CN115545511A - Domestic sewage pollutant pipeline collection and transmission efficiency accounting method - Google Patents
Domestic sewage pollutant pipeline collection and transmission efficiency accounting method Download PDFInfo
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- CN115545511A CN115545511A CN202211271672.7A CN202211271672A CN115545511A CN 115545511 A CN115545511 A CN 115545511A CN 202211271672 A CN202211271672 A CN 202211271672A CN 115545511 A CN115545511 A CN 115545511A
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Abstract
The invention relates to a method for accounting the pipeline collection and transmission efficiency of domestic sewage pollutants, which comprises the following steps: s1, defining an accounting area according to a service range of a certain urban sewage treatment plant, and acquiring the total number of sewage discharge population in the area; s2, selecting typical residential buildings in the area, and determining the BOD of the residential life per capita 5 The amount of production; s3, acquiring the BOD of the inlet water of the sewage treatment plant in dry seasons 5 Concentration and sewage treatment capacity; s4, obtaining BOD of all non-domestic sewage discharged into a sewage treatment plant in the region 5 Concentration and amount of sewage; and S5, calculating the pipeline collecting and transferring efficiency of the domestic sewage pollutants according to the data obtained in the S1-S4. The method is suitable for efficiency accounting of the urban sewage collection system with the defects of pipeline structure and function in China, and has the advantages of scientific method, strong operability and the like.
Description
Technical Field
The invention belongs to the technical field of town drainage and sewage treatment, and particularly relates to a method for accounting the pipeline collection and transmission efficiency of domestic sewage pollutants.
Background
Accurate accounting of domestic sewage pollutant pipeline collecting and transferring efficiencyThe method has important significance in scientifically evaluating the collecting and treating efficiency of urban drainage and sewage treatment systems in China and guiding the working directions of black and odorous water body treatment and sewage treatment quality improvement and efficiency improvement. At present, urban sewage collection systems in China are still imperfect, although most of sewage pollutants can be collected and conveyed by pipelines to enter sewage treatment plants for treatment, deposition and attenuation of particulate matters, organic pollutants and the like in the pipelines caused by pipeline structure and function defects can still be avoided, and even the sewage overflows into urban riverways along with rainfall erosion to cause the concentration of influent pollutants (especially BOD) of the sewage treatment plants 5 ) The method has the advantages that the problems of continuous reduction, black return and odor return of urban water bodies after rain and other important industrial concerns are solved, and scientific accounting and evaluation of the domestic sewage pollutant collecting and transferring efficiency are important for accurately identifying the problems existing in the sewage collecting system; secondly, the discharge of non-domestic sewage such as industrial sewage and construction precipitation influences the collection and treatment efficiency of the drainage system, increases the complexity of the drainage system, and improves the difficulty of the accounting of the pipeline collection and transmission efficiency. The drainage system of the developed foreign countries is usually built and operated according to design parameters, so the problems and the requirements do not exist, and a method for accurately accounting the pipeline collection and transportation efficiency of the domestic sewage pollutants, which is widely accepted by the industry, is not formed in China.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a method for accounting the efficiency of collecting and transferring the domestic sewage pollutants in the pipeline.
As conceived above, the technical scheme of the invention is as follows: a domestic sewage pollutant pipeline collection and transmission efficiency accounting method comprises the following steps:
s1, defining an accounting area according to a service range of a sewage treatment plant, and acquiring the total number of sewage discharge population in the area;
s2, selectingTaking the buildings of residents in the area, and determining the BOD of the residents' life per capita 5 The amount of production;
s3, obtaining the BOD of the inlet water of the sewage treatment plant in dry seasons 5 Concentration and sewage treatment capacity;
s4, obtaining BOD of all non-domestic sewage discharged into a sewage treatment plant in the region 5 Concentration and sewage amount;
and S5, calculating the pipeline collecting and transferring efficiency of the domestic sewage pollutants according to the data obtained in the S1-S4.
Preferably, the total population of the area in S1 is the population P actually living in the area and does not include the population P of children under 3 years old c 。
Preferably, the average daily life BOD of the residents in S2 5 The yield is determined according to the group standard "determination of the amount of pollutants produced in municipal domestic wastewater (T/CUWA 10101-2021) BOD 。
Preferably, the dry season influent BOD of S3 5 The concentration and the sewage treatment capacity are respectively weighted average concentration C BOD And daily average throughput Q.
Preferably, the BOD of the non-domestic wastewater described in S4 5 The concentration and the sewage amount are respectively weighted average concentration c i Average daily emission q i 。
Preferably, the formula for calculating the collecting and transferring efficiency of the pipeline for collecting and transferring the domestic sewage pollutants in the S5 is as follows:
the invention has the following advantages and positive effects:
(1) The invention takes the influence of non-domestic sewage discharge into consideration based on the actual problems of the ubiquitous structure and function defects of the urban sewage collection system in China, and fills the gap of the domestic sewage pollutant collection and transfer efficiency accounting method in the urban drainage and sewage treatment industry.
