CN108059308A - A kind of clindamycin wastewater preprocessing process - Google Patents

A kind of clindamycin wastewater preprocessing process Download PDF

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Publication number
CN108059308A
CN108059308A CN201711460314.XA CN201711460314A CN108059308A CN 108059308 A CN108059308 A CN 108059308A CN 201711460314 A CN201711460314 A CN 201711460314A CN 108059308 A CN108059308 A CN 108059308A
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Prior art keywords
clindamycin
waste water
preprocessing process
dosage
process according
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CN201711460314.XA
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Chinese (zh)
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CN108059308B (en
Inventor
买文宁
牛颖
周娅
李伟利
唐启
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Zhengzhou University
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Zhengzhou University
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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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/12—Halogens or halogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/343—Nature 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids

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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)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention discloses a kind of clindamycin wastewater preprocessing process, step is as follows：（1）Clindamycin waste water enters high-efficient shallow air flotation device, and suspended matter therein is removed through agent-feeding treatment；（2）Sewage after air-flotation process enters new sludge reduction multi stage decompression system（Modified Contact Oxidation Process）, carrying out biochemical treatment reduces organic concentration in waste water；（3）The further advanced treating of water outlet after biochemical treatment, using the method for Fenton oxidation after first coagulation so that treated, and water outlet COD is down to 50 below mg/L.Organic matter after this process in waste water substantially reduces, and multiple-effect evaporation can be avoided to extract salt timesharing, and organic matter is fixedly arranged at salinity surface and forms colloid substance；The difficulty of extraction salinity is reduced, salinity purity is improved, is conducive to recycle.

