Carbon capture and nitrogen removal in a novel HRAS-SNPDA system
The system synchronously realized remarkable efficiency in carbon capture (CPR, 52.1%) and nitrogen removal (NRE, 94.9%), signifying a substantial advancement in wastewater treatment. The adoption of a low-aeration regime and a strategic segmental feeding approach effectively minimized energy consumption (O2 30% reduction) and resource investment (COD 100% reduction). When compared to conventional wastewater treatment processes, this innovative process not only aligns with current dual-carbon reduction policies but also pioneers a new paradigm for wastewater resource recovery and sustainable energy self-sufficiency.