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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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  • Summary
  • Abstract
  • Description
  • Claims
  • 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 existing straw biological or physical and chemical treatment methods, low degradation rate caused by difficult degradation of straw lignin and cellulose, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: dry stalk 100kg (moisture content 10%), water 890Kg, raw (slaked) lime 10Kg, feed liquid total amount 1000Kg after mixing, wherein stalk dry matter content is 9%, lime content is 1%, uses ozone to generate The device passes ozone into the mixed feed liquid, the amount of ozone is 5g / h, continuously for 1 hour, and the feed liquid is left to stand for 6 hours to complete the pretreatment.

Embodiment 2

[0014] Embodiment 2: dry stalk 20kg (moisture content 10%), water 478Kg, raw (slaked) lime 2Kg, feed liquid total amount 500Kg after mixing, wherein stalk dry matter content is 4.5%, lime content is 0.4%, uses ozone to generate The device passes ozone into the mixed feed liquid, the amount of ozone is 2g / h, it is turned on for 1 hour and stopped for 2 hours, the accumulated ozone time is 4 hours, and the feed liquid is left to stand for 24 hours to complete the pretreatment.

Embodiment 3

[0015] Embodiment 3: dry stalk 50kg (moisture content 10%), water 1438Kg, raw (slaked) lime 12Kg, feed liquid total amount 1500Kg after mixing, wherein stalk dry matter content is 3%, lime content is 0.8%, uses ozone to generate The device passes ozone into the mixed feed liquid, the amount of ozone is 3g / h, and lasts for 2 hours, and the feed liquid is left to stand for 6 hours to complete the pretreatment.

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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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