New Disinfectant for Greywater Systems: Evaluation of Antibacterial Activity

In favourable environments, micro-organisms can persist or proliferate within biofilms that coat the insides of pipes in greywater systems over extended periods. This study aimed to develop an innovative disinfectant that adheres strongly to poly(vinyl chloride) (PVC) pipes and exhibits superior antibacterial properties. Standard tests and protocols were used to evaluate its effectiveness against biofilms during and before formation. The results showed that the new disinfectant was highly effective against Staphylococcus aureus, Enterococcus hirae, Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa on PVC surfaces. Notably, its performance surpassed that of commonly used disinfectants. These results suggest that the new disinfectant could effectively and sustainably disinfect greywater system piping, reducing the need for excessive usage of disinfectants.