CN111908590A - Preparation method and preparation equipment of carbon source for sewage denitrification process - Google Patents
Preparation method and preparation equipment of carbon source for sewage denitrification process Download PDFInfo
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- CN111908590A CN111908590A CN202010666753.1A CN202010666753A CN111908590A CN 111908590 A CN111908590 A CN 111908590A CN 202010666753 A CN202010666753 A CN 202010666753A CN 111908590 A CN111908590 A CN 111908590A
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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
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
- C13K1/00—Glucose; Glucose-containing syrups
- C13K1/06—Glucose; Glucose-containing syrups obtained by saccharification of starch or raw materials containing starch
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
- C13K1/00—Glucose; Glucose-containing syrups
- C13K1/06—Glucose; Glucose-containing syrups obtained by saccharification of starch or raw materials containing starch
- C13K1/08—Purifying
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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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Abstract
The invention discloses a preparation method and preparation equipment of a carbon source for a sewage denitrification process, relates to the technical field of sewage biochemical treatment, and aims to solve the problems that under the condition of an acid method process, hydrochloric acid or sulfuric acid is mainly used as a catalyst for starch hydrolysis reaction in the conventional glucose raw material for preparing the carbon source, the corrosivity is high, and the service life of the equipment is easily influenced. Step 1: preparing 45% glucose solution, crude glycerol and water, and respectively placing the glucose solution, the crude glycerol and the water into respective storage barrels, wherein the glucose solution is prepared by adopting an acid method, and the raw materials are high-purity corn starch, 71% oxalic acid solution and water; step 2: conveying the raw materials into a mixing kettle according to components through a metering pump and a pipeline on one side of a storage barrel; and step 3: the stirring mechanism in the mixing kettle is utilized to complete the initial dissolution and mixing work of the materials, and the stirring mechanism is driven by a motor.
Description
Technical Field
The invention relates to the technical field of sewage biochemical treatment, in particular to a preparation method and preparation equipment of a carbon source for a sewage denitrification process.
Background
The biochemical treatment of sewage belongs to secondary treatment, mainly aims at removing non-settleable suspended matters and soluble biodegradable organic matters, has various processes, and can be divided into a plurality of treatment methods such as a biomembrane method, an activated sludge method stabilization pond method, a land treatment method and the like. Along with the increasing prosperity and development of the industry, the sewage components are more and more complicated, the original physical method and chemical method can not meet the sewage treatment requirements, in recent years, the biochemical treatment method is applied to a plurality of sewage treatment fields, the biochemical treatment method is favored by low energy consumption, high efficiency, low cost and simple operation, and most of the existing sewage denitrification processes adopt carbon source organic matters (such as methanol, ethanol, acetic acid, sodium acetate, glycerol and the like) and sugar substances (glucose, sucrose, xylose and the like) as liquid carbon sources.
The existing glucose raw material for preparing the carbon source mainly adopts hydrochloric acid or sulfuric acid as a catalyst for starch hydrolysis reaction under the acid process condition, has high corrosivity and easily influences the service life of equipment; therefore, the existing requirements are not met, and a preparation method and preparation equipment of the carbon source for the sewage denitrification process are provided.
Disclosure of Invention
The invention aims to provide a preparation method and preparation equipment of a carbon source for a sewage denitrification process, which aim to solve the problems that the prior glucose raw material for preparing the carbon source, which is proposed in the background art, mainly adopts hydrochloric acid or sulfuric acid as a catalyst for starch hydrolysis reaction under the acid process condition, has high corrosivity and is easy to influence the service life of the equipment.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a carbon source for a sewage denitrification process comprises the following steps:
step 1: preparing 45% glucose solution, crude glycerol and water, and respectively placing the glucose solution, the crude glycerol and the water into respective storage barrels, wherein the glucose solution is prepared by adopting an acid method, and the raw materials are high-purity corn starch, 71% oxalic acid solution and water;
step 2: conveying the raw materials into a mixing kettle according to components through a metering pump and a pipeline on one side of a storage barrel;
and step 3: the primary dissolution and mixing work of the materials are completed by utilizing a stirring mechanism in the mixing kettle, and the stirring mechanism is driven by a motor;
and 4, step 4: taking out a small amount of solution from a sampling port of the mixing kettle, and measuring the purity of the mixed solution by using a professional instrument;
and 5: and after the purity of the mixed liquid reaches the standard, opening a discharge valve at the lower end of the mixing kettle, and finishing discharging to obtain the carbon source.
