CN211847613U - Medical sewage treatment device for integrated synchronous denitrification dephosphorization disinfection - Google Patents
Medical sewage treatment device for integrated synchronous denitrification dephosphorization disinfection Download PDFInfo
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- CN211847613U CN211847613U CN202020129783.4U CN202020129783U CN211847613U CN 211847613 U CN211847613 U CN 211847613U CN 202020129783 U CN202020129783 U CN 202020129783U CN 211847613 U CN211847613 U CN 211847613U
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Abstract
The utility model discloses an integrated medical sewage treatment device for synchronous denitrification and dephosphorization disinfection, which comprises a PLC controller, an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, a clear water disinfection tank, a nitrification liquid return pipe and a sludge return pipe, wherein suspended fillers are arranged in the anoxic tank and the aerobic tank, the introduction end of the nitrification liquid return pipe is arranged at the bottom of the aerobic tank, and the liquid outlet end of the nitrification liquid return pipe is arranged at the upper part of the anoxic tank; the introducing end of the sludge return pipe is arranged at the bottom of the sedimentation tank, and the sludge outlet end of the sludge return pipe is arranged at the upper part of the anaerobic tank; the sedimentation tank is connected with a dephosphorization agent dosing device through a dephosphorization pipeline; the clear water disinfection tank is connected with a sodium hypochlorite generator through a disinfection pipeline, and a disinfector is arranged on the disinfection pipeline; the anaerobic tank, the anoxic tank, the aerobic tank, the sedimentation tank and the clear water disinfection tank are integrally formed. The utility model discloses medical sewage treatment plant can realize synchronous nitrogen and phosphorus removal, disinfects the water in the disinfection pond through the sterilizer.
Description
Technical Field
The utility model belongs to the technical field of medical sewage treatment, especially, relate to a medical sewage treatment plant is used in disinfection of synchronous nitrogen and phosphorus removal of integration.
Background
In medical treatment, sewage generated in the processes of treatment, assay and the like contains a large amount of bacteria and viruses, possibly contains heavy metals, disinfectants, organic solvents and the like, and if the sewage is not subjected to disinfection treatment, not only is environmental pollution caused, but also the human health is threatened.
In the prior art, medical sewage is disinfected by ozone, for example, patent document with publication number CN206089262U discloses a small medical sewage treatment device, which comprises a box body, wherein a sterilization and disinfection tank, an ozone generator, a filter and a water pump are sequentially communicated in the box body; the water pump, the ozone generator and the sterilization and disinfection tank are all electrically connected with the microcomputer controller. However, the adoption of ozone for disinfection requires strict control of the concentration of ozone, and meanwhile, leakage prevention work needs to be done, otherwise, the concentration of ozone can seriously harm human health to a certain extent.
In addition, chlorine is adopted to disinfect medical sewage, but the state has requirements on residual chlorine in the waste water disinfected by chlorine, and if sewage treatment facilities do not have special persons on duty and professionals, the residual chlorine is easy to exceed the standard during disinfection by chlorine, so that the environmental protection requirements cannot be met.
Therefore, medical wastewater treatment requires removal of phosphorus and nitrogen from the water and disinfection of the wastewater is required to meet discharge standards.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an integration medical sewage treatment plant, synchronous denitrogenation, dephosphorization to disinfection treatment can solve above-mentioned prior art's weak point completely.
The purpose of the utility model is realized through the following technical scheme: the utility model provides a synchronous nitrogen and phosphorus removal disinfection of integration is with medical sewage treatment plant, includes PLC controller, anaerobism pond, oxygen deficiency pond, good oxygen pond, sedimentation tank and clear water disinfection pond, and the inlet tube links to each other with the anaerobism pond, is equipped with suspended filler, its characterized in that in oxygen deficiency pond and good oxygen pond: the device also comprises a nitrifying liquid return pipe and a sludge return pipe, wherein the introducing end of the nitrifying liquid return pipe is arranged at the bottom of the aerobic tank, and the liquid outlet end of the nitrifying liquid return pipe is arranged at the upper part of the anoxic tank; the introducing end of the sludge return pipe is arranged at the bottom of the sedimentation tank, and the sludge outlet end of the sludge return pipe is arranged at the upper part of the anaerobic tank; the sedimentation tank is connected with a dephosphorization agent dosing device through a dephosphorization pipeline; the clear water disinfection tank is connected with a sodium hypochlorite generator through a disinfection pipeline, and a disinfector is arranged on the disinfection pipeline; the anaerobic tank, the anoxic tank, the aerobic tank, the sedimentation tank and the clear water disinfection tank are integrally formed.
