CN110899293A - Method for reducing acarbose waste residues - Google Patents
Method for reducing acarbose waste residues Download PDFInfo
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- CN110899293A CN110899293A CN201910978461.9A CN201910978461A CN110899293A CN 110899293 A CN110899293 A CN 110899293A CN 201910978461 A CN201910978461 A CN 201910978461A CN 110899293 A CN110899293 A CN 110899293A
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- 239000002699 waste material Substances 0.000 title claims abstract description 198
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- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 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 description 1
- 239000000463 material Substances 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a method for reducing acarbose waste residues, and relates to the technical field of sludge treatment. Comprises the pretreatment of waste slag; anaerobic treatment of waste residues; and (5) post-treatment of waste residues. The anaerobic treatment of the waste residue comprises three-stage anaerobic treatment of the pretreated waste residue, and the pretreated acarbose waste residue liquid is added into a No. 1 tank for hydrolysis through connecting three anaerobic reactors in series, namely the No. 1 tank, the No. 2 tank and the No. 3 tank; adding iron salt with the concentration of 2-10 mg/L into a No. 2 tank, inducing hydrogen-producing acetogenic bacteria to grow actively, and converting micromolecular organic matters which cannot be utilized by methane bacteria into hydrogen or acetic acid which can be utilized; and adding iron salt of 15-500 mg/L into a No. 3 tank, inducing mass propagation of methane bacteria, and reacting by taking hydrogen and acetic acid as reaction substrates. The optimal growth environment and reaction substrates of different floras are regulated in each stage, the effect of grading and phase splitting of anaerobic floras is achieved, the organic solid matters are reduced by anaerobic degradation, and the anaerobic treatment efficiency is improved.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a method for reducing acarbose waste residues.
Background
Acarbose (Acarbose) is an α -glucosidase inhibitor, is a complex oligosaccharide, has a structure similar to that of oligosaccharide, and can compete with oligosaccharide at the brush border of cells at the upper part of the small intestine to be reversibly combined with α -glucosidase, so that the activity of various α -glucosidase such as maltase, isomaltase, glucoamylase and sucrase is inhibited, starch is decomposed into oligosaccharide such as maltose (disaccharide), maltotriose and dextrin (oligosaccharide), the speed of decomposing sucrose into glucose and fructose is reduced, and the absorption of glucose in intestinal tract is reduced, thereby relieving postprandial hyperglycemia and reducing blood glucose.
The production process is accompanied with the generation of a large amount of fermentation waste residues, the fermentation waste residues contain a large amount of fermentation mycelia, residual culture medium and acarbose drug residues, and if the fermentation waste residues are not properly treated, the environmental pollution is easily caused.
The Chinese patent with publication number 108889762A proposes a harmless degradation treatment method for waste residue in pharmaceutical industry, which comprises waste residue dilution, waste residue refinement, low-temperature spraying, waste residue thermal decomposition and residue crushing. The invention has the following beneficial effects: not only can realize the harmless degradation treatment of the waste residue, but also can prolong the service life of equipment, and is environment-friendly and pollution-free.
The method and the burning method mainly adopted at present are used for treating the acarbose waste residue, have the defects of high cost, limited treatment capacity and the like, and cannot meet the treatment requirement of a large amount of acarbose waste residue. Therefore, the development of a process capable of effectively reducing the solid quality of the acarbose waste residue is urgently needed in the field, so that the reduction treatment of the acarbose waste residue is realized.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for reducing acarbose waste residues. In order to achieve the above object of the present invention, the present invention provides the following technical solutions: a method for reducing acarbose waste residues comprises the following steps:
A. pretreatment of waste residues: mixing and stirring acarbose fermentation waste residues and water in a pretreatment tank to prepare waste residue liquid with the solid mass concentration of 20-60 g/L, and adding alkali into the waste residue liquid;
B. anaerobic treatment of waste residues; the anaerobic treatment of the waste residue comprises the multi-stage anaerobic treatment of the pretreated waste residue; the multistage anaerobic treatment comprises at least three stages of anaerobic treatment;
C. post-treatment of waste residues: and (3) adding a flocculating agent after the waste residue after the multistage anaerobic treatment flows into a sedimentation tank, standing and precipitating, and then carrying out solid-liquid separation to obtain the waste residue after the reduction treatment.
More preferably, the base comprises NaOH, KOH, Ca (OH)2One kind of (1).
More preferably, the base comprises one of NaOH and KOH.
Preferably, the pH value of the pretreatment of the waste residue in the step A is 8.0-8.5.
Preferably, the reaction conditions for the pretreatment of the waste residue in the step A are as follows: stirring and reacting for 0.8-1 d by a stirrer, wherein the rotating speed is 100rpm, and the reaction temperature is 50-60 ℃.
