【Overview】

As the sewage water, after appropriate treatment was made after mixed water, the water quality indexes in between Sheung Shui and water, as water, appropriate technology called water technology. The treated water can be used to flush toilets, garden irrigation, road cleaning, city fountains. For lack of fresh water resources, severe shortage of urban water shortage areas, the use of technology can not only save water in the water, but also make water sound is an important way of controlling water pollution, combined with recent developments of the current growth, urban water consumption dramatically Rise, increased pollution, leading to severe water shortages the city. Therefore, water reuse treatment technology is a long time China's current and future focus on the promotion of new technologies, new processes.

【In water quality】

Living in water as mixed water, the water quality must meet the following basic conditions: (1) Health on the safe, reliable, non-hazardous substances, the main measure of a coliform, total bacteria count, the amount of suspended solids, biochemical oxygen demand, chemical consumption Oxygen, etc.; (2) no unpleasant feeling on the skin, the main indicators to measure turbidity, color, odor, such as surfactants and oils; (3) does not cause equipment, pipes and other serious corrosion, structural and non-The difficulties caused by maintenance and management, the main measure of a PH value, hardness, dissolved solids and so on.

 At present, China has no unified water reuse standards, when in the water reuse water quality standards generally refer to the relevant industry standards or local standards for water reuse, water used for general landscape ecology should be consistent with "reclaimed water reuse for landscape water Water quality standards "(CJ/T95-2000), miscellaneous water for life should be consistent with the Ministry of Construction, " Miscellaneous Domestic Water Quality Standards "(CJ/48-1999), used for industrial cooling water should be consistent with the "Industrial Recirculating Water Cooling Design Specification "(GB/T50102-2003).

【Solutions】

1、【Water reuse process】：

    In order to meet the sewage treatment water into the water quality standards are generally required to deal with three phases:
   (1) pretreatment of the grill and adjust the phase of the main pool of the two processing units, main role is to remove the solid impurities in water and uniform water quality.
   (2) The stage is the main processing water reuse in the key way, the main role is to remove dissolved organics in wastewater.
   (3) the stage of post-treatment disinfection based mainly on the water depth treatment. To ensure that water reaches the water of standards.