1
Yoshiaki Harada, Kenichi Yamasaki: Process for treating waste water. Osaka Gas Company, Larson and Taylor, October 15, 1991: US05057220 (47 worldwide citation)

The invention provides processes for treating waste water comprising subjecting waste water to liquid phase oxidation without catalyst, liquid phase oxidation with catalyst and anaerobic digestion and/or aerobic treatment.


2
Theodore M Wendt, Arthur M Kaplan: Process for treating waste water containing cellulose nitrate particles. The United States of America represented by the Secretary of the Army, Nathan Edelberg, Robert P Gibson, Lawrence E Labadini, February 17, 1976: US03939068 (37 worldwide citation)

Total removal of cellulose nitrate particles from a waste water stream is accomplished by a combination of chemical and biological treatments which result in an effluent having a greatly reduced concentration of nitrogen compounds and having an acceptable BOD. The first step in the process requires ...


3
Nobuhiko Okada, Yoichi Nakanishi, Yoshiaki Harada: Process for treating waste water. Osaka Gas Company, Larson Taylor and Hinds, February 27, 1979: US04141828 (35 worldwide citation)

A process for treating ammonia-containing waste water which comprises subjecting the ammonia-containing waste water to wet oxidation with an oxygen-containing gas in the presence of a catalyst while maintaining the waste water at a temperature of 100 to 370.degree. C. and at pressure permitting the ...


4
Fufang Zha, Edward John Jordan: Biological phosphorus removal. Siemens Water Technologies, December 14, 2010: US07850851 (33 worldwide citation)

A process for treating waste water to remove phosphorous and nitrogen in a treatment system including an anaerobic zone (5) containing an anaerobic mixed liquor having organisms which release phosphorous into the anaerobic mixed liquor; an anoxic zone (7) containing an anoxic mixed liquor having org ...


5
Wolfgang Dilla, Helmut Dillenburg, Michael Klumpe, Hans Georg Krebber, Horst Linke, Detlef Orzol, Erich Ploenissen: Process for treating waste water. Solvay Deutschland, Evenson McKeown Edwards & Lenahan, August 29, 1995: US05445741 (31 worldwide citation)

The present invention relates to a process for decreasing the content of organic-chemical substances in waste water by chemical oxidation, preferably in the presence of chlorine, and optionally additional alkaline thermal treatment of the waste water, in which the waste water, which has a COD conten ...


6
Naomichi Kakihara, Yoshiaki Harada, Norio Uedono: Process for treating waste water. Osaka Gas Company, Larson and Taylor, October 13, 1981: US04294706 (30 worldwide citation)

This invention relates to a process by which waste water containing ammonia or chemically oxidizable substances (hereinafter referred to as "COD components"), suspended solids, etc. in addition to ammonia is subjected to wet oxidation in the presence of a catalyst to convert these pollutants to nitr ...


7
Ittshu Yokata: Process for treating waste water and an apparatus therefor. Ishigaki Kiko, January 30, 1979: US04137171 (28 worldwide citation)

A process for treating waste water such as sewage wherein waste water to be purified is brought successively into contact with a number of net units which are arranged in a treating tank with certain intervals therebetween. Organic substances in the waste water are removed due to decomposition cause ...


8
John M Gray, David C Lovetro: Process for treating waste water effluent. EKA Nobel, Leydig Voit & Mayer, November 28, 1995: US05470480 (25 worldwide citation)

Waste water effluent streams are treated with hydrogen peroxide and ultraviolet radiation. Hydroxyl ions formed by action of UV on H.sub.2 O.sub.2 reduces BOD, COD, AOX and color in effluent. In the case of pulp mill effluent, some or all of the effluent can then be recycled to the pulp mill.


9
Wolfgang Dilla, Helmut Dillenburg, Erich Ploenissen, Michael Sell: Process for treating waste water containing chlorinated organic compounds from production of epichlorohydrin. Solvay Deutschland, Evenson McKeown Edwards & Lenahan, February 28, 1995: US05393428 (25 worldwide citation)

A process for treating waste water containing chlorinated organic substances, particularly waste water from production of epichlorohydrin which contains more than 10 mg of adsorbable organic halogen compounds (AOX) per liter, comprising charging the waste water at a pH of 10 to 14 (measured at room ...


10
Yoshiaki Harada, Akio Nakashiba, Hiroyuki Matuura, Teizou Okino, Hajime Fujitani, Kenichi Yamasaki, Yasuhumi Doi, Shigenobu Yurugi: Process for treating waste water by wet oxidations. Osaka Gas Company, Larson and Taylor, October 13, 1987: US04699720 (25 worldwide citation)

Waste water containing at least two kinds of components among suspended solids, ammonia and chemically oxidizable substances is treated in a liquid phase oxidation in the presence of a catalyst supported by a carrier of honeycomb construction.



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