Preferably, the step B specifically includes the following steps:
1, taking at least three anaerobic reactors, namely at least one No. 1 tank, at least one No. 2 tank and at least one No. 3 tank, in series in sequence from bottom to top; each anaerobic reactor is internally and circularly stirred by a pump;
b1, adding the acarbose waste residue liquid pretreated in the step A into a 1# tank, and inoculating anaerobic sludge, wherein the inoculation amount is 40-60% of the volume of the 1# tank;
c1, inoculating anaerobic sludge in the 2# tank, wherein the inoculation amount is 40-60% of the volume of the 2# tank, and adding iron salt for the first time;
d1, inoculating anaerobic sludge in the 3# tank, wherein the inoculation amount is 40-60% of the volume of the 3# tank, and adding iron salt for the second time;
the iron salt comprises one or more of ferric chloride and ferric nitrate.
Preferably, the total volume of the acarbose waste residue liquid pretreated in the step A and added into the tank No. 1 in the step b1 at each time is 1/12-1/20 of the total effective volume of the three anaerobic reactors connected in series in the step a 1; the reaction temperature is 35-40 ℃, and the pH value is 6.7-6.9.
Preferably, the concentration of the iron salt added into the 2# tank in the step c1 is 2-10 mg/L, the reaction temperature is 35-40 ℃, and the pH value is 7.2-7.3.
Preferably, the concentration of the iron salt added into the 3# tank in the step d1 is 15-500 mg/L, the reaction temperature is 35-40 ℃, and the pH value is 7.5-7.8; more preferably, the concentration of the iron salt in the tank No. 3 in the step d1 is 15-30 mg/L.
Preferably, in the step C: and (4) adding a flocculating agent into the sedimentation tank and then standing for 5-8 h.
Preferably, the mass ratio of the flocculating agent to the waste residue subjected to the three-stage anaerobic treatment is 1-2 g/m3。
Preferably, the flocculant comprises one or more of polyacrylamide, polyaluminium chloride, polyaluminium sulfate, polyferric chloride and polyferric sulfate.
In summary, compared with the prior art, the invention has the following beneficial effects:
(1) through the three times of anaerobic treatment in the process method, no iron salt is added into the No. 1 anaerobic reactor, so that the hydrolytic bacteria can be rapidly propagated to form dominant flora, and the hydrolysis reaction can be rapidly carried out; adding a proper amount of ferric salt into a No. 2 tank to ensure that hydrogen-producing acetogenic bacteria grow actively and convert micromolecular organic matters which cannot be utilized by methane bacteria into hydrogen or acetic acid which can be utilized by the methane bacteria; adding a proper amount of ferric salt into the No. 3 tank to ensure that methane bacteria are propagated in a large quantity, and taking hydrogen or acetic acid generated by hydrogen-producing acetogenic bacteria in the previous tank as a reaction substrate, thereby finally completing the process of anaerobic degradation and reducing organic solid matters; the solid mass removal rate in the acarbose fermentation waste residue reaches more than 60%, the solid mass of the waste residue is greatly reduced, and the solid waste treatment cost is greatly reduced;
(2) the anaerobic treatment process of the acarbose fermentation waste residue is a complex process which is completed by multiple floras together, single-stage anaerobic treatment can only unify the growth conditions of all microorganisms on one level, so that the microorganisms cannot be in the optimal growth condition, and the anaerobic treatment process is divided into 3 stages and 3 stages for 3-stage anaerobic treatment, so that the hydrolysis, hydrogen production, acetic acid production and methane production processes are respectively completed in 3 anaerobic reactors; adjusting the optimal growth environment and reaction substrates of different floras in each stage, and adding ferric chloride with different concentrations to differentiate the floras to form the effect of grading and phase splitting of anaerobic floras, so that the anaerobic treatment efficiency is improved;
(3) the dehydration performance of the residual solid in the acarbose fermentation waste residue is improved, and the pollutant discharge is reduced.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a process flow diagram of a method for reducing acarbose waste residues according to the present invention.
Detailed Description
The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention, such as adding a plurality of 1# cans, 2# cans or 3# cans to the invention, and all of them fall into the scope of the invention. The present invention will be described in detail with reference to the following specific examples:
evaluation criterion and calculation method
1. The removal rate of total solid matters in the waste residue;
calculating the following formulas (1) to (3):
η＝(m1-m2)/m1×100％(1)
wherein η represents the solid matter removal rate (%), m1Is the total dry weight (g) of the feed; m is2Is total dry weight (g) of discharged material; SS1i is the suspended solids concentration (g/L) of the feed on day i; v1i is the volume of feed on day i (L); SS2i is the concentration of suspended solid (g/L) discharged on the ith day; v2i is the volume of the discharge on day i (L); n is the number of days the system is running.
2. Solid moisture content;
the calculation is as formula (4):
ω＝(M-m)/M×100％ (4)
in the formula: omega is the water content (%) of the solid after press drying; m is the total weight (g) of the solid after press drying; m is the weight (g) of the dried solid in an oven at 105 ℃ to a constant weight.
Second, examples 1 to 9, comparative examples 1 to 20
Example 1:
a method for reducing acarbose waste residue comprises 1 pretreatment tank, 3 anaerobic reactors and 1 sedimentation tank, as shown in figure 1, and comprises the following steps:
A. pretreating waste residues; in a pretreatment tank, 1t of acarbose fermentation waste residue is mixed with clear water to form waste residue liquid with the solid mass concentration of 20 g/L; adding KOH solid to adjust the pH value to 8.0; the stirring speed of the stirrer is 100rpm, the reaction temperature is 50 ℃, and the reaction time is 0.8 d.
