CN113003855A - Treatment method of traditional Chinese medicine extraction wastewater - Google Patents

Treatment method of traditional Chinese medicine extraction wastewater Download PDF

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Publication number
CN113003855A
CN113003855A CN202110120615.8A CN202110120615A CN113003855A CN 113003855 A CN113003855 A CN 113003855A CN 202110120615 A CN202110120615 A CN 202110120615A CN 113003855 A CN113003855 A CN 113003855A
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wastewater
treatment
chinese medicine
traditional chinese
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孟应斗
吴钢
冯建军
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Yunnan Heze Environmental Protection Technology Co ltd
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Yunnan Heze Environmental Protection Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/343Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/348Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a treatment method of traditional Chinese medicine extraction wastewater, which comprises the following steps: s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process into a sedimentation tank, and naturally settling for 8-16 hours; s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment tank, microorganisms are added into the wastewater, and the wastewater is stirred for 12-24 hours at a stirring speed of 50-150 r/min; s3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept at 135-250 mg/m3The reaction is carried out for a while; s4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 1-3 hours, and standing is carried out for 5-10 hours; s5, discharging: the water treated in step S5 is discharged directly. The invention improves CODcrBOD and NH3-removal rate of N.

Description

Treatment method of traditional Chinese medicine extraction wastewater
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a treatment method of traditional Chinese medicine extraction wastewater.
Background
The main components in the Chinese medicine production wastewater comprise saccharides, ethanol, glycosides, anthraquinone, lignin, alkaloids, tannins, proteins, pigments and other substances, the water quality and the water amount of the wastewater fluctuate greatly along with the intermittency of the Chinese medicine production operation and the diversity of product types, and the Chinese medicine production wastewater is one of the wastewater which is difficult to treat compared with other industrial wastewater. Treatment of traditional Chinese medicine wastewaterThe treatment method and the treatment process are still in a further research stage. The existing traditional Chinese medicine extraction wastewater treatment process is complex, and COD in the wastewatercrBOD and NH3The removal rate of-N is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for treating Chinese medicine extraction wastewater, which is used for improving COD (chemical oxygen demand) in the Chinese medicine extraction wastewatercrBOD and NH3-removal rate of N.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a treatment method of traditional Chinese medicine extraction wastewater comprises the following steps:
s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process into a sedimentation tank, and naturally settling for 8-16 hours;
s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment tank, microorganisms are added into the wastewater, and the wastewater is stirred for 12-24 hours at a stirring speed of 50-150 r/min;
s3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept at 135-250 mg/m3﹒h;
S4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 1-3 hours, and standing is carried out for 5-10 hours;
s5, discharging: the water treated in step S5 is discharged directly.
In the method for treating the traditional Chinese medicine extraction wastewater provided by the invention, preferably, the microorganism is one or more of aspergillus pyrosus, citrobacter freundii, nitrobacter alkalophilus, bacillus subtilis, rhizopus nigricans, ester-producing yeast, mucor racemosus, mucor rouxii and actinomycetes.
In the method for treating the traditional Chinese medicine extraction wastewater provided by the invention, preferably, the microorganism is aspergillus pyrosus, citrobacter freundii, bacillus subtilis, rhizopus nigricans, mucor racemosus and actinomycetes.
In the method for treating the traditional Chinese medicine extraction wastewater, the microorganisms are preferably aspergillus pyrosus, citrobacter freundii, bacillus subtilis, rhizopus nigricans, mucor racemosus and actinomycetes in a weight ratio of 0.5-2: 3-5: 1-5: 2-7: 0.5-1: 1-3.
In the method for treating the traditional Chinese medicine extraction wastewater provided by the invention, the weight ratio of the microorganisms including aspergillus pyrosus, citrobacter freundii, bacillus subtilis, rhizopus nigricans, mucor racemosus and actinomycetes is preferably 0.5:4:3:5:0.8: 2.
In the method for treating the traditional Chinese medicine extraction wastewater provided by the invention, preferably, the flocculant is one or more of ethylenediamine tetraacetic acid, disodium ethylenediamine tetraacetic acid, potassium permanganate, tannin, polyaluminium chloride and polyferric sulfate.
In the method for treating the traditional Chinese medicine extraction wastewater provided by the invention, preferably, the flocculant is ethylenediamine tetraacetic acid, tannin, polyaluminium chloride and polyferric sulfate.
