I. Introduction. With the rapid development of biomedical research, animal laboratories have made great contributions to human health, but also generated a large amount of wastewater. If this wastewater is not properly treated, it will pose a serious threat to the environment and human health due to the potential harmful substances such as viruses, bacteria, parasites, drug residues, and heavy metals. Therefore, how to properly dispose of these laboratory wastewater has become an important issue that we must face. 2. The wastewater from the animal laboratory is mainly the waste liquid generated in the experimental process, the feeding excrement of experimental animals, and the washing water used for cleaning and disinfection. These wastewaters contain a large amount of organic matter, and may also contain unknown harmful chemicals and microorganisms, which are highly polluting and harmful. 3. ChallengesThe challenges faced in the treatment of animal laboratory wastewater are mainly the complexity and uncertainty of its composition. Wastewater may contain unidentified and ununderstood hazardous substances, such as bacteria, viruses, parasites, drug residues, etc., which undoubtedly increases the difficulty of treatment. In addition, the amount of wastewater generated can also surge in a short period of time, putting a huge strain on the treatment system.
Fourth, solution 1Pretreatment: Pretreatment is an important part of wastewater treatment, including suspended solids separation, large particulate matter crushing, pH adjustment and other steps. Through pretreatment, most of the suspended solids and harmful substances in the wastewater can be effectively removed, reducing the burden for subsequent treatment. 2.Biological treatment: Biological treatment is a method of degrading organic matter using microorganisms. In the biological treatment process, microorganisms convert organic matter into carbon dioxide and water, thereby purifying wastewater. 3.Advanced treatment: Advanced treatment is the further treatment of wastewater after biological treatment to remove trace harmful substances and nutrients in wastewater. 4.Sterilization: Disinfection is a critical step in ensuring the safety of wastewater. Commonly used disinfection methods include ultraviolet disinfection, ozone disinfection, chlorine disinfection, etc. Through disinfection treatment, it can effectively kill harmful microorganisms in wastewater and ensure that wastewater meets discharge standards. 5.Reasonable planning and management: Reasonable planning and management is an important guarantee to ensure the normal operation of the wastewater treatment system in animal laboratories. A sound wastewater management system should be established to strengthen the management of the whole process of wastewater generation, treatment and discharge, so as to ensure the stable operation of the wastewater treatment system.