Description

A kind of clindamycin wastewater preprocessing process
Technical field
The invention belongs to environmental technology fields, and in particular to a kind of clindamycin wastewater preprocessing process.
Background technology
Clindamycin is a kind of antibiotic that Lincomycin Hydrochloride is chemically synthesized, and clindamycin waste water belongs to antibiotic Class waste water is generated by the laggard one-step synthesis of microbial fermentation.It is generated during chemical synthesis containing sodium chloride, sodium phosphate High-salt wastewater, main component NaCl, Na3PO4Deng, and COD concentration is higher in waste water.
The technique of domestic processing clindamycin waste water is mainly multiple-effect evaporation and biochemistry combination process at present, is to handle at present It the characteristics of proper method of organic wastewater with difficult degradation thereby with high salt, multiple-effect evaporation is reduced with pressure using the boiling point of water and reduced, will be useless Salinity in water is separated, and then the organic matter in waste water is efficiently removed by biochemical method.But multiple-effect evaporation method is dense The solid salinity obtained after contracting can not be comprehensively utilized due to containing large amount of organic, form dangerous solid waste.
The content of the invention
For problems of the prior art, the present invention provides the pretreatment before a kind of clindamycin waste water is concentrated by evaporation Technique, the organic matter after this process in waste water substantially reduce, and multiple-effect evaporation can be avoided to extract salt timesharing, organic matter consolidation Colloid substance is formed on salinity surface；The difficulty of extraction salinity is reduced, salinity purity is improved, is conducive to recycle；Flow letter Single, operating cost is low, and management is convenient.
The technical solution adopted by the present invention to solve the technical problems is：
（1）Air-flotation process：Clindamycin waste water enters high-efficient shallow air flotation device, by controlling dosage, removes therein outstanding Float is without causing phosphate to form precipitation；Added drug is aluminium polychloride and polyacrylamide；The dosing of aluminium polychloride It measures as 0.2-0.5 g/L, polyacrylamide uses cationic, and dosage is 2.0-5.0 mg/L；In such dosage item Under part, suspended matter all removes, and phosphate not yet generates precipitation with the reactive aluminum in aluminium polychloride；
High-efficient shallow air flotation integrates cohesion, air supporting, skimming, precipitates, scrapes mud, is used on the basis of traditional air supporting theory " shallow pool theory " and " zero-speed " principle is designed, and floor space is smaller, processing capacity is strong, and treatment effeciency is high, and it is shallow to surpass effect Layer air supporting can effectively remove COD and suspended material in waste water；
（2）Biochemical treatment：Sewage after air-flotation process enters MCOP（Modified Contact Oxidation Process） System carries out biochemical treatment under high salt conditions, and the organic concentration in sewage is greatly reduced, hydrophobicity is added in MCOP systems Filler, the additive amount of filler is 2-4 kg/m3, MCOP systems are multi-stage aerobic aeration system, can form complete biological chain, make Microorganism realizes degradation to organic matter under high salt conditions.
MCOP systems are multi-stage aerobic aeration system, and waste water fluidised form is pulling flow type, and hydraulic detention time is 3-4 d, MCOP System adds in bio-carrier, and bio-carrier uses hydrophobicity flexible filler made of nylon 6, not easily to fall off, will not cause equipment Blocking and damage, the big aeration in aperture is good, and filling rate is high, does not block wall structure, increases specific surface area, is easy to microorganism Attachment；The microorganism in each aerating system is caused orderly to develop by the way of multi-stage aeration, it is complete raw to be formed Object chain due to adding for filler, has higher sludge concentration in system, since sludge age is longer, sludge yield is low, dirty Mud is reduced 50%-60%.
（3）Advanced treating：Water outlet after biochemical treatment carries out advanced treating, is aoxidized using Fenten after first coagulating sedimentation Method；Coagulated agent uses bodied ferric sulfate and polypropylene milling amine, and the dosage of bodied ferric sulfate is 0.2-0.6 g/L, and poly- third Acrylamide uses cationic, dosage 0.5-1.0mg/L；The dosage of Fenton oxidation is：FeSO4·7H20 is 0.6- 1.0 g/L；H2O2（Mass fraction is 30%）For 1.4-2.0 mL/L, polyacrylamide uses cationic, dosage 1.0- 1.2 mg/L, the organic matter of difficult for biological degradation is aoxidized in waste water so that treated, and water outlet COD is down to 50 below mg/L, has Multiple-effect evaporation processing is carried out beneficial to follow-up waste water.
Beneficial effects of the present invention：Pretreating process before the clindamycin waste water evaporation and concentration of the present invention, can make micro- Biology still maintains certain activity under high salt conditions, has higher organic removal rate；Can substantially reduce in waste water has Machine object content so that organic object is practically free of in the salt-mixture that multiple-effect evaporation technique is extracted, the separation for being conducive to salt-mixture carries It is pure；Meanwhile this technological process is simple, operating cost is low, and management is convenient.Pretreatment of the present invention as multiple-effect evaporation technique, energy Enough remove the organic matter in waste water so that organic object is practically free of in the salt-mixture that multiple-effect evaporation technique is extracted, is conducive to mix Close the separating-purifying of salt.
Description of the drawings
Fig. 1 is the attached clindamycin wastewater preprocessing process flow chart of the present invention.
Specific embodiment
With reference to specific embodiment, the present invention will be further described.It is to be understood that following embodiment is merely to illustrate this The scope of invention and is not intended to limit the present invention, the person skilled in the art in the field can make one according to the content of foregoing invention A little nonessential modifications and adaptations.
A kind of clindamycin wastewater preprocessing process of 1 couple of present invention makees following detailed description of referring to the drawings.
Pending clindamycin waste water quality is as follows：COD 12000mg/L, salinity 4.5%, TP 2000 mg/L, TN 300 mg/L of 800 mg/L, SS.
Clindamycin waste water is pre-processed by following steps：
（1）Clindamycin waste water enters high-efficient shallow air flotation device, and aluminium polychloride is added in flotation tank（PAC）With a small amount of poly- third Acrylamide（PAM）, remove suspended material therein, the dosage of aluminium polychloride is 0.3 g/L, polyacrylamide using sun from Subtype, dosage are 2.5 mg/L, and after processing, 85 mg/L of water outlet SS, removal rate is up to 71.7%；
（2）Waste water after air-flotation process enters MCOP systems and carries out biological treatment, and microorganism is greatly reduced under high salt conditions Organic concentration in waste water, after the processing of MOCP systems, COD is down to 900mg/L, removal rate 92%；
（3）By the further advanced treating of water outlet after biochemical treatment, using the method for Fenton oxidation after first coagulating sedimentation；Coagulation Medicament uses bodied ferric sulfate and polyacrylamide, and the dosage of bodied ferric sulfate is 0.4 g/L, polyacrylamide using sun from Subtype, dosage are 0.3 mg/L, and coagulation water outlet COD is 400mg/L, and removal rate is up to 55%；The dosage of Fenton oxidation is： FeSO4·7H20 is 0.8 g/L；H2O2（Mass fraction 30%）For 1.6 mL/L, polyacrylamide uses cationic, dosage For 1 mg/L；Fenton oxidation water outlet COD is conducive to follow-up waste water and carries out multiple-effect evaporation processing in below 50mg/L.
It is enterprise's long term monitoring data below：
Enterprise for a long time detection statistics indicate that, using the method for the present invention, organic removal rate can reach 99%, and the removal rate of total phosphorus is only For 10%, most phosphate is remained while organics removal, which can be in follow-up multiple-effect evaporation technique It is extracted, realizes the maximization of the utilization of resources.
Illustrative embodiments listed above are only for understanding that the present invention is used, not to technical solution described in the invention It limits, the general technical staff in relation to field on the basis of technical solution described in claim, can also make a variety of variations Or deformation, all equivalent variations or deformation should all be covered within the protective scope of the claims of the present invention.The present invention is not Part is described in detail, is the known technology of those skilled in the art of the present technique.

