CN116119894A - Denitrifying biological carbon source with sludge reduction effect and preparation method thereof - Google Patents
Denitrifying biological carbon source with sludge reduction effect and preparation method thereof Download PDFInfo
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- CN116119894A CN116119894A CN202310232637.2A CN202310232637A CN116119894A CN 116119894 A CN116119894 A CN 116119894A CN 202310232637 A CN202310232637 A CN 202310232637A CN 116119894 A CN116119894 A CN 116119894A
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- parts
- acid
- carbon source
- water
- sludge reduction
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 42
- 239000010802 sludge Substances 0.000 title claims abstract description 39
- 230000009467 reduction Effects 0.000 title claims abstract description 30
- 230000000694 effects Effects 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 32
- YBJHBAHKTGYVGT-ZKWXMUAHSA-N (+)-Biotin Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)O)SC[C@@H]21 YBJHBAHKTGYVGT-ZKWXMUAHSA-N 0.000 claims abstract description 30
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- 239000011616 biotin Substances 0.000 claims abstract description 15
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- 239000002253 acid Substances 0.000 claims abstract description 7
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- 235000001968 nicotinic acid Nutrition 0.000 claims description 2
- 239000011664 nicotinic acid Substances 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 2
- 235000019260 propionic acid Nutrition 0.000 claims description 2
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 2
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- 235000019192 riboflavin Nutrition 0.000 claims description 2
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- 239000011734 sodium Substances 0.000 claims description 2
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 claims description 2
- 239000001433 sodium tartrate Substances 0.000 claims description 2
- 229960002167 sodium tartrate Drugs 0.000 claims description 2
- 235000011004 sodium tartrates Nutrition 0.000 claims description 2
- 229960002920 sorbitol Drugs 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- 235000019156 vitamin B Nutrition 0.000 claims description 2
- 239000011720 vitamin B Substances 0.000 claims description 2
- 235000019154 vitamin C Nutrition 0.000 claims description 2
- 239000011718 vitamin C Substances 0.000 claims description 2
- 239000000811 xylitol Substances 0.000 claims description 2
- 229960002675 xylitol Drugs 0.000 claims description 2
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims description 2
- 235000010447 xylitol Nutrition 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 241000894006 Bacteria Species 0.000 abstract description 15
- 238000003860 storage Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
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- 150000005846 sugar alcohols Polymers 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 239000000047 product Substances 0.000 description 10
- 239000010865 sewage Substances 0.000 description 9
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 8
- 239000008103 glucose Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000588724 Escherichia coli Species 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 241000191967 Staphylococcus aureus Species 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
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- 238000007711 solidification Methods 0.000 description 3
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- 230000001546 nitrifying effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 1
- 208000036649 Dysbacteriosis Diseases 0.000 description 1
- 208000027244 Dysbiosis Diseases 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
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- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 125000000422 delta-lactone group Chemical group 0.000 description 1
- 230000007140 dysbiosis Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229940011399 escin Drugs 0.000 description 1
- 229930186222 escin Natural products 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 235000001727 glucose Nutrition 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
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- 230000003204 osmotic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a denitrification biological carbon source with a sludge reduction effect and a preparation method thereof, wherein the preparation method comprises the following steps: dissolving 5-10 parts of organic acid or organic acid salt in 20 parts of water; adding 100-200 parts of polyalcohol, 10-100 parts of saccharides, 1-3 parts of microorganism protectant, 1-3 parts of trace elements and 1-3 parts of biotin; adding 50-80 parts of water; adding acid and alkali to regulate pH to 6-8. The method has simple production process, and the product can inhibit the growth of harmful miscellaneous bacteria and improve the utilization efficiency of carbon sources while meeting the carbon source demand in the denitrification process of the anoxic tank; optimizing the sludge population structure, reducing the sludge yield, and enabling the external drainage to meet the national COD standard by rapid degradation; the product is safe and nontoxic, and little water body residue can not cause environmental pollution; compared with the common carbon source in the market, the method has the advantages of cost, no combustibility, no corrosiveness, and simple storage and transportation.
