629 results about "Water reclamation" patented technology

A system for on-wing engine washing and water reclamation is provided. The system has at least one spray device for introducing a cleaning liquid containing at least water into the engine while the engine is being operated, and an effluent trough for collecting the cleaning liquid from an exit end or underneath side of the engine. In a preferred embodiment, a source of the cleaning liquid and the effluent trough are located on a mobile unit. Further, a treatment system for treating the collected cleaning liquid is also located on a mobile unit.

A waterless power generator, particularly a waterless electrical power generator and a passively controlled process for producing electricity with a fuel cell using stoichiometric amounts of a solid hydrogen fuel and byproduct water vapor produced by the fuel cell to generate hydrogen gas. A fuel cell reaction of hydrogen and oxygen produces electrical energy as well as by-product water which diffuses back into the power generator as water vapor to react with the hydrogen fuel, producing more hydrogen gas. This generated hydrogen gas is then used as a fuel which allows the fuel cell to generate additional electrical power and additional water. The process runs without any attached water source or water supply other than the water which is produced by the fuel cells themselves.

A cyclonic power wash system uses high pressure, high temperature water for selectively cleaning large, flat, concrete or asphalt surfaces. The sprayed water is reclaimed by vacuuming it through holes in the bottom of a reclamation ring attached to the underside of the mobile cyclone sprayer, filtering the vacuumed water and returning it to a storage tank for re-use by the system. The filtration tank initially filters out large matter in an inlet trough and smaller matter in a plurality of cascading chambers. A rotary union in the sprayer prevents the water, passing from the inlet of the rotary union to the discharge thereof, from leaking through or around a seal formed by pressing together a pair of hard, durable sealing surfaces, for example, silicon carbide, one of which is non-rotatably slidingly received in an upper recess of the union's fixed housing and the other, affixed to a spindle rotatably received and retained in a lower recess of the housing. The sliding fit interface of the non-rotatable seal face in the upper recessed housing is sealed by an o-ring supported at its inner bore by extended portions adjacent the central bores of the members between which it is sandwiched. Upward and rotational forces are applied to the spindle in reaction to the water exiting from nozzles affixed to a spray bar attached to the spindle.

A system and method for treating and removing hydrocarbon and other contaminants in bilge and ballast water, utilizing a multiple progressive process that chemically and electrically treats-and removes contaminants. Wastewater, received by a sump, is transmitted to a holding tank and treated, over a period of time while-influent wastewater continues off loading. The wastewater is pumped to an oil/water separator tank that decants free-floating oil from the wastewater to an oil retention tank. The wastewater then undergoes an electrocoagulation process where emulsions are broken and compounds that further aid treatment are created. The treated water flows to a retention/separation tank where contaminant particles coalesce and separate. Water is decanted and transferred to a clean water holding tank through an ozone injection system and an activated carbon filter. Treated water is recirculated until it exits the system meeting discharge limits for organics and metals allowing release into the environment.

The invention provides a desulfurization waste water zero-discharging treatment technology for coal-fired power plants. The desulfurization waste water zero-discharging treatment technology comprises a pretreatment system, a membrane process distillation system, a fresh water reuse and purification system, a concentrate water recovery and evaporative crystallization system and a sludge treatment system. The pretreatment system comprises the processes of pH adjustment, first-stage precipitation, coagulation and second-stage precipitation. Waste water treated by the pretreatment system enters the membrane process distillation system, and discharged sludge enters a sludge treatment system. One side of a membrane assembly in the membrane process distillation system is the cooling side and is in a negative pressure state. The waste water evaporates on the membrane surface and passes through the cooling side of the membrane surface in the form of vapor, and then the vapor coagulates into fresh water and enters the fresh water reuse and purification system, so that fresh water is reused by power plants and other relevant water-consuming systems. The other side of the membrane assembly is the heating side, and waste water not passing through the membrane surface forms concentrate water and enters the concentrate water recovery and evaporative crystallization system, so that resource utilization of concentrate water is achieved. Thus, desulfurization waste water zero discharging is realized.

