PAC relatively good point. The following reasons: 1. Most domestic water companies are using PAC, such as low Beijing, Tianjin, Shanghai, Harbin, Zhengzhou and other cost of their use, processing small pipe corrosion, post-maintenance and low cost . 2. The water remaining aluminum ion is very small, in the normal life of the body does not pose a potential hazard. If there is damage, then there are so many aluminum utensils in the kitchen, would not be a human life? 3. PFS by sulfuric acid as the reaction medium, trivalent iron and aluminum oxide as the main factor in the treated water, its use is more suitable for low temperature, low turbidity waters. Such waters do not have the broad, generally concentrated in the north and northeast regions of local provinces. The PAC can make up for this deficiency. Molecular mass of PFS and PFS activity of molecular structure and shape and brought the group has an impact. In general, the molecular weight, the higher flocculating activity; linear high molecular flocculating activity, Zixing PFS, branched molecules or more cross-linking, flocculation worse; PFS-producing bacteria in culture post-polymerization ferric export, cell surface vegetables water-enhanced PFS activity generated higher. Surface structure and charge water treatment colloid ions also have an impact on the flocculation. Some reports noted that cationic water, especially Ca2 +, Mg2 + can effectively reduce the presence of negatively charged colloids promote "bridging" form. In addition, the presence of high concentrations of Ca2 + PFS also protect from degradation enzymes. PFS flocculation wide range of microbes, flocculation activity, and the role of extensive conditions, PFS quality, mostly from ionic strength, pH and temperature, it can be widely used in sewage and industrial wastewater treatment. Microbial PFS efficient, safe, does not pollute the environment advantage in the pharmaceutical, food processing, bio-product separation and other fields have great potential value. Zixing PFS PFS spray _ _ flocculant (high merchant) provided by the Henan water purification Material Co., Ltd. Spirit. Spirit Henan water purification Material Co., Ltd. (www.gyssjs.com) located in Gongyi City, Henan Province, North Industrial Park Yamaguchi. Scraps and development in the wave of market economy, the current Prime water has a high profile in the water treatment chemicals, and enjoy a good reputation. Spirit has made water the whole network business alliance certification, marking our service and management level has reached a new height. Saatchi water all employees willing to work with all people of insight and common development, for a better future.