CN112777753A - Composite carbon source medicament and preparation method and application thereof - Google Patents
Composite carbon source medicament and preparation method and application thereof Download PDFInfo
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- CN112777753A CN112777753A CN202011532753.9A CN202011532753A CN112777753A CN 112777753 A CN112777753 A CN 112777753A CN 202011532753 A CN202011532753 A CN 202011532753A CN 112777753 A CN112777753 A CN 112777753A
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- Prior art keywords
- carbon source
- percent
- aliphatic
- composite carbon
- sugar
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 93
- 239000003814 drug Substances 0.000 title claims abstract description 53
- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000126 substance Substances 0.000 claims abstract description 34
- 235000000346 sugar Nutrition 0.000 claims abstract description 30
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 24
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims abstract description 20
- 244000005700 microbiome Species 0.000 claims abstract description 14
- 229920002472 Starch Polymers 0.000 claims abstract description 10
- 239000008107 starch Substances 0.000 claims abstract description 10
- 235000019698 starch Nutrition 0.000 claims abstract description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 45
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 41
- 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 claims description 21
- 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 claims description 21
- 239000008103 glucose Substances 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- OWEGMIWEEQEYGQ-UHFFFAOYSA-N 100676-05-9 Natural products OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OC2C(OC(O)C(O)C2O)CO)O1 OWEGMIWEEQEYGQ-UHFFFAOYSA-N 0.000 claims description 16
- GUBGYTABKSRVRQ-PICCSMPSSA-N Maltose Natural products O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-PICCSMPSSA-N 0.000 claims description 16
- GUBGYTABKSRVRQ-QUYVBRFLSA-N beta-maltose Chemical compound OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O GUBGYTABKSRVRQ-QUYVBRFLSA-N 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 15
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 15
- 239000001632 sodium acetate Substances 0.000 claims description 15
- 235000017281 sodium acetate Nutrition 0.000 claims description 15
- DBTMGCOVALSLOR-UHFFFAOYSA-N 32-alpha-galactosyl-3-alpha-galactosyl-galactose Natural products OC1C(O)C(O)C(CO)OC1OC1C(O)C(OC2C(C(CO)OC(O)C2O)O)OC(CO)C1O DBTMGCOVALSLOR-UHFFFAOYSA-N 0.000 claims description 14
- RXVWSYJTUUKTEA-UHFFFAOYSA-N D-maltotriose Natural products OC1C(O)C(OC(C(O)CO)C(O)C(O)C=O)OC(CO)C1OC1C(O)C(O)C(O)C(CO)O1 RXVWSYJTUUKTEA-UHFFFAOYSA-N 0.000 claims description 14
- LUEWUZLMQUOBSB-UHFFFAOYSA-N UNPD55895 Natural products OC1C(O)C(O)C(CO)OC1OC1C(CO)OC(OC2C(OC(OC3C(OC(O)C(O)C3O)CO)C(O)C2O)CO)C(O)C1O LUEWUZLMQUOBSB-UHFFFAOYSA-N 0.000 claims description 14
- 125000001931 aliphatic group Chemical group 0.000 claims description 14
- -1 aliphatic polyol Chemical class 0.000 claims description 14
- UYQJCPNSAVWAFU-UHFFFAOYSA-N malto-tetraose Natural products OC1C(O)C(OC(C(O)CO)C(O)C(O)C=O)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(O)C(CO)O2)O)C(CO)O1 UYQJCPNSAVWAFU-UHFFFAOYSA-N 0.000 claims description 14
- LUEWUZLMQUOBSB-OUBHKODOSA-N maltotetraose Chemical compound O[C@H]1[C@H](O)[C@@H](O)[C@H](CO)O[C@H]1O[C@@H]1[C@H](CO)O[C@@H](O[C@@H]2[C@@H](O[C@@H](O[C@@H]3[C@@H](O[C@@H](O)[C@H](O)[C@H]3O)CO)[C@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O LUEWUZLMQUOBSB-OUBHKODOSA-N 0.000 claims description 14
- FYGDTMLNYKFZSV-UHFFFAOYSA-N mannotriose Natural products OC1C(O)C(O)C(CO)OC1OC1C(CO)OC(OC2C(OC(O)C(O)C2O)CO)C(O)C1O FYGDTMLNYKFZSV-UHFFFAOYSA-N 0.000 claims description 14
- 239000001509 sodium citrate Substances 0.000 claims description 14
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 14
