What are the precautions for biochemical treatment of wastewater?

The biochemical cultivation process of wastewater is an intricate task, with its theoretical foundation spanning multiple disciplines such as physics, inorganic chemistry, organic chemistry, microbiology, and fluid mechanics. Despite the nearly century-old history of the earliest activated sludge process, many theories remain unresolved in academia. Therefore, in the biochemical treatment process of wastewater in this project, operators and managers are required to continuously explore and practice during the biochemical cultivation process based on in-depth theoretical research and in combination with the specific situation of the company's wastewater. Under the premise of ensuring the system operates normally and the wastewater meets emission standards, they are expected to enhance their theoretical depth, enrich their practical experience, and build up their technical reserves.
Wastewater biochemical treatment commissioning primarily involves the cultivation of microorganisms. Based on the oxygen requirements of microorganisms, it can be divided into aerobic treatment, facultative treatment, and anaerobic treatment; according to the growth form of microorganisms, it can be classified into activated sludge process and biofilm process; according to the form of wastewater and microorganisms, it can be categorized into fully mixed type, sequencing batch type, etc.; and according to its reactor form, it includes even more types. Based on the combination of theory and existing wastewater treatment engineering practice, we have organized the influencing factors, monitoring methods, and control parameters in the process of wastewater biochemical treatment.
Temperature plays a crucial role in the biochemical cultivation process. Currently, although the wastewater treatment project of this project has not yet achieved the level of temperature control for the biochemical system, the measurement and analysis of temperature in various biochemical reaction systems and operational stages still play a guiding role in the acclimation and cultivation process of biochemical sludge. It can provide a basis for explaining various phenomena in the biochemical cultivation process and help management and operation personnel make correct and timely judgments on system operation and management. Temperature greatly affects the activity level of microorganisms in activated sludge (including anaerobic, facultative, and aerobic), and has an impact on factors such as dissolved oxygen and aeration rate, as well as on the biochemical reaction rate. Different types of microorganisms have different temperature ranges for growth, approximately from 5°C to 80°C. Within this temperature range, it can be divided into the lowest growth temperature, the highest growth temperature, and the optimal growth temperature. Based on the temperature range that microorganisms adapt to, they can be divid