CN102879296A - Simulated measurement and calculation device and method for exhaust gas emission in urban sewerage system - Google Patents
Simulated measurement and calculation device and method for exhaust gas emission in urban sewerage system Download PDFInfo
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- CN102879296A CN102879296A CN2012103901640A CN201210390164A CN102879296A CN 102879296 A CN102879296 A CN 102879296A CN 2012103901640 A CN2012103901640 A CN 2012103901640A CN 201210390164 A CN201210390164 A CN 201210390164A CN 102879296 A CN102879296 A CN 102879296A
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Abstract
The invention discloses a simulated measurement and calculation device and method for exhaust gas emission in an urban sewerage system. The device comprises a nitrogen gas cylinder, a reactor, a gas collection tank and a gas detector, wherein the nitrogen gas cylinder is respectively communicated with the bottom of the reactor and the bottom of the gas collection tank; the reactor is connected with the gas collection tank; the gas collection tank is connected with the gas detector; and the top of the reactor is sealed. The simulated measurement and calculation device for the exhaust gas emission in the urban sewerage system is easy and convenient to operate and can simulate the anaerobic degradation process of sewage in a drainage system and measure and calculate the sewage and exhaust gas emission in the urban sewerage system.
Description
Technical field
The invention belongs to field of Environment Protection, be specifically related to a kind of apparatus and method of waste gas monitoring, particularly the simulation of discharge amount of exhaust gas measuring and calculating device and measuring method in a kind of municipal effluent unwatering system.
Background technology
The process that in the process that long-time in drainage pipeline, the long distance of municipal effluent is carried is the lasting degraded of organism also is the process that waste gas produces in the municipal effluent unwatering system.Organic anaerobism or aerobic biodegradation all can produce greenhouse gases CO
2In the sewer of anaerobism, the sewage that contains prot th is decomposed generation H by sulphate reducing bacteria (SRB)
2S gas, H
2S not only can corrode sewer line facility or other sewage disposal devices, also can produce stench.Other organism under anaerobic produce CH through methanobacteria and ammonifiers effect meeting in the sewage
4, NH
3Deng gas, these gases very easily set off an explosion, produce stench, CH when long-term accumulation reaches critical concentration in sewer
4The explosion limits of gas is 5%.In the organic matter decomposition process, also can produce simultaneously some volatile organic gas such as hydrocarbon, oxygen-containing hydrocarbon class etc.
The lot of domestic and international scholar has carried out large quantity research to anaerobic degradation gas generation process, mechanism and the control technology of municipal effluent unwatering system sewage at present, and control technology research mainly concentrates on by H in chemistry or the biotechnology control municipal effluent unwatering system
2S or CH
4Generation Deng harmful gas.And to feature waste gas such as H in the sewerage system
2S, CH
4, CO
2, NH
3Emission behaviour research very few.Sewerage system not only exists water to pollute, and simultaneously, the acid waste gas that sewerage system produces corrodes sewer line facility and sewage transport, treatment facility on the one hand, shortens its serviceable life, causes serious economic loss; The on the other hand blast in the operation and maintenance process or the poisoning casualty accident happens occasionally; Moreover some greenhouse gases such as CH
4, CO
2Be diffused in the air by semiclosed nodes such as inspection chambers, increase the greenhouse gases contribution, simultaneously city atmospheric environment quality and the health that affects the city dweller are impacted.
But, at present spill into research in the urban air or blank for sewer gas.Simultaneously, sewer belongs to hemi-closure space, and for the mensuration that wherein is diffused into the exhausted air quantity in the atmosphere, the method that there is no at present standard can adopt.
Summary of the invention
In order to fill up the blank of prior art, primary and foremost purpose of the present invention is to provide the simulation measuring and calculating device of discharge amount of exhaust gas in a kind of municipal effluent unwatering system.
Another object of the present invention is to provide the measuring method of discharge amount of exhaust gas in a kind of municipal effluent unwatering system.
