CN105060564B - The special sewage sterilization system of dental clinic - Google Patents
The special sewage sterilization system of dental clinic Download PDFInfo
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- CN105060564B CN105060564B CN201510505618.8A CN201510505618A CN105060564B CN 105060564 B CN105060564 B CN 105060564B CN 201510505618 A CN201510505618 A CN 201510505618A CN 105060564 B CN105060564 B CN 105060564B
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Abstract
The invention belongs to dentistry wastewater disinfection field, more particularly to a kind of special sewage sterilization system of dental clinic, blowoff line including facility department and the dentistry motorized pumping systems being connected with the spittoon collector nozzle of dental comprehensive therapeutic chair, strong and weak suction pipe road, dentistry motorized pumping systems pass through the first pipeline and connect wastewater disinfection pond；Blowoff line connects No.1 water sprayer, No.1 water sprayer connects the delivery port of No.1 pump, the water inlet of No.1 pump is connected by the second pipeline with wastewater disinfection pond, No.1 water sprayer connects wastewater disinfection pond by ozone incoming line, No. two water sprayers are installed, No. two water sprayers connect low-voltage electrolysis pure water ozone generator on ozone incoming line；Wastewater disinfection sets sewage draining exit on pond.The present invention can carry out centralized collection, sterilization, discharge to all sewage of dental clinic, meet requirement and economical and practical of the country to dental clinic sewage disposal discharge, suitable for the use of middle-size and small-size all kinds of dental clinics.
Description
Technical field
The present invention relates to a kind of special sewage sterilization system of dental clinic, belongs to dentistry wastewater disinfection field.
Background technology
Containing some special pollutants, such as medicine, disinfectant and various bacteriums, virus in dental clinic sewage,
The sewage of the national this type of compulsive requirement at present, which has to pass through, disinfects and could discharge.Larger medical mechanism is typically using exposure
The handling process of gas biofilter+disinfection by chlorine dioxide, but the construction of BAF needs to carry out civil engineering, chlorine dioxide
Sterilization needs to use industrial synthesis hydrochloric acid to produce chlorine dioxide using raw material as a kind of.But hydrochloric acid belongs to hazardous chemical, right
It is uneconomical in the small-sized dental clinic for producing a small amount of sewage, use.
In view of, there is the equipment to be carried out disinfection using ozone to sewage at present in requirements above.But typically use with sky
Gas produces ozone for the mode of raw material high-frequency and high-voltage corona.Because nitrogen content is more than 78% in air, if be exposed to
The environment of electrion, it is easy to produce oxynitrides.And the Main Ingredients and Appearance of oxynitrides is nitrogen dioxide, people is contacting
150mg/m3After nitrogen dioxide 3h~24h above, respiratory symptom just occurs, such as coughs, generate heat, out of breath, band in phlegm
The trace of blood, extremely feeble, nausea and headache.Ozone concentration caused by the mode of high-frequency and high-voltage corona is low simultaneously, and maximum concentration only has
6%, Disinfection Effect is poor.
The sewage of dental clinic mainly includes sewage, the dental comprehensive therapeutic chair power suction pipe of dental clinic facility department
The sewage on road, the sewage of dental comprehensive therapeutic chair spittoon.There are dentistry motorized pumping systems at present, dental composite can be controlled
The sewage for treating chair is collected, and then carry out disinfection discharge again.But present most of dental clinics are arranged on same floor, are disappeared
Sewage in malicious supply room is (such as：The sewage of disinfection cabinet discharge and the sewage of cleaning medicine equipment discharge etc.) with drainage pipeline
Trickling, can not collect, also directly be discharged for the sewage in dental comprehensive therapeutic chair spittoon, do not meet GB18466-2005《Doctor
Treat mechanism sewage drainage standard》Requirement.
The content of the invention
Deficiency of the prior art, the technical problem to be solved in the present invention are more than：There is provided one kind can be by dentistry
The dirt of the sewage of outpatient service facility department, the sewage and dental comprehensive therapeutic chair spittoon on dental comprehensive therapeutic chair power suction pipe road
Water carry out centralized collection and using it is a kind of it is environmentally friendly by the way of the sewage suitable for dental clinic that carries out disinfection, finally discharged
Decontamination system.
