CN107935316A - A kind of method for handling medical waste water - Google Patents

A kind of method for handling medical waste water Download PDF

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Publication number
CN107935316A
CN107935316A CN201711325298.3A CN201711325298A CN107935316A CN 107935316 A CN107935316 A CN 107935316A CN 201711325298 A CN201711325298 A CN 201711325298A CN 107935316 A CN107935316 A CN 107935316A
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China
Prior art keywords
waste water
medical waste
processing
treatment
carried out
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Chinese (zh)
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孙帝
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Sichuan Zhi Chuang Space Incubator Management Co Ltd
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Sichuan Zhi Chuang Space Incubator Management Co Ltd
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Priority to CN201711325298.3A priority Critical patent/CN107935316A/en
Publication of CN107935316A publication Critical patent/CN107935316A/en
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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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • 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
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • 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
    • C02F2101/20—Heavy metals or heavy metal 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
    • C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection

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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)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The invention discloses a kind of method for handling medical waste water, it is related to medical waste water process field.The method of processing medical waste water provided by the invention includes：Medical waste water is collected, is carried out disinfection with chemosterilant to it processing；Primary filter processing is carried out to medical waste water to remove large granular impurity therein；Removing heavy-metal ion processing is carried out to medical waste water；Anaerobic-aerobic processing is carried out to medical waste water；Flocculation sediment processing is carried out to medical waste water；Completely after precipitation, medical waste water qualified discharge, precipitation focuses on after collecting.The method of processing medical waste water provided by the invention carries out exterminating bacterium processing to medical waste water first, kill the pathogenic microorganism in medical waste water, pathogenic microorganism is avoided to be spread with processing procedure, so as to avoid pathogenic microorganism from causing secondary pollution to the medical waste water of later lot, and reduce the risk of pathogenic microorganism diffusion；Chemical mode exterminating bacterium is used in the present invention, the elimination to pathogenic microorganism is efficient, and effect is good.

Description

A kind of method for handling medical waste water
Technical field
The present invention relates to medical waste water processing technology field, especially a kind of method for handling medical waste water.
Background technology
With flourishing for China's medical industry, the yield of medical waste water is also increasing.Medical waste water is mainly The waste water of the discharges such as consulting room, laboratory, ward, laundry and operating room from medical treatment, its wastewater source and component are very multiple It is miscellaneous.Contain substantial amounts of pathogenetic bacteria, virus, chemical agent and heavy metal ion in hospital wastewater, such as medicine, disinfectant, examine Disconnected agent, detergent and substantial amounts of pathogenic microbes, parasitic ovum and various viruses, such as roundworm egg, hepatitis viruse, knot Pyrenomycetes and dysentery bacillus etc..Feature with space-pollution, acute infection and latent infection.With industrial wastewater and sanitary wastewater phase Than it has the characteristics that water is small, pollution power is strong, is such as allowed to discharge, and the serious polluted source of meeting, spreads the disease.
It is now existing much for the processing system and method for medical waste water, its more processing in trade effluent in the art Plus bactericidal unit or process on the basis of system, and common sterilization method is high-temperature sterilization and filtration sterilization.Its Have a drawback in that：（1）Processing procedure is unreasonable；Often pathogenic microorganism is handled in final step, causes cause of disease Microorganism easily retains in device above, causes secondary pollution to the medical waste water of latter batch, and it is micro- to increase cause of disease The risk of biology diffusion.（2）High-temperature sterilization and filtration sterilization can not play well the various bacterial viruses in medical waste water Killing effect, effect are unsatisfactory.
The content of the invention
The goal of the invention of the present invention is：For above-mentioned problem, there is provided a kind of method for handling medical waste water, should Method carries out exterminating bacterium processing to medical waste water first, kills the pathogenic microorganism in medical waste water, avoids pathogenic microorganism Spread with processing procedure, so as to avoid pathogenic microorganism from causing secondary pollution to the medical waste water of later lot, and reduce disease The risk of pathogenic microorganism diffusion；Chemical mode exterminating bacterium is used in the present invention, the elimination to pathogenic microorganism is efficient, effect It is good.