As one of the preferable modes, the bottom parts of the anoxic tank and the aerobic tank are respectively provided with an aeration device, and the aeration devices are connected with a fan through an aeration pipeline bracket.
As one of the preferable modes, the middle part of the sedimentation tank is provided with an inclined tube packing layer, the lower part of the sedimentation tank is a funnel-shaped mud bucket, and a central guide cylinder penetrating through the inclined tube packing layer from top to bottom is arranged in the sedimentation tank.
As one preferable mode, a submersible sewage pump is arranged at the leading-in end of the sludge return pipe; a sludge return pipe valve is arranged on the sludge return pipe.
As one preferable mode, a submersible sewage pump is arranged at the leading-in end of the nitrifying liquid return pipe; a nitrifying liquid reflux pipe valve is arranged on the nitrifying liquid reflux pipe.
As one of the preferable modes, the PLC is respectively connected with the dephosphorization agent dosing device and the sodium hypochlorite generator.
As one of the preferred modes, the sterilizer is connected with the top of the sodium hypochlorite generator through the dosing nozzle, an industrial salt device is arranged in the sodium hypochlorite generator, and the industrial salt device is connected with a tap water pipe connecting pipe.
As one of the preferable modes, a stirring device is arranged in the phosphorus removal medicament dosing device, and the phosphorus removal medicament dosing device is connected with a second tap water pipe connecting pipe.
Compared with the prior art, the beneficial effects of the utility model reside in that: synchronous nitrogen and phosphorus removal medical sewage treatment plant for disinfection of integration regularly throws the phosphorus removal agent, regularly arranges mud, and the whole equipment function can realize synchronous nitrogen and phosphorus removal through mud backward flow and nitrify the liquid backward flow, further disinfects to the water in the disinfection pond through the sterilizer.
Drawings
Fig. 1 is a schematic structural view of the medical sewage treatment device of the utility model.
In the drawings: 1-a fan; 2-suspended fillers; 3-an anaerobic tank; 4-anoxic pond; 5-an aerobic tank; 6-a sedimentation tank; 7-a central draft tube; 8-inclined tube packing layer; 9-clear water disinfection tank; 10-a submersible sewage pump; 11-a mud bucket; 12-a sludge return pipe; 13-nitrifying liquid reflux pipe; 14-sludge return pipe valve; 15-nitration liquid reflux pipe valve; 16-an aeration pipeline bracket; 17-an aeration device; 18-a medicine adding nozzle; 19-tubular uv disinfector; a 20-sodium hypochlorite generator; 21-a PLC control box; 22-a water inlet pipe; 23-a tap water pipe connecting pipe; 24-a dosing device; 25-second tap water pipe connection.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figure 1, the integrated medical sewage treatment device for synchronous denitrification and dephosphorization disinfection comprises a PLC (programmable logic controller) 21, an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5, a sedimentation tank 6, a clear water disinfection tank 9, a nitrifying liquid return pipe 13 and a sludge return pipe 12. The anaerobic tank 3, the anoxic tank 4, the aerobic tank 5, the sedimentation tank 6 and the clear water disinfection tank 9 are integrally formed.
The water inlet pipe 22 is connected with the anaerobic tank 3, the suspended filler 2 is arranged in the anoxic tank 4 and the aerobic tank 5, the biological filler adopts suspended filler, and the filler has the advantages of high load, simplicity and easiness in construction, small volume, stability and reliability in operation, convenience in management, convenience in maintenance and replacement and the like. The MBBR filler is a microbial carrier applied to an MBBR process, mainly provides an environment suitable for growth of microorganisms, adopts a scientific formula, is formed by fusing multiple trace elements which are beneficial to the rapid attachment and growth of the microorganisms in a high polymer material according to different sewage properties through special process modification and construction, and has the advantages of large specific surface area, good hydrophilicity, high bioactivity, rapid film formation, good treatment effect, long service life and the like.
The inlet end of the nitrifying liquid return pipe 13 is arranged at the bottom of the aerobic tank 5, and the outlet end of the nitrifying liquid return pipe 13 is arranged at the upper part of the anoxic tank 4; the leading-in end of the sludge return pipe 12 is arranged at the bottom of the sedimentation tank 6, and the sludge outlet end of the sludge return pipe 12 is arranged at the upper part of the anaerobic tank 3.
