Method for enhancing denitrifying phosphorus removal efficiency of low-carbon-source sewage by using elemental sulfur

• Main Authors: CHEN LEI, CHENG BOYI, JIANG XU, LIAO CHUNRUI, LIU HAIPING, ZHOU LICHANG, GUO GANG
• Format: Patent
• Language: Chinese; English
• Published: 05.05.2023
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for enhancing denitrifying phosphorus removal efficiency of low-carbon-source sewage by utilizing elemental sulfur. The method comprises the following steps: firstly, inoculating sludge into a sequencing batch reactor, adding municipal sewage with a high-concentration carbon source, constructing a sufficient-carbon-source denitrifying phosphorus removal system, continuously operating for 25-35 days after the phosphorus removal rate reaches 75%, stabilizing the system, inoculating the sludge in the reactor into a new sequencing batch reactor, adding municipal sewage with a low-concentration carbon source, adding elemental sulfur, and continuously operating for 3-5 days after the phosphorus removal rate reaches 75%. And the elemental sulfur reinforced low-carbon-source sewage denitrification phosphorus removal system is constructed. The demand of nitrogen and phosphorus removal of an urban sewage treatment plant on a carbon source can be reduced, the influence of glycogen-accumu