Lawrence A Schmid

6830690, Dec 14, 2004

Sep 16, 2002

10/245018

Lawrence A. Schmid - Manhattan KS, 66502

C02F 300

210609, 210151, 210615, 210619, 2102211, 210626

A process for treating organically contaminated waste water is provided comprising an initial treatment step whereby microorganisms are replicated and either attach to support media or remain suspended in the waste water. The microorganisms reduce the incoming biochemical oxygen demand (BOD) level by consuming the organic contaminants. At least a part of the suspended portion of microorganisms are subsequently removed from the initially treated waste water, and the waste water under goes a further treatment step to further reduce the level of organic contaminants.

7284670, Oct 23, 2007

Oct 29, 2004

10/977660

Lawrence A. Schmid - Manhattan KS, US

Aero-Mod, Inc. - Manhattan KS

B01D 21/24

210523, 2105321, 210541

Solids removal assemblies () adapted for use in flow-through or batch-type sedimentation tanks () are provided which increase the efficiency of solids removal and eliminate physical scraping devices common with such sedimentation tanks. The preferred removal assemblies () include an elongated hood () disposed over a cooperating and complementally configured fill structure (), which fills the majority of the internal volume of the hood (). The hood () includes converging sidewalls () having lower most inlet openings () and spaced, tubular outlets () adjacent the apex thereof. Outlet pipes () are operably coupled with each of the hood outlets () for suction withdrawal of waste water-solids suspensions which are then conveyed for downstream processing. The hood () and fill structure () cooperatively define restricted flow paths for the waste water-solids suspensions, and assist in the creation of relatively high velocity movement of the suspensions to prevent bridging or clogging by collective solids adjacent the bottom of the tanks ().

46438360, Feb 17, 1987

Oct 1, 1985

6/782352

Lawrence A. Schmid - Manhattan KS

B01D 2712
B01D 2908
B01D 2938

210795

A filter for removal of suspended solids from fluids utilizes pressurized air for fluidizing filter media as the latter is exposed to backwashing water. The filter includes a casing having upright walls defining an annular chamber in horizontal cross-section, and a portion of the walls have openings that are pervious to liquid and substantially impermeable to the media particles. The flow of the backwash water is directed toward the upright, outer casing wall such that the backwash water flows at a direction at an angle relative to the upward flow of the pressurized air in the bed as the particles are fluidized, to facilitate removal of the accumulated solids without enabling escape of the media particles. Desirably, pressurized air is introduced into the chamber at vertically spaced locations to insure complete fluidization. Moreover, a cylindrical conduit is disposed within the media and surrounds the upper, pressurized air outlet aperture to provide a recirculation path for a portion of the media particles.

50357956, Jul 30, 1991

May 11, 1990

7/522252

Lawrence A. Schmid - Manhattan KS

Aero-Mod, Inc. - Manhattan KS

C02F 1114
B01D 2124

210197

A waste treatment module (10) designed for placement within an aeration basin (12) is provided which performs all of the desirable functions of aeration, flocculation, sedimentation, sludge return, effluent collection and skimming. the module (10) includes walls (20) defining an upright chamber (22); the latter is provided with a pair of side marginal, slotted inlets (28, 30) with corresponding flocculators (24, 26) below the respective inlets (28, 30). Each flocculator (24, 26) is equipped with a plurality of vertically spaced baffle plates (86, 88, 90) having offset openings (92, 94, 96, 98) so as to cause solids within the wastewater to traverse a tortuous descending flow path which promotes flocculation. An agglomerated flocculent is collected within a lower sedimentation zone (34) and then passes into a central collector (108) of inverted V-shaped configuration. Suction airlift pumping devices (118, 122) communicating with the collector (108) serve to elevate the flocculent to a trough (120), whereupon the flocculent is returned to basin (12).

39752763, Aug 17, 1976

Mar 17, 1975

5/559130

Lawrence A. Schmid - Manhattan KS

B01D 4300
C02C 112

210207

An efficient, modular, drop-in type aeration and separation assembly for use in relatively small sewage treatment facilities is disclosed which includes perforated aeration conduits or diffusers situated adjacent the sewage inlets of the apparatus for inducing an upwardly directed hydraulic suction or "pumping action" which serves to increase the turbulence and aeration of sludge and other solids entering and collected within the unit. The assembly preferably includes a multi-tube particulate removal unit which effectively removes entrained solids from sewage passing upwardly therethrough, in conjunction with an inverted V-shaped grease collector positioned below the multi-tube separator which also serves as an air diffuser to facilitate selective air cleaning of the latter. Air conduit means are provided for the selective delivery of compressed air beneath the grease collector for even diffusion thereof, and the conduit means also permits suction removal of grease or the like trapped within the collector so that the assembly can be easily cleaned without the necessity of shutting down the overall treatment facility for extended periods.

56119275, Mar 18, 1997

Mar 7, 1996

8/612227

Lawrence A. Schmid - Manhattan KS

Waterlink, Inc. - Canton OH

C02F 330

210605

A wastewater treatment system mixes return activated sludge with influent wastewater under anoxic conditions in the presence of luxury uptake organisms to cause release of phosphorous compounds into the surrounding wastewater. The wastewater is then aerated in the presence of nitrifying organisms to convert ammonia into nitrate while the luxury uptake organisms take up the phosphorous compounds. The wastewater is next subjected to alternating anoxic and oxic conditions to reduce the nitrate to nitrogen gas using denitrifying organisms. The resulting effluent is substantially free of nitrogen-based phosphorous-based nutrients.

54213835, Jun 6, 1995

Aug 31, 1993

8/113747

Lawrence A. Schmid - Manhattan KS

B65B 304

141232

A light weight apparatus for introducing a gas or liquid from a supply source into an open-topped liquid treatment tank includes an elongated support rail mounted in the tank, and a fluid delivery pipe assembly having at least one nozzle at the bottom end thereof, and a union at the top end thereof for connecting the pipe assembly with the fluid supply source. The pipe assembly is supported on the rail by spacers when the assembly is in a lowered position in which the at least one nozzle is disposed within the tank and the top end of the pipe assembly is aligned with the union. The spacers allow the pipe assembly to be axially translated along the rail, when the pipe assembly is disconnected from the supply source, between the lowered position and a raised position in which the at least one nozzle is removed from the tank for cleaning or repair.

44742100, Oct 2, 1984

Jan 19, 1984

6/572131

Lawrence A. Schmid - Manhattan KS

E02B 726

137573

A simplified, energy efficient, low cost liquid flow controlling weir apparatus is provided for "in tank" flow equalization and surge control. The apparatus is especially adapted for use in waste water treatment plants at tank outlets, and includes first and second, opposed, spaced apart upright weirs; the inboard first weir adjacent tank water is of lesser height than that of the outboard weir, and the latter is provided with one or more apertures therethrough at a level below the upper margin of the first weir. When water within the tank rises past and overflows the inboard weir plate, liquid flow is controlled by the outboard weir plate openings, water is rapidly backed up in the tank as storage, and tank discharge is maintained at a relatively uniform rate until the tank storage capacity is reached. The outboard weir plate prevents tank overflow, and is advantageously set at a height for overflow at 125-135 percent of design flow through the system.