Brewing wastewater treatment engineering technology is an important application technology in the current environmental protection field, aiming to solve the problem of a large amount of wastewater generated in the brewing process. With the continuous development of the brewing industry, the impact of the wastewater on the environment is becoming more and more serious, so how to effectively treat the brewing wastewater has become an urgent problem to be solved. This paper will introduce the principles, technical methods and application examples of brewing wastewater treatment engineering technology, and provide reference for research and practical application in related fields.
1. The principle of brewing wastewater treatment engineering technology.
The brewing wastewater treatment engineering technology is mainly based on physical, chemical and biological methods, through a series of treatment units, the harmful substances in the wastewater are converted into harmless or low-harm substances, so as to achieve the purpose of discharge standards or recycling. Among them, the physical method mainly removes suspended solids and impurities in wastewater by means of sedimentation and filtration; The chemical method is to convert the harmful substances in the wastewater into harmless or low-harm substances through oxidation, reduction, neutralization and other reactions; The biological method uses the metabolism of microorganisms to convert the organic matter in the wastewater into harmless substances.
Second, the method of brewing wastewater treatment engineering technology.
1.Physical processing methods.
Physical treatment methods mainly include precipitation, filtration, adsorption and other means. The precipitation method is to remove suspended solids and impurities in wastewater through the principle of gravity sedimentation; The filtration method is to remove suspended solids and impurities in wastewater through the interception of filter membranes or filter materials; The adsorption method is to use the adsorption effect of adsorbents to remove harmful substances in wastewater.
2.Chemical treatment methods.
Chemical treatment methods mainly include oxidation, reduction, neutralization and other reactions. The oxidation method is to oxidize the organic matter and reducing substances in the wastewater into harmless or low-harm substances through the action of oxidants; The reduction law is to reduce the oxidizing substances in the wastewater to harmless or low-harm substances through the action of reducing agents; The neutralization method is to adjust the pH value of wastewater through the principle of acid-base neutralization to make it meet the discharge standard.
3.Biological treatment methods.
Biological treatment methods mainly include activated sludge method, biofilm method, etc. The activated sludge method is to remove organic matter in wastewater by cultivating and domesticating activated sludge and using its adsorption and degradation effects; The biofilm law is to remove organic matter from wastewater by cultivating and domesticating biofilms, using their adsorption and degradation effects.
3. Application examples of brewing wastewater treatment engineering technology.
In practical application, the brewing wastewater treatment engineering technology can choose different treatment methods and processes according to the actual situation. For example, a brewing enterprise uses the process of physical precipitation + chemical oxidation + activated sludge method to treat brewing wastewater. Firstly, suspended solids and impurities in wastewater are removed by physical precipitation. Then, the organic matter in the wastewater is oxidized to harmless or low-harm substances through chemical oxidation; Finally, the organic matter in the wastewater is further removed by the activated sludge method to make it meet the discharge standard. The process has the advantages of good treatment effect, stable operation and easy operation, and has been widely used and promoted.
4. Conclusions and prospects.
Brewing wastewater treatment engineering technology is one of the important means to solve the problem of brewing wastewater. In practical application, different treatment methods and processes should be selected according to the actual situation to achieve the best treatment effect. In the future, with the continuous progress of technology and the continuous improvement of application demand, the brewing wastewater treatment engineering technology will be more mature and perfect, and make greater contributions to environmental protection and sustainable development.