Vegetable and fruit waste integrated treatment process

Abstract

The present invention discloses a vegetable and fruit waste integrated treatment process. The vegetable and fruit waste integrated treatment process comprises: firstly carrying out dehydration treatment on vegetable and fruit waste; carrying out composting fermentation on the dehydrated vegetable and fruit waste together with sawdust that is mixed with a composite strain to obtain an organic fertilizer; and filtering the vegetable and fruit waste liquid obtained by dehydration, and then carrying out anaerobic treatment and aerobic treatment on the waste liquid separately so as to enable the output waste liquid to meet the emission standards. Compared with the prior art, the vegetable and fruit waste integrated treatment process integrates a composting method and a waste liquid treating method to carry out thorough treatment and resource utilization on the vegetable and fruit waste, so that the pollution of the vegetable and fruit waste and the waste liquid thereof on farmlands and environment is reduced, and the prepared organic fertilizer is high in nutrient element content.

Description

technical field [0001] The invention relates to a process for recycling vegetable and fruit wastes, in particular to an integrated treatment process for vegetable and fruit wastes. Background technique [0002] With the development of China's vegetable and fruit planting industry, the output of vegetables and fruits has increased year by year. In vegetable and fruit production bases, it is often seen that a large number of discarded vegetable seedlings and fruit and vegetable stems and leaves are randomly piled up. These wastes not only pollute the local air, soil and water bodies , It is also easy to breed mosquitoes and other pests, causing the spread of germs, affecting the health of the staff and the production safety of subsequent fruits and vegetables, and also causing a lot of waste of resources. [0003] At present, the treatment methods for vegetable and fruit waste are generally treated as garbage directly or anaerobic retting. Disposal of vegetable and fruit wast...

AI Technical Summary

Problems solved by technology

Disposal of vegetable and fruit wastes not only wastes a large amount of nitrogen, phosphorus, potassium and other nutrients rich in vegetable and fruit wastes, but also requires further landfill treatment or dehydration incineration; retting has the disadvantages of long time existence and low fertilizer efficiency

[0004] Chinese patent CN 103360131 A introduces a composting process of vegetable and fruit waste, which uses the combination of silt particles and rapeseed shells, and uses the nutrients contained in the silt itself to solve the problem of adding urea, phosphate fertilizer and other inorganic wastes in the traditional waste vegetable and fruit composting process. At the same time, the characteristics of loose rapeseed hulls and easy air circulation have been used to solve the technical difficulty of adding ventilation shafts in the traditional process to solve the oxygen necessary for the decomposition process of waste vegetable and fruit composting, which will not only solve the problem Disposal of waste vegetables and fruits, and the production of composted products in a completely green way, but its fertilizer efficiency is low

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