- FYGDTMLNYKFZSV-BYLHFPJWSA-N β-1,4-galactotrioside Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@H](CO)O[C@@H](O[C@@H]2[C@@H](O[C@@H](O)[C@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O FYGDTMLNYKFZSV-BYLHFPJWSA-N 0.000 claims description 14
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 13
- 150000004676 glycans Chemical class 0.000 claims description 10
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 claims description 10
- 229920001282 polysaccharide Polymers 0.000 claims description 10
- 239000005017 polysaccharide Substances 0.000 claims description 10
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 10
- 150000002772 monosaccharides Chemical class 0.000 claims description 8
- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 claims description 7
- 229930091371 Fructose Natural products 0.000 claims description 7
- 239000005715 Fructose Substances 0.000 claims description 7
- 150000002016 disaccharides Chemical class 0.000 claims description 7
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims description 6
- 150000002191 fatty alcohols Chemical class 0.000 claims description 6
- JXKPEJDQGNYQSM-UHFFFAOYSA-M sodium propionate Chemical compound [Na+].CCC([O-])=O JXKPEJDQGNYQSM-UHFFFAOYSA-M 0.000 claims description 6
- 239000004324 sodium propionate Substances 0.000 claims description 6
- 229960003212 sodium propionate Drugs 0.000 claims description 6
- 235000010334 sodium propionate Nutrition 0.000 claims description 6
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 5
- 229930195725 Mannitol Natural products 0.000 claims description 5
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 5
- 229930006000 Sucrose Natural products 0.000 claims description 5
- 239000000594 mannitol Substances 0.000 claims description 5
- 235000010355 mannitol Nutrition 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 235000011083 sodium citrates Nutrition 0.000 claims description 5
- 239000005720 sucrose Substances 0.000 claims description 5
- 229920005862 polyol Polymers 0.000 claims description 4
- GTTSNKDQDACYLV-UHFFFAOYSA-N Trihydroxybutane Chemical compound CCCC(O)(O)O GTTSNKDQDACYLV-UHFFFAOYSA-N 0.000 claims description 3
- 239000003623 enhancer Substances 0.000 claims description 3
- 150000005846 sugar alcohols Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 230000004060 metabolic process Effects 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000002351 wastewater Substances 0.000 abstract description 4
- 231100000956 nontoxicity Toxicity 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 28
- 238000005303 weighing Methods 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000010865 sewage Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The invention provides a composite carbon source medicament and a preparation method and application thereof, and relates to the technical field of wastewater treatment. The composite carbon source medicament provided by the invention comprises 20-50% of sugar, 20-45% of aliphatic alcohol substances, 0.1-0.2% of biological promoter and 25-50% of water, wherein the components are mutually cooperated and matched, and the composite carbon source medicament serving as a carbon source applied to the field of wastewater treatment has the following advantages: 1. is beneficial to the growth and metabolism activities of microorganisms and has good adaptability to the water quality of the wastewater; 2. the effective COD is high, and the COD can reach 60-100 ten thousand mg/L; 3. the starch substance is used as a main raw material, and the preparation method has the characteristics of safety, no toxicity, greenness and environmental protection; 4. the denitrification rate is high, the utilization rate is high, and the denitrification effect is good.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a composite carbon source medicament and a preparation method and application thereof.
