Method of recycling household waste
AssigneeNEC Corporation
InventorsKoichi Nakamura, Yoshihiko Watanabe, Kazufumi Watabe
Life of this patent
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Abstract
The household waste treatment requires neither incineration nor disposal in landfills. Two processing sub-systems, first one for combustibles and the other or second one for incombustibles, cooperate with each other as a single system for recycling the waste. The first sub-system deals with combustible waste to yields products for fertilizing and/or conditioning soil. In the process, what are inappropriate to the production of the soil fertilizing and/or conditioning products are sent to the second sub-system, which deals with incombustible waste. This sub-system sorts the incombustible waste materials into various kinds of recyclable products. Combustibles among the incombustible waste materials are sent to the first sub-system.
Claims9
A method of recycling household waste, comprising the steps of:
- A) providing household waste mainly containing combustible material;
- B) separating the household waste from step A) into materials appropriate and inappropriate for forming a fertilizing or soil-conditioning product;
- C) collecting the materials appropriate for forming a fertilizing or soil-conditioning product;
- D) separately providing household waste mainly containing incombustible material;
- E) separating the household waste from step D) into recyclable products and organic products not suitable for recycling;
- F) collecting the recyclable products from step E) for recycling;
- G) combining the materials inappropriate for forming fertilizing or soil-conditioning product from step B) with the household waste from step D) for separating the combination into recyclable products and organic products not suitable for recycling in step E);
- and
- H) combining the organic products not suitable for recycling from step E) with the household waste from step A) for separating the combination into materials appropriate and inappropriate for forming a fertilizing or soil-conditioning product in step B).
A method according to claim wherein step E) comprises:
- E1) breaking bags containing the household waste mainly containing incombustible material to expose the household waste;
- E2) separating the broken bags from step E1) from the household waste;
- E3) combining the household waste from step E2) with the material inappropriate for forming a fertilizing or soil conditioning product from step H);
- and
- E4) separating the combined material from step E3) into recyclable products and combustible waste material contained in the combined material.
Dependencies are inferred from the claim text.