The special sewage sterilization system of dental clinic of the present invention, including the blowoff line of facility department and and dentistry
The spittoon collector nozzle of comprehensive treatment chair, the dentistry motorized pumping systems of strong and weak suction pipe road connection, dentistry motorized pumping systems pass through
First pipeline connection wastewater disinfection pond；Blowoff line connection No.1 water sprayer, the delivery port of No.1 water sprayer connection No.1 pump, one
The water inlet of number pump is connected by the second pipeline with wastewater disinfection pond, and No.1 water sprayer connects sewage by ozone incoming line and disappeared
Malicious pond, No. two water sprayers are installed on ozone incoming line, and No. two water sprayers connect low-voltage electrolysis pure water ozone generators；No.1
Filter is respectively mounted on the water inlet of pump and blowoff line；It is located at No. two water sprayers and wastewater disinfection pond on ozone incoming line
Between part and the first pipeline on be respectively mounted check valve；Wastewater disinfection sets sewage draining exit on pond.
Dentistry motorized pumping systems in the present invention pass through the electronic suction of dentistry using product ripe at present
The sewage and the sewage of strong and weak suction pipe road suction that system can discharge the spittoon of dental comprehensive therapeutic chair are collected, side by side
It is put into wastewater disinfection pond.
The collection of dental clinic facility department sewage uses siphon principle in the present invention, and specific work process is as follows：One
Number pump is by the sewage in the continuous sucks sewage sterilization pool of No.1 water sprayer, when sewage passes through No.1 water sprayer, inside it
Negative pressure is produced, the sewage that blowoff line is entered in DBPs precursors room is inhaled into No.1 water sprayer under differential pressure action, so as to realize
Collection to facility department sewage.The filter set on blowoff line can filter to the sewage of collection, to deter
Fill in No.1 water sprayer；No.1 pump water inlet mouth is also provided with filter, and enter No.1 pump to prevent dirt causes to damage to the pump housing
Low-voltage electrolysis pure water ozone generator in the present invention can produce ozone by low-voltage electrolysis pure water mode,
Both it is environmentally friendly, the ozone of high concentration can be produced again (caused ozone concentration is 20-22%).But the pure water-ozone of low-voltage electrolysis occurs
Caused Maximum Concentration of Ozone is low in device, directly can not be filled with sewage, and the present invention is supplied by No. two water sprayers using with collecting sterilization
Room sewage identical principle is answered, by the dirt in DBPs precursors room during sewage in the continuous sucks sewage sterilization pool of No.1 pump
Water and ozone suction wastewater disinfection pond, carry out disinfection.On ozone incoming line between No. two water sprayers and wastewater disinfection pond
Part installation check valve, blow back into No. two water sprayers to prevent the sewage in wastewater disinfection pond and cause to damage.
The sewage draining exit in wastewater disinfection pond includes manual blowdown mouth and automatic pollution discharge mouth in the present invention；Automatic pollution discharge mouth passes through
Three pipelines connect the water inlet of No. two pumps, install drain filter on the 3rd pipeline, the delivery port of No. two pumps goes out for disinfecting sewage water
Mouthful, stop position liquid-level switch and open position liquid-level switch are installed from bottom to top in wastewater disinfection pond, control is installed on automatic pollution discharge mouth
Valve processed, control valve and each liquid-level switch are all connected with control system；Valve is installed on manual blowdown mouth.Pumping out the mouth of a river by No.1 will
Ozone, facility department sewage collecting enter wastewater disinfection pond；By dentistry motorized pumping systems by dental comprehensive therapeutic chair phlegm
Broad-mouthed receptacle for holding liquid sewage, strong and weak suction pipe road sewage collecting enter wastewater disinfection pond, carry out disinfection.Where water level reaches open position liquid-level switch
Mid water levels when, the sewage discharge for meeting emission request sterilized is entered into sewer by No. two pumps；Stop when water level reaches
During lowest water level where stop bit liquid-level switch, stop discharge.