The sedimentation tank 6 is connected with a dephosphorization agent dosing device 24 through a dephosphorization pipeline; a stirring device is arranged in the dephosphorization agent dosing device 24, and the dephosphorization agent dosing device 24 is connected with a second tap water pipe connecting pipe 25. The phosphorus removal medicament dosing device adopts chemical agents for chemical phosphorus removal, mainly metal salt agents and calcium hydroxide. Many high-valence metal ion agents are added into sewage and combined with soluble phosphorus ions in the sewage to generate insoluble compounds, and the metal salt agents for phosphorus precipitation are mainly Fe3+ salt, Fe2+ salt and Al3+ salts, these agents being used in solution and suspension; in addition to the metal salt agents, calcium hydroxide is also used as a precipitating agent, reacting to form water insoluble calcium phosphate.
The clear water disinfection tank 9 is connected with a sodium hypochlorite generator 20 through a disinfection pipeline, and a disinfector 19 is arranged on the disinfection pipeline; sterilizer 19 links to each other through adding medicine mouth 18 and sodium hypochlorite generator 20's top, is equipped with the industrial salt device in the sodium hypochlorite generator 20, and the industrial salt device links to each other with water pipe connecting pipe 23 No. one.
Be equipped with ultraviolet tube in the clear water disinfection pond for to the further ultraviolet sterilization that carries out of water after above-mentioned processing, can effectually kill most sewage bacterium. Ultraviolet sterilization adopts ultraviolet rays with the wavelength of 240-280 nm to kill and destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in bacteria and viruses, so that growth cell death and regeneration cell death are caused, and the effects of sterilization and disinfection are achieved.
The PLC 21 is respectively connected with a dephosphorization agent dosing device 24 and a sodium hypochlorite generator 20.
The bottom of the anoxic tank 4 and the bottom of the aerobic tank 5 are respectively provided with an aeration device 17, and the aeration device 17 is connected with the fan 1 through an aeration pipeline bracket 16. The aeration not only makes the liquid in the pool contact with the air for oxygenation, but also accelerates the transfer of oxygen in the air to the liquid due to the stirring of the liquid, thereby completing the purpose of oxygenation; in addition, the aeration also can prevent the suspension body in the tank from sinking and strengthen the contact between the organic matters in the tank and the microorganisms and the dissolved oxygen, thereby ensuring the oxidative decomposition of the microorganisms in the tank on the organic matters in the sewage under the condition of sufficient dissolved oxygen. The aeration fan has good and bad effects, not only affects the biochemical treatment effect of sewage, but also directly affects the land occupation, investment and operating cost of a treatment field.
An inclined tube packing layer 8 is arranged in the middle of the sedimentation tank 6, and a funnel-shaped mud bucket 11 is arranged at the lower part of the sedimentation tank 6 and is used for leaking mud; a central guide cylinder 7 which penetrates through the inclined tube packing layer 8 from top to bottom is arranged in the sedimentation tank 6. The central guide cylinder is made of carbon steel, and the size is determined by the size of the sedimentation tank; the central guide cylinder is arranged in the middle of the inclined tube packing layer 8 and used for guiding flow up and down.
A submersible sewage pump 10 is arranged at the leading-in end of the sludge return pipe 12; a sludge return pipe valve 14 is arranged on the sludge return pipe 12, and a submersible sewage pump 10 is arranged at the introduction end of the nitrifying liquid return pipe 13; a nitrifying liquid return pipe valve 15 is arranged on the nitrifying liquid return pipe 13. The sludge return pipe valve and the nitrifying liquid return pipe valve are PVC loose joint ball valves, the submersible sewage pump is automatically controlled by a PLC to be started and stopped, the time is adjustable, the amount of return water can be adjusted, and the adjustment is carried out manually. The sewage treatment device adopts a submersible sewage pump, the control of the submersible sewage pump is completed by detecting the liquid level in a sewage pool through a liquid level ball float valve, the submersible sewage pump is started when the liquid level reaches the working water level from low to high, and the submersible sewage pump is turned off when the liquid level reaches the low water level from high to low. The liquid level is detected through a liquid level switch, the liquid level switch is controlled by a PLC (programmable logic controller), and when the sewage of the septic tank is less and the liquid level is lower than the starting liquid level of the submersible sewage pump, the submersible sewage pump stops working.
Wherein: the power supply of the equipment adopts 380V; the PLC carries out program setting according to application scenes, and configures various types of online monitoring instruments and remote control systems according to user requirements. The PLC control center controls the phosphorus removing agent feeding device, the sodium hypochlorite generator and the ultraviolet sterilizer to synchronously work and stop along with the start and stop of the water inlet pump.
Whole equipment integration shaping, equipment are the cuboid, and its size and material decide according to inflow and quality of water condition, and the different integrated equipment of equidimension is adopted to the scene of using.
