CN202421070U - Detecting unit for medical sewage - Google Patents
Detecting unit for medical sewage Download PDFInfo
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- CN202421070U CN202421070U CN2011205776218U CN201120577621U CN202421070U CN 202421070 U CN202421070 U CN 202421070U CN 2011205776218 U CN2011205776218 U CN 2011205776218U CN 201120577621 U CN201120577621 U CN 201120577621U CN 202421070 U CN202421070 U CN 202421070U
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Abstract
The utility model provides a detecting unit for medical sewage, which comprises an acquisition unit, a culture medium, and a measuring unit. The acquisition unit is used for acquiring medical sewage to be detected and delivering the medical sewage into a measuring tank of the measuring unit. The culture medium is applicable to bacterial flora to be detected in the medical sewage to be detected. The measuring unit comprises a light source and a detector, wherein the light source emits measuring light which irradiates into mixed liquor in the measuring tank, and the detector is used for converting optical signals from the mixed liquor of the culture medium and the medical sewage to be detected in the measuring tank into electrical signals, and transmitting the electrical signals to an analysis module. The electrical signals are related to detecting time. The detecting unit has the advantages of high denotativeness, short detecting time, high accuracy and the like.
Description
Technical field
The utility model relates to the detection of water, particularly the pick-up unit of medical waste water.
Background technology
Medical waste water is that daily discharge capacity is more; One of sewage that potential pathogenic harm is maximum contains pathogenic microorganisms such as a large amount of bacteriums, virus and parasite, and total number of bacteria reaches millions of to several ten million for every milliliter in the medical waste water mostly; Wherein every milliliter of sewage of coliform group count is mostly more than 200,000; The pathogenic entero becteria recall rate reaches 30%-100%, and hospital discharges the medical waste water that hundreds and thousands of tons contain the contaminative pathogen every day, these waste water such as the untimely treatment measures such as liquid chlorine sterilization, sodium hypochlorite sterilization or chlorinated lime sterilization of taking; Do not carry out effective microbiological indicator monitoring; After just getting into sewage treatment plant, can cause the serious decline of water quality, influence people's health through the municipal wastewater pipeline.Therefore; It is the primary goal of medical waste water control that the control medical waste water pollutes; Medical waste water emission standard (GB18466-2005) regulation that China formulates is one of main microorganism monitoring index with the excrement colibacillus group number; Criteria limit is no more than 500MPN/L for general practice mechanism, and infectious disease tuberculosis mechanism is no more than 100MPN/L.
Excrement colibacillus group means at 45 ℃ cultivates the Gram-negative sporeless bacterium that 24～48 hours ability lactose fermenterses produce sour aerogenesis; It is the bacterium that lives away from home in people and the various animal intestinal; Often discharge from humans and animals,, indicating the existence of pathogenic entero becteria in case detect then mean that water quality is contaminated with ight soil; Therefore be the monitoring of hygiene indicator bacteria of generally acknowledging both at home and abroad, particularly important in the monitoring of medical waste water microbiological indicator.The excrement colibacillus group standard detecting method of China's formulation at present comprises multitube fermentation method and filter membrane method; All adopt classical cultural method; Carry out quantitative test in conjunction with maximum possible counting (MPN) or microscope inspection; Not only complex steps, workload are big, and consuming time longer, need 24-72 hour can report the result.Though and the potable water zymolyte standard method of adopting in 2006 need not to prepare nutrient culture media, has simplified operation, also needed 24 hours just can draw testing result.Obviously, can cause so long detection time medical waste water quality monitoring to lag behind, possibly make non-sterile processing or the not good sewage of treatment effect enter external environment or municipal wastewater pipeline, and then threaten personal safety, produce serious consequence.
For satisfying the fast detecting demand of coliform, guarantee water quality safety, developed at present and the corresponding online monitoring instrument, like the colifast of Norway ColifastAS company, the Colilert3000 and the good bright JMS2009 in Qingdao of France's match ring.The special indicator enzyme that this quasi-instrument utilizes the coliform metabolism to produce, the corresponding luminous or chromogenic substrate of hydrolysis through the continuous light Hygienic monitoring on hands of childhood, carries out qualitative and quantitative analysis to coliform.Compare with classic method, on-line instrument can shorten detection time to 4-18 hour, was determined by initial coliform quantity its detection time, and initial bacterium amount is big more, and then detection time is short more.But; Above-mentioned water quality coliform on-line monitoring appearance is mainly used in monitoring water environment; The medical waste water application characteristic is considered not enough: above-mentioned instrument only can carry out the medical waste water quality evaluation through the final detection result of excrement colibacillus group, and does not possess sterilization whether early stage pre-judging method and function, and the waste water that causes non-sterile to be handled still needed several hours can draw assessment result; Thereby make medical waste water discharging in a large number between detection period, have a strong impact on environmental quality and health of human body.