(2) The invention passes the group standard urban resident domestic sewage pollutant productThe biomass determination (T/CUWA 10101-2021) obtains the daily domestic sewage pollutant production of the average population, and BOD is obtained from the inlet water of the sewage treatment plant 5 The concentration and the sewage treatment capacity obtain the total amount of the collected domestic sewage pollutants, and the data source is reliable and accurate.
(3) The method is strong in pertinence and operability, is beneficial to accurately identifying the problems of the urban sewage collection system, and has important significance for practically improving the domestic sewage pollutant collection and treatment efficiency and constructing a low-carbon sustainable urban drainage system.
Detailed Description
The following examples further illustrate the embodiments of the present invention in detail. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The invention provides a method for accounting the pipeline collection and transmission efficiency of domestic sewage pollutants, which comprises the following steps:
s1, defining an accounting area by using a service range of a sewage treatment plant, and acquiring the total sewage discharge population in the area, wherein the total sewage discharge population in the area is the population P actually living in the area and does not include the population P of children under 3 years old c ；
S2, selecting the buildings of residents in the area, and determining the BOD of the residents' life per capita 5 The production amount, BOD per average life day of the residents 5 The yield is determined according to the group standard "urban resident domestic sewage pollutant yield determination" (T/CUWA 10101-2021) to obtain the result X BOD ；
S3, acquiring the BOD of the inlet water of the sewage treatment plant in dry seasons 5 Concentration and sewage treatment capacity, the dry season intake BOD 5 The concentration and the sewage treatment capacity are respectively weighted average concentration C BOD And daily average throughput Q;
s4, obtaining BOD of all non-domestic sewage discharged into a sewage treatment plant in the region 5 Concentration and sewage amount, BOD of said non-domestic sewage 5 The concentration and the sewage amount are respectively weighted average concentration c i Average daily discharge q i ；
S5, calculating the collecting and transferring efficiency of the domestic sewage pollutant pipeline according to the data obtained in the S1-S4, wherein the calculating formula of the collecting and transferring efficiency of the domestic sewage pollutant pipeline is as follows:
specific examples of the present invention are:
the first embodiment is as follows: the method for accounting the efficiency of collecting and transferring the domestic sewage pollutants in the pipeline comprises the following steps of:
s1, defining an accounting area by using the service range of a sewage treatment plant in a certain town of Jiangsu province, and acquiring the actual population P of 20 ten thousands of people and the population P of children under 3 years old in the area c About 0.5 million people;
s2, selecting typical residential buildings in the area, and determining according to the group standard 'determination of the amount of pollutants produced in urban residential domestic sewage' (T/CUWA 10101-2021) to obtain BOD (biochemical oxygen demand) of the residents per capita 5 Amount of production X BOD Is 55 g/(homo d);
s3, acquiring the BOD of the inlet water of the sewage treatment plant in dry seasons 5 Weighted average concentration C BOD 95mg/L, and the daily average sewage treatment capacity Q is 8.7 ten thousand tons;
s4, obtaining BOD of No. 1 enterprise industrial wastewater discharged into a sewage treatment plant in the region 5 Weighted average concentration c 1 22mg/L, daily average discharge q 1 0.2 ten thousand tons; BOD of No. 2 enterprise industrial wastewater discharged into sewage treatment plant 5 Weighted average concentration c 2 84mg/L, daily average discharge q 2 1.5 ten thousand tons; BOD (construction precipitation) discharged into sewage treatment plant 5 Weighted average concentration c 3 The daily average discharge amount q is lower than the lower limit value of the measurement and is calculated as 0mg/L 3 1.1 ten thousand tons;
and S5, calculating to obtain the pipeline collection and transmission efficiency of the domestic sewage pollutants in the area to be 64.9% according to the data obtained in the S1-S4.
Example two: the method for accounting the efficiency of collecting and transferring the domestic sewage pollutants in the pipeline comprises the following steps of:
s1, treating sewage in certain town of Guangdong province by using water treatment plantDefining an accounting area in a business range, and acquiring the actual population P of the residents in the area as 65 ten thousands of people and the population P of children under 3 years old c About 1.2 million people;
s2, selecting typical residential buildings in the area, and determining according to the group standard 'determination of the amount of pollutants produced in urban residential domestic sewage' (T/CUWA 10101-2021) to obtain BOD (biochemical oxygen demand) of the residents per capita 5 Amount of production X BOD Is 50 g/(homo d);
s3, acquiring the BOD of the inlet water of the sewage treatment plant in dry seasons 5 Weighted average concentration C BOD 58mg/L, and the daily average sewage treatment capacity Q is 27.6 ten thousand tons;
s4, obtaining BOD of No. 1 enterprise industrial wastewater discharged into a sewage treatment plant in the region 5 Weighted average concentration c 1 15mg/L, daily average discharge q 1 0.5 ten thousand tons; BOD of No. 2 enterprise industrial wastewater discharged into sewage treatment plant 5 Weighted average concentration c 2 30mg/L, daily average discharge q 2 0.8 ten thousand tons; BOD (biochemical oxygen demand) of 3# enterprise industrial wastewater discharged into sewage treatment plant 5 Weighted average concentration c 3 125mg/L, daily average discharge q 3 1.4 ten thousand tons;
and S5, calculating to obtain the pipeline collection and transmission efficiency of the domestic sewage pollutants in the area to be 43.7% according to the data obtained in the S1-S4.
