CN111039401A - Denitrifying biological carbon source and preparation method thereof - Google Patents
Denitrifying biological carbon source and preparation method thereof Download PDFInfo
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- CN111039401A CN111039401A CN201911218965.7A CN201911218965A CN111039401A CN 111039401 A CN111039401 A CN 111039401A CN 201911218965 A CN201911218965 A CN 201911218965A CN 111039401 A CN111039401 A CN 111039401A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention relates to a denitrification biological carbon source which comprises the following components in parts by weight: 50-300 parts of organic acid or inorganic acid; 500-800 parts of polyol; 5-200 parts of syrup; 1 part of trace elements; 1 part of biotin and water, wherein the product meets the carbon source requirement in the denitrification process of the anoxic tank and can be quickly degraded to ensure that the discharged water meets the national COD standard; the product is safe and nontoxic, and does not cause environmental pollution.
Description
Technical Field
The invention relates to a biological carbon source, in particular to a denitrification biological carbon source and a preparation method thereof.
Background
In the water treatment process, the phenomenon that the total nitrogen exceeds the standard often occurs, and the water is discharged into the water body to cause the eutrophication of the water body. In order to reduce the total nitrogen of the discharged water, the sewage plant generally uses an activated sludge method for biological nitrogen removal, phosphorus removal and COD reduction at present, so the A2/O process is widely used by the sewage plant. In this process, the anaerobic tank is used for biological phosphorus removal and the anoxic tank is used for biological nitrogen removal. Because the sewage enters the anoxic tank after entering the anaerobic tank, the COD of the anoxic tank is often very low, which is not beneficial to the biological denitrification, and therefore, some carbon sources are often needed to be supplemented in the implementation process. The single carbon source cannot meet the diversity requirement of various microorganisms, and the long-term use of the carbon source can destroy the ecological balance of the microorganisms, so that the impact resistance of the system is not maintained.
Disclosure of Invention
The invention provides a denitrification biological carbon source for solving the problem of incomplete denitrification caused by insufficient carbon source in an anoxic tank in the sewage treatment process, which can meet various requirements of sewage treatment plants on drainage and has low cost.
The technical scheme adopted by the invention is as follows: a denitrification biological carbon source, which comprises the following components in parts by weight
50-300 parts of organic acid or inorganic acid;
500-800 parts of polyol;
5-200 parts of syrup;
1 part of trace elements;
1 part of biotin;
and (5) water in parts.
Further, the organic acid or organic acid salt comprises any one or more of gluconic acid, gluconate, lactic acid, lactate, acetic acid, acetate, malonic acid, malonate, citric acid, citrate, glycolic acid and glycolate.
Further, the polyhydric alcohol is any one or more of ethylene glycol, propylene glycol, glycerol, butanediol, butanetriol, mannitol, xylitol and sorbitol.
Further, the syrup is any one or more of glucose syrup, xylose, fructose, trehalose, maltose syrup, cane syrup, industrial syrup, starch syrup, mannose, arabinose, galactose and lactose.
Further, the trace elements are one or more of salts of iron, manganese, zinc, magnesium and molybdenum.
Further, the biotin is one or more of nucleotide, riboflavin, microorganism B6, pantothenic acid, nicotinic acid, folic acid and amino acid.
Further, the water accounts for 250-300 parts.
The invention also provides a preparation method of the denitrification biological carbon source, which comprises the following steps
Dissolving 50-300 parts of organic acid or organic acid salt in 200 parts of water;
adding 500-800 parts of polyol into the mixed solution and uniformly mixing;
adding 5-200 parts of syrup into the mixed solution and uniformly mixing;
adding 1 part of trace elements and 1 part of biotin into the mixed solution and uniformly mixing;
adding 50-80 parts of water into the mixed solution;
uniformly mixing the solution, and adding acid and alkali to adjust the pH value to 6-8;
and (4) preparing.
Further, the organic acid salt is dissolved in water at 50 ℃.
Further, the trace elements and biotin are dissolved in 20 parts of water, and added into the mixed solution after being added with sodium ethylene diamine tetracetate.
The beneficial effects produced by the invention comprise: the raw materials used in the method are safe and nontoxic, the method is simple and convenient in production process, and the product meets the carbon source requirement in the denitrification process of the anoxic tank and can be quickly degraded to ensure that the discharged water meets the national COD standard; the product is safe and nontoxic, and cannot cause environmental pollution; compared with common glycerol and glucose carbon sources in the market, the carbon source has the advantages of cost advantage, no flammability and no corrosion, and is simple and convenient to store and transport; meanwhile, the low-temperature performance is good, the crystallization and solidification phenomena are not easy to occur, the product is suitable for being used under the low-temperature condition, and the performance index of the prepared product is as follows: specific gravity: 1.0-1.25, pH: 5-9, viscosity: 40-80, solubility: 100%, freezing point: -10 to-40 ℃, COD: 1000000-1200000.
Drawings
FIG. 1 is a schematic diagram showing the results of detecting a biological carbon source in the present invention.
