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Acetic acid-magnesium acetate liquid carbon source as well as production process and application thereof

A liquid carbon source and production process technology, applied in chemical instruments and methods, biological water/sewage treatment, special compound water treatment, etc., can solve the problems of large influence on pH value of water body, easy crystallization of liquid products, inconvenient storage and transportation, etc. , to achieve the effect of less dosage, not easy to crystallize, and low production cost

Inactive Publication Date: 2020-10-27
焦作市煜乾环保科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The disadvantages of liquid sodium acetate are: high market price leads to high water treatment cost, high salt content in water, liquid products are easy to crystallize at low temperature in winter
The disadvantages of glacial acetic acid are: high acidity, inconvenient storage and transportation, great influence on the pH value of water body, and easy crystallization at low temperature in winter

Method used

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  • Acetic acid-magnesium acetate liquid carbon source as well as production process and application thereof

Examples

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Effect test

Embodiment 1

[0023] like figure 1 Shown, a kind of acetic acid-magnesium acetate liquid carbon source production technique comprises the following steps:

[0024] 1) At 40°C and normal pressure, lightly burned magnesium oxide powder was reacted with acetic acid solution for 2 hours to obtain a mixture with a pH value of 4.5~6.0;

[0025] 2) Press filter the mixture in a chamber filter press, and obtain filtrate, backwash water and filter residue after backwashing and air drying;

[0026] 3) Mix backwash water and filtrate at a mass ratio of 0.1:1 to obtain an acetic acid-magnesium acetate liquid carbon source with a pH value of 4.5-6.0.

[0027] Wherein, the light-burned magnesia powder is the burning product of magnesite powder at 400-600°C, its particle size is 100-200 mesh, and the MgO content is 80%; the concentration of the acetic acid solution is 20wt%; the acetic acid solution React with light-burned magnesia powder in an acid-resistant reactor, the mass ratio of MgO in the light-...

Embodiment 2

[0030] like figure 1 Shown, a kind of acetic acid-magnesium acetate liquid carbon source production technique comprises the following steps:

[0031] 1) At 35°C and normal pressure, lightly burned magnesium oxide powder was reacted with acetic acid solution for 3 hours to obtain a mixture with a pH value of 4.5~6.0;

[0032] 2) Press filter the mixture in a chamber filter press, and obtain filtrate, backwash water and filter residue after backwashing and air drying;

[0033] 3) Mix backwash water and filtrate at a mass ratio of 0.3:1 to obtain an acetic acid-magnesium acetate liquid carbon source with a pH value of 4.5-6.0.

[0034] Wherein, the light-burned magnesia powder is the burning product of magnesite powder at 400-600°C, its particle size is 100-200 mesh, and the MgO content is 82%; the concentration of the acetic acid solution is 25wt%; the acetic acid solution React with light-burned magnesia powder in an acid-resistant reactor, the mass ratio of MgO in the light-...

Embodiment 3

[0037] like figure 1 Shown, a kind of acetic acid-magnesium acetate liquid carbon source production technique comprises the following steps:

[0038] 1) At 45°C and normal pressure, lightly burned magnesium oxide powder was reacted with acetic acid solution for 2 hours to obtain a mixture with a pH value of 4.5~6.0;

[0039] 2) Press filter the mixture in a chamber filter press, and obtain filtrate, backwash water and filter residue after backwashing and air drying;

[0040] 3) Mix backwash water and filtrate at a mass ratio of 0.5:1 to obtain an acetic acid-magnesium acetate liquid carbon source with a pH value of 4.5-6.0.

[0041] Wherein, the light-burned magnesia powder is the burning product of magnesite powder at 400-600°C, its particle size is 100-200 mesh, and the MgO content is 80%; the concentration of the acetic acid solution is 30wt%; the acetic acid solution React with light-burned magnesia powder in an acid-resistant reactor, the mass ratio of MgO in the light-...

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Abstract

The invention belongs to the technical field of sewage treatment, and discloses an acetic acid-magnesium acetate liquid carbon source as well as a production process and application thereof. The production process comprises the following steps: (1) reacting light calcined magnesia powder with an acetic acid solution for 2-3 hours at the temperature of 40 + / -5 DEG C and normal pressure to obtain amixture with the pH value of 4.5-6.0; 2) carrying out filter pressing on the mixture, and carrying out backwashing and air drying to obtain a filtrate, backwashing water and filter residues; and 3) mixing part of the backwashing water with the filtrate to obtain the acetic acid-magnesium acetate liquid carbon source with the pH value of 4.5-6.0. The liquid carbon source for sewage treatment prepared by the invention has the advantages of high effective content, low production cost, less salt brought into water, a liquid product is not easy to crystallize at low temperature and does not changethe pH value of water.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an acetic acid-magnesium acetate liquid carbon source and its production process and application. Background technique [0002] In the sewage treatment process, in order to maintain the growth activity of microorganisms or to ensure the carbon-nitrogen ratio in the denitrification process, a certain amount of carbon source is usually added to the biochemical system to ensure the normal operation of the system or denitrification. Generally, carbon sources such as starch, glucose, methanol, acetic acid and sodium acetate are added to the system. Among these carbon sources, glacial acetic acid and liquid sodium acetate are used by most sewage treatment plants because of their high utilization efficiency and convenient use. [0003] The disadvantages of liquid sodium acetate are: the high market price leads to high water treatment costs, high salt content in the ...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/28
CPCC02F3/34C02F3/28C02F2305/06
Inventor 胡先国张彬彬
Owner 焦作市煜乾环保科技有限公司
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