123 results about "Soft water" patented technology

The invention discloses a high-pressure soft water medium treatment and supply system, which belongs to the technical field of seawater desalination treatment, and comprises a multi-dimensional ion detection module for detecting the concentration distribution characteristics of target inhibition ions in original seawater to generate a corresponding coating material selection instruction; the electric field dynamic coupling module captures a termination signal according to the coating material selection instruction; the shock wave generation module starts a main pump to generate fluid shock waves to execute sediment breaking action according to the termination signal; the monitoring module is used for monitoring the finally output softened water ion concentration and reversely calculating the pollution index of the coating surface; and the heat cycle feedback device is used for starting a self-cleaning mode according to the pollution index and transmitting waste heat in the cleaning process to the pump set. The electric field dynamic coupling adsorption and fluid shock wave cooperative treatment technology is adopted, high-efficiency ion capture, dynamic sediment removal and waste heat recycling can be achieved, energy consumption is remarkably reduced, and continuous and stable operation of the system is guaranteed.

The utility model provides a purified water dispenser which comprises a water softening system, a water purifying system and a hot water system, the water purifying system comprises a filtering system, a soft water quality detection piece, a soft water temperature detection piece and a variable-frequency booster pump, and the soft water quality detection piece and the soft water temperature detection piece are both connected with the variable-frequency booster pump. The rotating speed of the variable-frequency booster pump is determined according to the total amount and temperature of dissolved solids in soft water measured by the soft water quality detection part and the soft water temperature detection part, and the stability of the water making flow speed of the purified water dispenser is guaranteed.

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 provides an efficient softening and hardness-removing process for a high-hardness water body, which is applied to the technical field of water body purification. The efficient softening and hardness-removing process comprises a pretreatment mechanism, a softening reaction mechanism, a flocculent precipitation mechanism and a sludge closed-loop treatment mechanism which are sequentially connected along a water body treatment flow direction, the efficient softening and hardness-removing process for the high-hardness water body comprises the following raw water treatment steps: S1, treating raw water by virtue of the pretreatment mechanism, so as to obtain ultrafiltration effluent; and S2, the ultrafiltration effluent enters the softening reaction mechanism, and under the control of the electric cabinet control mechanism, chemicals are added for softening and flocculation reaction. The total hardness removal rate can reach more than 90% through accurate addition of the medicament, two-stage pH control and optimization of reaction conditions, which is far superior to that of a traditional resin ion exchange method, the influence of high-hardness water discharge on receiving water is reduced, ecological and health problems caused by excessive hardness of the water are avoided, and the harsh requirements of industrial production and environmental protection on soft water are met.

The purification water dispenser comprises a water softening system, a water purification system and a hot water system, the water softening system is communicated with a raw water inlet of the purification water dispenser, the water purification system comprises a reverse osmosis filter element and a booster pump, and a water inlet of the reverse osmosis filter element is communicated with a first soft water outlet channel of the water softening system; the booster pump is arranged between a first soft water outlet channel of the water softening system and a water inlet of the reverse osmosis filter element, a water inlet of the hot water system is communicated with a water outlet of the reverse osmosis filter element, and the hot water system is used for providing hot water softened by the water softening system and purified by the water purification system for a user. According to the technical scheme, raw water can be softened through the water softening system, and the concentration of calcium and magnesium ions in water entering the reverse osmosis filter element is reduced, so that the service life of the reverse osmosis filter element is prolonged.

According to the multifunctional test method for simulating the erosion and erosion of the side slope, the wave making module is used for simulating waves with different energies, frequencies and amplitudes so as to test the requirements of different waves for simulating the erosion effect of the side slope; the influence of wave erosion on side slopes composed of different components is simulated by arranging a replaceable panel for simulating side slopes with different hardness or side slopes with different soil properties, the rebound energy of shore collision waves is reduced by arranging a wave dissipation module so as to avoid energy dissipation of simulated waves, and the wave dissipation module comprises an inverted triangular water retaining table provided with a soft water absorption piece. The buffer table is extremely small in gradient; various experiments such as scouring and erosion experiments at different angles, scouring and erosion experiments of waves with different energy and scouring and erosion experiments of slopes with different rock and mineral component structure types can be realized on one device, the device is simplified, energy is saved, and the experimental device has good application prospects in the aspects of environmental protection, geological disaster protection and the like. And the method has scientific research and engineering practical significance to a certain degree.

