202results about How to "Meet water requirements" patented technology

The invention relates to a method for carrying out desalination and zero-discharge processing of power plant desulphurization wastewater by adopting an electrodialysis technology. The method comprises the following steps: neutralizing, precipitating, coagulating and filtering the power plant desulphurization wastewater and removing CODs (Chemical Oxygen Demands), heavy metals, F-ions, gypsum, silicon dioxide, hydroxide of iron and aluminum and other insoluble particles in waste water; separating C1-ions and other monovalent ions in clear liquid from SO3<2->, SO4<2-> and other divalent ions through nanofiltration; desalinating and concentrating water produced by the nanofiltration by adopting a multistage countercurrent reverse electrodialysis method. The method has the advantages that the concentration of the Cl-ions in nanofiltration concentrated water and electrodialysis freshwater generated by the method is lower, and the nanofiltration concentrated water and the electrodialysis freshwater can be returned for flue gas desulfurization; the content of NaCl in a small amount of electrodialysis concentrated water produced reaches above 12 percent, the bivalent ions and other impurities are removed by nanofiltration, and the electrodialysis concentrated water is further evaporated and concentrated, so that chlorine-alkali industry electrolytes and NaCl salt can be obtained. Through the method, the zero-discharge treatment and the resource utilization of the desulfurization wastewater can be realized.

This invention is related to a process of disposing urban sewage, which comprise the steps of coagulate filtration, ozone oxidation, biological oxidation to dispose urban sewage, so that the residual undegradable organic substances, bacteria and virus in the second-class urban sewage can be removed and the water can be recycled. According to different usages of the recycled water, the process also comprises reverse osmosis or nanoscale filtration treatment to further remove the residual organic and inorganic substances in the water. The process is a combination of coagulate filtration, ozone oxidation, biological oxidation and reverse osmosis, designed to resolve such problems as urban sewage disposal and water recovery. The process can obtain high-quality recycled water with a low cost, showing high cost performance, which is important to resolving urban water depletion, raising the utilization rate of water resources, reducing environmental pollution and promoting sustainable development of the society.

The invention relates to a method for treating container washing wastewater, comprising the pretreatment, physical and chemical treatment, biochemical treatment and advanced treatment, wherein the pretreatment comprises the step of filtering suspended matter and oil slick out by an oil separation tank and a collected water regulating reservoir so as to homogenize water quality and water quantity; the physical and chemical treatment comprises the step of removing oil substances and COD by an air flotation device; the biochemical treatment comprises the step of removing hazardous and noxious substances by an AF anaerobic filter chamber and an SBR reaction tank; and the advanced treatment comprises the steps of degrading organic matters and sterilizing by a moving bed biomembrane reactor and an ozone catalyzing oxidation pond, wherein the treated wastewater serves as washing water after reaching normal water reuse standards. The invention not only treats the container washing wastewater containing oil, poisonous substances and organic hazardous chemicals into clear water meeting the national discharging standards and discharging standards in Tianjin, but also reduces the content of the suspended matters and oils, and saves water resources because the clear water after being treated can serve as the reuse clear water.

The invention discloses an advanced oxidative coupling device and process for treating organic wastewater difficult to degrade. A main device body comprises an ozone oxidation-multi-dimensional electro-catalysis/microelectrolysis area, an ozone oxidation-microelectrolysis/Fenton area, a coagulation area and an inclined plate sedimentation area, wherein the ozone oxidation-multi-dimensional electro-catalysis/microelectrolysis area comprises a multi-dimensional electrolysis/microelectrolysis area at the upper part and an ozone oxidation area at the lower part; the ozone oxidation-microelectrolysis/Fenton area comprises a microelectrolysis/Fenton area at the upper part and an ozone oxidation area at the lower part. The device combines four levels of advanced oxidation systems, and electrocatalytic oxidation, ozone oxidation, Fenton oxidation and a microelectrolysis reaction are mutually coupled in function, so that an organic matter difficult to degrade is subjected to multi-level oxidation to realize complete oxidative cracking; when the device is used for treating the organic wastewater difficult to degrade, the yield and the production rate of *OH are increased, the liquid phase transfer process is accelerated, the overall current efficiency of the device is increased, operation expenses are saved, flexible regulation and control of a process unit are realized, and the device can be used for treating various kinds of organic wastewater difficult to degrade.