Preferably, the acid process of the glucose solution in the step 1 specifically includes:
step 1-1: firstly, pouring a proper amount of water into a size mixing tank, adding corn starch under the stirring state, continuously adding water with the temperature of 90 ℃ to ensure that the concentration of the starch reaches 22-24 Baume degrees, and then adding oxalic acid solution with the concentration of 71 percent as a catalyst to hydrolyze and saccharify the starch;
step 1-2: conveying the size mixing solution to a pressurizing saccharification tank, gradually pressurizing to enable the temperature in the tank to reach 150 ℃, in the process of pressurizing, opening an exhaust valve to discharge cold air when the temperature rises by 0.98X104PA, closing the exhaust valve again until white smoke appears, repeating the steps to reach the required temperature, measuring the DE value of sugar liquid in the tank in time, and stopping saccharification when the DE value reaches 40;
step 1-3: introducing the saccharification liquid into a cooling tank from a pressurized saccharification tank, and cooling until the temperature reaches 70-75 ℃;
step 1-4: introducing the cooled sugar solution into a neutralization reaction kettle, adding calcium carbonate as a reactant to generate calcium oxalate, continuously adding activated carbon powder with the mass of 0.25% and a proper amount of aqueous solution into the sugar solution, mixing and stirring, and adjusting the pH value to 4.5;
step 1-5: and pressing the sugar solution containing impurities into a filter press for filtering treatment to remove calcium oxalate and activated carbon powder to prepare a clear glucose solution.
Preferably, in the step 2, a metering pump is used to make the 45% glucose solution account for 20-25%, the crude glycerol account for 35-40%, and the balance water, so that the mass is 100% comprehensively.
The utility model provides a preparation equipment of carbon source for sewage denitrogenation technology, includes first storage vat, second storage vat, third storage vat and compounding cauldron, one side of first storage vat, second storage vat and third storage vat all is provided with the measuring pump, the upper end installation closing cap of compounding cauldron, the upper end of closing cap is provided with servo motor, one side of servo motor is provided with the feed inlet, and feed inlet and closing cap structure as an organic whole, one side of compounding cauldron is provided with the sample connection, the lower extreme of compounding cauldron is provided with the discharge gate, the below fixed mounting of compounding cauldron has the supporting leg, and the supporting leg is provided with threely.
Preferably, the first storage barrel, the second storage barrel and the third storage barrel are communicated with a feed inlet of the mixing kettle through a metering pump and a connecting pipeline.
Preferably, servo motor passes through motor support and compounding cauldron fixed connection, servo motor's output runs through and extends to the inside of compounding cauldron, and installs mechanical seal with the junction of compounding cauldron, the inside of compounding cauldron is provided with the (mixing) shaft, servo motor's output passes through shaft coupling and (mixing) shaft fixed connection, fixed mounting has the stirring leaf on the outer wall of (mixing) shaft.
Preferably, the two sides of the inner wall of the mixing kettle are both provided with baffle plates, and the baffle plates are fixedly connected with the inner wall of the mixing kettle.
Preferably, the feed inlet, the discharge outlet and the sampling port of the mixing kettle are all provided with valves.