The invention provides a treatment method of wastewater with high salt content, comprising the following steps of: reducing the hardness and the permanent hardness of carbonate in the wastewater with high salt content, keeping the hardness of the carbonate in the wastewater with high salt content below 150mg/l and the permanent hardness below 300mg/l; adjusting the pH value of the wastewater with high salt content to be below 8.5; filtering precipitate in the wastewater with high salt content; exchanging the permanent hardness of the wastewater with high salt content by using a sodium ion exchanger; exchanging the hardness of the carbonate in the wastewater with high salt content by using a weak acid ion exchanger; removing carbon dioxide in the wastewater and keeping the index of the carbon dioxide in the wastewater with high salt content below 5mg/l; adjusting the pH value of the wastewater with high salt content to be below 8.5 again; and filtering the wastewater with high salt content by using a reverse osmosis device. The invention also provides a treatment device of wastewater with high salt content. The invention provides a treatment method of the wastewater with high salt content and a treatment device thereof, which can greatly improve the water recovery rate and save water for production and the consumption of common salt for generating the sodium ion exchanger.

The invention discloses a water reclamation plant raw water quality online early warning system and a control method thereof. The water quality online automatic monitoring system is used for acquiring a water reclamation plant raw water sample, testing six items of water quality indexes including pH, COD, TN, NH3-N, TP and SS in an online manner, and regularly transmitting water quality online monitoring data to a data center according to a promissory acquisition period of time; the data center is used for controlling the water quality online automatic monitoring system and storing the water quality online monitoring data; and a main control computer is used for automatically reading the water quality online monitoring data and providing early warning for abnormally undulated water quality indexes according to the pollution degree. The system and the method disclosed by the invention can accurately and quickly detect the abnormally undulated water quality indexes of the water reclamation plant raw water quality, and provides early warning and emergency processing for the water quality undulation degree, can lower the cost of water treatment on the premise of ensuring the treated water quality, achieves the monitoring and real-time early warning forecast of the water reclamation plant raw water quality, and reduces loss.

A water reclamation system includes a drainage lane overlaying a downward graded area of land and configured to receive water run-off from the land. At least one collection ditch coupled to the at least one drainage lane is configured to receive water from the drainage lane. At least one collection pipe housed is within and extends outwardly from the at least one collection ditch. A first container is coupled to the at least one collection pipe and configured to receive water from the at least one collection pipe. Housed within the first container is at least one water purifying filter and a pump configured to evacuate at least a portion of water within the container to a destination. A second container is in communication with the first container and is configured to: subject water received from the first container to a purification process; and store the purified water.

It can improve the water recover rate efficiently after desalting the seawater, and made the equipment simple, save the energy and prevent the sediment on the face of membrane. The key technical scheme: first, the pretreatment seawater is desalted in the reverse osmosis instrument then go into the nanofiltration instrument directly at the high pressure. Last the wastewater return to the reverse osmosis instrument, So it begain a new cycle. The invention can be used to provide fresh water for island, tour region, sea oil flat roof. The equipment also can be loaded in the transporation such as truck, ship and so on.

The invention discloses a seawater desalinating method, which comprises the following steps: hyperfiltering; nanofiltering; desalinizing. The device comprises the following parts: raw water tank, booster pump, hyperfiltering preprocessor, middle tank, high-pressure pump I, nanofiltering element, adjusting tank, at least one desalinization unit and recoil washing pump, wherein the water inlet of recoil washing pump connects middle tank and the outlet connects the water outlet of hyperfiltering predisposer.

The invention discloses a wet desulphurization wastewater recycling method and an apparatus thereof. Collected desulphurization wastewater from a gypsum dehydration device enters a flocculation reactor and is pretreated, the desulphurization wastewater is neutralized, flocculated, softened and clarified, and sludge is sent to a sludge treatment device and is dehydrated; separated clarified water undergoes two-stage ultrafiltration, nanofiltration and reverse osmosis desalting, and desalted water returns to a desulphurization system or other water systems. Desalted concentrated water is a high concentrate salt (NaCl) solution, and the high concentrate salt (NaCl) solution goes through a sodium hypochlorite generator to directly electrolyze salt-containing water in order to prepare a sodium hypochlorite solution, and the sodium hypochlorite solution can be used for sterilizing and disinfecting water to realize effective utilization, changing of wastes into valuables and recycling of the desulphurization wastewater, realize complete recycling of the desulphurization wastewater and realize resource recycling. Further, the method has the advantages of no influences on other systems in a power plant, strong practicality, low investment, realization of resource recycling, and wide popularization and use values.

