Concerns relating to the negative environmental impacts of anaesthesia are increasing, and in recent years, there has been an environmentally motivated trend towards greater use of propofol-based total intravenous anaesthesia. Consequently, the environmental burden of propofol waste and disposal, particularly into wastewater, has gained attention. Current literature reporting levels of propofol in wastewater are scarce and the threat this presents to the environment is unclear. We review the regulatory requirements for conducting an environmental risk assessment, with a focus on the process for analysing whether drugs or drug metabolites cause harm to aquatic species. Furthermore, we present a profile for the aquatic toxicity of propofol based on available data and discuss the implications of this for future practice.

This technical guideline is applicable to disinfection of wastewater and wastes of medical organizations during COVID-19 outbreak. The purpose of the guideline is to eliminate various pathogenic bacteria, fungi, and viruses, effectively block the virus transmission pathways, and guide medical organizations to carry out the prevention and control of COVID-19.
本技术指南从消毒工艺、消毒效果评价和排放要求三个方面进一步提升了医疗机构污水和污物消毒的技术要求，适用于新冠肺炎疫情期间综合性医院、病例定点医院、医学观察区污水和污物的卫生管理。.

Cultivation of oleaginous microorganisms on wastewater provides alternative biofuel options while also acting as a remediation technique for alternative wastewater treatment. This chapter describes guidelines and methods for the production of oleaginous microorganisms-with a focus on microalgae-using wastewater as a growth medium while considering a variety of general challenges for both lab- and industrial-scale production. Cultivation techniques described here range in scale from microplates with 10-mL working volumes, up to multigallon, industrial-scale microorganism cultivation, with a focus on microalgae. This chapter includes guidelines for the preparation of wastewater and selection of oleaginous microorganisms combined with methods for the production of oleaginous microorganisms cultivated using wastewater.