CN101009003A - Water quality index prediction method used for municipal wastewater design - Google Patents

Water quality index prediction method used for municipal wastewater design Download PDF

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Publication number
CN101009003A
CN101009003A CNA2007100512372A CN200710051237A CN101009003A CN 101009003 A CN101009003 A CN 101009003A CN A2007100512372 A CNA2007100512372 A CN A2007100512372A CN 200710051237 A CN200710051237 A CN 200710051237A CN 101009003 A CN101009003 A CN 101009003A
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China
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water
pollutant
unit
service area
sewage
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CNA2007100512372A
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姜应和
程静
曾向前
张齐云
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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Priority to CNA2007100512372A priority Critical patent/CN101009003A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/152—Water filtration

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Abstract

This invention discloses one city polluted water quality prediction method, which comprises the following steps: firstly researching and collection parameters composed of pollution water shop service area design entrance, citizen integral lift water volume, industry total product, citizen life water pollution parameters and underground water volume; then computing each year daily water pollution volume and continuing collection composed of the remove rate, service area manure rate and industry water pollution standard changes.

Description

A kind of Forecasting Methodology of municipal effluent design water-quality guideline
Technical field
The present invention relates to the Forecasting Methodology of water-quality guideline, particularly relate to a kind of city polluted water quality prediction method.
Background technology
The determining of municipal effluent design water-quality guideline is the prerequisite that the wastewater treatment plant process flow is selected, and be closely related with construction cost, operational management mode and the operating cost thereof of sewage treatment plant.Yet, in a lot of cities especially higher southern city of underground water table, its Sewage Plant influent concentration is on the low side, sewage quantity changes greatly, the sewage treatment plant that causes designing routinely the water quality and quantity index Design is in for a long time that the aeration tank sludge loading is on the low side, oxygenation capacity is excessive, the dysgonic situation of active sludge, not only make troubles, also increased operating cost in vain to operational management.
Summary of the invention
Technical matters to be solved by this invention is: the Forecasting Methodology that a kind of municipal effluent design water-quality guideline is provided, this method can be predicted the mean annual concentration and the amplitude of variation thereof of any 1 year certain pollutant comparatively exactly, thereby can be used to instruct the design and running of municipal wastewater treatment plant.
The technical solution adopted for the present invention to solve the technical problems, its step comprises:
A. the Sewage Plant service area municipal effluent amount of every day in calculation Design time:
Earlier investigation and acquisition parameter, this parameter comprise that the comprehensive domestic consumption of design population, resident, gross industrial output value, industrial water consumption standard, the resident living water in the Sewage Plant service area roll over dirty coefficient and underground water infiltration capacity, calculate according to formula (1) then:
