However, the use of fragrance additives in plastics is not without challenges. Considerations regarding safety, regulatory compliance, and potential allergenic reactions must be taken into account. As consumer awareness regarding product safety grows, manufacturers are increasingly required to ensure that the fragrance compounds used are non-toxic and compliant with standards set by regulatory bodies. Additionally, the choice of fragrance must be made with care to avoid any adverse reactions, especially in products geared towards children or those used in sensitive environments.
The pH of wastewater can significantly impact the efficacy of treatment processes. Chemicals like sulfuric acid (H₂SO₄) or sodium hydroxide (NaOH) are employed to adjust the pH levels, ensuring optimal conditions for microbial activity during biological treatment stages. Maintaining an appropriate pH is crucial for maximizing the breakdown of organic matter and promoting the growth of beneficial microorganisms.
chemicals used in sewage treatment