The technical solution adopted by the present invention is as follows：
A kind of method for handling medical waste water, it includes the following steps：
Step 1：Medical waste water is collected, is carried out disinfection with chemosterilant to it processing；
Step 2：Primary filter processing is carried out to medical waste water to remove large granular impurity therein；
Step 3：Removing heavy-metal ion processing is carried out to medical waste water；
Step 4：Anaerobic-aerobic treatment is carried out to medical waste water；
Step 5：Flocculation sediment processing is carried out to medical waste water；Completely after precipitation, medical waste water qualified discharge, after precipitation is collected Centralized processing.
A kind of method of processing medical waste water of the present invention, in step 1, medical waste water, which is disinfected, can use dioxy Change chlorination method, ozone disinfection, any one in potassium hydrogen peroxymonosulfate sterilization；The time disinfected is 4-8h.
By adopting the above-described technical solution, the processing that carries out disinfection first to medical waste water, avoids the disease in medical waste water With processing procedure, the medical waste water of diffusion couple next batch in follow up device causes secondary pollution to pathogenic microorganism, and reduces cause of disease The risk of spreading.Carried out disinfection by the way of chemistry, indigenous microorganisms and its spore, virus, mould, water can be eliminated Algae and biomembrane, Disinfection Effect is good, is particularly suitable for the disinfection of medical waste water part.
A kind of method of processing medical waste water of the present invention, in step 2, removes large granular impurity by the way of grid, The grid gap is 0.05-0.08cm.
By adopting the above-described technical solution, removing large granular impurity, the processing load of subsequent treatment process can be mitigated, And protect processing equipment.
A kind of method of processing medical waste water of the present invention, in step 3, takes off medical waste water using ferrite process Heavy mental treatment, processing time 12-24h；Obtained ferrite is collected separately.
Due to just having used above-mentioned technical proposal, medical waste water is handled with ferrite process, it is useless once to remove medical treatment Various metals ion in water, effluent quality is good, and technique is simple.
A kind of method of processing medical waste water of the present invention, in step 3, medical waste water is adjusted using sodium carbonate liquor PH is 8.0-9.0.
By adopting the above-described technical solution, ferrite needs to be formed under certain pH.Carbon is used in the present invention Sour sodium adjusts pH, on the one hand avoids, because reducing ferritic production rate using calcium hydroxide, on the other hand avoiding because using hydrogen High cost caused by sodium oxide molybdena.
A kind of method of processing medical waste water of the present invention, in the anaerobic-aerobic treatment, Anaerobic Treatment and Aerobic Process for Treatment Separately carry out, first carry out Anaerobic Treatment, then carry out Aerobic Process for Treatment；During anaerobic-aerobic treatment, it is 37-45 DEG C to keep temperature, anaerobism Processing time is 12-24h, and the Aerobic Process for Treatment time is 8-16h.
By adopting the above-described technical solution, in above-mentioned technical proposal, Anaerobic Treatment uses anaerobe such as denitrification Bacterium, Aerobic Process for Treatment uses aerobic microbiological, such as nitrobacteria and polyP bacteria.In Anaerobic Treatment, microorganism is in strictly anaerobic bar Under part, partial organic substances are generated into H by solution2、CO2、H2S and CH4Deng gas.It is aerobic micro- under oxygen existence condition in Aerobic Process for Treatment Biology is mineralized by catabolism, anabolism and material, and oxidation operation is being resolved into CO2And H2O etc..Due to using Above-mentioned technical proposal, the organic matter in medical waste water are broken down into small molecule, can effectively remove C, N, P, S more than needed therein Deng avoiding its eutrophication.
A kind of method of processing medical waste water of the present invention, during Aerobic Process for Treatment, oxygen is passed through with the ventilation ratio of 1-2%vvm.
