CN105461075A - Urban runoff non-point source pollution advanced treatment and reuse technology - Google Patents
Urban runoff non-point source pollution advanced treatment and reuse technology Download PDFInfo
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- CN105461075A CN105461075A CN201610002051.7A CN201610002051A CN105461075A CN 105461075 A CN105461075 A CN 105461075A CN 201610002051 A CN201610002051 A CN 201610002051A CN 105461075 A CN105461075 A CN 105461075A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to an urban runoff non-point source pollution advanced treatment and reuse technology. According to the technology, an urban runoff collecting system, a treatment system and a storing and recycling system are included; the urban runoff collecting system comprises a roadside water permeation plant zone and permeating type urban green land which are used for collecting and initially purifying an urban non-point source; the treatment system comprises an ecology gravel bed and wet land which are used for further removing pollutants such as heavy metal, nitrogen and phosphorus in the urban non-point source; the storing system comprises a high-quality water self-purification landscape pond which can achieve deep purification on an urban runoff, have the landscape effect and supply high-quality reclaimed water to urban landscaping and watering, underground water supplementing and the like. Accordingly, the technology which can efficiently remove various kinds of the pollutants in the urban non-point source runoff and produce and reuse the high-quality reclaimed water is supplied through optimization and improvement of all the units for urban runoff non-point source pollution.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of urban runoff pollution of area source advanced treatment and reuse technology.
Background technology
Pollution of area source has become one of important sources of domestic and international water environment pollution.Along with China's urban industry waste water, sanitary sewage discharge obtain effective improvement, be obtained attention gradually with the pollution of area source that town road runoff, the dirt of livestock and poultry cultivation excrement and residents in rural community are main pollution source.Because pollution of area source has source dispersion, produces that position is not easy to identify, accidentally strong and impact load is large, thus traditional wastewater focuses on technology and is difficult to use in Ides On Prevention And Control of Regional Pollution.Existing pollution of area source treatment process mainly concentrates on the pollutent adopting and pollute and intercept and bring and reduce and come entrained by runoff, such as adopt greenery patches buffering to bring and filter sedimentation silt, utilize the effects such as plant absorption to remove nutritive substance and the various Atmospheric particulates etc. such as nitrogen phosphorus.This kind of technical finesse means are single, processing efficiency is on the low side, thus to each pollutant control limited efficiency.Chinese patent 201210210495.1 discloses " non-point source pollution control technique based on point-line-face stereoscopic configurations ", this dye treatment process can adapt to the unstable of Rural Plane Source Pollution, and can suit measures to local conditions, but floor space is large, system complex, is not suitable for process city surface source pollution.Chinese patent 201410743613.4 discloses " a kind of system and method for water purifying pollution of area source ", although this technique is optimized improvement to each cell process of controlling area-source pollution, but elementary and advanced treatment only relies on physical cleaning, method is single, impact by flooding quantity is difficult to ensure enough hydraulic detention times, cannot realize comprehensive water environment treatment.
Construct in this technology a kind of technique brief, applied widely, be easy to urban construction, urban runoff controlling area-source pollution system that suitable and surrounding landscape merges.This system both can process city surface source pollution, again can the urban look band of integration construct; Carry out effectively at buffering suface source impact load to pollution, while retaining, also can carry out treatment in situ and deep purifying by source, opposite sewage, for water cycle and fresh-water-saving resource provide reliable outlet.
Summary of the invention
The invention provides a kind of less investment, be easy to management, easy and simple to handle, widely applicable, both dispersion treatment can be carried out to city surface source pollution, also can carry out concentrated advanced treatment to source, certain area face sewage, and technique and the combined system of secondary recovery utilization are carried out to sewage after process.
For achieving the above object, the technical solution used in the present invention is as follows:
The present invention is a kind of urban runoff pollution of area source advanced treatment and reuse technology, and technique comprises the gathering system of urban runoff, treatment system and memory recall system three parts; Urban runoff gathering system comprises infiltration vegetation zone, roadside and osmosis type urban green space; Treatment system comprises ecological gravel bed and wetland; Memory recall system comprises the high-quality water self-cleaning view pool; When system cloud gray model, sewage is collected and rough purification city surface source by seep water vegetation zone, osmosis type urban green space, roadside successively; Ecological gravel bed and wetland remove the pollutent such as heavy metal in city surface source, nitrogen phosphorus further; The high-quality water self-cleaning view pool realizes the deep purifying of urban runoff and has landscape effect, can be urban afforestation, waters and to spill and supplementing etc. of underground water provides high-quality recycled water.
