41results about How to "Stable water production" patented technology

The invention discloses a roll-type reverse-osmosis membrane element with a variable-thickness channel net, formed by overlapping and winding a pure-water diversion net, a reverse-osmosis membrane and an inlet diversion net on a center water-producing pipe. The inlet diversion net and the pure-water diversion net are respectively postioned in an inlet channel formed by the inner surface of the folded reverse-osmosis membrane and a water-producing channel formed by adjacent outer surfaces. The roll-type reverse-osmosis membrane element with the variable-thickness channel net is characterized in that the thickness of the inlet diversion net is gradually reduced along the flowing direction of raw water in the inlet channel. After improvement, when the inlet flow rate and the inlet flow value have constant lengths, the thickness of the inlet channel net is reduced, and the inlet flow rate can increase so that the flow rate of water on the membrane surface is increased, therefore, the invention lessens the concentration difference polarization phenomena of the membrane surface at the water concentrating end of the membrane element, stabilizes the desalting rate and the water-generating amount, decreases the pollution rate of the membrane element and prolongs the service life of the reverse-osmosis membrane.

The invention relates to a powdered activated carbon reflux/ultrafiltration combined technology for a water treatment plant. The technology is characterized in that powdered activated carbon are fed into an ultrafiltration membrane tank, and the powdered activated carbon which are kept in the ultrafiltration membrane tank for a proper time are refluxed to a pre-treatment coagulation period at a proper reflux ratio through utilizing a reflux pump, wherein the addition amount of the powdered activated carbon is 5-20mg/L, the reflux ratio is 1%-5% of a system flow, and the retention time of the powdered activated carbon is 2-24 hours. The organic pollutant content of raw water is reduced through fully utilizing the adsorptive capability of the powdered activated carbon in a mixed liquid of the technology, powdered activated carbon particles serve as flocculation cores so as to enhance coagulation, and a treatment effect of a coagulation period is improved; and moreover, the operation stability of a system is improved, and the water production rate is increased. The technology can be widely applied to an ultrafiltration combined technology for the water treatment plant.

The invention discloses water treatment equipment. The water treatment equipment comprises a control system, a raw water box, four parallel-connected raw water pumps, three parallel-connected heat exchangers, a flocculating agent feeder, three parallel-connected pan filters, three parallel-connected ultra-filtration devices, an ultra-filtration water box, four parallel-connected RO (Reverse Osmosis) booster pumps, a reducing agent feeder, a scale inhibitor feeder, three parallel-connected safety filters, four parallel-connected primary high-pressure pumps, three groups of parallel-connected primary reverse osmosis devices, a primary RO water box, a sodium hydroxide feeder, four parallel-connected secondary high-pressure pumps, three groups of parallel-connected secondary reverse osmosis devices; a secondary RO water box, two parallel-connected EDI (Electronic Data Interchange) water supply pumps, a sterilizer, a precision filter, an EDI device, a nitrogen-sealed water box, two parallel-connected pure water pumps, a TOC (Total Organic Carbon) remover, a polishing mixed bed and a terminal filter, which are connected in series in sequence. The water treatment equipment has the advantages that the heat exchangers in the water treatment equipment are used when a temperature is lower, and the use of the heat exchangers is stopped when the temperature of the weather rises. The running efficiency of the water treatment equipment is improved.

The invention discloses a seawater desalting plant for a solar coupled heat pump. The seawater desalting plant comprises a compressor, a throttling valve, a condenser, a solar heat collector, a heat collection circulating pump, a seawater-water heat exchanger, a heat collection valve, a seawater tank, a first seawater circulating pump, a first three-way adjusting valve, a concentrated seawater discharging valve, a concentrated seawater discharging pump, a seawater sprayer, a falling-film evaporator, a concentrated seawater collector, a second three-way adjusting valve, a fresh water discharging valve, a fresh water collector, a fin heat exchanger, a centrifugal fan, a second seawater circulating pump and a fin type evaporator. According to the seawater desalting plant for the solar coupled heat pump, disclosed by the invention, humidification and enthalpy increase for air are increased by using the falling-film evaporator; desalting treatment for wet air is realized by using cold seawater and a heat pump evaporator, and latent heat of condensation is recovered; meanwhile, the utilization rate of energy is improved, the operability of the device is widened, the consumption of the energy is reduced, and the water yield under unit electricity consumption is increased.

The invention discloses an under-shaft drilling water treatment device which can be used for purifying slime water produced in under-shaft working, solid-liquid separation of slime water is realized, the clean water is recycled and reused in a drilling machine, and the slime is dehydrated and transported out. By utilizing the device, the on-site treatment and recycling of drilling slime water is realized, the water conveying quantity to the shaft from the ground is greatly reduced, the problem that environment pollution is caused by the slime water produced by the under-shaft drilling machine is thoroughly solved, and the full-automatic operation of the system is realized, so that the working intensity of works is greatly reduced.

