+86-532-88122257Introduction to commonly used sewage treatment equipment and methods
How much do you know about some common sewage treatment equipment and methods? The main methods of sewage treatment: sewage treatment can be divided into four categories according to its working principles: physical method, chemical method, physical chemical method and biological treatment method.
1.Physical method
Physical sewage treatment uses physical effects to separate the main suspended pollutants in sewage without changing the chemical properties of the water during the treatment process.
2. Chemical method
The chemical treatment method of sewage is to add chemicals to the sewage and use chemical reactions to separate and recover the pollutants in the sewage, or convert them into harmless substances.
3. Biological law
The biological treatment method of sewage uses the metabolic function of microorganisms to degrade and transform organic pollutants in dissolved and colloidal states into harmless substances, so that the sewage can be purified. The process of biological treatment can be divided into two categories according to the types of microorganisms involved and the oxygen supply conditions, namely aerobic biological treatment and anaerobic biological treatment.
4.Physical and chemical methods
The method of treating or recycling industrial wastewater using extraction, adsorption, ion exchange, membrane separation technology, gas stripping and other operating processes can be called physical and chemical methods. Before industrial wastewater is treated or recycled using physical and chemical methods, it generally needs to be pretreated to remove suspended solids, oils, harmful gases and other impurities in the wastewater as much as possible, or to adjust the pH value of the wastewater in order to improve the recovery efficiency and Reduce losses.
5.Constructed wetland method
The use of constructed wetlands to treat sewage is an ecological and physiological method that has only emerged in developed countries in the past decade. It is to artificially mix soil and filler (such as gravel, etc.) to form filler in depressions with a certain aspect ratio and bottom slope for the purpose of treating sewage. The bed allows sewage to flow on the surface in the filler gaps of the bed, and aquatic plants with good performance, high survival rate, strong water resistance, long growth cycle, beautiful appearance and economic value are planted on the surface of the bed to form a plant ecology system. Sewage treatment adopts artificial underflow wetland treatment technology. The constructed wetland treatment system can fully utilize the production potential of land resources, prevent water pollution, and obtain good benefits of sewage treatment and resource utilization, which is of great significance for protecting the natural ecological environment.
Sewage treatment equipment can be divided into integrated sewage treatment equipment and air flotation equipment. For more information about sewage treatment equipment, please check the product introduction section of this website.