Compared with the prior art, the invention has the beneficial effects that:
1. in the aspect of the process, a 45% concentration glucose solution, crude glycerol and water are used as raw materials for preparing a carbon source, wherein the glucose solution selects corn starch with high purity, an oxalic acid solution with 71% concentration and water are used as raw materials, the oxalic acid solution is used for replacing the original hydrochloric acid or sulfuric acid to be used as a catalyst for starch hydrolysis reaction, in comparison, the corrosivity is obviously reduced, the service life can be obviously prolonged even if continuous processing equipment for saccharification reaction is made of common stainless steel materials, special anti-corrosion treatment is not needed for a lining, and the oxalic acid is more convenient in storage and transportation before processing compared with the hydrochloric acid or the sulfuric acid, although the catalytic efficiency of the oxalic acid is not high in the hydrochloric acid or the sulfuric acid, the decomposition composite reaction is less, so that higher reaction temperature can be used for accelerating the reaction efficiency, and in the neutralization reaction process, sodium chloride can be respectively generated by the hydrochloric acid, the sulfuric acid and the oxalic acid, Calcium sulfate and calcium carbonate, hydrochloric acid reaction sodium chloride is difficult to separate out, although it is not to influence the taste of glucose greatly, but will influence its purity, thus influence the use effect of the carbon source, if want to separate completely can pass glucose and sodium chloride mixture dissolve in absolute ethyl alcohol, separate with the semi-permeable membrane dialysis after forming colloid, the cost is higher, and the calcium sulfate that the sulfuric acid reaction produces is the crystalline precipitate, easy to make the pipeline scale deposit block up, and need to utilize the ion exchange method to remove, it is more troublesome, the calcium carbonate that the oxalic acid reaction produces is a kind of powdery impurity, and it is insoluble in water, can separate with activated carbon powder adsorption filtration in the filter-pressing process, production efficiency is high, and the processing method is simple and fast.
2. In the aspect of production equipment, compared with a conventional preparation method, 45% concentration glucose solution, crude glycerol and water are respectively filled into respective storage barrels, materials are intensively input into a mixing kettle by using a metering pump, the metering work of the materials is completed while the materials are conveyed, the production process flow is effectively simplified, the production period of a carbon source is saved, the carbon source can be produced in batches, two baffle plates are arranged on the inner wall of the mixing kettle, the effect of reinforcing the barrel body of the mixing kettle is achieved on one hand, the service life is prolonged, on the other hand, the existence of the baffle plates enables the materials to generate random flow images when being mixed, the flow direction of a medium is thoroughly changed, so that multidirectional tumbling random flow is formed, the mixing uniformity is effectively improved, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic flow chart of a method for preparing a carbon source for a sewage denitrification process according to the present invention;
FIG. 2 is a schematic flow diagram of a glucose production process according to the present invention;
FIG. 3 is a schematic view showing the overall structure of a carbon source production apparatus for a sewage denitrification process according to the present invention;
FIG. 4 is a schematic view of the internal structure of the mixing kettle of the present invention;
in the figure: 1. a first storage vat; 2. a second storage vat; 3. a third storage vat; 4. a metering pump; 5. a mixing kettle; 6. sealing the cover; 7. a feed inlet; 8. a servo motor; 9. a sampling port; 10. a discharge port; 11. supporting legs; 12. a valve; 13. a motor bracket; 14. a mechanical seal; 15. a baffle plate; 16. a coupling; 17. a stirring shaft; 18. stirring the leaves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, an embodiment of the present invention is shown: a preparation method of a carbon source for a sewage denitrification process comprises the following steps:
step 1: preparing 45% glucose solution, crude glycerol and water, and respectively placing the glucose solution, the crude glycerol and the water into respective storage barrels, wherein the glucose solution is prepared by adopting an acid method, and the raw materials are high-purity corn starch, 71% oxalic acid solution and water;
step 2: conveying the raw materials into a mixing kettle according to components through a metering pump and a pipeline on one side of a storage barrel;
and step 3: the primary dissolution and mixing work of the materials are completed by utilizing a stirring mechanism in the mixing kettle, and the stirring mechanism is driven by a motor;
and 4, step 4: taking out a small amount of solution from a sampling port of the mixing kettle, and measuring the purity of the mixed solution by using a professional instrument;
and 5: and after the purity of the mixed liquid reaches the standard, opening a discharge valve at the lower end of the mixing kettle, and finishing discharging to obtain the carbon source.