The utility model content
In order to solve the deficiency in the above-mentioned prior art scheme, the medical waste water pick-up unit that the utility model provides a kind of anticipation of can sterilizing in early days, in time reported to the police.
The purpose of the utility model realizes through following technical scheme:
The pick-up unit of medical waste water, said pick-up unit comprises:
Collecting unit, said collecting unit is used to gather medical waste water to be measured, and is transported to the measuring cell in the measuring unit;
Nutrient culture media, said nutrient culture media are applicable to the flora to be measured in the medical waste water to be measured;
Measuring unit, said measuring unit comprises:
Light source, the measuring light that said light source sends are injected the mixed liquor in the measuring cell;
Detecting device, said detecting device are used for converting the light signal of the mixed liquor of medical waste water to be measured and nutrient culture media in the detected said measuring cell into electric signal, and are sent to analysis module, and said electric signal was associated with detection time;
Analysis module, said analysis module comprises following submodule:
Judge submodule, saidly judge that submodule is used for judging according to the variation tendency of said electric signal in the anticipation phase that receives whether medical waste water to be measured satisfies the sterilization requirement, and judged result is sent to calculating sub module;
Calculating sub module, said calculating sub module be used for when the judged result that receives when being, draw the concentration of flora to be measured in the medical waste water to be measured according to the said electric signal that receives.
According to above-mentioned pick-up unit, alternatively, corresponding detection time, flora initial concentration and the standard relationship of detection time obtained the concentration of medical waste water to be measured flora to be measured when said calculating sub module was used for arriving threshold value according to said electric signal.
According to above-mentioned pick-up unit, preferably, collecting unit comprises that pump, hyperchannel select to valve, and said medical waste water to be measured, nutrient culture media, measuring cell select the channel connection to valve with said hyperchannel respectively.
According to above-mentioned pick-up unit, alternatively, said pick-up unit further comprises:
Alarm, the input end connection judgment submodule of said alarm.
Compared with prior art, the beneficial effect that the utlity model has is:
1, according to the characteristic enzymic change trend of zymolyte method of real-time in medical waste water is used; Realize early stage sterilization anticipation function; Draw medical waste water sterilization situation within a short period of time; And indicate not disinfectant body quality dissatisfaction, and greatly shortened the microorganism evaluation time under this kind situation, help the timely monitoring and early warning of medical waste water;
2, testing circuit amplifies through adjustable gain, before and after the sterilization anticipation, carries out signal gain and regulates, and effectively solves the range difference problem of early stage anticipation and follow-up quantitative test, guarantees quantitative accuracy and accuracy.
3, same monitoring flow process realizes early stage sterilization anticipation and two functions of quantitatively analysing microorganism, need not extra operations such as manual analysis, saves resource.
Description of drawings
With reference to accompanying drawing, the disclosure of the utility model will be easier to understand.Those skilled in the art are understood that easily: these accompanying drawings only are used to illustrate the technical scheme of the utility model, and are not to be intended to the protection domain of the utility model is constituted restriction.Among the figure:
Fig. 1 is the basic block diagram according to the pick-up unit of embodiment 1;
Fig. 2 is the process flow diagram according to the detection method of embodiment 1;
Fig. 3 is according to the fluorescence intensity of the concentration known flora of embodiment 1 and the corresponding relation synoptic diagram of detection time;
Fig. 4 is according to the flora initial concentration of embodiment 1 and the standard relationship synoptic diagram of detection time;
Fig. 5 is the basic block diagram according to the pick-up unit of embodiment 2.