Preferably, alarm bit liquid-level switch is installed in wastewater disinfection pond, corresponding alarm bit liquid-level switch installs alarm,
Alarm bit liquid-level switch and alarm are respectively mounted control system.When open position liquid-level switch or control valve occur abnormal, water level
It may proceed to rise after reaching the mid water levels where open position liquid-level switch, the highest water where alarm bit liquid-level switch is reached
During position, by alarm equipment alarm, user is prompted to open the valve on manual blowdown mouth.
Preferably, overfall is set on wastewater disinfection pond top.When wastewater disinfection pond is placed in wastewater disinfection room, user
Warning message can not be obtained, continues to rise with water level, sewage can be discharged into sewer by overfall.
Preferably, spittoon sewage collector is installed, spittoon sewage is received between spittoon collector nozzle and dentistry motorized pumping systems
Storage is arranged on the lower section of spittoon collector nozzle, is installed from bottom to top in spittoon sewage collector and stops liquid-level switch, opens liquid level
Switch and alarm liquid level switch, corresponding alarm liquid level switch the second alarm of installation, set spittoon dirty on spittoon sewage collector
Water out, magnetic valve is installed on spittoon outlet of sewer, each liquid-level switch, the second alarm and magnetic valve are all connected with control system.
The mouthwash of patient is flowed into spittoon sewage collector by spittoon collector nozzle.According to each liquid set on spittoon sewage collector
Bit switch, when the mid water levels where the sewage in the collector reaches unlatching liquid-level switch, liquid-level switch closure is opened, even
It is connected on magnetic valve at spittoon outlet of sewer to open, by the sewage discharge in collector, when sewage reaches stop solution in collector
During lower water level where bit switch, stop liquid-level switch and disconnect, closed electromagnetic valve, stop discharge.If there is exception in magnetic valve,
The high water level that water level is risen to where alarm liquid level switch, starts alarm.Manual blowdown can be opened in magnetic valve side, by sewage
Discharge and overhauled.The electromagnetic valve outlet can be directly connected to dentistry motorized pumping systems；First it can also be controlled with dental composite
The strong and weak suction pipe road connection of chair is treated, is connected indirectly with dentistry motorized pumping systems by strong and weak suction pipe road afterwards.
The possessed compared with prior art beneficial effect of the present invention is：
The present invention is reasonable in design, can be by dental clinic facility department, dental comprehensive therapeutic chair power suction pipe road
And the sewage in dental comprehensive therapeutic chair spittoon carries out centralized collection, and produced by low-voltage electrolysis pure water ozone generator
Ozone, all sewage of dental clinic are carried out concentrating sterilization and finally discharged, have both met country to dental clinic sewage disposal
The requirement of discharge, but it is economical and practical, suitable for the use of middle-size and small-size all kinds of dental clinics.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of spittoon sewage collector.
In figure：1st, blowoff line；2nd, filter；3rd, No.1 pump；4th, No.1 water sprayer；5th, ozone incoming line；6th, No. two
Water sprayer；7th, check valve；8th, low-voltage electrolysis pure water ozone generator；9th, wastewater disinfection pond；10th, overfall；11st, the first pipe
Road；12nd, dentistry motorized pumping systems；13rd, No. two pumps；14th, disinfecting sewage water exports；15th, drain filter；16th, the 3rd pipeline；
17th, manual blowdown mouth；18th, stop position liquid-level switch；19th, open position liquid-level switch；20th, alarm bit liquid-level switch；21st, the second pipe
Road；22nd, spittoon sewage collector；23rd, liquid-level switch is stopped；24th, liquid-level switch is opened；25th, alarm liquid level switchs；26th, electromagnetism
Valve.
Embodiment
Embodiments of the invention are described further below in conjunction with the accompanying drawings：
As shown in figure 1, the blowoff line 1 of the special sewage sterilization system of dental clinic including facility department and comprehensive with dentistry
Spittoon collector nozzle, the dentistry motorized pumping systems 12 of strong and weak suction pipe road connection for the treatment of chair are closed, dentistry motorized pumping systems 12 are logical
Cross the first pipeline 11 connection wastewater disinfection pond 9；Blowoff line 1 connects No.1 water sprayer 4, and No.1 water sprayer 4 connects No.1 pump 3
Delivery port, the water inlet of No.1 pump 3 are connected by the second pipeline 21 with wastewater disinfection pond 9, and No.1 water sprayer 4 is imported by ozone
Pipeline 5 connects wastewater disinfection pond 9, No. two water sprayers 6 is installed on ozone incoming line 5, it is pure that No. two water sprayers 6 connect low-voltage electrolysis
Water purification ozone generator 8；Filter 2 is respectively mounted on the water inlet of No.1 pump 3 and blowoff line 1；Ozone incoming line 5 is upper
Check valve 7 is respectively mounted on part and the first pipeline 11 between No. two water sprayers 6 and wastewater disinfection pond 9；Wastewater disinfection pond 9
Upper setting sewage draining exit.
