Ultrafiltration membrane structure symmetric and asymmetric division. The former is isotropic, no cortical porosity in all directions are the same, belongs to depth filtration; the latter has a more dense surface layer and to the underlying structure of the main finger Beijing integrated water purification equipment, the surface layer having a thickness of 0.1 microns or less, and having orderly arranged micropores, substrate thickness of 200 to 250 microns below the surface of the filter. Industrial ultrafiltration membrane used is generally asymmetric membrane. Ultrafiltration membrane materials are cellulose and its derivatives, polycarbonate, polyvinyl chloride, polyvinylidene fluoride, polysulfone, polyacrylonitrile, polyamide, polysulfone, sulfonated polysulfone, cross-linked polyvinyl alcohol, modified acrylic polymers and so on. Ultrafiltration using ultrafiltration membrane pressure difference driven membrane filtration method for ultrafiltration. Most ultrafiltration membrane from cellulose acetate fibers or the like of the polymer material and its performance was obtained. Most suitable for separating solutes in solution and enriched, but also other separation techniques commonly used in the separation of the colloidal suspension is difficult to complete, and its field of application is increasing. Welcome Jun Xin environmental technology products! Replacement of standard equipment on the premise of integration to meet the requirements of the manual, the membrane of life is usually more than 3 to 5 years. However, in the case of long-term use and repeated cleaning, performance will decrease. Sometimes the use of improper or untimely Beijing cleaning sewage integration equipment manufacturers, can also cause irreversible fouling, membrane performance can not be restored. Determine whether the membrane is mainly based on the need to replace the water production, water quality and film production pressure, including:? Membrane seriously damaged, beyond repair; membrane repair after repeated after water production decline is too large to meet the water production? requirements;? can not still can not recover after repeated cleaning performance, water production can not meet the requirements;? membranes from fouling and put into operation on a serious, pressure rises too fast, cleaning frequency is too high, resulting in unacceptable frequent outages and drugs fluid consumption. Beijing sewage integration equipment, Jun Xin environmental technology, the integration of equipment supplied by Nanjing Environmental Protection Technology Co., Ltd. Jun Xin. Nanjing Environmental Protection Technology Co., Ltd. Jun Xin (www.jxhb880.com) (www.jxhb880.com) is a leader in Nanjing, sewage treatment equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. Jun Xin in environmental technology leadership with the staff warmly welcome all inquiries negotiations to create Chun-hsin environmental technology a better future.