# US 8,784,665 B1 · Method for reducing odor and harmful materials from sewer plant process streams

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- Number: US 8,784,665 B1
- Document ID: US8784665B1
- Status: Granted
- Kind: B1
- Application number: 13/542,167
- Filed: 2012-07-05
- Granted: 2014-07-22
- Earliest claimed: 2011-04-12
- Applicants: Geoff McMahon
- Inventors: Geoff McMahon
- Web page: https://patentgrep.com/patent/US8784665B1

## CPC

- C02F 1/286: {using natural organic sorbents or derivatives thereof}
- C02F 3/344: {for digestion of mineral oil}
- C05C 3/00: Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
- C05F 7/00: Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
- C02F 1/52: by flocculation or precipitation of suspended impurities {(C02F1/463 takes precedence)}
- C02F 1/681: {by addition of solid materials for removing an oily layer on water}
- C02F 2101/103: {Arsenic compounds}
- C02F 2101/16: Nitrogen compounds, e.g. ammonia
- C02F 2101/20: Heavy metals or heavy metal compounds
- C02F 2101/22: Chromium or chromium compounds, e.g. chromates
- C02F 2101/30: Organic compounds
- C02F 2101/32: Hydrocarbons, e.g. oil
- C02F 2103/007: {Contaminated open waterways, rivers, lakes or ponds}
- C02F 2303/02: Odour removal or prevention of malodour
- C02F 2305/06: Nutrients for stimulating the growth of microorganisms
- Y02A 40/20: Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- C05C: NITROGENOUS FERTILISERS
- C05F: ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

The present invention provides methods for reducing odor and harmful materials, such as heavy metals and organic compounds, from sewer and/or industrial plants using humate and/or leonardite. The humate and/or leonardite has a particle size of about 400 mesh or less.

## Claims

### Claim 1

A process for treating a sewer stream comprising passing a flow of the sewer stream through leonardite, said leonardite comprising a particle size of about 400 mesh or less and having been reacted with gaseous ammonia so as to render the leonardite into a water-soluble powder.

### Claim 2 (depends on 1)

The process of claim 1 wherein the leonardite is used to treat the flow of the sewer stream at a rate of about one pound of leonardite to about 10,000 gallons of sewer.

### Claim 3 (depends on 1)

The process of claim 1 further comprising separating out sewer solids and the leonardite via coagulation after the sewer stream has been treated with the leonardite.

### Claim 4 (depends on 3)

The process of claim 3 further comprising disposing of the separated out sewer solids and the leonardite.

### Claim 5 (depends on 1)

The process of claim 1 further comprising separating out sewer solids and the leonardite via flocculation after the sewer stream has been treated with the leonardite.