Waste citrus green multistage cyclic utilization method

Abstract

The invention provides a waste citrus green multistage cyclic utilization method. The waste citrus green multistage cyclic utilization method comprises the following steps: waste citrus is subjected to fragmentation and slag pressing, and solid slag and a press filtrate are collected; the press filtrate is subjected to grid filtering to obtain a grid filtrate and intercept residues; the grid filtrate flows through a ceramic ultrafilter membrane for ultrafiltration, a PE pot for a flocculation reaction, and a membrane for reverse osmosis to obtain the permeation liquid and trapped fluid, the permeation liquid is subjected to biochemical treatment to obtain discharge water, the trapped fluid is subjected to aerobic anaerobic fermentation, anaerobic and aerobic fermentation or anaerobic fermentation, and filtering in order to obtain a primary nutrient solution; the primary nutrient solution is subjected to flocculation and centrifugation to obtain a purified nutrient solution and centrifugal residue, and a functional component is added in the purified nutrient solution as an organic nutrient liquid fertilizer; the intercept residues and the centrifugal residue are subjected to plate-frame pressure filtration to obtain the solid slag and the press filtrate; composite microbial flora is sprayed to the solid slag as an earthworm culture raw material for culturing the earthworm, the produced earthworm is taken as bioprotein, and the earthworm manure separated from an earthworm culture bed is used for preparing a biological organic fertilizer; and the functional component is addedin the biological organic fertilizer as the functional biological organic fertilizer.

Description

【Technical field】 [0001] The invention relates to resource utilization of organic waste, in particular to a green multi-stage recycling method for waste citrus. 【Background technique】 [0002] In major citrus producing areas such as Xiangshan County, Ningbo City, and Huangyan District, Taizhou City, Zhejiang Province, during the growth and development of citrus or the picking and storage stage, due to the influence of bad weather, pest damage, improper management measures and storage techniques, there will be a large number of citrus every year. Abandoned citrus that loses its edible and commercial value is produced, and the types include diseased and rotten fruits, dehydrated and shriveled fruits, deformed fruits, physiological and pathological fallen fruits, and artificially removed young fruits. For the sake of convenience, orange growers in production areas often dump waste citrus on the riverside in the field and beside the road at the entrance of the village, causing r...

AI Technical Summary

Problems solved by technology

This complete set of equipment can be used for automatic sorting, collection and recycling of waste citrus in the garbage station, to produce organic fertilizers, and to improve resource utilization, but the treatment method is single, and waste is still generated

[0007] Another example is CN106631212A, which discloses a method for producing organic fertilizers from planting and breeding waste in vegetable production areas. The method comprises the following steps: (1) Raw material pretreatment: After the crop straws and tail vegetables are pulverized, the pretreated straws are respectively obtained. , pretreated tail vegetables; (2) after the pretreated stalks, pretreated tail vegetables, and aquaculture waste are mixed uniformly to obtain a mixture with a moisture content of 60% to 80%; (3) Add a decomposing agent to the mixture, mix it and stack it for fermentation to obtain organic fertilizer, but this method has many problems in actual operation and low economic benefits

[0008] Although the technical solutions disclosed above all use rural organic waste as the basic raw material to prepare solid organic fertilizers or liquid fertilizers, the method disclosed in CN106866185A relies on external heat supply to achieve 24h rapid fermentation to produce solid and liquid organic fertilizers. Large energy consumption, high operating cost, not enough for low-carbon economy; CN106001069A discloses a complete set of waste citrus treatment equipment and its production process for organic fertilizer; CN106631212A discloses a method for producing solid organic fertilizer using planting and breeding waste, which cannot be realized The low-energy, high-efficiency, and non-polluting systematic utilization of waste citrus cannot solve the actual problems in citrus producing areas

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