A membrane separator with multiple membrane modules has at least two membrane modules. Each membrane module has the liquid inlet pipe connected to blowoff pipe and air supply pipe, the liquid outlet pipe connected with chemical cleaning reflux pipe, liquid supply pipe and back washing pipe, the circulating reflux pipe, and air releasing pipe. The connecting pipes are used for parallel connection between membrane modules. The working steps of said separator include working state, the first and the second washing state, blowoff state and final washing state of the first membrane module, continuous working state, and repeating said steps for other membrane modules sequentially.

The invention relates to an ultrafiltration method, in particular to an immersed ultrafiltration method, and further relates to a device for implementing the method and a preparation system of pure water adopting the device. The immersed ultrafiltration method comprises the following steps of: arranging an immersed ultrafiltration film in an ultrafiltration pond; sucking with a sucking pump arranged outside the ultrafiltration pond to form a negative pressure; and making water outside the immersed ultrafiltration film enter a film cavity of the immersed ultrafiltration film for performing ultrafiltration treatment. The immersed ultrafiltration device comprises the ultrafiltration pond, the immersed ultrafiltration film and the sucking pump. The preparation system of pure water comprises the immersed ultrafiltration device. According to the invention, the problem that the film is difficult to clean in the conventional process for preparing pure water with a pressure type ultrafiltration film is mainly solved.

The invention provides a hotel softened water and direct drinking water processing system. The system comprises a multi-medium filter, an active carbon filter, a softening filter and a reverse osmosis device. The multi-medium filter carries out primary filtration of tap water and removes various suspensions, colloids, particles and impurities in tap water. The active carbon filter carries out secondary filtration of the water generated by the multi-medium filter and absorbs organic matters to lower COD and residual chlorine. The softening filter carries out softening processing of the water generated by the active carbon filter to lower the tap water hardness. The reverse osmosis device carries out deep processing of the water generated by the softening filter, and removes suspensions, particles, impurities and colloids in the source water further, and then the generated water is employed as pipe direct drinking water. The provided water processing system can change tap water into qualified direct drinking water and achieves tap water purifying and softening purposes. The tap water hardness is lowered effectively, the device is simple to maintain, water generation is stable, performances are reliable, and the processing system can be widely used in the hotel industry.

The invention relates to a preparation method of a forward osmosis emergency drinking water bag prepared based on a layer-by-layer self-assembly method, wherein the drinking water bag is prepared by sealing two forward osmosis membranes, the water bag formed by the forward osmosis membranes is filled with an absorbing liquid, the forward osmosis membrane is prepared by using a layer-by-layer self-assembly method, the outer side of the water bag is a forward osmosis membrane active layer, and the inner side of the water bag is a support layer, and inwards contacts the absorbing liquid. According to the present invention, the drinking water meeting the drinking standard is prepared only by using the driving force provided by the transmembrane osmotic pressure difference, such that the methodis energy-saving and economic, the water production is stable on the premise of the effective interception of organic pollutants and heavy metal ions, and the water flux can achieve 1.7-3.5 L/(m<2>.h); and the method provides the safe and good-taste drinking water solution for terminal users in lack of material rescue and clean water sources in emergency situations such as natural disasters, accidental dangerous situations, field survival and the like, and can provide purified water meeting the national Standards For Drinking Water Quality (GB5749-2006).

The invention relates to the technical field of membranes and particularly relates to a hollow fiber desalination membrane assembly and equipment. The hollow fiber desalination membrane assembly comprises a pressure container and a desalination membrane unit arranged in the pressure container, wherein a raw water inlet and a concentrated water outlet are arranged in the pressure container; the desalination membrane unit comprises a membrane shell and a desalination membrane assembly arranged in the membrane shell; the desalination membrane assembly comprises a central water-producing pipe, a central water inlet pipe arranged around the peripheral side of the central water-producing pipe, a plurality of desalination membrane filaments arranged at the peripheral side of the central water inlet pipe, a water inlet end fixing layer and a water-producing end fixing layer; the water inlet end fixing layer and the water-producing end fixing layer are used for being fixed at two ends of the desalination membrane filaments respectively. The hollow fiber desalination membrane assembly and equipment disclosed by the invention has relatively high anti-pollution capacity and relatively long service life, is low in replacement cost, stable in water yield and excellent in water quality, can work in a relatively bad water quality condition and is suitable for pretreatment of a large reverse osmosis desalination system.

The invention discloses a nuclear power EDI electrolytic desalting device. The device comprises a system water inlet valve (1), a prefilter (3) and a precision filter (6). The precision filter (6) is connected to a concentrated water manual regulation stop valve (10) and a fresh water side electric door (11), and both the concentrated water manual regulation stop valve (10) and the fresh water side electric door (11) are connected to an EDI electrolytic desalting module (15). The EDI electrolytic desalting module (15) is respectively connected to a water production side check valve (16) and a concentrated water side check valve (17). The nuclear power EDI electrolytic desalting device provided by the invention has the advantages of reasonable structure design, convenient operation, automatic operation, automatic switching, up-to-standard water quality, stable water production, high recovery rate and stable operation, and can ensure an effluent water conductivity of less than 0.1us/cm. The device has the characteristics of no leakage unless abnormal situation, small occupation area, system integration, easy installation and convenient maintenance.