The purification water dispenser comprises a water softening system, a water purification system and a hot water system, the water softening system is communicated with a raw water inlet of the purification water dispenser, the water purification system comprises a reverse osmosis filter element and a booster pump, and a water inlet of the reverse osmosis filter element is communicated with a first soft water outlet channel of the water softening system; the booster pump is arranged between a first soft water outlet channel of the water softening system and a water inlet of the reverse osmosis filter element, the hot water system comprises a hot tank assembly and a hot tank water replenishing valve communicated with the hot tank assembly, and the hot tank water replenishing valve is communicated with a water outlet of the reverse osmosis filter element; the hot tank assembly is used for providing hot water softened by the water softening system and purified by the water purifying system for a user. According to the technical scheme, raw water can be softened through the water softening system, and the concentration of calcium and magnesium ions in water entering the reverse osmosis filter element is reduced, so that the service life of the reverse osmosis filter element is prolonged.

The utility model relates to the technical field of soft water preparation, particularly provides a water mixing device and water softening equipment with the water mixing device, and aims to solve the problems that in the prior art, a water softening machine is too complicated in structure, high in cost and the like due to a water mixing mode that a raw water branch is additionally arranged. In order to achieve the purpose, a first connector of a water mixing device is communicated with an external raw water source and an inlet of a water softening device, a second connector is communicated with an outlet of the water softening device, the first end of a water mixing channel in the water mixing device is communicated with the first connector, the second end of the water mixing channel is communicated with the second connector, and a water mixing valve is arranged on the water mixing channel. The water mixing valve is arranged to be capable of opening or blocking the water mixing channel. According to the water mixing device, the water mixing channel is formed in the water mixing device, the water mixing valve is arranged on the water mixing channel, no pipeline needs to be additionally arranged, the hardness of softened water flowing out of the water mixing device can be adjusted as required only by adjusting the opening degree of the water mixing valve, the equipment structure is simplified, and the cost is reduced.

The utility model relates to the technical field of water treatment, in particular to a soft water treatment device which comprises a filter, a water inlet pipe, a water outlet pipe, a water inlet pipe and a water outlet pipe, the first water outlet valve is arranged at the position, close to the water outlet, of the water outlet pipe and used for controlling the water outlet to be opened or closed; the ion concentration detector is arranged on the water outlet pipe and is used for monitoring the ion concentration of the soft water discharged into the water outlet pipe from the filter; a water return opening is formed in the water outlet pipe between the water outlet and the ion concentration detector; one end of the water return pipe is communicated with the water return port, the other end of the water return pipe is communicated with the filter, and the water return pipe is used for discharging soft water with substandard ion concentration into the filter to be softened again; the water return valve is arranged at the position, close to the water return opening, of the water return pipe and used for controlling the water return opening to be opened or closed. The problem that the ion concentration of soft water discharged from the water outlet cannot meet the standard requirement is solved.

The invention relates to the technical field of tunnel engineering, and discloses a complex mountainous area tunnel fracture zone weak surrounding rock collapse processing method, which comprises the following steps: carrying out geological forecast through a geophysical prospecting and drilling combined mode to identify the development conditions of geology and underground water in front of a tunnel construction direction; weep holes are formed in arch feet of the left side and the right side of the tunnel face in the construction direction, and gate valves are installed at hole openings of the weep holes; the soft water-rich rock mass in the front is consolidated through an advanced pre-reinforcement grouting technology; a three-step core soil reserving method is adopted for excavation, an upper pilot tunnel is excavated in the circumferential direction, concrete is initially sprayed immediately after excavation, a steel frame is arranged, and then anchors, sprayers and nets are constructed; repeating the pre-reinforcement grouting technology and the excavation step of the three-step core soil reserving method until passing through the collapse section; according to the treatment method, risks caused by collapse, initial support deformation arch replacement and the like and time consumed for treatment are prevented, risks caused by collapse and later initial support deformation limit invading arch replacement are prevented, the construction progress is accelerated, and the cost is reduced.