In the treatment method of the traditional Chinese medicine extraction wastewater provided by the invention, the weight ratio of the ethylenediamine tetraacetic acid to the tannin to the polyaluminium chloride to the polyferric sulfate is preferably 5-8: 3-7: 1-3.
In the method for treating the traditional Chinese medicine extraction wastewater provided by the invention, the weight ratio of the ethylenediamine tetraacetic acid to the tannin to the polyaluminium chloride to the polyferric sulfate is preferably 6:5:2: 1.
By adopting the technical scheme, in the method for treating the traditional Chinese medicine extraction wastewater, firstly, impurities which are easy to naturally precipitate in the wastewater are removed by using precipitation treatment, then, microorganisms are used for decomposing and removing organic matters in the wastewater, then, the microorganisms are used for killing and removing residual organic matters by adopting ozone, and finally, inorganic matters in the water are flocculated by using a flocculating agent. The invention effectively improves the sewage treatment effect and reduces CODcrBOD and NH3-the content of N. In the invention, aspergillus pyrosus, bacillus subtilis and actinomycetes are used for improving COD in traditional Chinese medicine extraction wastewatercrBOD and NH3The removal rate of-N has a synergistic effect.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides a treatment method of traditional Chinese medicine extraction wastewater, which comprises the following steps:
s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process into a sedimentation tank, and naturally settling for 8 hours;
s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment pool, microorganisms are added into the wastewater, and the wastewater is stirred for 24 hours at a stirring speed of 50 r/min;
the microorganism is aspergillus pyrotechnical, citrobacter freundii, nitrobacter alkalophilus, bacillus subtilis, rhizopus nigricans, ester-producing yeast, mucor racemosus, mucor rouxii and actinomycetes, and the weight ratio of the aspergillus pyrotechnical to the citrobacter freundii to the nitrobacter alkalophilus to the actinomycetes is 3:1:4: 5:1:3:0.5: 1.
S3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept to be 250mg/m3﹒h;
S4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 1 hour, and standing is carried out for 5 hours;
the flocculating agent is ethylene diamine tetraacetic acid, disodium ethylene diamine tetraacetate, potassium permanganate, tannin, polyaluminium chloride and polyferric sulfate, and the weight ratio of the flocculating agent to the flocculating agent is 2:1:0.5:1:1: 2;
s5, discharging: the water treated in step S5 is discharged directly.
Example 2
The embodiment provides a treatment method of traditional Chinese medicine extraction wastewater, which comprises the following steps:
s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process into a sedimentation tank, and naturally settling for 16 hours;
s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment pool, microorganisms are added into the wastewater, and the wastewater is stirred for 12 hours at a stirring speed of 150 r/min;
the microorganism is aspergillus pyrosus, citrobacter freundii, bacillus subtilis, rhizopus nigricans, mucor racemosus and actinomycetes, and the weight ratio of the aspergillus pyrosus to the citrobacter freundii to the bacillus subtilis to the rhizopus nigricans to the actinomycetes is 0.5:5:1:7:0.5: 3.
S3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept at 135mg/m3﹒h;
S4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 3 hours, and standing is carried out for 10 hours;
the flocculating agent is ethylenediamine tetraacetic acid, potassium permanganate, tannin, polyaluminium chloride and polyferric sulfate, and the weight ratio of the flocculating agent to the polyferric sulfate is 2:0.5:2:1: 2;
s5, discharging: the water treated in step S5 is discharged directly.
Example 3
The embodiment provides a treatment method of traditional Chinese medicine extraction wastewater, which comprises the following steps:
s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process into a sedimentation tank, and naturally settling for 10 hours;
s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment pool, microorganisms are added into the wastewater, and the wastewater is stirred for 16 hours at a stirring speed of 80 r/min;
the microorganism is Aspergillus pyroxylum, Citrobacter freundii, Bacillus subtilis, Rhizopus nigricans, Mucor racemosus and actinomycetes, and the weight ratio of the microorganism to the actinomycetes is 0.5:4:3:5:0.8: 2.
S3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept at 160mg/m3﹒h;
S4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 2 hours, and standing is carried out for 8 hours;
the flocculating agent is ethylenediamine tetraacetic acid, tannin, polyaluminium chloride and polyferric sulfate, and the weight ratio of the flocculating agent to the polyferric sulfate is 6:5:2: 1.
S5, discharging: the water treated in step S5 is discharged directly.