Above-mentioned a kind of urban runoff pollution of area source advanced treatment and reuse technology, is characterized in that: gathering system, treatment system and memory recall three systems arrange from high to low along elevation, and current are horizontal flow and combined-flow form automatic flowing.
Above-mentioned a kind of urban runoff pollution of area source advanced treatment and reuse technology, is characterized in that: infiltration vegetation zone, roadside and osmosis type urban green space comprise two-layer up and down, i.e. upper strata vegetable layer, lower floor's gravel permeable layer, and urban runoff permeates from top to bottom; Infiltration vegetation zone, roadside and osmosis type urban green space are lower than road 2 ~ 10cm.
Above-mentioned a kind of urban runoff pollution of area source advanced treatment and reuse technology, is characterized in that: use rammed earth bottom infiltration vegetation zone, roadside and osmosis type urban green space, prevent effluent seepage; Lower floor gravel permeable layer filling 10 ~ 30cm is thick, the zeolite of particle diameter Φ 4 ~ 30mm, gravel or functional stuffing; Lower floor's gravel permeable layer keeps the gradient by 2 ~ 5.0 ‰ along cloth water channel side to gravel bed, make urban runoff automatically flow into ecological gravel bed by physical features from high to low, decrease the use of pipeline, and in this, as the matrix of microbial film and plant-growth; Upper strata vegetable layer covers the thick planting soil of 5 ~ 20cm, and at pedosphere plantation well developed root system, anti-pollution characteristic good and adaptable view crop, plant can remove particulate matter, nitrogen and phosphorus in urban runoff.
Above-mentioned a kind of urban runoff pollution of area source advanced treatment and reuse technology, is characterized in that: ecological gravel bed is in series by the mode of horizontal flow or combined-flow and wetland, the high-quality water self-cleaning view pool; Ecological gravel bed and wetland hydraulic detention time ratio control 1: 2 ~ 5; Wetland can take surface low or undercurrent, realizes the advanced treatment of the ammonia nitrogen to sewage, total nitrogen, total phosphorus.
Above-mentioned a kind of urban runoff pollution of area source advanced treatment and reuse technology, is characterized in that: ecological gravel bed comprises two-layer up and down, i.e. upper strata chiltern filtering layer, lower floor's gravel bed, base plate rammed earth; The wherein thick 10 ~ 30cm of lower floor's gravel bed, fills the functional stuffing of Φ 8 ~ 25mm; Thick 5 ~ the 20cm of upper strata chiltern filtering layer, fills Φ 3 ~ 15mm functional stuffing, plantation landscape plant, shrub or emergent; Whole gravel bed keeps the gradient of 2 ~ 5.0 ‰, ensures that sewage self-flowing enters subsequent processing units, reduces pipeline and uses.
Above-mentioned a kind of urban runoff pollution of area source advanced treatment and reuse technology, is characterized in that: wetland is improvement surface low or combined-flow wetland.Combined-flow wetland distinguishes the ceramic grain filter of Φ 15 ~ 25mm and the functional stuffing of Φ 3 ~ 5mm from the bottom up successively, and according to certain density plantation wetland plant; By plant, matrix and microorganism acting in conjunction purification runoff.
Above-mentioned a kind of urban runoff pollution of area source advanced treatment and reuse technology, it is characterized in that: the high-quality water self-cleaning view pool depth of water 0.5 ~ 4m, hydraulic detention time is greater than 1.0d, and shoaling water Inner kind plants emergent and floating plant, lays sandy soil protective layer and coarse sand filtering layer bottom the pool; Pool outlet arranges automatic bailer, can to discharge water neighbouring river course, park green land or direct recharge of groundwater according to the reuse demand of water.
