METHOD FOR TREATING HOUSEHOLD REFUSE

• US 3,752,059 A
• Filed: 09/29/1971
• Issued: 08/14/1973
• Est. Priority Date: 10/06/1970
• Status: Expired due to Term

• Current Assignee: Jean-Jacques Boyer
• Original Assignee: Jean-Jacques Boyer
• Inventors: Boyer, Jean-Jacques
• Primary Examiner(s): Petrakes, John
• Assistant Examiner(s): Coe, Philip R.
• Application Number:
  US05/184,830
• Time in Patent Office: 685 Days
• Field of Search: 100/35,37,7A,7R,71-75,107,108
• US Class Current: 100/37
• CPC Class Codes: B03B 9/06 specially adapted for refuse
• CPC Class Codes: B30B 15/08 Accessory tools, e.g. knives; Mountings therefor
• CPC Class Codes: B30B 9/06 co-operating with permeable casings or strainers
• CPC Class Codes: B30B 9/067 with a retractable abutment member closing one end of the press chamber
• CPC Class Codes: B30B 9/301 Feed means
• CPC Class Codes: B30B 9/3035 Means for conditioning the material to be pressed, e.g. paper shredding means
• CPC Class Codes: B30B 9/3039 Fluid removing means
• CPC Class Codes: B30B 9/3092 with two or more stationary press boxes co-operating alternately with a press ram or simultaneously with press rams
• CPC Class Codes: C10L 5/46 on sewage, house, or town refuse C10L5/403, C10L5/406 take precedence
• CPC Class Codes: Y02E 50/10 Biofuels, e.g. bio-diesel
• CPC Class Codes: Y02E 50/30 Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

A method of treating household refuse in which the crushed and homogenized refuse is moistened and subjected to a compression in the order of 300 to 500 bars, the material under compression being traversed by perforated tubes for evacuating the liquids to form on the one hand liquid sludges extracted by the bores and on the other hand dry compressed substances. The installation for the treatment of household refuse comprises a storage tank, a device for mixing and homogenising the refuse, and immersion tank, a device for crushing and a press comprising perforated tubes for evacuating the liquids from the compression chamber.

Claims

1. A method of treating household refuse, comprising crushing and homogenizing the refuse, moistening the crushed and homogenized refuse with water, inserting perforated tubes into the moistened ref se and s ubjecting the moistened refuse to a compression of at least about 300 bars, and withdrawing through said tubes liquid sludges expressed from said refuse during said compression leaving dry compressed substances.

2. A method for treating household refuse according to claim 1, in which the dry substances are dispersed in a water bath containing 10 to 20 percent in weight of soda and, after maceration, the material is taken out and subjected to compression with the material in the course of compression traversed by perforated tubes for evacuating liquids, the liquid part being evacuated being concentrated to form a paper past and the residue constituting a new dry substance.

3. A method of treating household refuse according to claim 2, in which the dry substances obtained at the end of compression are mixed with a binder and moulded under a pressure of 20 bars.

4. A method of treating household refuse according to claim 3, in which the binder is constituted by silicate of soda hardened with CO2.

5. A method of treating household refuse according to claim 4, in which the hardening of the silicate is ensured by the addition of cement to the mixture of dry substances and silicate.

6. A method of treating household refuse according to claim 1, in which the liquid sludges are subjected to a fermentation in a narrow bed under constant stirring for a period of about 4-5 hours in a container at 60*-70* C through which flows an air current to produce a powdered compost and a combustible gas.

7. A method of treating household refuse according to claim 1, in which the dry substances obtained at the end of compression are powdered and used as fuel.

8. A method for treating household refuse according to claim 1, in which the dry substances obtained at the end of compression are mixed with a binder and molded under a pressure of 20 bars.