B. Anaerobic treatment of waste residues; transferring the pretreated acarbose waste residue liquid into three-stage series anaerobic reactors with the total effective volume of 6000L, wherein each anaerobic reactor with the effective volume of 2000L is connected in series in a mode of feeding in and discharging out from the bottom, and each anaerobic reactor is internally and circularly stirred by a pump; inoculating commercially available anaerobic sludge into the anaerobic reactors, wherein the inoculation amount of the anaerobic sludge of each anaerobic reactor is 40% of the volume of the single tank; anaerobic sludge was purchased from Shanghai Yue environmental technologies, Inc.
Adding 300L of acarbose waste residue liquid into a tank No. 1 every day, wherein the volume of the acarbose waste residue liquid is 1/20 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 35 ℃, and the pH value is 6.7; adding 600mg of ferric nitrate solid into a No. 2 tank every day, wherein the reaction temperature is 35 ℃, and the pH value is 7.2; 4500mg of ferric nitrate solid is added into a 3# tank every day, the reaction temperature is 35 ℃, and the pH value is 7.5.
C. Post-treatment of waste residues; the feed liquid discharged from the No. 3 tank flows into a sedimentation tank, and polyaluminium chloride is added into the sedimentation tank, wherein the adding amount is 1g/m3And (5) precipitating for 5 hours, and drying the precipitate by a plate-and-frame filter press to obtain the waste residue after the reduction treatment.
By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 65%, the water content of the pressed solid is 56%, and the dehydration performance is good.
Example 2:
a method for reducing acarbose waste residue comprises 1 pretreatment tank, 3 anaerobic reactors and 1 sedimentation tank, as shown in figure 1, and comprises the following steps:
A. pretreating waste residues; in a pretreatment tank, 1t of acarbose fermentation waste residue is mixed with clear water to form waste residue liquid with the solid mass concentration of 40 g/L; adding KOH solid to adjust the pH value to 8.3; the stirring speed of the stirrer is 100rpm, the reaction temperature is 55 ℃, and the reaction time is 0.9 d.
B. Anaerobic treatment of waste residues; transferring the pretreated acarbose waste residue liquid into three-stage series anaerobic reactors with the total effective volume of 6000L, wherein each anaerobic reactor with the effective volume of 2000L is connected in series in a mode of feeding in and discharging out from the bottom, and each anaerobic reactor is internally and circularly stirred by a pump; inoculating commercially available anaerobic sludge into the anaerobic reactors, wherein the inoculation amount of the anaerobic sludge of each anaerobic reactor is 50% of the volume of the single tank; anaerobic sludge was purchased from Shanghai Yue environmental technologies, Inc.
400L of acarbose waste residue liquid is added into a tank No. 1 every day, which is 1/15 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 37 ℃, and the pH value is 6.8; 2400mg of ferric nitrate solid is added into a No. 2 tank every day, the reaction temperature is 37 ℃, and the pH value is 7.2; 12000mg of ferric nitrate solid is added into a 3# tank every day, the reaction temperature is 37 ℃, and the pH value is 7.6.
C. Post-treatment of waste residues; the feed liquid discharged from the No. 3 tank flows into a sedimentation tank, and polyaluminium chloride is added into the sedimentation tank, wherein the adding amount is 1.5g/m3And (5) precipitating for 7 hours, and drying the precipitate by a plate-and-frame filter press to obtain the waste residue after the reduction treatment.
By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 68%, the water content of the pressed solid is 58%, and the dehydration performance is good.
Example 3:
a method for reducing acarbose waste residue comprises 1 pretreatment tank, 3 anaerobic reactors and 1 sedimentation tank, as shown in figure 1, and comprises the following steps:
A. pretreating waste residues; in a pretreatment tank, 1t of acarbose fermentation waste residue is mixed with clear water to form waste residue liquid with solid mass concentration of 60 g/L; adding KOH solid to adjust the pH value to 8.5; the stirring speed was 100rpm, the reaction temperature was 60 ℃ and the reaction time was 1 d.
B. Anaerobic treatment of waste residues; transferring the pretreated acarbose waste residue liquid into three-stage series anaerobic reactors with the total effective volume of 6000L, wherein each anaerobic reactor with the effective volume of 2000L is connected in series in a mode of feeding in and discharging out from the bottom, and each anaerobic reactor is internally and circularly stirred by a pump; inoculating commercially available anaerobic sludge into the anaerobic reactors, wherein the inoculation amount of the anaerobic sludge of each anaerobic reactor is 60 percent of the volume of the single tank; anaerobic sludge was purchased from Shanghai Yue environmental technologies, Inc.
500L of acarbose waste residue liquid is added into a tank No. 1 every day, which is 1/12 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 40 ℃, and the pH value is 6.9; 5000mg of ferric nitrate solid is added into a No. 2 tank every day, the reaction temperature is 40 ℃, and the pH value is 7.3; 250000mg of ferric nitrate solid is added into a 3# tank every day, the reaction temperature is 40 ℃, and the pH value is 7.8.
