Composite carbon source for deep denitrification of leather wastewater and preparation method thereof

A technology for deep denitrification and compound carbon source, applied in chemical instruments and methods, animal processing wastewater treatment, special compound water treatment, etc. Different effects, etc., to achieve the effect of improving biochemical treatment effect, accelerating decomposition, and enhancing adaptability

Inactive Publication Date: 2020-08-11
山东海景天环保科技股份公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] In the sewage treatment system, the denitrification process is completed by a series of mixed denitrification bacteria, which are different in type and growth stage. Therefore, a single carbon source cannot fully meet the needs of microbial growth.
In addition, different carbon sources have different effects on the denitrification process, even if the carbon source is added according to the same C / N, the effects are different

Method used

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  • Composite carbon source for deep denitrification of leather wastewater and preparation method thereof
  • Composite carbon source for deep denitrification of leather wastewater and preparation method thereof

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preparation example Construction

[0030] The application also provides a method for preparing a composite carbon source for deep denitrification of the leather wastewater, comprising the following steps:

[0031] Prepare sodium acetate solution according to mass percentage;

[0032] Dissolving sugars, alcohol compounds, nitrogen additives, phosphorus additives, and trace element supplements respectively according to the mass percentage content, and then sequentially mixing with sodium acetate solution to obtain a composite carbon source for deep denitrification of leather wastewater.

[0033] In the preparation process of the above-mentioned composite carbon source, the applicant first prepared a sodium acetate solution to ensure the amount of carbon source. In the present application, preferably adopt acetic acid and sodium carbonate to produce sodium acetate, promptly calculate the quality of required acetic acid and sodium carbonate according to the amount of sodium acetate, be respectively configured into ...

Embodiment 1

[0041] The preparation of a composite carbon source agent for deep denitrification of leather wastewater mainly includes the following steps:

[0042] Step 1: Preparation of 25% sodium acetate solution

[0043] 1) Preparation of 25% sodium carbonate solution: Weigh 63.3g of sodium carbonate, add 253mL of water, stir until completely dissolved, and obtain 25% sodium carbonate solution;

[0044] 2) Preparation of 48% acetic acid solution by volume: Weigh 91.5g (about 88mL) of acetic acid, add 95mL of water, and mix well to obtain the acetic acid solution;

[0045] 3) Add the acetic acid solution to the reactor, turn on the stirring device, set the rotation speed to 80r / min, slowly add the sodium carbonate solution to obtain the sodium acetate solution;

[0046] Step 2: Add carbohydrates

[0047] 1) Weigh 50g of starch, add to boiling water and stir until completely dissolved;

[0048] 2) Weigh 75g of industrial glucose, add it to the starch solution, and stir until completely...

Embodiment 2

[0060] The preparation of a composite carbon source agent for deep denitrification of leather wastewater mainly includes the following steps:

[0061] Step 1: Preparation of 30% sodium acetate solution.

[0062] 1) Preparation of 30% sodium carbonate solution: weigh 94.9g of sodium carbonate, add 271mL of water, stir until completely dissolved, and obtain 30% sodium carbonate solution;

[0063] 2) Preparation of 73% acetic acid solution by volume:

[0064] Weigh 137.2g (about 131mL) of acetic acid, add 48mL of water, and mix well to obtain the acetic acid solution;

[0065] 3) Add the acetic acid solution to the reactor, turn on the stirring device, set the rotation speed to 80r / min, slowly add the sodium carbonate solution to obtain the sodium acetate solution;

[0066] Step 2: Add carbohydrates

[0067] 1) Weigh 60g of starch, add to boiling water and stir until completely dissolved;

[0068] 2) Weigh 67.5g of industrial glucose, add it to the starch solution, and stir u...

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Abstract

The invention provides a composite carbon source for deep denitrification of leather wastewater. The composite carbon source comprises sodium acetate, carbohydrates, alcohol compounds, a nitrogen additive, a phosphorus additive and a trace element supplement. The invention also provides a preparation method of the composite carbon source for deep denitrification of leather wastewater. The composite carbon source provided by the invention can obviously improve the activity of denitrifying bacteria and other denitrifying microorganisms, enhance denitrification capacity and improve the biochemical denitrification effect of nitrogen-containing wastewater.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a composite carbon source for deep denitrification of leather wastewater and a preparation method thereof. Background technique [0002] In the existing deep denitrification process of leather wastewater, there is a common problem that the carbon source is insufficient to meet the denitrification demand. Therefore, adding external carbon sources to ensure the denitrification effect has become the choice of most sewage treatment plants. At present, the widely used carbon sources mainly include alcohols, sugars and sodium acetate, etc., and the dosing method is mainly a single type of carbon source. [0003] In the sewage treatment system, the denitrification process is completed by a series of mixed denitrification bacteria, which are different in type and growth stage. Therefore, a single carbon source cannot fully meet the needs of microbial growth. In addition, diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F103/24
CPCC02F3/34C02F2103/24C02F2305/06
Inventor 张映燕锡尧张英李杰秦军房立彬
Owner 山东海景天环保科技股份公司
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