Background
The denitrification process needs to take an organic carbon source as an electron donor for reaction. However, most of the current sewage treatment plants in China have low C/N ratio and insufficient carbon source in an anoxic stage, so that the denitrification efficiency is low, and the total nitrogen of effluent is difficult to reach the standard. Aiming at solving the problem of insufficient carbon source and low biological denitrification efficiency, on one hand, the volume of the anoxic tank can be increased, so that the denitrification time is prolonged to improve the denitrification effect; on the other hand, a carbon source can be added into the anoxic zone, and denitrification is enhanced by supplementing the carbon source to improve denitrification efficiency.
With the increasing of environmental protection and the gradual improvement of sewage discharge standard, the total nitrogen index requirement is higher and higher, and the requirement generally meets the first grade A standard of urban sewage discharge, namely TN is less than 15mg/L, and the discharge standard in some areas with high environmental protection requirement is TN is less than 10 mg/L. The method provides higher requirements for denitrification treatment of sewage treatment, and the existing denitrification treatment often has the problem of insufficient carbon sources, and carbon sources such as sodium acetate, acetic acid, methanol, ethanol, glucose, sucrose, starch and the like must be added.
Acetic acid, methanol and ethanol belong to dangerous chemicals and are rarely adopted at present for safety reasons. The denitrification rate of the sodium acetate is high, the source is wide and the sodium acetate is widely used, and the main problems are that the COD equivalent is low, the adding amount is large, the operation cost of a sewage plant is increased, and the method is not economical.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a composite carbon source medicament which is low in cost and safe, and solves the technical problems of low COD equivalent of the existing carbon source, large adding amount and high cost in wastewater treatment.
The second purpose of the invention is to provide a preparation method of the compound carbon source medicament, which is simple and convenient.
The third purpose of the invention is to provide the application of the composite carbon source medicament in wastewater treatment.
In order to solve the technical problems, the following technical scheme is adopted:
in a first aspect, the invention provides a composite carbon source medicament, which comprises the following components in percentage by mass: 20 to 50 percent of sugar, 20 to 45 percent of aliphatic alcohol substances, 0.1 to 0.2 percent of biological promoter and 25 to 50 percent of water.
As a further technical scheme, the paint comprises the following components in percentage by mass: 30 to 40 percent of sugar, 30 to 40 percent of fatty alcohol substances, 0.1 to 0.2 percent of biological promoter and 30 to 40 percent of water.
As a further technical scheme, the paint comprises the following components in percentage by mass: 32 to 38 percent of sugar, 32 to 38 percent of fatty alcohol substances, 0.1 to 0.2 percent of biological promoter and 32 to 38 percent of water.
As a further technical solution, the sugar comprises a monosaccharide, a disaccharide or a polysaccharide.
As a further technical solution, the monosaccharide includes glucose and/or fructose;
preferably, the disaccharide comprises maltose and/or sucrose;
preferably, the polysaccharide comprises at least one of maltotriose, maltotetraose or starch polysaccharide.
As a further technical scheme, the aliphatic alcohol substance comprises at least one of aliphatic monohydric alcohol, aliphatic dihydric alcohol or aliphatic polyhydric alcohol;
preferably, the aliphatic monohydric alcohol comprises at least one of n-propanol, n-butanol or isobutanol;
preferably, the aliphatic diol comprises at least one of ethylene glycol, propylene glycol, or butylene glycol;
preferably, the aliphatic polyol comprises at least one of glycerol, butanetriol or mannitol.
As a further technical solution, the bio-promoter includes an organic acid salt;
preferably, the organic acid salt includes at least one of sodium citrate, sodium acetate, or sodium propionate.
In a second aspect, the present invention provides a method for preparing a composite carbon source medicament, comprising the following steps: mixing the sugar, the aliphatic alcohol substance, the biological promoter and water according to the formula ratio to prepare the composite carbon source medicament.
In a third aspect, the invention provides an application of a composite carbon source medicament in the field of wastewater treatment.
As a further technical scheme, the method comprises the steps of applying the composite carbon source medicament as a carbon source in an anoxic denitrification wastewater treatment process;
or the composite carbon source agent is used as a carbon source to be applied to an aerobic microorganism wastewater treatment process.
