# US 10,479,708 B2 · Waste treatment system

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- Number: US 10,479,708 B2
- Document ID: US10479708B2
- Status: Granted
- Kind: B2
- Application number: 16/014,815
- Filed: 2018-06-21
- Published: 2018-10-18
- Granted: 2019-11-19
- Earliest claimed: 2014-04-17
- Assignees: Epic Cleantec Inc.
- Applicants: Epic Cleantec Inc.
- Inventors: Igor Tartakovsky
- Web page: https://patentgrep.com/patent/US10479708B2

## CPC

- C02F 1/72: by oxidation {(C02F1/4672 takes precedence)}
- C02F 1/02: by heating (methods of steam generation F22B; preheating boiler feed-water or accumulating preheated boiler feed-water F22D)
- C02F 9/00: Multistage treatment of water, waste water or sewage
- C02F 11/06: by oxidation (incinerators for burning waste liquors, e.g. sulfite liquor from paper-making plant F23G7/04)
- C02F 11/12: by de-watering, drying or thickening
- C02F 11/13: by heating
- C05F 7/00: Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
- E03C 1/1222: {Arrangements of devices in domestic waste water pipe-line systems}
- E03C 1/126: Installations for disinfecting or deodorising waste-water plumbing installations
- E03F 5/14: Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates (for use in sewage purification plants or both in sewage purification plants or in sewer systems B01D, C02F {; gullies with sediment traps E03F5/04})
- E03F 5/18: Tanks for disinfecting, neutralising, or cooling sewage (arrangements in tanks as to the biological or chemical aspect C02F)
- C02F 2103/002: {Grey water, e.g. from clothes washers, showers or dishwashers}
- C02F 2103/005: {Black water originating from toilets}
- C02F 2201/008: Mobile apparatus and plants, e.g. mounted on a vehicle
- C02F 2303/04: Disinfection
- C02F 2303/10: Energy recovery
- E03B 2001/045: {using household water}
- E03C 2201/40: Arrangement of water treatment devices in domestic plumbing installations
- Y02A 40/20: Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
- Y02W 10/30: Wastewater or sewage treatment systems using renewable energies
- 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)
- C05F: ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS
- E03F: SEWERS; CESSPOOLS
- E03B: INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER (drilling wells, obtaining fluids in general from wells E21B; pipe-line systems in general F17D)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

A waste treatment system may include a liquid separator for removing water from solid waste, a mixing tank connected to the liquid separator for mixing the solid waste with an oxidizing agent, a heat exchanger connected to the mixing tank for collecting heat generated by an exothermic reaction caused by mixing the oxidizing agent with the solid waste, and a sanitizer connected to the liquid separator to sanitize the water removed from the solid waste. A waste treatment method may involve separating water from solid waste in a liquid separator, mixing the solid waste from the liquid separator with an oxidizing agent in a mixing tank connected to the liquid separator to cause an exothermic reaction, collecting heat from the exothermic reaction in a heat exchanger coupled with the mixing tank, and sanitizing the water from the liquid separator in a sanitizer.

## Claims

### Claim 1

A waste treatment method using a waste treatment system located in or near a commercial or multiple-unit residential building, comprising:
removing water from solid waste in a liquid separator, thereby reducing water content of the solid waste to 30% or less;
transferring the solid waste from the liquid separator to a mixing tank connected to the liquid separator;
transferring the water from the liquid separator to a sanitization tank;
mixing the solid waste having a water content of 30% or less with an oxidizing agent in the mixing tank to cause an exothermic reaction and convert the solid waste to processed solid waste;
collecting heat from the exothermic reaction in a heat exchanger coupled with the mixing tank;
sanitizing the water from the liquid separator in the sanitizing tank; and
intermittently diverting the waste from a building sewer system away from the waste treatment system into a public sewer system.

### Claim 2 (depends on 1)

The method of claim 1, further comprising, before separating the water from the solid waste:
receiving waste from a building sewer system in at least one holding tank; and
channeling the waste from the at least one holding tank to the liquid separator.

### Claim 3 (depends on 1)

The method of claim 1, further comprising applying the heat from the heat exchanger to a source of domestic hot water connected to the heat exchanger.

### Claim 4 (depends on 1)

The method of claim 1, further comprising channeling the sanitized water into a water system for use as toilet water.

### Claim 5 (depends on 1)

The method of claim 1, further comprising collecting processed solid waste from the mixing tank in a collection tank.

### Claim 6 (depends on 1)

The method of claim 1, further comprising providing processed solid waste from the mixing tank for use as fertilizer.