CN211644968U - Medical wastewater comprehensive treatment system - Google Patents
Medical wastewater comprehensive treatment system Download PDFInfo
- Publication number
- CN211644968U CN211644968U CN201922207925.4U CN201922207925U CN211644968U CN 211644968 U CN211644968 U CN 211644968U CN 201922207925 U CN201922207925 U CN 201922207925U CN 211644968 U CN211644968 U CN 211644968U
- Authority
- CN
- China
- Prior art keywords
- tank
- sludge
- mbr
- hydrolysis acidification
- regulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a medical wastewater comprehensive treatment system, which comprises a grid tank, a first regulating tank connected with the grid tank, a chemical reaction tank connected with the first regulating tank, a sedimentation tank connected with the chemical reaction tank, a septic tank, a second regulating tank respectively connected with the septic tank and the sedimentation tank, a hydrolysis acidification tank connected with the second regulating tank, an MBR tank connected with the hydrolysis acidification tank, and a clear water tank with an ultrafiltration device connected with the MBR tank; the sludge tank that solid-liquid separation's mud was discharged into is carried out to the sedimentation tank, and the second equalizing basin that solid-liquid separation's sewage was discharged into is carried out to the sedimentation tank, and partial mud backward flow to hydrolysis acidification tank in the MBR pond, and partial mud is discharged into the sludge tank, and sludge dewatering handles in the sludge tank, and the filtrating gets into first equalizing basin again, and the effluent retrieval and utilization or the emission in clean water basin. The utility model discloses a carry out the advanced treatment again after the independent preliminary treatment with high concentration medical wastewater and low concentration waste water such as hospital domestic sewage, dining room waste water, reach discharge to reach standard and retrieval and utilization requirement, reduce treatment cost.
Description
Technical Field
The utility model belongs to the technical field of the useless word is handled, especially, relate to a medical wastewater integrated processing system.
Background
In the normal operation process of large hospitals, high-concentration medical wastewater generated by laboratories, operating rooms and the like is also used in addition to low-concentration wastewater generated by patients, medical workers and staff canteen wastewater. According to the different sources of raw water and different water qualities, the main pollutants in water are: COD, heavy metals (mercury and chromium), organic matters, acid, alkali, disinfectants, bacteria, viruses and the like, and the quality of raw water is relatively complex.
At present, hospitals generally adopt high-concentration wastewater generated by hospitals and low-concentration wastewater such as domestic sewage, canteens and the like to be treated together after being mixed in a regulating tank, the treatment process generally adopts biochemical and disinfection modes, and the effluent can reach the standard. However, if disinfectant in medical wastewater is directly collected and enters a biochemical pool, part of microorganisms can be killed to have adverse effect on biochemical treatment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem and providing medical wastewater integrated processing system to the realization carries out advanced treatment again after low concentration waste water such as high concentration medical waste water and hospital domestic sewage, dining room waste water preliminary treatment alone, reaches discharge to reach standard and retrieval and utilization requirement, reduction treatment cost. In order to achieve the above purpose, the utility model discloses technical scheme as follows:
the medical wastewater comprehensive treatment system comprises a grating tank, a first regulating tank, a chemical reaction tank, a sedimentation tank, a septic tank, a second regulating tank, a hydrolysis acidification tank, an MBR tank and a clear water tank, wherein the grating tank is used for connecting medical wastewater to carry out coarse filtration treatment; the sludge tank that solid-liquid separation's mud was discharged into is carried out to the sedimentation tank, and the second equalizing basin that solid-liquid separation's sewage was discharged into is carried out to the sedimentation tank, and partial mud backward flow to hydrolysis acidification tank in the MBR pond, and partial mud is discharged into the sludge tank, and sludge dewatering handles in the sludge tank, and the filtrating gets into first equalizing basin again, and the effluent retrieval and utilization or the emission in clean water basin.
Specifically, the chemical reaction tank is used for carrying out precipitation reaction according to different COD concentrations.
Specifically, hydrolysis and acidification reactions of anaerobic microorganisms are performed in the hydrolysis acidification tank.
Specifically, an anoxic tank and an aerobic tank are arranged between the hydrolysis acidification tank and the MBR tank, and part of mixed liquor in the aerobic tank flows back to the anoxic tank for nitrification and denitrification.
