Abstract:

In order to explore the feasibility of the application of photosynthetic bacteria in wastewater treatment and collaborative carbon sequestration, Rhodopseudomonas palustris was used to treat wastewater, and its ability to remove chemical oxygen demand(COD) of wastewater within 120 h of treatment time was studied. CO₂ was introduced into the treatment process to study rhodopseudomonas' ability to treat wastewater and collaborative carbon sequestration. The results showed that the photosynthetic microorganisms had the best treatment effect under the condition of aerobic light. The concentration of rhodopseudomonas added to 400 mL simulated wastewater was 0.5 g/L. After treatment for 120 h, the COD value of wastewater decreased from 2 753.50 mg/L to 185.57 mg/L. Rhodopseudomonas can not only effectively treat wastewater as well as significantly reduce the COD value of wastewater, but also achieve the fixation of CO₂.

Key words: photosynthetic bacteria, CO₂ absorption rate, organic carbon utilization, coprocessing