Slaughtering sewage treatment plan and process
I. Introduction. With the increase in meat consumption, the slaughtering industry is growing day by day, however, the problem of slaughter sewage is also becoming more and more prominent. Slaughtering sewage contains a large amount of organic matter, ammonia nitrogen, suspended solids, pathogenic bacteria and other pollutants, if not directly discharged without treatment, it will cause serious pollution to the environment. Therefore, this article will introduce a slaughtering sewage treatment scheme and process, in order to provide reference for relevant enterprises and institutions.
Second, the treatment plan.
1.Pretreatment.
Slaughter effluent first needs to be pre-treated to remove large particles of suspended solids and impurities. The pretreatment includes steps such as coarse grid interception, grit tank sedimentation, and fine grid interception. Coarse grid interception mainly removes large suspended solids, grit tank sedimentation removes heavy substances such as sediment, and fine grid interception further removes smaller suspended solids and impurities.
2.Biochemical treatment.
Biochemical treatment is the core link of slaughtering sewage treatment, which mainly converts organic matter into harmless substances through the action of microorganisms. Biochemical treatment includes activated sludge method, biofilm method, anaerobic biological treatment and other methods. According to the characteristics and actual situation of slaughtering sewage, one or more of these methods can be selected for combined treatment.
3.Deep processing.
Advanced treatment refers to the further removal of pollutants in sewage on the basis of biochemical treatment. Advanced treatment includes filtration, adsorption, oxidation and other methods. Advanced treatment can effectively remove pollutants such as ammonia nitrogen and total phosphorus in sewage and improve the water quality of sewage.
3. Process design.
1.Sewerage systems.
The first step in slaughtering wastewater treatment is to collect sewage. A collection system is set up in the slaughterhouse to collect different sewage in a unified manner. The sewage collected includes slaughtering wastewater, cleaning wastewater, ground rinsing water, etc.
2.Pre-treatment system.
The effluent collected through the collection system enters the pre-treatment system. The pretreatment system includes steps such as coarse grid interception, grit tank sedimentation and fine grid interception to remove suspended solids and impurities from the wastewater.
3.Biochemical treatment systems.
The pre-treated effluent enters the biochemical treatment system. The biochemical treatment system adopts activated sludge method, biofilm method, anaerobic biological treatment and other methods for combined treatment to remove organic matter and ammonia nitrogen and other pollutants in sewage.
4.Advanced processing system.
The biochemically treated wastewater enters the advanced treatment system. The advanced treatment system uses filtration, adsorption, oxidation and other methods to further remove pollutants in the sewage. The quality of the wastewater after advanced treatment has been significantly improved.
5.Emission system.
The advanced treated sewage enters the discharge system, and after passing the test, it is directly discharged or used for farmland irrigation and other purposes. It should be emphasized that emission standards should be implemented in strict accordance with relevant regulations and standards.
IV. Conclusions. This paper introduces a slaughtering sewage treatment scheme and process, including pretreatment, biochemical treatment, advanced treatment and discharge. This scheme can effectively remove pollutants in slaughtering sewage, improve water quality, and realize the resource utilization of sewage. In practical application, the appropriate treatment method and process should be selected according to the specific situation to achieve the best treatment effect. At the same time, the monitoring and management of sewage should be strengthened to ensure that the discharge standards meet the requirements of relevant regulations and standards.