CN106703155A - Urban open trench black and odorous water body treatment method - Google Patents

Urban open trench black and odorous water body treatment method Download PDF

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Publication number
CN106703155A
CN106703155A CN201611235665.6A CN201611235665A CN106703155A CN 106703155 A CN106703155 A CN 106703155A CN 201611235665 A CN201611235665 A CN 201611235665A CN 106703155 A CN106703155 A CN 106703155A
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CN
China
Prior art keywords
rainwater
ditch
water
black
bright
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611235665.6A
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Chinese (zh)
Inventor
赵广超
解建坤
吴迪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING EPURE INTERNATIONAL WATER Co Ltd
Beijing Sound Environmental Engineering Co Ltd
Original Assignee
BEIJING EPURE INTERNATIONAL WATER Co Ltd
Beijing Sound Environmental Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BEIJING EPURE INTERNATIONAL WATER Co Ltd, Beijing Sound Environmental Engineering Co Ltd filed Critical BEIJING EPURE INTERNATIONAL WATER Co Ltd
Priority to CN201611235665.6A priority Critical patent/CN106703155A/en
Publication of CN106703155A publication Critical patent/CN106703155A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F1/00Methods, systems, or installations for draining-off sewage or storm water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/30Flood prevention; Flood or storm water management, e.g. using flood barriers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention discloses an urban open trench black and odorous water body treatment method. The method combines sewage interception, a preposed pond, a grassed trench and dredging, and a rainwater regulating and storing pond is not built; on the basis of balance calculation of total incoming water amount and total pollutant of an open trench and water reducing amount and pollutant reducing amount of each measure, quality reachability of water flowing into a river is analyzed, and engineering amount is checked on the basis of water quality reachability; rainwater catchment area is divided on the basis of terrain on a topographic map and water flow direction of a current rainwater pipeline network, and catchment area of sewage is divided on the basis of a current sewage pipeline network and on-site detection. The preposed pond plays a role in regulating and storing rainwater and removing SS and a little of organic pollutant in the rainwater, and the grassed trench serving as an ecological diversion belt can intercept rainwater pollutant and can lower runoff peak value through infiltration and prolonging rainwater retention time when being used for rainfall flood transmission. Quality of rainwater flowing into the river from the open trench reaches standards higher than over-ground class-5 water in wet reasons.