The suspension filler adopts elastic three-dimensional filler with the specification of phi 150, phi 100 and phi 80mm, and has the advantages of simple construction, convenient management, convenient maintenance and replacement and the like.
The aeration system adopts an aeration disc and a perforated aeration pipe system, so that the blockage is not easy to happen, and the whole aeration system is easy to maintain and manage. The aeration system is convenient to operate and simple to maintain.
The biological pool is not blocked, the volume of the biological pool is fully utilized, and dead angles are avoided. The filler and the water flow can be mixed in the whole volume of the biological tank, so that the possibility of blockage of the biological tank is fundamentally eliminated, and the tank volume is completely utilized.
The high-quality durable filler, the aeration system and the water outlet device can ensure that the whole system can be used for a long time without replacement, and have low depreciation rate and long service life.
The central guide cylinder is made of carbon steel, the size of the central guide cylinder is determined by the size of the sedimentation tank, and the bottom of the vertical flow pipe is shaped into conical water distribution after two circular pipes are welded in an L shape.
The sludge return pipe is made of PVC material, and a PVC thread opening and glue are connected with the sludge water flow pump; one ball valve is matched with the movable joint.
The nitrifying liquid return pipe is made of PVC material, and a PVC thread opening and glue are connected with the sludge water flow pump; one ball valve is matched with the movable joint.
The fan has two, one is equipped with one and uses, generally adopts the rotation fan, and the fan pipe is PPR material or steel pipe, specifically can cooperate the use.
The aeration plate phi 215 of the aeration device and the aeration pipeline adopt PVC pipes.
The inclined tube filler is honeycombed, and the installation angle is 60 degrees.
The connection mode of the pipeline type ultraviolet rays can be flange connection or threaded connection, and the material is stainless steel; is used for the first disinfection after the hospital sewage treatment.
Sodium hypochlorite generator: because the contact of chloride ions or chlorine gas and a sodium hydroxide solution can generate sodium chloride and sodium hypochlorite (NaClO), the industrial hydrogen production sodium oxide uses a specially-constructed electrolytic cell with an ion exchange membrane (not allowing negatively-charged chloride ions or chlorine gas to pass through) to isolate the chloride ions or chlorine gas from the sodium hydroxide; and sodium hypochlorite generated by electrolysis is used for secondary disinfection of effluent.
The medicine adding nozzle is connected by a PVC thread opening.
The sludge discharge pipe of the high-efficiency coagulating sedimentation tank adopts a perforated sludge discharge steel pipe, and the outlet of the perforated sludge discharge steel pipe is connected with a flange and discharged into a sludge tank.
The utility model discloses medical sewage treatment plant's operation mode as follows:
when starting the equipment, the circuit is checked, whether the wiring line is correct or not, and whether the voltage and the current meet the requirements or not are checked. The equipment is controlled by a PLC (programmable logic controller) automatically, is controlled by a time relay, outputs the signals by an alternating current contactor, can simultaneously control a submersible sewage pump and a fan, is combined with real-time monitoring of working conditions, has an automatic protection function, and is also provided with a manual and automatic control system. When the water pump is started, whether the water pump pipeline leaks and absorbs water or not is checked, and whether the water pump pipeline is blocked or not is judged.
The equipment adopts a submersible sewage pump, wherein the control of the water pump is completed by detecting the liquid level in a sewage pool through a liquid level ball float valve, the sewage pump is started when the liquid level reaches the working water level from low to high, the working pump is turned off when the liquid level reaches the low water level from high to low, the liquid level is detected through a liquid level switch, and whether the rotating direction is correct or not is checked when a fan is started. When the sewage of the septic tank is less and the liquid level is lower than the starting liquid level of the water pump, the water pump stops working.
The fan and the water pump are automatically operated and controlled. The equipment control center finishes the work time once on the electric control cabinet according to the design arrangement; the opening and closing of the submersible sewage pump, the fan, the dosing device and the like are manually controlled through a key switch on the panel.
The anaerobic tank utilizes the function of anaerobic bacteria to hydrolyze, acidify and methanize the organic matters, remove the organic matters in the wastewater, improve the biodegradability of the sewage and be beneficial to subsequent aerobic treatment.
The denitrifying bacteria in the anoxic pond take the organic matters in the sewage as the carbon source and the energy source for denitrification so as to reflux NO in the water3-N and NO2the-N is used as a denitrification oxygen source, denitrification is carried out under the action of a biological membrane of the combined filler, pollutants such as ammonia nitrogen, COD and the like in the wastewater are removed, and NO in the tank3The N concentration is greatly reduced, while the phosphorus variation is small.
