The Process and Method of Efficiently Treating High Salt Wastewater Projects

Nowadays, the shortage of water resources and water pollution have seriously constrained China's economic development and social progress. The treatment and discharge of high salt wastewater cause serious water pollution, especially in industrial wastewater containing salt, which also contains a large amount of toxic and difficult to solve organic compounds. In industry, seawater is used for boiler cooling, and in many industries, wastewater is discharged through the substitution of seawater

For the treatment of high salt wastewater with high content, we adopt the following methods:

1. Lime soda ash softening method is one of the technologies used in high salt wastewater applications, which can effectively reduce the concentration of components and suspended solids in water, and allow some water treatment agents to continue to be recycled in the system after softening process.

2. Distillation desalination is the most primitive desalination method, and the current distillation desalination technology for high salt wastewater is basically developed based on seawater desalination technology. The advantage of this method is that it has a simple structure and easy operation to obtain high-quality fresh water.

High salt wastewater can also be treated by biological methods to reduce its pollution. A salinity regulating tank should be added, and the stability of salinity should be adjusted during design. Conductivity monitoring devices can be installed at the inlet and outlet of the regulating tank to strengthen online control of salinity and prevent salt shock from causing treatment system failure. To reduce the load of sludge and decrease the rate of biodegradation due to reduced salinity, a load design is necessary. Increasing the concentration of sludge leads to poor flocculation performance and severe sludge loss in the treatment of high salt wastewater. Increasing the residence time of the clarification tank can affect the flocculant due to the influence of high concentration salt, so prolonging the residence time is beneficial for the sedimentation of sludge.