A water making method and a water making device are disclosed. The water making device is provided with a heat exchanger and a condenser, wherein the heat exchanger heats sea water through cooling water cooling an internal combustion engine, reduces the pressure of the sea water to be lower than the atmospheric pressure and generates water vapor; the condenser cools the vapor generated by the heat exchanger to generate distilled water; the condenser comprises a bypass channel connecting the upstream side and the downstream side of the heat exchanger; and the cooling water in the downstream side of the heat exchanger is returned to the cooling water in the upstream side through the bypass channel.

The invention discloses a non-powered drinking water purification equipment and purification process. The purification equipment comprises: a raw water tank, a water purifier and a water production tank connected in series in sequence; the raw water tank is located above the water purifier and the water production tank; the upper part of the raw water tank is arranged There is a raw water pipe for water inlet, and a raw water outlet pipe is provided at the lower part of the raw water tank; the raw water outlet pipe is connected to the water inlet of the water purifier, and the water outlet of the water purifier is connected to the water purifier outlet pipe; the water purifier outlet pipe is connected to the upper part of the produced water tank The water inlet and the outlet pipe at the lower part of the produced water tank are drinking water outlets; the purification process is carried out in the following stages: raw water collection stage; filtration purification stage; water storage stage. The beneficial effects of the present invention are: saving cost; under the same pressure, the water production of each hollow fiber microfiltration membrane is increased by 200%-300% compared with the prior art, realizing stable water production under gravity; pollution-resistant and convenient for transportation; It is widely used for water supply in mountainous areas or rural areas without tap water supply, places where natural disasters occur, and emergency water supply for field operations.

The invention relates to a steel and iron industrial thick brine treatment device and method, and belongs to the technical field of environment protection. The device sequentially comprises a thick brine reverse osmosis system, a nanofiltration system, a reverse osmosis seawater desalination system, a nanofiltration thick water pool and a fresh water pool, wherein the thick brine reverse osmosis system is connected with the nanofiltration system; the nanofiltration system is connected with the seawater desalination system; the reverse osmosis seawater desalination system is connected with thefresh water pool. According to the features of water, water treatment technologies such as chemical treatment, reverse osmosis membranes and nanofiltration membranes are organically combined and integrated into the thick brine treatment method; the device and the method mainly aim at the treatment and reuse of thick brine and concentrated brine; the water production stability is ensured; the energy is also saved.

The invention discloses a water taking system for a shallow water river in a water-depleted mountainous area. The system involves an overflow weir, a water taking chamber and a radiation well, whereina spillway grid is arranged at an inlet of the water taking chamber, a floating mushroom head automatic water taking device and an on-line turbidity meter are arranged in the water taking chamber, and a submersible pump is arranged in the radiation well. When flooding does not occur, the overflow weir lifts the water level of the shallow water river, river water flows into the water taking chamber through the spillway grid, and then enters a water conveying pipe from the floating mushroom head automatic water taking device to flow to the radiation well, and finally, the submersible pump conveys the river water to a subsequent water purifying structure; a drought period relies on joint recharge of the above mentioned surface water recharge mode and the seepage of the radiation well; when the on-line turbidity meter in the water taking chamber during a flood period is displayed higher than 5 NTU, the on-line turbidity meter feeds back a signal to a self-control system, an electric butterfly valve mounted on the water conveying pipe is closed, and the radiation well supplies water through the self-seepage; according to the water taking system, the water supply amount of the shallow water river in the water-depleted mountainous area can be ensured, the water quality is reliable, the service life of the water taking system is prolonged, and the water taking cost is reduced.

The invention provides a deep decolorization treatment system and method for soy-sauce flavor liquor brewing wastewater, and belongs to the technical field of sewage treatment. The method comprises the following steps of collecting water produced by front end biochemical treatment through a water collecting tank, and balancing the treatment flow of an advanced oxidation system; removing residual chroma and CODCr and like pollutants in wastewater through an advanced oxidation unit; performing alkali precipitation on pollutants in water through an alkali precipitation unit, flocculating sludge and organic pollutants in the water, and separating solid impurities from liquid through a membrane unit in the alkali precipitation unit; performing electrocatalytic oxidation treatment reaction on the clear liquid after membrane separation through an electrocatalytic oxidation unit, thereby guaranteeing that the produced water reaches the standard. The treatment system provided by the invention can effectively remove residual CODCr and color developing particles in the soy-sauce flavor liquor brewing wastewater without producing the concentrated solution, the operation cost is low, and the secondary pollution cannot be generated.

The invention relates to a water purifier with a ceramic film. The water purifier with the ceramic film comprises a shell consisting of an end cap and a barrel body, a water inlet is formed in the endcap, and a water producing opening is formed in the lower end of the barrel body; a ceramic film filter element which is modified by natural polymer is arranged in the shell; and a modified ceramic film has the characteristics of narrow aperture, uniform distribution, high separation efficiency and the like. The water purifier is convenient to disassemble, the filter element can be taken out fromthe shell and then is cleaned and regenerated, stability of water production amount of the water purifier is ensured, and the service life is long.