The present invention compared with prior art has the following advantages:
1, seep water vegetation zone and osmosis type urban green space, ecological gravel bed and wetland, the system gradient series connection of three, the high-quality water self-cleaning view pool in roadside by the present invention, have structure simple, invest low, easily build, easily run, the advantage of easy care.
2, the present invention can realize scene to city surface source runoff, purified in situ and advanced treatment, achieves the in-situ treatment of city surface source pollution and direct resource utilization.
3, the technique that the present invention researches and develops is combined closely with existing greenery patches, city and urban rivers and lakes construction, and existing urban green space and lake, river only can build native system through simple transformation.
4, the present invention is by the Optimal improvements to urban green space, ecological gravel bed, wetland and the high-quality water self-cleaning view pool, such as technique unit configuration, aeration intensity, the depth of water etc. are transformed, the effective removal to heavy metal, TN, TP, organism etc. in urban runoff can be realized.
5, the present invention lays flexibly, and floor space is moderate, is beneficial in urban construction, and can be directly used in landscape belt construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's a kind of urban runoff pollution of area source advanced treatment and reuse technology.
Label declaration in accompanying drawing is as follows: infiltration vegetation zone, 1-roadside, 2-perviousness urban green space, 3-ecological gravel bed, 4-wetland, the 5-high-quality water self-cleaning view pool, 7-motorized valve, 6-fluid level controller.
Embodiment
The present invention is a kind of urban runoff pollution of area source advanced treatment and reuse technology.Embodiment is as follows: path flows through road ponding canal or directly flows automatically and enters infiltration vegetation zone, roadside 1 and osmosis type urban green space 2.Path flows through upper strata vegetable layer, enters lower floor's gravel permeable layer, and suspended particulate large in runoff is by root system of plant and soil cut-off filter; Part TN, TP and heavy metal are absorbed by root system of plant.After lower floor's gravel permeable layer is collected, city surface source runoff enters ecological gravel bed 3, through certain hydraulic detention time, the upper strata chiltern filtering layer of ecological gravel bed, lower floor's gravel bed filter further to urban runoff, adsorb and by after biological action denitrogenation dephosphorizing, and process water outlet is from flowing to wet land system 4.Absorbed by root system of plant, nitrated, denitrification and biological phosphate-eliminating effect, and the promoter action of functional stuffing to nitration denitrification, the strengthening to ammonia nitrogen are adsorbed, are promoted phosphatic crystallization, organic degraded is accelerated, the chemistry of heavy metal is fixed, to the sterilization of pathogenic bacteria, realize effective control that urban runoff pollutes.Water outlet is through overflow weir or directly enter the high-quality water self-cleaning view pool 5, realizes the advanced treatment to sewage, and have good landscape effect by the acting in conjunction of bacterium algae and waterplant.According to water demands such as urban afforestation, control fluid level controller 7 by motorized valve 6 and the water after process is added to the facility such as Urban Parks, green belt, finally realize the comprehensive process of urban runoff and the process of disposal.
Embodiment one:
Utilize aforesaid way purifying city runoff sewage.System is of a size of: (1) urban green space: length × wide × height=200m × 40m × 15 ~ 30cm, (2) ecological gravel bed: length × wide × height=200m × 50m × 20 ~ 30cm (3) wetland: length × wide × height=200m × 80m × 30 ~ 80cm, (4) high-quality water self-cleaning view pool: length × wide × height=200cm × 300cm × 120 ~ 300cm.
Be 20 ~ 100mg/L, TP concentration be 0.3 ~ 1.2mg/L, TN concentration at inlet COD concentration be 1.9 ~ 6.8mg/L, ammonia nitrogen concentration is 1.2 ~ 5.8mg/L, and temperature is 26.3 ~ 28.7 DEG C, and hydraulic load is 0.21m
3/ m
2under the condition of/d, the average removal rate of face origin system to COD, TP, TN and ammonia nitrogen is respectively 65.33%, 54.68%, 43.99%, 38.05%.
Embodiment two:
Utilize aforesaid way purifying city runoff sewage.System is of a size of: (1) urban green space: length × wide × height=300m × 50m × 25 ~ 47cm, (2) ecological gravel bed: length × wide × height=300m × 70m × 30 ~ 60cm (3) wetland: length × wide × height=300m × 90m × 40 ~ 90cm, (4) high-quality water self-cleaning view pool: length × wide × height=400cm × 300cm × 150 ~ 400cm.
