The document discusses the process of waste management at Bishop Benziger Hospital in Kollam, India. It begins by categorizing hospital waste according to the WHO as infectious, sharps, pathological, pharmaceutical, radioactive, and other wastes. It then describes the sewage treatment plant and biogas plant used to treat liquid waste. The sewage treatment plant uses a three-stage process to treat sewage, while the biogas plant converts organic waste into biogas and manure. Proper waste management is important to protect patients, staff, and the environment from harmful pathogens and pollution.