Free radical reinforced wet garbage anaerobic fermentation biogas residue stabilizing treatment agent and treatment method thereof

A stabilizing treatment agent and anaerobic fermentation technology, applied in the direction of climate change adaptation, organic fertilizer, etc., can solve the problems of inability to apply soil directly, low germination index, process instability, etc., to improve the ecological environment in urban and rural areas, and promote The effect of fertilizer utilization and promotion of humification process

Pending Publication Date: 2022-04-01
SHANGHAI LAOGANG WASTE DISPOSAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the instability of the source products and process of aerobic composting, the quality of composted products is also not up to standard
[0003] The results of basic physical and chemical testing, nutritional index testing, maturity testing and heavy metal testing of wet waste biogas residues produced after garbage classification show that biogas residues have high nutritional content and low biological toxicity, and have good resource utilization Potential, but high pH and EC values ​​affect the reuse of biogas residues, while the extremely low humus content and germination index indicate that biogas residues have high phytotoxicity and cannot be directly applied to soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The selected chemical reagent in this embodiment is a 30% hydrogen peroxide solution. Prepare the following raw materials in parts by weight:

[0031] After anaerobic fermentation, 199 parts of biogas residue and 1 part of hydrogen peroxide solution were obtained; the above raw materials were uniformly mixed to obtain a mixture, and the mixture was stored for 30min and then placed in an oven for drying for 10h, and the oven temperature was set to 70°C.

[0032] Wherein, the mixture is composed of biogas residue and hydrogen peroxide solution in a weight ratio of 1:199.

[0033] The moisture content of the mixture was reduced to 68.5%.

Embodiment 2

[0035] The selected chemical reagent in this embodiment is ferrous sulfate heptahydrate. Prepare the following raw materials in parts by weight: 199 parts of biogas residue after anaerobic fermentation, 1 part of hydrogen peroxide solution; uniformly mix the above raw materials to obtain a mixture, store the mixture for 30min and then put it into an oven for drying for 10h , the oven temperature was set to 70 °C.

[0036] Wherein, the mixture is composed of biogas residue and ferrous sulfate heptahydrate in a weight ratio of 1:199.

[0037] The moisture content of the mixture was reduced to 65.03%.

Embodiment 3

[0039] In this embodiment, the selected chemical reagent is potassium persulfate in mass fraction. Prepare the following raw materials in parts by weight: 196 parts of biogas residue after anaerobic fermentation, and 4 parts of potassium persulfate; uniformly mix the above raw materials to obtain a mixture, store the mixture for 30min and then put it into an oven for drying for 10h , the oven temperature was set to 60 °C.

[0040] Wherein, the mixture is composed of biogas residue and potassium persulfate in a weight ratio of 1:50.

[0041] The drying effect reduces the moisture content of the mixture to 50%-60%.

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Abstract

The invention discloses a free radical reinforced wet garbage anaerobic fermentation biogas residue stabilizing treatment agent which is characterized by comprising the following components in parts by weight: 196-199 parts of anaerobic fermentation biogas residue which is obtained by performing anaerobic fermentation on wet garbage subjected to dry-wet separation, 1-4 parts of a free radical oxidant and 1-3 parts of a stabilizing agent, the oxidizing agent is any one or more of ferrous sulfate heptahydrate, hydrogen peroxide or potassium persulfate. The invention further discloses a treatment method of the device. According to the method, the oxidizing agent is combined with the low-temperature drying means, so that the stabilization process of the biogas residues is promoted. In the process, macromolecular organic matters are converted into stable micromolecules, so that the treated biogas residues are not easy to stink and decay, the humification process of the biogas residues is promoted, and the fertilizer utilization of the biogas residues is promoted.

Description

technical field [0001] The invention belongs to the technical field of anaerobic fermentation biogas residue resource utilization, and particularly relates to a free radical-strengthened wet garbage anaerobic fermentation biogas residue stabilization treatment agent and a treatment method thereof. Background technique [0002] After wet garbage compost is applied to the farmland, it can provide certain nutrients and organic matter for agricultural and forestry crops. It is not only a soil conditioner, but also a high-quality fertilizer. However, due to the instability of aerobic composting source products and technological processes, the quality of composted products is also not satisfactory. [0003] The results of basic physical and chemical testing, nutritional index testing, composting degree testing and heavy metal testing of the wet garbage digester produced after garbage classification show that the digester has high nutritional content and low biological toxicity, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F9/04
CPCY02A40/20
Inventor 张美兰周海燕陈跃卫卢明唐佶缪春霞王蕊周涛
Owner SHANGHAI LAOGANG WASTE DISPOSAL CO LTD
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