Advantages of intermittently aerated SBR over conventional SBR on nitrogen removal for the treatment of digested piggery wastewater

Removal of Nutrients From Anaerobically Digested Swine Wastewater Using an Intermittent Cycle Extended Aeration System

“…Wang et al (2018) indicated that an aeration/mixing rate of 1 will promote the denitrification process and improve the nitrogen removal efficiency. Song et al (2017) carried out swine wastewater treatment at an aeration/mixing ratio of 0.63 and achieved an ammonium removal efficiency of 96.5%. Similarly, Qiu et al (2019) performed experiments using landfill leachate wastewater in a bioreactor and reported an optimal aeration/mixing ratio of 0.5.…”

Nitrous oxide production in intermittently aerated Partial Nitritation-Anammox reactor: oxic N2O production dominates and relates with ammonia removal rate

“…Both continuous and intermittent aeration strategies have been implemented in PNA systems to achieve efficient NH 4 + removal [3]: While some studies show stable operation under continuous aeration [4], others find increased performance under intermittent aeration regimes and claim benefits of periodic anoxic phases for community metabolism, the suppression of undesired microbial groups (e.g. NOB) and energy savings due to a reduction of overall aeration time [5,6].…”

Release Reductions of Gaseous Ammonia and Nitrogen Oxides from Electrochemical Treatment of Swine Wastewater

“…Pig farming including intensive or large-scale raising and breeding operations is still necessary to meet the increasing pork demand in several countries (Osada et al, 2017;Song et al, 2017). Despite the recent spread of African swine fever to new areas or countries, China, the United States and the European Union held the first, second, and third positions, respectively, for the global pork production in 2018 (Deblitz et al, 2018).…”

“…Despite the recent spread of African swine fever to new areas or countries, China, the United States and the European Union held the first, second, and third positions, respectively, for the global pork production in 2018 (Deblitz et al, 2018). This phenomenon causes the generation of considerable amounts of swine wastewater which needs to be well treated before discharge for the prevention of surface and underground water pollution, because several types of pollutants including high levels of organic and nitrogen compounds might be present in swine wastewater, which are regulated by water quality parameter limits (U.S. EPA, 2013; Ding et al, 2017;Osada et al, 2017;Song et al, 2017).…”