valve body with a valve cavity, the valve body is provided with a soft tank interface, the soft tank interface is provided with a side wall channel and a center channel which are both communicated with the valve cavity; a soft water tank which is installed outside the soft tank interface; a first water distributor which is installed inside the soft tank interface; a center pipe, the first end of which is communicated with the center channel, the second end of which is provided through the first water distributor to extend into the soft water tank; and a second water distributor which is provided at the second end of the center pipe; the soft water tank, the first water distributor, the center pipe and the second water distributor enclose a soft water cavity, the soft water cavity is filled with soft water medium, and the side wall channel is communicated with the soft water cavity through the first water distributor. The technical scheme of the application can improve the assembly efficiency of the water softener, and make the installation sealing of the first water distributor relatively reliable, so as to reduce the risk of escape of softening medium or intrusion of hard water.

The invention discloses a membrane-free electrochemical water treatment device and method based on scaling induction and equal-flux seepage, and belongs to the technical field of water treatment. The device comprises a reaction tank, an equal-flux porous seepage anode, a T-shaped array cathode, a plurality of water inlets, a plurality of water outlets and a power supply. The T-shaped array cathode induces scaling to form a porous isolation layer, the equal-flux seepage design of the anode is combined, efficient acid-base separation under the membrane-free condition is achieved, the problems of bottom acid liquid retention and backmixing are fundamentally solved, and the device has the advantages of being low in energy consumption, simple in structure, easy to maintain, low in cost and the like, and has wide application prospects. The softening agent is suitable for softening industrial hard water such as circulating cooling water.

The invention discloses a preparation method of a long-acting corrosion-resistant extreme pressure cutting fluid, and relates to the technical field of metal working fluids. According to the method, mineral oil is used as base oil and matched with fatty acid, boric acid ester and sulfonate to form a synergistic extreme pressure system, an aluminum product corrosion inhibitor and a polyol ester antirust agent are combined to form a dual-corrosion-resistant system, and functional auxiliaries such as a biological stabilizer and an anti-foaming agent are used as auxiliary agents. The preparation method comprises the steps of pretreatment, extreme pressure component compounding, anti-corrosion system adding, functional additive blending, emulsifying and curing, post-treatment and other optimization processes. Through collaborative design of components and optimization of technological parameters, the defects that existing domestic cutting fluid is short in anti-corrosion aging, insufficient in extreme pressure lubrication, weak in hard water resistance and the like are overcome, the product can form long-acting protection on sensitive metal, is suitable for counter weight load processing, is high in hard water resistance, is biologically stable, is environment-friendly and safe, and has a wide application prospect. And the high-end machining requirements in the fields of military industry, aerospace and the like are met, and practical value and popularization significance are achieved.

The present application relates to the field of microorganisms, and in particular to a strain of Vibrio gigas for removing calcium ions in high-salt hard water and its application. The strain is named Vibrio gigas DZWSW, and was preserved in the China General Microbiological Culture Collection Center on December 20, 2021, with the preservation number of CGMCC No. 24153. The Vibrio gigas DZWSW provided in the present application plays an important role in precipitating calcium ions in high-salt hard water, and has a broad application prospect in hard water softening. After the Vibrio gigas DZWSW provided in the present application precipitates calcium ions in high-salt hard water, carbonate mineral precipitates are formed, including calcite, single-water calcite and dolomite minerals; the formed mineral precipitates can be used in the field of building materials, and have a broad application prospect.

The application discloses a PTA biochemical discharge water recycling hardness removal process improvement method. The method replaces the traditional double-alkali hardness removal method with a weak-acid sodium bed process, can easily reduce the calcium and magnesium hardness to below 5 mg / L, and can directly serve as the water inlet of subsequent reverse osmosis without adding a scale inhibitor. In the application, the sodium bed process is introduced into the hardness removal process of water recycling, and a weak-acid cation exchange resin is used as an exchange carrier, so that the ion exchange capacity is greatly improved, the calcium and magnesium ions can be easily removed without adding additional alkali or sodium carbonate. Meanwhile, on one hand, the high flow rate of the cation exchange tank body is utilized to improve the treatment capacity and reduce the land occupation area; on the other hand, the weak-acid cation has high selectivity to hydrogen ions, the resin regeneration is complete, and the produced water quality is stable. The hardness-removed water obtained by the process can directly enter the reverse osmosis membrane filtration, no scale inhibitor needs to be added, and the recycling rate of PTA wastewater is greatly improved.

