| Message: | Dispersant anionic polyacrylamide APAM in pulp and papermaking industryThe content of COD was high, the content of BOD was high, the content of SS was high, and the chroma was high in Printing and dyeing waste water,this kind of waste water is treated by biochemical method and can be discharged up to the standard.In the textile printing and dyeing, chemical industry, papermaking, ferrous metal smelting and power industry in various industries,TCOD emissions of textile printing and dyeing industry in the first place.At present,the average with 100 meters of cloth wastewater produced by 4 - 5 tons in China.With the increase of variety of color,the dyeing and finishing process is continuously updated, some of which lead to the aggravation of pollution.Laboratory personnel of Boyuan in the dyeing wastewater decolorization experiment by adding flocculant flocculation(polyacrylamide),coagulant aid (polymeric aluminum chloride or ferric chloride),the colloid can collide with each other under a certain external force,the formation of larger floc particles, thereby removing contaminants are adsorbed.Textile printing and dyeing enterprises commonly used processing facilities:vertical flow sedimentation tank, inclined tube sedimentation tank, radial flow sedimentation tank, flat flow sedimentation tank ect.Flocculation and sedimentation in the treatment of printing and dyeing wastewater,generally remove 40 to 50% of the CODcr,60%-80% of chroma.At present, most of the treatment of printing and dyeing wastewater treatment of polyacrylamide flocculant that is PAM,it is compared with the traditional coagulant PAC (Polymeric aluminum chloride)and PFS(Polymeric ferric sulfate),polyacrylamide flocculant has the advantages of high coagulation and sedimentation rate, small size of sludge, low residual amount of treated wastewater and low treatment cost.Non ionic polyacrylamide model is not universal,the effect is different.If you buy polyacrylamide is also treated dyeing wastewater,please dial ......url:http://www.boyuanpam.com |
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