Q T＝P T·n T·γ s/1000+M T·m T·γ g/365+Q unT (1)
In the formula (1): Q TBe design time municipal effluent amount predicted value, the m of unit 3/ d; P TFor designing population in the corresponding time service area, the people of unit; n TBe the comprehensive Live Use Water Quota of corresponding time resident, the L/ of unit (people d); γ sRoll over dirty coefficient for resident living water, can be taken as 0.85; M TBe gross industrial output value in the corresponding time service area, ten thousand yuan/year of units; m TBe corresponding time industrial water consumption standard, the m of unit 3/ ten thousand yuan; γ gBe the fresh water blowdown of industry coefficient; Q UnTBe corresponding time underground water infiltration capacity, the m of unit 3/ d;
B. predictive designs time Sewage Plant is advanced the mean annual concentration of certain pollutant in factory's sewage:
Elder generation's investigation and acquisition parameter, this parameter comprise the changing factor of this pollutant in ducted clearance, Sewage Plant construction front and back service area septic tank popularity rate and industrial wastewater discharge standard, then according to the parameter of collection and the Q of step a calculating gained T, calculate according to formula (2):
C T = P B W Y * H T ( 1 - η H ) + P B W N * ( 1 - H T ) + ( P T - P B ) W N * + γ g [ M B m T C B + ( M T - M B ) m T C A ] / 365 Q T ( 1 - η ) - - - ( 2 )
In the formula (2): C TFor corresponding to prediction time T, these pollutant levels in the Sewage Plant water inlet, the mg/L of unit; W Y *Resident's this pollutant emission figureofmerit per capita when establishing septic tank, the g/ of unit (people d); W N *Resident's this pollutant emission figureofmerit per capita when not establishing septic tank, the g/ of unit (people d); P BFor designing population, the people of unit in the service area before founding the factory; H TBe corresponding time sanitary sewage septic tank popularity rate; η HBe the clearance of septic tank to this pollutant; M BBe industrial outpuut in the service area before founding the factory, ten thousand yuan/year of units; C ABe these pollutant levels in the postindustrial waste water of founding the factory, the mg/L of unit; C BBe these pollutant levels in the industrial waste water before founding the factory, the mg/L of unit; η is the clearance of pollutant in sewer line, calculates according to formula (3):
η = ( 1 - e - 139.2 × 1.67 × 10 - 3 ) · 100 % - - - ( 3 )
In the formula (2), the meaning of other symbol is with step a;
In above-mentioned variable substitution formula (2), resulting data are predicted city sewage design water-quality guideline.
In addition, advance the mean annual concentration C of certain pollutant in factory's sewage according to above-mentioned steps b gained design time Sewage Plant TPeaking variation factor K with this pollutant of locality investigation Z, can infer the year maximal value C of these pollutant levels according to the following equation TmaxThereby, the amplitude of variation of definite these pollutant levels:
C Tmax＝C T·K Z。
The invention has the beneficial effects as follows: the mean annual concentration of the water-quality guideline of predicted city sewage and amplitude of variation thereof comparatively exactly, predicated error is generally less than 10%, can instruct the design and running of municipal wastewater treatment plant, for municipal wastewater treatment plant has been established theoretical foundation by the water quality built by separate periods, thereby save the construction investment and the operating cost of Sewage Plant.
Embodiment
The present invention has set up pollutant mean annual concentration predictor formula in the municipal effluent of the variablees such as underground water infiltration capacity that quantitatively comprise the degradation rate of pollutant in septic tank and pipe duct, sewage pipe duct.