Purpose of the present invention is achieved through the following technical solutions:
The simulation of discharge amount of exhaust gas measuring and calculating device comprises nitrogen cylinder, reactor, gas collection tank and gas detecting instrument in a kind of municipal effluent unwatering system; Nitrogen cylinder is communicated to respectively reactor bottom and gas holding tank bottom, the proportion of nitrogen is larger than air, it is for the air in the front-seat Empty reactor of reaction beginning that nitrogen cylinder is communicated to reactor bottom, to simulate better the anaerobic environment of sewer, it then is for evacuation of air before collecting waste gas to be measured, in order to avoid disturb the detection of waste gas to be measured that nitrogen cylinder is communicated to the gas collection pot bottom; Reactor is connected with the gas collection tank, the gas collection tank is connected with gas detecting instrument; Reactor head sealing, sealing are in order to guarantee the impermeability of reactor, with the accuracy that improves testing result with simulate better anaerobic environment;
Reactor head can seal with plastic foam, can add ballast on the plastic foam, to guarantee sealing;
Stirrer also is housed in the reactor, reacted waste gas can fully be discharged;
Reactor bottom is equipped with thermostat, with the isoperibol of simulation sewer;
Described gas collection tank also is connected with exhaust gas processing device, to absorb toxic and harmful;
Described gas detecting instrument is the public instrument of prior art, such as being the many gas detecting instruments of the portable sewer of U.S. iBiRDMX6.
Each connecting tube is provided with valve.
A kind of method of the measuring and calculating discharge amount of exhaust gas based on said apparatus may further comprise the steps:
(1) then pack in the reactor potpourri of sewage and mud passes into nitrogen, the air in the emptying reactor in reactor; In the gas collection tank, pass into nitrogen, emptying air wherein;
(2) sewage and mud react after the temperature of setting thermostat, open stirrer behind reaction 30 ~ 50min, stir 5 ~ 10min; Then open valve, the waste gas that produces in the reactor is passed into the gas collection tank, and duration of ventilation is 5 ~ 10min, then uses the concentration of gas detecting instrument detected characteristics waste gas; Described feature waste gas is H
2S, NH
3, CH
4And CO
2
(3) come the discharge amount of exhaust gas of the potpourri of the sewage of unit of account volume and mud according to the volume of the feature exhaust gas concentration that detects and gas holding tank;
Repeating step (2) detects a feature exhaust gas concentration every 1h;
The potpourri of the described sewage of step (1) and mud accounts for more than 2/3rds of reactor volume;
Mud accounts for 5 ~ 10%(volume ratio in the potpourri of the described sewage of step (1) and mud);
The Temperature Setting of the described thermostat of step (2) is 15 ~ 30 ℃.
The present invention has following advantage and effect with respect to prior art:
Apparatus and method of the present invention are applicable to the measuring and calculating of discharge amount of exhaust gas in the municipal effluent unwatering system, this device is simple, easy to operate, the anaerobic degradation process of sewage in unwatering system can not only be simulated, the discharge capacity of sewage waste gas in the sewerage system can also be calculated.
Description of drawings
Fig. 1 is the structural representation of the measuring and calculating device of discharge amount of exhaust gas in the municipal effluent unwatering system of the present invention;
Wherein, 1-nitrogen cylinder, 2-spinner-type flowmeter, 3-valve, 4-counterweight, 5-stirrer, 6-plastic foam, 7-organic glass reactor, 8-thermostat, 9-connecting tube, 10-gas detecting instrument, 11-exhaust gas processing device, 12-gas collection tank.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
The simulation of discharge amount of exhaust gas measuring and calculating device in a kind of municipal effluent unwatering system, its structure and composition comprises nitrogen cylinder 1, organic glass reactor 7, gas collection tank 12, gas detecting instrument 10 and exhaust gas processing device 11 as shown in Figure 1; Nitrogen cylinder 1 is communicated to respectively organic glass reactor 7 bottoms and gas holding tank 12 bottoms; Organic glass reactor 7 is connected with gas collection tank 12, and gas collection tank 12 is connected with exhaust gas processing device with gas detecting instrument 10 respectively and is connected;
The exit of nitrogen cylinder 1 is equipped with spinner-type flowmeter 2, with the control nitrogen flow rate;
Organic glass reactor 7 tops are with plastic foam 6 sealing, can compression weight 4 on the plastic foam 6; Stirrer 5 and thermostat 8 also are housed in the organic glass reactor 7;
