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A preparation method of fluoride removal material based on biomass solid waste

A solid waste and biomass technology, applied in chemical instruments and methods, water/sludge/sewage treatment, adsorbed water/sewage treatment, etc., can solve secondary pollution, occupation of land resources, and inefficient use of waste and other problems, to achieve the effect of fast defluorination, reduced pollution and convenient operation

Active Publication Date: 2017-05-03
湖南烯富环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the biomass waste is disposed of through landfill, incineration and composting, which not only takes up a lot of land resources, but also may cause secondary pollution. More importantly, these wastes have not been efficiently used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of fluorine-removing materials using straw, cow dung, quicklime, and magnesium-aluminum sulfate as raw materials and its effect on treating neutral fluoride-containing water

[0035] The preparation steps of the present embodiment defluoridation material:

[0036] Step 1: Preparation of Biomass Binder

[0037]Soak straws with an average size of ≤3mm in water 8-10 times the mass of the straws for 3 days, add slaked lime equivalent to 30% of the mass of the straws, stir evenly, then heat to 95-100°C and keep it warm for 3 hours to obtain a yellow viscous substance , adding phosphoric acid accounting for 10% of its volume to the yellow viscous substance, and stirring evenly to obtain a biomass binder;

[0038] Step 2: Hydrothermal Treatment of Cow Manure

[0039] First, add cow dung crushed to less than 3mm and aluminum sulfate and magnesium sulfate salt of the same cow dung quality into water to prepare a slurry with a liquid-solid ratio of 1. The molar rati...

Embodiment 2

[0052] Preparation of fluorine-removing materials using straw, animal bone, quicklime, and magnesium-aluminum chloride salts as raw materials and their fluorine removal effects in electrolytes in zinc electrodeposition

[0053] The preparation steps of the present embodiment defluoridation material:

[0054] Step 1: Preparation of Biomass Binder

[0055] Soak straws with an average size of ≤3mm in water 8-10 times the mass of the straws for 1 day, add slaked lime equivalent to 35% of the mass of the straws, stir evenly, then heat to 95-100°C and keep it warm for 3 hours to obtain a yellow viscous substance , add phosphoric acid accounting for 20% of its volume to the yellow viscous substance, and stir evenly to obtain a biomass binder;

[0056] Step 2: Hydrothermal Treatment of Animal Bone

[0057] Firstly, add aluminum chloride and magnesium nitrate salt crushed to less than 3 mm of animal bone and half the weight of animal bone into water to prepare a slurry with a liquid-...

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Abstract

The invention discloses a preparation method of a defluorination material based on biomass solid wastes. The biomass solid wastes are one of crop straws, kitchen wastes, food processing wastes, organic parts in domestic wastes and animal night soils, or are an organic solid mixture formed by mixing two or more thereof. The preparation method comprises the following steps: preparing a biomass binder, preprocessing the biomass solid wastes to obtain a dry base material, mixing the dry base material with the binder, molding, and carrying out high temperature heat treatment. The method has the advantages of simplicity and convenient operation, and the defluorination material prepared by adopting the biomass solid wastes as the main raw material can efficiently remove fluorine in general industrial waste water and nonferrous metal electrodeposition electrolytes, can realize efficient removal of fluorine from water with a wide pH value range, realizes control of harms by using wastes, and improves the utilization values of the domestic wastes and the biomass wastes. The preparation method is suitable for industrial production and application.

Description

technical field [0001] The present invention relates to the utilization technology of biomass solid waste, in particular to a method for preparing a fluorine-removing material based on biomass solid waste. The fluoride-removing material can efficiently remove fluorine from general industrial waste water and electrolytes for electrodeposition of non-ferrous metals . The invention belongs to the technical field of water treatment material preparation. Background technique [0002] Fluorine-containing wastewater in my country has the characteristics of complex composition, large water volume, and wide distribution. Fluoride-containing wastewater mainly comes from fluorine chemical industry, steel production, aluminum electrolysis and aluminum processing, acid production and sulfide-containing fertilizer production, glass product manufacturing and processing, Non-ferrous metal smelting and other industries. At the same time, the fluorine content in surface water and groundwater ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/58
Inventor 周向清张志敏
Owner 湖南烯富环保科技有限公司
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