Further, the acid process of the glucose solution in the step 1 specifically includes:
step 1-1: firstly, pouring a proper amount of water into a size mixing tank, adding corn starch under the stirring state, continuously adding water with the temperature of 90 ℃ to ensure that the concentration of the starch reaches 22-24 Baume degrees, and then adding oxalic acid solution with the concentration of 71 percent as a catalyst to hydrolyze and saccharify the starch;
step 1-2: conveying the size mixing solution to a pressurizing saccharification tank, gradually pressurizing to enable the temperature in the tank to reach 150 ℃, in the process of pressurizing, opening an exhaust valve to discharge cold air when the temperature rises by 0.98X104PA, closing the exhaust valve again until white smoke appears, repeating the steps to reach the required temperature, measuring the DE value of sugar liquid in the tank in time, and stopping saccharification when the DE value reaches 40;
step 1-3: introducing the saccharification liquid into a cooling tank from a pressurized saccharification tank, and cooling until the temperature reaches 70-75 ℃;
step 1-4: introducing the cooled sugar solution into a neutralization reaction kettle, adding calcium carbonate as a reactant to generate calcium oxalate, continuously adding activated carbon powder with the mass of 0.25% and a proper amount of aqueous solution into the sugar solution, mixing and stirring, and adjusting the pH value to 4.5;
step 1-5: and pressing the sugar solution containing impurities into a filter press for filtering treatment to remove calcium oxalate and activated carbon powder to prepare a clear glucose solution.
Further, in the step 2, a metering pump is used to ensure that the proportion of the 45% glucose solution is 20-25%, the proportion of the crude glycerol is 35-40%, and the balance is water, so that the quality is comprehensively up to 100%.
A preparation device of a carbon source for a sewage denitrification process comprises a first storage barrel 1, a second storage barrel 2, a third storage barrel 3 and a mixing kettle 5, wherein one side of each of the first storage barrel 1, the second storage barrel 2 and the third storage barrel 3 is provided with a metering pump 4, the metering pumps 4 can simultaneously complete the functions of conveying, metering and adjusting materials, thereby simplifying the production process flow, a sealing cover 6 is arranged at the upper end of the mixing kettle 5, the upper end of the sealing cover 6 is provided with a servo motor 8, the servo motor 8 is used for driving a stirring shaft 17 to rotate so as to achieve the effect of mixing materials, one side of the servo motor 8 is provided with a feed inlet 7, the feed inlet 7 and the sealing cover 6 are of an integral structure, one side of the mixing kettle 5 is provided with a sampling port 9, the sampling port 9 is used for taking out a small amount of solution after mixing, the purity of the mixed solution is measured by an instrument, the lower end of the mixing kettle 5 is provided with a discharge port 10, and, and the supporting legs 11 are provided with three, and the supporting legs 11 play a role in supporting and fixing the mixing kettle 5.
Further, first storage vat 1, second storage vat 2 and third storage vat 3 are linked together through metering pump 4 and connecting tube and mixing kettle 5's feed inlet 7, and first storage vat 1, second storage vat 2 and third storage vat 3 are used for storing 45% concentration's glucose solution, crude glycerine and water respectively, and metering pump 4 can be in the defeated material, accomplishes the measurement work of material, the effectual production process flow that has simplified.
Further, servo motor 8 passes through motor support 13 and mixing cauldron 5 fixed connection, servo motor 8's output runs through and extends to mixing cauldron 5's inside, and install mechanical seal 14 with mixing cauldron 5's junction, mixing cauldron 5's inside is provided with (mixing) shaft 17, servo motor 8's output passes through shaft coupling 16 and (mixing) shaft 17 fixed connection, fixed mounting has stirring leaf 18 on (mixing) shaft 17's the outer wall, servo motor 8 can drive (mixing) shaft 17 and the stirring leaf 18 rotation of outer wall, in order to accomplish the first solution and the mixing operation of material.
Further, the inner wall both sides of compounding cauldron 5 all are provided with baffling board 15, and baffling board 15 and compounding cauldron 5's inner wall fixed connection, baffling board 15 has played on the one hand and has consolidated 5 staving of compounding cauldron, increase of service life's effect, and on the other hand, baffling board 15's existence makes the material produce the random flow phenomenon when mixing, thoroughly changes the flow direction of medium to form the multidirectional random flow that rolls, effectively improved the mixing degree of consistency, and production efficiency.
