Michael John Lloyd

US Patent:

51300303, Jul 14, 1992

Filed:

Oct 18, 1989

Appl. No.:

7/422795

Inventors:

Michael Lloyd - Mequon WI

Assignee:

Otto Tuchenhagen GmbH & Co. KG

International Classification:

B01D 1702
B01D 17032

US Classification:

210739

Abstract:

A method for the automatic sharp separation and removal of layers of fluids from a container through a headspace in the container comprises the use of two separate and simultaneous flow streams to draw fluid from the upper layer as the apparatus descends in the fluids. The entry of the lower fluid into the apparatus is detected as a result of the different physical properties of the lower fluid by which the apparatus is caused to stop its descent into the fluid and to interrupt the flow of fluid through one of the flowsteams. The flow of the flowstream is interrupted by the entry of a gas into that stream. The apparatus is subsequently lowered into the remaining fluid and the withdrawal of the fluid through the apparatus is begun again.

US Patent:

20190382293, Dec 19, 2019

Filed:

Jun 17, 2019

Appl. No.:

16/443763

Inventors:

Michael Lloyd - Mequon WI, US

International Classification:

C02F 1/66
C02F 1/00
G05D 21/02

Abstract:

A system and method for pH neutralizing waste liquid is provided. The waste liquid to be treated is collected in a treatment tank, and the initial pH of the waste liquid is determined. The initial pH value of the waste liquid is then compared to high and low reference pH values which are the highest and lowest acceptable pH values for the waste liquid after treatment. In accordance with the comparison of the initial pH value of the waste liquid to be treated and the reference pH values, either an acid neutralizer or a base neutralizer is added to the waste liquid using one or more venturis as the waste liquid is being pumped from the treatment tank through a recirculation line until the desired end pH value of the treated waste liquid is equal to or between the reference high and low pH values. After treatment with an acid or base, the treated waste liquid may be discharged from the treatment tank to a drain, sewer, or other destination.