Method for producing organic fertilizer by utilizing garbage

• Main Authors: YANG XIAOHUI, CHEN HEXIANG, SUN MEIMEI
• Format: Patent
• Language: Chinese; English
• Published: 26.09.2012
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; FERTILISERS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE THEREOF; METALLURGY; ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention discloses a method for producing organic fertilizer by utilizing garbage. The method is characterized by comprising the steps of: A, adjusting the garbage, so that the mass ration of carbon to nitrogen is 25-30, the moisture content is 50-60 percent, a pH value is 6.5-7.5, and the grain size is 2-3cm; B, carrying out anaerobic digestion on the product for 50-60 days, air drying and hardening, and smashing until the grain size is 10-100mum; C, transforming the product into wormcast by utilizing earthworms; and D, separating the earthworms from the wormcast. According to the method, the content of organic matters of the obtained fertilizer reaches up to 43.25 percent, and the total primary nutrient (the sum of mass percentages of the nitrogen, phosphorus and potassium) reaches up to 6.85 percent. Due to the organic fertilizer, the germination index of vegetable seeds reaches about 73 percent, and the fertilizer becomes thoroughly decomposed and stable.