Due to the different levels of contradictions and gaps between the water quality of natural water sources and the requirements of users for water quality, we must use natural water purification technology and use feasible scientific water treatment methods to turn natural water containing various impurities into Water that meets the requirements of life or production.

The following is a brief introduction to some common water treatment methods:
1. clarify:
The clarification treatment of water is mainly suspended solids and colloidal substances in raw water, which reduces the turbidity of these substances in raw water. The specific process can be further divided into: coagulation, sedimentation and filtration.
1.1 Coagulation Put the agent (purifying agent) into the raw water, so that the agent and the raw water can be thoroughly mixed and reacted (that is, the coagulation process is carried out in the reaction tank), so that the suspended solids and colloidal impurities in the water form large particles which are easy to precipitate. Flocs, commonly known as "矾花".
1.2 Precipitation The raw water entrained in the coagulation process entrains large particle flocs into the sedimentation tank at a certain water flow rate, and gravity separation is carried out through the sedimentation tank, and the important impurity particles in the water are sedimented to the bottom of the sedimentation tank.
The above purification process can also be completed by a clarification tank which is a treatment structure integrating reaction and precipitation. 1.3 After the raw water is filtered, the turbidity of the water is greatly reduced, but the sump flows into the pool through the sump. The precipitated water in the still remains some fine impurities, and the particulate turbidity in the filter (such as quartz sand, anthracite, etc.) intercepts fine impurities in the water, so that the turbidity of the water is further reduced.
When the raw water turbidity is low, the raw water after the input of the chemical agent can directly enter the filtration treatment without undergoing a treatment process such as coagulation or sedimentation.
The above clarification process (coagulation, precipitation and filtration) not only reduces the turbidity of the raw water, but also is effective for the removal of chromaticity, bacteria, and viruses.
For high turbidity raw water, the grit chamber or pre-sinking tank is usually used to remove the larger particle size of the sediment particles.
2. Disinfection When the raw water is coagulated, precipitated, and filtered, it flows into the clear water tank through the pipeline. It must be disinfected. The method of disinfection is to put chlorine, bleach or other disinfectant into the water to kill the pathogenic microorganisms in the water. . There are also methods for disinfecting water by means of ozone or ultraviolet radiation.
In addition to the above two types of water treatment methods, other common treatment methods include deodorization, deodorization, iron removal, softening, desalination and desalting.
According to different raw water quality and requirements for water quality after treatment, the above various treatment methods may be used alone or in combination of several treatment methods to form different treatment systems. In the purification of water, there are usually several treatment methods used in combination.