Dalian's sewerage treatment is a very rigorous and meticulous process, requiring specialized technology and equipment to deal with, and also need to go through a number of treatment and filtration, in order to treat the sewage into a high level of "clean water".
First of all, sewer treatment in Dalian will be physical treatment, this process is the most basic treatment process. This process is the most basic of all. The main purpose is to separate the soluble and insoluble impurities in the wastewater, such as sand and stones. This type of treatment is relatively simple and only requires filtration and sedimentation.
Secondly, sewer treatment in Dalian also requires chemical treatment. This treatment is used to remove pollutants by adding chemicals as well as utilizing the principle of chemical reaction. This method separates the pollutants in order to meet water quality standards.
Finally, biological treatment is also required. Some microorganisms are introduced inside the sewer treatment equipment in Dalian, and these microorganisms can degrade and decompose the pollutants. This type of treatment is more suitable for removing organic pollutants such as COD and BOD, and it can break down the organic matter in the sewage into carbon dioxide and water, and ultimately bring the water quality up to the national standard.
In short, sewer treatment in Dalian is a complex process that requires a combination of treatments to achieve clean results. Economy and efficiency also need to be taken into account when treating sewage, and the discharge of pollutants needs to be minimized to safeguard the environment in good condition.