C. Post-treatment of waste residues; the feed liquid discharged from the No. 3 tank flows into a sedimentation tank, and polyaluminium chloride is added into the sedimentation tank, wherein the adding amount is 2g/m3And (4) precipitating for 8 hours, and drying the precipitate by a plate-and-frame filter press to obtain the waste residue after the reduction treatment.
By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 69%, the water content of the pressed solid is 53%, and the dehydration performance is good.
Example 4:
a method for reducing acarbose waste residue comprises 1 pretreatment tank, 3 anaerobic reactors and 1 sedimentation tank, as shown in figure 1, and comprises the following steps:
A. pretreating waste residues; in a pretreatment tank, 1t of acarbose fermentation waste residue is mixed with clear water to form waste residue liquid with the solid mass concentration of 20 g/L; adjusting the pH value to 8.0 by using NaOH solid; the rotation speed is 100rpm, the reaction temperature is 50 ℃ and the reaction time is 0.8 d.
B. Anaerobic treatment of waste residues; transferring the pretreated acarbose waste residue liquid into three-stage series anaerobic reactors with the total effective volume of 6000L, wherein each anaerobic reactor with the effective volume of 2000L is connected in series in a mode of feeding in and discharging out from the bottom, and each anaerobic reactor is internally and circularly stirred by a pump; inoculating commercially available anaerobic sludge into the anaerobic reactors, wherein the inoculation amount of the anaerobic sludge of each anaerobic reactor is 40% of the volume of the single tank; anaerobic sludge was purchased from Shanghai Yue environmental technologies, Inc.
Adding 300L of acarbose waste residue liquid into a tank No. 1 every day, wherein the volume of the acarbose waste residue liquid is 1/20 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 35 ℃, and the pH value is 6.7; adding 600mg of ferric chloride solid into a No. 2 tank every day, wherein the reaction temperature is 35 ℃, and the pH value is 7.2; 4500mg of ferric chloride solid is added into a 3# tank every day, the reaction temperature is 35 ℃, and the pH value is 7.5.
C. Post-treatment of waste residues; the feed liquid discharged from the No. 3 tank flows into a sedimentation tank, and polyacrylamide is added into the sedimentation tank, wherein the adding amount is 1g/m3And (5) precipitating for 5 hours, and drying the precipitate by a plate-and-frame filter press to obtain the waste residue after the reduction treatment.
By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 61%, the water content of the pressed solid is 60%, and the dehydration performance is good.
Example 5:
a method for reducing acarbose waste residue comprises 1 pretreatment tank, 3 anaerobic reactors and 1 sedimentation tank, as shown in figure 1, and comprises the following steps:
A. pretreating waste residues; in a pretreatment tank, 1t of acarbose fermentation waste residue is mixed with clear water to form waste residue liquid with the solid mass concentration of 40 g/L; adjusting the pH value to 8.3 by using NaOH solid; the rotation speed is 100rpm, the reaction temperature is 55 ℃ and the reaction time is 0.9 d.
B. Anaerobic treatment of waste residues; transferring the pretreated acarbose waste residue liquid into three-stage series anaerobic reactors with the total effective volume of 6000L, wherein each anaerobic reactor with the effective volume of 2000L is connected in series in a mode of feeding in and discharging out from the bottom, and each anaerobic reactor is internally and circularly stirred by a pump; inoculating commercially available anaerobic sludge into the anaerobic reactors, wherein the inoculation amount of the anaerobic sludge of each anaerobic reactor is 50% of the volume of the single tank; anaerobic sludge was purchased from Shanghai Yue environmental technologies, Inc.
400L of acarbose waste residue liquid is added into a tank No. 1 every day, which is 1/15 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 37 ℃, and the pH value is 6.8; 2400mg of ferric chloride solid is added into a No. 2 tank every day, the reaction temperature is 37 ℃, and the pH value is 7.2; 12000mg of ferric chloride solid is added into a 3# tank every day, the reaction temperature is 37 ℃, and the pH value is 7.6.
C. Post-treatment of waste residues; the feed liquid discharged from the No. 3 tank flows into a sedimentation tank, and polyacrylamide is added into the sedimentation tank, wherein the adding amount is 1.5g/m3And (4) precipitating for 6 hours, and drying the precipitate by a plate-and-frame filter press to obtain the waste residue after the reduction treatment.
By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 70%, the water content of the pressed solid is 48%, and the dehydration performance is good.
Example 6:
a method for reducing acarbose waste residue comprises 1 pretreatment tank, 3 anaerobic reactors and 1 sedimentation tank, as shown in figure 1, and comprises the following steps:
A. pretreating waste residues; in a pretreatment tank, 1t of acarbose fermentation waste residue is mixed with clear water to form waste residue liquid with solid mass concentration of 60 g/L; adjusting the pH value to 8.5 by using NaOH solid; the rotation speed is 100rpm, the reaction temperature is 60 ℃, and the reaction time is 1 d.
