CN203894212U - Simulation device for monitoring generation of nitrous oxide in aerobic biological treatment process of sewage - Google Patents
Simulation device for monitoring generation of nitrous oxide in aerobic biological treatment process of sewage Download PDFInfo
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- CN203894212U CN203894212U CN201420262339.4U CN201420262339U CN203894212U CN 203894212 U CN203894212 U CN 203894212U CN 201420262339 U CN201420262339 U CN 201420262339U CN 203894212 U CN203894212 U CN 203894212U
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- sewage
- nitrous oxide
- control system
- retort
- monitoring
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Abstract
The utility model discloses a simulation device for monitoring the generation of nitrous oxide in an aerobic biological treatment process of sewage. According to the key points of the technical scheme, the simulation device comprises a reaction tank and a sealing cover arranged on the reaction tank, wherein the sealing cover is provided with a sample injection hole and a gas sampling hole; the gas sampling hole is connected with a gaseous nitrous oxide monitoring system; the reaction tank is internally provided with a dissolved-state nitrous oxide monitoring system, a dissolved oxygen control system, a pH control system and a temperature control system. The simulation device can be used for monitoring the generation of N2O in the aerobic biological treatment process of the sewage, and is capable of accurately measuring the yield and the change rule of N2O in the reaction, thus being suitable for the research of influence of environmental conditions such as pollutant load, dissolved oxygen, pH value and temperature on the generation of N2O in the aerobic biological treatment process of the sewage.
Description
Technical field
The utility model relates to a kind of sewage aerobic biological treatment analogue means, is specifically related to a kind of analogue means that in sewage aerobic biological treatment process, nitrous oxide produces of monitoring.
Background technology
Along with the development of human economy and social progress, the greenhouse effect in global range strengthen gradually.N
2o is a kind of heat-flash greenhouse gases, and its 100 years global warming potential are CO
2296 times, N
2o has reached 5-6% to the contribution of global atmosphere greenhouse effect, and burst size is with annual 3% speed increment.Some researchs show, N
2o results from the processing procedure of municipal effluent in a large number, mainly produces nitrifying process and denitrification process that link is bio-denitrifying sewage.The object of wastewater treatment is the pollutant of removing in environment, but the greenhouse gases that discharge in its operational process have aggravated environmental pressure, have run counter to the original intention that people carry out wastewater treatment.Under the international environment being day by day restricted in carbon emission, the collection of carbon tax will be inevitable, the greenhouse gases that in the future produce in sewage disposal process are very likely implemented discharge charge, and the discharge that how to reduce greenhouse gases has become the new problem that sewage treatment industry need to be faced.Therefore, N in clear understanding sewage disposal process
2the crucial prerequisite that the influence factor that O produces and the mechanism of action become reduction of greenhouse gas discharge.
Existing multidigit scholar discovery, the aerobic process in biological wastewater treatment process is N
2the main workshop section that O discharges, and in this process, the TN of sewage, NH
4 +-N, NO
3 --N and NO
2 --N concentration, and dissolved oxygen DO, pH and temperature all can be to N
2the generation of O exerts an influence.In Er actual sewage treatment plant, due to circumstance complication, the uncontrollability of numerous conditions, analyzes N by the investigation of actual sewage processing procedure
2the influence condition that O produces and its mechanism of production are also infeasible.Therefore, need a kind of influent quality and environmental baseline controlled, and can be to N
2o produces the experimental simulation device of implementing accurately to monitor this problem is studied.Suitable experimental simulation device not only can promote N
2o produces the understanding of condition and mechanism of production, can also improve precision and the efficiency of research.But also do not have at present a kind ofly specially for sewage aerobic biological treatment process, can reach the experimental simulation device of above-mentioned requirements.Therefore, design a kind of can on-line monitoring N
2the sewage aerobic biological treatment analogue means that O produces, to different pollutant burdens and environmental baseline in understanding sewage aerobic biological treatment process to N
2the impact that O produces and understanding N
2the mechanism of production of O is significant.
Summary of the invention
The technical matters that the utility model solves has been to provide a kind of analogue means that in sewage aerobic biological treatment process, nitrous oxide produces of monitoring, this device can be monitored the concentration of solubilised state and gaseous state nitrous oxide in sewage aerobic biological treatment simultaneously, and can simulate different running environment as dissolved oxygen DO, pH value and temperature etc., can be used for studying pollutional load and the mechanism of production of environmental baseline to nitrous oxide in sewage aerobic biological treatment process.
