Catalyst for enhancing ammonia conversion in domestic wastewater, and application method thereof

• Main Authors: YIN HONGYANG, GU JIAN, YANG ZEPING, SUN XIANGWU, NIE LI, WU BIN, DAI JIANG, SUN CHENPENG, ZHAO YUAN, CHEN JIANGJIE, XU TENG, ZHANG NIANCI, XIE YIN
• Format: Patent
• Language: Chinese; English
• Published: 17.05.2017
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a catalyst for enhancing ammonia conversion in domestic wastewater and an application method thereof, belonging to the technical field of wastewater treatment. The invention provides the catalyst for enhancing ammonia conversion in domestic wastewater and the application method thereof. The catalyst is prepared by the following steps: performing calcination and ball milling activation on medical stone, performing surface modification on the medical stone under an acid environment with a coupling agent and lauryl mercaptan, then mixing the medical stone with metal ions, soaking a carrier into the mixture for coupling with the metal ions and forming a complex to prepare the catalyst, and using the catalyst for treating domestic wastewater to reduce the ammonia nitrogen content and improve the ammonia conversion rate. According to the invention, medical stone is used as the carrier and combined with the metal ions, free radicals are released through change of ion valence, simultaneously