The invention relates to a novel practical feedforward and feedback control method for the phosphorus removal reagent feeding of urban water reclamation plants. According to the provided control method, a feedforward control link is built on the basis of a phosphorus removal reagent feeding model, and an outlet phosphorus content, an inlet water flow and an inlet phosphorus content are taken as input/output control quantity compensation values of a fuzzy system. Due to the introduction of the compensation values, the system has a certain self-adaption ability, which facilitates the elimination of interferences of factors such as biological phosphorus removal and the like of subsequent phosphorus removal processes. Because other influence factors are considered in the fuzzy system used in the method, the system can implement a more precise reagent feeding process in comparison with general feedforward and feedback control methods, thereby reducing the operating cost of the system; the absorption of microorganisms to organic matter, phosphorus and nitrogen is further promoted, the consumption of required chemical phosphorus removal reagents is lowered, and the biological colony structure in a biological tank is optimized to a certain extent; and the method not only can reduce the economic burden of sewage treatment plants, but also brings a positive influence to an activated sludge process.

The invention presents a urea bio-electrochemical (UBE) system to achieve resource recovery from water recycling systems. A GAC-urease bioreactor was used to recover urea from wastewater stream, and converted to ammonia. Then, the ammonia produced was used to feed an electrochemical cell to gather electrical energy. The invention shows the feasibility of using the UBE system in combination with a forward osmosis subsystem for water reclamation.

The invention discloses a chemical cleaning and chemical repairing method and system for a waste reverse osmosis membrane, belonging to the field of water treatment, wherein the method and system can be used for regenerating the waste reverse osmosis membrane, reducing the water production cost and saving resources. The method disclosed by the invention comprises the following steps: producing pure water for preparing a chemical cleaning-repairing liquid, and storing the pure water in a corresponding container; carrying out back flushing on the waste membrane by utilizing a high-pressure pump, and flushing out the dirt deposited in the water inlet area of the membrane; carrying out forward pumping pm the cleaning liquid into the waste membrane, wherein one part of the cleaning liquid passes through the waste membrane and flows back to the container, and the other part of the cleaning liquid is subjected to chemical reaction with the residual dirt on the surface of the membrane; removing insoluble substances by utilizing a filter before the cleaning liquid flows back to the container; and performing circular cleaning; and if the water recovery rate of the waste membrane is excessively high and the salt removal rate is relatively low after the chemical cleaning, pumping the repairing liquid into the waste membrane again, wherein the repairing liquid passes through the waste membrane to perform circular repairing, and finally the performance parameters of the repaired waste membrane are approximate to those of a new membrane. The method and system disclosed by the invention have the characteristics that the performance parameters of the membrane cleaning process are calculated by use of the display values of a monitoring instrument of the cleaning system, and the chemicalcleaning and repairing processes for the membrane are further instructed.

A system reclaiming contaminated water includes a heat exchanger that receives the contaminated water and converts at least a portion of the contaminated water into steam and collects at least a portion of the contaminants within the heat exchanger. A thermal transfer fluid is heated by a solar concentrator during daytime and by a biofuel combustion device during nighttime. The heated fluid is circulated through the heat exchanger to heat the contaminated water. A steam engine is coupled to a generator, the steam engine receives the steam from the heat exchanger to drive the generator to provide power for the system. Steam exhausted from the steam engine is supplied to supplemental heat loads. The collected contaminants are directed to an evaporation device to remove residual liquid.

The invention discloses a treatment method and a treatment system for desulfurization wastewater, belonging to the field of industrial wastewater treatment. The treatment method comprises the following steps: (1) softening and clarifying desulfurization wastewater to obtain softened and clarified effluent; (2) adding acid into the softened and clarified effluent so as to obtain neutral softened and clarified effluent; (3) in the presence of calcium sulfate seed crystals, adding sodium sulfate into the neutral softened and clarified effluent for hardness regulation and control so as to obtain hardness-controlled effluent; (4) subjecting the hardness-controlled effluent to nanofiltration and separation so as to obtain nanofiltration produced water and nanofiltration concentrated water, and subjecting the nanofiltration concentrated water to normal-temperature crystallization treatment so as to obtain a divalent salt and normal-temperature crystallized effluent; and (5) subjecting the nanofiltration produced water to concentration so as to obtain concentrated water and produced water and subjecting the obtained concentrated water to crystallization and separation so as to obtain a monovalent salt. The method of the invention can significantly reduce operation cost, obviously improve the recovery rate of water, and overally reduce project investment, occupied land area and treatment cost.