The invention belongs to the technical field of seawater desalting and water treatment and relates to a washing method for preventing a reverse osmosis membrane or a nano-filtration membrane from being polluted. The washing method comprises the following steps of: firstly carrying out gas-water two-phase flow washing or simultaneous chemical washing; then extracting reverse osmosis concentrated water to wash the surface of the reverse osmosis membrane; discharging the reverse osmosis concentrated water through a concentrated water discharging valve; then, conveying pretreated water to a reverse osmosis module and displacing and discharging washing concentrated water on a reverse osmosis concentrated water side until the conductivity is recovered to 98% of the conductivity of the pretreated water; finally, closing a washing water discharging valve and opening the concentrated water discharging valve to recover normal operation of the reverse osmosis module; and sequentially washing other sets of reverse osmosis modules. The washing method disclosed by the invention is reliable in process, simple and convenient to operate, lower in energy consumption, good in economic benefits and social benefits, and environment-friendly.

The invention relates to the field of technologies for treating environmental engineering wastewater, in particular to a method and a system for treating desulfurization wastewater in a zero-discharge manner on the basis of electrodialysis. The method and the system have the advantages that electrodialysis concentrated water is regulated and distributed into a bipolar membrane electrodialyzer and a flue evaporating apparatus in membrane treatment phases, acid and alkali can be manufactured by the bipolar membrane electrodialyzer and flow back for pretreatment and membrane treatment, and accordingly the wastewater can be reduced and recycled; electrodialysis fresh water flows back for membrane treatment, accordingly, the reuse rate of the fresh water can be increased, the pretreatment chemical feeding cost and chemical preparation workload can be reduced, and desalting load and tail-end evaporation crystallization load on the system can be integrally relieved; tail-end treatment of the system is effectively regulated, accordingly, the method and the system can cope with different types of variation of water quality and water volumes of power plants, and the integral system can assuredly stably run; zero-discharge effects are realized by the system for treating the desulfurization wastewater, environment-friendly design requirements on treating waste by the aid of waste can be met, and the method and the system have broad application prospects.

The invention discloses bitter saline water desalination equipment, which comprises a raw water tank, and a high pressure pump, a reverse osmosis membrane component and a drinking water tank which are sequentially connected. The bitter saline water desalination equipment further comprises a physical-chemical program controlled composite coupling preprocessor consisting of a raw water pump, a laminated filter and a program controlled ultrafiltration device which are sequentially connected. The bitter saline water desalination equipment has the advantages that the process of physical-chemical program controlled composite coupling preprocessing filtration is adopted so that the raw water with different types and different qualities can be pretreated to meet the inlet water requirement for the reverse osmosis membrane component, thus the inlet water quality for the reverse osmosis desalination is improved, the rubber body pollution and the microorganism pollution to membrane elements in the reverse osmosis membrane component are prevented, the unit area permeation flux of the reverse osmosis membrane component is improved, and the protection of the reverse osmosis membrane elements is increased; at the same time, the chemical cleaning frequency of the reverse osmosis membrane elements is reduced, the service life of the membrane elements is prolonged, the operating cost is reduced, and the production efficiency is improved.

The invention relates to an electronic electroplating wastewater recycling advanced treatment technology. The technology uses a large amount of rinse-wastewater with heavy metals in the production process of the electronic electroplating industry as the main object, adopts a combined technology of pH adjustment-microfiltration membrane treatment-pretreatment-reverse osmosis membrane treatment, is mainly characterized by the joint application of DF membrane technology and RO membrane technology and can achieve the aim of reusing wastewater and reducing the emission of heavy metals; and the reuse water reaches the production demand of process water, thus saving the fresh water consumption of the industry, effectively reducing the production cost of the industry, solving the pollution problem of heavy metals, increasing the clean production level of the electronic electroplating industry and having remarkable social environmental and economic benefits.

The invention discloses a water temperature automatic control circuit for a temperature constant water heater. The water temperature automatic control circuit for the temperature constant water heater comprises an electric heater power supply circuit, a voltage transformation rectifying voltage stabilizing circuit, a display circuit, a mini-type electric water valve circuit, a trigger circuit , a microcomputer chip and a control signal transmission circuit. According to the water temperature automatic control circuit for the temperature constant water heater, the microcomputer chip control technology is adopted, the output power can be adjusted at any time according to dynamic data of the in-out water temperature and the setting temperature, and the water volume is adjusted through a mini-type water valve motor, so that the effect of enabling the effluent water temperature to be constant at any time is achieved and even in winter, when the water volume is large and the water temperature is low, the water heater can automatically adjust the water volume to achieve constant temperature and achieve the effect of being good in utilization comfort of bath and sanitary water.