Example 4
The embodiment provides a treatment method of traditional Chinese medicine extraction wastewater, which comprises the following steps:
s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process into a sedimentation tank, and naturally settling for 13 hours;
s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment pool, microorganisms are added into the wastewater, and the wastewater is stirred for 18 hours at a stirring speed of 60 r/min;
the microorganisms added into the wastewater are aspergillus pyrosus, bacillus subtilis, mucor racemosus, mucor rouxii and actinomycetes in a weight ratio of 1:3:2:1: 0.5.
S3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept at 230mg/m3﹒h;
S4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 3 hours, and standing is carried out for 6 hours;
the flocculating agent is ethylenediamine tetraacetic acid, potassium permanganate, tannin, polyaluminium chloride and polyferric sulfate in a weight ratio of 2:3:2:1: 2;
s5, discharging: the water treated in step S5 is discharged directly.
Example 5
The embodiment provides a treatment method of traditional Chinese medicine extraction wastewater, which comprises the following steps:
s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process into a sedimentation tank, and naturally settling for 10 hours;
s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment pool, microorganisms are added into the wastewater, and the wastewater is stirred for 16 hours at a stirring speed of 110 r/min;
the microorganism is aspergillus pyrosus, citrobacter freundii, bacillus subtilis, rhizopus nigricans, mucor racemosus and actinomycetes, and the weight ratio of the aspergillus pyrosus to the citrobacter freundii to the bacillus subtilis to the rhizopus nigricans is 2:5:1:7:1: 1.
S3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept at 190mg/m3﹒h;
S4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 2 hours, and standing is carried out for 9 hours;
the flocculating agent is ethylenediamine tetraacetic acid, tannin, polyaluminium chloride and polyferric sulfate, and the weight ratio of the flocculating agent to the polyferric sulfate is 8:3:1: 3.
S5, discharging: the water treated in step S5 is discharged directly.
Example 6
The embodiment provides a treatment method of traditional Chinese medicine extraction wastewater, which comprises the following steps:
s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process into a sedimentation tank, and naturally settling for 15 hours;
s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment pool, microorganisms are added into the wastewater, and the wastewater is stirred for 20 hours at a stirring speed of 130 r/min;
the microorganism is Citrobacter freundii, Bacillus subtilis, Rhizopus nigricans, Mucor racemosus and actinomycetes, and the weight ratio of the Citrobacter freundii to the Bacillus subtilis is 4:3:5:0.8: 2.
S3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept at 180mg/m3﹒h;
S4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 2 hours, and standing is carried out for 7 hours;
the flocculating agent is ethylenediamine tetraacetic acid, tannin, polyaluminium chloride and polyferric sulfate, and the weight ratio of the flocculating agent to the polyferric sulfate is 7:3:2: 1.
S5, discharging: the water treated in step S5 is discharged directly.
Example 7
The embodiment provides a treatment method of traditional Chinese medicine extraction wastewater, which comprises the following steps:
s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process to a sedimentation tank, and naturally settling for 9 hours;
s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment pool, microorganisms are added into the wastewater, and the wastewater is stirred for 21 hours at a stirring speed of 120 r/min;
the microorganism is Aspergillus pyroxylum, Citrobacter freundii, Bacillus subtilis, Rhizopus nigricans, Mucor racemosus and actinomycetes, and the weight ratio of the microorganism to the microorganism is 0.5:4:5:0.8: 2.
S3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept to be 210mg/m3﹒h;
S4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 1 hour, and standing is carried out for 9 hours;
the flocculating agent is ethylenediamine tetraacetic acid, tannin, polyaluminium chloride and polyferric sulfate, and the weight ratio of the flocculating agent to the polyferric sulfate is 8:3:1: 3.
S5, discharging: the water treated in step S5 is discharged directly.
Example 8
The embodiment provides a treatment method of traditional Chinese medicine extraction wastewater, which comprises the following steps:
s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process into a sedimentation tank, and naturally settling for 8 hours;
s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment pool, microorganisms are added into the wastewater, and the wastewater is stirred for 13 hours at a stirring speed of 100 r/min;
the microorganism is Aspergillus pyroxylum, Citrobacter freundii, Bacillus subtilis, Rhizopus nigricans and Mucor racemosus, and the weight ratio of the microorganism is 0.5:4:3:5: 0.8.
S3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept at 240mg/m3﹒h;
S4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 2 hours, and standing is carried out for 9 hours;
the weight ratio of the ethylenediamine tetraacetic acid to the tannin to the polyaluminium chloride to the polyferric sulfate is 6:7:2: 3.
