Method for preprocessing stalk with alkali and ozone

A pretreatment and ozone technology, applied in the field of agricultural waste straw treatment, can solve the problems of refractory lignin and cellulose degradation, low degradation rate, long treatment time, etc., and achieve improved degradation rate, low cost, high promotion and application effect of value

Inactive Publication Date: 2008-02-13
上海特石生态科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an alkaline ozone pretreatment method for straw in order to solve the problems of long treatment time in existin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] Example 1: Dry straw 100kg (moisture content 10%), water 890Kg, raw (slaked) lime 10Kg, the total amount of mixed liquid is 1000Kg, of which straw dry matter content is 9%, lime content is 1%, and ozone is used for generation The device passes ozone into the mixed material liquid, the amount of ozone is 5g / h, continues for 1 hour, and the material liquid is left standing for 6 hours to complete the pretreatment.

Example Embodiment

[0014] Example 2: Dry straw 20kg (moisture content 10%), water 478Kg, raw (slaked) lime 2Kg, the total amount of mixed liquid 500Kg, of which the straw dry matter content is 4.5%, the lime content is 0.4%, using ozone to generate The device passes ozone into the mixed material liquid, the amount of ozone is 2g / h, opens for 1 hour and stops for 2 hours, the cumulative ozone passing time is 4 hours, and the material liquid is left standing for 24 hours to complete the pretreatment.

Example Embodiment

[0015] Example 3: Dry straw 50kg (moisture content 10%), water 1438Kg, raw (slaked) lime 12Kg, the total amount of mixed liquid is 1500Kg, of which straw dry matter content is 3%, lime content is 0.8%, and ozone is used for generation The device passes ozone into the mixed material liquid, the amount of ozone is 3g / h, continues for 2 hours, and the material liquid stands still for 6 hours to complete the pretreatment.

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PUM

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Abstract

The invention belongs to the technical field of agricultural waste straw treatment, and specifically relates to a straw degradation pretreatment technology, which solves the problems of long processing time of existing straw biological or physical and chemical treatment methods, low degradation rate caused by difficult degradation of straw lignin and cellulose, etc. . Alkaline ozone pretreatment method of straw, mixing crushed straw with lime water, wherein straw (according to dry matter) accounts for 3%-15% of the total feed liquid, and lime accounts for 0.3%-1% of the total feed liquid , Introduce low-flux ozone into the mixed material liquid, and then let it stand. The invention kills all kinds of harmful bacteria carried in the straw, decomposes the pesticides that may remain in the straw, destroys the structure of the lignin and cellulose of the straw, and converts some macromolecular substances that are difficult to decompose into small molecules that are easy to degrade Substances, improve the degradation rate of lignin and cellulose in the straw during subsequent treatment, and speed up the subsequent treatment of straw.

Description

technical field [0001] The invention belongs to the technical field of agricultural waste straw treatment, and in particular relates to a straw degradation pretreatment technology. Background technique [0002] At present, the vast rural areas of our country produce about 800 million tons of crop straw every year, of which at least about 500 million tons of straw have not been effectively and rationally used, or are discarded or burned, causing serious pollution to the environment and waste The precious resources and energy contained in the straw have been removed. At present, people have explored many methods to degrade straws and realize turning waste into treasure. There are mainly the following types: [0003] 1) Straw ammoniated silage feed, generally the crushed straw is mixed with a certain proportion of urea or ammonia, and then closed stacking is carried out to improve the crude protein content and nutritional value of the straw; but due to the long ammoniation ti...

Claims

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Application Information

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IPC IPC(8): B09B3/00
Inventor 韩农
Owner 上海特石生态科技有限公司
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