Compared with the prior art, the invention has the following beneficial effects:
the composite carbon source medicament provided by the invention comprises 20-50% of sugar, 20-45% of aliphatic alcohol substances, 0.1-0.2% of biological promoter and 25-50% of water, wherein the components are mutually cooperated and matched, and the composite carbon source medicament serving as a carbon source applied to the field of wastewater treatment has the following advantages: 1. is beneficial to the growth and metabolism activities of microorganisms and has good adaptability to the water quality of the wastewater; 2. the effective COD is high, and the COD can reach 60-100 ten thousand mg/L; 3. the starch substance is used as a main raw material, and the preparation method has the characteristics of safety, no toxicity, greenness and environmental protection; 4. the denitrification rate is high, the utilization rate is high, and the denitrification effect is good.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to embodiments and examples, but those skilled in the art will understand that the following embodiments and examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Those who do not specify the conditions are performed according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In a first aspect, the invention provides a composite carbon source medicament, which comprises the following components in percentage by mass: 20 to 50 percent of sugar, 20 to 45 percent of aliphatic alcohol substances, 0.1 to 0.2 percent of biological promoter and 25 to 50 percent of water.
The biological promoter is a medicament with the function of promoting the reproduction and metabolism of microorganisms.
In the present invention, the sugar is typically, but not limited to, 20%, 23%, 25%, 28%, 30%, 33%, 35%, 38%, 40%, 43%, 45%, 48% or 50%; aliphatic alcohols are typically, but not limited to, 20%, 23%, 25%, 28%, 30%, 33%, 35%, 38%, 40%, 43%, or 45%; bio-enhancers typically but not limited to 0.1%, 0.12%, 0.14%, 0.16%, 0.18% or 0.2%; water is typically, but not limited to, 25%, 28%, 30%, 33%, 35%, 38%, 40%, 43%, 45%, 48%, or 50%.
The composite carbon source medicament provided by the invention comprises 20-50% of sugar, 20-45% of aliphatic alcohol substances, 0.1-0.2% of biological promoter and 25-50% of water, wherein the components are mutually cooperated and matched, and the composite carbon source medicament serving as a carbon source applied to the field of wastewater treatment has the following advantages: 1. is beneficial to the growth and metabolism activities of microorganisms and has good adaptability to the water quality of the wastewater; 2. the effective COD is high, and the COD can reach 60-100 ten thousand mg/L; 3. the starch substance is used as a main raw material, and the preparation method has the characteristics of safety, no toxicity, greenness and environmental protection; 4. the denitrification rate is high, the utilization rate is high, and the denitrification effect is good.
In some preferred embodiments, the following components are included in mass percent: 30 to 40 percent of sugar, 30 to 40 percent of fatty alcohol substances, 0.1 to 0.2 percent of biological promoter and 30 to 40 percent of water.
In the invention, the content of each component in the composite carbon source medicament is further optimized and adjusted, so that the composite carbon source medicament can play a better effect when being used as a carbon source in the field of wastewater treatment.
In some preferred embodiments, the following components are included in mass percent: 32 to 38 percent of sugar, 32 to 38 percent of fatty alcohol substances, 0.1 to 0.2 percent of biological promoter and 32 to 38 percent of water.
In the invention, the content of each component in the composite carbon source medicament is further optimized and adjusted, so that the composite carbon source medicament can play a better effect when being used as a carbon source in the field of wastewater treatment.
In some preferred embodiments, the sugar includes, but is not limited to, a monosaccharide, a disaccharide, or a polysaccharide. In the wastewater treatment process, a compound carbon source agent containing sugar is added, so that a carbon source necessary for metabolism can be provided for microorganisms, and the sugar is used as the carbon source, so that the absorption of the microorganisms is facilitated, and the wastewater treatment is promoted.
