47results about "Water softening" patented technology

Methods, systems and devices for removing iodide from an aqueous solution including submerging an iodophilic electrode in an aqueous solution containing iodide, applying a current to the electrode, and electrochemically oxidizing the iodide to iodine within the electrode. The electrode may include an iodophilic material and an electrically conductive material. It may also include a binder. The iodophilic material may be a starch, chitosan, carboxycellulose, cationic polymer, or an anion exchange membrane material, for example. After oxidizing the iodide to iodine within the electrode, the electrode may be submerged in a second solution and a current may be applied to reduce the iodine and release it from the electrode in the form of iodide into the second solution.

The utility model provides a vehicle-mounted water heater with constant temperature bin, including cold water inlet, heat exchanger, combustor, gas inlet, exhaust fan, hot water outlet and constant temperature bin, the cold water inlet is used for introducing outside cold water into the vehicle-mounted water heater, the heat exchanger is used for heating the cold water, the combustor is connected with heat exchanger, the gas inlet is connected with combustor and is used for inputting gas, the exhaust fan is used for discharging the waste gas generated after combustion, the hot water outlet is arranged at the water outlet end of heat exchanger, the constant temperature bin is arranged between heat exchanger and hot water outlet and is used for buffering and mixing the hot water after heating, the utility model discloses a constant temperature bin, and adopts double space separation structure inside, the hot water after heating needs first entering the space far from the water outlet end and then entering the water outlet area through the water hole, effectively changes the water flow path, makes the water fully mix, restrains temperature transient, makes the water outlet temperature more constant, and improves the use comfort.

The application belongs to the technical field of comprehensive management of saline-alkali land and circular agriculture, and particularly relates to a multi-stage circular agriculture system and method for saline-alkali land based on multi-stage resource utilization of saline-alkali water, which comprises the following steps: through the technical chain of terrace land reclamation, seawater-like regulation, reverse osmosis desalination, planting and breeding coupling and tail water circulation, efficient cyclic utilization of natural resources in the saline-alkali area is realized. The method mainly comprises the following steps: after the saline-alkali water in the saline-alkali area is detected, the saline-alkali water is extracted for seawater-like regulation, the regulated saline-alkali water is obtained, and then the saline-alkali water is desalinated through a reverse osmosis system, and fresh water and seawater-like water are obtained, which are used for crop planting and aquatic product breeding, respectively, and the breeding tail water is recycled after solid-liquid separation. The system and method have the advantages that the system does not need external supply of fresh water, is self-contained, achieves win-win of ecological benefit, social benefit and economic benefit, realizes green and sustainable development, and has universal popularization value for comprehensive development and utilization of saline-alkali land.

The application discloses an energy-saving water quality treatment equipment and belongs to the field of water quality treatment equipment. The energy-saving water quality treatment equipment comprises a water quality treatment cylinder, a wastewater stirring assembly is arranged at the top of the water quality treatment cylinder, a wastewater treatment assembly is arranged in the wastewater stirring assembly, and a wastewater filtering assembly is arranged at the right side of the water quality treatment cylinder. The water quality softening and flocculation process are combined to improve the treatment efficiency. The direct guide groove directly sprays flocculants into water bodies, improves the mixing effect of the flocculants and the water bodies, so that the flocculation effect is better and the reaction is more sufficient. The upper stirring rod and the lower stirring rod of the upper layer respectively stir the water bodies. The upper stirring rod of the upper layer accelerates the flocculation process, and the lower stirring rod of the lower layer has a lower rotating speed, promotes the collision and agglomeration of particles in the water bodies, and helps the sedimentation formation, and will not damage the formed flocculation bodies and hardness sediment particles, thereby improving the sedimentation rate.

Methods, systems and devices for removing iodide from an aqueous solution including submerging an iodophilic electrode in an aqueous solution containing iodide, applying a current to the electrode, and electrochemically oxidizing the iodide to iodine within the electrode. The electrode may include an iodophilic material and an electrically conductive material. It may also include a binder. The iodophilic material may be a starch, chitosan, carboxycellulose, cationic polymer, or an anion exchange membrane material, for example. After oxidizing the iodide to iodine within the electrode, the electrode may be submerged in a second solution and a current may be applied to reduce the iodine and release it from the electrode in the form of iodide into the second solution.