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.

According to an existing water spraying and dust suppression mode, a water storage vehicle needs to be transferred to a water fetching point, the time for reciprocating the stacking process is long, spraying cannot be carried out in time, operation is complex, the spraying position is not accurate, it cannot be guaranteed that the water storage vehicle is accurately aligned to the position above the water fetching point, water resources are prone to being wasted, and the cost is low. Meanwhile, the working efficiency is not high. Through the arrangement of a water suction pump, an inclined spraying head and a straight spraying head, in the using process, a connecting rod fixes a conveying water pipe, one end of a water hose is connected to the conveying water pipe, water in a pool is filtered through a filtering water suction head, water pumped by the water suction pump flows into the conveying water pipe through the water hose, and a camera monitors a water pumping point and adjusts the position of the water pumping point; the inclined spray head and the straight spray head are arranged at the position of the water outlet, and meanwhile, the angle of the rotating seat is rotated, so that the spray range can be expanded, and the dust suppression efficiency of the storage yard is improved.

The utility model discloses a bypass valve filter core subassembly that can adjust water mixing ratio, including filter core body, with the fixed bypass valve body of filter core body connection, filter core body can filter the calcium, magnesium ion in drinking water, get the second filtration water, and the bypass valve body can adjust the mixing ratio of drinking water and second filtration water, and filter core connecting seat is connected with the bypass valve connecting seat, and the upper end of drinking water inlet joint is fastened with the bypass valve water pipe, and the second soft water outlet channel is communicated with the bypass valve outlet channel, and the bypass valve outlet channel is communicated with the bypass valve outlet pipe again, the utility model discloses filter core body can filter the calcium, magnesium ion in drinking water, get the second filtration water, and the bypass valve body can freely adjust the mixing ratio of drinking water and second filtration water, and the water of different softness is provided for the user to select.

The embodiment of the invention 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, a faucet 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 faucet is communicated with a water outlet of the water purification 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 utility model discloses a salt box control mechanism and a soft water heater, and the salt box control mechanism comprises a salt box which contains soft water salt; one end of the water injection pipe is connected with water to be treated through a water inlet pipe, the other end of the water injection pipe extends into the salt tank, and a stop valve is arranged on the water injection pipe; the salt valve is arranged in the salt box, the salt valve is connected with a salt suction pipe to output saturated salt water, and a valve is arranged on the salt suction pipe; a salt cavity with a large inner diameter and a pipe cavity with a small inner diameter are formed in the salt valve, one end of the salt cavity is communicated with the salt suction pipe, the other end of the salt cavity is communicated with the pipe cavity, and the pipe cavity is arranged on one side of the salt cavity and extends downwards to abut against the inner bottom wall of the salt box. According to the salt box, saturated salt water in the salt box can be absorbed in an unpowered mode to form a dry type salt box, the salt climbing phenomenon is avoided, the water injection amount can be flexibly adjusted according to requirements, the amount of the formed saturated salt water can meet the requirement for regeneration of soft water resin, and waste is avoided.

A system and method for reclaiming and treating groundwater collected from an underground level of a structure or building site to supply non-potable water to an end use system, such as an irrigation system, a pond, an equipment washing system, a cooling system, or a heating system. Groundwater seeps into such underground levels and has to be pumped out to prevent flooding the structure. Normally, this groundwater is discharged as a waste stream but can be treated for non-potable use using an three-stage treatment system comprising an ultrafiltration system, a water softener system, and a reverse osmosis system. The water softener system may be used or bypassed depending on acceptable TDS levels in the end use system and the TDS level of the reclaimed groundwater. Use of the system and method can save millions of gallons of groundwater per year per building site from being wasted.