Claims (8)

1. a kind of clindamycin wastewater preprocessing process, it is characterised in that step is as follows：
（1）Air-flotation process：Clindamycin waste water enters high-efficient shallow air flotation device, through agent-feeding treatment, removes suspended matter therein；
（2）Biochemical treatment：Sewage after air-flotation process enters MCOP systems, and biochemical treatment is carried out under high salt conditions；
（3）Advanced treating：Water outlet after biochemical treatment carries out advanced treating, the side aoxidized using Fenten after first coagulating sedimentation Method so that treated, and water outlet COD is down to 50 below mg/L, is conducive to follow-up waste water and carries out multiple-effect evaporation processing.
2. clindamycin wastewater preprocessing process according to claim 1, it is characterised in that：The step（1）Using super Imitate the suspended matter in shallow air-floatation device removal waste water, added drug is aluminium polychloride and polyacrylamide, the polypropylene Amide uses cationic-type polyacrylamide.
3. clindamycin wastewater preprocessing process according to claim 2, it is characterised in that：The aluminium polychloride adds Dose is 0.2-0.5 g/L, and the dosage of cationic-type polyacrylamide is 2.0-5.0mg/L.
4. clindamycin wastewater preprocessing process according to claim 1, it is characterised in that：The step（2）MCOP systems The hydrophobic filler added in system, the additive amount of hydrophobic filler is 2-4 kg/m3。
5. clindamycin wastewater preprocessing process according to claim 4, it is characterised in that：The hydrophobic filler uses Nylon 6 is made.
6. clindamycin wastewater preprocessing process according to claim 1, it is characterised in that：The step（2）Using MCOP systems are multi-stage aerobic aeration system, can form complete biological chain, retention time of sewage 3-4d so that microorganism exists The degradation to organic matter is realized under high salt conditions.
7. clindamycin wastewater preprocessing process according to claim 1, it is characterised in that：The step（3）Coagulation sinks Coagulated agent during shallow lake uses bodied ferric sulfate and cationic polypropylene milling amine, wherein, the dosage of bodied ferric sulfate is 0.2-0.6 g/L, the dosage of cationic-type polyacrylamide is 0.5-1.0mg/L.
8. clindamycin wastewater preprocessing process according to claim 1, it is characterised in that：The step（3）Fenton FeSO during oxidation4·7H20 dosage is 0.6-1.0 g/L, and mass fraction is 30% H2O2Dosage be 1.4-2.0 ML/L, the dosage of cationic-type polyacrylamide is 1.0-1.2 mg/L.
CN201711460314.XA 2017-12-28 2017-12-28 Chloramphenicol wastewater pretreatment process Active CN108059308B (en)

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CN109534477B (en) * 2018-11-30 2021-11-19 华南师范大学 Method for degrading lincomycin

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