Gas detecting instrument is the many gas detecting instruments of the portable sewer of U.S. iBiRD MX6, and this gas detecting instrument can be monitored O simultaneously
2, NH
3, H
2S, CH
4And CO
2
A kind of method of the measuring and calculating discharge amount of exhaust gas based on embodiment 1 described device may further comprise the steps:
(1) sampling: in the inspection chamber of main drainage pipeline, getting sewage and mud take resident living sewage;
(2) pack in the organic glass reactor 7 potpourri of sewage and mud, the potpourri of sewage and mud accounts for 2/3rds of reactor volume; Then in organic glass reactor 7, pass into nitrogen, the air in the emptying organic glass reactor 7; In gas collection tank 12, pass into nitrogen, emptying air wherein;
Mud accounts for the 5%(volume ratio in the potpourri of described sewage and mud);
(3) the rear sewage of temperature (20 ℃) and the mud of setting thermostat 8 react, and open stirrer 5 behind the reaction 50min, stir 10min; Then open valve, the waste gas of organic glass reactor 7 interior generations is passed into gas collection tank 12, and duration of ventilation is 10min, then uses the concentration of gas detecting instrument 10 detected characteristics waste gas; Described feature waste gas is H
2S, NH
3, CH
4And CO
2
(4) volume by the feature exhaust gas concentration that detects and gas holding tank 12 comes the discharge amount of exhaust gas of the potpourri of the sewage of unit of account volume and mud;
Repeating step (3) detects a feature exhaust gas concentration every 1h.
In simulation test procedure, H
2S, NH
3, CH
4And CO
2The concentration of emission of four kinds of feature waste gas is monitored out by gas detecting instrument, and the computing formula of the discharge amount of exhaust gas of the sewage of unit volume and the potpourri of mud is as follows:
Volume (the V of the mass concentration (C) of discharge capacity (E)=feature waste gas * gas collection tank volume (V)/sewage and mud mixture
0)
E—g/m
3·h C—g/m
3 V
0—m
3
The discharge amount of exhaust gas of the sewage of unit volume and the potpourri of mud is as shown in table 1.
The discharge capacity of table 1 feature waste gas
Remarks: in whole process of the test, do not monitor NH
3
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1. the simulation of discharge amount of exhaust gas measuring and calculating device in the municipal effluent unwatering system, it is characterized in that: comprise nitrogen cylinder, reactor, gas collection tank and gas detecting instrument, nitrogen cylinder is communicated to respectively reactor bottom and gas holding tank bottom, reactor is connected with the gas collection tank, the gas collection tank is connected with gas detecting instrument, the reactor head sealing;
Described reactor bottom is equipped with thermostat.
2. device is calculated in the simulation of discharge amount of exhaust gas in the municipal effluent unwatering system according to claim 1, and it is characterized in that: reactor head seals with plastic foam, adds ballast on the plastic foam.
3. the simulation of discharge amount of exhaust gas measuring and calculating device in the municipal effluent unwatering system according to claim 1 is characterized in that: in the described reactor stirrer is housed.
4. device is calculated in the simulation of discharge amount of exhaust gas in the municipal effluent unwatering system according to claim 1, and it is characterized in that: described gas collection tank is connected with exhaust gas processing device.
5. device is calculated in the simulation of discharge amount of exhaust gas in the municipal effluent unwatering system according to claim 1, and it is characterized in that: each connecting tube is provided with valve.
6. method based on the measuring and calculating discharge amount of exhaust gas of each described device of claim 1-5 is characterized in that may further comprise the steps:
(1) then pack in the reactor potpourri of sewage and mud passes into nitrogen, the air in the emptying reactor in reactor; In the gas collection tank, pass into nitrogen, emptying air wherein;
(2) sewage and mud react after the temperature of setting thermostat, open stirrer behind reaction 30 ~ 50min, stir 5 ~ 10min; Then open valve, the waste gas that produces in the reactor is passed into the gas collection tank, and duration of ventilation is 5 ~ 10min, then uses the concentration of gas detecting instrument detected characteristics waste gas; Described feature waste gas is H
2S, NH
3, CH
4And CO
2
(3) come the discharge amount of exhaust gas of the potpourri of unit of account volume sewage and mud by the volume of the feature exhaust gas concentration that detects and gas holding tank;
Repeating step (2) detects a feature exhaust gas concentration every 1h.
