With the rapid development of modern industry, city water and waste water increased sharply, water resources become increasingly tense, which has become a common problem faced by all countries in the world. In reality, the shortage of water resources, the sewage as renewable resources is the inevitable trend of development, be imperative popularization and application of water resource utilization technology.

Water resource is used as the renewable resources back to the proper position of city sewage deep treatment. Water treatment is the use of physical, chemical and biochemical methods to city sewage or sewage treatment, so as to meet certain quality requirements, can be reused in a certain range. As for the toilet, wash the ground, greening, and landscape water spraying etc.. Because of its water quality between water and water, so water.

A brief introduction to several water treatment technology

Reclaimed water treatment technology according to its mechanism can be divided into physical and chemical method, biochemical method and physicochemical biochemical method. Usually with reasonable combination of a variety of technology to wastewater treatment technology, which combine a variety of water treatment method of wastewater treatment, this is because a single water treatment method is generally difficult to achieve the requirements of the quality of reclaimed water. At present, the reuse process for the:
(1) biological chemical method
To adjust to raw water grille ponds, contact oxidation tank, sedimentation tank, ultrasonic automatic filter, ultraviolet disinfection, water
(2) physical and chemical method
To adjust to raw water grille ponds, flocculation sedimentation tank, ultrafiltration, ultraviolet disinfection, water
The ultrafiltration membrane separation technology to replace the filter unit in the process of precipitation.
(3) physicochemical biochemical method
The raw water, ponds, activated sludge, grid regulation ponds, ultrafiltration, ultraviolet disinfection, water (integrated)

The general principles of water treatment process selection is, when to wash, wash bath or ground for reclaimed water as water source, using physical and chemical method to meet the processing process can be. When the main kitchen, toilet flushing water and sewage water water treatment process, generally use biochemical method or biochemical, physicochemical combination. The physical method of general process of coagulation, sedimentation and filtration.