5534143 Microbubble generator for the transfer of oxygen to microbial inocula, and microbubble generator immobilized cell reactor

PATENT ABSTRACTS

Woodstock, GA, UNITED assigned to Clem Environmental A clay

liner

is provided

for

STATES Corp use

in

constructing low permeability barriers in the bottom of landfills and man-made bodies of water. The liner is provided in the form of a layer of bentonite preferably disposed between a primary carrier sheet and a cover sheet. At least one outer edge of either the cover sheet or the primary carrier sheet is made from a material that allows substantial bentonite migration through or includes a slit that enables bentonite to migrate through while the remaining areas of the cover sheet or primary carrier sheet are fabricated from a fabric that does not permit substantial bentonite migration. When two liners are disposed adjacent to each other in the bottom of the landfill or pond, the two liners are overlapped so that the more open portion of one liner engages the adjacent liner. Upon activation, the bentonite migrates through the more open fabric to create a seal between the two adjacent liners. The result is a self-sealing geosynthetic clay liner system.

309

5531898 SEWAGE AND CONTAMINATION REMEDIATION AND MATERIALS FOR EFFECTING SAME Wickham Daniel E Sebastopol, CA, UNITED STATES assigned to International Organic Solutions Corp Methods for the biological treatment of sewage in a sewage treatment plant, of wastestreams and of ponds are disclosed. The methods employ a composition comprising active amounts of an enzyme mixture, B. subtilis and P. fluorescens, and a nutrient source having a COD of 10,000 mg!kg or less, of which one source is used mushroom compost. The composition is first activated in fresh water, is then acclimated in a waste moiety, and the acclimated mixture is then used to treat the main body of the waste, such as sewage sludge, a wastestream or a pond.

5529612 METHOD AND SYSTEM FOR REMOVING VOLATILE ORGANICS FROM LANDFILL GAS Troost John R St Bernard Parish, LA, UNITED STATES assigned to Southern Petroleum Laboratories Inc A method for removing volatile organics from landfill gas, in which the landfill gas, which consists primarily of methane and contains volatile organic components, is passed through a quantity of liquid tetraglyme to cause the volatile organic components to be absorbed in the tetraglyme.

5534143 MICROBUBBLE GENERATOR FOR THE TRANSFER OF OXYGEN TO MICROBIAL INOCULA, AND MICROBUBBLE GENERATOR IMMOBILIZED CELL REACTOR Portier Ralph J;Mao Huazhon Baton Rouge, LA, UNITED STATES assigned to Louisiana State University Board of Supervisors a Governing body of Louisiana State University Agricultural and Mechanical College

310

PATENT ABSTRACTS

A microbubble generator is disclosed for optimizing the rate and amount of oxygen transfer to microbial inocula or biocatalysts in bioreactor systems. The microbubble generator, and an associated immobilized cell reactor, are useful in the detoxification and cleanup of non-volatile polymeric and volatile organic-contaminated aqueous streams. In particular, they are useful in the and mineralization continuous toxic organic biodegradation of compounds, including volatile organic compounds, associated with industrial and municipal effluents, emissionsand ground water and other aqueous discharges. One embodiment of the invention includes a microbubble chamber packed with small inert particles through which a liquid effluent and oxygen or another gas are admitted under pressure, followed by a venturi chamber to further reduce the size of bubbles. 5534147 APPARATUS AND METHOD FOR MODIFYING WASTE

5534437 CO-COMPOSTING AND APPARATUS

An apparatus and method for modifying waste water to reduce nitrate content and biochemical oxygen demand is provided. The apparatus includes an ammonitication and denitrification region having a substantially anaerobic environment, a nitritication region having a substantially aerobic environment, and an effluent Effluent circulates drainage region. ammonification and the through denitrification region and the nitrification organic convert region to nitrogen-containing compounds in waste water to nitrogen gas and carbon dioxide.

FOR

TREATING SOLID WASTE SEWAGE SLUDGE

AND

Arrau Agustin H Mill Neck, NY, UNITED STATES assigned to Bio-Waste Technologies International Ltd A method for converting municipal solid waste and sewage sludge into an organic fertilizer has a Stage 1 and a Stage 2, and includes a vessel that has three climate zones. Stage 1 has three climate zones, wherein the first climate zone contains thermophilic microorganisms, the second mesophilic climate zone contains microorganisms, and the third climate zone contains other microorganisms. The product of Stage 1 is reintroduced into Stage 2 and is then inoculated with a biodegrading enzyme and a bacteria species to produce a different final product fertilizer from Stage 2.

WATER Kallenbach Thomas J; Buchanan Justin; Goodrich Matthew H; Skinner Ronald; Poncelet Greg; Kallenbach Trina J MT, UNITED STATES Bozeman, assigned to Fluidyne Incorporated

PROCESS

5536325 METHOD BIOMASS Brink David L STATES

OF TREATING MATERIAL Berkeley, CA, UNITED

Two stage hydrolysis of lignocellulosic material, conditions during the first stage being such as to hydrolyze or hemicellulosic the depolymerize component without substantial degradation of resulting monosaccharides, conditions during the second stage being such as to hydrolyze the cellulose to glucose without substantial degradation of the glucose. The solids left after first stage hydrolysis are disintegrated mechanically thereby greatly facilitating second stage hydrolysis. Hydrolysis in both stages is preferably