Detailed Description
The present invention is explained in further detail below with reference to the drawings and the specific embodiments, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Example one
In the first step, 40 parts sodium acetate, 25 parts sodium citrate are dissolved in 200 parts water. The temperature of the system needs to be heated to 50 ℃ in the dissolving process of the sodium acetate and the sodium citrate, and the sodium acetate and the sodium citrate can also be dissolved in hot water of 50 ℃ while being added and stirred until being completely dissolved to obtain a first mixed solution.
And secondly, after the first mixed solution is cooled, adding 500 parts of glycerol, 100 parts of mannitol and 100 parts of xylitol into the mixed solution, and uniformly mixing to obtain a second mixed solution.
And step three, adding 20 parts of industrial syrup and 20 parts of malt syrup into the second mixed solution, and uniformly mixing to obtain a third mixed solution.
And fourthly, adding 1 part of trace elements and 1 part of biotin into the third mixed solution. The microelements are mixture of ferrous sulfate, manganese sulfate, zinc sulfate, magnesium sulfate and sodium molybdate. The biotin is nucleotide and vitamin B6And pantothenic acid. In order to ensure the dissolution of the trace elements and biotin, the trace elements and biotin can be dissolved in 20 parts of water, and a small amount of sodium ethylene diamine tetracetate (EDTA-Na) can be added.
And fifthly, adding 80 parts of water into the mixed solution.
And sixthly, uniformly mixing, and adding acid and alkali to adjust the pH value to 6-8.
Detecting the mixed solution, and subpackaging qualified products.
Example two
In the first step, 100 parts of glucono delta lactone and 50 parts of sodium tartrate are dissolved in 200 parts of water. The temperature of the system needs to be heated to 50 ℃ in the dissolving process of the sodium tartrate, and the sodium tartrate can also be dissolved in hot water of 50 ℃ while being added and stirred until the sodium tartrate is completely dissolved to obtain a first mixed solution.
And step two, after the first mixed solution is cooled, adding 500 parts of glycerol, 100 parts of mannitol and 1 part of tween into the mixed solution, and uniformly mixing to obtain a second mixed solution.
And step three, adding 20 parts of industrial syrup and 20 parts of malt syrup into the second mixed solution, and uniformly mixing to obtain a third mixed solution.
And fourthly, adding 1 part of trace elements and 1 part of biotin into the third mixed solution. The microelements are mixture of ferrous sulfate, manganese sulfate, zinc sulfate, magnesium sulfate and sodium molybdate. A mixture of nucleotides, vitamin B6 and pantothenic acid. In order to ensure the dissolution of the trace elements and biotin, the trace elements and biotin can be dissolved in 20 parts of water, and a small amount of sodium ethylene diamine tetracetate (EDTA-Na) can be added.
And fifthly, adding 80 parts of water into the mixed solution.
And sixthly, uniformly mixing, and adding acid and alkali to adjust the pH value to 6-8.
Detecting the mixed solution, and subpackaging qualified products.
Example three
In the first step, 120 parts of sodium acetate, 30 parts of sodium citrate and 20 parts of wood vinegar are dissolved in 200 parts of water. The temperature of the system needs to be heated to 50 ℃ in the dissolving process of the sodium acetate and the sodium citrate, and the sodium acetate and the sodium citrate can also be dissolved in hot water of 50 ℃ while being added and stirred until being completely dissolved to obtain a first mixed solution.
And secondly, after the first mixed solution is cooled, adding 500 parts of glycerol, 100 parts of mannitol and 10 parts of xylitol into the mixed solution, and uniformly mixing to obtain a second mixed solution.
And step three, adding 200 parts of industrial syrup and 200 parts of malt syrup into the second mixed solution, and uniformly mixing to obtain a third mixed solution.
And fourthly, adding 1 part of trace elements and 1 part of biotin into the third mixed solution. The microelements are mixture of ferrous sulfate, manganese sulfate, zinc sulfate, magnesium sulfate and sodium molybdate. A mixture of nucleotides, vitamin B6 and pantothenic acid. In order to ensure the dissolution of the trace elements and biotin, the trace elements and biotin can be dissolved in 20 parts of water, and a small amount of sodium ethylene diamine tetracetate (EDTA-Na) can be added.
And fifthly, adding 80 parts of water into the mixed solution.
And sixthly, uniformly mixing, and adding acid and alkali to adjust the pH value to 6-8.
Detecting the mixed solution, and subpackaging qualified products.
The raw materials used in the invention are safe and nontoxic, and meanwhile, a large amount of carbon source screening is carried out to promote the growth and the propagation of denitrifying bacteria so as to ensure that the selected carbon source is beneficial to the implementation of the denitrification process.
The denitrification process is a biological sludge method, wherein the strains playing a role in denitrification are various, and carbon sources need to be combined to meet the carbon source requirements of different microorganisms.
The denitrification process is an energy-consuming process, so that the quantity of energy supplied by the carbon source to the microorganisms is directly proportional to the denitrification capacity, the carbon source in the invention is easy to enter and convert into TCA process raw materials, the TCA process has the most capacity and no energy consumption, and polyols, organic acids and the like in the carbon source are microbial fermentation products, so that the energy-consuming process is not required before capacity, and the energy can be quickly supplied to the microorganisms. Meanwhile, the pH value of the wastewater can change in the denitrification process, and the design of the carbon source comprehensively considers how to regulate and control the whole pH value in the reaction process of the microorganisms.
