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United States Water Reuse cited concern for drinking water sewage treatment

2015-06-05 By zhaozhao

Inevitable problems of sewage treatment for the city development.In China, secretly discharges of sewage pollution costs more expensive, so many businesses prefer to risk sneaking the sewage, have a direct impact on the lives of nearby residents.Well, in the United States, but also how they deal with sewage and water reuse carried it?

Wastewater reuse increasingly widespread.Meanwhile, back to the water as a legitimate alternative water sources in the United States being more widely available, has become an important part of urban water resources.

Development of wastewater reuse has an irreplaceable environmental and economic benefits.If the wastewater reuse has reduced sewage discharge, maintaining ecological balance, and enhance the stability and reliability of water supply and other social and environmental benefits into costing among,compared with other ways to expand the water supply, wastewater reuse has significant overall efficiency advantages.

United States municipal wastewater reuse in a wide range of uses, including non-potable uses the direct use and indirect use for drinking purposes.The use of recycled water from the point of view of the constitution, crop irrigation, groundwater recharge, landscape and ecological environment and water for industrial use,is currently most major use of wastewater reuse in United States town.The proportion of recycled water on Jim ˙ Rick example: “Located in San Jose sewage treatment plant, the proportion of recycled water can account for about 60%.”

The United States is the sewage treatment for drinking water.As we all know, clean water to the city consumes about half of the inflow into the sewer network and then enter the sewage treatment plant,and then the process returns to the natural environment. The traditional sewage treatment plant designed to sewage treatment to a certain standard, and then discharged into natural water bodies, to ensure that does not affect the environment or the impact on public health.

In many places, adequate supply of freshwater is becoming increasingly difficult,lack of water has forced cities long-distance water transfer, energy consumption is very high. For example, Los Angeles to be a lot of diversion required to meet the city. An alternative option is to discharge effluent of the sewage treatment is further processed to a level suitable for drinking.

Level of municipal wastewater treatment plant effluent treatment drinking isn't a new concept. Indirect approach has had to attempt to drink in many parts of the world. Such as Singapore's NEWater project, wastewater treatment plant effluent for a series of high-level processing,achieve the required standard of NEWater, into natural reservoirs, achieve the purpose of indirect potable.

More striking is that in some cities, such as San Diego, Los Angeles, Sacramento is considering the development of renewable water projects directly drinkable item to meet future water demands.This prompted a series of research projects the US water industry, including how to improve the reliability of the process, the protection of public health and psychological acceptability. A significant advantage of drinkable is water supply close to the user,no long-distance water transfer.This advantage is not available for drinking indirect, indirect drinking often require long distance water to the reservoir for storage,pumping over long distances requires a very high energy consumption.

One example is the Big Spring, Texas area,the local is a serious drought, drinking water is pumped from a distance of 100 km from a small reservoir, drinkable energy needs can save long distance by pumping energy consumption and make up.

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