CN111517463A - Preparation method of sewage biological denitrification composite carbon source - Google Patents
Preparation method of sewage biological denitrification composite carbon source Download PDFInfo
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- CN111517463A CN111517463A CN202010383195.8A CN202010383195A CN111517463A CN 111517463 A CN111517463 A CN 111517463A CN 202010383195 A CN202010383195 A CN 202010383195A CN 111517463 A CN111517463 A CN 111517463A
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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
Abstract
The invention discloses a preparation method of a sewage biological denitrification composite carbon source, which comprises the steps of adding waste corn primary pulp and potato starch into a stirring kettle, stirring to obtain a first mixed stock solution, adding water and potato starch into the first mixed stock solution, stirring to obtain a second mixed stock solution, adding a glucose solution into the second mixed stock solution, stirring to obtain a third mixed stock solution, adding sodium carbonate into the third mixed stock solution, stirring to obtain a composite sol, taking out the composite sol, putting the composite sol into a glass container, heating in a water bath, standing and cooling to obtain a composite gel, taking out the composite gel, putting the composite gel into a molded glass container, freezing, demolding, taking out, and freeze-drying to obtain a composite carbon source material. The preparation method of the sewage biological denitrification composite carbon source is simple in preparation, realizes the reutilization of waste materials, can be completely degraded, does not pollute the environment, and provides an economic long-acting carbon source for sewage denitrification.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a preparation method of a sewage biological denitrification composite carbon source.
Background
With the development of socioeconomic in China, the increase of population and the increase of enterprise scale, the problem of environmental pollution is obvious, wherein the sewage discharge is a big problem restricting economic development and human environment, so that the development of technology and medicament aiming at the efficient sewage treatment is very necessary. The biochemical nitrogen removal process based on an activated sludge process is a mainstream technology of domestic and even world sewage treatment plants at present, and the principle is that denitrifying bacteria in sewage are utilized to reduce nitrate under the anoxic condition, and a method of releasing molecular nitrogen (N2) or nitrous oxide (N2O) is utilized to remove total nitrogen. Most denitrifying bacteria are heterotrophic bacteria, and a carbon source is required to be used as energy required by cell life activities in the denitrifying process to perform anaerobic respiration, so that the total nitrogen in the sewage is removed.
The COD value and the BOD value of inflow water of domestic sewage plants are generally low, carbon sources are often required to be added in the denitrification process, the added carbon sources are indispensable in the biochemical treatment of sewage with low C/N (COD/total nitrogen), and the content of the carbon sources can restrict the efficiency and the effect of heterotrophic denitrification for removing the total nitrogen. The composite carbon source is mainly used for sewage treatment, and can be added into a mediation tank for sewage treatment to well increase the reaction speed and effect of parameters such as COD, BOD and the like.
Disclosure of Invention
The invention aims to provide a preparation method of a sewage biological denitrification composite carbon source, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a sewage biological denitrification composite carbon source comprises the following steps:
s1, selecting and matching raw materials, including glucose solution, waste corn primary pulp, potato starch and dry kernel powder;
s2, adding the waste corn primary pulp and the potato starch in the step S1 into a stirring kettle, and stirring to obtain a first mixed primary liquid;
s3, adding water and potato starch into the first mixed stock solution prepared in the S2, and stirring to obtain a second mixed stock solution;
s4, adding a glucose solution into the second mixed stock solution prepared in the S3, and stirring to obtain a third mixed stock solution;
s5, adding sodium carbonate into the third mixed stock solution prepared in the S4, and stirring to obtain composite sol;
s6, taking out the composite sol prepared in the S5, putting the composite sol into a glass container for water bath heating, standing and cooling to obtain composite gel;
s7, taking out the composite gel prepared in the S6, putting the composite gel into a mold glass container, freezing, demolding, taking out, and freeze-drying to obtain the composite carbon source material;
and S8, wrapping the composite carbon source material prepared in the S7 with degradable leatheroid, sealing by plastic package, and storing in a refrigerator for storage.
Preferably, the mass ratio of the waste corn primary pulp added in the S2 to the dry kernel powder is 10:2-10:4, and the mixing and stirring time is 15-20 min.
Preferably, the mass ratio of the water and the potato starch added in the S3 to the first mixed stock solution is 5:3:10-5:4:10, and the mixing and stirring time is 15-20 min.
Preferably, the mass ratio of the glucose solution added in the S4 to the second mixed stock solution is 3:10-5:10, and the mixing and stirring time is 10-15 min.
Preferably, the mass of the sodium carbonate added in the S5 is 2-5% of the mass of the glucose solution.
Preferably, the temperature of the composite sol water bath heating in the S6 is 85-95 ℃, and the heating time is 2-3 h.