Description
Technical Field
The invention relates to the field of water treatment reagents, in particular to a denitrification biological carbon source with a sludge reduction effect and a preparation method thereof.
Background
In municipal and chemical wastewater treatment processes, the phenomenon that total nitrogen in effluent exceeds standard often occurs, and the influent water of a common wastewater treatment plant contains a large amount of harmful microorganisms. In order to reduce various pollutants in the external drainage, sewage plants commonly use an activated sludge process to treat sewage and reduce total nitrogen, total phosphorus and COD in the sewage, thus A 2 The processes of/O, oxidation ditch, biological filter and the like are widely used by sewage treatment plants. In these processes, anaerobic tanks are used for organic hydrolytic acidification and methanogenesis, anoxic tanks are used for biological denitrification and phosphorus release, and aerobic tanks are used for phosphorus removal and further COD reduction. Due to advanced sewageAfter entering the anaerobic tank, the sewage enters the anoxic tank, so that COD in the sewage can be absorbed by anaerobic bacteria to generate substances such as methane, ethanol, acetic acid and the like, the COD entering the anoxic tank is reduced, the biological denitrification of denitrifying bacteria in the anoxic tank is not facilitated, and therefore, a plurality of carbon sources are often needed to be supplemented in the implementation process.
The carbon sources used in the current sewage plant in daily life include methanol, ethanol, sodium acetate, glycerol, glucose, starch, composite carbon sources and the like. Methanol is severely limited in the water treatment field due to its flammability, volatility and toxicity to mammals; even low concentration methanol still volatilizes and can penetrate the epidermis barrier of human body, causing poisoning risk. Sodium acetate can emit peculiar smell, is easy to harden after long-time storage, causes dissolution difficulty, can only be utilized by partial microorganisms, and can cause dysbacteriosis after long-term use. The water solution is easy to generate crystallization and solidification phenomena under the low temperature condition, and is unfavorable for winter use. The glycerol is a byproduct of other chemical products, the quality difference among batches is large, and meanwhile, the glycerol is sticky, and the dosage is not easy to control during the addition. Glucose can be utilized by most microorganisms and is safe to the ecological environment, but has larger molecular weight and slower penetration of the cell membrane of the microorganisms, so that the glucose is often not thoroughly absorbed, and the COD of the effluent exceeds the standard. Meanwhile, the selectivity of glucose is poor, and the addition of glucose in the water treatment process can promote the propagation of miscellaneous bacteria (such as escherichia coli, staphylococcus aureus, mould and the like) and is unfavorable for the denitrification process. Starch, while available to a variety of microorganisms, is not suitable as a direct carbon source. Because the starch is decomposed and utilized at too low a rate, it is not guaranteed that COD meets the drainage standard when draining. The composite carbon source is a novel carbon source, and has the advantages of stable COD concentration, low solidifying point, easy storage and accurate quantification, and gradually obtains the acceptance of various sewage plants. However, due to the complexity of the components of the composite carbon source, the product formulas of different manufacturers are greatly different, and the products are good and bad. Some products are mixed with impurities such as salt, acid and the like, and even methanol is used as a main raw material, so that the reliability and the safety of the products cannot be ensured. In addition, a single carbon source (except glucose) cannot meet the diversity requirements of different microorganisms in the activated sludge, and the ecological balance of the microorganisms can be destroyed after long-term use, so that the system impact resistance is not maintained. While glucose can meet the growth requirements of most microorganisms, the selectivity is poor, and the population quantity of nitrifying bacteria and denitrifying bacteria is not maintained.