Further, all install valve 12 on feed inlet 7, discharge gate 10 and the sample connection 9 of compounding cauldron 5, valve 12 is used for controlling the medium business turn over of feed inlet 7, discharge gate 10 and sample connection 9, can play sealed effect when closing.
The working principle is as follows: when the device is used, a 45% glucose solution, crude glycerol and water are respectively placed into a first storage barrel 1, a second storage barrel 2 and a third storage barrel 3, all raw materials are conveyed into a mixing kettle 5 through a metering pump 4 and a pipeline on one side of the storage barrels, the metering pump 4 can complete the metering work of the materials while conveying the materials, so that the production process flow is simplified, the materials entering the mixing kettle 5 are mixed under the rotating action of a stirring shaft 17 and stirring blades 18 and are matched with a baffle plate 15 on the inner wall of the mixing kettle 5, so that the disordered flow phenomenon is generated when the materials are mixed, the flow direction of a medium is thoroughly changed, the multidirectional tumbling disordered flow is formed, the mixing uniformity and the production efficiency are effectively improved, a small amount of solution can be taken out from a sample taking port 9 after the mixing is finished, the purity of the mixed solution is measured by a professional instrument, after the purity reaches the standard, a discharge valve at the lower end is opened to complete the discharge, thus obtaining the carbon source.
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 attributes 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. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A preparation method of a carbon source for a sewage denitrification process is characterized by comprising the following steps:
step 1: preparing 45% glucose solution, crude glycerol and water, and respectively placing the glucose solution, the crude glycerol and the water into respective storage barrels, wherein the glucose solution is prepared by adopting an acid method, and the raw materials are high-purity corn starch, 71% oxalic acid solution and water;
step 2: conveying the raw materials into a mixing kettle according to components through a metering pump and a pipeline on one side of a storage barrel;
and step 3: the primary dissolution and mixing work of the materials are completed by utilizing a stirring mechanism in the mixing kettle, and the stirring mechanism is driven by a motor;
and 4, step 4: taking out a small amount of solution from a sampling port of the mixing kettle, and measuring the purity of the mixed solution by using a professional instrument;
and 5: and after the purity of the mixed liquid reaches the standard, opening a discharge valve at the lower end of the mixing kettle, and finishing discharging to obtain the carbon source.
2. The method for preparing a carbon source for a sewage denitrification process according to claim 1, wherein the acid process of the glucose solution in the step 1 specifically comprises:
step 1-1: firstly, pouring a proper amount of water into a size mixing tank, adding corn starch under the stirring state, continuously adding water with the temperature of 90 ℃ to ensure that the concentration of the starch reaches 22-24 Baume degrees, and then adding oxalic acid solution with the concentration of 71 percent as a catalyst to hydrolyze and saccharify the starch;
step 1-2: conveying the size mixing solution to a pressurizing saccharification tank, gradually pressurizing to enable the temperature in the tank to reach 150 ℃, in the process of pressurizing, opening an exhaust valve to discharge cold air when the temperature rises by 0.98X104PA, closing the exhaust valve again until white smoke appears, repeating the steps to reach the required temperature, measuring the DE value of sugar liquid in the tank in time, and stopping saccharification when the DE value reaches 40;
step 1-3: introducing the saccharification liquid into a cooling tank from a pressurized saccharification tank, and cooling until the temperature reaches 70-75 ℃;
step 1-4: introducing the cooled sugar solution into a neutralization reaction kettle, adding calcium carbonate as a reactant to generate calcium oxalate, continuously adding activated carbon powder with the mass of 0.25% and a proper amount of aqueous solution into the sugar solution, mixing and stirring, and adjusting the pH value to 4.5;
step 1-5: and pressing the sugar solution containing impurities into a filter press for filtering treatment to remove calcium oxalate and activated carbon powder to prepare a clear glucose solution.
3. The method for preparing a carbon source for a sewage denitrification process according to claim 1, wherein: in the step 2, a metering pump is used to ensure that the proportion of the 45% glucose solution is 20-25%, the proportion of the crude glycerol is 35-40%, and the balance is water, so that the quality is comprehensively up to 100%.
