CN105698013A - Method for determining positions where river water and underground water infiltrate into sewage pipeline and infiltration volume - Google Patents
Method for determining positions where river water and underground water infiltrate into sewage pipeline and infiltration volume Download PDFInfo
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- CN105698013A CN105698013A CN201610108005.5A CN201610108005A CN105698013A CN 105698013 A CN105698013 A CN 105698013A CN 201610108005 A CN201610108005 A CN 201610108005A CN 105698013 A CN105698013 A CN 105698013A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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Abstract
The invention discloses a method for determining positions where river water and underground water infiltrate into a sewage pipeline and the infiltration volume. The method comprises the following steps that S10, a monitoring section of a trunk sewer is selected; S20, the ammonia nitrogen concentrations of the river water, the underground water, an upstream monitoring point, a downstream monitoring point and main monitoring points are monitored; and S30, if the ammonia nitrogen difference value of every two adjacent monitoring points is not larger than 5 mg/L, the fact that no infiltration of the river water and the underground water occurs to the monitoring section is indicated; if the decrease value of the ammonia nitrogen concentration of sewage of a certain main monitoring point is larger than 8 mg/L compared with the front monitoring point, the fact that infiltration of the river water and the underground water occurs to the segment where the main monitoring point is monitored is indicated, and sewage flow of the upstream monitoring point and the downstream monitoring point are measured to obtain the infiltration volume; and if linear decrease occurs, the fact that infiltration of the river water and the underground water occurs to all segments of the monitoring section is indicated, the sewage flow of the upstream monitoring point and the downstream monitoring point are measured, and the infiltration volume is obtained through calculation. Through the method, the positions where the river water (the underground water) infiltrate into the sewage pipeline and the infiltration volume can be determined fast and accurately, and the investment and the cost are low.
Description
Technical field
The present invention is used for field, particularly relates to a kind of determine that river, subsoil water infiltrate the method for sewage conduct position and infiltration capacity。
Background technology
It is a kind of universal phenomenon that river (subsoil water) infiltrates trunk sewer, the process water yield that can cause sewage treatment plant increases, in design specification, generally consider that amount of infiltrating water is the 10%～20% of sewage quantity, but owing to trunk sewer construction lack of standardization and long operation are aging, trunk sewer there will be the situation of piping failure, and when the soil pipe of these breakages is in higher regional of level of ground water, subsoil water will enter to be seeped in soil pipe in a large number；When the soil pipe of these breakages be in river gush neighbouring time, also can be easily subject to infiltrating of a large amount of rivers retention of excessive fluid, these water yields infiltrated are significantly larger than the 10%～20% of sewage quantity。
Effusion meter monitoring method is that one is used in river (subsoil water) the earliest and infiltrates the monitoring method of trunk sewer, is also one of method the most general, simplest。It is by monitoring the flow of every section of branch sewer and main, it is possible to extrapolate the amount of infiltrating water of river (subsoil water), and the method can be evaluated whether that subsoil water infiltrates total amount, but compare difficult determine infiltrate position。
Subsoil water, river retention of excessive fluid and sanitary sewage all have the existence of ammonia nitrogen。Generally, the ammonia nitrogen concentration in sewage is significantly larger than the ammonia nitrogen concentration of the natural water body such as subsoil water, river retention of excessive fluid。Ammonia nitrogen is in aerobic environment, raw nitration reaction is issued by the effect of nitrobacteria (autotrophic type microorganism), it is converted into nitrate, but the concentration of dirt oxygen in water is very low, even if being partly dissolved oxygen to exist, also first being consumed by Organic substance, this is owing in sewage, the quantity of the heterotroph microorganism of decomposing organic matter is significantly larger than nitrobacteria (autotrophic type microorganism), it can thus be assumed that sewage in soil pipe in flow process the concentration of ammonia nitrogen constant。In water, the concentration of ammonia nitrogen can directly read concentration by portable ammonia nitrogen determination instrument。