Disclosure of Invention
Aiming at the defects in the prior art, the invention takes microbiological nutrition as the basis, and can inhibit harmful miscellaneous bacteria such as escherichia coli, staphylococcus aureus, mould and the like to a certain extent on the premise of ensuring sufficient supply of denitrifying bacteria carbon sources in activated sludge by widely screening microorganism available carbon sources. The sludge discharge can be reduced while meeting various requirements of effluent from a sewage treatment plant; on the basis of not changing the existing equipment and production conditions, the running cost is further reduced.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
in a first aspect, a method for preparing a denitrification biological carbon source with a sludge reduction effect is provided, the method comprising the following steps:
step 1, dissolving 5-10 parts of organic acid or organic acid salt in 20 parts of water; the organic acid or organic acid salt includes: any one or more of gluconic acid, gluconate, tartaric acid, tartrate, lactic acid, lactate, acetic acid, acetate, propionic acid, propionate, malonic acid, malonate, butyric acid, butyrate, citric acid, citrate, glycolic acid, glycolate;
step 2, adding 100-200 parts of polyol after the mixed solution is cooled; the polyol includes: any one or more of ethanol, ethylene glycol, propanol, propylene glycol, glycerol, n-butanol, isobutanol, butanediol, butanetriol, mannitol, xylitol, sorbitol, inositol;
step 3, adding 10-100 parts of saccharides; the saccharides include: one or more of amygdalin, arabinose, lactose, melezitose, mannose, salicin, sorbose, rhamnose and melibiose;
step 4, adding 1-3 parts of microorganism protective agent; the microbial protectant includes: any one or more of betaine, polyvinyl alcohol, polyvinylpyrrolidone, ectoin, acacia, and tween 80;
step 5, adding 1-3 parts of trace elements and 1-3 parts of biotin; the microelements comprise: one or more of salts of iron, manganese, zinc, copper, magnesium, molybdenum, boron; biotin includes: one or more of nucleotide, riboflavin, vitamin C, microbion B6, pantothenic acid, nicotinic acid, folic acid, and amino acid;
step 6, adding 50-80 parts of water into the mixed solution;
and 7, uniformly mixing the mixed solution, and adding acid and alkali to adjust the pH value to 6-8 to obtain the denitrification biological carbon source with the sludge reduction effect.
In step 1, the temperature of the organic acid salt dissolution process system needs to be heated to 50 ℃, or the organic acid salt dissolution process system can be dissolved in hot water with the temperature of 50 ℃, and the organic acid salt dissolution process system can be added and stirred until the organic acid salt dissolution process system is completely dissolved.
In step 2, ethanol, n-butanol and isobutanol are diluted with water to a proper concentration and then formulated.
Further, in step 5, in order to ensure sufficient dissolution of trace elements and biotin, the trace elements and biotin may be dissolved in 20 parts of water separately, and a small amount of sodium ethylenediamine tetraacetate (EDTA-Na) may be added.
In a second aspect, a denitrification biological carbon source with sludge reduction effect prepared by the method is provided, which comprises the following raw materials in parts by weight:
10 parts of sodium acetate and sodium citrate, 180 parts of glycerol, mannitol and propylene glycol, 11 parts of salicin, sorbose and melezitose, 1.5 parts of betaine and polyvinylpyrrolidone, 2 parts of trace elements (mixture of ferrous sulfate, copper sulfate, zinc sulfate, magnesium sulfate and sodium molybdate) and biotin (nucleotide, vitamin B) 6 And pantothenic acid) 1 part, 60 parts of water.
In a third aspect, a denitrifying biochar source with sludge reduction effect prepared by the method is provided, which comprises the following raw materials in parts by weight:
5 parts of glucono delta lactone sodium tartrate, 150 parts of glycerol, glycol and mannitol, 20 parts of salicin and arabinose, 1.5 parts of betaine and tween 80, 1 part of trace elements (a mixture of ferrous sulfate, manganese sulfate, zinc sulfate, copper sulfate and sodium molybdate), 1 part of biotin (a mixture of nucleotide, vitamin B6 and pantothenic acid) and 80 parts of water.