Embodiment
Fig. 1-5 and following declarative description the optional embodiment of the utility model how to implement with instruction those skilled in the art and reproduce the utility model.In order to instruct the utility model technical scheme, simplified or omitted some conventional aspects.Those skilled in the art should understand that the modification or the replacement that are derived from these embodiments will be in the scopes of the utility model.Those skilled in the art should understand that following characteristics can make up to form a plurality of modification of the utility model in every way.Thus, the utility model is not limited to following optional embodiment, and is only limited claim and their equivalent.
Embodiment 1:
Fig. 1 has schematically provided the basic block diagram of pick-up unit of the medical waste water of the utility model embodiment.As shown in Figure 1, said pick-up unit comprises:
Collecting unit, said collecting unit is used to gather medical waste water to be measured, and is transported to the measuring cell in the measuring unit; Said collecting unit both can adopt manual type, also can adopt the mode of robotization, as adopting syringe pump etc. quantitative medical waste water water sample to be measured was extracted in the measuring cell.Preferred following mode:
Collecting unit comprises that pump, hyperchannel select to valve, and said medical waste water to be measured, nutrient culture media, measuring cell select the channel connection to valve with said hyperchannel respectively.
Nutrient culture media, said nutrient culture media are applicable to the flora to be measured in the medical waste water to be measured, so that the metabolism under the environment of said nutrient culture media of said flora to be measured, and metabolic product supplies follow-up measuring unit to detect;
Measuring unit, said measuring unit comprises:
Light source, the measuring light that said light source sends are injected the mixed liquor in the measuring cell, so that measuring light excites the metabolic product of flora to be measured, thereby produce fluorescence; Said light source can adopt laser instrument, LED.
Detecting device, said detecting device are used for converting the light signal of the mixed liquor of medical waste water to be measured and nutrient culture media in the detected said measuring cell into electric signal, and are sent to analysis module, and said electric signal was associated with detection time; Said detecting device adopts photoelectric detector, receives said fluorescence and converts electric signal into;
Analysis module, said analysis module comprises following submodule:
Judge submodule, saidly judge that submodule is used for judging according to the variation tendency of said electric signal in the anticipation phase that receives whether medical waste water to be measured satisfies the sterilization requirement, and judged result is sent to calculating sub module;
There is a period of delay in cultivation in nutrient culture media for flora to be measured, is in [0.5 hour, 2.5 hours] this period of delay, can a little variation be arranged with the type difference of flora to be measured certainly.Can with said period of delay as the anticipation phase, if medical waste water to be measured satisfies the sterilization requirement, then said light signal is steady state value basically in the anticipation phase; If do not satisfy the sterilization requirement, then said light signal in the anticipation phase to big rate of change is arranged detection time; It is thus clear that, can judge that whether medical waste water to be measured satisfies the sterilization requirement through the threshold value that said rate of change is set, threshold value confirms according to concrete flora to be measured and the accuracy of detection desiring to reach, as: accuracy of detection is high more, and said threshold value is more little;
Calculating sub module, said calculating sub module be used for when the judged result that receives when being, draw the concentration of flora to be measured in the medical waste water to be measured according to the said electric signal that receives.
When judged result when being, show that this moment, medical waste water to be measured satisfied the sterilization requirement, also need detect the concentration of flora to be measured.Concrete detection mode is: corresponding detection time, flora initial concentration and the standard relationship of detection time obtains the concentration of flora to be measured in the medical waste water to be measured when arriving threshold value (being same as electric signal threshold value selected in setting up the standard relationship process) according to said electric signal.
Alternatively, said pick-up unit further comprises: it is that prompting is reported to the police when denying that alarm, said alarm are used for when receiving said judged result, like sound, light, electric alarm.