Preferably, the composite gel in S7 is frozen in a model glass container at a temperature of-80 ℃ to-20 ℃ for 10-14 h.
The invention has the technical effects and advantages that: the preparation method of the sewage biological denitrification composite carbon source is simple in preparation, realizes reutilization of waste materials, can be completely degraded, does not pollute the environment, and provides an economic long-acting carbon source for sewage denitrification.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.
Example 1
A preparation method of a sewage biological denitrification composite carbon source comprises the following steps:
s1, selecting and matching raw materials, including glucose solution, waste corn primary pulp, potato starch and dry kernel powder;
s2, adding the waste corn primary pulp and the potato starch in the step S1 into a stirring kettle, and stirring to obtain a first mixed primary liquid;
s3, adding water and potato starch into the first mixed stock solution prepared in the S2, and stirring to obtain a second mixed stock solution;
s4, adding a glucose solution into the second mixed stock solution prepared in the S3, and stirring to obtain a third mixed stock solution, wherein in specific implementation, the glucose solution can be replaced by a glucomannan solution;
s5, adding sodium carbonate into the third mixed stock solution prepared in the S4, and stirring to obtain composite sol;
s6, taking out the composite sol prepared in the S5, putting the composite sol into a glass container for water bath heating, standing and cooling to obtain composite gel;
s7, taking out the composite gel prepared in the S6, putting the composite gel into a mold glass container, freezing, demolding, taking out, and freeze-drying to obtain the composite carbon source material;
and S8, wrapping the composite carbon source material prepared in the S7 with degradable leatheroid, sealing the composite carbon source material by plastic package, and storing the composite carbon source material in a refrigerator for storage, wherein the material selection of the degradable leatheroid is not limited during specific implementation.
Specifically, the mass ratio of the waste corn primary pulp added in the step S2 to the dry kernel powder is 10:2-10:4, the mixing and stirring time is 15-20min, in the specific implementation, the dry kernel powder can be walnut shells, litchi fruits and longan kernels, and the powder needs to be filtered by a screen mesh which is not less than 200 meshes.
Specifically, the mass ratio of the water and the potato starch added in the step S3 to the first mixed stock solution is 5:3:10-5:4:10, the mixing and stirring time is 15-20min, and the mass ratio and the stirring time are controlled within a range according to the requirements of users.
Specifically, the mass ratio of the glucose solution added in the step S4 to the second mixed stock solution is 3:10-5:10, the mixing and stirring time is 10-15min, and the mass ratio and the stirring time are controlled within the range according to the requirements of users.
Specifically, the mass of the sodium carbonate added in the S5 is 2-5% of the mass of the glucose solution.
Specifically, the temperature of the composite sol in the step S6 is 85-95 ℃, the heating time is 2-3h, and the heating temperature and the heating time are controlled within the range according to the requirements of users.
Specifically, the freezing temperature of the composite gel in the model glass container in S7 is-80 ℃ to-20 ℃, the freezing time is 10-14h, the freeze-drying time is 4h, and the freezing temperature, the freezing time and the drying time are controlled within the range according to the requirements of a user.
The preparation method of the sewage biological denitrification composite carbon source is simple in preparation, realizes reutilization of waste materials, can be completely degraded, does not pollute the environment, and provides an economic long-acting carbon source for sewage denitrification.
Example 2
A preparation method of a sewage biological denitrification composite carbon source comprises the following steps:
s1, selecting and matching raw materials, namely, glucose solution, waste corn primary pulp, potato starch and dry kernel powder, wherein the waste corn primary pulp and the dry kernel powder are utilized to realize the reutilization of waste agricultural products;
s2, adding the waste corn primary pulp and the potato starch in the step S1 into a stirring kettle, and stirring to obtain a first mixed primary liquid;
s3, adding water and potato starch into the first mixed stock solution prepared in the S2, and stirring to obtain a second mixed stock solution;
s4, adding a glucose solution into the second mixed stock solution prepared in the S3, and stirring to obtain a third mixed stock solution, wherein in specific implementation, the glucose solution can be replaced by a glucomannan solution;
s5, adding sodium carbonate into the third mixed stock solution prepared in the S4, and adding yeast extract, vitamins and MgSO4And K2SO4Stirring to obtain composite sol;
s6, taking out the composite sol prepared in the S5, putting the composite sol into a glass container for water bath heating, standing and cooling to obtain composite gel;
s7, taking out the composite gel prepared in the S6, putting the composite gel into a mold glass container, freezing, demolding, taking out, and freeze-drying to obtain the composite carbon source material;
and S8, wrapping the composite carbon source material prepared in the S7 with degradable leatheroid, sealing the composite carbon source material by plastic package, and storing the composite carbon source material in a refrigerator for storage, wherein the material selection of the degradable leatheroid is not limited during specific implementation.
