Improved oxidation ditch technology has the advantages of high efficiency, economy, stable effluent and simple management. Based on the technology of A/O (activated sludge) process and other sewage treatment processes, through the technical innovation of several large and medium-sized sewage treatment projects, the dissolved oxygen in the process of ammoniation, nitrification and denitrification is adjusted by selection and system, and the process parameters of each process are controlled to effectively adjust the BOD/COD ratio adapted to the dissolved oxygen content of each level, so as to achieve good stability of treated water quality, high water purification rate and deep phosphorus removal and deoxygenation.

Technical advantages

1. Low operating cost, direct operating cost 0.18~0.30 yuan/ton;

2. Small land occupation and low infrastructure investment;

3. Easy to manage and requires little maintenance;

4. It has good decontamination ability, and the removal rates of N and P can reach more than 80%;

5. Different improved oxidation ditch technologies can be selected according to site characteristics, effluent water quality requirements and the nature of the sewage to be treated;

6. Strong adaptability to changes in water temperature, water quality and water volume;

7. The sludge yield is low and most of it has reached a stable level, so no further digestion treatment is required.

Application Areas

Municipal Wastewater Treatment

Industrial Wastewater Treatment

Domestic sewage treatment in small and medium-sized towns