By adopting the above-described technical solution, Aerobic can be effectively facilitated.
A kind of method of processing medical waste water of the present invention, in step 5, is gathered using amylopectin-Polyacrylamide Grafted Compound carries out flocculation sediment to medical waste water, and the time of flocculation sediment is 12-24h.
A kind of method of processing medical waste water of the present invention, the amylopectin-Polyacrylamide Grafted polymer pass through It is prepared by following steps：
Step A：Amylopectin is dissolved to the solution that 0.1-0.2g/mL is made in water water, according to the matter of cerous nitrate and amylopectin It is 3-4 to measure ratio:50 ratio adds the saturated solution of cerous nitrate into extract solution；400r-600r/min, 45-55 DEG C of bars Heating water bath 5-10min under part；
Step B：Polyacrylamide amine monomers are added into reaction vessel, keep reaction condition the reaction was continued 2-4h；Cooling filters, and takes Precipitation；
Step C：Precipitation is washed through absolute ethyl alcohol, is then dissolved completely in acetone, homopolymer is removed with apparatus,Soxhlet's, after dry Obtain flocculant.
By adopting the above-described technical solution, compared with using simple polyacrylamide as flocculant, chain starch-poly- The particle increase of acrylamide graft polymer flocculants, sinking speed are accelerated.And chain starch-Polyacrylamide Grafted polymerization Thing surface has apparatus derivatorius, can capture multiple suspended particles from different directions, to obtain larger floccule body, promotes its wadding It is solidifying, so as to effectively reduce the suspended matter and COD of medical waste water.
A kind of method of processing medical waste water of the present invention, medical waste water is after precipitation process, then by filter screen filtration After discharge, the aperture of filter screen is 25-50nm.
By adopting the above-described technical solution, the suspended matter not being flocculated by filter screen retention, further improves medical treatment The treatment effect of waste water.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
（1）First carry out disinfection medical waste water processing, avoids the pathogenic microorganism in medical waste water with processing procedure follow-up The medical waste water of diffusion couple next batch causes secondary pollution in device, and reduces the risk of pathogenic microorganism diffusion.
（2）Carried out disinfection by the way of chemistry, indigenous microorganisms and its spore, virus, mould, algae and life can be eliminated Thing film, Disinfection Effect is good, is particularly suitable for the disinfection of medical waste water part.
（3）Flocculated using new flocculant to medical waste water, the particle increase of flocculant, sinking speed is accelerated； Multiple suspended particles can be captured from different directions, to obtain larger floccule body, promote its flocculation, so as to effectively reduce medical treatment The suspended matter and COD of waste water.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Feature and/or step beyond, can combine in any way.
This specification（Including any accessory claim, summary）Disclosed in any feature, unless specifically stated, Replaced by other equivalent or with similar purpose alternative features.I.e., unless specifically stated, each feature is a series of An example in equivalent or similar characteristics.
Embodiment 1
The present embodiment provides a kind of method for handling medical waste water, this method first carries out disinfection medical waste water processing, avoids The medical waste water of the further diffusion couple next batch of pathogenic microorganism causes secondary pollution.Medical waste water provided in this embodiment Processing method include the following steps：
Step 1：Medical waste water is collected, by chlorine dioxide with being 1 according to the volume ratio of medical waste water:The ratio of 20-40 is useless to medical treatment Chlorine dioxide is passed through in water, after stirring, sterilizes 4-8h.
Step 2：Handled filter is treated with grid by the medical waste water disinfected to remove big therein Grain impurity, the gap of grid is 0.05-0.08cm.After primary filter, medical waste water enters removing heavy-metal ion processes, bulky grain Impurity focuses on after collecting.