The technical solution of the utility model is: the analogue means that in monitoring sewage aerobic biological treatment process, nitrous oxide produces, comprise retort and be arranged at the gland bonnet in retort, it is characterized in that: described gland bonnet is provided with injection port and gas sampling mouth, wherein injection port is used for adding sewage and active sludge, gas sampling mouth is connected with the sub-nitrogen monitoring system of gaseous oxidation, the sub-nitrogen monitoring system of this gaseous oxidation is mainly comprised of gas chromatography and connecting tube, in described retort, be provided with solubilised state nitrous oxide monitoring system, dissolved oxygen DO control system, pH control system and temperature control system, wherein solubilised state nitrous oxide monitoring system is mainly comprised of nitrous oxide electrode and nitrous oxide monitor, by the concentration of solubilised state nitrous oxide in nitrous oxide electrode on-line monitoring sewage, dissolved oxygen DO control system is mainly by dissolved oxygen control instrument, dissolved oxygen probe, air pump, gas-flow rate controller and aeration head form, by controlling air pump aeration rate, regulate the dissolved oxygen concentration of sewage in retort, pH control system is mainly by pH controller, pH electrode and soda acid storage tank form, by control, add the pH value that acid or alkali regulate sewage in retort, temperature control system is mainly by temp probe, temperature controller and well heater form, for regulating the temperature of retort sewage, be 10-40 ℃, the bottom of described retort is provided with liquid sample mouth, collection for fluid sample.
Acid in pH control system described in the utility model is the hydrochloric acid of volumetric molar concentration 6-10mol/L, and alkali is the sodium hydroxide solution of volumetric molar concentration 6-10mol/L.
Retort described in the utility model is designed to right cylinder, square or rectangular parallelepiped, for sewage is mixed with active sludge, is preferably right cylinder.
Method of operating of the present utility model is: from injection port, add retort after mixing with fresh active sludge by actual waste water or human configuration are useless, sludge concentration maintains 2000-3000mg/L, by dissolved oxygen DO control system, pH control system and temperature control system, regulate dissolved oxygen DO, pH value and the temperature of mud mixture in retort, sewage in retort and active sludge are even by aeration agitation, respectively by solubilised state N
2o monitoring system and gaseous state N
2solubilised state N in O monitoring system monitoring sewage
2the gaseous state N of O and loss
2o concentration, in course of reaction regularly from liquid sample mouth collection liquid sample, the chemical analysis of be correlated with, the reaction time can proper extension or shortening according to actual experiment needs, is generally 2-5h.
The utility model compared with prior art has following beneficial effect: (1) passes through N
2o monitoring system precise monitoring sewage aerobic biological treatment process N
2generation feature and the generation of O, comprise solubilised state N
2o and gaseous state N
2o; (2), by dissolved oxygen DO control system, pH control system and the adjusting of temperature control system to dissolution of contaminated water oxygen, pH and temperature in retort, simulation varying environment condition is to N in sewage aerobic biological treatment process
2the impact that O produces; (3), by human configuration sewage or add pollutant in actual sewage, simulate different pollutant burdens to N in sewage aerobic biological treatment process
2the impact that O produces; (4) by N
2o electrode and gas chromatography combine with sewage aerobic biological treatment process, have greatly improved N
2the precision of O monitoring; (5) in conjunction with various control system, a plurality of influence factors are attached in a device, can realize the many condition simulations of sewage aerobic biological treatment process, effectively improve practicality and the utilization ratio of device.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model,
Fig. 2 is the concentration curve over time of solubilised state and gaseous state nitrous oxide in the utility model embodiment 1,
Fig. 3 is COD, TN, NH in the utility model embodiment 1
4 +-N, NO
3 --N and NO
2 -the concentration of-N is curve over time,
Fig. 4 is the concentration curve over time of solubilised state and gaseous state nitrous oxide in the utility model embodiment 2,
Fig. 5 is COD, TN, NH in the utility model embodiment 2
4 +-N, NO
3 --N and NO
2 -the concentration of-N is curve over time.