The invention provides an asymmetric polyamide membrane with a sponge phase three-dimensional structure as well as a preparation method and application of the asymmetric polyamide membrane. A polyamide selection layer of the separation membrane is in an asymmetric shape and comprises a compact surface layer for realizing salt interception and a sponge-phase three-dimensional bicontinuous sub-layer integrally connected with the compact surface layer; the three-dimensional bicontinuous sublayer is of a three-dimensional through bicontinuous sponge phase characteristic structure; the dense skin layer provides an effective salt ion barrier capability, thereby achieving high salt rejection performance. The membrane can be formed by introducing an amphiphilic structure-directing agent into an interfacial polymerization system to regulate and control the phase state and cure, wherein the structure-directing agent is a nonionic amphiphilic block copolymer. A cross-flow pressure filtration test shows that the polyamide membrane has a high rejection rate on various divalent inorganic salts, and shows relatively high water flux under the same test condition. The polyamide membrane with the three-dimensional structure can be applied to the fields of seawater desalination, hard water softening, sewage purification and the like.

The invention relates to the technical field of sewage separation devices, in particular to a boiler water supply filtering device which comprises a first support, a water storage tank is fixedly connected to the inner side of the first support, a second support is fixedly connected to the upper end of the water storage tank, and a discharging mechanism for hard water treatment is arranged at the lower end of the second support. A servo motor is installed at the upper end of the second support, a feeding pipe is fixedly connected to the inner side of the first support, a filtering mechanism used for filtering sewage is arranged at the upper end of the feeding pipe, centrifugal dispersion of sodium carbonate is achieved through cooperation of pushing of sodium carbonate through an auger rod and driving of a discharging pipe to rotate through a three-legged rod, and continuous stirring of a stirring rod is combined, so that the effect of filtering the sewage is achieved. Sodium carbonate and water are uniformly mixed, so that overhigh or insufficient local concentration is avoided, and the scaling reaction of alkaline impurities is accelerated.

The utility model relates to the technical field of accumulation chamber, disclose a kind of fireproof accumulation chamber for combustible, including accumulation chamber body, accumulation chamber body side is provided with roll-up door, and the both sides of accumulation chamber body top are uniformly provided with two air holes, and the both sides of accumulation chamber body are close to the top and are uniformly provided with toughened glass observation window, the bottom of accumulation chamber body inside is fixedly connected with two heat insulation plates in the middle of the side away from roll-up door.The utility model, it has realized the risk pattern of breaking the risk pattern of large-scale centralized accumulation of combustible at source, avoided single area fire to the whole spread, also reserved independent operation space for subsequent fire disposal, greatly reduced the possibility of fire expansion, when fire upgrade, with movable hard water pipe precision cover fire source area, avoid the problem of medium waste, uneven covering in traditional fire extinguishing mode, significantly improve fire efficiency, fully guarantee the safety and reliability in the process of combustible storage.

A collector for reverse flotation, and a preparation method therefor and the use thereof. The collector for reverse flotation has a chemical structural formula as shown below: R1-NH-R2-NH2, wherein in the formula, R1 and / or R2 comprise(s) at least one of the following functional groups: a -CN3H4 functional group and a -SO3H functional group. The method comprises: S1, providing a diamine compound; and S2, introducing a -CN3 4 functional group and / or a -SO3H functional group into the diamine compound, so as to obtain a collector for reverse flotation. A diamine group and -CN3H4 in the collector for reverse flotation can enhance the interaction with a hydroxyl group, silicon, oxygen and other groups on the surface of an aluminosilicate mineral, thereby improving the selectivity of the collector for reverse flotation; -SO3H can reduce the interaction with metal ions in hard water, thereby improving the hard water resistance and enhancing the adaptability of the collector to hard water; moreover, a hydrocarbyl non-polar macromolecular chain in R1 and / or R2 enhances the hydrophobicity of the surface of mineral particles after the action of the collector, and therefore the collector for reverse flotation has an improved collecting capacity, and also has selectivity for and adaptability to minerals.

To provide a water treatment device efficiently eliminating metal ions from hard water without using an ion exchange resin.SOLUTION: A water treatment device 1 eliminates metal ions from water to be treated to generate treatment water. The water treatment device includes an electrolysis tank 10 including an anode chamber 15 provided with an anode 12, a cathode chamber 16 provided with a cathode 13 and a film 14 partitioning the anode chamber from the cathode chamber and permeating ions, and generating acidic water and alkaline water from the water to be treated by electrolysis. The water treatment device further includes a control part 100 controlling voltage or current between the anode and the cathode. The acidic water flows in the anode chamber, and the alkaline water flows in the cathode chamber. The control part controls the flow rate of the acidic water in the anode chamber and the flow rate of the alkaline water in the cathode chamber so as to satisfy a formula (1).SELECTED DRAWING: Figure 1

The invention discloses a raised dust treatment device for constructional engineering, and relates to the technical field of dust falling treatment of constructional engineering, the raised dust treatment device for constructional engineering comprises a cart, the outer wall of the top of the cart is fixedly connected with a device shell, and the outer wall of the device shell is fixedly connected with a control counter. According to the raised dust treatment device for constructional engineering, when the device is started, a motor is started to drive a transmission shaft to rotate, the transmission shaft drives a pinion to rotate, the pinion is meshed with a large gear so as to drive the large gear to rotate, the large gear drives a hard water pipe to rotate, and the hard water pipe drives a water storage disc to rotate; the water storage disc drives the threaded plate to rotate, so that the extrusion rod rotates on the wave ring, the threaded plate slides up and down, the annular spraying pipe rotates and swings by extruding the connecting rod, and the problems that the spraying angle of the atomizing nozzle is limited, and the nozzle with the angle unadjustable can only spray in the fixed direction are solved.