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of and determines that river, subsoil water infiltrate the method for sewage conduct position and infiltration capacity, the present invention using ammonia nitrogen as feature monitoring pollution thing, passing through to monitor the flow of sewage in the sewage in soil pipe and the river outside soil pipe, the ammonia nitrogen concentration of subsoil water and soil pipe, confirm the position owing to trunk sewer breakage is subject to river, subsoil water infiltrates and the river in this region, subsoil water amount of infiltrating water。
A kind of determine that river, subsoil water infiltrate the method for sewage conduct position and infiltration capacity, comprise the following steps:
S10. the monitoring section of trunk sewer is chosen, monitored upstream point I is chosen in the upstream of described monitoring section, monitored down point II is chosen in the downstream of described monitoring section, some main monitoring points A, B is chosen between the monitoring monitored upstream point I of section and monitored down point II ..., described monitoring section is divided into multiple sections I A, AB by main monitoring point ...；
S20. the ammonia nitrogen concentration C of river, subsoil water near described monitoring section is monitoredRiver, monitored upstream point place sewage ammonia nitrogen concentration COn, monitored down point place sewage ammonia nitrogen concentration CUnderAnd the ammonia nitrogen concentration C of each main monitoring point place sewageA、CB...；
If S30. the ammonia nitrogen concentration difference of adjacent monitoring point is not more than 5mg/L, then show that monitoring section does not occur river, subsoil water to infiltrate；If the ammonia nitrogen concentration more previous monitoring point drop-out value of certain main monitoring point place sewage is more than 8mg/L, then shows to infiltrate at the sections generation river of this main monitoring point monitoring, subsoil water, measure monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity；If CA、CB... linear decline occurs, then shows that each sections of monitoring section all occurs river, subsoil water to infiltrate, measure monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity。
It is further used as the improvement of technical solution of the present invention, also includes
Step S40. when trunk sewer has some import monitoring sections branch sewer time, every branch sewer is chosen an arm monitoring point 1,2 ..., the corresponding each branch sewer in described main monitoring point is chosen successively, and makes the joint of each branch sewer and trunk sewer lay respectively at sections I A, AB ...；
Step S50. monitors the ammonia nitrogen concentration C of each arm monitoring point place sewage1、C2...；
If the ammonia nitrogen concentration difference of the adjacent monitoring point of step S60. is not more than 5mg/L, then show that branch sewer, monitoring section do not occur river, subsoil water to infiltrate；If the ammonia nitrogen concentration more previous monitoring point drop-out value of certain main monitoring point place sewage more than 8mg/L, then show the sections of this main monitoring point monitoring or import the branch sewer generation river of this sections, subsoil water infiltrates, and measures monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity；If CA、CB... linear decline occurs, then shows that each sections of monitoring section or every branch sewer importing corresponding sections all occur river, subsoil water to infiltrate, measure monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity。
It is further used as the improvement of technical solution of the present invention, if Yong Shi tidal river, river near monitoring section, is then monitored when needing to gush in river respectively high water level and low water level。
Being further used as the improvement of technical solution of the present invention, the ammonia nitrogen concentration of monitored upstream point I, monitored upstream point II, main monitoring point, arm monitoring point and river, subsoil water is all obtained by the monitoring of portable ammonia nitrogen determination instrument in dry days simultaneously。
It is further used as the improvement of technical solution of the present invention, it is determined that river, subsoil water infiltrate after sections or branch sewer, adopts CCTV technology that this section of soil pipe is detected, and finally found that soil pipe damage location。
