专利汇可以提供Method for controlling biological nitrification process专利检索,专利查询,专利分析的服务。并且PURPOSE: To provide a nitrification process always stabilized by measuring NH
4 -N concentration in the water near an outlet of an aeration tank and controlling the volume of air to be of a fixed value of concentration.
CONSTITUTION: Raw water 1 containing nitrogen compound and organic sludge is introduced into an aeration tank 2, and organic substances decomposable biologically are decomposed and removed by the action of BOD oxidizing bacteria. Also, NH
4 -N contained in the raw water is oxidized into NO
x -N flows into a sedimentation tank 4, where sludge is separated by gravity settling to separate treated water 3. The air flow nd the supplus sludge extraction flow are controlled in such a manner as to make NH
4 -N concentration come to a fixed value in the area near the outlet of the aeration tank measured by a NH
4 -N sensor 10. By this arrangement, a stabilized nitrification process is performed throughout the year.
COPYRIGHT: (C)1988,JPO&Japio,下面是Method for controlling biological nitrification process专利的具体信息内容。
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