Dentistry motorized pumping systems 12 in the present invention are taken out using product ripe at present by the way that dentistry is electronic
The sewage and the sewage of strong and weak suction pipe road suction that desorption system 12 can discharge the spittoon of dental comprehensive therapeutic chair are collected,
And drain into wastewater disinfection pond 9.
The collection of dental clinic facility department sewage uses siphon principle, and its course of work is as follows：No.1 pump 3 passes through one
Sewage in number continuous sucks sewage sterilization pool 9 of water sprayer 4, when sewage passes through No.1 water sprayer 4, it is internal produce it is negative
Press, the sewage that blowoff line 1 is entered in DBPs precursors room is inhaled into No.1 water sprayer 4 under differential pressure action, is offseted so as to realize
The collection of malicious supply room sewage.The filter 2 set on blowoff line 1 can filter to the sewage of collection, with anti-blocking
No.1 water sprayer 4；The water inlet of No.1 pump 3 is also provided with filter 2, and enter No.1 pump 3 to prevent dirt causes to damage to the pump housing
Low-voltage electrolysis pure water ozone generator 8 in the present invention can be produced smelly by low-voltage electrolysis pure water mode
Oxygen, it is both environmentally friendly, the ozone of high concentration can be produced again (caused ozone concentration is 20-22%).But the pure water-ozone of low-voltage electrolysis
Caused Maximum Concentration of Ozone is low in generator 8, directly can not be filled with sewage, the present invention by No. two water sprayers 6, using with collection
Facility department sewage identical principle, by DBPs precursors during sewage in the continuous sucks sewage sterilization pool 9 of No.1 pump 3
Room sewage and ozone suction wastewater disinfection pond 9, carry out disinfection.It is located at No. two water sprayers 6 and wastewater disinfection on ozone incoming line 5
Part installation check valve 7 between pond 9, blows back into No. two water sprayers 6 to prevent the sewage in wastewater disinfection pond 9 and causes to damage.
In the present embodiment：
The sewage draining exit in wastewater disinfection pond 9 includes manual blowdown mouth 17 and automatic pollution discharge mouth；Automatic pollution discharge mouth passes through the 3rd pipe
Road 16 connects the water inlet of No. two pumps 13, drain filter 15 is installed on the 3rd pipeline 16, the delivery port of No. two pumps 13 is sterilization
Outlet of sewer 14, stop position liquid-level switch 18, open position liquid-level switch 19 and alarm bit are installed from bottom to top in wastewater disinfection pond 9
Liquid-level switch 20, corresponding alarm bit liquid-level switch 20 install alarm, install control valve on automatic pollution discharge mouth, each liquid-level switch,
Alarm and control valve are all connected with control system；Valve is installed on manual blowdown mouth 17；On the top of wastewater disinfection pond 9, overflow is set
Mouth 10.Ozone, facility department sewage collecting are entered by wastewater disinfection pond 9 by the delivery port of No.1 pump 3；Taken out by the way that dentistry is electronic
Dental comprehensive therapeutic chair spittoon sewage, strong and weak suction pipe road sewage collecting are entered wastewater disinfection pond 9 by desorption system 12, are carried out disinfection.
When the mid water levels where water level reaches open position liquid-level switch 19, meet emission request by what is sterilized by No. two pumps 13
Sewage discharge enter sewer；When the lowest water level where water level reaches stop position liquid-level switch 18, stop discharge；Work as unlatching
When position liquid-level switch 19 or control valve occur abnormal, water level may proceed to after reaching the mid water levels at the place of open position liquid-level switch 19
Rise, when the peak level where reaching alarm bit liquid-level switch 20, by alarm equipment alarm, prompt user to open row manually
Valve on dirty mouth 17.When wastewater disinfection pond 9 is placed in wastewater disinfection room, user can not obtain warning message, with water level
Continue rise, sewage can be discharged into sewer by overfall 10.
