What meant by sewage and sullage?

Sewage refers to the wastewater generated from domestic, industrial, and commercial activities, which typically includes human waste, food scraps, and chemicals. Sullage, on the other hand, specifically refers to wastewater that comes from household activities such as bathing, washing dishes, and laundry, excluding human waste. Both sewage and sullage pose environmental and public health challenges, requiring proper treatment and disposal. Understanding the distinction helps in designing effective waste management systems.