1002results about How to "Reduce cleaning frequency" patented technology

The invention publishes a method for producing porous separation membrane, especially involves a multi-layer extrusion molding method. Its characteristic is: completing the extrusion molding of different high polymer solution at the same time. Then realizing separation among different high polymer solution through the inversion of phase's method. Lastly, solidifying to become membrane. In the solidification process, the compound level peel support level, the support level becomes the porous separation membrane which needs. This invention uses the multi-layered system membrane technology, and uses compound level to control the membrane structure, which is simple manufacture, overcome many technology insufficient existing in porous membrane material preparation. The pore membrane has the very big percentage open area, when it filters the high suspension liquid, and can hold the massive pollutant, so that it has high current capacity and low clean frequency.

The invention discloses a sewage treatment method and a system in ecological sensitive areas. The method comprises the following steps: larger suspended matters in sewage are removed by using a collecting well the inlet of which is provided with a mechanical coarse screen, the treated sewage enters a pretreatment tank, the suspended matters are further removed by the coarse screen, animal and vegetable oils and mineral oils are removed by an oil separator, and the retreated sewage enters a regulating reservoir to equalize the water quantity and water quality; the pretreated sewage enters an anaerobic tank to be mixed with backflow mixed liquor from an anoxic tank; effluent from the anaerobic tank and the backflow mixed liquor from a membrane pool are mixed to enter the anoxic tank, and effluent from the anoxic tank enters an aerobic tank; effluent from the aerobic tank enters the membrane pool to be biodegraded; and the effluent is filtered by membranes. By adopting an anaerobic-anoxic-aerobic-MBR mode, the invention has higher treatment efficiency and stability and can effectively remove COD, BOD, TN, TP and oils in the sewage; and the effluent meets first grade A emission requirements, and can be used as a reuse water source, thereby protecting the environment and saving the water resources. The invention is especially suitable for treating rural domestic sewage and catering wastewater in the ecological sensitive areas.

The invention provides a self-cleaning horizontal type dirt remover and belongs to the technical field of chemical equipment. The self-cleaning horizontal type dirt remover also comprises a cleaning assembly, wherein the cleaning assembly comprises a cleaning brush, a rotary motor for driving the cleaning brush and a supporting rod for fixing and supporting the rotary motor; the cleaning brush is attached on the side surface of a filtering net towards the inlet end of a body, and is fixedly connected with an output shaft of the rotary motor. The rotary motor drives the cleaning brush to rotate in the vertical surface. The self-cleaning horizontal type dirt remover provided by the invention has the advantages that the structure is simple; due to the arranged cleaning assembly, the filtering net can be cleaned without stoppage, so that the cleaning efficiency is high, no influence on the production process is caused, the frequency of whole maintenance and clearing of the dirt remover is reduced, the production frequency is improved and convenience is brought for use of equipment in the dirt-removing process.

A method for fabricating and testing a wafer includes forming metal traces with metal pads, wherein forming the metal traces include forming a TiW layer on a passivation layer and on pads, next forming a seed layer on the TiW layer, next forming a photoresist layer on the seed layer, next forming a metal layer on the seed layer exposed by openings in the photoresist layer, next removing the photoresist layer, next removing the seed layer not under the metal layer, and then etching the TiW layer not under the metal layer with an etchant containing H₂O₂ at a temperature of between 35 and 50° C., or with an etchant containing H₂O₂ and with ultrasonic waves applied to the etchant, next contacting probe tips of a probe card with some of the metal pads, next cleaning the probe tips until repeating the step of contacting the probe tips with some of the metal pads at greater than 100 times, and then after cleaning the probe tips, repeating the step of contacting the probe tips with some of the metal pads.

The invention relates to a water treating technology using reverse osmosis membrane, which is a antisludging agent for reverse osmosis membrane. It is characterized in that it comprises following components with their percentage by weight: organo-phosphines acid compound 5-20%, lignin 0.5-1%, polymaleic anhydride0.5-3%, phosphinic carboxyl acid 5-20% and water with left percentage.

The invention relates to a processing technology for recovering and utilizing the mother solution of glyphosate as a resource, which comprises the following concrete steps: firstly, preprocessing themother solution of glyphosate, and then, separating, concentrating and recovering the glyphosate by a membrane combination technique; returning the concentrated solution to a crystallization working section in the production process of the glyphosate after membrane filtration, thereby effectively recovering and utilizing the glyphosate resource; adsorbing the diluted solution with high efficiency,and further recovering and utilizing the glyphosate; and processing the adsorbed solution by catalytic oxidation with high efficiency to recover the sodium chloride resource with higher purity. The invention achieves the purposes of recovering and utilizing the glyphosate in the mother solution as a resource to the maximum extent and efficiency separating, recovering and utilizing the sodium chloride as a resource, has the advantages of economical technology, high efficiency, good system stability, high safety, easy operation, convenient industrial amplification, and the like, solves the problems of the soil salinization caused by applying water agents with high content of sodium chloride, the processing and disposal of solid wastes of the sodium chloride and the environment pollution, and effectively recovers and utilizes the resources of the glyphosate and the sodium chloride in the mother solution of the glyphosate.