Spittoon sewage collector 22, spittoon sewage collector are installed between spittoon collector nozzle and dentistry motorized pumping systems 12
22 are vertically mounted on the lower section of spittoon collector nozzle, and its structure is as shown in Fig. 2 installation stops from bottom to top in spittoon sewage collector 22
Only liquid-level switch 23, unlatching liquid-level switch 24 and alarm liquid level switch 25, corresponding the second alarms of installation of alarm liquid level switch 25,
Spittoon outlet of sewer is set on spittoon sewage collector 22, magnetic valve 26, each liquid-level switch, second are installed on spittoon outlet of sewer
Alarm and magnetic valve 26 are all connected with control system.The mouthwash of patient flows into spittoon sewage collector 22 by spittoon collector nozzle
In.According to each liquid-level switch set on spittoon sewage collector 22, when the sewage in the collector reaches unlatching liquid-level switch
During the mid water levels at 24 places, open liquid-level switch 24 and close, be connected to the magnetic valve 26 at spittoon outlet of sewer and open, will receive
Sewage discharge in storage, when sewage reaches the lower water level for stopping the place of liquid-level switch 23 in collector, stop liquid-level switch
23 are disconnected, and magnetic valve 26 is closed, and stop discharge.If exception occurs in magnetic valve 26, water level rises to alarm liquid level and switchs 25 institutes
High water level, start alarm.Manual blowdown can be opened in the side of magnetic valve 26, by sewage discharge and is overhauled.The electromagnetism
The outlet of valve 26 can be directly connected to dentistry motorized pumping systems 12；Strong and weak suction pipe road that can also be first with dental comprehensive therapeutic chair connects
Connect, be connected indirectly with dentistry motorized pumping systems 12 by strong and weak suction pipe road afterwards.
Claims (6)
- A kind of 1. special sewage sterilization system of dental clinic, it is characterised in that：Blowoff line including facility department（1）With with The spittoon collector nozzle of dental comprehensive therapeutic chair, the dentistry motorized pumping systems of strong and weak suction pipe road connection（12）, the electronic suction of dentistry System（12）Pass through the first pipeline（11）Connect wastewater disinfection pond（9）；Blowoff line（1）Connect No.1 water sprayer（4）, No.1 water Emitter（4）Connect No.1 pump（3）Delivery port, No.1 pump（3）Water inlet pass through the second pipeline（21）With wastewater disinfection pond（9） Connection, No.1 water sprayer（4）Pass through ozone incoming line（5）Connect wastewater disinfection pond（9）, No. two water sprayers（6）Installed in smelly Oxygen incoming line（5）Bypass on, the caliber of bypass is less than ozone incoming line（5）Caliber, No. two water sprayers（6）Connect low Piezoelectricity solution pure water ozone generator（8）；No.1 pump（3）Water inlet and blowoff line（1）On be respectively mounted filter（2）； Ozone incoming line（5）It is upper to be located at No. two water sprayers（6）With wastewater disinfection pond（9）Between part and the first pipeline（11）On It is respectively mounted check valve（7）；Wastewater disinfection pond（9）Upper setting sewage draining exit.
- 2. the special sewage sterilization system of dental clinic according to claim 1, it is characterised in that：Described sewage draining exit includes Manual blowdown mouth（17）With automatic pollution discharge mouth；Automatic pollution discharge mouth passes through the 3rd pipeline（16）Connect No. two pumps（13）Water inlet, 3rd pipeline（16）Upper installation drain filter（15）, No. two pumps（13）Delivery port be disinfecting sewage water outlet（14）, sewage disappears Malicious pond（9）Stop position liquid-level switch is inside installed from bottom to top（18）With open position liquid-level switch（19）, install on automatic pollution discharge mouth Control valve, control valve and each liquid-level switch are all connected with control system；Manual blowdown mouth（17）Upper installation valve.