Step 3：Before removing heavy-metal ion processes are carried out, the pH to 8.0-9.0 of medical waste water is first adjusted, is then added Ferrous sulfate, ferrous sulfate can be somewhat excessively with complete precipitation of heavy metals ions.After adding ferrous sulfate, stir evenly, so Stewing process 12-24h afterwards.After the completion of processing, medical waste water enters anaerobic-aerobic treatment program, and the ferrite precipitation of generation is single Solely collect.
Step 4：Medical waste water after removing heavy-metal ion processes carries out Anaerobic Treatment first, and when Anaerobic Treatment is stringent Anaerobism, anaerobe select anti-bacterial digestion, and Anaerobic Treatment continues 12-24h.Aerobic Process for Treatment is carried out after Anaerobic Treatment, it is aerobic Processing carries out under aerobic conditions, and Aerobic Process for Treatment microorganism selects bacterial digestion, and Aerobic Process for Treatment continues 8-16h.Aerobic Process for Treatment knot Shu Hou, medical waste water enter flocculation sediment program.
Step 5：In flocculation sediment program, flocculation sediment is carried out to the suspended matter in medical waste water using flocculant, with drop Suspended matter in low medical waste water, so as to reduce its COD.Flocculant can use flocculant of the prior art, such as polyacrylamide, The flocculation sediment time is advisable for 8-16h.After flocculation sediment, medical waste water qualified discharge, precipitation collection processing.
Embodiment 2
The present embodiment provides a kind of method for handling medical waste water, this method first carries out disinfection medical waste water processing, avoids The medical waste water of the further diffusion couple next batch of pathogenic microorganism causes secondary pollution.Medical waste water provided in this embodiment Processing method include the following steps：
Step 1：Medical waste water is collected, by ozone with being 1 according to the volume ratio of medical waste water:The ratio of 10-30 is into medical waste water Ozone is passed through, after stirring, sterilizes 4-8h.
Step 2：Handled filter is treated with grid by the medical waste water disinfected to remove big therein Grain impurity, the gap of grid is 0.05-0.08cm.After primary filter, medical waste water enters removing heavy-metal ion processes, bulky grain Impurity focuses on after collecting.
Step 3：Before removing heavy-metal ion processes are carried out, the pH to 8.0-9.0 of medical waste water is first adjusted with sodium carbonate, Then ferrous sulfate is added, ferrous sulfate can be somewhat excessively with complete precipitation of heavy metals ion.After adding ferrous sulfate, stirring Uniformly, then stewing process 12-24h.After the completion of processing, medical waste water enters anaerobic-aerobic treatment program, the ferrite of generation Precipitation is collected separately.
Step 4：Medical waste water after removing heavy-metal ion processes carries out Anaerobic Treatment first, and when Anaerobic Treatment is stringent Anaerobism, anaerobe select anti-bacterial digestion, and Anaerobic Treatment continues 12-24h.Aerobic Process for Treatment is carried out after Anaerobic Treatment, it is aerobic Processing carries out under aerobic conditions, and Aerobic Process for Treatment microorganism selects bacterial digestion, and Aerobic Process for Treatment continues 8-16h, Aerobic Process for Treatment mistake Cheng Zhong, oxygen is passed through with the ventilation ratio of 1-2%vvm.After Aerobic Process for Treatment, medical waste water enters flocculation sediment program.
Step 5：In flocculation sediment program, flocculation sediment is carried out to the suspended matter in medical waste water using flocculant, with drop Suspended matter in low medical waste water, so as to reduce its COD.Flocculant can use flocculant of the prior art, such as polyacrylamide, The flocculation sediment time is advisable for 8-16h.
Step 6：After flocculation sediment, medical waste water passes through filter screen filtration, and the aperture of filter screen is 25-50nm, after filtering Medical waste water qualified discharge, by strainer retention impurity with precipitation collection processing.
