Multi-core composite carbon source for strengthening nitrogen removal during sewage treatment

A sewage treatment and composite technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, special compound water treatment, etc., can solve the problem of large dosage of glucose, high operating cost, weakening of denitrifying bacteria Denitrification ability and other issues, to achieve the effect of good applicability, less carbon source consumption, and enhanced bacterial diversity and activity

Active Publication Date: 2018-09-28
神美科技有限公司
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  • Description
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Problems solved by technology

[0007] The present invention aims to solve the problems of strengthening the denitrification in the biochemical section of the sewage treatment plant and adding common carbon sources such as sodium acetate and glucose, which have a large dosage, high operating costs, and the long-term addition of a single carbon source will weaken the denitrification ability of the denitrifying bacteria group. , mainly by adding the types of carbon sources required by microorganisms, inorganic salts and growth probiotics to increase the activity of denitrifying bacteria and the rate of denitrification, to provide a low-cost, green environmental protection, less dosage, high COD effective value, reverse digestion High efficiency, which is conducive to strengthening the diversity of bacterial flora, and at the same time, it is a multi-nuclear composite carbon source with good applicability to water quality and flora

Method used

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  • Multi-core composite carbon source for strengthening nitrogen removal during sewage treatment

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Embodiment 1

[0021] Add 100g of starch to 880g of hot water at 70°C, stir to fully gelatinize the starch liquid, then add 10g of hydrochloric acid and 10g of acetic acid under stirring, hydrolyze at 80°C for 1 hour, cool down to below 50°C, and add NaOH until the pH of the solution is between 5.5 and 7, then add 0.1g of yeast extract and 0.01g of vitamin B 1 , 0.01g MgSO 4 , 0.01g K 2 SO 4 , stir evenly, filter with a filter bag filter and decolorize with an activated carbon filter to obtain a multi-nuclear composite carbon source.

Embodiment 2

[0023] Add 200g of starch to 770g of hot water at 70°C, stir to fully gelatinize the starch liquid, then add 10g of hydrochloric acid and 20g of acetic acid under stirring, hydrolyze at 90°C for 1 hour, cool down to below 50°C, and add NaOH until the pH value of the solution is between 5.5 and 7, then add 0.5g peptone and 0.03g vitamin B 12 , 0.03g MgSO 4 , 0.03g K 2 SO 4 , stir evenly, filter with a filter bag filter and decolorize with an activated carbon filter to obtain a multi-nuclear composite carbon source.

Embodiment 3

[0025] Add 300g of starch to 645g of hot water at 70°C, stir to make the starch liquid fully gelatinized, then add 20g of sulfuric acid and 35g of acetic acid under stirring, hydrolyze at 95°C for 1 hour, cool down to below 50°C, and add NaOH Until the pH value of the solution is between 5.5 and 7, then add 2g of yeast extract, 2g of peptone, and 0.05g of vitamin B 12 , 0.05g MgSO 4 , 0.05gK 2 SO 4 , stir evenly, filter with a filter bag filter and decolorize with an activated carbon filter to obtain a multi-nuclear composite carbon source.

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Abstract

The invention discloses a multi-core composite carbon source for strengthening nitrogen removal during sewage treatment. A preparation method of the multi-core composite carbon source includes: addingstarch into hot water of 70-100 DEG C, and stirring to enable starch liquid to be fully gelatinized; adding a starch hydrolysis catalyst and acetic acid while stirring, hydrolyzing at 80-100 DEG C for 1-2h, and adding alkali until pH value of a solution is 5.5-7.0; adding microbial prebiotic factor, vitamin and mineral, stirring well, filtering, and decoloring to obtain the multi-core composite carbon source. The multi-core composite carbon source is rich in various carbon sources needed by different microbial flora for metabolism, and weakening of flora diversifying in environment with a single carbon source is avoided; the multi-core composite carbon source is rich in microbial prebiotic factors like various trace elements, organic acid and natural biological hormone, so that microbialactivity of a biochemical system is improved while carbon source supplement is realized, flora diversity is enhanced, and a carbon source which is more efficient is provided for denitrification.

Description

technical field [0001] The invention belongs to the technical field of adding carbon sources to the denitrification process of the biochemical section of a sewage treatment plant, and specifically relates to a multi-core composite carbon source used for strengthening denitrification in the biochemical section of a sewage treatment plant. Background technique [0002] With the development of my country's social economy, the increase of population and the increase of enterprise scale, the amount of sewage discharge is increasing. Therefore, it is very necessary to develop technologies and agents for efficient sewage treatment. The biochemical nitrogen removal process based on the activated sludge method is currently the mainstream technology of sewage treatment plants in China and even in the world. Its principle is to use denitrifying bacteria in sewage to reduce nitrate under anoxic conditions and release molecular nitrogen (N 2 ) or nitrous oxide (N 2 O) method to remove t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/28
CPCC02F3/28C02F3/34C02F2305/06
Inventor 周继柱石伟杰金鑫韩雪闫敬哲杨铁军孙松厚
Owner 神美科技有限公司
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