Description

The bright ditch black and odorous water administering method in city
Technical field
Black and odorous water of the present invention administers field, especially a kind of bright ditch black and odorous water administering method in city.
Background technology
Cut-off on 2 16th, 2016, in national 295 regions and above city, the city for having more than 70% is investigated out Black and odorous water, the black and odorous water sum assert is 1861.《City black and odorous water renovation guide》It is required that, national region And above completed region of the city should realize river surface without large area floating object before the end of the year 2017, riverbank without rubbish, without illegal sewage draining exit; In completion black and odorous water management goal before the year two thousand twenty bottom.Municipality directly under the Central Government, provincial capital, cities specifically designated in the state plan built-up areas will be in the end of the year 2017 Before substantially eliminate black and odorous water.
Data shows that the origin cause of formation of city black and odorous water causes dirt mainly due to separate system sewage network laying imperfection Water overflow or artificial stealing enter bright ditch water body and pollute;Old town drainage system pipe network cannot accommodate with urban development by Gradually increased quantity of wastewater effluent, sewage rainy season overflow enter bright ditch make will also result in it is black smelly;In addition, early-stage rainwater carries pollutant Natural water is entered, is also black smelly Producing reason.
For above-mentioned reason, optional source section is dirty at present, increase catch basin interception ratio, build just rain storage pond etc. arranges Treat reason.But the separate system storm drain or closed conduit of rainwater catchment area relatively small (200~500 hectares), due to dispersiveness Big and contaminated degree difference, it is impossible to concentrated to it and build just rain storage pond, if individually setting up storage pond for each bright ditch, Then cost of investment is higher and land requirement is larger.
The content of the invention
Based on the problems of prior art, it is an object of the invention to provide a kind of bright ditch black and odorous water improvement side in city Method, its capital construction is few, low cost, high treating effect.
The purpose of the present invention is achieved through the following technical solutions:
The embodiment of the present invention provides a kind of bright ditch black and odorous water administering method in city, including:
Dirty pipe is cut along bright ditch laying is administered, Sewage Plant is discharged downstream through described section of dirty pipe retention periphery sewage;
Told truth in the rainwater of administered bright ditch and the preposition pool that is sequentially communicated and grass planting ditch are set, the grass planting ditch outlet is made For in line rainwater enters river mouth;
Desilting is cut down and administers bright ditch internal contamination, the in line rainwater of stated clearly ditch is entered the river matter wet season after treatment and is reached To higher than the class water quality standard of earth's surface five.
The bright ditch black and odorous water in city provided in an embodiment of the present invention as seen from the above technical solution provided by the invention Administering method, is combined by cutting dirty, the preposition pool, grass planting ditch and a desilting, and retaining all sewage through cutting a dirty measure tells truth sewage, leads to Cross preposition pool rainwater of telling truth rainwater to pre-process, rain flood runoff is cut down by grass planting ditch, and biological cutting is carried out to pollutant Stay, bright ditch internal contamination is cut down by desilting so that bright ditch rainwater enters the river matter wet season and reaches higher than the class water gauge of earth's surface five It is accurate.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will use needed for embodiment description Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing.
Fig. 1 is the bright ditch black and odorous water administering method flow chart in city provided in an embodiment of the present invention;
Fig. 2 is the preposition pool and grass planting ditch floor map that method provided in an embodiment of the present invention is set;
Fig. 3 is the preposition pool and grass planting ditch elevational view that method provided in an embodiment of the present invention is set;
The corresponding part of each label is in figure:The preposition pools of 1-;The first rubbles of 11- slope;Water level in the preposition pools of 12-;2- grass plantings Ditch;The second rubbles of 21- slope;Water level during 22- heavy rains in grass planting ditch;(vegetation blade reveals water level during 23- non-heavy rains in grass planting ditch Go out the water surface);3- downflow weirs;The rainwater that 4- administers bright ditch is told truth;The side slope of 5- grass planting ditches.
Specific embodiment
With reference to particular content of the invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched State, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the present invention Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, Belong to protection scope of the present invention.
It is a kind of for unsuitable as shown in figure 1, the embodiment of the present invention provides a kind of bright ditch black and odorous water administering method in city The method built storage pond or the city Ming Gou for building storage pond cannot be concentrated to carry out black and odorous water improvement, including:
Dirty pipe is cut along bright ditch laying is administered, Sewage Plant is discharged downstream through described section of dirty pipe retention periphery sewage;
Told truth in the rainwater of administered bright ditch and the preposition pool that is sequentially communicated and grass planting ditch are set, the grass planting ditch outlet is made For in line rainwater enters river mouth;
Desilting is cut down and administers bright ditch internal contamination, the in line rainwater of stated clearly ditch is entered the river matter wet season after treatment and is reached To higher than the class water quality standard of earth's surface five.
In above-mentioned administering method, downflow weir is set between the preposition pool and the grass planting ditch.Preferably, the porch on the preposition pool First rubble slope is set, and the grass planting ditch porch after downflow weir sets the second rubble slope.
In above-mentioned administering method, the volume on the preposition pool meets rainwater residence time 30s when meeting storm intensity in 2 years one.Before i.e. Put rainwater 30s residence times when storm intensity rainwater flow was met in the pool by 2 years one to design, overflow is set between the preposition pool and grass planting ditch Weir, water vegetation and a small amount of waterlogging grass are endured in plantation in the preposition pool.The preposition pool has certain rainwater storage function, it is possible to pass through SS and a small amount of organic pollution in precipitation removal rainwater.
In above-mentioned administering method, water vegetation and waterlogging grass are endured in plantation in the preposition pool.
In above-mentioned administering method, the transmission water of grass planting ditch meets the transmission for meeting storm intensity amount of rainfall for 2 years, described Plantation vegetation is selected in grass planting ditch:By the Festuca Arundinacea that cultivated area accounting is 75~80%, 10~15% creeping bentgrass grass White bent with 5~10%.I.e. grass planting ditch design transmission water is to meet within 2 years one plantation in storm intensity amount of rainfall, grass planting ditch to plant It is selected:It is 75~80% Festuca Arundinaceas, 10~15% creeping bentgrass grass, 5~10% white bents by cultivated area accounting.This hair Bright selected vegetation and accounting, it is ensured that vegetation survives in the range of waterlogging certain hour, maintains grass planting ditch normal function.
The method of the present invention is combined by cutting dirty, the preposition pool, grass planting ditch and desilting, and all sewage are retained through cutting dirty measure Tell truth sewage, pre-processed by preposition pool rainwater of being told truth to rainwater, rain flood runoff is cut down by grass planting ditch, and to pollutant Biological retention is carried out, bright ditch internal contamination is cut down by desilting so that bright ditch rainwater enters the river matter wet season and reaches above Ground The class water quality standard of table five.