Example three: the method for accounting the efficiency of collecting and transferring the domestic sewage pollutants in the pipeline comprises the following steps of:
s1, defining an accounting area by using the service range of a sewage treatment plant in a certain town of Beijing, and acquiring the actual population P of 30 ten thousand people and the population P of children under 3 years old in the area c About 0.07 ten thousand people;
s2, selecting typical resident buildings in the area, and determining the average daily BOD (Biochemical oxygen demand) of residents according to the group standard 'urban resident domestic sewage pollutant production quantity determination' (T/CUWA 10101-2021) 5 Amount of production X BOD 60 g/(human d);
s3, acquiring the BOD of the inlet water of the sewage treatment plant in dry seasons 5 Weighted average concentration C BOD 116mg/L, and the daily average sewage treatment capacity Q is 12.8 ten thousand tons;
s4, discharging non-domestic sewage into a sewage treatment plant in the region;
and S5, calculating to obtain the pipeline collection and transmission efficiency of the domestic sewage pollutants in the area to be 82.7% according to the data obtained in the S1-S4.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and it is obvious for those skilled in the art that the technical solutions of the present invention can be modified or substituted with equivalents without departing from the technical principle of the present invention, and these modifications and equivalents should also be covered in the scope of the claims of the present invention.
Claims (6)
1. A domestic sewage pollutant pipeline collection and transmission efficiency accounting method is characterized by comprising the following steps:
s1, defining an accounting area according to a service range of a certain urban sewage treatment plant, and acquiring the total number of sewage discharge population in the area;
s2, selecting the buildings of residents in the area, and determining the BOD of the residents' life per capita 5 The amount of production;
s3, acquiring the BOD of the inlet water of the sewage treatment plant in dry seasons 5 Concentration and sewage treatment capacity;
s4, obtaining BOD of all non-domestic sewage discharged into a sewage treatment plant in the region 5 Concentration and amount of sewage;
and S5, calculating the pipeline collecting and transferring efficiency of the domestic sewage pollutants according to the data obtained in the S1-S4.
2. The method for calculating the efficiency of pipeline collection and transportation of domestic sewage pollutants according to claim 1, wherein S1 is a region in which the population P of the sewage draining people is actually resident and excludes the population P of children under 3 years old c 。
3. The method as claimed in claim 1, wherein the pipeline collecting and transferring efficiency accounting method for domestic sewage pollutants is characterized in that the average daily BOD of the residents in S2 5 The production is based on the group standard of Town HouseThe result X obtained by measuring the amount of pollutants produced in civil wastewater (T/CUWA 10101-2021) BOD 。
4. The method for accounting for pipeline collection and transportation efficiency of domestic sewage pollutants as claimed in claim 1, wherein said dry season influent BOD of S3 5 The concentration and the sewage treatment capacity are respectively weighted average concentration C BOD And daily average throughput Q.
5. The method of claim 1, wherein the BOD of the non-domestic wastewater of S4 is calculated based on the pipeline collection and transportation efficiency of the domestic wastewater contaminants 5 The concentration and the sewage amount are respectively weighted average concentration c i Average daily discharge q i 。
6. The method for accounting for pipeline collection and transportation efficiency of domestic sewage pollutants according to claim 1, wherein the formula for calculating the pipeline collection and transportation efficiency of domestic sewage pollutants in S5 is as follows:
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116070965A (en) * | 2023-03-06 | 2023-05-05 | 近通物联网(苏州)有限公司 | Efficiency evaluation method and device for drainage pipe network, electronic equipment and storage medium |
| CN116227742A (en) * | 2023-05-06 | 2023-06-06 | 中国市政工程华北设计研究总院有限公司 | Sewage treatment plant inlet BOD prediction method based on non-domestic sewage mixing influence |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116070965A (en) * | 2023-03-06 | 2023-05-05 | 近通物联网(苏州)有限公司 | Efficiency evaluation method and device for drainage pipe network, electronic equipment and storage medium |
| CN116227742A (en) * | 2023-05-06 | 2023-06-06 | 中国市政工程华北设计研究总院有限公司 | Sewage treatment plant inlet BOD prediction method based on non-domestic sewage mixing influence |
| CN116227742B (en) * | 2023-05-06 | 2023-08-04 | 中国市政工程华北设计研究总院有限公司 | Sewage treatment plant inlet BOD prediction method based on non-domestic sewage mixing influence |
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