The invention relates to an underground micro-irrigation device, and belongs to the technical field of agricultural water-saving irrigation. The underground micro-irrigation device disclosed by the invention comprises a groundbreaking cone and an outer tube, wherein the groundbreaking cone is arranged at the lower end of the outer tube, an advance-retreat rotating rod, a water inlet pipe, a fixator, a soil scraper and an emitter are arranged in the outer tube, the fixator is arranged in the middle of the outer tube, the advance-retreat rotating rod and the water inlet pipe are fixed in the outer tube through the fixator, the soil scraper is arranged on the lower side inside the outer tube, a sliding rail is arranged at the lower part of the outer tube, and the emitter is arranged on the sliding rail. The underground micro-irrigation device disclosed by the invention can satisfy the water demands of crops; due to adoption of underground irrigation, water can be saved, so that the root system of a crop can achieve the best water uptake effect, and the utilization efficiency of water can be improved; the device can be inserted and drawn out randomly as required, and does not need to be pre-buried underground, the position and depth of irrigation can be adjusted, and the emitter has small possibility of being jammed; and the device is convenient to carry, easy to install, good in water-saving effect, and easy to popularize and apply.

The invention relates to a water pump intelligent temperature-control water supply system which ensures a basically stable water temperature of domestic water, heating water and pipe internal circulating water and saves water resource and heat energy. The system comprises a water pump, a power supply control circuit, a central control unit and a temperature sensor; wherein, an inlet of the water pump is connected with a hot water tank, an outlet of the water pump is connected with an inlet end of a water return pipe, and an outlet end of the water return pipe is connected with the hot water tank; the temperature sensor is used for detecting the temperature on the water return pipe; the central control unit is used for turning on or shutting down the water pump according to the temperature gap between the temperature measured by the temperature senor and the preset temperature; when the measured temperature is 0.5 to 3 DEG C lower than the preset temperature, the water pump is turned on; and when the measured temperature is 0.5 to 3 DEG C higher than the preset temperature, the water pump is shut down. In addition, in different periods, the central control unit turns on or shuts down the water pump through the power supply control circuit according to the temperature gap between the temperature measured by the temperature sensor and the corresponding different preset temperature.

The invention relates to a novel improved process for intermediate water reuse. Aiming at the shortages of traditional process in pre-processing process of film separation technique, the improved process adopts secondary magnetic separation technique and corresponding magnetic filter devices to replace traditional filter process and devices, and adds magnetic seeds and flocculant, which are taken as the pre-processing technique and devices of the film separation technique. Contaminations in wastewater pre-disposed by the improved process can be basically removed, the water quality requirement of film separation water intake is complied with, the miro-filtration, ultra-filtration, nano-filtration and pressure of reverse osmosis film are greatly lightened, the service life of the film is prolonged, and the cost of intermediate water reuse disposal is reduced.

The invention relates to a view tower type device for water aeration and biological purification. The structure of the view tower type device is a tower type structure, and the device comprises a water outlet 1, a spill pit 2 and an outlet channel 5, wherein the water outlet 1 is formed at the center of the spill pit 2, and the outlet channel 5 is communicated with the water outlet 1; a plurality of functional layers are arranged to surround the spill pit 2, each functional layer comprises a biological ball purification region 3 and a landscape aquatic plant region 4, and the landscape aquatic plant region 4 is arranged to surround the biological ball purification region, one end of the spill pit 2 is connected with a water duct 7, and a water pump 6 is mounted at the other end of the water duct 7. The view tower type device has the advantages that the dissolved oxygen concentration in sewage is improved by virtue of free wall fall, and a biological enhanced treatment function is added so that the treatment efficiency of constructed wetlands can be improved obviously and the water quality of the sewage plant effluent can be improved. Compared with existing techniques, the landscape functions of the constructed wetlands are not damaged, and the landscape effect of the constructed wetlands and the sewage plants also are added. In addition, the view tower type device for water aeration and biological purification is simple in structure, low in construction cost and convenient to repair.

