Method and system for preparation of substrate for use in anaerobic digestion of organic waste

• US 10,597,629 B2
• Filed: 03/01/2016
• Issued: 03/24/2020
• Est. Priority Date: 09/02/2013
• Status: Active Grant

• Current Assignee: BioEnergy Limited liability Company
• Original Assignee: BioEnergy Limited liability Company
• Inventors: Smotritckii, Aleksandr Andreevich, Smotritskiy, Andrey Vladimirovich, Smotritskaya, Tatiana Andreevna
• Primary Examiner(s): Fox, Allison M
• Assistant Examiner(s): Xu, Qing
• Application Number:
  US15/057,924
• Publication Number:
  US 20160177253A1
• Time in Patent Office: 1,484 Days
• Field of Search: None
• CPC Class Codes: A61L 2/025 Ultrasonics
• CPC Class Codes: A61L 2/04 Heat A61L2/08 takes precedence
• CPC Class Codes: C05F 17/50 Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
• CPC Class Codes: C05F 3/00 Fertilisers from human or animal excrements, e.g. manure
• CPC Class Codes: C12M 21/04 for producing gas, e.g. biogas digesters for manure with production of biogas A01C3/028, biological treatment of water, waste water or sewage C02F3/00, C02F11/02, preparation of natural gas or syngas C10L3/06, C10L3/10
• CPC Class Codes: C12M 23/02 Form or structure of the vessel large containers B65D88/00
• CPC Class Codes: C12M 29/00 Means for introduction, extraction or recirculation of materials, e.g. pumps pumps per se F04B
• CPC Class Codes: C12M 29/20 Degassing; Venting; Bubble traps means for collection or storage of gas C12M23/36; gas collection apparatus for laboratory use B01L5/02
• CPC Class Codes: C12M 33/04 by injection or suction, e.g. using pipettes, syringes, needles pipettes in general B01L3/02
• CPC Class Codes: C12M 33/07 Dosage or metering devices therefore
• CPC Class Codes: C12M 33/12 by pressure
• CPC Class Codes: C12M 45/02 by mechanical forces; Stirring; Trituration; Comminuting crushing, pulverizing, disintegrating in general B02C
• CPC Class Codes: C12M 45/20 Heating; Cooling heating or cooling apparatus for laboratory uses B01L7/00
• CPC Class Codes: C12N 1/00 Microorganisms, e.g. protozoa; Compositions thereof medicinal preparations containing material from protozoa, bacteria or viruses A61K35/66, from algae A61K36/02, from fungi A61K36/06; preparing medicinal bacterial antigen or antibody compositions, e.g. bacterial vaccines, A61K39/00; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
• CPC Class Codes: C12N 1/04 Preserving or maintaining viable microorganisms immobilised microorganisms C12N11/00
• CPC Class Codes: Y02A 40/20 Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
• CPC Class Codes: Y02P 20/145 the feedstock being materials of biological origin
• CPC Class Codes: Y02W 30/40 Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Abstract

There is disclosed a method for preparation of substrate for use in anaerobic digestion of organic waste. The method can be executed in a substrate pretreatment system, the method comprising: loading of a substrate into the substrate pretreatment system, mixing the substrate with liquid; heating the substrate and liquid to a pre-determined processing temperature; exposing the mixture to radiation; transferring the processed substrate to a bioreactor, during the heating, the method further comprises: degassing the mixture using vacuum extraction; and circulating the mixture past an ultrasonic hydrodynamic radiator.

Claims

1. A method for preparation of a substrate for use in anaerobic digestion of organic waste, the method being implemented in a substrate pretreatment system, the method comprising:

a) simultaneously loading under pressure into an airtight chamber within the substrate pretreatment system i) an organic substrate, wherein the organic substrate comprises a liquid and a solid phase of the organic waste; and

ii) a heated organic fluid from a bioreactor, to form a mixture;

b) simultaneously heating and degassing the mixture, wherein the mixture is heated to and maintained at a temperature of about 37°

C. to sustain growth of microorganisms;

c) subjecting the mixture of step b) to treatment of an ultrasonic hydrodynamic device in a closed loop to create vibrations in the mixture that cause;

i) periodic pressure;

ii) cavitation;

or iii) both i) and ii) to break down cell walls within the ultrasonic hydrodynamic device comprising a radiator which is connected to the airtight chamber to form the closed loop, and wherein the mixture is circulating within the closed loop during the treatment; and

d) transferring the mixture of step c) to the bioreactor.

2. The method of claim 1, further comprising supplying an oxygen-free gas within the airtight chamber.

3. The method of claim 2, wherein the oxygen-free gas is supplied from the bioreactor.

4. The method of claim 1, wherein the liquid is supplied from the bioreactor.

5. The method of claim 1, wherein the degassing is performed by creating a vacuum in the substrate pretreatment system.