In a fourth aspect, a denitrifying biochar source with sludge reduction effect prepared by the method is provided, which comprises the following raw materials in parts by weight:
8 parts of sodium acetate and sodium citrate, 160 parts of glycerol, ethylene glycol and sorbitol, 20 parts of mannose, sorbose and arabinose, 1.5 parts of ectoin and tween 80, 1 part of trace elements (a mixture of ferrous sulfate, manganese sulfate, copper sulfate, magnesium sulfate and sodium molybdate), 1 part of biotin (a mixture of nucleotide, vitamin B6 and pantothenic acid) and 80 parts of water.
The beneficial effects of the invention are as follows:
the method has simple production process, and the product can inhibit the growth of harmful miscellaneous bacteria and improve the utilization efficiency of carbon sources while meeting the carbon source demand in the denitrification process of the anoxic tank; optimizing the sludge population structure, reducing the sludge yield, and enabling the external drainage to meet the national COD standard by rapid degradation; the product is safe and nontoxic, and little water body residue can not cause environmental pollution; compared with the common carbon source in the market, the method has the advantages of cost, no combustibility, no corrosiveness, and simple storage and transportation; meanwhile, the low-temperature performance is relatively good, crystallization and solidification phenomena are not easy to occur, and the low-temperature water-based paint is suitable for being used under the low-temperature condition.
Drawings
FIG. 1 is a schematic diagram showing that denitrification biological carbon sources with sludge reduction effect provided in example 1 promote the growth and propagation of Pseudomonas microorganisms;
fig. 2 is a schematic diagram of a denitrifying biological carbon source decomposing escherichia coli cell with sludge reduction effect provided in example 2 of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
Example 1
The preparation method of the denitrification biological carbon source with the sludge reduction effect specifically comprises the following steps:
in the first step, a total of 10 parts of sodium acetate and sodium citrate were dissolved in 20 parts of hot water at 50℃with stirring until all dissolved.
And secondly, adding 180 parts of total glycerol, mannitol and propylene glycol after the mixed solution is cooled, and uniformly mixing after adding.
And thirdly, adding 11 parts of total salicin, sorbose and melezitose, and uniformly mixing after adding.
Fourth, adding 1.5 parts of betaine and polyvinylpyrrolidone, and mixing uniformly.
In a fifth step, a total of 2 parts of a mixture of ferrous sulfate, cupric sulfate, zinc sulfate, magnesium sulfate and sodium molybdate, a total of 1 part of a mixture of nucleotides, vitamin B6 and pantothenic acid is added.
And sixthly, adding 80 parts of water into the mixed solution.
And seventh, uniformly mixing the mixed solution, adding acid and alkali to adjust the pH value to 6-8, and preparing the denitrification biological carbon source with the sludge reduction effect.
Example 2
The preparation method of the denitrification biological carbon source with the sludge reduction effect specifically comprises the following steps:
in the first step, 5 parts of sodium gluconate delta lactone tartrate was dissolved in 20 parts of hot water at 50 ℃ and stirred while adding until completely dissolved.
And secondly, adding 150 parts of total glycerol, glycol and mannitol after the mixed solution is cooled, and uniformly mixing after adding.
And thirdly, adding 20 parts of total salicin and arabinose, and uniformly mixing after adding.
Fourth, adding 1.5 parts of total betaine and Tween 80, and mixing uniformly after adding.
In a fifth step, a total of 1 part of a mixture of ferrous sulfate, manganese sulfate, copper sulfate, magnesium sulfate and sodium molybdate, a total of 1 part of a mixture of nucleotides, vitamin B6 and pantothenic acid is added.
And sixthly, adding 80 parts of water into the mixed solution.
And seventh, uniformly mixing the mixed solution, adding acid and alkali to adjust the pH value to 6-8, and preparing the denitrification biological carbon source with the sludge reduction effect.