Drawing explanation: 1, the sub-nitrogen monitor of liquid oxidatively, 2, gas sampling mouth, 3, pH controller, 4, soda acid storage tank, 5, injection port, 6, well heater, 7, pH electrode, 8, liquid sample mouth, 9, aeration head, 10, gas-flow rate controller, 11, air pump, 12, retort, 13, nitrous oxide electrode, 14, temp probe, 15, dissolved oxygen probe, 16, gland bonnet, 17, dissolved oxygen control instrument, 18, temperature controller, 19, gas chromatography.
Embodiment
Describe by reference to the accompanying drawings embodiment in detail.A kind of analogue means of monitoring nitrous oxide generation in sewage aerobic biological treatment process, comprise retort 12 and be arranged at the gland bonnet 16 in retort 12, described gland bonnet 16 is provided with injection port 5 and gas sampling mouth 2, wherein injection port 5 is for adding sewage and active sludge, gas sampling mouth 2 is connected with the sub-nitrogen monitoring system of gaseous oxidation, the sub-nitrogen monitoring system of this gaseous oxidation is mainly comprised of gas chromatography 19 and connecting tube, in described retort 12, be provided with solubilised state nitrous oxide monitoring system, dissolved oxygen DO control system, pH control system and temperature control system, wherein solubilised state nitrous oxide monitoring system is mainly comprised of nitrous oxide electrode 13 and nitrous oxide monitor 1, by the concentration of solubilised state nitrous oxide in nitrous oxide electrode 13 on-line monitoring sewage, dissolved oxygen DO control system is mainly by dissolved oxygen control instrument 17, dissolved oxygen probe 15, air pump 11, gas-flow rate controller 10 and aeration head 9 form, by controlling air pump 11 aeration rates, regulate the dissolved oxygen concentration of sewage in retort 12, pH control system is mainly by pH controller 3, pH electrode 7 and soda acid storage tank 4 form, by control, add the pH value that acid or alkali regulate sewage in retort 12, temperature control system is mainly by temp probe 14, temperature controller 18 and well heater 6 form, for regulating the temperature of retort 12 sewage, be 10-40 ℃, the bottom of described retort 12 is provided with liquid sample mouth 8, collection for fluid sample.Acid in described pH control system is the hydrochloric acid of volumetric molar concentration 6-10mol/L, and alkali is the sodium hydroxide solution of volumetric molar concentration 6-10mol/L.Described retort 12 is designed to right cylinder, square or rectangular parallelepiped, for sewage is mixed with active sludge, is preferably right cylinder.
Embodiment 1
Real life sewage and fresh active sludge intermixture (sludge concentration 3000mg/L) are joined in retort by injection port, and sewage quality is: COD 71mg/L, NH
4 +-N 35.2mg/L, NO
3 --N 3.3mg/L and NO
2 --N 0.3mg/L, liquid level is apart from gland bonnet 5cm, close injection port, in dissolved oxygen DO control system, pH control system and temperature control system, setting respectively the required dissolved oxygen DO of course of reaction is 2.0mg/L, pH=7.5, temperature is 25 ℃, opens air pump and starts reaction, reaction time is 4.5h, by solubilised state N
2o monitoring system and gaseous state N
2o monitoring system is monitored simultaneously and is dissolved in sewage neutralization and spills into airborne N
2o concentration change, by calculating N
2it is 0.35mg that O produces total amount, and interval 30min gets fluid sample from liquid sample mouth, carries out chemical analysis (COD, TN, NH
4 +-N, NO
3 --N and NO
2 --N etc.), obtain the variation of pollutant in sewage aerobic biological treatment process.To N in result
2in the variation of O generation and sewage, pollutant levels change and carry out correlation analysis, the results are shown in accompanying drawing 2 and accompanying drawing 3.
