Abstract
An ion exchange biological reactor (IEBR) treated organic matter and nitrogen in swine wastewater at 23°C. The enhanced IEBR enhanced the ammonium flux by electrochemical attraction. The abiotic ammonium fluxes at the applied voltage of 0, 1, and 3V were 1.33, 1.79, and 2.73mg/m2/s, respectively. In the meantime, the ammonium fluxes caused by biological nitrification at the applied voltage of 0, 1, and 3V were 1.54, 2.07, and 3.59mg/m2/s, respectively. Removal of organic matter and nitrogen in swine wastewater was proportional to the applied voltage. The average SCOD removal efficiencies at the applied voltage of 0, 1, and 2V were 59.7%, 60.2%, and 67.0%, respectively. The average total nitrogen removal efficiencies at the applied voltage of 0, 1, and 2V were 39.8%, 49.5%, and 58.7%, respectively.
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