Embodiment 3
The present embodiment provides a kind of method for handling medical waste water, this method first carries out disinfection medical waste water processing, avoids The medical waste water of the further diffusion couple next batch of pathogenic microorganism causes secondary pollution.Medical waste water provided in this embodiment Processing method include the following steps：
Step 1：Medical waste water is collected, is 30-60 by potassium hydrogen peroxymonosulfate and the mass volume ratio according to medical waste water:1（g：L） Ratio add potassium hydrogen peroxymonosulfate into medical waste water, after stirring, sterilize 4-8h.
Step 2：Handled filter is treated with grid by the medical waste water disinfected to remove big therein Grain impurity, the gap of grid is 0.05-0.08cm.After primary filter, medical waste water enters removing heavy-metal ion processes, bulky grain Impurity focuses on after collecting.
Step 3：Before removing heavy-metal ion processes are carried out, the pH to 8.0-9.0 of medical waste water is first adjusted with sodium carbonate, Then ferrous sulfate is added, ferrous sulfate can be somewhat excessively with complete precipitation of heavy metals ion.After adding ferrous sulfate, stirring Uniformly, then stewing process 12-24h.After the completion of processing, medical waste water enters anaerobic-aerobic treatment program, the ferrite of generation Precipitation is collected separately.
Step 4：Medical waste water after removing heavy-metal ion processes carries out Anaerobic Treatment first, and when Anaerobic Treatment is stringent Anaerobism, anaerobe select anti-bacterial digestion, and Anaerobic Treatment continues 12-24h.Aerobic Process for Treatment is carried out after Anaerobic Treatment, it is aerobic Processing carries out under aerobic conditions, and Aerobic Process for Treatment microorganism selects bacterial digestion, and Aerobic Process for Treatment continues 8-16h, Aerobic Process for Treatment mistake Cheng Zhong, oxygen is passed through with the ventilation ratio of 1-2%vvm.After Aerobic Process for Treatment, medical waste water enters flocculation sediment program.
Step 5：In flocculation sediment program, flocculation sediment is carried out to the suspended matter in medical waste water using flocculant, with drop Suspended matter in low medical waste water, so as to reduce its COD.Flocculant uses amylopectin-Polyacrylamide Grafted polymer, flocculation Sedimentation time is advisable for 8-16h.
Step 6：After flocculation sediment, medical waste water passes through filter screen filtration, and the aperture of filter screen is 25-50nm, after filtering Medical waste water qualified discharge, by strainer retention impurity with precipitation collection processing.
The present embodiment provides a kind of new sewage flocculant, i.e., flocculant used in embodiment 3.The flocculant is branch Chain starch-Polyacrylamide Grafted polymer, the flocculant particle is big, and sinking speed is fast, has branch, can be from different directions Multiple suspended particles are caught, to obtain larger floccule body, so as to effectively reduce the COD of medical waste water.The sewage flocculant leads to Following steps are crossed to be prepared：
Step 1：Amylopectin is dispersed in water to the amylopectin solution to form 0.1-0.2g/mL.According to cerous nitrate and side chain The mass ratio of starch is 3-4:50 ratio weighs cerous nitrate, and is dissolved in the water and to form saturated solution, to amylopectin solution The middle saturated solution for adding cerous nitrate；Heating water bath 5-10min under the conditions of 400-600r/min, 45-55 DEG C.
Step 2：It is 2 according to the mass ratio of acrylamide and amylopectin:3-5 weighs acrylamide, and is scattered in In water, dissolve by heating, at the uniform velocity added while hot with the speed of 1-2mL/min in amylopectin solution, keep reaction condition to continue anti- Answer 2-4h.
Step 3：After question response liquid is cooled to room temperature, suction filtration takes filter residue.Filter residue is washed twice through absolute ethyl alcohol, is used every time Amount is substantially identical with filter residue volume, after ethanol volatilization, is dissolved completely in acetone, and homopolymerization is removed with apparatus,Soxhlet's Thing, flocculant is obtained after dry at 50-70 DEG C.
The invention is not limited in foregoing embodiment.The present invention, which expands to, any in the present specification to be disclosed New feature or any new combination, and disclose any new method or process the step of or any new combination.