Method provided by the invention can be applied to the higher southern city of underground water table, suitably monitors partial data and can revise partial parameters in the predictor formula, and adopting this method is the annual mean and the amplitude of variation thereof of water-quality guideline in the sewage of measurable town.
The invention will be further described below in conjunction with embodiment, but do not limit the present invention.
The present invention is used for the COD of the year two thousand twenty of Huang Jia lake, Wuhan City sewage treatment plant is predicted that its step is as follows:
1.2020 year available following formula of Huang Jia lake sewage treatment plant service area municipal effluent amount calculates:
Q T＝P T·n T·γ s/1000+M T·m T·γ g/365+Q unT (1)
In the formula (1): T is the year two thousand twenty, then according to P in the planning data Huang Jia lake sewage treatment plant service area T=64 ten thousand people, n T=320L/ (people d): get γ s=0.85; It is predicted M T=2,100 ten thousand yuan/year, m T=62.85m 3/ ten thousand yuan; The γ of this area according to investigations g=0.71; It is predicted the Q of the year two thousand twenty UnTGet preceding two 20%.
In the above-mentioned formula of above-mentioned variable substitution (1), can get municipal effluent total amount: Q in the year two thousand twenty Huang Jia lake sewage treatment plant service area 2020=32.1 ten thousand m 3/ d.
2.2020 the COD mean annual concentration can calculate with following formula in year Huang Jia lake sewage treatment plant sewage:
C T = P B W Y * H T ( 1 - η H ) + P B W N * ( 1 - H T ) + ( P T - P B ) W N * + γ g [ M B m T C B + ( M T - M B ) m T C A ] / 365 Q T ( 1 - η ) - - - ( 2 )
In the formula (2): T is the year two thousand twenty, and 2005 found the factory; Q TBe 32.1 ten thousand m 3/ d, calculated by step 2.By resident's pollutant discharge amount index prediction formula per capita, for COD, the W of the year two thousand twenty Y *=W N *=84.04gCOD/ (people d).Design population P in the Huang Jia lake sewage treatment plant service area before founding the factory B=40.44 ten thousand people.According to septic tank popularity rate H in measuring and calculating the year two thousand twenty service area T=78.57%.Septic tank is to the clearance η of COD H=12%.Preceding 2005 the interior industrial outpuut M of service area found the factory B=919.54 ten thousand yuan/year.Get COD concentration C in the industrial waste water before founding the factory B=120mg/L.Get COD concentration C in the industrial waste water after founding the factory A=400mg/L; The clearance η of COD in sewer line can calculate by following formula:
η = ( 1 - e - 139.2 × 1.67 × 10 - 3 ) · 100 % .
In the above-mentioned formula of above-mentioned variable substitution (2), can get that the COD mean annual concentration is in the year two thousand twenty Huang Jia lake sewage treatment plant sewage: C T=188.9mg/L.
3. the survey showed that for the water quality in solarization area, lake (part of Huang Jia lake sewage treatment plant service area), the peaking variation factor K of the COD of this area Z=4.77, can infer that the year maximal value of the year two thousand twenty COD is:
C Tmax＝C T·K Z＝188.9×4.77＝901.05(mg/L)
According to the method described above, can obtain the year two thousand twenty BOD equally 5, TN, NH 3The predicted value of-N and TP.
According to the method described above, can inquire into equally and obtain COD, BOD in the sewage treatment plant inflow of arbitrary time Huang Jia lake 5, TN, NH 3The annual mean of-N and TP and a year maximal value, and the monthly water quantity and quality index of annual each month.