The present invention relates to a reverse osmosis membrane scale inhibitor and applications thereof. The scale inhibitor contains an organic phosphonate, an organic carboxylic acid polymer, an organic amine and a surfactant, wherein a weight ratio of the components is 1:0.2-2.0:0.02-0.10:0.02-0.15. With application of the scale inhibitor of the present invention in a reverse osmosis system water treatment, the problem of membrane pollution caused by deposition of CaCO3, Ca3(PO4)2, CaSO4, BaSO4, SrSO4, CaF2, iron oxide and zinc salts on a reverse osmosis membrane can be solved, a reverse osmosis system work efficiency can be increased, a service life of reverse osmosis membrane agents and reverse osmosis equipment can be prolonged, and an operation cost of reverse osmosis can be reduced.

In certain example embodiments of this invention, there is provide an ion source including an anode and a cathode. In certain example embodiments, the cathode does not overhang over the anode, or vice versa. Since no, or fewer, areas of overhang are provided between the anode and cathode, there is less undesirable build-up on the anode and/or cathode during operation of the ion source so that the source can run more efficiently. Moreover, in certain example embodiments, an insulator such as a ceramic or the like is provided between the anode and cathode.

The invention provides water quality monitoring equipment for aquaculture. The water quality monitoring equipment comprises a left floating body, a right floating body, a support seat arranged on theleft floating body and the right floating body, a plurality of water quality sensors arranged on the lower end surface of the support seat, a waterproof cover arranged on the support seat as well as alifting motor, a control device and a power supply device which are arranged in the waterproof cover, wherein the lifting motor controls lifting and dropping of a lead screw with the lower end vertically penetrating through the support seat, the bottom end of the lead screw is connected with a plurality of cleaning sleeves, each cleaning sleeve is arranged on the corresponding water quality sensor in a sleeving manner, and the cleaning sleeves can slide on the outer side walls of the water quality sensors with the vertical movement of the lead screw; the water quality sensors and the liftingmotor are connected with the control device, and the power supply device supplies power to the whole equipment. The water quality monitoring equipment for aquaculture has the function of cleaning surfaces of the water quality sensors at fixed period, so that the normal operation of the water quality sensors is guaranteed, and the service life of the equipment is prolonged.

The invention provides a cleaning agent that is applicable to clean hollow fiber ultrafiltration membrane, which comprises the compounds (percentage by weight): anhydrous sodium carbonate accounts for 25-45 percent, trisodium phosphate accounts for 5-20 percent, anhydrous sodium sulfate accounts for 2-5 percent, ethylene diamine tetraacetic acid tetrasodium salt (EDTA-4Na) accounts for 5-15 percent, sodium percarbonate accounts for 0-33 percent, emulsifying agent SAS accounts for 8-15 percent, peregal-25 accounts for 0-5 percent and dodecyl sodium sulfate accounts for 4-10 percent. The compounds are added into an enamel reactor with a stirrer and a grinder in sequence to be stirred for 2-3 hours, thus obtaining the cleaning agent through grinding the mixture evenly. The invention has simple preparation and is particularly applicable to clean hollow fiber ultrafiltration membrane such as ultrafiltration oily wastewater, organic wastewater, protein concentration, etc.; the invention has strong decontamination direction, high effect and low cleaning cost.

The invention discloses a garbage leachate treatment process; a garbage leachate is treated by an adjusting pool, an anaerobic biological treatment unit, a minisize anaerobic-aerobic treatment unit, a membrane bioreactor and an evaporation system (MVC) in turn, and through evaporation, distilled water formed from water and ammonia reaches standards and is discharged after passing through a cation-anion resin exchange system; non-condensable gas reaches standards and is discharged after passing through a deodorization system, and a concentrate is discharged out of the evaporation system; the garbage leachate treatment process is respectively subjected to anaerobic biological treatment, minisize anaerobic-aerobic treatment and membrane bioreactor treatment before evaporation treatment, so as to greatly alleviate the operation burden of the evaporation system (MVC), relieve the fouling problem of the evaporation system (MVC) to a largest extent and reduce the frequency of cleaning; the garbage leachate treatment process is applicable to treatment of conventional high-COD and high-NH3-N garbage leachates, at the same time, is applicable to treatment of leachates with different landfill ages or different types through adjustment of related process parameters, and effectively relieves the burden of process operation.

The invention discloses an intelligent control system and control method for the cleaning of a solar photovoltaic panel, and belongs to the technical field of solar photovoltaics. The system is composed of a meteorological data module, a data acquisition module, a monitoring unit, a robot workstation and an inspection cleaning robot. The monitoring unit is used for collecting and recording a powergeneration current and the real-time meteorological data of a power plant and comparing the power generation current and the real-time meteorological data with a normal power generation efficiency attenuation model built in the system to obtain a real state that the accumulated dust affects the power generation efficiency. Through comparing the optimal cost operation data, an optimized scheme forcleaning the photovoltaic array is obtained, and the automatic cleaning robot is controlled to automatically clean the photovoltaic panel. Compared with the prior art, the system can automatically recognize local pollution of the photovoltaic panel and automatically clean he local pollution, can effectively prolong the overall cleaning period of a solar power plant, reduces the overall cleaning frequency, prolongs the service life of the photovoltaic panel, reduces the operation cost, optimizes the cleaning period, and achieves the optimization of the power generation efficiency and the operation cost.

