China’s water resources are spatially distributed with temporal variations. Water resources in China are geographically divided into nice major river basins, including Yangtze, Yellow (Huang), Hai-Luan, Huai, Song-Liao, Pearl, Southeast, Southwest, and Northwest (Figure 1). Accounting for inter-year variation, the total volume of annual internal renewable water resources in China, on average, is estimated at approximately 2,812 billion m3 per year, which includes both surface water and groundwater.
China’s surface water is recharged mainly (around 98%) by precipitation. While generating the spatially uneven distribution of water resources, the spatio-temporal pattern of precipitation further reinforces the spatial distribution of water by introducing a spatially heterogeneous temporal variation. Affected by a strong monsoon climate, the annual average precipitation in China gradually decreases in a spatial gradient from more than 2000 mm on the southeastern coastline to usually less than 200 mm at the northwestern hinterlands. The ratio of maximum to minimum annual precipitation recorded may exceed 8 in northwestern China, but only ranges between 2 and 3 or less than 2 in southern and southwestern regions. In most areas of the country, precipitation within four consecutive months at maximum approximately accounts for 70% of its annual total amount. This spatio-temporal pattern of precipitation indicates varying risk of floods and droughts across the country.
The World Bank reports that at least 80 countries have water shortages and 2 billion people lack access to clean water. More disturbingly, the World Health Organization has reported that 1 billion people lack enough water to simply meet their basic needs, unfortunately in many countries water is scarce or contaminated.
Pure Aqua provides wide range of filtration and economical solutions based on the China’s water resources.
China’s main water resources are:
Surface water “is water from river, rain water, lake or fresh water wetland, which can be treated using different methods, such as Ultrafiltration Systems, Media Water Filters, Brackish Water RO.
Desalination can be used for water from ocean, or sea source, which can be treated using Sea Water Reverse Osmosis Systems; Desalination Systems
Ground Water or brackish water is from water located in the pore space of soil and rock “Borehole well”, which can be treated using Reverse Osmosis Systems, Media Water Filters, Chemical Dosing, UV Sterilizers.
Government water supply, which could have high level of hardness or high level of chlorine, can be treated with Water Softeners, Media Water Filters
The water purifier is capable of eliminating large amounts of salts, minerals, and other impurities found in water by adding excessive pressure to highly concentrated saline solutions, permitting water molecules to flow through a partially porous membrane then moving it into the lower concentrated solution. Salts, minerals, and other impurities are rejected and thrown into the brine stream then into the drain. This is when clean, purified water emerges and collected on the lower end of the membrane. Commercial RO machine can be used in many different applications, such as drinking water, boiler feed, car wash, cooling towers, process water, restaurants, hospitals… etc
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