公开(公告)号：US3764014A

公开(公告)日：1973-10-09

申请号：US3764014D

申请日：1972-11-08

Applicant: BETZ LABORATORIES

Inventor： STERN A ,  GASNER L

IPC: B01F3/04 ,  C02F3/12 ,  C02F3/20 ,  C12M1/04

CPC classification number: C02F3/20 ,  B01F3/04106 ,  C02F3/12 ,  C12M27/20 ,  C12M29/06 ,  Y02W10/15

Abstract: The present disclosure is directed to the effective dispersion of a gaseous medium into a liquid medium, and in particular to a device which will serve this function. The device structurally is a thin channel chamber having an inlet and an outlet, at least one baffle located so as to separate the front and back walls of the chamber and of such height as to assure that its upper edge is below the outlet with its lower edge above the floor of the chamber, and at least one gas supply means located out of the vertical plane of the baffle, the height of the chamber as measured from the floor thereof to the outlet being significantly greater than the width of the chamber as measured by the distance between the front and back wall. The device finds particular application in the reduction of Biological Oxygen Demand and Total Organic Carbon in waste water streams.

公开(公告)号：US3829388A

公开(公告)日：1974-08-13

申请号：US27700672

申请日：1972-08-01

Applicant: BETZ LABORATORIES

Inventor： LANGE K ,  STERN A ,  GASNER L ,  HSU Y

IPC: C02F5/10 ,  C02B1/20 ,  C02B5/06

CPC classification number: C02F5/10 ,  Y10S159/13 ,  Y10S210/928

Abstract: THE PRESENT DISCLOSURE IS DIRECTED PRIMARILY TO A METHOD OF PRODUCING VALUABLE PRODUCTS FROM AQUEOUS SOLUTIONS OF LIGNIN AND LIGNIN DERIVATIVES. AQUEOUS SOLUTIONS OF THE LIGNIN AND DERIVATIVES THEREOF ARE AVAILABLE AS COMMERCIAL SOLUTIONS, CAN BE MADE FROM SOLIDS OR SEMI-SOLID MIXTURES THEREOF OR ARE AVAILABLE AS WASTE EFFLUETS FROM PULP PRODUCING MILLS. WITH RESPECT TO THE LATTER SOURCE, THE INVENTIVE METHOD NOT ONLY PERMITS THE BO OBTENTION OF VALUABLE PRODUCTS THEREFROM, BUT ALSO REDUCES THE AMOUNT OF NONBIODEGRADABLE AND TOXIC MATERIALS NORMALLY CONTAINED THEREIN TO BE ELIMINATED PRIOR TO DISCHARGE. IN ADDITION, THE METHOD REDUCES THE COLOR OF THE FINAL DISCHARGE. BASICALLY, THE METHOD ENTAILS THE ADDITIONS TO THE LIGNIN OR LIGNIN DERIVATIVE SOLUTION OF A POLYVALENT METAL SALT, THE CATION OF WHICH WILL REACT WITH A PORTION OF THE LIGNIN SOLUTION TO PRODUCE A WATER-INSOLUBLE PRECIPITATE, ACIDIFICATION OF THE PRECITIATE AND FINAL TREATMENT WITH A BASIC SOLUTION. THE FINAL PRODCUTS POSSESS UTILITIES AS SCALE AND PRECIPITATE AGENTS FOR AQUEOUS SYSTEMS, NAMELY STEAM PRODUCING AND COOLING WATER SYSTEMS.

公开(公告)号：US3737374A

公开(公告)日：1973-06-05

申请号：US3737374D

申请日：1971-07-22

Applicant: BETZ LABORATORIES

Inventor： STERN A ,  GASNER L

IPC: C02F9/00 ,  C12N1/22 ,  C12P7/46 ,  C12B1/00

CPC classification number: C12P7/46 ,  C02F2103/28 ,  C12N1/22 ,  Y10S210/917 ,  Y10S210/928 ,  Y10S435/823 ,  Y10S435/877 ,  Y10S435/917 ,  Y10S435/935

Abstract: THE PRESENT DISCLOSURE IS DIRECTED TO A METHOD WITH A TWO-FOLD OBJECTIVE. AS IS WELL KNOWN, PULP MILL WASTES WHICH ARE PRIMARILY COMPOSED OF LIGNIN ARE DARK IN COLOR AND EXTREMELY RESISTANT TO BIODEGRADATION. ACCORDINTLY, THE DISCHARGE OF THESE WASTES TO ANY NATURAL WATERWAYS IS LIMITED BY LEGISLATION. THE PRESENT INVENTION PROVIDES A METHOD FOR IMPROVING THE COLOR CHARACTERISTICS OF THE WASTE AND FOR UTILIZING THE PRODUCT OR MATERIAL OBTAINED THEREBY TO PRODUCE VALUABLE AND UTILIZABLE MATERIALS OR CHEMICALS. BASICALLY, THE METHOD ENTAILS CONTACTING AN OXIDATIVELY TREATED WASTE AND, MORE SPECIFICIALLY, AN OXIDATIVELY TREATED WASTE LIGNIN WITH A MICROBIAL POPULATION FOR A TIME AND AT CONDITIONS NECESSARY TO CONVERT SAID OXIDATIVELY TREATED LIGNIN TO THE UTILIZABLE END PRODUCTS. EXAMPLES OF UTILIZABLE PRODUCTS WHICH CAN BE OBTAINED IN THIS MANNER ARE ORGANIC ACIDS, BIOPOLERS, PROTEINS, ANTINBIOTICS, STEROIDS, VITAMINS, FERTILIZERS, ETC.