In some preferred embodiments, the monosaccharides include, but are not limited to, glucose and/or fructose, or other monosaccharides that are well known to those skilled in the art.
It should be noted that the above "and/or" means that the monosaccharide may include glucose, may include fructose, and may also include glucose and fructose.
Preferably, the disaccharides include, but are not limited to maltose and/or sucrose, or other disaccharides known to those skilled in the art.
Preferably, the polysaccharide includes, but is not limited to, at least one of maltotriose, maltotetraose, or starch polysaccharides, or other polysaccharides known to those skilled in the art.
In some preferred embodiments, the aliphatic alcohol species includes, but is not limited to, at least one of an aliphatic monohydric alcohol, an aliphatic dihydric alcohol, or an aliphatic polyhydric alcohol, or other aliphatic alcohol species known to those skilled in the art.
In the invention, the aliphatic alcohol substance is added into the composite carbon source medicament, so that a carbon source can be provided for the microorganism, and the fermentation metabolism of the microorganism is promoted.
Preferably, the aliphatic monohydric alcohol includes, but is not limited to, at least one of n-propanol, n-butanol, or isobutanol, or other aliphatic monohydric alcohols known to those skilled in the art.
Preferably, the aliphatic diol includes, but is not limited to, at least one of ethylene glycol, propylene glycol, or butylene glycol, or other aliphatic diols well known to those skilled in the art.
Preferably, the aliphatic polyol includes, but is not limited to, at least one of glycerol, butanetriol, or mannitol, or other aliphatic polyols known to those skilled in the art.
In some preferred embodiments, the bio-enhancer includes, but is not limited to, organic acid salts, or other substances known to those skilled in the art that promote metabolism of microorganisms and enhance degradation of harmful substances in wastewater by microorganisms.
In the invention, the added biological promoter can be matched with other sugar or aliphatic substances to promote the denitrification rate of microorganisms in the anoxic denitrification wastewater treatment process.
Preferably, the organic acid salt includes, but is not limited to, at least one of sodium citrate, sodium acetate, or sodium propionate, or other organic acid salts known to those skilled in the art.
In a second aspect, the present invention provides a method for preparing a composite carbon source medicament, comprising the following steps: mixing the sugar, the aliphatic alcohol substance, the biological promoter and water according to the formula ratio to prepare the composite carbon source medicament.
The preparation method of the composite carbon source medicament is simple and convenient, the mixing sequence of the components is not particularly limited, and the components can be mixed in any sequence.
In a third aspect, the invention provides an application of a composite carbon source medicament in the field of wastewater treatment.
The composite carbon source medicament provided by the invention can be used as a carbon source to be applied to the field of wastewater treatment, and can relieve the technical problems of low COD equivalent of the existing carbon source, large adding amount and high cost in wastewater treatment.
In some preferred embodiments, the method comprises applying the composite carbon source agent as a carbon source in an anoxic denitrification wastewater treatment process;
or the composite carbon source agent is used as a carbon source to be applied to an aerobic microorganism wastewater treatment process.
The invention is further illustrated by the following specific examples and comparative examples, but it should be understood that these examples are for purposes of illustration only and are not to be construed as limiting the invention in any way.
Example 1
A compound carbon source medicament comprises 30% of sugar (glucose and fructose in a mass ratio of 3:2), 20% of glycerol, 0.1% of sodium acetate and the balance of water.
The preparation method comprises the following steps: weighing each component according to the formula ratio, slowly adding glycerol into water and stirring; slowly adding glucose and fructose, and stirring thoroughly; finally, adding sodium acetate, and fully stirring to obtain the composite carbon source medicament with the freezing temperature below-24 ℃ and the COD (chemical oxygen demand) greater than 65 ten thousand mg/L.
Example 2
A compound carbon source medicament comprises 40% of sugar (glucose, maltose, maltotriose and maltotetraose in a mass ratio of 2:5:2:1), 20% of aliphatic alcohol substances (ethylene glycol and glycerol in a mass ratio of 1:3), 0.2% of sodium citrate and the balance of water.