Beneficial effects of the present invention: conventional art adopts effusion meter monitoring method, it is necessary to simultaneously arrange that what multiple effusion meters just can determine that river (subsoil water) infiltrates position and amount of infiltrating water at branch sewer, trunk sewer。Price and the installation of effusion meter that effusion meter is expensive need substantial amounts of manpower and materials, cause that the cost of monitoring is higher。Adopt the present invention by monitoring the value of branch sewer, trunk sewer and river (subsoil water) ammonia nitrogen, it is possible to quickly to determine the position of infiltrating of river (subsoil water)。To determine amount of infiltrating water, it is only necessary to the upstream and downstream at trunk sewer respectively arranges 1 effusion meter, add up to 2。The present invention can quick and precisely determine that river (subsoil water) infiltrates the position of soil pipe and infiltration capacity, puts into and less costly。
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is the inventive method principle schematic；
Fig. 2 is inventive embodiments schematic diagram。
Detailed description of the invention
When sewage conduct does not have river (subsoil water) to infiltrate, in pipeline, the concentration of sewage ammonia nitrogen is at the normal ammonia nitrogen concentration of 20～30mg/L(sanitary sewage)。River, subsoil water ammonia nitrogen concentration at below 5mg/L, the concentration of sewage ammonia nitrogen is more than 5 times of river (subsoil water) ammonia nitrogen concentration。By monitoring the ammonia nitrogen concentration of the nearest river of branch sewer, trunk sewer and trunk sewer in dry days simultaneously, it is determined that river (subsoil water) infiltrates position；By monitoring the discharge of sewage of end soil pipe, it is possible to extrapolate the amount of infiltrating water of river (subsoil water)。
When it needs to be determined that sewage conduct only have trunk sewer do not have branch sewer time, the present invention comprises the following steps:
S10. the monitoring section of trunk sewer 5 is chosen, monitored upstream point I is chosen in the upstream of described monitoring section, monitored down point II is chosen in the downstream of described monitoring section, some main monitoring points A, B is chosen between the monitoring monitored upstream point I of section and monitored down point II ..., described monitoring section is divided into multiple sections I A, AB by main monitoring point ...；
S20. the ammonia nitrogen concentration C of river, subsoil water near described monitoring section is monitoredRiver, monitored upstream point place sewage ammonia nitrogen concentration COnThe ammonia nitrogen concentration C of (determining the background ammonia nitrogen concentration of this regional sewage pipeline), monitored down point place sewageUnderAnd the ammonia nitrogen concentration C of each main monitoring point place sewageA、CB...；
If S30. the ammonia nitrogen concentration difference of adjacent monitoring point is not more than 5mg/L, then show that monitoring section does not occur river, subsoil water to infiltrate；If the ammonia nitrogen concentration more previous monitoring point drop-out value of certain main monitoring point place sewage is more than 8mg/L, then shows to infiltrate at the sections generation river of this main monitoring point monitoring, subsoil water, measure monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity；If CA、CB... linear decline occurs, then shows that each sections of monitoring section all occurs river, subsoil water to infiltrate, measure monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity。
When it needs to be determined that sewage conduct have trunk sewer 5 and some import monitoring section branch sewer 2 time, with reference to Fig. 1, trunk sewer 5 gushes 6 along the river and lays, river retention of excessive fluid enters to be seeped in trunk sewer (infiltrate region be likely to have a place or a few place) by damaged pipeline, the process water yield ultimately resulting in sewage treatment plant increases, and the present invention is further comprising the steps of on the basis of above-mentioned steps:
Step S40. chooses an arm monitoring point 1,2,3,4 on every branch sewer 6, and the corresponding each branch sewer 6 in described main monitoring point is chosen successively, and makes the joint of each branch sewer 6 and trunk sewer 5 lay respectively at sections I A, AB, BC, CD；