Fig. 2 has schematically provided the process flow diagram of the medical waste water detection method of present embodiment.As shown in Figure 2, said detection method may further comprise the steps:
(A1) gather medical waste water to be measured, and nutrient culture media is joined in the said medical waste water to be measured, the flora to be measured in the medical waste water to be measured has metabolism, produces metabolic product;
(A2) light that sends of light source is injected the mixed liquor of said medical waste water to be measured and nutrient culture media; Excite said metabolic product; Thereby generation fluorescence; The fluorescence signal of the said mixed liquor that detecting device will receive converts electric signal into, and is sent to judgement submodule and calculating sub module, and said electric signal is corresponding to detection time;
(A3) analysis module judges according to the variation tendency of said electric signal in the anticipation phase that receives whether said medical waste water to be measured satisfies the sterilization requirement, and judged result is sent to calculating sub module;
There is a period of delay in cultivation in nutrient culture media for flora to be measured, is in [0.5 hour, 2.5 hours] this period of delay, can a little variation be arranged with the type difference of flora to be measured certainly.Can with said period of delay as the anticipation phase, if medical waste water to be measured satisfies the sterilization requirement, then said light signal is steady state value basically in the anticipation phase; If do not satisfy the sterilization requirement, then said light signal in the anticipation phase to big rate of change is arranged detection time; It is thus clear that, can judge that whether medical waste water to be measured satisfies the sterilization requirement through the threshold value that said rate of change is set, threshold value confirms according to concrete flora to be measured and the accuracy of detection desiring to reach, as: accuracy of detection is high more, and said threshold value is more little;
Alternatively, when said judged result for not the time, the prompting alarm equipment alarm is like sound, light, electric alarm.
(A4) calculating sub module according to when the said judged result that receives when being, draw the concentration of flora to be measured in the said medical waste water to be measured according to the said electric signal that receives.
When judged result when being, show that this moment, medical waste water to be measured satisfied the sterilization requirement, also need detect the concentration of flora to be measured.Concrete detection mode is: corresponding detection time, flora initial concentration and the standard relationship of detection time obtains the concentration of flora to be measured in the medical waste water to be measured when arriving threshold value (being same as electric signal threshold value selected in setting up the standard relationship process) according to said electric signal.If said electric signal does not reach said threshold value, the concentration of said flora to be measured is lower than the setting response or is zero.
Alternatively, the mode of setting up of said standard relationship is:
Select the known flora of different initial concentrations, and in nutrient culture media, cultivate; The metabolic product of the said known flora of the optical excitation that light source sends in nutrient culture media, thus fluorescence sent, and detecting device receives said fluorescence signal, thereby sets up the corresponding relation of fluorescence signal and detection time.Set the threshold value of light signal, write down the detection time that reaches this threshold value correspondence when the light signal of each flora, as shown in Figure 3, thus set up the initial concentration standard relationship corresponding with detection time, as shown in Figure 4.
The benefit that reaches according to embodiment 1 is: according to the variation of flora to be measured signal of metabolic product in nutrient culture media in the medical waste water to be measured; Go the anticipation medical waste water whether to satisfy the sterilization requirement; And the prompting warning, under the situation that anticipation, warning function are provided, shortened detection time again.
Embodiment 2:
Pick-up unit and the application examples of method in fecal coliform detects according to embodiment 1.
Fig. 5 has schematically provided the structural drawing of the pick-up unit of the utility model embodiment.As shown in Figure 5, collecting unit comprises that the hyperchannel choosing is to valve 4, syringe pump 2, liquid storage ring 3.Said hyperchannel choosing has a plurality of passages to valve 4; Connect medical waste water to be measured (through sampling pipe 9), nutrient culture media, measuring cell 6, waste liquid pool, cleaning liquid pool and atmosphere respectively; And public passage connects liquid storage ring 3, so that optionally quantitative medical waste water to be measured, nutrient culture media, gas are sent into said measuring cell 6.
Above-mentioned detection device is when work (corresponding to detection method), and process is:
(A1) hyperchannel choosing is to the valve SELCH, and syringe pump extracts the medical waste water to be measured of certain volume, and is temporarily stored in the liquid storage ring, and the hyperchannel choosing is to valve SELCH again, thereby the medical waste water to be measured that will keep in is sent into measuring cell; In like manner, nutrient culture media, the air of certain volume are sent into said measuring cell, wherein when sending into air, stirred medical waste water to be measured and the nutrient culture media before sent into, help the abundant mixing of the two, guarantee the amount of oxygen that bacterial growth is required simultaneously;
Excrement colibacillus group in the measuring cell is metabolism in nutrient culture media; Produce metabolic product β-D-glucuronidase; Specific reaction takes place in the reaction substrate 4-methyl umbelliferone-β in this enzyme and the nutrient solution-D glucosiduronate (MUG), produces fluorescent material 4-methyl umbelliferone (4-MU);
(A2) light that sends of light source is injected the mixed liquor in the measuring cell, and the fluorescence excitation material sends fluorescence, and detecting device receives said fluorescence, and converts (corresponding to detection time) electric signal into, is sent to and judges submodule and calculating sub module;
(A3) judge whether submodule surpasses threshold value (5unit) according to the said electric signal that receives rate of change to detection time in the anticipation phase (2 hours); In the present embodiment, said electric signal is a constant in the anticipation phase, does not surpass threshold value; Therefore can know that medical waste water to be measured satisfies sterilization and requires (if do not satisfy; Judged result is sent to audible-visual annunciator, and prompting is reported to the police), and judged result is sent to calculating sub module;
Corresponding detection time, excrement colibacillus group initial concentration and the standard relationship of detection time obtained the concentration (if said electric signal does not reach said threshold value, the concentration of excrement colibacillus group is zero) of excrement colibacillus group in the medical waste water to be measured when (A4) calculating sub module arrived threshold value (being same as electric signal threshold value selected in setting up the standard relationship process) according to the said electric signal that receives.