The present invention discloses a thermal system for sludge incineration, belonging to the technical field of sludge incineration, and relating to the optimization and transformation of the thermal system and stable production. The system includes a deaerator, a condensate tank and a steam header, and further includes a water seal device. A water seal chamber is provided in the water seal device. The water seal chamber is communicated with the steam exhaust pipe of the deaerator, and the water seal chamber is further connected with a steam vent pipe and a make-up water pipe. A regulating valve is provided on the steam vent pipe. The water seal device further includes a soft water tank. Soft water is filled into the water seal chamber through the make-up water pipe, and the soft water in the water seal chamber is communicated with the soft water in the soft water tank through a balance pipeline, so as to greatly increase the stability of the system, so that the continuous production capacity is greatly improved, and the purpose of increasing production and efficiency is achieved.

The utility model embodiment provides a kind of heat recovery system of coal gasification black water, comprising: soft water heat exchanger, first soft water water supply pipe, first flash tank and first circulating water pump;Soft water heat exchanger is arranged on the output pipeline of coal gasification black water, and soft water heat exchanger, first soft water water supply pipe, first flash tank and first circulating water pump form soft water circulation closed loop.Wherein, the soft water in soft water heat exchanger exchanges heat with the coal gasification black water flowing, enters first flash tank and is flashed, and the saturated steam that meets the requirement of industrial production obtained by flashing is transported to steam pipe network, and the soft water that is not gasified by flashing is transported to first circulating water pump after soft water replenishment, and is transported back to soft water heat exchanger to continue heat exchange.By using soft water to absorb part of the high efficiency heat in the coal gasification black water flowing, and by forming soft water circulation closed loop, the heat energy of coal gasification black water is continuously recycled, so that high-value industrial production steam is continuously produced.

The utility model discloses a hot soft water backflow circulating device which comprises a hard water pool, a soft water pool and a hot soft water pool, a backflow groove is formed in the top of the hot soft water pool, the inner groove edge of the backflow groove is connected with the top edge of the hot soft water pool through an inclined face, and a drainage channel is arranged between the hard water pool and the hot soft water pool. One end of the drainage channel is connected with the reflux tank, the other end of the drainage channel is connected with the hard water tank, and the drainage channel is inclined from the hot soft water tank to one side of the hard water tank; according to the utility model, water flow which cannot be accommodated in the hot soft water pool is guided back into the hard water pool through the backflow groove, so that the problem of overflow of hot soft water in the hot soft water pool is solved, and the potential safety hazard is reduced; meanwhile, the size of a backflow hole of the backflow groove can be adjusted according to the overflow amount, and the backflow efficiency is improved.

The utility model discloses a soft water purifying and heating single-waterway system, and relates to the technical field of soft water purifying equipment, the soft water purifying and heating single-waterway system comprises a water softening system, a first-stage filter element, a second-stage filter element and a hot water system which are sequentially connected in series, the first-stage filter element is used for primarily filtering soft water flowing into the first-stage filter element from the water softening system to obtain first filtered water, and the second-stage filter element is used for filtering second filtered water; the first filtered water can flow into the second-stage filter element, the second-stage filter element conducts second-stage filtration on the first filtered water, dissolved salt, organic matter, microorganisms and the like in the water are deeply filtered out, first pure water is obtained, the first pure water can flow into the hot water system, the hot water system heats the first pure water to obtain hot water, and therefore the hot water can be supplied to users. The soft clean heat single water path system can ensure that dissolved salts and the like in water are removed before heating, so that no scale is generated during heating, the heating efficiency and the service life of the hot water system are not influenced, and meanwhile, the pure water outlet valve is communicated with the downstream of the secondary filter element, so that the pure water can be directly drunk by a user.

The application provides a full-automatic soft water preparation method, comprising the following steps: providing three piston units, the piston units being located in cavities; a plurality of sealing plugs are arranged on the piston units, and two adjacent sealing plugs are used for water path separation; the piston units are driven to move by a driving structure, and the positions of the piston units include a running position, a forward washing position, a water injection position and a regeneration position; a plurality of water inlet holes and water outlet holes are arranged on the cavities, and the water inlet holes and the water outlet holes are communicated with the water paths separated by the sealing plugs; and step S4: the water paths communicated by the water inlet holes on different piston units and the water outlet holes corresponding to the water inlet holes are used to respectively realize soft water preparation, forward washing, water injection and regeneration. The application adopts a partition structure, uses a plurality of plungers to move in a plurality of cavities to realize water path switching in running and regeneration modes, reduces the requirements for manufacturing precision and motion control precision, reduces the failure rate and improves the operation reliability.