- 3. the special sewage sterilization system of dental clinic according to claim 2, it is characterised in that：Described wastewater disinfection pond （9）Interior installation alarm bit liquid-level switch（20）, corresponding alarm bit liquid-level switch（20）Alarm, alarm bit liquid-level switch are installed （20）Control system is all connected with alarm.
- 4. the special sewage sterilization system of dental clinic according to Claims 2 or 3, it is characterised in that：Described sewage disappears Malicious pond（9）Top sets overfall（10）.
- 5. the special sewage sterilization system of dental clinic according to claim 1,2 or 3, it is characterised in that：Described spittoon Collector nozzle and dentistry motorized pumping systems（12）Between install spittoon sewage collector（22）, spittoon sewage collector（22）Installation In the lower section of spittoon collector nozzle, broad-mouthed receptacle for holding liquid sewage collector（22）Inside installation stops liquid-level switch from bottom to top（23）, open liquid level open Close（24）Switched with alarm liquid level（25）, corresponding alarm liquid level switch（25）Second alarm, spittoon sewage collector are installed （22）It is upper that spittoon outlet of sewer is set, magnetic valve is installed on spittoon outlet of sewer（26）, each liquid-level switch, the second alarm and electricity Magnet valve（26）It is all connected with control system.
- 6. the special sewage sterilization system of dental clinic according to claim 4, it is characterised in that：Described spittoon collector nozzle With dentistry motorized pumping systems（12）Between install spittoon sewage collector（22）, spittoon sewage collector（22）Installed in spittoon The lower section of collector nozzle, spittoon sewage collector（22）Inside installation stops liquid-level switch from bottom to top（23）, open liquid-level switch （24）Switched with alarm liquid level（25）, corresponding alarm liquid level switch（25）Second alarm, spittoon sewage collector are installed（22） It is upper that spittoon outlet of sewer is set, magnetic valve is installed on spittoon outlet of sewer（26）, each liquid-level switch, the second alarm and magnetic valve （26）It is all connected with control system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510505618.8A CN105060564B (en) | 2015-08-17 | 2015-08-17 | The special sewage sterilization system of dental clinic |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510505618.8A CN105060564B (en) | 2015-08-17 | 2015-08-17 | The special sewage sterilization system of dental clinic |
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| CN105060564A CN105060564A (en) | 2015-11-18 |
| CN105060564B true CN105060564B (en) | 2018-03-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109970234A (en) * | 2019-03-13 | 2019-07-05 | 泰山医学院 | A kind of chemical sewage recycling and processing device |
| CN110063868A (en) * | 2019-05-22 | 2019-07-30 | 四川博美星口腔设备有限公司 | Spittoon induction type drainage control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005270885A (en) * | 2004-03-25 | 2005-10-06 | Maezawa Ind Inc | Wastewater treatment apparatus |
| CN203307153U (en) * | 2013-06-20 | 2013-11-27 | 潍坊现代环境科技有限公司 | Sewage treatment equipment for medical outpatient service |
| CN203383272U (en) * | 2013-07-26 | 2014-01-08 | 四川大学 | Tap water jet water suction device-based water-saving energy-saving water closet device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102600744A (en) * | 2012-03-09 | 2012-07-25 | 鹤山市雷迅新农机械科技有限公司 | Automatic ozone circulation mixing device for pesticide-free crop virus killing |
| KR101488456B1 (en) * | 2013-03-20 | 2015-01-30 | 신은우 | Harmful substance treatment apparatus in water |
| CN203370070U (en) * | 2013-07-05 | 2014-01-01 | 梧州市红十字会医院 | Dental unit |
| CN204874137U (en) * | 2015-08-17 | 2015-12-16 | 山东宏润空压机科技有限公司 | Special sewage disinfection system of dentistry outpatient service |
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- 2015-08-17 CN CN201510505618.8A patent/CN105060564B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005270885A (en) * | 2004-03-25 | 2005-10-06 | Maezawa Ind Inc | Wastewater treatment apparatus |
| CN203307153U (en) * | 2013-06-20 | 2013-11-27 | 潍坊现代环境科技有限公司 | Sewage treatment equipment for medical outpatient service |
| CN203383272U (en) * | 2013-07-26 | 2014-01-08 | 四川大学 | Tap water jet water suction device-based water-saving energy-saving water closet device |
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