IELTS Academic Writing task 1. How paper is recycled (process)

 

The diagram elucidates the intricate process involved in the production of recycled paper.

Overall, there are four distinct stages from the initial collection of used paper to the final creation of new paper rolls.

In the first stage, used paper is amassed and transported via a conveyor belt into a pulping machine. Within this machine, water and specific chemicals are introduced to disintegrate the paper into an unfiltered pulp. This mixture contains various contaminants and must be processed further to ensure the quality of the recycled paper.

Subsequently, the unfiltered pulp undergoes a filtration process. This step is crucial as it removes larger impurities, resulting in a more refined pulp. The filtered pulp is then moved on to the next stage, which focuses on thorough cleaning.

In the cleaning phase, the filtered pulp is subjected to a cleansing regimen involving water and soap. Air is incorporated to facilitate the separation of ink and other residual contaminants from the pulp. This mixture is then treated with additional water and chemicals to ensure that the cleaned pulp meets the required standards for recycling.

The final stage involves transforming the cleaned pulp back into paper. The pulp is spread evenly over a conveyor belt and passed through heated rollers. These rollers apply pressure and heat, effectively removing any excess water and solidifying the pulp into sheets of recycled paper. The end product is then rolled onto spools, ready for use.