Although traditional carbon source syrup substances such as glucose, sucrose, maltose and the like can provide energy for microorganisms and provide more energy, an energy consumption and low-yield process is provided before the capacity is generated, so that the direct use effect is not ideal, and effluent water is easy to exceed COD (chemical oxygen demand).
The carbon source prepared in the example 1 is detected, the carbon source, the existing glucose and the existing glycerol are simultaneously placed in the sewage environment with the same condition for detection, and the total nitrogen content in the sewage is observed for 0-6 h, as shown in fig. 1, it can be seen that the total nitrogen is obviously reduced in the sewage treatment and is superior to the common carbon sources such as the glycerol, the glucose and the like.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the content of the embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the technical scope of the present invention, and any changes and modifications made are within the protective scope of the present invention.
Claims (10)
1. A denitrifying biological carbon source, characterized by: comprises the following components in parts by weight
50-300 parts of organic acid or inorganic acid;
500-800 parts of polyol;
5-200 parts of syrup;
1 part of trace elements;
1 part of biotin;
and (5) water in parts.
2. The denitrifying biological carbon source of claim 1, wherein: the organic acid or organic acid salt comprises one or more of gluconic acid, gluconate, lactic acid, lactate, acetic acid, acetate, malonic acid, malonate, citric acid, citrate, glycolic acid and glycolate.
3. The denitrifying biological carbon source of claim 1, wherein: the polyalcohol is one or more of ethylene glycol, propylene glycol, glycerol, butanediol, butanetriol, mannitol, xylitol and sorbitol.
4. The denitrifying biological carbon source of claim 1, wherein: the syrup is any one or more of glucose syrup, xylose, fructose, trehalose, maltose syrup, cane syrup, industrial syrup, starch syrup, mannose, arabinose, galactose and lactose.
5. The denitrifying biological carbon source of claim 1, wherein: the trace elements are one or more of salts of iron, manganese, zinc, magnesium and molybdenum.
6. The denitrifying biological carbon source of claim 1, wherein: the biotin is one or more of nucleotide, riboflavin, microorganism B6, pantothenic acid, nicotinic acid, folic acid, and amino acid.
7. The denitrifying biological carbon source of claim 1, wherein: the water accounts for 250-300 parts.
8. A method for preparing a denitrification biological carbon source is characterized by comprising the following steps: comprises the following steps
Dissolving 50-300 parts of organic acid or organic acid salt in 200 parts of water;
adding 500-800 parts of polyol into the mixed solution and uniformly mixing;
adding 5-200 parts of syrup into the mixed solution and uniformly mixing;
adding 1 part of trace elements and 1 part of biotin into the mixed solution and uniformly mixing;
adding 50-80 parts of water into the mixed solution;
uniformly mixing the solution, and adding acid and alkali to adjust the pH value to 6-8;
and (4) preparing.
9. The method for producing a denitrifying biological carbon source as claimed in claim 8, wherein: the organic acid salt is dissolved in water at 50 ℃.
10. The method for producing a denitrifying biological carbon source as claimed in claim 8, wherein: dissolving microelements and biotin into 20 parts of water, adding sodium ethylene diamine tetracetate, and then adding into the mixed solution.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479382A (en) * | 2021-01-08 | 2021-03-12 | 湖南正泰水务有限公司 | Preparation process of compound plant carbon source ZTFN-1 |
| CN113184992A (en) * | 2021-05-07 | 2021-07-30 | 大连力佳化学制品有限公司 | Composite carbon source additive and preparation method thereof |
| CN114314856A (en) * | 2021-12-01 | 2022-04-12 | 蓝保(厦门)水处理科技有限公司 | Composite carbon source for sewage denitrification and application thereof |
| CN114702143A (en) * | 2022-04-20 | 2022-07-05 | 四川中润佳和能源有限公司 | Microbial composite carbon source and preparation method and application thereof |
| CN115072865A (en) * | 2022-06-28 | 2022-09-20 | 福建省恒创环保科技有限公司 | Biological denitrification composite carbon source for sewage treatment and application thereof |
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Patent Citations (3)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479382A (en) * | 2021-01-08 | 2021-03-12 | 湖南正泰水务有限公司 | Preparation process of compound plant carbon source ZTFN-1 |
| CN113184992A (en) * | 2021-05-07 | 2021-07-30 | 大连力佳化学制品有限公司 | Composite carbon source additive and preparation method thereof |
| CN114314856A (en) * | 2021-12-01 | 2022-04-12 | 蓝保(厦门)水处理科技有限公司 | Composite carbon source for sewage denitrification and application thereof |
| CN114702143A (en) * | 2022-04-20 | 2022-07-05 | 四川中润佳和能源有限公司 | Microbial composite carbon source and preparation method and application thereof |
| CN115072865A (en) * | 2022-06-28 | 2022-09-20 | 福建省恒创环保科技有限公司 | Biological denitrification composite carbon source for sewage treatment and application thereof |
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