Aerobic respiration is carried out on the activated sludge in the aerobic tank, and organic matters are biochemically degraded by microorganisms and continuously descend; simultaneously, nitration reaction occurs, NH in water3N (ammonia nitrogen) is subjected to nitration reaction to generate nitrate radical, organic matters in water are oxidized and decomposed to supply energy to phosphorus-absorbing microorganisms, the microorganisms absorb phosphorus from the water, the phosphorus enters cell tissues and is enriched in the microorganisms, and the phosphorus-rich sludge is discharged from the system after precipitation and separation.
The phosphorus removal agent is added at regular intervals, the sludge is discharged at regular intervals, and the integral equipment can realize synchronous nitrogen and phosphorus removal through sludge backflow and nitrification liquid backflow.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a synchronous nitrogen and phosphorus removal disinfection of integration is with medical sewage treatment plant, includes PLC controller, anaerobism pond, oxygen deficiency pond, good oxygen pond, sedimentation tank and clear water disinfection pond, and the inlet tube links to each other with the anaerobism pond, is equipped with suspended filler, its characterized in that in oxygen deficiency pond and good oxygen pond: the device also comprises a nitrifying liquid return pipe and a sludge return pipe, wherein the introducing end of the nitrifying liquid return pipe is arranged at the bottom of the aerobic tank, and the liquid outlet end of the nitrifying liquid return pipe is arranged at the upper part of the anoxic tank; the introducing end of the sludge return pipe is arranged at the bottom of the sedimentation tank, and the sludge outlet end of the sludge return pipe is arranged at the upper part of the anaerobic tank; the sedimentation tank is connected with a dephosphorization agent dosing device through a dephosphorization pipeline; the clear water disinfection tank is connected with a sodium hypochlorite generator through a disinfection pipeline, and a disinfector is arranged on the disinfection pipeline; the anaerobic tank, the anoxic tank, the aerobic tank, the sedimentation tank and the clear water disinfection tank are integrally formed.
2. The integrated medical sewage treatment device for synchronous denitrification, dephosphorization and disinfection according to claim 1, wherein: the bottom of the anoxic tank and the bottom of the aerobic tank are respectively provided with an aeration device, and the aeration devices are connected with a fan through an aeration pipeline bracket.
3. The integrated medical sewage treatment device for synchronous denitrification, dephosphorization and disinfection according to claim 1, wherein: the middle part of sedimentation tank is equipped with the pipe chute packing layer, and the lower part of sedimentation tank is the mud fill that leaks hopper-shaped, is equipped with the central draft tube that down runs through the pipe chute packing layer from the top in the sedimentation tank.
4. The integrated medical sewage treatment device for synchronous denitrification, dephosphorization and disinfection according to claim 1, wherein: a submersible sewage pump is arranged at the leading-in end of the sludge return pipe; a sludge return pipe valve is arranged on the sludge return pipe.
5. The integrated medical sewage treatment device for synchronous denitrification, dephosphorization and disinfection according to claim 1, wherein: a sewage submersible pump is arranged at the inlet end of the nitrifying liquid return pipe; a nitrifying liquid reflux pipe valve is arranged on the nitrifying liquid reflux pipe.
6. The integrated medical sewage treatment device for synchronous denitrification, dephosphorization and disinfection according to claim 1, wherein: the PLC controller is respectively connected with the dephosphorization agent dosing device and the sodium hypochlorite generator.
7. The integrated medical sewage treatment device for synchronous denitrification, dephosphorization and disinfection according to claim 1, wherein: the sterilizer is connected with the top of the sodium hypochlorite generator through the dosing nozzle, an industrial salt device is arranged in the sodium hypochlorite generator, and the industrial salt device is connected with a tap water pipe connecting pipe.
8. The integrated medical sewage treatment device for synchronous denitrification, dephosphorization and disinfection according to claim 1, wherein: a stirring device is arranged in the phosphorus removal agent dosing device, and the phosphorus removal agent dosing device is connected with a second tap water pipe connecting pipe.
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| CN202020129783.4U CN211847613U (en) | 2020-01-20 | 2020-01-20 | Medical sewage treatment device for integrated synchronous denitrification dephosphorization disinfection |
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| CN202020129783.4U CN211847613U (en) | 2020-01-20 | 2020-01-20 | Medical sewage treatment device for integrated synchronous denitrification dephosphorization disinfection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112777870A (en) * | 2021-01-13 | 2021-05-11 | 浙江一清环保工程有限公司 | Hospital wastewater treatment method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112777870A (en) * | 2021-01-13 | 2021-05-11 | 浙江一清环保工程有限公司 | Hospital wastewater treatment method and system |
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