4. The utility model provides a preparation equipment of carbon source for sewage denitrogenation technology, includes first storage vat (1), second storage vat (2), third storage vat (3) and compounding cauldron (5), its characterized in that: one side of first storage vat (1), second storage vat (2) and third storage vat (3) all is provided with measuring pump (4), upper end installation closing cap (6) of mixing cauldron (5), the upper end of closing cap (6) is provided with servo motor (8), one side of servo motor (8) is provided with feed inlet (7), and feed inlet (7) and closing cap (6) structure as an organic whole, one side of mixing cauldron (5) is provided with sample connection (9), the lower extreme of mixing cauldron (5) is provided with discharge gate (10), the below fixed mounting of mixing cauldron (5) has supporting leg (11), and supporting leg (11) are provided with threely.
5. The apparatus for preparing a carbon source for a denitrification process of wastewater according to claim 4, wherein: the first storage barrel (1), the second storage barrel (2) and the third storage barrel (3) are communicated with a feed inlet (7) of the mixing kettle (5) through a metering pump (4) and a connecting pipeline.
6. The apparatus for preparing a carbon source for a denitrification process of wastewater according to claim 4, wherein: servo motor (8) are through motor support (13) and mixing cauldron (5) fixed connection, the output of servo motor (8) runs through and extends to the inside of mixing cauldron (5), and installs mechanical seal (14) with the junction of mixing cauldron (5), the inside of mixing cauldron (5) is provided with (mixing) shaft (17), shaft coupling (16) and (mixing) shaft (17) fixed connection are passed through to the output of servo motor (8), fixed mounting has stirring leaf (18) on the outer wall of (mixing) shaft (17).
7. The apparatus for preparing a carbon source for a denitrification process of wastewater according to claim 4, wherein: baffle plates (15) are arranged on two sides of the inner wall of the mixing kettle (5), and the baffle plates (15) are fixedly connected with the inner wall of the mixing kettle (5).
8. The apparatus for preparing a carbon source for a denitrification process of wastewater according to claim 4, wherein: and valves (12) are respectively arranged on the feeding port (7), the discharging port (10) and the sampling port (9) of the mixing kettle (5).
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Cited By (4)
| 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 |
| CN113666492A (en) * | 2021-07-09 | 2021-11-19 | 安徽科凌沃特水处理技术有限公司 | Formula and preparation system of composite carbon source for high-biochemical-rate sewage treatment |
| CN114107031A (en) * | 2021-11-12 | 2022-03-01 | 湖南正泰水务有限公司 | Preparation device and preparation method of functional plant carbon source |
| CN114890541A (en) * | 2022-05-26 | 2022-08-12 | 广东碧之江环保能源股份有限公司 | Production method of composite carbon source |
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| CN109485157A (en) * | 2018-11-26 | 2019-03-19 | 四川山水源环保技术有限公司 | A kind of compounded carbons for sewage water denitrification and preparation method thereof and application method |
| CN110194522A (en) * | 2019-05-25 | 2019-09-03 | 天津金辰博科环保科技发展有限公司 | A kind of high-performance bio compounded carbons and preparation method thereof |
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| JPH0622782A (en) * | 1992-07-07 | 1994-02-01 | Japan Organo Co Ltd | Method and device for producing glucose |
| CN108793401A (en) * | 2018-06-14 | 2018-11-13 | 石泰山 | A kind of formula and preparation method thereof of denitrification compounded carbons |
| CN109485157A (en) * | 2018-11-26 | 2019-03-19 | 四川山水源环保技术有限公司 | A kind of compounded carbons for sewage water denitrification and preparation method thereof and application method |
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| CN114107031A (en) * | 2021-11-12 | 2022-03-01 | 湖南正泰水务有限公司 | Preparation device and preparation method of functional plant carbon source |
| CN114890541A (en) * | 2022-05-26 | 2022-08-12 | 广东碧之江环保能源股份有限公司 | Production method of composite carbon source |
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Application publication date: 20201110 |