144 PATENT ABSTRACTS

An improved process for the treatment of aqueous effluents containing strong anions such as sulphate, nitrate, chlorides and fluorides wherein the aqueous effluent is subjected to a biological purification process is described. Ac- cording to the process, aqueous effluent such as those obtained by condensation of gases present in a coal gasification plant and containing these anions and others in a combined concentration of at least 2 reval/1 and organic contaminants in a concentration of at least 1000 rag/1 are subjected to the biological purification followed by separa- tion of water from solids of the effluent. There- after, the water is subjected to anion exchange in an anion exchanger against hydrogen carbonate ions and at least part of the so-treated water is recycled to the aqueous effluent so as to be pre- sent therewith during the biological purification. By such a process the biological purification can be conducted at an optimum pH such as a pH in the range of 6 to 8. CO3/HCO3 ions contained in the water from the anion exchanger can be con- centrated by passing the water through a cooling tower whereby a portion of the same is evaporated.

4483923

M I C R O B I O L O G I C A L P R O C E S S F O R R E M O V I N G N O N - I O N I C S U R F A C E A C T I V E A G E N T S ,

D E T E R G E N T S A N D T H E L I K E F R O M W A S T E W A T E R A N D

M I C R O O R G A N I S M C A P A B L E O F S A M E

James E Blair assigned to Sybron Corporation

A process for degrading and removing anionic and/or non-ionic surface active agents, deter- gents and the like from wastewater containing the same comprising treating wastewater con- taining the anionic and/or non-ionic surface active agents, detergents and like compounds with a novel microbial strain of Pseudomonas fluorescens under aerobic conditions; and the novel microorganism of the strain Pseudomonas ftuorescens.

4485016

E N Z Y M A T I C R E M O V A L O F A R O M A T I C H Y D R O X Y

C O M P O U N D S A N D A R O M A T I C A M I N E S F R O M W A S T E W A T E R S

Thomas R Hopkins assigned to Phillips Petro- leum Company

A process for the removal of at least one com- pound selected from the group consisting of an aromatic hydroxy compound or an aromatic amine having a water solubility of at least 0.01 mg/L from waste water containing the same, which comprises treating the water with a treating agent which consists essentially of peroxidase, at least one agent selected from the group consisting of alcohol oxidase and a straight chain C1 to C4 alcohol or glucose ox- idase and glucose and an azide salt of the for- mula MN3.

4486216

M E T H O D F O R T H E P R O C E S S I N G O F F E C A L W A S T E

Axe von Raven, Hans Buckl, Ulrich Kroner, 8031 Gilching, Federal Republic Of Germany

A method for the processing of fecal waste by treatment with mineral clay, characterized in that: A. a smectite clay, enriched with aerobic and anaerobic microorganisms, specific for the digestion of fecal waste, and with plant prepara- tions which promote the increase of said micro- organisms, and lime, is allowed to digest the fecal waste; and B. an acid phosphate is added to the fecal waste treated in this manner, after addition of the enriched smectite clay and shortly before use of the treated waste as a fertilizer.

4487697

B I O L O G I C A L W A S T E - W A T E R - T R E A T M E N T M E T H O D

Botho Bohnke, Bernd Diering, D 51 Aachen, Federal Republic Of Germany assigned to Boh- nke Botho

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