Compared with the prior art, the utility model discloses medical wastewater integrated processing system's beneficial effect mainly embodies:
the hydrolysis acidification tank degrades macromolecular organic matters in water into micromolecular organic matters through hydrolysis and acidification reactions of anaerobic microorganisms, so that the biodegradability of the wastewater is improved;
the effluent of the hydrolysis acidification tank sequentially enters an anoxic-aerobic tank, and the mixed liquor of the aerobic tank flows back to the anoxic tank, wherein the reflux ratio of the mixed liquor is 100-200%. Under the nitrification-denitrification action of microorganisms, most pollutants such as degradable organic matters, nitrogen, phosphorus, partial bacteria and the like in water are removed;
an MBR tank is adopted to replace a traditional secondary sedimentation tank, so that the occupied area is reduced, the concentration of returned sludge is improved, meanwhile, an MBR membrane plays a role in intercepting, solid-liquid separation is realized, and water outlet is ensured;
the effluent of the MBR tank is further subjected to advanced treatment in an ultrafiltration device, the surface of the ultrafiltration membrane has the comprehensive effects of mechanical screening, membrane pore retardation and membrane surface and membrane pore adsorption, most suspended matters, macromolecular inorganic salt ions and bacteria in the water are removed, and the effluent quality is recycled or discharged after reaching the standard;
the high-concentration medical wastewater, the hospital domestic sewage and the dining room wastewater are respectively pretreated, so that pollutants in the high-concentration medical wastewater can be effectively removed, and the influence of chloride ions and part of harmful bacteria in the medical wastewater on biochemical treatment is reduced.
Drawings
Fig. 1 is a schematic flow chart of an embodiment of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments.
Example 1:
referring to fig. 1, the present embodiment is a medical wastewater comprehensive treatment system, which includes a grid tank for connecting medical wastewater to perform coarse filtration treatment, a first regulation tank for connecting the grid tank, a chemical reaction tank for connecting the first regulation tank, a sedimentation tank for connecting the chemical reaction tank, a septic tank for connecting domestic sewage to canteen wastewater to perform treatment, a second regulation tank for respectively connecting the septic tank and the sedimentation tank, a hydrolysis acidification tank for connecting the second regulation tank, an MBR tank for connecting the hydrolysis acidification tank, and a clear water tank with an ultrafiltration device for connecting the MBR tank; the sludge tank that solid-liquid separation's mud was discharged into is carried out to the sedimentation tank, and the second equalizing basin that solid-liquid separation's sewage was discharged into is carried out to the sedimentation tank, and partial mud backward flow to hydrolysis acidification tank in the MBR pond, and partial mud is discharged into the sludge tank, and sludge dewatering handles in the sludge tank, and the filtrating gets into first equalizing basin again, and the effluent retrieval and utilization or the emission in clean water basin.
And (4) dehydrating the sludge in the sludge tank through a filter press.
An anoxic tank and an aerobic tank are arranged between the hydrolysis acidification tank and the MBR tank, and part of mixed liquor in the aerobic tank flows back to the anoxic tank for nitrification and denitrification.
And carrying out precipitation reaction in the chemical reaction tank according to different COD concentrations.
The hydrolysis acidification tank is used for carrying out hydrolysis and acidification reactions by anaerobic microorganisms.
Sewage is intercepted in the MBR tank, and solid-liquid separation is realized.
Example 2:
referring to fig. 1, the embodiment is a method for comprehensive treatment of medical wastewater, comprising the following steps: s1, preprocessing: conveying the medical wastewater filtered by the grid pond to a first regulating pond, and pumping the wastewater into a chemical reaction pond by a lifting pump after the liquid level in the first regulating pond reaches a set value;
s2, carrying out precipitation reaction in the chemical reaction tank according to different COD concentrations;
when the COD concentration in the wastewater is not high, sequentially delivering alkali, PAC and PAM to a chemical reaction tank, controlling the sufficient reaction time to be 30-60min, then adding NaClO for disinfection treatment, adding a reducing agent to remove the residual NaClO, avoiding the adverse effect of chloride ions on the subsequent biochemical treatment, and discharging the residual NaClO into a sedimentation tank;
when the COD concentration in the raw water is higher, acid and FeSO are added into the chemical reaction tank in sequence4、H2O2Selecting whether to add a Fenton reagent according to the COD concentration of raw water, removing most organic matters through a Fenton oxidation reaction, and discharging the organic matters into a sedimentation tank after coagulation, flocculation, disinfection and reduction reactions;
s3, precipitating for 40-60min in the sedimentation tank, discharging the precipitated sludge subjected to solid-liquid separation into a sludge tank, dehydrating the sludge through a filter press, and then treating outside, wherein the supernatant of the sludge tank enters a first regulating tank; discharging the sewage subjected to solid-liquid separation in the sedimentation tank into a second regulating tank;
s4, hospital domestic sewage and canteen wastewater treated by the septic tank are introduced into the second regulating tank;
s5, biochemical treatment, namely conveying the wastewater in the second regulating tank to a hydrolysis acidification tank, and decomposing most of macromolecular organic matters in the water into micromolecular organic matters under the action of microorganisms to improve the biodegradability of the wastewater; the water outlet end of the hydrolysis acidification tank flows into the anoxic tank and the aerobic tank in sequence;
meanwhile, part of mixed liquor in the aerobic tank flows back to the anoxic tank, and most of pollutants such as nitrogen, phosphorus, COD (chemical oxygen demand), bacteria and the like in water are removed under the alternate action of nitrification and denitrification;
s6, enabling the effluent of the aerobic tank to enter an MBR tank, and further filtering the water by an MBR membrane module;
part of sludge in the MBR tank flows back to the hydrolysis acidification tank to ensure the sludge concentration of a biochemical system, part of sludge is discharged into the sludge tank, the sludge is dehydrated by a filter press and then subjected to outsourcing treatment, and filtrate enters the first regulating tank again;
and S7, enabling the effluent of the MBR tank to enter a clean water tank, connecting the clean water tank with an ultrafiltration device for further deep filtration, and recycling or discharging the effluent after ultrafiltration.