The preparation method comprises the following steps: weighing each component according to the formula ratio, slowly adding glycol and glycerol into water, and stirring; slowly adding glucose, maltose, maltotriose and maltotetraose, and fully stirring; and finally, adding sodium citrate, and fully stirring to obtain the composite carbon source medicament with the freezing temperature below-24 ℃ and the COD (chemical oxygen demand) greater than 75 ten thousand mg/L.
Example 3
A compound carbon source medicament comprises 30% of sugar (sucrose, glucose and maltose in a mass ratio of 3:1:2), 45% of aliphatic alcohol substances (ethylene glycol and glycerol in a mass ratio of 1:1), 0.1% of sodium citrate and the balance of water.
The preparation method comprises the following steps: weighing each component according to the formula ratio, slowly adding glycol and glycerol into water, and stirring; slowly adding glucose, maltose, maltotriose and maltotetraose, and fully stirring; and finally, adding sodium citrate, and fully stirring to obtain the composite carbon source medicament.
Example 4
A compound carbon source medicament comprises 20% of glucose, 45% of n-butanol, 0.1% of sodium propionate and the balance of water.
The preparation method comprises the following steps: weighing each component according to the formula ratio, slowly adding glucose into water and stirring; slowly adding n-butanol, and stirring thoroughly; and finally, adding sodium citrate, and fully stirring to obtain the composite carbon source medicament.
Example 5
A compound carbon source medicament comprises 50% of maltose, 20% of ethylene glycol, 0.2% of sodium acetate and the balance of water.
The preparation method comprises the following steps: weighing each component according to the formula ratio, slowly adding sodium acetate into water and stirring; then slowly adding ethylene glycol, and fully stirring; finally, adding maltose, and fully stirring to obtain the composite carbon source medicament.
Example 6
A compound carbon source medicament comprises 30% of sugar (maltotriose, maltotetraose and starch in a mass ratio of 1:1:1), 40% of aliphatic alcohol substances (n-butyl alcohol, ethylene glycol and glycerol in a mass ratio of 2:3:1), 0.1% of biological promoter (sodium citrate and sodium acetate in a mass ratio of 1:1) and the balance of water.
The preparation method comprises the following steps: weighing the components according to the formula ratio, mixing sugar, aliphatic alcohol substances and a biological promoter, slowly adding the mixture into water, and stirring to obtain the composite carbon source medicament.
Example 7
A compound carbon source medicament comprises 40% of sugar (glucose and starch in a mass ratio of 1:2), 30% of aliphatic alcohol substances (n-propanol and mannitol in a mass ratio of 2:5), 0.2% of biological promoter (sodium citrate, sodium acetate and sodium propionate in a mass ratio of 2:1:1) and the balance of water.
The preparation method comprises the following steps: weighing the components according to the formula ratio, slowly adding n-propanol and mannitol into water, and stirring; slowly adding glucose and starch, and stirring; and finally, adding sodium citrate, sodium acetate and sodium propionate, and fully stirring to obtain the composite carbon source medicament.
Example 8
A compound carbon source medicament comprises 32% of sugar (maltose, maltotriose and maltotetraose in a mass ratio of 1:1:1), 38% of aliphatic alcohol substances (isobutanol and propylene glycol in a mass ratio of 1:2), 0.1% of sodium acetate and the balance of water.
The preparation method comprises the following steps: weighing each component according to the formula ratio, slowly adding isobutanol and propylene glycol into water, and stirring; slowly adding maltose, maltotriose and maltotetraose, and fully stirring; and finally, adding sodium acetate, and fully stirring to obtain the composite carbon source medicament.
Comparative example 1
A carbon source drug was distinguished from example 2 in that ethylene glycol and glycerol were not added, and that ethylene glycol and glycerol were replaced with equal amounts of sugars (glucose, maltose, maltotriose, and maltotetraose in a mass ratio of 2:5:2: 1).