7. the method for measuring and calculating discharge amount of exhaust gas according to claim 6, it is characterized in that: the potpourri of the described sewage of step (1) and mud accounts for more than 2/3rds of reactor volume.
8. the method for measuring and calculating discharge amount of exhaust gas according to claim 6, it is characterized in that: the percent by volume of mud accounts for 5 ~ 10% in the potpourri of the described sewage of step (1) and mud.
9. the method for measuring and calculating discharge amount of exhaust gas according to claim 6, it is characterized in that: the Temperature Setting of the described thermostat of step (2) is 15 ~ 30 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103901640A CN102879296A (en) | 2012-10-15 | 2012-10-15 | Simulated measurement and calculation device and method for exhaust gas emission in urban sewerage system |
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|---|---|---|---|
| CN2012103901640A CN102879296A (en) | 2012-10-15 | 2012-10-15 | Simulated measurement and calculation device and method for exhaust gas emission in urban sewerage system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301198A (en) * | 2015-11-11 | 2016-02-03 | 中国科学院武汉岩土力学研究所 | Anaerobic digestion gas automatic detection system |
| CN106950082A (en) * | 2017-04-27 | 2017-07-14 | 河北工业大学 | A kind of oil pollution marine site sampler |
| CN108444536A (en) * | 2018-05-16 | 2018-08-24 | 浙江大学 | The measurement device and method of portable refuse landfill sulfurous gas discharge capacity |
| CN111808739A (en) * | 2020-04-12 | 2020-10-23 | 中国科学院武汉植物园 | Anaerobic bottle quantitative isobaric oxygen removal device and method for biological culture |
| CN112816267A (en) * | 2021-01-26 | 2021-05-18 | 北京工业大学 | Collection and measuring device for anaerobic stabilization sludge release VSCs gas |
| CN113281480A (en) * | 2021-05-13 | 2021-08-20 | 吴迅海 | Device for measuring carbon emission of sewage and statistical method for carbon emission of sewage |
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| JPS54143196A (en) * | 1978-04-28 | 1979-11-08 | Hitachi Ltd | Dissolved oxygen concentration determination |
| CN1618980A (en) * | 2003-11-17 | 2005-05-25 | 中国科学院生态环境研究中心 | Method and device for making hydrogen using sewage plant residual mud to produce anaerobic fermentation |
| CN201368838Y (en) * | 2008-12-25 | 2009-12-23 | 张少岩 | Gas collecting and metering system |
-
2012
- 2012-10-15 CN CN2012103901640A patent/CN102879296A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54143196A (en) * | 1978-04-28 | 1979-11-08 | Hitachi Ltd | Dissolved oxygen concentration determination |
| CN1618980A (en) * | 2003-11-17 | 2005-05-25 | 中国科学院生态环境研究中心 | Method and device for making hydrogen using sewage plant residual mud to produce anaerobic fermentation |
| CN201368838Y (en) * | 2008-12-25 | 2009-12-23 | 张少岩 | Gas collecting and metering system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301198A (en) * | 2015-11-11 | 2016-02-03 | 中国科学院武汉岩土力学研究所 | Anaerobic digestion gas automatic detection system |
| CN106950082A (en) * | 2017-04-27 | 2017-07-14 | 河北工业大学 | A kind of oil pollution marine site sampler |
| CN106950082B (en) * | 2017-04-27 | 2024-02-02 | 河北工业大学 | Petroleum pollution sea area sampling device |
| CN108444536A (en) * | 2018-05-16 | 2018-08-24 | 浙江大学 | The measurement device and method of portable refuse landfill sulfurous gas discharge capacity |
| CN108444536B (en) * | 2018-05-16 | 2024-02-13 | 浙江大学 | Device and method for measuring sulfur-containing gas emission of portable refuse landfill |
| CN111808739A (en) * | 2020-04-12 | 2020-10-23 | 中国科学院武汉植物园 | Anaerobic bottle quantitative isobaric oxygen removal device and method for biological culture |
| CN112816267A (en) * | 2021-01-26 | 2021-05-18 | 北京工业大学 | Collection and measuring device for anaerobic stabilization sludge release VSCs gas |
| CN113281480A (en) * | 2021-05-13 | 2021-08-20 | 吴迅海 | Device for measuring carbon emission of sewage and statistical method for carbon emission of sewage |
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Application publication date: 20130116 |