Step S50. monitors the ammonia nitrogen concentration C of each arm monitoring point place sewage1、C2、C3、C4；
If the ammonia nitrogen concentration size of the adjacent monitoring point of step S60. is almost constant (difference is not more than 5mg/L), then show that branch sewer 6, monitoring section do not occur river, subsoil water to infiltrate；If the ammonia nitrogen concentration more previous monitoring point drop-out value of certain main monitoring point place sewage is more than 8mg/L, then show this main monitoring point monitoring sections or import the branch sewer generation river of this sections, subsoil water infiltrates, this is owing to the ammonia nitrogen concentration of sewage is higher than the concentration of river (subsoil water), when there being river (subsoil water) to enter, ammonia nitrogen concentration can decline, by diluting the calculating of formula, it is possible to calculate the water yield ratio of sewage and river (subsoil water)。Such as: CDFor 15mg/L, its CRiverFor 5mg/L, COnFor 25mg/L, then the position that river (subsoil water) infiltrates is positioned at CD sections, and the ratio of sewage quantity and river (subsoil water) water yield is 1:1, and infiltration rate is 50%。Measure monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity；If CA、CB、CC、CDLinear decline occurs, then shows that each sections of monitoring section or every branch sewer importing corresponding sections all occur river, subsoil water to infiltrate, measure monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity。
Determine that river, subsoil water infiltrate after sections or branch sewer, adopt CCTV technology that this section of soil pipe is detected, and finally found that soil pipe damage location。
If Yong Shi tidal river in river near monitoring section, then it is monitored when needing to gush respectively high water level and low water level in river。
The ammonia nitrogen concentration of monitored upstream point I, monitored upstream point II, main monitoring point, arm monitoring point and river, subsoil water is all obtained by the monitoring of portable ammonia nitrogen determination instrument in dry days simultaneously。
River, Guangzhou is gushed cut a dirty pipe adopt the method to determine river infiltrates position, as shown in Figure 2, it is divided into 3 sections cutting dirty pipe, every section takes the inspection shaft monitoring point as ammonia nitrogen every about 100m, monitoring section 1# has 8 monitoring points, monitoring section 2# and 3# is respectively arranged with 10 monitoring points, altogether 28 monitoring points, and measures the ammonia nitrogen value gushed in river near monitoring point。Monitoring result shows, it is 1.36mg/L that ammonia nitrogen concentration is gushed in river, and the ammonia nitrogen background value of this regional sewage is 26mg/L, and the ammonia nitrogen value of each monitoring point of monitoring section 1# is at 24～27mg/L, and result shows that this section of soil pipe does not occur that river (subsoil water) infiltrates phenomenon。Monitoring section 2#, monitoring section 3# part monitoring point ammonia nitrogen value for 17～19mg/L, it was shown that this region occurs that river (subsoil water) infiltrates phenomenon, infiltrates rate of stream flow about 2.2 ten thousand ton per day。Adopting CCTV technology that this section of soil pipe is detected, result shows that disrepair phenomenon occurs in this section of soil pipe。
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the premise without prejudice to spirit of the present invention, and these equivalent modification or replacement are all contained in the application claim limited range。
Claims (5)
1. determine that river, subsoil water infiltrate the method for sewage conduct position and infiltration capacity for one kind, it is characterised in that comprise the following steps:
S10. the monitoring section of trunk sewer is chosen, monitored upstream point I is chosen in the upstream of described monitoring section, monitored down point II is chosen in the downstream of described monitoring section, some main monitoring points A, B is chosen between the monitoring monitored upstream point I of section and monitored down point II ..., described monitoring section is divided into multiple sections I A, AB by main monitoring point ...；
S20. the ammonia nitrogen concentration C of river, subsoil water near described monitoring section is monitoredRiver, monitored upstream point place sewage ammonia nitrogen concentration COn, monitored down point place sewage ammonia nitrogen concentration CUnderAnd the ammonia nitrogen concentration C of each main monitoring point place sewageA、CB...；