In one example, a system for collecting scale from water in a water heating appliance includes a reservoir having an interior, an inlet through which the water flows into the interior, and an outlet through which the water flows from the interior, the inlet, the outlet, and the interior defining a water pathway. A filter is positioned within the interior of the reservoir and the filter is oriented to traverse the water pathway and divide the interior of the reservoir into an upstream section into which the water flows from the inlet and a downstream section from which the water flows to the outlet. A collection chamber is configured to receive scale as the water flows along the water pathway through the interior of the reservoir and the water passes through the filter. The collection chamber is positioned in or adjacent the upstream section of the interior of the reservoir.

The application relates to the technical field of wastewater treatment, in particular to an automatic dosing control device for industrial wastewater treatment, which comprises a tank body, a tank cover, a motor, a dosing pipe, a pH meter, a filter plate, an agitation assembly and an adjusting assembly; the motor and the dosing pipe are arranged on the tank cover; the pH meter is arranged in the tank body; when the pH meter detects the pH value change of wastewater, the dosing pipe is controlled to add reagents; the filter plate is arranged in the tank body; the agitation assembly penetrates through the filter plate and is connected with the dosing pipe. The agitation assembly and the adjusting assembly can filter the precipitates formed in the wastewater softening process in a pressure filtration mode, and the filter plate is reset after the filtration is completed; air is used to extrude from the top of the filter plate during the resetting process, so that part of the precipitates adhered to the bottom of the filter plate are removed, and the continuous and stable operation of the desulfurization wastewater zero discharge process is ensured.

The application provides a water quality hardening removal process for stabilizing pelletized polymerization reaction, comprising: obtaining wastewater to be treated, wherein the wastewater to be treated contains calcium and magnesium ions; adjusting the pH value of the wastewater to be treated to a preset alkaline range and adjusting the water temperature to a preset temperature range; conveying the adjusted wastewater to the bottom inlet of a fluidized bed reactor, wherein the fluidized bed reactor is filled with porous carriers, and the surface and internal pores of the porous carriers are loaded with active components; adding polymerization reagents into the fluidized bed reactor, and controlling the upward flow rate in the fluidized bed reactor within a preset flow rate range, while controlling the aeration intensity within a preset intensity range, so that the porous carriers are in a fluidized state; performing solid-liquid separation on the mixture output from the fluidized bed reactor, obtaining supernatant as treated effluent, and discharging the pelletized solid product.

This invention provides a wastewater softening system and method based on calcium sulfate crystallization technology, relating to the field of wastewater softening technology. It includes a mixing tank and an induced crystallization reactor. The mixing tank has a first containment cavity and is equipped with a seed inlet, a first water inlet, a first seed return inlet, and a first seed outlet connected to the first containment cavity. The first containment cavity is used to mix seed crystals and water to form a seed crystal mixture. The induced crystallization reactor has a second containment cavity and is equipped with a second water inlet, a second seed return inlet, and a second seed outlet connected to the second containment cavity. The second containment cavity is used to contain the seed crystal mixture and wastewater for induced crystallization. The second water inlet is suitable for connection to a wastewater source. Both the second water inlet and the second seed return inlet are located above the second seed outlet in the vertical direction, and the second seed return inlet is connected to the first seed outlet. This invention is applicable to the softening treatment of high-calcium and high-sulfate wastewater, with high process efficiency and low softening cost.

This invention proposes a three-dimensional electrode electrochemical device with descaling function. It is divided into a softening chamber and an oxidation chamber by a partition. The softening chamber contains multiple cylindrical electrode groups. Under the action of an external electric field, the cathode reaction generates a strongly alkaline environment to precipitate scale-forming ions in the water. A gas flushing mechanism and an external programmable DC regulated power supply effectively achieve automatic descaling. The three-dimensional electrode group in the oxidation chamber consists of several anode plates and cathode plates arranged alternately at equal intervals. Insulating baskets filled with particle packing are placed between adjacent electrode plates. Ultrasonic vibrating plates are integrated around the three-dimensional electrode group. A porous sieve plate and aeration pipeline are installed at the bottom of the three-dimensional electrode group. A spray mechanism with rotating nozzles is installed at the top of the oxidation chamber. The combination of the three-dimensional electrode group, ultrasonic assistance, and circulating spray enhances the oxidation efficiency. This invention removes multiple pollutants from water simultaneously and efficiently in a single reactor without the need for external reagents, through a series of electrochemical reactions. It has the advantages of high treatment efficiency, high automation, and small footprint.

