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Plant waste based desulfurization wastewater treatment reagent as well as preparation process and application thereof

A plant waste and plant waste technology, which is applied in the field of plant waste-based desulfurization wastewater treatment reagents, can solve the problems of difficult and large-scale application, low waste utilization rate, low wastewater treatment efficiency, etc., so as to improve the utilization rate and improve Water quality, high value-added effects

Pending Publication Date: 2021-08-20
HUANENG JIAXIANG POWER GENERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, a variety of methods for preparing wastewater adsorbents using plant wastes as raw materials have been disclosed. For example, wastes containing phenolic hydroxyl chemical components such as cotton stalk husks and cotton boll shells can be made into polymeric adsorbents after simple chemical treatment. Cation exchange resin has obvious absorption effect on heavy metals, and can be used for the adsorption of heavy metals in wastewater; a kind of industrial wastewater treatment agent can be prepared with straw shells as raw materials, but the inventors found that these existing methods all have waste The problem of low utilization rate and low efficiency of wastewater treatment makes it difficult to carry out large-scale application

Method used

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  • Plant waste based desulfurization wastewater treatment reagent as well as preparation process and application thereof
  • Plant waste based desulfurization wastewater treatment reagent as well as preparation process and application thereof
  • Plant waste based desulfurization wastewater treatment reagent as well as preparation process and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1. Take the dried peanut stalks, walnut stalks and sunflower stalks, wash and remove the soil, mix and dry, and grind them with a pulverizer. Then prepare the preparation solution that the concentration of sulfuric acid is 1%, the concentration of sodium sulfate is 1%, and the concentration of iron sulfate is 2%, and the mixed fruit shell particles after the pulverization are added in the preparation solution, and the pressure reactor is used as the reaction vessel. The liquid is pressurized and heated at a pressure of 0.3MPa and a heating temperature of 110°C. After cooling, the straw particles are filtered and separated from the water body, washed three times with clean water, and dried to obtain a desulfurization wastewater treatment reagent.

[0044] 2. Taking the desulfurization wastewater of Huaneng Jiaxiang, Yunhe and Jining power plants as the treatment objects, the prepared reagents are used to treat the desulfurization wastewater.

[0045] 3. After the treatme...

Embodiment 2

[0049] 1. Take the dried corn leaves, fallen leaves of forest trees and fallen leaves of fruit trees, wash and remove the soil, mix and dry, and pulverize with a pulverizer. The concentration of sulfuric acid is 3%, the concentration of sodium sulfate is 2%, and the concentration of iron sulfate is 2%. Add the crushed leaf particles into the preparation liquid, use the pressurized reactor as the reaction vessel, pressurize and heat the mixed liquid, the pressurized pressure is 0.3MPa, and the heating temperature is 100 ° C. After cooling, the straw The particles are separated from the water body by filtration, washed three times with clean water, and dried to obtain a desulfurization wastewater treatment reagent.

[0050] 2. Taking the desulfurization wastewater of Huaneng Jiaxiang, Yunhe and Jining power plants as the treatment objects, the prepared reagents are used to treat the desulfurization wastewater.

[0051] 3. After the treatment process, analyze the treated desulfur...

Embodiment 3

[0055] 1. Take the dried peanut shells, walnut shells and sunflower shells, wash and remove the soil, mix and dry, and pulverize with a pulverizer. The concentration of sulfuric acid is 1%, the concentration of sodium sulfate is 1%, and the concentration of iron sulfate is 2%. % of the preparation solution, the crushed fruit shell particles are added to the preparation solution, and the pressurized reactor is used as the reaction vessel to pressurize and heat the mixed solution. The pressurized pressure is 0.6MPa, and the heating temperature is 130°C. , the straw particles are filtered and separated from the water body, washed three times with clean water, and dried to obtain a desulfurization wastewater treatment reagent.

[0056] 2. Taking the desulfurization wastewater of Huaneng Jiaxiang, Yunhe and Jining power plants as the treatment objects, the prepared reagents are used to treat the desulfurization wastewater.

[0057] 3. After the treatment process, analyze the treate...

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Abstract

The invention belongs to the field of plant waste recycling, and particularly relates to a plant waste-based desulfurization wastewater treatment reagent as well as a preparation process and application thereof. The preparation process comprises the following steps of cleaning, drying and crushing waste plant straws, waste plant leaves or waste plant shells, and carrying out chemical modification to obtain a desulfurization wastewater treatment reagent. The chemical modification is carried out in a preparation solution formed by mixing sulfuric acid, sodium sulfate and ferric sulfate under a pressurizing and heating condition. The preparation liquid formed by mixing the sulfuric acid, the sodium sulfate and the ferric sulfate is subjected to chemical modification under the pressurizing and heating conditions, and the obtained desulfurization wastewater treatment reagent has excellent wastewater treatment capacity and can efficiently reduce various heavy metal ions in desulfurization wastewater. Meanwhile, the plant wastes at various parts are respectively modified, so that the utilization rate of the plant wastes can be greatly increased, and a chemical modification process is further assisted to obtain the high-performance desulfurization wastewater treatment reagent.

Description

technical field [0001] The invention belongs to the field of plant waste reuse, and in particular relates to a plant waste-based desulfurization wastewater treatment reagent and its preparation process and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] China is a large agricultural production country, and a large amount of plant waste is produced every year. Plant waste mainly includes plant fibrous waste, such as straw, weeds, fruit shells, etc., and the current way to deal with plant waste is mainly burning, which is relatively Less can be transformed into derivative products with high added value, and burning not only does not fully tap the application va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F1/52C02F1/28C02F103/18C02F101/20
CPCC02F1/56C02F1/5236C02F1/28C02F2101/20C02F2103/18
Inventor 王钢
Owner HUANENG JIAXIANG POWER GENERATION CO LTD
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