Municipal wastewater treatment, due to its significant water quality fluctuations, high treatment complexity, and large volumetric variations with cyclical patterns, requires the use of multi-stage treatment processes involving physical and biochemical methods. This ensures achievement of compliance with discharge standards and resource recovery, thereby yielding significant environmental and social benefits.

Starch wastewater, with high organic content and good biodegradability, is often treated using an anaerobic + aerobic system. This process effectively removes pollutants and generates significant amounts of clean energy in the form of biogas and regenerable resource granular sludge, achieving a win - win situation for environmental protection and economic benefits.

Pharmaceutical wastewater treatment, with its complex water composition, high organic concentration, and abundance of hard - to - degrade substances, often uses a combination of physicochemical and biochemical processes. Pre - treatment removes some pollutants and enhances wastewater biodegradability. This approach ensures compliance with discharge standards, enables resource recovery, and delivers both environmental and economic benefits.

Beer and beverage wastewater is characterized by high organic content, a significant amount of suspended solids, and good biodegradability. A combined treatment process of pretreatment, anaerobic, and aerobic methods is commonly used. This approach effectively removes pollutants and ensures compliance with discharge standards.

Food wastewater has high organic content, good biodegradability, and significant fluctuations in water quality and flow rates. An integrated process of pretreatment, biological treatment, and advanced treatment is commonly used. By employing anaerobic - aerobic combined technologies, it ensures effective pollutant removal and compliance with discharge standards, while also enabling resource recovery. This approach delivers both environmental and economic benefits.

Sugar production wastewater has high organic content and good biodegradability. An anaerobic + aerobic treatment system is often used. It effectively removes pollutants, generates biogas and regenerable granular sludge, achieving both environmental protection and economic benefits.