Claims (2)

1. the Forecasting Methodology of a municipal effluent design water-quality guideline is characterized in that described method, and its step comprises:
A. the Sewage Plant service area municipal effluent amount of every day in calculation Design time: investigation and acquisition parameter earlier, this parameter comprises that the comprehensive domestic consumption of design population, resident, gross industrial output value, industrial water consumption standard, the resident living water in the Sewage Plant service area roll over dirty coefficient and underground water infiltration capacity, calculates according to formula (1) then:
Q T＝P T·n T·γ s/1000+M T·m T·γ g/365+Q unT (1)
In the formula (1): Q TBe design time municipal effluent amount predicted value, the m of unit 3/ d; P TFor designing population in the corresponding time service area, the people of unit; n TBe the comprehensive Live Use Water Quota of corresponding time resident, the L/ of unit (people d); γ sRoll over dirty coefficient for resident living water, can be taken as 0.85; M TBe gross industrial output value in the corresponding time service area, ten thousand yuan/year of units; m TBe corresponding time industrial water consumption standard, the m of unit 3/ ten thousand yuan; γ gBe the fresh water blowdown of industry coefficient; Q UnTBe corresponding time underground water infiltration capacity, the m of unit 3/ d;
B. predictive designs time Sewage Plant is advanced the mean annual concentration of certain pollutant in factory's sewage: investigate earlier and acquisition parameter, this parameter comprises the variation of this pollutant in ducted clearance, Sewage Plant construction front and back service area septic tank popularity rate and industrial wastewater discharge standard, then according to the parameter of collection and the Q of step a calculating gained T, calculate according to formula (2):
C T = P B W Y * H T ( 1 - η H ) + P B W N * ( 1 - H T ) + ( P T - P B ) W N * + γ g [ M B m T C B + ( M T - M B ) m T C A ] / 365 Q T ( 1 - η ) - - - ( 2 )
In the formula (2): C TFor corresponding to prediction time T, these pollutant levels in the Sewage Plant water inlet, the mg/L of unit; W Y *Resident's this pollutant emission figureofmerit per capita when establishing septic tank, the g/ of unit (people d); W N *Resident's this pollutant emission figureofmerit per capita when not establishing septic tank, the g/ of unit (people d); P BFor designing population, the people of unit in the service area before founding the factory; H TBe corresponding time sanitary sewage septic tank popularity rate; η HBe the clearance of septic tank to this pollutant; M BBe industrial outpuut in the service area before founding the factory, ten thousand yuan/year of units; C ABe these pollutant levels in the postindustrial waste water of founding the factory, the mg/L of unit; C BBe these pollutant levels in the industrial waste water before founding the factory, the mg/L of unit; η is the clearance of pollutant in sewer line, calculates according to formula (3):
η = ( 1 - e - 139.2 × 1.67 × 10 - 3 ) · 100 % , - - - ( 3 )
In the formula (2), the meaning of other symbol is with step a;
In above-mentioned variable substitution formula (2), resulting data are predicted city sewage design water-quality guideline.
2. the Forecasting Methodology of municipal effluent design water-quality guideline as claimed in claim 1 is characterized in that: the mean annual concentration C that advances certain pollutant in factory's sewage according to step b gained design time Sewage Plant TPeaking variation factor K with this pollutant of locality investigation Z, infer the year maximal value C of these pollutant levels according to the following equation TmaxThereby, the amplitude of variation of definite these pollutant levels:
C Tmax＝C T·K Z。
CNA2007100512372A 2007-01-09 2007-01-09 Water quality index prediction method used for municipal wastewater design Pending CN101009003A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108734620A (en) * 2018-05-29 2018-11-02 大连海事大学 A kind of size of population investigation method based on concentration of wastewater monitoring
CN109614673A (en) * 2018-11-27 2019-04-12 华南理工大学 A kind of method for quick predicting of sewage plant dehydration machine room workspace total quantity control on emission
CN110057410A (en) * 2019-04-23 2019-07-26 中国市政工程华北设计研究总院有限公司 Day Sewage Pollution object, which generates to measure, per capita calculates integrated apparatus and its method
CN110092507A (en) * 2019-05-30 2019-08-06 中国水利水电科学研究院 A kind of method and device of Industrial Wastewater Treatment
CN113159448A (en) * 2021-05-12 2021-07-23 烟台应辉智能科技有限公司 Automatic analysis and discrimination method based on environmental protection big data
CN116502809A (en) * 2023-06-27 2023-07-28 中国市政工程华北设计研究总院有限公司 Method for predicting sewage quantity during drainage household based on big position data

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108734620A (en) * 2018-05-29 2018-11-02 大连海事大学 A kind of size of population investigation method based on concentration of wastewater monitoring
CN109614673A (en) * 2018-11-27 2019-04-12 华南理工大学 A kind of method for quick predicting of sewage plant dehydration machine room workspace total quantity control on emission
CN109614673B (en) * 2018-11-27 2021-03-30 华南理工大学 Method for rapidly predicting average concentration of pollutants in working area of dewatering machine room of sewage plant
CN110057410A (en) * 2019-04-23 2019-07-26 中国市政工程华北设计研究总院有限公司 Day Sewage Pollution object, which generates to measure, per capita calculates integrated apparatus and its method
CN110092507A (en) * 2019-05-30 2019-08-06 中国水利水电科学研究院 A kind of method and device of Industrial Wastewater Treatment
CN113159448A (en) * 2021-05-12 2021-07-23 烟台应辉智能科技有限公司 Automatic analysis and discrimination method based on environmental protection big data
CN116502809A (en) * 2023-06-27 2023-07-28 中国市政工程华北设计研究总院有限公司 Method for predicting sewage quantity during drainage household based on big position data

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