The present disclosure provides a kind of pure soft water route system.The pure soft water route system includes controller, soft water device, water purification device and salt making device;The waste water outlet of water purification device is communicated with the first water inlet of salt making device by first pipeline;The salt suction port of soft water device is communicated with salt making device by salt suction pipe;The water inlet of soft water device and the water inlet of water purification device are used to access raw water;Water purification device is used to purify raw water to obtain treated waste water, and waste water flows into salt making device to form salt solution via first pipeline;Controller is used to drive soft water device to suck salt solution from salt making device via salt suction pipe in soft water regeneration mode, to soften raw water to generate soft water, and to flow out via soft water outlet.The present disclosure realizes the reuse of waste water while meeting the daily use demand of soft water, pure water, cleaning water and flushing water of user, and saves water resources.

The invention discloses a fused salt energy storage / release system for simulating deep peak regulation of a thermal power plant and a control method, and the system can operate in dual modes: in a peak electricity period, hot fused salt releases heat through a heat exchange loop, a working medium is heated through three-stage cascade heat exchange to generate high-grade steam to push a turbine to generate power, and the peak electricity demand is responded; in the off-peak electricity period, the low-temperature fused salt absorbs redundant steam heat of the thermal power generating unit to be stored, and energy loss is reduced. The system comprises three core loops, wherein a water loop forms a closed loop through two-stage preheating, vaporization and overheating, and a soft water supply and safety valve is matched to guarantee cleanliness and safety; the fused salt loop takes double storage tanks and a multi-stage heat exchanger as a core, fused salt solidification is prevented by means of the design of a heat tracing band, pipeline gradient and the like, and safety is guaranteed through interlocking conditions; the steam loop simulates waste heat input, a closed loop is achieved through vaporization, overheating, heat exchange and condensation, and the water supplementing device is linked to prevent dry burning. According to the invention, simulation, safety and regulation and control accuracy can be considered at the same time.

The utility model discloses a salt bracket which comprises a body, the body is installed at the position, close to a filter material tank, in a water softener, and an inner hole used for installing a liquid level controller and a storage groove used for storing regenerated salt particles are formed in the body. An arc-shaped surface matched with the filter material tank in appearance is arranged on the side surface of one side, facing the filter material tank, of the body. According to the salt bracket disclosed by the utility model, due to the arrangement of the inner hole, the storage groove and the arc-shaped surface on the body, the salt bracket and the filter material tank can be effectively placed in a machine salt box to form limitation and constraint of each degree of freedom.

A water softening device (1) comprises: a housing (3) having an internal space; an inflow port (2) through which a treatment target water flows into the internal space; a water treatment layer (4) that removes hardness components from the treatment target water and generates a weakly acidic soft water; and an outflow port (5) through which the weakly acidic soft water flows out from the internal space. The water treatment layer (4) comprises: a first soft water layer (4a) that removes the hardness components from the treatment target water; a neutralization layer (4b) that is provided downstream of the first soft water layer (4a) and neutralizes the treatment target water; a second soft water layer (4c) that is provided downstream of the neutralization layer (4b) and removes the hardness components from the treatment target water; and an acidification layer (4d) that is provided downstream of the second soft water layer (4c), acidifies the treatment target water, and removes the hardness components from the treatment target water.

The invention provides a supporting structure for a tunnel to pass through a soft water-rich stratum and a construction method of the supporting structure, belongs to the technical field of tunnel engineering supporting and lining, and solves the problems that in the prior art, the supporting rigidity is insufficient, a waterproof blind area exists, and cooperative stress is poor. According to the forepoling system, the outer-layer and inner-layer horizontal jet grouting piles and the large pipe shed are combined to form a closed reinforcing and waterproof curtain; the composite lining system sequentially comprises a primary support, a waterproof layer and a secondary lining layer from outside to inside. The connection collaborative structure takes a pipe shed end part supporting sleeve arch as a core to realize integrated connection and collaborative stress of an advance support and a lining system; the construction method comprises the steps of double-layer jet grouting pile construction, large pipe shed insertion and grouting, tunnel excavation, composite lining construction and whole-process monitoring. The method is suitable for tunnel construction of various soft water-rich stratums, tunnel construction safety and structural stability are remarkably improved, and remarkable safety benefits, economic benefits and social benefits are achieved.

