NOVELTY - Wastewater treatment equipment (100) comprises anaerobic treatment tank (1), aerobic treatment tank (2) which processes primary treated water processed by anaerobic treatment tank, and sulfur denitrifying reactor (4) which processes secondary treated water processed by aerobic treatment tank and discharges treated water as final treated water. Secondary treated water is allowed to pass through sulfur denitrifying reactor.    USE - Wastewater treatment equipment for processing sewage or industrial wastewater.    ADVANTAGE - Wastewater treatment can be easily performed, and high nitrogen removal rate can be achieved.    DETAILED DESCRIPTION - Wastewater treatment equipment (100) comprises anaerobic treatment tank (1), aerobic treatment tank (2) which processes primary treated water processed by anaerobic treatment tank, and sulfur denitrifying reactor (4) which processes secondary treated water processed by aerobic treatment tank and discharges treated water as final treated water. Secondary treated water is allowed to pass through sulfur denitrifying reactor, nitrate nitrogen or nitrite nitrogen contained in secondary treated water, by action of sulfur denitrifying bacteria, is reduced with hydrogen sulfide contained in biogas discharged from anaerobic treatment tank, and nitrogen removal of secondary treated water is performed. An INDEPENDENT CLAIM is included for wastewater treatment method which involves processing to-be-processed water by anaerobic treatment tank (1), processing primary treated water by aerobic treatment tank (2), allowing secondary treated water to pass through sulfur denitrifying reactor (4), reducing nitrate nitrogen or nitrite nitrogen contained in secondary treated water with hydrogen sulfide by action of sulfur denitrifying bacteria, and discharging treated water as final treated water.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the wastewater treatment equipment. (Drawing includes non-English language text).    Anaerobic treatment tank (1)    Aerobic treatment tank (2)    Sulfur denitrifying reactor (4)    Carrier (7)    Wastewater treatment equipment (100)