With the improved living standards, health requirements and drinking more and more people, the traditional preparation of pure water, such as ion exchange process can not meet the requirements. At present, the reverse osmosis method of drinking water preparation has begun to be widely recognized. I The company has prepared the first to use this technology, used in household water, and has achieved good economic . 1, the reverse osmosis membrane separation principle and performance with a Zhang semipermeable membrane net dilute solution (eg water) with a strong solution (eg saline) separated by thin strong solution to the penetration of the solution and maintain the appropriate osmotic pressure, this phenomenon is called the infiltration phenomenon. If the intense pressure solution at greater than the osmotic pressure, the strong side of the solution will penetrate to the dilute solution, this phenomenon is called reverse osmosis phenomenon. RO touch technology is internationally recognized as high-tech, which applied pressure to the solution with the solvent through through semi-permeable membrane and the retention of certain solutes, it is the separation, concentration and purification is an effective means. RO membrane surface pore size is generally about 0.0001 micron, which can effectively remove particles, colloids, bacteria, caused by heat and organic matter and most of the ion . present our products using the most advanced reverse osmosis membranes, the high level of technology, the performance leader in reverse osmosis plant in the domestic new products. The film properties indicators are : desalination rate: ≥ 95% operating pressure: 0.3 ~ 0.6Mpa PH Usage: 2 ~ 10 Life: 2 ~ 3 years 2, the reverse osmosis membrane and other membrane Comparison of Separation reverse osmosis and ultrafiltration, microfiltration are the driving force in the static pressure difference across the membrane separation of liquid mixtures under the action of the membrane process, the three formed a detachable solid particles to ion of three membrane separation process. separation as shown in the table.
reverse osmosis ultrafiltration microfiltration corresponding particle filter
common material atoms, metal ions, water-soluble salt, sugar pyrolysis objects black, viruses, soot, colloid, bacteria paint pigment, dust lung injury, bacterial germs, human hair, sand material, pollen, flour particle size range
separable (um) <0.002 0.0015-1.2 0.09-1.2> ; 1.1
3, reverse osmosis system operation should be noted that several issues To ensure the long-term stable operation of reverse osmosis systems, should pay special attention to the following questions: ① pre surface water with higher levels of suspended and colloidal impurities need to improve the pretreatment system, the general vote shall be measured flocculants (such as basic aluminum chloride, etc.), coagulant (such as polyacrylamide ), with multi-media fine sand filter (filtration rate to be controlled at 8m / h below the sand particle size of 0.4 ~ 0.6mm), activated carbon adsorber (mainly used to remove the activity of chlorine and organic matter), followed by one to two fine filter (a device designed by the two fine filter) to protect . the raw water quality fluctuations, so the dosage of flocculant to be adjusted depending on water quality, too much, too little not conducive to removal of suspended and colloidal impurities muddy, but should be noted that changes in water temperature, the fine sand filter, activated carbon adsorption, two fine filter, the water turbidity generally up to ≤ 0.3NTU, SDI (pollution index) <4 . of the pretreatment system, the media should be more refined on a regular basis to kick sand filter, replace the filter regularly. working on activated carbon adsorption device for 6 months, should be measured every 15 days of its time (with test strips), whether observed failure, failure should be replaced if activated carbon adsorption. ② membrane cleaning and maintenance When the RO system in the pollution of the tendency for a long time before this outage , or according to plan routine maintenance, and should be cleaned. When any of the following pollution characteristics (normalized water production decreased by 10% to 15%, the standardized quality of water decreased by 10% to 15%, or between water and dense water The pressure drop increased by 10% to 15%) when, RO systems need to clean the pollution . RO system in the frequency of cleaning required vary by location, general cleaning frequency is 3 to 12 months a . basic cleaning methods are: 1, water or product water with low pressure washing to remove the equipment running water and the concentration of pollutants . ③ Press the manufacturer's instructions to replace RO membrane or automatic washing machine (in the previous case to be determined according to the specific types of pollution ). Once all the equipment are cleaned after each segment, RO device can be put into operation again. Once the replacement of the membrane components, usually the product water quality to use for hours or even days to stabilize . 4, the advantages of reverse osmosis water law RO water has a traditional legal method can not match all the advantages of ion energy, the product water quality and stability, to remove all bacteria can not be removed Ion, organic, etc.; extended reproduction cycle of ion exchange equipment, about 30 times, saving a lot pH; operating costs lower than three-quarters of the whole Ion; full ion method required manual operation, the environmental impact of large production site, while the reverse osmosis plant to fully automatic continuous operation, and no leaking. Shanghai Lin Tong Bird Water Treatment Equipment Co., Ltd. is a professional water treatment equipment in the production and sales of integrated foreign-owned enterprises. In the company of adhere to the research, engineering, water treatment industry experienced research team from the group of developed world's first company . barrels of water stress-free Features : single-membrane system - using the world's most advanced low-pressure high flow reverse osmosis membrane element, a 2812 film components to achieve the original 400GPD 80% pure water production unit, is the traditional model of the 6 times 50GPD; No pressure tank - machine capacity is comparable to the pressure barrel type water flow, leading to open access to high quality drinking water, which means that the drink, health and safety, solve the existing water pressure tank models storage time is longer, by the pressure tank material impact may occur even smell nitrite and microbial contamination and many other issues, the real meaning of the : 2 water ratio, washing time is short, 40 %; large flow of water - the existing flow of 50 gallons of machine 6 times more than ordinary pure water pressure tank 50 gallons flow, water flow rate of about 0.7L/min ~ 1.2L/min (depending on water temperature may be ); long life - membrane component life 50GPD membrane components of the existing more than 2 times (depending on the actual amount of water set ); simple - single membrane system, small size, easy to install, high-pressure pump is optional (high pressure area water reverse osmosis membrane element can be directly driven water production); wide range of applications - water production over 300GPD, not only for ordinary household use, but also to meet the office, cafes, restaurants, bars and other big occasions, water (filter replacement frequency corresponding increase)
No comments:
Post a Comment