Question

write a short report on waste water management ​

Answer 1

Answer:

I'm too lazy. sorry, and thanks for the free points.

Answer 2

                                      Waste water management

Introduction

Wastewater treatment is a process used to remove contaminants from wastewater or sewage and convert it into an effluent that can be returned to the water cycle with acceptable impact on the environment, or reused for various purposes. The goal of wastewater management is to clean and protect water. This means that water must be clean enough so that it can be used by people for drinking and washing, and by industry for commercial purposes. It also must be clean enough to release into oceans, lakes, and rivers after it has been used. Wastewater treatment, collection and discharge are essential to protect human health, the environment and surrounding water quality. As sewage enters a plant for treatment, it flows through a screen, which removes large floating objects such as rags and sticks that might clog pipes or damage equipment. After sewage has been screened, it passes into a grit chamber, where cinders, sand, and small stones settle to the bottom. There are two types of wastewater. Blackwater contains human waste and harmful pathogens. Greywater consists of water discharge from sources such as showers, sinks and washing machines. Mud and sand settle in a tank called a grit chamber. Later, this material, known as grit and screenings, is taken to a landfill for environmentally safe disposal. The sewage then flows to primary settling tanks where up to 60% of the solids in the waste stream settle out as a mixture of sludge and water.