The invention discloses a pretreatment method for industrial wastewater of pyrethroid. The pretreatment method is characterized by comprising the following steps of: (1) carrying out first-grade treatment by a ferric-carbon microelectrolysis technology to remove a part of pollutant in industrial wastewater; (2) carrying out second-grade oxydative degradation treatment on the micro-electrolyzed industrial wastewater by a diamond electro-catalysis technology; and (3) carrying out third-grade treatment on the wastewater which is electrically catalyzed by diamond by the ferric-carbon microelectrolysis technology. The method is very good in treatment effect of various pesticide wastewaters, and can meet the water inflowing requirement of the existing biochemical wastewater treatment (COD (chemical oxygen demand) is less than 1000mg/L).

The invention discloses a refractory organic wastewater treatment method capable of obviously improving the biodegradability of organic wastewater. The method comprises the following step of: placing refractory organic wastewater into a low-temperature plasma environment for treatment so as to improve the biodegradability of the organic wastewater, wherein the low-temperature plasma environment is produced by a dielectric barrier discharging low-temperature plasma device or a double-channel discharging plasma device. By the treatment method, the biodegradability of the refractory organic wastewater can be fast improved (within 10 minutes), and the refractory organic wastewater can meet the requirements (the ratio of biochemical oxygen demand to chemical oxygen demand is more than or equal to 0.3) on inflow water quality in a biochemical method.

The invention discloses a high-speed filtering device of novel polymeric fiber for the treatment of landscape waters, rivers and raw water. The invention is mainly used in the treatment of indoor, outdoor and other landscape waters, and is also used in the treatment of rivers and raw water. The device can filter water continuously and lastingly with high speed and efficiency, and can be used repeatedly. The invention adopts the novel polymeric fiber membrane separation technique, and mainly treats the suspending solids, flocculate, particle matters and other materials which are difficult to break down in the water body. By continuous treatment and after certain cycle period, the water body treated is changed from muddy into clear, and better meets the requirements of landscape water or the standards of raw water effluent.

The invention discloses a textile dyeing wastewater treatment and reclamation technique. The invention aims to provide a textile dyeing wastewater treatment and reclamation technique. According to the characteristics of textile dyeing wastewater, the existing biochemical and physicochemical treatment systems are reasonably combined to form a textile dyeing wastewater treatment technique which has the advantages of low cost, high treatment efficiency and stable system operation. The technique comprises the steps of pretreatment, secondary biochemical treatment and after-treatment. Floatation, CBR, ASB, precipitation, floatation, ozone and other processes are performed for treatment, so that the treated wastewater can finally be discharged after reaching the standard and satisfy the reclamation standard. The technique is suitable for textile dyeing enterprises with restricted water supply or restricted drainage capacity, and can implement energy saving and emission reduction for the enterprises and lower the operating cost.

The invention discloses a boiler make-up water treatment system and method in a power station. The boiler make-up water treatment system comprises a reverse osmosis pretreatment device, a first-stage reverse osmosis device, an EDI device, a demineralized water tank and a membrane degassing device, wherein the membrane degassing device is connected with the first-stage reverse osmosis device, the back end of the membrane degassing device is connected with an intermediate water tank, the back end of the intermediate water tank is connected with a reverse osmosis water production pump, the front end of the EDI device is connected with the reverse osmosis water production pump, the back end of the EDI device is connected with the demineralized water tank, the back end of the reverse osmosis pretreatment device sequentially passes through a pipeline mixer, a security filter and a high-pressure pump to be connected with the first-stage reverse osmosis device, the front end of the reverse osmosis pretreatment device is connected with a raw water pump, the membrane degassing device is connected with a vacuum pump, the EDI device is connected with a washing backwater pipeline and a clear water supply pipeline and valve switches are arranged on the pipelines. The boiler make-up water treatment system disclosed by the invention has the advantages of low investment, small land occupation, low power consumption and low production cost, is capable of reducing the power consumption and the investment of the water treatment system and can improve economic benefits.

