Wastewater treatment apparatus, wastewater treatment method, wastewater treatment system, control device, control method, and program

摘要

A wastewater treatment apparatus comprising: an air diffusing unit that supplies gas to nitrogen containing water throughout substantially a whole area in a 5 flow direction of the nitrogen-containing water, so that ammonia contained in the nitrogen-containing water is nitrified to nitrate according to a flow of the nitrogen containing water in a reaction tank, and each desired proportion of nitrate is denitrified at each position along 10 the flow direction; a denitrification confirming unit provided at a first predetermined position in the flow direction of the nitrogen-containing water, to confirm whether a desired proportion of nitrate generated at the first predetermined 15 position has been denitrified; a nitrification confirming unit provided at a second predetermined position on a downstream side of the denitrification confirming unit along the flow direction of the nitrogen-containing water, to confirm whether a desired 20 proportion of ammonia has been nitrified; and a gas supply-amount control unit that controls a gas supply amount from the air diffusing unit at least on an upstream side of the denitrification confirming unit along the flow direction of the nitrogen-containing water, so 25 that the desired proportion of nitrate is denitrified according to a proportion of nitrate generated by nitrification at the first predetermined position confirmed by the denitrification confirming unit, and controls the gas supply amount from the air diffusing unit at least on 30 an upstream side of the nitrification confirming unit along the flow direction of the nitrogen-containing water, so that the desired proportion of ammonia is nitrified according to a proportion of ammonia at the second predetermined position confirmed by the nitrification confirming unit. LU <_ 0ZC9L Do 0 *