B. Anaerobic treatment of waste residues; transferring the pretreated acarbose waste residue liquid into three-stage series anaerobic reactors with the total effective volume of 6000L, wherein each anaerobic reactor with the effective volume of 2000L is connected in series in a mode of feeding in and discharging out from the bottom, and each anaerobic reactor is internally and circularly stirred by a pump; inoculating commercially available anaerobic sludge into the anaerobic reactors, wherein the inoculation amount of the anaerobic sludge of each anaerobic reactor is 40-60% of the volume of the single tank; anaerobic sludge was purchased from Shanghai Yue environmental technologies, Inc.
500L of acarbose waste residue liquid is added into a tank No. 1 every day, which is 1/12 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 40 ℃, and the pH value is 6.9; 5000mg of ferric chloride solid is added into a No. 2 tank every day, the reaction temperature is 40 ℃, and the pH value is 7.3; 250000mg of ferric chloride solid is added into a 3# tank every day, the reaction temperature is 40 ℃, and the pH value is 7.8.
C. Post-treatment of waste residues; the feed liquid discharged from the No. 3 tank flows into a sedimentation tank, and polyacrylamide is added into the sedimentation tank, wherein the adding amount is 2g/m3And (4) precipitating for 8 hours, and drying the precipitate by a plate-and-frame filter press to obtain the waste residue after the reduction treatment.
By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 65%, the water content of the pressed solid is 55%, and the dehydration performance is good.
Example 7:
a method for reducing acarbose waste residue comprises 1 pretreatment tank, 3 anaerobic reactors and 1 sedimentation tank, as shown in figure 1, and comprises the following steps:
A. pretreating waste residues; in a pretreatment tank, 1t of acarbose fermentation waste residue is mixed with clear water to form waste residue liquid with the solid mass concentration of 20 g/L; with Ca (OH)2Adjusting the pH value of the solid to 8.0; the rotation speed is 100rpm, the reaction temperature is 50 ℃ and the reaction time is 0.8 d.
B. Anaerobic treatment of waste residues; transferring the pretreated acarbose waste residue liquid into three-stage series anaerobic reactors with the total effective volume of 6000L, wherein each anaerobic reactor with the effective volume of 2000L is connected in series in a mode of feeding in and discharging out from the bottom, and each anaerobic reactor is internally and circularly stirred by a pump; inoculating commercially available anaerobic sludge into the anaerobic reactors, wherein the inoculation amount of the anaerobic sludge of each anaerobic reactor is 40-60% of the volume of the single tank; anaerobic sludge was purchased from Shanghai Yue environmental technologies, Inc.
Adding 300L of acarbose waste residue liquid into a tank No. 1 every day, wherein the volume of the acarbose waste residue liquid is 1/20 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 35 ℃, and the pH value is 6.7; adding 600mg of ferric chloride solid into a No. 2 tank every day, wherein the reaction temperature is 35 ℃, and the pH value is 7.2; 4500mg of ferric chloride solid is added into a 3# tank every day, the reaction temperature is 35 ℃, and the pH value is 7.5.
C. Waste slagCarrying out post-treatment; the feed liquid discharged from the No. 3 tank flows into a sedimentation tank, and polyacrylamide is added into the sedimentation tank, wherein the adding amount is 1g/m3And (5) precipitating for 5 hours, and drying the precipitate by a plate-and-frame filter press to obtain the waste residue after the reduction treatment.
Through the treatment of the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 66%, the water content of the dried solid is 54%, the dehydration performance is good, but in the using process, the fact that the calcium hydroxide equipment is easy to scale is found compared with the calcium hydroxide equipment in example 4.
Example 8:
a method for reducing acarbose waste residue comprises 1 pretreatment tank, 3 anaerobic reactors and 1 sedimentation tank, as shown in figure 1, and comprises the following steps:
A. pretreating waste residues; in a pretreatment tank, 1t of acarbose fermentation waste residue is mixed with clear water to form waste residue liquid with the solid mass concentration of 40 g/L; with Ca (OH)2Adjusting the pH value of the solid to 8.3; the rotation speed is 100rpm, the reaction temperature is 55 ℃ and the reaction time is 0.9 d.
B. Anaerobic treatment of waste residues; transferring the pretreated acarbose waste residue liquid into three-stage series anaerobic reactors with the total effective volume of 6000L, wherein each anaerobic reactor with the effective volume of 2000L is connected in series in a mode of feeding in and discharging out from the bottom, and each anaerobic reactor is internally and circularly stirred by a pump; inoculating commercially available anaerobic sludge into the anaerobic reactors, wherein the inoculation amount of the anaerobic sludge of each anaerobic reactor is 40-60% of the volume of the single tank; anaerobic sludge was purchased from Shanghai Yue environmental technologies, Inc.
400L of acarbose waste residue liquid is added into a tank No. 1 every day, which is 1/15 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 37 ℃, and the pH value is 6.8; 2400mg of ferric chloride solid is added into a No. 2 tank every day, the reaction temperature is 37 ℃, and the pH value is 7.2; 12000mg of ferric chloride solid is added into a 3# tank every day, the reaction temperature is 37 ℃, and the pH value is 7.6.
C. Post-treatment of waste residues; the feed liquid discharged from the No. 3 tank flows into a sedimentation tank, and polyacrylamide is added into the sedimentation tank, wherein the adding amount is 1.5g/m3And (4) precipitating for 6 hours, and drying the precipitate by a plate-and-frame filter press to obtain the waste residue after the reduction treatment.