Claims (10)

  1. A kind of 1. method for handling medical waste water, it is characterised in that it includes the following steps：
    Step 1：Medical waste water is collected, is carried out disinfection with chemosterilant to it processing；
    Step 2：Primary filter processing is carried out to medical waste water to remove large granular impurity therein；
    Step 3：Removing heavy-metal ion processing is carried out to medical waste water；
    Step 4：Anaerobic-aerobic treatment is carried out to medical waste water；
    Step 5：Flocculation sediment processing is carried out to medical waste water；Completely after precipitation, medical waste water qualified discharge, after precipitation is collected Centralized processing.
  2. 2. the method for processing medical waste water according to claim 1, it is characterised in that in step 1, disappear to medical waste water Poison, which is handled, can use disinfection by chlorine dioxide method, ozone disinfection, any one in potassium hydrogen peroxymonosulfate sterilization；Disinfect Time be 4-8h.
  3. 3. the method for processing medical waste water according to claim 1, it is characterised in that in step 2, using the side of grid Formula removes large granular impurity, and the grid gap is 0.05-0.08cm.
  4. 4. the method for processing medical waste water according to claim 1, it is characterised in that in step 3, using ferrite process Removing heavy-metal ion processing, processing time 12-24h are carried out to medical waste water；Obtained ferrite is collected separately.
  5. 5. the method for processing medical waste water according to claim 4, it is characterised in that molten using sodium carbonate in step 3 The pH that liquid adjusts medical waste water is 8.0-9.0.
  6. 6. the method for processing medical waste water according to claim 1, it is characterised in that in the anaerobic-aerobic treatment, detest Oxygen processing and Aerobic Process for Treatment separately carry out, and first carry out Anaerobic Treatment, then carry out Aerobic Process for Treatment；During anaerobic-aerobic treatment, temperature is kept Spend for 37-45 DEG C, the Anaerobic Treatment time is 12-24h, and the Aerobic Process for Treatment time is 8-16h.
  7. 7. the method for processing medical waste water according to claim 6, it is characterised in that during Aerobic Process for Treatment, with 1-2%vvm's Ventilation ratio is passed through oxygen.
  8. 8. it is according to claim 1 processing medical waste water method, it is characterised in that in step 5, using amylopectin- Polyacrylamide Grafted polymer carries out flocculation sediment to medical waste water, and the time of flocculation sediment is 12-24h.
  9. 9. the method for processing medical waste water according to claim 8, it is characterised in that the amylopectin-polyacrylamide Amine graft polymers is made by the steps：
    Step A：Amylopectin is dissolved to the solution that 0.1-0.2g/mL is made in water water, according to the matter of cerous nitrate and amylopectin It is 3-4 to measure ratio:50 ratio adds the saturated solution of cerous nitrate into extract solution；400r-600r/min, 45-55 DEG C of bars Heating water bath 5-10min under part；
    Step B：Polyacrylamide amine monomers are added into reaction vessel, keep reaction condition the reaction was continued 2-4h；Cooling filters, and takes Precipitation；
    Step C：Precipitation is washed through absolute ethyl alcohol, is then dissolved completely in acetone, homopolymer is removed with apparatus,Soxhlet's, after dry Obtain flocculant.
  10. 10. it is according to claim 9 processing medical waste water method, it is characterised in that medical waste water after precipitation process, Discharged again after filter screen filtration, the aperture of filter screen is 25-50nm.
CN201711325298.3A 2017-12-13 2017-12-13 A kind of method for handling medical waste water Withdrawn CN107935316A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201711325298.3A CN107935316A (en) 2017-12-13 2017-12-13 A kind of method for handling medical waste water

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113024014A (en) * 2021-01-29 2021-06-25 云南和泽环保科技有限公司 Hospital sewage treatment method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113024014A (en) * 2021-01-29 2021-06-25 云南和泽环保科技有限公司 Hospital sewage treatment method

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