Title:
排水処理方法および排水処理装置
Document Type and Number:
Japanese Patent JP6883992
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for processing wastewater containing ammonia-nitrogen at a high concentration with a relatively small capital investment, running cost, and easy control.SOLUTION: A wastewater treatment method of processing wastewater containing ammonia-nitrogen with activated sludge and by solid-liquid separation includes a step of adding a pH adjusting agent to the activated sludge such that an index value becomes 10 or less, the index value being calculated by a predetermined equation including an ammonia-nitrogen concentration, a pH, and a water temperature of the activated sludge.SELECTED DRAWING: Figure 1
Inventors:
Masato Takeuchi
Hina Taku
Kazuya Miki
Grandchild
Tomoki Kawagishi
Masuhiro Masuda
Maruyama Yuuri
Hina Taku
Kazuya Miki
Grandchild
Tomoki Kawagishi
Masuhiro Masuda
Maruyama Yuuri
Application Number:
JP2017005628A
Publication Date:
June 09, 2021
Filing Date:
January 17, 2017
Export Citation:
Assignee:
Mitsubishi Chemical Aqua Solutions Co., Ltd.
International Classes:
C02F3/12; C02F1/44; C02F3/30
Domestic Patent References:
| JP2003126886A | ||||
| JP2003053383A | ||||
| JP2001212592A | ||||
| JP2003024983A | ||||
| JP2004230338A | ||||
| JP6055195A |
Foreign References:
| US5290451 |
Attorney, Agent or Firm:
Umeda Shinsuke
Yuko Matsuniya
Hiroshi Morita
Reiko Tanaka
Yuko Matsuniya
Hiroshi Morita
Reiko Tanaka