This invention discloses a zero-discharge wastewater treatment system, relating to the field of wastewater treatment technology. The wastewater treatment system includes a wastewater inlet and a reclaimed water outlet. A mixing tank has a first reclaimed water inlet and a demineralized water inlet, which are connected. A circulating thickener has a second reclaimed water inlet, a first concentrated brine inlet, a first hard water removal inlet, and a circulating water outlet, which are connected. A low-temperature multi-effect distillation unit has a circulating water inlet and a concentrated brine outlet, which are connected. The concentrated brine outlet is connected to the first concentrated brine inlet. A hard water softening system has a second concentrated brine inlet and a hard water removal outlet, which are connected. The hard water removal outlet is connected to the first hard water removal inlet. A nanofiltration system has a second hard water removal inlet and a hard water removal outlet. This application has the beneficial effects of zero wastewater discharge, resource recycling, and environmental friendliness.

A system for wastewater treatment comprises a membrane filtration device which receives the stream of pre-treated wastewater from the pre-treatment unit and generates a reject stream which is supplied to an electrochemical oxidation reactor which generates a reactor effluent stream which is divided into a recirculated wastewater stream that is recycled back to the equalization tank and a reactor discharge stream that is discarded from the system. The target fraction ratio between the volume of the recirculated wastewater stream and the volume of the reactor discharge stream is controlled based on the target total dissolved solids amount in the wastewater to be treated, on the amount of regulated organic substances in the wastewater which are treated by the electrochemical oxidation reactor to increase the efficiency of the electrochemical oxidation reactor to a target value and on the composition of the wastewater being discharged from the system.

To provide a water treatment system that enables more efficient water treatment while also achieving a more compact design. [Solution] A water treatment device 1 for removing calcium components contained in water to be treated comprises a main body 2 for storing the water to be treated, a cylindrical body 3 arranged vertically inside the main body 2 and having an opening 30 at its lower end, a stirring device 4 arranged inside the cylindrical body 3 for stirring the water to be treated inside the cylindrical body 3, a chemical supply device 6 for supplying a chemical agent into the cylindrical body 3 that reacts with and insolubilizes the calcium components contained in the water to be treated, and a flocculation aid supply device 7 for supplying a flocculation aid that causes the calcium insolubilized material generated in the water to be treated to flocculate and precipitate, wherein the flocculation aid supply device 7 supplies the flocculation aid downstream of the stirring device 4.

The application relates to a calcium-magnesium desulfurization wastewater softening pretreatment device and method, and belongs to the technical field of wastewater pretreatment, which comprises a base, a mixing barrel is fixedly installed on the upper surface of the base, a fixed body is fixedly installed at the upper end of the mixing barrel, a fixed column body is arranged in the mixing barrel, a rotating barrel is arranged in the fixed column body, a fixed inclined frame is fixedly installed on the inner wall of the rotating barrel, a moving mechanism is arranged in the fixed inclined frame, a pushing device is arranged in the moving mechanism, the pushing device comprises an arc-shaped pushing block, a connecting plate is rotatably installed on the upper surface of the arc-shaped pushing block, and a rotating rod is rotatably connected to the end, away from the arc-shaped pushing block, of the connecting plate; through the combined use of the power output device, the magnet and the fixed column body, the pH chemical sensor can be switched through rotation and magnetic force, so that each pH chemical sensor corresponds to each detection position, and the detection precision is ensured.

The application discloses a photovoltaic wastewater resource treatment process and relates to the technical field of photovoltaic wastewater treatment. The process comprises the following steps: adding photovoltaic wastewater into a primary stirring crystallization pool to generate a mixed solution with a first rising flow rate, so that the mixed solution is separated into calcium fluoride crystals and primary treatment water containing calcium fluoride crystal nuclei; introducing the primary treatment water and a sodium carbonate precipitant into a crystallization fluidized bed to form calcium carbonate crystals and calcium carbonate nuclei by inducing the calcium fluoride crystal nuclei, and promoting the reaction solution to form a second rising flow rate, so that the reaction solution is separated into the calcium carbonate crystals and secondary treatment water containing the calcium carbonate nuclei; the calcium carbonate nuclei are arranged to flow into the crystallization fluidized bed; and the secondary treatment water is sequentially subjected to pH adjustment, nitrogen removal treatment, carbon removal treatment and filtration treatment to obtain fourth treatment water. The resource treatment process can separate crystalline bodies with different particle sizes, thereby improving the crystallization efficiency in fluorine removal treatment and hardness removal treatment.