The invention provides a desulfurization wastewater treatment method. The desulfurization wastewater treatment method comprises the following steps: pretreating desulfurization wastewater to obtain primarily clarified liquor, enabling the primarily clarified liquor to enter a softening reactor A, and regulating pH value to be 10-11; enabling producing water of the softening reactor A to enter a softening reactor B, and then treating by virtue of a microfiltration membrane system; regulating pH value of producing water of a microfiltration system to 6-7, enabling microfiltration producing water to enter a nanofiltration membrane system A, and separating to obtain nanofiltration A fresh water and nanofiltration A concentrated water; enabling the nanofiltration A fresh water and the nanofiltration A concentrated water to respectively enter four water passageway units of a four-compartment electrodialyzer, and carrying out ion recombination on ions in each water passageway unit by virtue of electric drive. The desulfurization wastewater treatment method provided by the invention has the advantages that salts easy to scale in the wastewater are recombined to form soluble salts difficult to scale, so that the difficulty of scaling of follow-up electrodialysis equipment or a high pressure reverse osmosis system is solved; and then the content of total dissolved solids in the wastewater is controlled to be 8-16% by virtue of concentration of the nanofiltration membrane system, an electrodialysis system or the high pressure reverse osmosis system, and the recovery rate of 80-90% of the wastewater is realized.

The invention relates to a heavy metal wastewater treatment process, comprising the following continuous steps of: pretreatment, solid-liquid separation treatment and filtration treatment, wherein, the filtration treatment means the preliminary filtration, positive ion adsorption treatment and negative ion adsorption treatment to supernatant obtained in the pretreatment step sequentially, the positive ion adsorption treatment adopts a medium of activated zeolite, and the negative ion adsorption treatment adopts a medium of active carbon. Correspondingly, a filtering device applied in an apparatus of the process includes a preliminary filter, an activated zeolite positive ion adsorber and an active carbon negative ion adsorber sequentially communicated with one another. Compared with the prior art, the heavy metal wastewater treatment process and the apparatus can recover the reclaimed water for producing domestic and production water, on the one hand, the treatment process costs are greatly saved, medium and small-sized enterprises can also afford to the process and apparatus, and the application range is broader; and on the other hand, the treatment capacity in unit time is larger, and the recovery rate of reclaimed water is higher.

The invention discloses a water purifier and a control method thereof. The water purifier comprises a reverse osmosis filter element and further comprises a first flushing flow path, a second flushing flow path, a concentrated water discharge flow path and a backflow flow path, wherein one end of the first flushing flow path is communicated with the concentrated water outlet of the reverse osmosis filter element, the other end of the first flushing flow path is communicated with the water inlet of the reverse osmosis filter element, one end of the second flushing flow path is communicated with the concentrated water outlet of the reverse osmosis filter element, the other end of the second flushing flow path is communicated with the water inlet of the reverse osmosis filter element, one end of the concentrated water discharge flow path is communicated with the concentrated water outlet of the reverse osmosis filter element, the other end of the concentrated water discharge flow path is used for discharging concentrated water to the outside world, the concentrated water discharge flow path is provided with a third valve system for controlling the on-off of the concentrated water discharge flow path, one end of the backflow flow path is communicated with the concentrated water outlet of the reverse osmosis filter element, the other end of the backflow flow path is communicated with the water inlet of the reverse osmosis filter element, and the backflow flow path is provided with a fourth valve system for controlling the on-off of the backflow flow path. In this way, the water purifier can solve the problem of rapid performance attenuation of a reverse osmosis membrane on the basis of increasing the concentrated water recovery rate.

The invention relates to a method for embedding life waste via anaerobic-aerobic reactor. Wherein, it comprises that embedding anaerobically the life waste, the generated filter water refluxes to the top of embed layer, and recycles the embed gas; refluxing, to reach certain technique standard, stopping refluxing filter water, to ventilate the embed layer; making said embedded layer in aerobic condition, to remove the water and smell gas of waste layer, lead tail gas into filer water to remove ammonia nitrogen; stopping aerobic step; treating waste water, selecting putrefactive waste to be recycled. The invention can reduce cost and improve the quality of filter water.