The invention relates to a sterilization method capable of preventing a reverse osmosis membrane from being polluted and plugged by microbe. The sterilization method mainly comprises the steps of adding an oxidizing sterilizing agent NaClO (5%) solution to a raw water tank continuously; adding a reducing agent NaHSO3 (35% W/V) solution continuously after ultra-filtration; removing residual chlorine thoroughly; controlling a pH value of inlet water at a reverse osmosis inlet between 7.1 and 7.4; monitoring and controlling ORP before a security filter between 200 mv and 300 mv; and sterilizing by carrying out preventative addition of a non-oxidizing sterilizing agent DBNPA solution with a concentration of 50 ppm continuously for one hour once every week in the above flow according to the quick killing characteristic of the non-oxidizing sterilizing agent DBNPA. Meanwhile, NaClO addition to the raw water tank is stopped. The sterilization method mainly takes use of the oxidizing sterilizing agent accompanied by two non-oxidizing sterilizing agents to carry out preventative sterilization alternatively, controls drug tolerance and resistance of the microbe, can effectively prevent and control propagation and excessive multiplication of the microbe on the surface of the reverse osmosis membrane, thereby preventing the reverse osmosis membrane from being polluted and plugged by the microbe.

The invention discloses a cleaning agent for a ceramic membrane for oilfield produced water, and overcomes the deficiency that the ceramic membrane for the oilfield produced water does not have an effective cleaning method and an effective cleaning formula. The cleaning agent comprises a component A, a component B and a component C, wherein effective constituents of the component A are sodium hydroxide and sodium alkyl benzene sulfonate; effective constituents of the component B are sodium hydroxide, sodium alkyl benzene sulfonate, ethylene diamine tetraacetic acid sodium salt, triethanol amine and sodium tripolyphosphate; and effective constituents of the component C are sodium hydroxide, sodium alkyl benzene sulfonate and hydrogen peroxide. The cleaning agent aiming at characteristics of the oilfield produced water has the advantages that dirt on the surface of the membrane and in membrane holes can be removed rapidly and efficiently, the cleaning frequency of the membrane is reduced, the cleaning temperature and the cleaning time are greatly reduced, the permeation flux of the ceramic membrane is recovered rapidly and efficiently, and the regeneration of a system is accelerated.

The invention relates to an filtering pool, includes a square pool, multichip unit filters arranged in the pool, a first clapboard, a second clapboard, a third clapboard connected in turns in the pool, the first clapboard is erected in between a water outlet end and end of the multichip unit filters, the second clapboard is supported on bottom of the multichip unit filters and kept space from bottom of the pool, filter bracket of each unit filter includes a substrate and a frame-type lateral plate, filtration medium is lied on external surface of the frame-type lateral plate and the substrate on the bottom is provided with at least one purified water outlet, and position on the second clapboard corresponding to each purified water outlet is provided with purified water outlet. Comparing with the prior art, the invention applies combination of unit filter processing units, capable of setting processing units flexibly according to processing capacity. The invention provides advantages of low energy consumption, filter screen with small pore diameter, abrasion-resistance, high fltering speed, good water quality, high processing efficiency, easy replacement and low cost.

The invention relates to the field of coal chemical wastewater treatment, in particular to a device and a method for purifying methanol-to-olefin device washing water. The method comprises the following steps: pumping out the washing water from the bottom of a washing tower, and sending to a granular-bed separator; enabling the washing water to run through the granular bed in a horizontal direction, intercepting particulate matters in water, and agglomerating microfine oil droplets in the water under the oil substance adsorbing and agglomerating actions of medium particles in the granular bed;performing settling separation on the agglomerated oil droplets under the action of gravity; after the granular bed adsorbs the particulate matters in the water till a saturated state, feeding wastewater from the bottom of the granular bed, mixing with gas, fluidizing the medium particles till a boiling state, releasing solid pollutants between bed layers, and sending the pollutants to a solid concentrating unit along with backwashing liquid. By the method, separation of catalyst particles and the oil substances from the washing water is achieved.

The invention relates to a water-proof ceramic tile cleaning agent. Components and mass part of the components are organic acid 12-17 parts, a non-ion surface active agent 3-6 parts, a water-proof agent 3-5 parts, a slow release agent 2-4 parts, a thickening agent 2-4 parts and ammonia water 2-5 parts. The water-proof ceramic tile cleaning agent has a water-resistant function, can prevent a ceramic tile from being polluted again, reduces cleaning frequency, and is safe and environment-friendly.