What are the ways to use reclaimed water?

Reclaimed water, also known as "reclaimed water", refers to water resources recovered from non-traditional water sources such as sewage treatment plant effluent, industrial drainage and domestic sewage. After proper treatment, it can meet certain water quality standards and be reused in a certain range. Reclaimed water is generally treated by secondary treatment, and its water quality index is lower than that of drinking water in urban water supply, but higher than the discharge standard of polluted water allowed to be discharged into surface water. The annual sewage treatment capacity in Beijing has exceeded 654.38+0 billion m3, reaching 654.38+0.5 billion m3 in 2008, including 840 million m3 in urban areas, with a sewage treatment rate of 93% and 265.438+0 billion m3 in suburban areas, with a sewage treatment rate of 48%. The sewage utilization has increased from 265.438 billion m3 in 2004 to 600 million m3 at present, and reclaimed water has become an indispensable new water source in Beijing.

There are five ways to use reclaimed water:

Groundwater recharge: replenish groundwater sources to prevent seawater intrusion and land subsidence.

Industrial water: boiler water, material dissolution, water bath, cooking, washing, water conservancy exploitation, humidification, dilution, mineral processing, etc.

Agricultural water: breeding, seedling raising, ornamental plants, etc.

Urban water use: greening, toilet flushing, street cleaning, toilet flushing, concrete components and buildings under construction, fire fighting, etc.

Landscape water: leisure landscape water, wetland water and constructed wetland water.