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Denitrification wood carbon source carbon release amount regulation and control method based on reducing sugar yield, wood carbon source and application

A sugar yield and denitrification technology, applied in chemical instruments and methods, special data processing applications, anaerobic digestion treatment, etc., can solve the problems of reduction, poor reaction effect, secondary pollution service life, etc., to ensure the treatment effect , easy to control, good effect

Active Publication Date: 2021-12-31
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the deficiencies in the prior art and provide a method for regulating the amount of carbon released from denitrified woody carbon sources based on the reducing sugar yield. Establish the relationship between the reducing sugar yield of woody carbon sources and treatment chemicals, as well as the relationship between reducing sugar yields and denitrification rate, so that the carbon release capacity of woody carbon sources can be adjusted according to actual conditions when treating woody carbon sources , to obtain the required carbon source, avoiding the poor reaction effect caused by too little carbon release as a carbon source, and the secondary pollution and reduced service life caused by too much carbon release

Method used

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  • Denitrification wood carbon source carbon release amount regulation and control method based on reducing sugar yield, wood carbon source and application
  • Denitrification wood carbon source carbon release amount regulation and control method based on reducing sugar yield, wood carbon source and application
  • Denitrification wood carbon source carbon release amount regulation and control method based on reducing sugar yield, wood carbon source and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] build equation

[0093] (1) Choose 0.1-1.0mm poplar wood chips as raw materials, weigh 6 parts, each 5.0g, add 0.0, 0.03, 0.06, 0.10, 0.15 and 0.20g / g respectively 碳源 Ca(OH) 2 , control the solid-liquid ratio to 1:10, and react at 90°C and 150rmp for 24h. After the reaction, perform repeated suction filtration and water washing until the filtrate is neutral, and dry the solid sample at 60°C.

[0094] The prepared samples were hydrolyzed with specific enzymes, adding 20FPU of cellulase and 20CBU of β-glucosidase per gram of sample, hydrolyzing at 50°C for 3 days, using the DNS method to measure the reducing sugar content in the filtrate, and The reducing sugar yield was calculated and the results are shown in Table 1.

[0095] Table 1 The reducing sugar yield of chip wood under the condition of calcium hydroxide dosage

[0096]

[0097] Establish reducing sugar yield y 1 and Ca(OH) 2 dosage x 1 relationship, the curve is as figure 1 As shown, according to the f...

Embodiment 2

[0104] Determination of the Target Reducing Sugar Yield of Woody Carbon Sources under the Water Environment Conditions to be Tested

[0105] To simulate the environmental conditions of nitrate concentration of 100mg / L, temperature of 25°C and pH value of 7, 5.0g of untreated

[0106] Processing and C 2 h 4 o 3 Treatment of woody carbon sources for denitrification batch trials. After testing, C 2 h 4 o 3 The reducing sugar yield of processing woody carbon source is higher, which is 553.0mg / g 碳源 , is the reducing sugar yield of untreated woody carbon source (31.3mg / g 碳源 ) 17.7 times.

[0107] The specific process of the denitrification test is as follows: Weigh 5.0g of woody carbon source into a 500mL glass bottle, add 400mL of simulated nitrate sewage, and the NO of sewage 3 - The -N concentration is 100.0 mg / L and the pH value is 7; the sample bottle is aerated with nitrogen for 20 minutes, sealed with a rubber stopper, and placed in a biochemical incubator for culti...

Embodiment 3

[0110] Determining the woody carbon source for the required carbon release under the water environment conditions to be tested

[0111] Obtaining woody carbon source target reducing sugar yield in embodiment 2 is 122.1mg / g 碎木 , according to the interval obtained in Example 1, the target reducing sugar yield is within the first reducing sugar interval range, so the first equation is used to calculate, and Ca(OH) is obtained during the preparation of woody carbon source 2 The dosage is 0.077g Ca(OH) 2 / g 碳源 , and reacted at 90°C for 24 hours to obtain a woody carbon source with the desired amount of carbon released.

[0112] To simulate the environmental conditions of nitrate concentration of 100mg / L, temperature of 25°C and pH value of 7, 5.0g of untreated and Ca(OH) 2 Treatment of woody carbon sources for verification trials.

[0113] Weigh 5.0g of woody carbon source into a 500mL glass bottle, add 400mL of simulated nitrate sewage, and the NO of sewage 3 - The -N concen...

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Abstract

The invention provides a denitrification wood carbon source carbon release amount regulation and control method based on reducing sugar yield, the method comprises the following steps: determining an optimal value of a denitrification rate through a test under a simulated application environment condition to obtain a reducing sugar yield target value suitable for the wood carbon source under the same application environment condition, and then substituting the target reducing sugar yield into a corresponding equation according to the established relationship between the reducing sugar yield and the Ca (OH) 2 amount and the relationship between the reducing sugar yield and the C2H4O3 amount so that proper treatment conditions are determined, and the purpose of regulating and controlling the carbon release amount of the wood carbon source is achieved. According to the regulation and control method, the carbon release capacity of the wood carbon source can be regulated and controlled according to actual conditions, the required carbon source is obtained, and the problems of poor reaction effect caused by too small carbon release amount of the carbon source and secondary pollution caused by too large carbon release amount are avoided.

Description

technical field [0001] The invention relates to the technical field of preparation of denitrifying woody carbon sources, in particular to a method for regulating the release of carbon from denitrifying woody carbon sources based on reducing sugar yield, woody carbon sources and applications thereof. Background technique [0002] Nitrate is one of the four main pollutants in groundwater, which has the characteristics of being threatened by human beings, having a wide distribution of pollution range, strong migration ability and complicated pollution pathways. Sewage and garbage discharge in rural areas is an important source of nitrate pollution in groundwater. Sewage and garbage discharged from rural life and livestock and poultry breeding contain a large amount of nitrogen-containing substances, which are converted into nitrate with strong mobility under natural action , a large amount of nitrate exceeds the natural purification capacity, which makes the nitrate continue to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28G06F30/20G06F17/11G06F119/14C02F101/16
CPCC02F3/28G06F30/20G06F17/11C02F2101/163C02F2305/06G06F2119/14
Inventor 胡荣庭李鑫陈余道陈广林祖凌鑫李学强
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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