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Resource utilization method based on plant fibrous agricultural wastes

A technology of agricultural waste and plant fiber, which is applied in the field of agricultural waste treatment, can solve the problems of surrounding air pollution, foul smell, and affecting the health of surrounding residents, so as to reduce the amount of manual labor, smooth air circulation, and improve biological dryness. The effect of chemical efficiency

Pending Publication Date: 2022-04-05
BEIJING VOCATIONAL COLLEGE OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Storing sludge only transfers the sludge, and does not completely eliminate the hazards it produces. Many problems will arise during long-term storage: (1) secondary pollution to soil and groundwater; (2) foul smell, Lead to ambient air pollution and breeding of mosquitoes and flies; (3) Occupy a large amount of land, resulting in waste of land resources; (4) Affect the health of surrounding residents

Method used

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  • Resource utilization method based on plant fibrous agricultural wastes
  • Resource utilization method based on plant fibrous agricultural wastes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A resource utilization method based on plant fibrous agricultural waste, comprising the following steps: cutting the straw from Heilongjiang into 2-3cm long straw sections for later use, the moisture content of the straw is 10%; the prepared moisture content is 80% , the pH value is 7.1, the volatile solid content is 50%, and the C / N is 4. The storage sludge is used for later use. The storage sludge and rice straw are mixed evenly according to the mass ratio (wet weight) of 5:1, and put into the biological drying Bio-drying is carried out in the reactor; the outer wall of the bio-dryer is tightly wrapped with thermal insulation cotton with a thickness of 15cm to prevent heat loss, and the ventilation pipe is connected to the bottom of the bio-drying reactor, and the cycle of aeration and ventilation is 30 minutes Carry out aeration and ventilation treatment, in each cycle, ventilate for 10 minutes and then close for 20 minutes. This cycle, the aeration and ventilation ra...

Embodiment 2

[0030] A resource utilization method based on plant fibrous agricultural waste, comprising the following steps: cutting wheat straw from Shandong into 2-3 cm long straw sections for later use, the moisture content of the wheat straw is 12%; the prepared moisture content is 82%, the pH value is 7.0, the volatile solid content is 50%, and the C / N is 4.2. The storage sludge is used for later use. The storage sludge and wheat straw are mixed evenly according to the mass ratio (wet weight) of 5:1, and put into Biological drying is carried out in the biological drying reactor; the outer wall of the biological drying reactor is tightly wrapped with thermal insulation cotton with a thickness of 20cm to prevent heat loss. Aeration and ventilation treatment is carried out in the gas ventilation cycle. In each cycle, it is ventilated for 10 minutes and then closed for 25 minutes. In this cycle, the aeration and ventilation rate is 1.2L / (min kg) wet material, fully stirred once every 4 day...

Embodiment 3

[0032] A resource utilization method based on plant fibrous agricultural waste, comprising the following steps: cutting corncobs from Shandong into corncobs with a length of 2 to 3 cm for later use, and the moisture content of the corncobs is 15%; 75%, the pH value is 7.4, the volatile solid content is 55%, and the C / N is 4.1. The storage sludge is used for later use. The storage sludge and corn cob are mixed evenly according to the mass ratio (wet weight) of 7:1, and put into the biological drying reactor for biological drying; the outer wall of the biological drying reactor is tightly wrapped with thermal insulation cotton with a thickness of 10cm to prevent heat loss, and the ventilation pipe is connected to the bottom of the biological drying reactor, and the time is 40min. The aeration and ventilation cycle is carried out for aeration and ventilation treatment. In each cycle, it is ventilated for 15 minutes and then closed for 25 minutes. This cycle is repeated. The aerati...

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Abstract

The invention provides a resource utilization method based on plant fibrous agricultural wastes, and relates to the technical field of agricultural waste treatment. The invention discloses a resource utilization method based on plant fibrous agricultural wastes. The resource utilization method comprises the following steps: cutting the plant fibrous agricultural wastes into sections for later use; and uniformly mixing the stored sludge with the plant fibrous agricultural wastes, adding the mixture into a biological drying reactor, and carrying out biological drying treatment in an intermittent aeration and ventilation manner. Sludge stored for a long time is large in viscosity and low in C / N, compared with fresh sludge, the content of organic matter and aerobic microorganisms is lower, the content of anaerobic microorganisms is high, and the content of C / N and porosity of plant fiber agricultural waste are high. The method not only can realize resource utilization of plant fibrous agricultural wastes, but also can solve a series of problems caused by sludge storage, and is of great significance to beautiful rural construction and ecological civilization construction.

Description

technical field [0001] The invention relates to the technical field of agricultural waste treatment, in particular to a resource utilization method based on plant fibrous agricultural waste. Background technique [0002] There are many types of waste in agricultural production, mainly including plant fibrous agricultural waste (mainly including agricultural product processing waste such as crop straw, chaff, fruit shell and bagasse) and livestock manure according to its composition. Although the comprehensive utilization rate of agricultural waste has been significantly improved, there are still problems such as resource waste and environmental pollution. At present, the resource utilization technologies of plant fiber waste mainly include returning waste to fields, processing feed, solidifying carbonization, gasification, and making composite materials, etc. However, there are few reports on the use of plant fibrous agricultural wastes in biological drying of stored sludge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02C02F11/12B09B3/60B09B3/35B09B101/85
Inventor 刘甜甜焦有权吴小苏刘俊峰何晓龙
Owner BEIJING VOCATIONAL COLLEGE OF AGRI
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