The utility model discloses a wastewater pretreatment device for fine chemical industry relates to chemical industry wastewater treatment technical field, including wastewater treatment cylinder, the one side top of wastewater treatment cylinder is connected with wastewater adding pipe, the one side top of wastewater treatment cylinder is connected with detergent adding pipe, the one side bottom of wastewater treatment cylinder is connected with control transmission pipe, the one side surface of control transmission pipe is provided with control valve, the one side bottom of control transmission pipe is connected with collecting pipe. Through setting up wastewater adding pipe and adding the wastewater that needs to handle to the inside of wastewater treatment cylinder, simultaneously utilizes the cleaning liquid adding mixing operation of detergent adding pipe, realizes stirring mixing in the inside of wastewater treatment cylinder, after mixing one end time, directly controls the opening operation of control transmission pipe through control valve, and waste liquid and flocculate can directly enter the inside of prestorage cylinder through collecting pipe, and the filtering operation of flocculate is realized through flocculate filter screen.

The application discloses a shale gas exploitation wastewater resource utilization system and method based on quality separation treatment and cascade concentration, and the system comprises a front-end pretreatment unit, a primary salt separation unit, a concentrated water special treatment unit, an electrodialysis unit, an evaporation crystallization unit and a deep purification unit. The front-end pretreatment unit removes suspended solids, oil substances, fouling ions and refractory organic matters through homogeneous adjustment, coagulation air flotation, electrolytic alkali adjustment, chemical hardness removal and ozone catalytic oxidation. The primary salt separation unit outputs primary fresh water and first-stage concentrated water. The first-stage concentrated water is subjected to secondary softening, ultrafiltration and acid adjustment, and then enters the electrodialysis unit, so that the first-stage concentrated water is further concentrated to obtain third-stage concentrated water and electrodialysis fresh water. The third-stage concentrated water is subjected to evaporation crystallization to generate qualified solid salt and distillation condensed water. The three-way fresh water is combined, subjected to RO desalination and resin denitrification, and qualified recycled water is output. The application can solve the problems of easy pollution and blockage, high energy consumption and poor quality of crystallized salt in the traditional process, and realizes stable operation of the system, reduction of treatment cost and resource utilization of water and salt.

This invention provides a fluidized bed catalytic softening system with online seed activity regeneration, belonging to the field of mine water treatment. It addresses the problem of seed activity gradually declining over time, requiring frequent replenishment of fresh seeds. The system includes a fluidized bed crystallization softening tower, an inlet module, a pH adjustment module, a grain classification bed, and a seed activity regeneration module. The fluidized bed crystallization softening tower has an inlet and a seed outlet at the bottom, and a softened water outlet and a seed replenishment port at the top. The inlet module includes an inlet pipe and a cyclone feeder. The grain classification bed is located inside the fluidized bed crystallization softening tower for seed size classification. The seed activity regeneration module monitors the surface activity of the seeds in real time and performs multi-frequency synergistic cleaning. This system achieves online recovery of seed surface activity, instantaneous uniform mixing of inlet water and reagents, and automatic grain classification and circulation, extending seed lifespan and improving system operational stability.

The present application belongs to the technical field of waste liquid treatment, and particularly relates to a graphite purification waste liquid treatment method and a treatment system. The present application introduces a pre-acid pickling system to utilize waste acid twice, reduces the amount of acid used in the acid pickling process of graphite purification, improves the use efficiency of acid liquid, thereby reducing the cost of the graphite purification process and significantly enhancing the overall economy. The present application also introduces a sodium fluorosilicate production line, effectively realizing the resource utilization of residual fluorosilicic acid and fluorosilicate in waste water. Not only can the operation cost of reagents in the subsequent water treatment process be effectively reduced, but also the produced sodium fluorosilicate can be sold to improve economic benefits. An evaporation crystallization system is used to crystallize and recover valuable salts in waste water. The obtained crystalline salt can be further used as a raw material for other products. The treatment system provided by the present application can realize the resource utilization and recycling of waste acid and waste water, and achieve zero emission.