The benefit that reaches according to embodiment 2 is: only need 2 hours even shorter time, just can whether satisfy the sterilization requirement by anticipation water sample to be measured, and the detection time of follow-up flora be 14 hours, than bigger shortening is arranged detection time needed in the art.
Exemplarily provided the situation of fecal coliform in the medical waste water to be measured in the foregoing description; Certainly can also be other flora; As: total coli group, Escherichia coli and staphylococcus etc.; Measuring principle is same as the previously described embodiments, and embodiment is to understand easily for a person skilled in the art, and on the foregoing description basis, need not pay creative work and can obtain.
Claims (3)
1. the pick-up unit of medical waste water, said pick-up unit comprises: collecting unit, nutrient culture media, measuring unit and analysis module; It is characterized in that:
Said collecting unit is used to gather medical waste water to be measured, and is transported to the measuring cell in the measuring unit;
Said nutrient culture media is applicable to the flora to be measured in the medical waste water to be measured;
Said measuring unit comprises:
Light source, the measuring light that said light source sends are injected the mixed liquor in the measuring cell;
Detecting device, said detecting device are used for converting the light signal of the mixed liquor of medical waste water to be measured and nutrient culture media in the detected said measuring cell into electric signal, and are sent to analysis module, and said electric signal was associated with detection time;
Said analysis module comprises following submodule:
Judge submodule, saidly judge that submodule is used for judging according to the variation tendency of said electric signal in the anticipation phase that receives whether medical waste water to be measured satisfies the sterilization requirement, and judged result is sent to calculating sub module;
Calculating sub module, said calculating sub module be used for when the judged result that receives when being, draw the concentration of flora to be measured in the medical waste water to be measured according to the said electric signal that receives.
2. pick-up unit according to claim 1 is characterized in that: collecting unit comprises that pump, hyperchannel select to valve, and said medical waste water to be measured, nutrient culture media, measuring cell are communicated with said valve passage respectively.
3. pick-up unit according to claim 1 is characterized in that: said pick-up unit further comprises:
Alarm, the input end of said alarm connects the interpretation submodule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205776218U CN202421070U (en) | 2011-12-31 | 2011-12-31 | Detecting unit for medical sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205776218U CN202421070U (en) | 2011-12-31 | 2011-12-31 | Detecting unit for medical sewage |
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| Publication Number | Publication Date |
|---|---|
| CN202421070U true CN202421070U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205776218U Expired - Fee Related CN202421070U (en) | 2011-12-31 | 2011-12-31 | Detecting unit for medical sewage |
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| CN (1) | CN202421070U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565017A (en) * | 2011-12-31 | 2012-07-11 | 聚光科技(杭州)股份有限公司 | Device and method for detecting medical wastewater |
| CN105176803A (en) * | 2015-10-09 | 2015-12-23 | 浙江省海洋水产研究所 | Portable microbial limit detector for seafood |
-
2011
- 2011-12-31 CN CN2011205776218U patent/CN202421070U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565017A (en) * | 2011-12-31 | 2012-07-11 | 聚光科技(杭州)股份有限公司 | Device and method for detecting medical wastewater |
| CN105176803A (en) * | 2015-10-09 | 2015-12-23 | 浙江省海洋水产研究所 | Portable microbial limit detector for seafood |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20141231 |
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| EXPY | Termination of patent right or utility model |