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Method for recovering carbon resources in humic acid wastewater

A resource recovery and humic acid technology, which is applied in the field of carbon resource recovery in humic acid wastewater, achieves the effects of efficient separation and recovery, low cost and simple process

Inactive Publication Date: 2019-12-17
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As far as is known, most studies to date have focused on the indirect assessment of flocculation performance, however direct use of APTES for organic matter removal remains to be investigated

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  • Method for recovering carbon resources in humic acid wastewater

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Embodiment Construction

[0022] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0023] A method for recovering carbon resources in humic acid wastewater. (3-Aminopropyl)triethoxysilane (APTES) is directly put into humic acid (HA) wastewater, flocculated and precipitated, and the precipitate is filtered to obtain humic acid separation The product realizes the recovery of carbon resources in humic acid wastewater.

[0024] It includes the following steps:

[0025] (1) Put the humic acid wastewater in a constant temperature water bath and stir:

[0026] (2) After adjusting the pH to 3-7, put in (3-aminopropyl)triethoxysilane;

[0027] (3) Stir at high speed first, then stir at low speed, stand still for flocculation and sedimentation;

[0028] (4) Filter the sediment to obtain humic acid separation products, and realize the recovery of carbon resources in humic acid wastewater.

[0029] More specifically, the concentration of humic acid in the humic...

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Abstract

The invention relates to a method for recovering carbon resources in humic acid wastewater, and the method comprises the following steps: directly adding (3-aminopropyl) triethoxysilane into the humicacid wastewater, carrying out flocculation precipitation, and filtering the precipitate to obtain a humic acid separation product, thereby implementing recovery of the carbon resources in the humic acid wastewater. Compared with the prior art, the humic acid separation and precipitation process is simple, the cost is low, the carbon resources in the wastewater can be efficiently recycled, and high economic and social environmental benefits are achieved.

Description

Technical field [0001] The invention belongs to the technical field of environmental protection, and particularly relates to a method for recycling carbon resources in humic acid wastewater. Background technique [0002] Humic acid (HA) comes from the microbial degradation of biological molecules and is the main component of humus. The high affinity of humus makes it easy to complex with various pollutants such as heavy metals and pesticides, leading to surface water and groundwater pollution. Humus mainly includes humic acid, fulvic acid and humin, which are typical naturally occurring compounds, accounting for 30%-80% of dissolved organic matter in natural water bodies, which not only affects water quality, but also is not conducive to water treatment. [0003] Humic acid in wastewater is a rich carbon resource, and its separation and extraction also provide important support for carbon resource recycling. (3-Aminopropyl)triethoxysilane (APTES) has been widely used to modify in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08H7/00
CPCC08H6/00
Inventor 周涛赵由才武舒娅李天伍娜
Owner TONGJI UNIV