Ralph J. Kramer
Engineering at Olentangy Riv Rd, Delaware, OH
License number
Louisiana PE.0013870
Issued Date
Jul 31, 1973
Category
Civil Engineer
Type
Mechanical Engineer
Address
Address
6180 Olentangy River Rd, Delaware, OH 43015
Professional information
Pulp Tree Bark Treatment
US Patent:
4135907, Jan 23, 1979
Filed:
May 17, 1977
Appl. No.:
5/797610
Inventors:
John E. Houser - Marion OH
Ralph J. Kramer - Delaware OH
Ralph J. Kramer - Delaware OH
Assignee:
Aerotherm, Inc. - Delaware OH
International Classification:
C05F 1108, C05F 1100
US Classification:
71 9
Abstract:
Bulk tree bark removed as a preparatory procedure to pulping wood for use in the paper industry is converted into a useful humus by-product through the use of a system and method wherein the bark is delivered to a receiving station in an aerobicly untreated state. This material then is adjusted to optimize the nitrogen content thereof through the addition of nitrogenous material. Additionally the pH level thereof as well as the moisture level is optimized through the utilization of a mixing arrangement which agitates and retains the materials over a predetermined time interval. The material then is transferred to a digester apparatus where it undergoes aerobic thermophilic phase digestion under the influence of induced atmospheric air and agitation. Two digester arrangements are described. Following thermophilic digestion to derive a relatively low biochemical oxygen demand value for the material, it is removed to a curing region where, under environmental atmospheric conditions, is retained for an interval sufficient to effect a mesophilic phase digestion.
Organic Waste Material Digestion Apparatus And System
US Patent:
4134749, Jan 16, 1979
Filed:
May 17, 1977
Appl. No.:
5/797627
Inventors:
John E. Houser - Marion OH
Ralph J. Kramer - Delaware OH
Ralph J. Kramer - Delaware OH
Assignee:
Aerotherm, Inc. - Delaware OH
International Classification:
C05F 1108
US Classification:
71 9
Abstract:
System and apparatus for treating organic waste material, suited, for example, for the aerobic-thermophilic treatment of cattle manure. The waste material initially is commingled with an expanded, size limited dry cellulosic material in a mixing stage, preferably, a pug mill device, to achieve a bulk density and moisture content optimized for thermophilic digestion. A digestion arrangement is provided assuming a reliability for complete aerobic treatment of all material removed therefrom.