The invention relates to an intelligent flowerpot which comprises a flowerpot body, a control system, a user interaction system, an irrigation system, a rotating system and a power supply device. The control system comprises a processor, a memory device and a peripheral circuit. The user interaction system comprises a display module and a key module. The irrigation system comprises a soil humidity detecting module, an electromagnetic valve and a hose. The rotating system comprises a flowerpot tray, a flowerpot base and a direct current speed reducing motor module. The power supply device comprises a battery pack and a voltage conversion module. The soil humidity detecting module is buried into soil to measure a current soil humidity value, and the processor controls opening and closing of the electromagnetic valve according to the value to achieve automatic irrigation. The flowerpot tray is arranged on the flowerpot base and connected with a rotating shaft of a direct current speed reducing motor. The direct current speed reducing motor is driven by a motor driving module. The processor controls the rotating speed and the direction to achieve automatic rotating of the flowerpot.

The present invention discloses a high acid crude oil electric desalting wastewater treatment method, which comprises that high acid crude oil electric desalting wastewater is sequentially subjected to an oil and suspended solid removing treatment, a sequencing batch reactor activated sludge treatment (SBR), a flocculation treatment, a Fenton oxidation treatment and a membrane bioreactor (MBR) treatment, wherein SBR is mainly provided for removing BOD and ammonia nitrogen, the flocculation treatment and the Fenton oxidation treatment are mainly provided for treating naphthenic acid and other organic matters difficultly degraded by SBR, and MBR is provided for deep treatment of residual dissolved organic matters and suspended solids after the Fenton oxidation treatment. According to the present invention, COD in the treated effluent is less than or equal to 40 mg/L, ammonia nitrogen in the treated effluent is less than or equal to 2 mg/L, petroleum in the treated effluent is less than or equal to 2 mg/L, and turbidity is less than 1 NTU, such that the stringent local discharging standard can be met, and the effluent can be used as influent for reverse osmosis constant depth reuse treatments. The method is suitable for standard discharging treatments of electric desalting wastewater from high acid crude oil processing or polymer flooding oil field wastewater and various naphthenic acid-containing wastewater.

The invention discloses a method for desalting sewage by using a membrane separation technology. The method comprises the following steps: (1) adding sewage into a stirred reaction tank, adding sodium hydroxide or calcium hydroxide, adjusting the pH value to 9.0-11.5, and carrying out stirred reaction for 40-110min; (2) carrying out hardness removal pretreatment on a mixed solution after reaction by using a microfiltration membrane, wherein the microfiltration membrane has the aperture of 0.1-0.2mum, and dead end or cross flow filtration is used as a filtration way; (3) enabling the pretreated concentrated water to enter a concentration tank or residue pond; (4) pressurizing the pretreated production water, and desalting the pretreated production water in a reverse osmosis system or nanofiltration system. The reverse osmosis or pretreatment of a nanofiltration membrane is realized through hardness removal by using the microfiltration membrane, the production water is good in quality and good in hardness removal effect, and the reverse osmosis or scaling pollution of a nanofiltraiton membrane is reduced; the microfiltrated concentrated water is high in suspended matter content and convenient for dehydration treatment; the reverse osmosis or nanofiltration can be carried out under slightly alkaline conditions, so that pollution form organic matters and microorganisms can be reduced.

The invention aims to provide a river water filtration and purification process that can remove impurities in river water. And the water purified by the process cannot generate unfavorable effects in later stage use by dyeing and finishing enterprises. A flotation tank is added in front of a coagulation precipitation tank. The river water entering the flotation tank is first mixed with polyaluminum chloride, and then enters the flotation tank. The water obtained by the process can effectively satisfy the requirements of water needed by dyeing and finishing enterprises in production, so that the water expenditure of the enterprises can be substantially reduced. Besides, application of the water to product dyeing has the advantages of good dyeing effect, uniform dyeing and the like.

The invention discloses a coal mining area wastewater treatment recycling system, belonging to the technical field of water treatment and relating to a system for treating mine water. Shortcomings still exist in the mine water treatment recycling process, and wastewater in the mining area cannot be completely treated and recycled. The coal mining area wastewater treatment recycling system is characterized by comprising a clean mine water recycling subsystem, a high salinity mine water treatment recycling subsystem, an acidity mine water recycling subsystem, a suspended matter containing mine water recycling subsystem, a coal washing wastewater recycling subsystem and a domestic wastewater treatment recycling subsystem. The recycling subsystems are connected with each other and complement each other, so that production wastewater and domestic wastewater in the coal mining area are recycled, and the technical effect of the zero release of wastewater in the coal mining area is achieved. The coal mining area wastewater treatment recycling system is simple in structure. The construction and operating expenses of a part of facilities for wastewater treatment are reduced.