The working principle of the slaughterhouse sewage treatment equipment
Slaughterhouse sewage treatment equipment is a type of equipment that specializes in treating the wastewater generated by slaughterhouses. Due to the high organic content and suspended solids of wastewater produced in slaughterhouses, effective treatment is required to avoid harm to the environment and human health.
The working principle of the slaughterhouse wastewater treatment plant is mainly based on physical, chemical and biological methods, through the combination of multiple treatment units, to achieve the effective treatment of wastewater. Here are some common processing units and what they do:
1.Grid: The grid is the first unit of the sewage treatment plant, which is used to remove large suspended solids and floating matter from wastewater. The grille usually consists of a set of metal strips arranged in parallel, and the gap size can be adjusted as needed. When the wastewater passes through the grid, larger suspended solids and floating matter are intercepted on the grid and then removed by regular cleanup.
2.Sedimentation tank: A sedimentation tank is a unit used to remove suspended solids from wastewater. Through the principle of gravity sedimentation, suspended solids gradually settle down in the sedimentation tank to form sludge. The supernatant gradually clears. The sedimentation tank can be designed into different types according to the need, such as vertical flow sedimentation tank, advection sedimentation tank, etc.
3.Bioreactor: The bioreactor is the core unit in the slaughterhouse wastewater treatment plant and is used to remove organic matter from wastewater. By cultivating anaerobic bacteria and aerobic bacteria, biological reactor ponds can be divided into anaerobic reactors and aerobic reactors. In the anaerobic reactor, organic matter undergoes a hydrolysis and acidification process under the action of anaerobic bacteria and is converted into small molecule organic matter and biogas;In an aerobic reaction tank, aerobic bacteria oxidize and decompose organic matter into water and carbon dioxide, while oxygen is supplied through an aeration device.
4.Secondary Sedimentation Tank: The secondary sedimentation tank is used to separate activated sludge and water from the biological reactor. In the bioreactor, the activated sludge is well mixed with the wastewater to form a mixture. Through the principle of gravity sedimentation, the activated sludge is separated from the water, the supernatant is discharged as the treated wastewater, and the activated sludge is returned to the biological reaction tank for further treatment.
5.Disinfection treatment: In order to eliminate pathogens in wastewater, slaughterhouse wastewater treatment equipment often also includes a disinfection treatment unit. There are many methods of disinfection, such as chlorination, ozone oxidation, ultraviolet irradiation, etc. Disinfection can effectively kill bacteria, viruses and other pathogens in the wastewater, ensuring that the treated wastewater meets the discharge standards.
In addition to the above-mentioned treatment units, the slaughterhouse sewage treatment plant also includes a number of auxiliary units and control units. For example, in order to stabilize the flow and concentration of wastewater, a regulating tank can be installedIn order to achieve automatic control and monitoring, automatic control systems and monitoring instruments can be set up.
In short, the working principle of slaughterhouse sewage treatment equipment is to combine a variety of physical, chemical and biological methods to treat slaughterhouse wastewater to reduce the content of organic matter, suspended solids and pathogens to meet the discharge standard. Through reasonable process design and equipment configuration, slaughterhouse sewage treatment equipment can effectively protect the environment and human health and safety.