Through the treatment of the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 63%, the water content of the dried solid is 60%, the dehydration performance is good, but in the using process, the fact that the calcium hydroxide equipment is easy to scale is found compared with the calcium hydroxide equipment in example 5.
Example 9:
a method for reducing acarbose waste residue comprises 1 pretreatment tank, 3 anaerobic reactors and 1 sedimentation tank, as shown in figure 1, and comprises the following steps:
A. pretreating waste residues; in a pretreatment tank, 1t of acarbose fermentation waste residue is mixed with clear water to form waste residue liquid with the solid mass concentration of 40 g/L; adjusting the pH value to 8.3 by using NaOH solid; the rotation speed is 100rpm, the reaction temperature is 55 ℃ and the reaction time is 0.9 d.
B. Anaerobic treatment of waste residues; transferring the pretreated acarbose waste residue liquid into three-stage series anaerobic reactors with the total effective volume of 6000L, wherein each anaerobic reactor with the effective volume of 2000L is connected in series in a mode of feeding in and discharging out from the bottom, and each anaerobic reactor is internally and circularly stirred by a pump; inoculating commercially available anaerobic sludge into the anaerobic reactors, wherein the inoculation amount of the anaerobic sludge of each anaerobic reactor is 50% of the volume of the single tank; anaerobic sludge was purchased from Shanghai Yue environmental technologies, Inc.
400L of acarbose waste residue liquid is added into a tank No. 1 every day, which is 1/15 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 37 ℃, and the pH value is 6.8; 2400mg of ferric chloride solid is added into a No. 2 tank every day, the reaction temperature is 37 ℃, and the pH value is 7.2; 20000mg of ferric chloride solid is added into a 3# tank every day, the reaction temperature is 37 ℃, and the pH value is 7.6.
C. Post-treatment of waste residues; the feed liquid discharged from the No. 3 tank flows into a sedimentation tank, and polyacrylamide is added into the sedimentation tank, wherein the adding amount is 1.5g/m3And (4) precipitating for 6 hours, and drying the precipitate by a plate-and-frame filter press to obtain the waste residue after the reduction treatment.
By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 68%, the water content of the pressed solid is 46%, and the dehydration performance is good.
Comparative example 1
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: adding 400L of acarbose waste residue liquid into a No. 1 tank every day, wherein the reaction temperature is 37 ℃, and the pH value is 6.8; 0mg of ferric chloride solid is added into a No. 2 tank every day, the reaction temperature is 37 ℃, and the pH value is 7.2; 12000mg of ferric chloride solid is added into a 3# tank every day, the reaction temperature is 37 ℃, and the pH value is 7.6; the remaining operations and conditions were the same. Through the process treatment, namely the treatment modes in the No. 2 tank and the No. 1 tank are basically the same without adding iron salt, compared with the example 5, the process is similar to the 2-stage anaerobic process, the total solid mass dry weight of the acarbose waste residue can be reduced by 35%, the water content of the pressed solid is 80%, and the dehydration performance is poor.
Comparative example 2
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: adding 400L of acarbose waste residue liquid into a No. 1 tank every day, wherein the reaction temperature is 37 ℃, and the pH value is 6.8; 12000mg of ferric chloride solid is added into a No. 2 tank every day, the reaction temperature is 37 ℃, and the pH value is 7.2; 12000mg of ferric chloride solid is added into a 3# tank every day, the reaction temperature is 37 ℃, and the pH value is 7.6; the remaining operations and conditions were the same. After the process treatment, namely the treatment modes in the 2# tank and the 3# tank are basically the same, the addition amount of the ferric salt is 30mg/L, compared with the example 5, the process is similar to the 2-stage anaerobic process, the total solid mass dry weight of the acarbose waste residue can be reduced by 35%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 3
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: 400L of acarbose waste residue liquid is added into a tank No. 1 every day, which is 1/15 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 37 ℃, and the pH value is 6.8; 2400mg of ferric chloride solid is added into a No. 2 tank every day, the reaction temperature is 37 ℃, and the pH value is 7.2; 2400mg of ferric chloride solid is added into a 3# tank every day, the reaction temperature is 37 ℃, and the pH value is 7.6; the remaining operations and conditions were the same. Through the process treatment, namely the treatment modes in the 2# tank and the 3# tank are basically the same, the addition amount of the ferric salt is 6mg/L, compared with the example 5, the process is similar to the 2-stage anaerobic process, the total solid mass dry weight of the acarbose waste residue can be reduced by 42%, the water content of the pressed solid is 71%, and the dehydration performance is poor.
Comparative example 4
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: 400L of acarbose waste residue liquid is added into a tank No. 1 every day, which is 1/15 of the total volume of the three-stage series anaerobic reactor, the reaction temperature is 37 ℃, and the pH value is 6.8; 2400mg of ferric chloride solid is added into a No. 2 tank every day, the reaction temperature is 37 ℃, and the pH value is 7.2; 0mg of ferric chloride solid is added into a 3# tank every day, the reaction temperature is 37 ℃, and the pH value is 7.6; the remaining operations and conditions were the same. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 42%, the water content of the pressed solid is 71%, and the dehydration performance is poor.
