The activated sludge process (ASP) is responsible for eliminating inorganic and organic substances found in the wastewater using microbes. The microbes require oxygen for survival and respiration purposes, without adequate oxygen available, microbes will suffocate. Oxygen transfer into the ASP is expressed in terms of the volumetric mass transfer coefficient (K_La). In a climate-changing environment where temperatures continue to rise, the K_La in the ASP is improved despite oxygen being suppressed. The study aimed to analyze the rising climate temperatures and excessive airflow rates on K_La in the ASP during aeration. The results show that the highest (0.1899/h) and lowest (0.0107/h) K_La were determined at [...] and airflow rates of [...] respectively. The relationship between K_La, climate temperature (0.506^**), and excessive airflow rate (0.381^**) was [...].

This means that when excessive airflow rate and temperature were increased, K_La increased in the ASP. The rate of change influenced by climate temperature was positive 0.0064/h and the R² value was [...] implying that [...] % K_La is defined by climate temperature changes. Similarly, the rate of change influenced by excessive airflow rates was positive 0.0033/h and R² value was [...] implying that [...] % of K_La is defined by excessive airflow rates in the ASP. Applying excessive airflow rates improved K_La by 21.6%, whereas climate temperature improved K_La by 22.9% which was higher. Excessive airflow rates can be avoided, and rising climate temperatures can be allowed to improve K_La in the ASP.