Example 3
The preparation method of the denitrification biological carbon source with the sludge reduction effect specifically comprises the following steps:
in the first step, 8 parts of sodium acetate and sodium citrate were dissolved in 20 parts of hot water at 50℃and stirred while being added until all was dissolved.
And secondly, adding 160 parts of total glycerol, glycol and sorbitol after the mixed solution is cooled, and uniformly mixing after adding.
In the third step, a total of 20 parts of mannose, sorbose and arabinose were added and mixed uniformly after the addition.
Fourth, add 1.5 parts of the total of the escin and tween 80, and mix well after the addition.
In a fifth step, a total of 1 part of a mixture of ferrous sulfate, manganese sulfate, copper sulfate, magnesium sulfate and sodium molybdate, a total of 1 part of a mixture of nucleotides, vitamin B6 and pantothenic acid is added.
And sixthly, adding 80 parts of water into the mixed solution.
And seventh, uniformly mixing the mixed solution, adding acid and alkali to adjust the pH value to 6-8, and preparing the denitrification biological carbon source with the sludge reduction effect.
The denitrification capability of the denitrification biological carbon source with the sludge reduction effect prepared by the 3 examples is not greatly different, and the parameters such as raw material cost, product safety, low temperature resistance and the like are comprehensively considered, so that the example 1 is better.
Examples 1, 2 and 3, the E.coli reduction ratios were 43.2%, 46.7% and 48.2%, the Staphylococcus aureus reduction ratios were 32.2%, 33.6% and 30.6%, and the mold reduction ratios were 40.2%, 36.2% and 43.8%. The microbial population structure of the activated sludge is optimized, and the denitrification efficiency is improved by 40.3% compared with glucose and 30.8% compared with sodium acetate under the condition of denitrification treatment for 4 hours. The sludge yield of the 3 examples was reduced by 38.4%, 43.2% and 40.3% in this order. After 3 hours of denitrification treatment, the COD remained were 8.1mg/L, 10.7mg/L and 6.8mg/L in this order.
The raw materials used in the invention are nontoxic and safe, can be contacted and used for a long time, and simultaneously, in order to ensure that the purposes of promoting the growth and propagation of denitrifying bacteria and inhibiting the growth of harmful mixed bacteria are achieved, a large number of carbon source screening tests are carried out so as to ensure that the selected carbon source can be absorbed and utilized by anaerobic bacteria, nitrifying bacteria, phosphorus accumulating bacteria and denitrifying bacteria and can not be absorbed and utilized by the harmful mixed bacteria. In order to ensure the activity of microorganisms in the activated sludge, the invention also adds a microorganism protective agent to ensure that the microorganisms still keep the activity when osmotic pressure, temperature and pH impact occurs.
The method has simple production process, and the product can inhibit the growth of harmful miscellaneous bacteria (shown in figures 1-2) while meeting the carbon source demand in the denitrification process of the anoxic tank, thereby improving the utilization efficiency of the carbon source; optimizing the sludge population structure, reducing the sludge yield, and enabling the external drainage to meet the national COD standard by rapid degradation; the product is safe and nontoxic, and little water body residue can not cause environmental pollution; compared with the common carbon source in the market, the method has the advantages of cost, no combustibility, no corrosiveness, and simple storage and transportation; meanwhile, the low-temperature performance is relatively good, crystallization and solidification phenomena are not easy to occur, and the low-temperature water-based paint is suitable for being used under the low-temperature condition.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The preparation method of the denitrification biological carbon source with the sludge reduction effect is characterized by comprising the following steps of:
step 1, dissolving 5-10 parts of organic acid or organic acid salt in 20 parts of water; the organic acid or organic acid salt includes: any one or more of gluconic acid, gluconate, tartaric acid, tartrate, lactic acid, lactate, acetic acid, acetate, propionic acid, propionate, malonic acid, malonate, butyric acid, butyrate, citric acid, citrate, glycolic acid, glycolate;
step 2, adding 100-200 parts of polyol after the mixed solution is cooled; the polyol includes: any one or more of ethanol, ethylene glycol, propanol, propylene glycol, glycerol, n-butanol, isobutanol, butanediol, butanetriol, mannitol, xylitol, sorbitol, inositol;
step 3, adding 10-100 parts of saccharides; the saccharides include: one or more of amygdalin, arabinose, lactose, melezitose, mannose, salicin, sorbose, rhamnose and melibiose;
step 4, adding 1-3 parts of microorganism protective agent; the microbial protectant includes: any one or more of betaine, polyvinyl alcohol, polyvinylpyrrolidone, ectoin, acacia, and tween 80;
step 5, adding 1-3 parts of trace elements and 1-3 parts of biotin; the microelements comprise: one or more of salts of iron, manganese, zinc, copper, magnesium, molybdenum, boron; biotin includes: one or more of nucleotide, riboflavin, vitamin C, microbion B6, pantothenic acid, nicotinic acid, folic acid, and amino acid;
step 6, adding 50-80 parts of water into the mixed solution;
and 7, uniformly mixing the mixed solution, and adding acid and alkali to adjust the pH value to 6-8 to obtain the denitrification biological carbon source with the sludge reduction effect.
2. The method for preparing a denitrification biological carbon source with sludge reduction according to claim 1, wherein in step 1, the system temperature in the process of dissolving the organic acid salt needs to be heated to 50 ℃, and the organic acid salt can be dissolved in hot water at 50 ℃ and stirred while being added until the organic acid salt is completely dissolved.
3. The method for preparing a denitrification biological carbon source with sludge reduction effect according to claim 1, wherein in the step 2, ethanol, n-butanol and isobutanol are diluted with water to a proper concentration and then prepared.
4. The method for preparing a denitrification biological carbon source with sludge reduction effect according to claim 1, wherein in step 5, in order to ensure sufficient dissolution of trace elements and biotin, the trace elements and biotin are dissolved in 20 parts of water separately, and a small amount of sodium ethylenediamine tetraacetate (EDTA-Na) is added.
5. A denitrified biochar source with sludge reduction produced by the method of any one of claims 1 to 4, characterized by comprising the following raw materials in parts by weight:
10 parts of sodium acetate and sodium citrate, 180 parts of glycerol, mannitol and propylene glycol, 11 parts of salicin, sorbose and melezitose, 1.5 parts of betaine and polyvinylpyrrolidone, 2 parts of trace elements (mixture of ferrous sulfate, copper sulfate, zinc sulfate, magnesium sulfate and sodium molybdate) and biotin (nucleotide, vitamin B) 6 And pantothenic acid) 1 part, 60 parts of water.
6. A denitrified biochar source with sludge reduction produced by the method of any one of claims 1 to 4, characterized by comprising the following raw materials in parts by weight:
5 parts of glucono delta lactone sodium tartrate, 150 parts of glycerol, glycol and mannitol, 20 parts of salicin and arabinose, 1.5 parts of betaine and tween 80, 1 part of trace elements (a mixture of ferrous sulfate, manganese sulfate, zinc sulfate, copper sulfate and sodium molybdate), 1 part of biotin (a mixture of nucleotide, vitamin B6 and pantothenic acid) and 80 parts of water.
7. A denitrified biochar source with sludge reduction produced by the method of any one of claims 1 to 4, characterized by comprising the following raw materials in parts by weight:
8 parts of sodium acetate and sodium citrate, 160 parts of glycerol, ethylene glycol and sorbitol, 20 parts of mannose, sorbose and arabinose, 1.5 parts of ectoin and tween 80, 1 part of trace elements (a mixture of ferrous sulfate, manganese sulfate, copper sulfate, magnesium sulfate and sodium molybdate), 1 part of biotin (a mixture of nucleotide, vitamin B6 and pantothenic acid) and 80 parts of water.
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