Comparative example 5
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: the rest operation and conditions are the same as those of the No. 1 anaerobic reactor without inoculating the commercial anaerobic sludge. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 44%, the water content of the pressed solid is 75%, and the dehydration performance is poor.
Comparative example 6
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: in the step B, ferric chloride is not added into the No. 2 tank and the No. 3 tank in the three-stage series anaerobic reactor, and the rest operation and conditions are the same. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 32%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 7
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: the pH of the pretreatment of the waste residue in step a was 6, and the rest of the operations and conditions were the same. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 35%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 8
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: and in the step B, the inoculation amount of the anaerobic sludge inoculated into the No. 2 tank is 20% of the volume of the No. 2 tank, and the rest operation and conditions are the same. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 35%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 9
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: and in the step B, the inoculation amount of the anaerobic sludge inoculated into the 2# tank is 80% of the volume of the 2# tank, and the rest operation and conditions are the same. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 35%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 10
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: and in the step B, the inoculation amount of the anaerobic sludge inoculated into the 3# tank is 20% of the volume of the 3# tank, and the rest operation and conditions are the same. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 35%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 11
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: and in the step B, the inoculation amount of the anaerobic sludge inoculated into the 3# tank is 80% of the volume of the 3# tank, and the rest operation and conditions are the same. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 35%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 12
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: and B, adding ferric salts into the 2# tank and the 3# tank in the step B, wherein the types of the ferric salts are ferric sulfate, and the rest operation and conditions are the same. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 35%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 13
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: step B was performed under the same conditions as above with pH 5 in tank # 1. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 33%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 14
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: step B was performed under the same conditions as above with pH 8 in tank # 1. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 33%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 15
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: step B was performed under the same conditions as above with pH 6 in tank # 2. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 32%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 16
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: step B was performed under the same conditions as above under pH 8.5 in tank # 2. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 32%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 17
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: step B was performed under the same conditions as above with pH 6 in tank # 3. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 33%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 18
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: step B was performed under the same conditions as above with pH 9 in tank # 3. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 33%, the water content of the pressed solid is 79%, and the dehydration performance is poor.
Comparative example 19
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: transferring the pretreated acarbose waste residue liquid to a secondary series anaerobic reactor with the total effective volume of 4000L, and inoculating commercially available anaerobic sludge in the anaerobic reactor; adding 400L of acarbose waste residue liquid into a No. 1 tank every day, wherein the reaction temperature is 37 ℃, and the pH value is 6.8; ferric chloride is not added into the two-stage series anaerobic reactor, the feed liquid discharged by the last anaerobic reactor directly flows into a sedimentation tank, and polyacrylamide is added into the sedimentation tank, wherein the adding amount is 1.5g/m3And the precipitation time is 6 hours, and the precipitated precipitate is pressed and dried by a plate and frame filter press to obtain the waste residue after the reduction treatment. By the process, the total solid mass and dry weight of the acarbose waste residue can be reduced by 40%, the water content of the pressed solid is 72%, and the dehydration performance is poor.
Comparative example 20
A method for reducing and treating acarbose waste residue is different from the method in example 5 only in that: transferring the pretreated acarbose waste residue liquid to a single-stage anaerobic reactor with the total effective volume of 2000L, and inoculating commercially available anaerobic sludge in the anaerobic reactor; adding 400L of acarbose waste residue liquid every day, wherein the reaction temperature is 37 ℃, and the pH value is 6.8; directly flowing the feed liquid discharged by the anaerobic reactor into a sedimentation tank without adding ferric chloride in a single-stage series anaerobic reactor, and adding polyacrylamide into the sedimentation tank with the dosage of 1.5g/m3And the precipitation time is 6 hours, and the precipitated precipitate is pressed and dried by a plate and frame filter press to obtain the waste residue after the reduction treatment. After the treatment by the process, the total solid mass of the acarbose waste residue is dryThe weight can be reduced by 32%, the water content of the solid after pressing and drying is 85%, and the dehydration performance is poor.
In conclusion, the solid mass removal rate in the acarbose fermentation waste residue is more than 60% after three times of anaerobic treatment by the process method, the solid mass of the waste residue is greatly reduced, and the solid waste treatment cost is greatly reduced; fills the domestic blank of acarbose fermentation waste residue treatment, greatly improves the anaerobic treatment efficiency and reduces the pollutant discharge.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A method for reducing acarbose waste residue is characterized by comprising the following steps:
A. pretreatment of waste residues: mixing and stirring acarbose fermentation waste residues and water in a pretreatment tank to prepare waste residue liquid with the solid mass concentration of 20-60 g/L, and adding alkali into the waste residue liquid;
B. anaerobic treatment of waste residues; the anaerobic treatment of the waste residue comprises the multi-stage anaerobic treatment of the pretreated waste residue; the multistage anaerobic treatment comprises at least three stages of anaerobic treatment;
C. post-treatment of waste residues: and (3) adding a flocculating agent after the waste residue after the multistage anaerobic treatment flows into a sedimentation tank, standing and precipitating, and then carrying out solid-liquid separation to obtain the waste residue after the reduction treatment.