Specifically, the mass ratio of the waste corn primary pulp added in the step S2 to the dry kernel powder is 10:2-10:4, the mixing and stirring time is 15-20min, in the specific implementation, the dry kernel powder can be walnut shells, litchi fruits and longan kernels, and the powder needs to be filtered by a screen mesh which is not less than 200 meshes.
Specifically, the mass ratio of the water and the potato starch added in the step S3 to the first mixed stock solution is 5:3:10-5:4:10, the mixing and stirring time is 15-20min, and the mass ratio and the stirring time are controlled within a range according to the requirements of users.
Specifically, the mass ratio of the glucose solution added in the step S4 to the second mixed stock solution is 3:10-5:10, the mixing and stirring time is 10-15min, and the mass ratio and the stirring time are controlled within the range according to the requirements of users.
In particularThe mass of the sodium carbonate added in the S5 is 2-5% of that of the glucose solution, and the sodium carbonate is yeast extract, vitamins and MgSO 44And K2SO4The content of (a) is 0.1% of the mass of the composite sol.
Specifically, the temperature of the composite sol in the step S6 is 85-95 ℃, the heating time is 2-3h, and the heating temperature and the heating time are controlled within the range according to the requirements of users.
Specifically, the freezing temperature of the composite gel in the model glass container in S7 is-80 ℃ to-20 ℃, the freezing time is 10-14h, the freeze-drying time is 4h, and the freezing temperature, the freezing time and the drying time are controlled within the range according to the requirements of a user.
The preparation method of the sewage biological denitrification composite carbon source is simple in preparation, realizes reutilization of waste materials, can be completely degraded, does not pollute the environment, and provides an economic long-acting carbon source for sewage denitrification.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. A preparation method of a sewage biological denitrification composite carbon source is characterized by comprising the following steps:
s1, selecting and matching raw materials, including glucose solution, waste corn primary pulp, potato starch and dry kernel powder;
s2, adding the waste corn primary pulp and the potato starch in the step S1 into a stirring kettle, and stirring to obtain a first mixed primary liquid;
s3, adding water and potato starch into the first mixed stock solution prepared in the S2, and stirring to obtain a second mixed stock solution;
s4, adding a glucose solution into the second mixed stock solution prepared in the S3, and stirring to obtain a third mixed stock solution;
s5, adding sodium carbonate into the third mixed stock solution prepared in the S4, and stirring to obtain composite sol;
s6, taking out the composite sol prepared in the S5, putting the composite sol into a glass container for water bath heating, standing and cooling to obtain composite gel;
s7, taking out the composite gel prepared in the S6, putting the composite gel into a mold glass container, freezing, demolding, taking out, and freeze-drying to obtain the composite carbon source material;
and S8, wrapping the composite carbon source material prepared in the S7 with degradable leatheroid, sealing by plastic package, and storing in a refrigerator for storage.
2. The method for preparing the composite carbon source for biological nitrogen removal of sewage according to claim 1, wherein the method comprises the following steps: the mass ratio of the waste corn primary pulp and the dry kernel powder added in the S2 is 10:2-10:4, and the mixing and stirring time is 15-20 min.
3. The method for preparing the composite carbon source for biological nitrogen removal of sewage according to claim 1, wherein the method comprises the following steps: the mass ratio of the water and the potato starch added in the S3 to the first mixed stock solution is 5:3:10-5:4:10, and the mixing and stirring time is 15-20 min.
4. The method for preparing the composite carbon source for biological nitrogen removal of sewage according to claim 1, wherein the method comprises the following steps: the mass ratio of the glucose solution added in the S4 to the second mixed stock solution is 3:10-5:10, and the mixing and stirring time is 10-15 min.
5. The method for preparing the composite carbon source for biological nitrogen removal of sewage according to claim 1, wherein the method comprises the following steps: the mass of the sodium carbonate added in the S5 is 2-5% of the mass of the glucose solution.
6. The method for preparing the composite carbon source for biological nitrogen removal of sewage according to claim 1, wherein the method comprises the following steps: and the temperature of the composite sol in the S6 for water bath heating is 85-95 ℃, and the heating time is 2-3 h.
7. The method for preparing the composite carbon source for biological nitrogen removal of sewage according to claim 1, wherein the method comprises the following steps: the composite gel in the S7 is frozen in a model glass container at the temperature of-80 ℃ to-20 ℃ for 10-14 h.
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Cited By (3)
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| CN113603215A (en) * | 2021-07-21 | 2021-11-05 | 清华大学 | Biomass carbon source and preparation method and application thereof |
| CN114084949A (en) * | 2021-11-19 | 2022-02-25 | 毅康科技有限公司 | Efficient biomass composite carbon source grading preparation device and method |
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Application publication date: 20200811 |