The sludge dewatering agent for printing and dyeing plants usually uses polyacrylamide for printing and dyeing plants. With the rapid development of the textile dye industry, there are tens of thousands of dyes used in the world. The sludge produced by sewage treatment in printing and dyeing plants has a different composition from municipal sewage. Printing and dyeing sludge generally has higher inert substances.
Polyacrylamide for printing and dyeing plants
For example, the sludge produced by jeans washing and bleaching wastewater has a high sand content, while the organic matter and pathogenic bacteria content is less than that of urban sludge, and its calorific value is also lower. Generally, the content of heavy metals is higher than that of urban sludge. In addition, the sludge produced by the printing and dyeing industry itself is not the same due to the use of raw materials, product varieties, product processing methods, etc. The content of sulfide in enterprises using sulfur dyes is bound to be higher.
Polyacrylamide for sewage treatment in printing and dyeing plants
Therefore, the selection and dosage of chemicals in printing and dyeing sludge treatment should be treated differently according to the different sources of sludge, from the scale of sewage treatment, sludge output, source of chemicals, dosage of chemicals, and operating costs. Polyacrylamide for printing and dyeing plants
There are many flocculants used in sludge treatment, including aluminum sulfate, ferric chloride, ferrous sulfate, polyaluminum chloride, polyaluminum sulfate, polyacrylamide, etc., and various agents have their scope of application and advantages and disadvantages. The company uses different chemicals in each process of printing and dyeing sewage treatment, but for sludge treatment, it is mainly considered from the following aspects:
①Wide sources of medicine and easy to buy;
②The price is cheap;
③Wide range of pH application;
④The agent is less corrosive;
⑤ Good flocculation effect and low consumption;
⑥ The filtrate returns to the sewage treatment system without negative impact.
Therefore, we choose polyaluminum chloride and polyacrylamide for sludge treatment. Polyacrylamide is generally divided into cationic, anionic and nonionic. The choice of ion polyacrylamide depends on the characteristics and treatment methods of the sludge. Go for trial screening.
Dongguan Shouxin Chemical Co., Ltd. is a professional polyacrylamide supply chain resource integration company, mainly including cationic polyacrylamide, anionic polyacrylamide, non-ionic polyacrylamide, zwitterionic polyacrylamide, four major products, free on-site sampling , Experimental selection, to provide you with solutions with better effects and lower prices.