Anti-NOM interference water purification through natural oxygen activation over DRC-catalyst obtained by pigeon manure recycling

Livestock and poultry manure (LM) management issues stemming from high-density livestock production and the increasing presence of emerging contaminants (ECs) in the water environment pose a significant threat to the ecosystem and public health. It is difficult for current technology to achieve efficient management of LM and ECs with low energy consumption. In this work, a novel and efficient DRC catalyst (Cu-CPM) is prepared for the first time using pigeon manure waste. Cu-CPM facilitates directed electron transfer and energy supply of ECs to activate dissolved oxygen in water as the primary electron acceptor for the generation of reactive oxygen species, resulting in the high-efficiency removal of ECs without the addition of extra oxidants or energy. The performance of the system is unaffected by the presence of various environmental factors (pH, anions, NOM, etc.). Notably, tetracycline (TC) as a typical ECs is completely removed within 15 min in actual water environment. Even after 1,080 h of simulated tertiary wastewater treatment, the removal of TC remains at 100 %. This work provides a reference for resource utilization of LM and efficient removal of ECs in complex water environment without external consumption.