The application provides a seed collecting device and a treatment system for sewage softening treatment, and relates to the technical field of sewage softening treatment. The seed collecting device comprises a stock bin, a first screw conveyor and a second screw conveyor. The stock bin has a containing cavity and is provided with a water inlet communicating with the containing cavity. The containing cavity is used for containing a mixed solution formed by particles and sewage, wherein the particles comprise seeds. The first screw conveyor is connected with the stock bin and is provided with a first particle outlet. The first screw conveyor comprises a feeding section. The feeding section is arranged in the containing cavity and is provided with a liquid inlet. The liquid inlet is located below the plane of the liquid level of the mixed solution in the up-down direction, so that the mixed solution can enter the feeding section for conveying. The second screw conveyor is arranged outside the stock bin and communicates with the first particle outlet. The second screw conveyor and the first screw conveyor are both provided with a water outlet. The application can realize solid-liquid separation and transportation of seeds, and ensure the recovery efficiency of the seeds.

The application discloses a system for removing hardness and organic matters in reverse osmosis concentrated brine from industrial waste gas, comprising a direct filtration membrane, wherein an input end of the direct filtration membrane is connected with waste water, and an output end of the direct filtration membrane is sequentially connected with a reverse osmosis membrane, a buffer adjusting tank, a reaction device, a mixing device, an inorganic membrane and a subsequent treatment unit; the system further comprises a shift condensate stripping unit, a low-temperature methanol washing unit and a power plant dust removal unit; the shift condensate stripping unit is sequentially connected with an ammonia-containing tail gas storage tank and the buffer adjusting tank; the low-temperature methanol washing unit is sequentially connected with a CO2-containing tail gas storage tank and the reaction device; and the power plant dust removal unit is sequentially connected with a porous solid waste material storage tank and the reaction device. The application further discloses a method for removing hardness and organic matters in reverse osmosis concentrated brine by using the system. The method utilizes industrial waste gas NH3 and CO2 and industrial solid waste materials, realizes the reuse of waste, and realizes the efficient removal of hardness and organic matters in reverse osmosis concentrated brine.

The utility model discloses a circulating cooling water purification treatment system, including the purification tank of square structure, the water inlet pipe of aluminum alloy casting mould connection and the water outlet pipe of cooling tank connection are fixedly installed to the purification tank side, the filter cartridge is arranged in the inside middle position of purification tank, and the mounting frame of disc -like structure is fixedly installed to the filter cartridge upper and lower two ends, the backflushing shower head and the delivery pump are fixedly installed in the purification tank inboard, and the backflushing shower head is close to the filter cartridge outer surface, and the delivery pump is communicated with backflushing shower head through the connecting hose. This circulating cooling water purification treatment system adopts novel structure design, and the cooling water used in aluminum alloy casting mould enters the purification tank through the water inlet pipe, utilizes the filter cartridge in the purification tank and carries out the filtration to the impurity (such as the scale of falling off etc.) therein, and the filtered cooling water enters the cooling tank through the water outlet pipe, and after cooling, again flows into the casting mould and circulates and uses.

A method of treating mining effluents containing at least one of nitrogen or cyanide species, the method comprising injecting ozone in the mining effluent in successive treatments performed at different pH. Also, a method of treating mining effluents with bromide and ozone. Also, a method of treating mining effluents containing cyanates with ozone at a relatively low pH.

The embodiment of the present application provides a water treatment device, a thermostatic valve assembly, a water path, a water-using device and a water heater. The water treatment device comprises a shell, a sterilization assembly and a scale inhibition assembly. The shell comprises a first water inlet and a second water inlet. The first water inlet and the second water inlet are communicated with each other through a flow channel formed in the shell. The sterilization assembly comprises a sterilization lamp which is inserted into the shell. The scale inhibition assembly comprises an electronic anode which is inserted into the shell. The electronic anode and the sterilization lamp are arranged simultaneously, so that the water flowing through the shell can be sterilized and descaled simultaneously. The water quality is improved and the water safety of the user is improved.