The utility model discloses oxidation potential water treatment equipment which comprises an equipment shell, an injection assembly is fixedly installed at the top end of one side of the equipment shell, a spraying assembly is installed at the top end of the inner wall of the equipment shell, lifting grooves are formed in the middles of the two sides of the inner wall of the equipment shell, and a filtering assembly is installed between the two lifting grooves. A positive electrode plate is fixedly installed on one side of the bottom end of the inner wall of the equipment shell, a negative electrode plate is fixedly installed on the other side of the bottom end of the inner wall of the equipment shell, an installation base is fixedly installed in the middle of the bottom end of the inner wall of the equipment shell, and an exchange membrane is fixedly installed in the installation base. By arranging the filtering assembly and the injection assembly, the quantitative plate slides relative to the quantitative shell to adjust the volume of soft water in the quantitative shell, then impurities in the soft water are intercepted and purified through the filtering plate, a traditional soft water injection mode is replaced, and the soft water oxidation cost is reduced.

The application discloses a construction method for rapid and safe shield tunneling based on lacustrine deposit soft water-rich stratum, which comprises the following steps: 1, reinforcing the shield end; 2, tunneling by the shield machine; 3, removing the first layer of concrete structure; 4, removing the second layer of concrete structure; 5, removing the third layer of concrete structure; 6, grouting of the first grouting hole; 7, grouting of the second grouting hole; and 8, tunneling by the shield machine. In the application, the top of the second layer of concrete structure is removed first, so that the second layer of concrete structure is deformed, damaged, split and cracked during the tunneling by the shield machine, the speed of removal is greatly accelerated, the construction efficiency is improved, and the receiving time of the shield machine is shortened. The grouting hole assembly is grouted from the ground to the tunnel, water channels behind the segments are timely filled, the problems of slow grouting speed and small grouting range in the tunnel are solved, the purpose of rapid tunneling is achieved, and the effect of rapid water stopping at the tunnel portal is achieved.

The present disclosure relates a water softening devices, and provides a method for adjusting hardness of outflow water from a water softening device, including: determining, in response to a hardness adjustment request for the outflow water, target hardness of outflow water corresponding to the hardness adjustment request for the outflow water; determining a water mixing ratio of soft water to raw water based on the target hardness of outflow water; and adjusting an opening degree of a water mixing unit of the water softening device based on the water mixing ratio, where the water mixing unit is configured to control the mixing of raw water and soft water in the water softening device.

The invention discloses a ship cylinder sleeve water waste heat recovery system and method. A ship main engine provides cylinder sleeve water in a heat source module mode. The first plate heat exchanger and the second plate heat exchanger are located behind the marine main engine and sequentially connected in series to form two-stage heat exchange, the marine main engine and the first plate heat exchanger are connected through a cylinder sleeve water pipe system for heat exchange, and the first plate heat exchanger and the second plate heat exchanger are connected through a seawater pipe system for heat exchange. A water hose system is further arranged on the second plate heat exchanger; the water hose system is located at the rear-stage branch of the passage of the second plate heat exchanger and comprises double branches which are connected in parallel, and the double branches comprise a heavy cargo hold direct supply branch and an air conditioner regulation and control branch; the expansion water tank is communicated with the water hose system to implement pressurization; according to the system, waste heat of ship main engine cylinder sleeve water is recycled through two-stage heat exchange, dual-application branch energy utilization of a fishing boat heavy cargo hold and a cabin air conditioner is achieved, energy conservation and emission reduction are achieved, and the system is small in space requirement, low in cost and suitable for being popularized in small and medium-sized fishing boats.