In administering method of the present invention, the tell truth catchment area of rainwater of the rainwater being related to is divided, based on topographic map physical features and existing Shape Storm Sewer Network water (flow) direction;The tell truth catchment area of sewage of the sewage being related to is divided, and sewage network and is visited on the spot because of the present circumstance Survey.It is determined that on the basis of catchment area, with reference to the rainfall data for many years of city where bright ditch, calculating monthly imports rainwater to the present invention Amount and rainwater bring amount of pollutant into;With reference to《Water supply engineering planning specification GB 50282-98》It is determined that importing sewage quantity and band Enter amount of pollutant.
Administering method of the invention, can import total Water, gross contamination thing amount, total abatement amount, finally administer mesh based on bright ditch Target material balance, the accessibility to entering river matter carries out quantitative analysis.The pollutant for quantifying every kind of measure during analysis disappears Reduction targets, and on the basis of this target combine every kind of decreasing measure the characteristics of and working condition, determine the work of decreasing measure Cheng Liang.The change according to working condition and the different characteristics of decreasing measure, increase or decrease quantities, if necessary during analysis Increase or decrease decreasing measure, it is ensured that enter river matter in the range of final management goal.Administering method of the present invention is drawing finally While water quality approachability analysis table, the quantities of final decreasing measure combination and every kind of measure is drawn.
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
Below specific implementation process of the present invention is illustrated so that the black smelly bright ditch A in certain city administers case as an example:
Embodiment 1:Bright ditch A black and odorous water Ananlysis of main cause
(1) point-source pollution analysis:
Charge for remittance limited region dividing method in accordance with the present invention, bright ditch A rainwater tells truth rainwater catchment area for 306.08 hectares, dirty Water tells truth sewage catchment area for 35.73 hectares.
Monthly amount of rainfall computational methods are as follows:
Q '=F* ψ * q ' * 1000
Q ' --- monthly rainfall (ten thousand m3/ the moon);
F --- rainwater catchment area (ha);
ψ --- runoff coefficient;
Q ' --- monthly rainfall millimeter (mm/ months, 1000 tons/(km2* the moon))
The present invention takes 0.5 according to different cities terrain-choosing runoff coefficient, the embodiment runoff coefficient, monthly rainfall millimeter Number is shown in Table 1.
Table 1 certain city's Multi-year average precipitation table
Monthly the dirty amount computational methods of rainwater product are as follows:
M=Q ' * a*C0*100
M --- monthly rainwater produces dirty amount (the t/ months);
Q ' --- monthly rainfall (ten thousand m3/ the moon);
A --- early-stage rainwater accounting;
C0--- initial rainwater pollutant concentration (mg/L);
Just rain ratio takes 30% to the present embodiment, just rain pollutant concentration COD, NH3- N, TP values be respectively 100mg/L, 20mg/L、3mg/L。
Bright ditch A considers flood control demand in the present embodiment, and maximum rainfall computing formula is as follows:
Q=F* ψ * q*1000
Q --- design maximum rainfall (m3/s);
F --- rainwater catchment area (ha);
ψ --- runoff coefficient;
Q --- design storm intensity (L/ (s*ha))
The present embodiment storm intensity q is calculated by 2 year return period, the design of 2 hour rainfall duration.
Sewage water is the product of sewage catchment area described in the present embodiment and water consumption index, water consumption index reference 《Water supply engineering planning specification GB 50282-98》In " city unit construction land comprehensive water-using figureofmerit ".
It is sewage water and the product of pollutant concentration that sewage brings amount of pollutant into, and pollutant concentration takes the flat of repeated detection Average, COD, NH3-N, TP concentration is respectively 397.7mg/L, 34.9mg/L, 5.1mg/L.
The present embodiment detailed data is shown in Table 2 and enters river matter approachability analysis (with NH3As a example by-N).
(2) pollution of area source analysis:Because bright ditch A peripheries pumping equipment is more perfect, imported almost without face source rainwater, herein Disregard area source pollutants amount.
(3) endogenous pollution analysis:
Internal contamination amount refers to table 2 and enters river matter approachability analysis (with NH3As a example by-N).
Embodiment 2:Bright ditch A black and odorous waters control measures and quantities are adjusted
(1) sewage is told truth waste water control measure:For bright ditch A peripheries sewage it is in line, steal connect disorderly access rainwater pipeline enter The features such as water body forms pollution, dirty pipe 530m is cut along bright ditch laying DN1500, retains periphery sewage, is discharged downstream Sewage Plant.
(2) rainwater is told truth rainwater control measures:
According to the method for the present invention, the preposition pool is set at the rainwater place of telling truth of bright ditch A, heavy rain was met in the preposition pool by 2 years one Intensity rainwater flow residence time 30s is designed, and preposition pool design size is 20*10*2m, available depth 1.5m, dischargeable capacity 300m3
According to the method for the present invention, grass planting ditch is set behind the preposition pool, the grass planting ditch is that 2 years one chances are sudden and violent by transmission water Raininess degree amount of rainfall is designed, and the grass planting ditch coefficient of roughness takes 0.06, upper width of the channel 4.2m, and design maximum depth of water 2.5m, superelevation 0.5m break Face parabolically shape, two sides bank protection selects the gradient and width according to working condition.Grass planting trench planting is selected and (is accounted for by cultivated area Than):75~80% Festuca Arundinaceas, 10~15% creeping bentgrass grass, 5~10% white bents.
The Rainfall runoff formula that grass planting ditch is transferred
Q=AR(2/3)i(1/2)/n
Q-design maximum rainfall (m3/s);
Area (the m in A-cross section2);
The hydraulic radius (m) in R-cross section;
The head fall of i-grass planting ditch;
N-the coefficient of roughness.
The design of the grass planting ditch in the present embodiment is calculated, and need to constantly be checked, when flow velocity is more than 1.0m/s, should Computed repeatedly, until design current velocity is less than 1.0m/s.After calculating terminates, then the other specification for determining grass planting ditch.
(3) endogenous pollution control measures
Small Nanming ditch 0.10~0.50m of sludge deep, clear amount about 1950m3, building waste month 430t, house refuse month 3t/ d。
Every kind of measure reduction amount of pollutant refers to table 2 and enters river matter approachability analysis (with NH3As a example by-N).
Embodiment 3:Bright ditch A enters river matter approachability analysis (with NH3As a example by-N)
By method of the present invention, the remittance total Water based on bright ditch, gross contamination thing amount, and each measure are cut Diminishing amount, the EQUILIBRIUM CALCULATION FOR PROCESS for cutting down amount of pollutant, can obtain this embodiment and enter river matter approachability analysis, NH3- H concentration is above Ground Table V class water quality standard (Table V class water NH3- N concentration 2mg/L), refer to table 2.
The bright ditch A of table 2 enters river matter approachability analysis table
Administering method of the invention is not built storm detention tank, wastewater interception pipe laying, the preposition pool, grass planting ditch, desilting etc. and is arranged Apply and be combined, can eliminate black smelly and meet the flood transmission of bright ditch rain.
In administering method of the invention, rainwater catchment area is divided and is based on topographic map physical features and present situation Storm Sewer Network current side To the catchment area of sewage divides sewage network because of the present circumstance and detects on the spot.
In the present invention, the preposition pool is played rainwater storage, cuts down rainfall runoff peak value, removal rainwater SS and a small amount of organic dirt The effect of thing is contaminated, the preposition pool can use nature bank protection or simple flinty slope, and cost of investment is low;Grass planting trench culture is ecological diversion belt To pollutant with biological retention functions, when being transmitted as rain flood, extension rainwater holdup time reduction runoff is blended under can passing through Peak value.Bright ditch rainwater enters river matter and is reached higher than the class water quality standard of earth's surface five in the wet season.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, Any one skilled in the art in the technical scope of present disclosure, the change or replacement that can be readily occurred in, Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims Enclose and be defined.