In step S1, the medical wastewater to be treated first passes through the grid pond to trap floating materials and large-particle pollutants in the water, and then enters the first regulating pond.
In step S2, when the raw water has a high COD concentration, dilute sulfuric acid is added to adjust the pH of the wastewater to 2-3, and FeSO is added under acidic conditions4、H2O2And then adding alkali to adjust the pH value of the wastewater to be 8-9, then adding PAC and PAM to carry out coagulation and flocculation reactions, wherein the Fenton reagent has stronger oxidability and has better treatment effect on organic wastewater which is difficult to act by biological degradation or common chemical oxidants, and the action mechanism is as follows:
Fe2++H2O2→Fe3++·OH++·OH-
2Fe2++H2O2→2Fe3++2OH-
Fe3++H2O2→Fe2++HO2·+H+
HO2·+H2O2→O2+H2O+·OH+
RH+·OH+→R·+H2O
R·+O2→ROO+→……→CO2+H2O
meanwhile, when alkali is added to adjust the pH of the wastewater, Fe (OH) exists3Colloid appears, which has flocculation function and can greatly reduce suspended matters in water.
Fe3++3OH-→Fe(OH)3↓
When the embodiment is applied, the hydrolysis acidification tank degrades macromolecular organic matters in water into micromolecular organic matters through hydrolysis and acidification reactions of anaerobic microorganisms, so that the biodegradability of wastewater is improved;
the effluent of the hydrolysis acidification tank sequentially enters an anoxic-aerobic tank, and the mixed liquor of the aerobic tank flows back to the anoxic tank, wherein the reflux ratio of the mixed liquor is 100-200%. Under the nitrification-denitrification action of microorganisms, most pollutants such as degradable organic matters, nitrogen, phosphorus, partial bacteria and the like in water are removed;
an MBR tank is adopted to replace a traditional secondary sedimentation tank, so that the occupied area is reduced, the concentration of returned sludge is improved, meanwhile, an MBR membrane plays a role in intercepting, solid-liquid separation is realized, and water outlet is ensured;
the effluent of the MBR tank is further subjected to advanced treatment in an ultrafiltration device, the surface of the ultrafiltration membrane has the comprehensive effects of mechanical screening, membrane pore retardation and membrane surface and membrane pore adsorption, most suspended matters, macromolecular inorganic salt ions and bacteria in the water are removed, and the effluent quality is recycled or discharged after reaching the standard;
the high-concentration medical wastewater, the hospital domestic sewage and the dining room wastewater are respectively pretreated, so that pollutants in the high-concentration medical wastewater can be effectively removed, and the influence of chloride ions and part of harmful bacteria in the medical wastewater on biochemical treatment is reduced.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (4)
1. Medical waste water integrated processing system, its characterized in that: the device comprises a grating tank for connecting medical wastewater to perform coarse filtration treatment, a first regulating tank for connecting the grating tank, a chemical reaction tank for connecting the first regulating tank, a sedimentation tank for connecting the chemical reaction tank, a septic tank for connecting domestic sewage and canteen wastewater to perform treatment, a second regulating tank for respectively connecting the septic tank and the sedimentation tank, a hydrolysis acidification tank for connecting the second regulating tank, an MBR tank for connecting the hydrolysis acidification tank, and a clear water tank with an ultrafiltration device for connecting the MBR tank; the sludge tank that solid-liquid separation's mud was discharged into is carried out to the sedimentation tank, and the second equalizing basin that solid-liquid separation's sewage was discharged into is carried out to the sedimentation tank, and partial mud backward flow to hydrolysis acidification tank in the MBR pond, and partial mud is discharged into the sludge tank, and sludge dewatering handles in the sludge tank, and the filtrating gets into first equalizing basin again, and the effluent retrieval and utilization or the emission in clean water basin.