The preparation method comprises the following steps: weighing the components according to the formula ratio, slowly adding glucose, maltose, maltotriose and maltotetraose into water, and fully stirring; and adding sodium citrate, and fully stirring to obtain the composite carbon source medicament.
Comparative example 2
A carbon source drug which is different from example 2 in that glucose, maltose, maltotriose and maltotetraose are not added and glucose, maltose, maltotriose and maltotetraose are replaced with the same amount of aliphatic alcohols (ethylene glycol and glycerol in a mass ratio of 1: 3).
The preparation method comprises the following steps: weighing each component according to the formula ratio, slowly adding glycol and glycerol into water, and stirring; and adding sodium citrate, and fully stirring to obtain the composite carbon source medicament.
Comparative example 3
A carbon source agent, which is different from example 2 in that sodium citrate is not added.
The preparation method comprises the following steps: weighing each component according to the formula ratio, slowly adding glycol and glycerol into water, and stirring; then slowly adding glucose, maltose, maltotriose and maltotetraose, and fully stirring to obtain the composite carbon source medicament.
Experimental example 1
In the anoxic denitrification wastewater treatment process, the composite carbon source agents of the embodiment 1 and the embodiment 2 are directly added into an anoxic section under the condition of insufficient COD (chemical oxygen demand) of inlet water, and the denitrification effect is shown in the following table:
finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The composite carbon source medicament is characterized by comprising the following components in percentage by mass: 20 to 50 percent of sugar, 20 to 45 percent of aliphatic alcohol substances, 0.1 to 0.2 percent of biological promoter and 25 to 50 percent of water.
2. The composite carbon source agent according to claim 1, which comprises the following components in percentage by mass: 30 to 40 percent of sugar, 30 to 40 percent of fatty alcohol substances, 0.1 to 0.2 percent of biological promoter and 30 to 40 percent of water.
3. The composite carbon source agent according to claim 1, which comprises the following components in percentage by mass: 32 to 38 percent of sugar, 32 to 38 percent of fatty alcohol substances, 0.1 to 0.2 percent of biological promoter and 32 to 38 percent of water.
4. The complex carbon source agent of any one of claims 1-3, wherein the sugar comprises a monosaccharide, a disaccharide, or a polysaccharide.
5. The complex carbon source agent as claimed in claim 4, wherein the monosaccharide includes glucose and/or fructose;
preferably, the disaccharide comprises maltose and/or sucrose;
preferably, the polysaccharide comprises at least one of maltotriose, maltotetraose or starch polysaccharide.
6. The complex carbon source agent as claimed in any one of claims 1 to 3, wherein the aliphatic alcohol substance comprises at least one of aliphatic monohydric alcohol, aliphatic dihydric alcohol or aliphatic polyhydric alcohol;
preferably, the aliphatic monohydric alcohol comprises at least one of n-propanol, n-butanol or isobutanol;
preferably, the aliphatic diol comprises at least one of ethylene glycol, propylene glycol, or butylene glycol;
preferably, the aliphatic polyol comprises at least one of glycerol, butanetriol or mannitol.
7. The complex carbon source agent as claimed in any one of claims 1 to 3, wherein the bio-enhancer comprises an organic acid salt;
preferably, the organic acid salt includes at least one of sodium citrate, sodium acetate, or sodium propionate.
8. The method for preparing the carbon source complex agent as set forth in any one of claims 1 to 7, which comprises the steps of: mixing the sugar, the aliphatic alcohol substance, the biological promoter and water according to the formula ratio to prepare the composite carbon source medicament.
9. Use of the complex carbon source agent of any one of claims 1 to 7 or the complex carbon source agent prepared by the preparation method of claim 8 in the field of wastewater treatment.
10. The use of claim 9, comprising applying the complex carbon source agent as a carbon source in an anoxic denitrification wastewater treatment process;
or the composite carbon source agent is used as a carbon source to be applied to an aerobic microorganism wastewater treatment process.
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