2. The method for reducing acarbose waste residue according to claim 1, wherein the pretreated waste residue obtained in the step A has a pH of 8.0 to 8.5.
3. The method for reducing acarbose waste residue according to claim 1, wherein the reaction conditions for the pretreatment of the waste residue in the step A are as follows: stirring and reacting for 0.8-1 d by a stirrer, wherein the rotating speed is 100rpm, and the reaction temperature is 50-60 ℃.
4. The method for reducing acarbose waste residue according to claim 1, wherein the multistage anaerobic treatment in the step B comprises at least three stages of anaerobic treatment, and specifically comprises the following steps:
1, taking at least three anaerobic reactors, namely at least one No. 1 tank, at least one No. 2 tank and at least one No. 3 tank, in series in sequence from bottom to top; each anaerobic reactor is internally and circularly stirred by a pump;
b1, adding the acarbose waste residue liquid pretreated in the step A into a 1# tank, and inoculating anaerobic sludge, wherein the inoculation amount is 40-60% of the volume of the 1# tank;
c1, inoculating anaerobic sludge in the 2# tank, wherein the inoculation amount is 40-60% of the volume of the 2# tank, and adding iron salt for the first time;
d1, inoculating anaerobic sludge in the 3# tank, wherein the inoculation amount is 40-60% of the volume of the 3# tank, and adding iron salt for the second time;
the iron salt comprises one or more of ferric chloride and ferric nitrate.
5. The method for reducing the acarbose waste residue according to claim 4, wherein the total volume of the acarbose waste residue liquid pretreated in the step A and added to the tank # 1 in the step b1 at each time is 1/12-1/20 of the total effective volume of the three anaerobic reactors connected in series in the step a 1; the reaction temperature is 35-40 ℃, and the pH value is 6.7-6.9.
6. The method for reducing acarbose waste residue according to claim 4, wherein the concentration of the iron salt added into the 2# tank in the step c1 is 2-10 mg/L, the reaction temperature is 35-40 ℃, and the pH is 7.2-7.3.
7. The method for reducing acarbose waste residue according to claim 4, wherein the concentration of the iron salt added into the tank 3# in the step d1 is 15-500 mg/L, the reaction temperature is 35-40 ℃, and the pH is 7.5-7.8.
8. A method for reducing acarbose waste residue according to claim 1, wherein in the step C: and (4) adding a flocculating agent into the sedimentation tank and then standing for 5-8 h.
9. The method for reducing acarbose waste residue according to claim 8, wherein the mass ratio of the flocculating agent to the waste residue after the three-stage anaerobic treatment is 1-2 g/m3。
10. The method for reducing acarbose waste residue according to claim 8, wherein the flocculant comprises one or more of polyacrylamide, polyaluminum chloride, polyaluminum sulfate, polyferric chloride and polyferric sulfate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978461.9A CN110899293A (en) | 2019-10-15 | 2019-10-15 | Method for reducing acarbose waste residues |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112375693A (en) * | 2020-11-19 | 2021-02-19 | 陕西麦可罗生物科技有限公司 | Method for preparing microbial agent by utilizing natural bioflocculant to pretreat kasugamycin fermentation hyphae |
| CN114833181A (en) * | 2022-06-21 | 2022-08-02 | 内蒙古微技元生态科技有限公司 | Harmless treatment method of antibiotic fermentation fungus residues |
| CN114957349A (en) * | 2022-06-30 | 2022-08-30 | 宁夏华吉生物有限公司 | Pretreatment and filtration method of acarbose fermentation liquor |
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| IL143225A (en) * | 2000-05-24 | 2008-03-20 | Pfizer | Preparation of medicaments containing alpha-amylase inhibitors for the treatment of rumen acidosis |
| CN103820315B (en) * | 2014-03-07 | 2015-09-02 | 河北科技大学 | A kind of device and method of cephalosporin dreg harmless treatment |
| CN104212840B (en) * | 2014-09-03 | 2017-12-12 | 郑州大学 | A kind of processing method of antibiotic fermentation bacteria residue |
| CN105583214B (en) * | 2016-01-11 | 2017-09-29 | 解双宁 | A kind of recycling processing method of penicillin mushroom dregs |
| CN106986720A (en) * | 2017-03-22 | 2017-07-28 | 湖南永清水务有限公司 | The method for producing soil conditioner using the waste residue for handling livestock breeding wastewater generation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112375693A (en) * | 2020-11-19 | 2021-02-19 | 陕西麦可罗生物科技有限公司 | Method for preparing microbial agent by utilizing natural bioflocculant to pretreat kasugamycin fermentation hyphae |
| CN114833181A (en) * | 2022-06-21 | 2022-08-02 | 内蒙古微技元生态科技有限公司 | Harmless treatment method of antibiotic fermentation fungus residues |
| CN114833181B (en) * | 2022-06-21 | 2024-02-27 | 内蒙古微技元生态科技有限公司 | Innocent treatment method for antibiotic fermentation fungus residues |
| CN114957349A (en) * | 2022-06-30 | 2022-08-30 | 宁夏华吉生物有限公司 | Pretreatment and filtration method of acarbose fermentation liquor |
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