A medium-sized papermaking enterprise has long been troubled by the problems of papermaking wastewater treatment and paper quality improvement. During the production process, the white water circulation system is prone to microbial growth and scaling due to fiber and filler residues, resulting in a decrease in paper uniformity and an increase in the breakage rate; the discharged wastewater faces environmental pressure due to excessive COD.
Zibo Aixiang Industry and Trade's combination of anionic polyacrylamide and inorganic coagulant (polyaluminum chloride) has become the key to breaking the deadlock. At the front end of white water reuse, polyaluminum chloride neutralizes the charge and initially condenses fine fibers, and anionic polyacrylamide takes over to build tight flocs. After precipitation and filtration, the clarity of white water is greatly improved, and the recycling rate jumps from 60% to 90%, which greatly reduces the use of fresh water and reduces energy consumption. In the treatment of discharged wastewater, the two work together, the organic matter is thoroughly flocculated and settled, COD is stably controlled below the emission standard, and the discharge of wastewater per ton of paper is reduced by more than 30%.
The workshop supervisor gave a delighted feedback: "Aixiang products have enabled us to achieve a win-win situation of environmental protection and benefits. The defective paper rate has been reduced, the equipment maintenance cycle has been extended, and the production cost has been reduced. At the same time, environmental protection standards have been met, and the company's green transformation has been solid and powerful."
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