Claims (5)

1. the bright ditch black and odorous water administering method in a kind of city, it is characterised in that including:
Dirty pipe is cut along bright ditch laying is administered, Sewage Plant is discharged downstream through described section of dirty pipe retention periphery sewage;
Told truth in the rainwater of administered bright ditch and the preposition pool that is sequentially communicated and grass planting ditch are set, the grass planting ditch outlet is used as straight Row's rainwater enters river mouth;
Desilting is cut down and administers bright ditch internal contamination, the in line rainwater of stated clearly ditch is entered the river matter wet season after treatment and is reached height In the class water quality standard of earth's surface five.
2. the bright ditch black and odorous water administering method in city according to claim 1, it is characterised in that the preposition pool with it is described Downflow weir is set between grass planting ditch.
3. the bright ditch black and odorous water administering method in city according to claim 1 and 2, it is characterised in that the preposition pool Volume meets rainwater residence time 30s when meeting storm intensity rainwater flow in 2 years one.
4. the bright ditch black and odorous water administering method in city according to claim 1 and 2, it is characterised in that in the preposition pool Water vegetation and waterlogging grass are endured in plantation.
5. the bright ditch black and odorous water administering method in city according to claim 1 and 2, it is characterised in that the grass planting ditch Transmission water meets plantation vegetation in the transmission for meeting storm intensity amount of rainfall for 2 years, the grass planting ditch and selects:By cultivated area Accounting is 75~80% Festuca Arundinacea, 10~15% creeping bentgrass grass and 5~10% white bent.
CN201611235665.6A 2016-12-28 2016-12-28 Urban open trench black and odorous water body treatment method Pending CN106703155A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108117164A (en) * 2017-12-22 2018-06-05 桑德生态科技有限公司 City river black-odor control method based on artificial swamp

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Publication number Priority date Publication date Assignee Title
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CN103306360A (en) * 2013-06-14 2013-09-18 天津大学 Multidimensional ecological drainage system for intercepting and controlling separate system rainwater pollutants into river
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN108117164A (en) * 2017-12-22 2018-06-05 桑德生态科技有限公司 City river black-odor control method based on artificial swamp

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