If S30. the ammonia nitrogen concentration difference of adjacent monitoring point is not more than 5mg/L, then show that monitoring section does not occur river, subsoil water to infiltrate；If the ammonia nitrogen concentration more previous monitoring point drop-out value of certain main monitoring point place sewage is more than 8mg/L, then shows to infiltrate at the sections generation river of this main monitoring point monitoring, subsoil water, measure monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity；If CA、CB... linear decline occurs, then shows that each sections of monitoring section all occurs river, subsoil water to infiltrate, measure monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity。
2. according to claim 1 determine that river, subsoil water infiltrate the method for sewage conduct position and infiltration capacity, it is characterised in that: also include
Step S40. when trunk sewer has some import monitoring sections branch sewer time, every branch sewer is chosen an arm monitoring point 1,2 ..., the corresponding each branch sewer in described main monitoring point is chosen successively, and makes the joint of each branch sewer and trunk sewer lay respectively at sections I A, AB ...；
Step S50. monitors the ammonia nitrogen concentration C of each arm monitoring point place sewage1、C2...；
If the ammonia nitrogen concentration difference of the adjacent monitoring point of step S60. is not more than 5mg/L, then show that branch sewer, monitoring section do not occur river, subsoil water to infiltrate；If the ammonia nitrogen concentration more previous monitoring point drop-out value of certain main monitoring point place sewage more than 8mg/L, then show the sections of this main monitoring point monitoring or import the branch sewer generation river of this sections, subsoil water infiltrates, and measures monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity；If CA、CB... linear decline occurs, then shows that each sections of monitoring section or every branch sewer importing corresponding sections all occur river, subsoil water to infiltrate, measure monitored upstream point place flow QOnAnd monitored down point place discharge of sewage QUnder, calculate and obtain infiltration capacity。
3. according to claim 1 determine that river, subsoil water infiltrate the method for sewage conduct position and infiltration capacity, it is characterised in that: if Yong Shi tidal river, river near monitoring section, then it is monitored when needing to gush respectively high water level and low water level in river。
4. according to claim 2 determine that river, subsoil water infiltrate the method for sewage conduct position and infiltration capacity, it is characterised in that: the ammonia nitrogen concentration of monitored upstream point I, monitored upstream point II, main monitoring point, arm monitoring point and river, subsoil water is all obtained by the monitoring of portable ammonia nitrogen determination instrument in dry days simultaneously。
5. according to claim 2 determine that river, subsoil water infiltrate the method for sewage conduct position and infiltration capacity, it is characterized in that: determine that river, subsoil water infiltrate after sections or branch sewer, adopt CCTV technology that this section of soil pipe is detected, and finally found that soil pipe damage location。
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| CN111120877A (en) * | 2019-12-12 | 2020-05-08 | 同济大学 | Drainage pipe network leakage monitoring equipment based on distributed optical fiber temperature measurement |
| CN114202441A (en) * | 2021-12-16 | 2022-03-18 | 天津大学 | Method for determining underground water infiltration amount in sewage pipe network in monitoring area |
| CN114624407A (en) * | 2022-02-24 | 2022-06-14 | 南宁市勘测设计院集团有限公司 | Typical plot based outside water volume measuring and calculating method for plot sewage system |
| CN116046703A (en) * | 2023-03-28 | 2023-05-02 | 中国市政工程华北设计研究总院有限公司 | Method for rapidly diagnosing inflow and infiltration of external water based on resident life pollution discharge law |
| CN116126963A (en) * | 2022-12-30 | 2023-05-16 | 哈尔滨航天恒星数据系统科技有限公司 | Inflow infiltration diagnosis method for nonlinear multi-source heterogeneous drainage model |
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| CN116126963A (en) * | 2022-12-30 | 2023-05-16 | 哈尔滨航天恒星数据系统科技有限公司 | Inflow infiltration diagnosis method for nonlinear multi-source heterogeneous drainage model |
| CN116046703A (en) * | 2023-03-28 | 2023-05-02 | 中国市政工程华北设计研究总院有限公司 | Method for rapidly diagnosing inflow and infiltration of external water based on resident life pollution discharge law |
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