The biological wastewater treatment market size is estimated to be USD 8.7 billion in 2020 and projected to reach USD 11.1 billion by 2025, at a CAGR of 5.1% from 2020 to 2025. Stringent regulations regarding the disposal of wastewater into the environment or for reuse, aging infrastructure, water scarcity & reusability of wastewater, rapidly growing population and...