1. China's non-conventional water utilization direction mainly includes ().

China's non-conventional water utilization direction mainly includes landscape environmental water, industrial water, urban non-potable water, agricultural water, forestry water, groundwater recharge water.

Including, landscape environmental water according to use can be divided into ornamental landscape environmental water, recreational landscape environmental water and wetland environmental water; industrial water according to use can be divided into cooling water, washing water, boiler water, process water, and product water; urban non-potable water, including flushing toilets, vehicle flushing, urban greening, road sweeping, and building construction water.

Agricultural water, forestry water mainly refers to agricultural and forestry irrigation water; groundwater recharge water can be used for groundwater recharge, to prevent seawater intrusion, to prevent ground subsidence and so on.

Unconventional water sources:

Unconventional water sources are distinguished from water resources in the traditional sense (surface water, groundwater), mainly rainwater, reclaimed water, desalinated seawater, mine water, brackish water, etc., which is characterized by the fact that it can be utilized or reclaimed after treatment, and to a certain extent, replace conventional water resources.

China's water resources are broadly divided into 2 categories, one is called conventional water sources, also known as traditional water sources, usually refers to surface and underground water resources, such as rivers and groundwater; the other is called unconventional water sources, also known as non-traditional water sources, different from the traditional surface water supply and underground water supply water sources, generally refers to seawater, brackish water, reclaimed water, rainwater, mine water, and other 5 types of water sources.

As for the other categories are divided into traditional conventional water sources or unconventional water sources, in recent years, the relevant departments and experts have been controversial, we will discuss later, but usually these five categories of water sources as the main object of unconventional water research.