Method for jointly treating different garbage

Abstract

The invention discloses a method for jointly treating different garbage. In the implementation process, different garbage is subjected to pretreatment, homogenization, anaerobic digestion, flocculation dewatering, denitrification, oxidation treatment, membrane bioreactor treatment, aerobic composting and biodiesel production, treated sewage can reach the third grade Standard of Water Pollutants Discharge of DB11 / 307-2005, the process flow is greatly shortened, the cost is reduced, and methane generated in the treatment process and the recovered waste oil are subjected to deep processing to beutilized as green energy.

Description

technical field [0001] The invention relates to a method for treating garbage, in particular to a method for joint treatment of multiple kinds of garbage. Background technique [0002] In people's life, all kinds of garbage are produced, such as solid domestic garbage, kitchen waste, fruit and vegetable garbage, human and animal manure, domestic sewage, landfill leachate, etc. In order to control the environment and eliminate pollution, under the existing technology and management system, my country has established landfills, kitchen treatment plants, excrement disposal stations, and domestic sewage treatment plants according to pollution types. Therefore, these factories (stations, fields) need to occupy land separately, design separately, and require separate equipment and treatment, which wastes a lot of resources and land; during treatment, due to the limited composition or qualitative change of a single substance, it is difficult to deal with or increase the treatment. ...

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Problems solved by technology

Therefore, these factories (stations, fields) need to occupy land separately, design separately, and require separate equipment and treatment, which wastes a lot of resources and land; during the treatment, due to the limited composition or qualitative change of a single substance, it is difficult to deal with or increase the treatment. Difficulty, if the carbon content in the vegetable waste is relatively high, and the nitrogen and phosphorus are relatively lacking, the effect of microbial treatment alone will be extremely poor; such as food waste, it is very easy to acidify during storage, and the pH can be reduced to below 4, and anaerobic treatment During treatment, it is necessary to add a large amount of alkaline substances to neutralize before biological treatment can be carried out; solid domestic waste is landfilled, which occupies a large amount of land and produces secondary pollution, such as landfill leachate. As we all know, nitrogen in landfill leachate The high content of carbon, nitrogen and phosphorus causes a serious imbalance in the ratio of carbon, nitrogen and phosphorus, and contains heavy metals, so the discharge after biological treatment is far from reaching the standard, and nanofiltration or reverse osmosis treatment is required. The concentrated water after nanofiltration or reverse osmosis treatment is not easy The cost of treatment or treatment is very high; the phosphorus content in feces and domestic sewage is relatively high, and phosphorus removal facilities and chemicals need to be added during the treatment process, which increases the treatment cost and prolongs the process

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