Use of PAC to remove chrominance in wastewater What's new? Use of PAC to remove chrominance in wastewater What's new? Coagulation decolorization is the use of polyaluminum chloride in wastewater removal of color, coagulation decolorization technology, low investment costs, equipment, small footprint, large capacity, is a commonly used decolorization technology. Inorganic coagulants include metal salts and inorganic polymer flocculants. Widely used metal salts are polyaluminum chloride and polyaluminum chloride; inorganic polymer flocculant is a new type of water treatment agent developed on the basis of the traditional metal salt flocculant, has the advantages of adaptability, no Poisonous, and can be doubled to improve the performance of relatively inexpensive and other advantages, has been the rapid development and widespread use. In addition to the use of polyaluminium chloride to remove the color of the wastewater, in fact, there are many ways: 1, adsorption and decolorization technology is to rely on the adsorption of adsorbent to remove the color. Commonly used adsorbents include renewable adsorbents such as activated carbon, ion exchange fibers and the like and nonrenewable adsorbents such as various natural minerals (bentonite, diatomaceous earth), industrial waste (cinder, fly ash) and natural waste (charcoal, Sawdust) and so on. At present, adsorbents for adsorption and decoloration mainly rely on physical adsorption, but ion exchange fibers and modified bentonites also have chemical adsorption. 2, chemical oxidation decolorization refers to the use of chlorine, ClO2, O3, H2O2, HClO4 and hypochlorite oxidation, under certain conditions so that the chromogenic groups in the wastewater fracture or change its chemical structure, so as to achieve The purpose of wastewater decolorization. 3, biological decolorization is the use of microbial enzymes to oxidize or restore colored molecules, destroy their unsaturated bonds and chromophores to achieve the purpose of decolorization. 4, electrochemical method is through the electrode reaction so that the wastewater purification. According to the electrode reaction mode, the electrochemical method can be subdivided into the internal electrolysis method, the electric flocculation and the electric float method, the electric oxidation method. The most famous method of internal electrolysis is iron filings coagulation. 5, In the field of wastewater treatment, the membrane separation method is to use artificial synthetic or natural polymer film, with external energy or chemical potential difference as the driving force, selective separation of pollutants in water, so that the wastewater purification technology. Removal of many of the colorimetric method of wastewater as wastewater treatment plant to choose which method to decide according to their actual situation, the current use of polyaluminium chloride to remove the color of the wastewater is still more extensive use. This information is provided by the filter source water purification Li from http://www.gyzhenyu.com/ finishing release, for transfer, please specify the address.