S5, discharging: the water treated in step S5 is discharged directly.
Test examples
In order to verify the beneficial technical effects of the invention, the traditional Chinese medicine extraction wastewater is treated according to the above embodiments, and then the quality of the treated water is detected, and the results are shown in table 1.
TABLE 1 Water quality results (mg/L) of Chinese medicine extraction wastewater treated according to each example
Figure BDA0002922199150000091
Figure BDA0002922199150000101
As can be seen from the above table, COD in the wastewater from the extraction of Chinese herbs treated by the methods of examples 1 to 5crBOD and NH3The content of-N is significantly lower than that of the wastewater from the extraction of Chinese herbs treated by the method of examples 6 to 8. In example 6 the microorganism lacks Aspergillus oryzae, in example 7 the microorganism lacks Bacillus subtilis, and in example 8 the microorganism lacks Actinomycetes, whereby it can be seen that Aspergillus oryzae, Bacillus subtilis and Actinomycetes are responsible for increasing COD in wastewater from extraction of Chinese medicinal materialscrBOD and NH3The removal rate of-N has a synergistic effect.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims (9)

1. A treatment method of traditional Chinese medicine extraction wastewater is characterized by comprising the following steps:
s1, precipitation treatment: collecting the wastewater generated in the traditional Chinese medicine extraction process into a sedimentation tank, and naturally settling for 8-16 hours;
s2, microbial treatment: the wastewater treated in the step S1 enters a microorganism treatment tank, microorganisms are added into the wastewater, and the wastewater is stirred for 12-24 hours at a stirring speed of 50-150 r/min;
s3, ozone oxidation: the wastewater treated in the step S2 enters an ozone oxidation pond, ozone is introduced for oxidation treatment, and the introduction amount of the ozone in the wastewater is kept at 135-250 mg/m3﹒h;
S4, flocculation treatment: the wastewater treated in the step S3 enters a flocculation tank, a flocculating agent is added, stirring treatment is carried out for 1-3 hours, and standing is carried out for 5-10 hours;
s5, discharging: the water treated in step S5 is discharged directly.
2. The method for treating wastewater from extraction of traditional Chinese medicine as claimed in claim 1, wherein the microorganism is one or more of Aspergillus pyrotechnical, Citrobacter freundii, Nitrobacter alkalophilus, Bacillus subtilis, Rhizopus nigricans, ester-producing yeast, Mucor racemosus, Mucor rouxii, and Actinomyces.
3. The method for treating wastewater from extraction of traditional Chinese medicine as claimed in claim 2, wherein the microorganism is Aspergillus pyrosus, Citrobacter freundii, Bacillus subtilis, Rhizopus nigricans, Mucor racemosus and Actinomyces.
4. The method for treating traditional Chinese medicine extraction wastewater according to claim 3, wherein the microorganism is Aspergillus pyro & lt, Citrobacter freundii, Bacillus subtilis, Rhizopus nigricans, Mucor racemosus and Actinomyces in a weight ratio of 0.5-2: 3-5: 1-5: 2-7: 0.5-1: 1-3.
5. The method for treating wastewater from traditional Chinese medicine extraction according to claim 4, wherein the weight ratio of the microorganisms selected from Aspergillus scorching, Citrobacter freundii, Bacillus subtilis, Rhizopus nigricans, Mucor racemosus and Actinomyces is 0.5:4:3:5:0.8: 2.
6. The method for treating wastewater from traditional Chinese medicine extraction of claim 1, wherein the flocculating agent is one or more of ethylenediaminetetraacetic acid, disodium ethylenediaminetetraacetate, potassium permanganate, tannin, polyaluminium chloride and polyferric sulfate.
7. The method for treating wastewater from extraction of traditional Chinese medicine as claimed in claim 6, wherein the flocculating agent is EDTA, tannin, polyaluminium chloride and polyferric sulfate.
8. The method for treating wastewater from traditional Chinese medicine extraction of claim 7, wherein the weight ratio of the ethylenediamine tetraacetic acid to the tannin to the polyaluminium chloride to the polyferric sulfate is 5-8: 3-7: 1-3.
9. The method for treating wastewater from traditional Chinese medicine extraction of claim 8, wherein the weight ratio of ethylenediamine tetraacetic acid, tannin, polyaluminium chloride and polyferric sulfate is 6:5:2: 1.
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Application publication date: 20210622