This invention relates to a paraquat granule and its preparation method, belonging to the field of pesticide technology. The granule consists of paraquat salt, a layered double hydroxide carrier, a disintegrant, microcrystalline cellulose, an outer coating of an emetic / odorant / tracking agent, and the remainder being water-soluble filler. The granule wear rate is ≤2%, it completely disintegrates within 60 seconds in standard hard water at 25℃, and the suspension rate is ≥90%. Preparation employs a one-step process of screw extrusion-centrifugal granulation-vacuum belt drying or fluidized bed granulation, resulting in high content retention. The product is dust-free and non-caking, suitable for drone-based aerial spraying and long-distance sea transport, facilitating large-scale application in overseas registered areas.

This invention relates to the field of metal recycling technology and discloses a method for recycling titanium scrap, comprising: a mechanical pretreatment stage for crushing and primary magnetic separation of titanium scrap; a cleaning and rinsing stage employing a four-step cleaning process combining ultrasonic waves and spraying with a synergistic chelating agent-biosurfactant-buffer system; water softening pretreatment for hard water environments using a sacrificial-functional double-layer chelating system and a ternary buffer system; a dehydration and drying stage for removing moisture; and a sorting and purification stage using multi-stage magnetic separation and various physical sorting methods to obtain high-purity titanium scrap products. This invention achieves the simultaneous execution of three functions: chelating agent complexation of metal ions, surfactant emulsification of oil contamination, and buffer stabilization of the reaction environment. The cleaning efficiency is 3-5 times higher than that of a single cleaning method, solving the problems of competitive consumption of chelating agents and poor cleaning process stability in hard water environments, thus realizing high-quality recycling of titanium scrap.

To provide a dishwasher and an operation management system capable of solving the problem that water stains and water spots are easily left on dishes since the water quality of city water to be used is different and the aggregation and re-adhesion of dirt are promoted by a hardness component such as magnesium in an area where the hardness of water is high.SOLUTION: A control unit that controls a washing process, a rinsing process, and a drying process according to control conditions, an address information acquisition unit that acquires address information capable of specifying an installation area, a communication unit that can transmit the address information to an external server, a control information acquisition unit, and a measurement unit that measures a remaining amount of liquid detergent used in the washing process, wherein the control unit acquires control information of a first control condition when the water quality of the water supply source is soft water and acquires control information of a second control condition when the water quality of the water supply source is hard water, when the remaining amount of the liquid detergent is equal to or more than a reference value, the control unit starts the operation according to either the first control condition or the second control condition.SELECTED DRAWING: Figure 6

The invention discloses a method and a device for recovering calcium in high-hardness water based on aluminum salt hydrolysis and dissolution, and the method is characterized in that the hydrolysis of the aluminum salt is advanced before the crystallization reaction of calcium carbonate, amorphous aluminum hydroxide generated by the hydrolysis is used as a seed crystal, and the seed crystal induced crystallization of the high-hardness water is carried out, so that the conventional homogeneous phase crystallization is inhibited; therefore, the problem of low calcium recovery rate caused by poor settling performance of a calcium carbonate crystallization product in a homogeneous crystallization process is solved; in order to realize cyclic utilization of the aluminum salt and improve the purity of the crystallization product, the amorphous aluminum hydroxide in the crystallization product is dissolved out in the form of metaaluminate by using the amphoteric characteristics of the amorphous aluminum hydroxide and is recycled as the aluminum salt after pH regulation. The method solves the problem of low recovery rate caused by poor settling performance of the crystallization product during recovery of the high-hardness water calcium carbonate crystallization calcium, realizes cyclic utilization of the aluminum salt, and improves the purity of the crystallization product.

The utility model relates to the technical field of reclaimed water softening, in particular to a hardness-removing and softening treatment device for a reclaimed water system, which comprises a box body, a blow-off pipe is arranged on one side of the bottom end of the box body, an overflow port is arranged on one side of the top end of the box body, and a liquid adding component for material injection is mounted on the inner side of the box body. The liquid adding assembly comprises a mixing pipe fixed to the inner wall of the box body, the two sides of the mixing pipe are connected with a chemical adding pipe and a liquid inlet pipe, a mixing mechanism is installed in the mixing pipe, sliding positioning pieces are arranged on the two sides of the top end of the box body, and a plurality of spoilers arranged in a staggered mode are installed on the two sliding positioning pieces. According to the lime milk and sewage mixing device disclosed by the utility model, lime milk and sewage can be mixed in the mixing pipe through the mixing mechanism, so that the whole softening process time can be effectively shortened.