2. The integrated medical wastewater treatment system according to claim 1, wherein: and carrying out precipitation reaction in the chemical reaction tank according to different COD concentrations.
3. The integrated medical wastewater treatment system according to claim 1, wherein: the hydrolysis acidification tank is used for carrying out hydrolysis and acidification reactions by anaerobic microorganisms.
4. The integrated medical wastewater treatment system according to claim 1, wherein: an anoxic tank and an aerobic tank are arranged between the hydrolysis acidification tank and the MBR tank, and part of mixed liquor in the aerobic tank flows back to the anoxic tank for nitrification and denitrification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922207925.4U CN211644968U (en) | 2019-12-10 | 2019-12-10 | Medical wastewater comprehensive treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922207925.4U CN211644968U (en) | 2019-12-10 | 2019-12-10 | Medical wastewater comprehensive treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211644968U true CN211644968U (en) | 2020-10-09 |
Family
ID=72695481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922207925.4U Active CN211644968U (en) | 2019-12-10 | 2019-12-10 | Medical wastewater comprehensive treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211644968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981091A (en) * | 2019-12-10 | 2020-04-10 | 苏州希图环保科技有限公司 | Medical wastewater comprehensive treatment system and treatment method thereof |
-
2019
- 2019-12-10 CN CN201922207925.4U patent/CN211644968U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981091A (en) * | 2019-12-10 | 2020-04-10 | 苏州希图环保科技有限公司 | Medical wastewater comprehensive treatment system and treatment method thereof |
| CN110981091B (en) * | 2019-12-10 | 2024-04-05 | 苏州希图环保科技有限公司 | Medical wastewater comprehensive treatment system and treatment method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110981091B (en) | Medical wastewater comprehensive treatment system and treatment method thereof | |
| CN105585220B (en) | A kind of urban sewage treatment system and purification method | |
| CN102786183B (en) | Method for processing garbage leachate | |
| CN101434437B (en) | Processing method for wastewater from cephalosporin synthesis pharmaceutical production | |
| CN108503019A (en) | A kind of membrane bioreactor and sewage water treatment method | |
| CN104710077B (en) | The processing system of synthetic rubber waste water and its processing method | |
| CN109133524A (en) | The processing system and processing method of high COD medicine intermediate wastewater from chemical industry with high salt | |
| CN209778571U (en) | Treatment system for leachate of household garbage landfill | |
| CN211644968U (en) | Medical wastewater comprehensive treatment system | |
| CN206538318U (en) | A kind of device for handling the high organic wastewater of industrial high salt | |
| CN212174735U (en) | System for be used for handling rubber auxiliary agent CBS waste water | |
| CN112960861A (en) | Biological denitrification treatment process for stainless steel pickling wastewater | |
| CN117023919A (en) | Multistage treatment system and multistage treatment process for gas field produced water | |
| CN205590517U (en) | Ozone - membrane bioreactor coking wastewater advanced treatment unit that pH control was adjusted | |
| CN112047566A (en) | Full-quantitative treatment system and method for landfill leachate | |
| CN106430846A (en) | Efficient treatment integrated process for recalcitrant wastewater with low organic matter content | |
| CN106145555A (en) | A kind of efficient combination processing system for high NH4 source water | |
| CN216808506U (en) | Kitchen and kitchen garbage and wastewater treatment system | |
| CN216737990U (en) | Deep treatment system capable of achieving III-class water standard of surface water | |
| CN213327152U (en) | Leachate wastewater discharge treatment equipment | |
| CN205222876U (en) | Multistage fenton processing apparatus of high COD waste water of high salt | |
| KR101136420B1 (en) | Integrated method for treating food waste water, livestock waste water, and night soil | |
| CN212640223U (en) | High concentration excrement sewage treatment system | |
| CN208471827U (en) | Kelp processing waste water treatment system | |
| CN105923888A (en) | Method for advanced treatment of antibiotic waste water by combination of Fenton oxidation and MBR |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |