Water treatment agent (PAC) is a kind of inorganic flocculant widely used, but its dosage is large. If polyacrylamide and water treatment agent cooperate, the dosage of PAC will be greatly reduced. And it can achieve the characteristics of good treatment effect and low cost. The chroma of dyeing or dye wastewater after biochemical treatment is often difficult to meet the standard. The effect of deep decolorization by polyaluminum chloride is better.

At present, most of the research results in the society are that azo dyes are more easily decolorized by ozonation. For example, for 0.1mol/l direct red 2S and direct black 2S, the oxygen demand for ozone is 80 mg / L and 130 mg / L, respectively. Ozone oxidation can also be combined with other treatment technologies. If FeSO4, Fe2 (SO4) 3 and FeCl3 are coagulated and then treated with ozone, the decolorization efficiency of direct and acid dyes can be increased by 25-40, and that of basic and reactive dyes can be increased by 10.

Customers who have contacted polyaluminum chloride decolorizer for many times still have some doubts about its use. Polyaluminum chloride is also a very high-quality decolorizing oxidant product. Due to the influence of its chemical components, polyaluminum chloride has a high decolorization rate for water-soluble dye wastewater such as reactive, direct, cationic and acidic dyes; it also has good decolorization effect for disperse dyes 。 Ozone plus ultraviolet radiation or ionizing radiation can also improve the oxidation efficiency. Due to its wide adaptability to dyes and high decolorization efficiency, polyaluminum chloride can rapidly decompose into O2 in the solution and air at the same time of reduction products of O3 in wastewater and excess O3, which will not cause secondary pollution to the environment.

At present, the general water treatment agent (PAC) is used as coagulant, and the decolorization effect of polyaluminum chloride on dye wastewater is good. When the dosage of PAC is 0.05%, the decolorization effect of five kinds of dyes is good. Polyaluminum chloride has better decolorization efficiency for suspended coatings and vat dyes, followed by sulfide dyes and naftol dyes, and poor decolorization effect for water-soluble reactive dyes. In addition, increasing the dosage of PAC can improve the decolorization effect.

The article comes from the manufacturer of sewage treatment agenthttp://www.viliya.cc/