Embodiment 2
Sanitary sewage and fresh active sludge intermixture (sludge concentration 3000mg/L) are joined in retort by injection port, and sewage quality is: COD 59mg/L, NH
4 +-N 35.3mg/L, NO
3 --N 0.5mg/L and NO
2 --N 0.2mg/L, liquid level is apart from gland bonnet 5-10cm, close injection port, in dissolved oxygen DO control system, pH control system and temperature control system, setting respectively the required dissolved oxygen DO of course of reaction is 2.0mg/L, pH=6.5, temperature is 25 ℃, opens air pump and starts reaction, reaction time is 5h, by solubilised state N
2o monitoring system and gaseous state N
2o monitoring system is monitored simultaneously and is dissolved in sewage neutralization and spills into airborne N
2o concentration change, by calculating N
2it is 1.12mg that O produces total amount, and interval 30min gets fluid sample from liquid sample mouth, carries out chemical analysis (COD, TN, NH
4 +-N, NO
3 --N and NO
2 --N etc.), obtain the variation of pollutant in sewage aerobic biological treatment process, to N in result
2in the variation of O generation and sewage, pollutant levels change and carry out correlation analysis, the results are shown in accompanying drawing 4 and accompanying drawing 5.
More than show and described ultimate principle of the present utility model; principal character and advantage; do not departing under the prerequisite of the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall into claimed scope of the present utility model.
Claims (3)
1. the analogue means that in monitoring sewage aerobic biological treatment process, nitrous oxide produces, comprise retort and be arranged at the gland bonnet in retort, it is characterized in that: described gland bonnet is provided with injection port and gas sampling mouth, wherein injection port is used for adding sewage and active sludge, gas sampling mouth is connected with the sub-nitrogen monitoring system of gaseous oxidation, the sub-nitrogen monitoring system of this gaseous oxidation is mainly comprised of gas chromatography and connecting tube, in described retort, be provided with solubilised state nitrous oxide monitoring system, dissolved oxygen DO control system, pH control system and temperature control system, wherein solubilised state nitrous oxide monitoring system is mainly comprised of nitrous oxide electrode and nitrous oxide monitor, by the concentration of solubilised state nitrous oxide in nitrous oxide electrode on-line monitoring sewage, dissolved oxygen DO control system is mainly by dissolved oxygen control instrument, dissolved oxygen probe, air pump, gas-flow rate controller and aeration head form, by controlling air pump aeration rate, regulate the dissolved oxygen concentration of sewage in retort, pH control system is mainly by pH controller, pH electrode and soda acid storage tank form, by control, add the pH value that acid or alkali regulate sewage in retort, temperature control system is mainly by temp probe, temperature controller and well heater form, for regulating the temperature of retort sewage, be 10-40 ℃, the bottom of described retort is provided with liquid sample mouth, collection for fluid sample.
2. the analogue means that in monitoring sewage aerobic biological treatment process according to claim 1, nitrous oxide produces, it is characterized in that: the acid in described pH control system is the hydrochloric acid of volumetric molar concentration 6-10mol/L, alkali is the sodium hydroxide solution of volumetric molar concentration 6-10mol/L.
3. the analogue means that in monitoring sewage aerobic biological treatment process according to claim 1, nitrous oxide produces, is characterized in that: described retort is designed to right cylinder, square or rectangular parallelepiped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262339.4U CN203894212U (en) | 2014-05-22 | 2014-05-22 | Simulation device for monitoring generation of nitrous oxide in aerobic biological treatment process of sewage |
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|---|---|---|---|
| CN201420262339.4U CN203894212U (en) | 2014-05-22 | 2014-05-22 | Simulation device for monitoring generation of nitrous oxide in aerobic biological treatment process of sewage |
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| CN203894212U true CN203894212U (en) | 2014-10-22 |
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|---|---|---|---|
| CN201420262339.4U Withdrawn - After Issue CN203894212U (en) | 2014-05-22 | 2014-05-22 | Simulation device for monitoring generation of nitrous oxide in aerobic biological treatment process of sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445432A (en) * | 2015-12-24 | 2016-03-30 | 安徽锋亚环境技术有限公司 | Sludge-water interface physico-chemical regulation and control system for landscape water in-situ repairing |
-
2014
- 2014-05-22 CN CN201420262339.4U patent/CN203894212U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445432A (en) * | 2015-12-24 | 2016-03-30 | 安徽锋亚环境技术有限公司 | Sludge-water interface physico-chemical regulation and control system for landscape water in-situ repairing |
| CN105445432B (en) * | 2015-12-24 | 2017-12-22 | 安徽锋亚环境技术有限公司 | A kind of water sludge interface materialization regulator control system for landscape water body in-situ immobilization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141022 Effective date of abandoning: 20170531 |