Be 100 ~ 300mg/L, TP concentration be 1.6 ~ 3.4mg/L, TN concentration at inlet COD concentration be 3.3 ~ 23.2mg/L, ammonia nitrogen concentration is 0.9 ~ 22.7mg/L, and temperature is 23.5 ~ 25.6 DEG C, and hydraulic load is 0.12m
3/ m
2under the condition of/d, the average removal rate of face origin system to COD, TP, TN and ammonia nitrogen is respectively 89.79%, 49.96%, 70.02%, 49.05%.
Claims (8)
1. urban runoff pollution of area source advanced treatment and a reuse technology, technique comprises the gathering system of urban runoff, treatment system and memory recall system three parts; Urban runoff gathering system comprises infiltration vegetation zone, roadside and osmosis type urban green space; Treatment system comprises ecological gravel bed and wetland; Memory recall system comprises the high-quality water self-cleaning view pool; When system cloud gray model, sewage is collected and rough purification city surface source by seep water vegetation zone, osmosis type urban green space, roadside successively; Ecological gravel bed and wetland remove the pollutent such as heavy metal in city surface source, nitrogen phosphorus further; The high-quality water self-cleaning view pool realizes the deep purifying of urban runoff and has landscape effect, can be urban afforestation, waters and to spill and supplementing etc. of underground water provides high-quality recycled water.
2. a kind of urban runoff pollution of area source advanced treatment according to claim 1 and reuse technology, it is characterized in that: gathering system, treatment system and memory recall three systems arrange from high to low along elevation, current are horizontal flow and combined-flow form automatic flowing.
3. a kind of urban runoff pollution of area source advanced treatment according to claim 1,2 and reuse technology, is characterized in that: ecological gravel bed is in series by the mode of horizontal flow or combined-flow and wetland, the high-quality water self-cleaning view pool; Ecological gravel bed and wetland hydraulic detention time ratio control 1: (2 ~ 5); Wetland can take surface low or undercurrent, realizes the advanced treatment of the ammonia nitrogen to sewage, total nitrogen, total phosphorus.
4. a kind of urban runoff pollution of area source advanced treatment according to claim 1 and reuse technology, it is characterized in that: infiltration vegetation zone, roadside and osmosis type urban green space comprise two-layer up and down, i.e. upper strata vegetable layer, lower floor's gravel permeable layer, urban runoff permeates from top to bottom; Infiltration vegetation zone, roadside and osmosis type urban green space are lower than road 2 ~ 10cm.
5. a kind of urban runoff pollution of area source advanced treatment according to claim 1,4 and reuse technology, is characterized in that: use rammed earth bottom infiltration vegetation zone, roadside and osmosis type urban green space, prevent effluent seepage; Lower floor's gravel permeable layer fills zeolite or the gravel of the thick particle diameter Φ of 10 ~ 30cm 4 ~ 30mm, lower floor's gravel permeable layer keeps the gradient by 2 ~ 5.0 ‰ along cloth water channel side to gravel bed, urban runoff is made automatically to flow into ecological gravel bed by physical features from high to low, decrease the use of pipeline, and in this, as the matrix of microbial film and plant-growth; Upper strata vegetable layer covers the thick planting soil of 5 ~ 20cm, and at pedosphere plantation well developed root system, anti-pollution characteristic good and adaptable view crop, plant can remove particulate matter, nitrogen and phosphorus in urban runoff.
6. a kind of urban runoff pollution of area source advanced treatment according to claim 1 and reuse technology, is characterized in that: ecological gravel bed comprises two-layer up and down, i.e. upper strata chiltern filtering layer, lower floor's gravel bed, base plate rammed earth; The wherein thick 10 ~ 30cm of lower floor's gravel bed, fills the functional stuffing of Φ 8 ~ 12mm; Thick 5 ~ the 20cm of upper strata chiltern filtering layer, fills Φ 3 ~ 15mm functional stuffing, plantation landscape plant, shrub or emergent; Whole gravel bed keeps the gradient of 2 ~ 5.0 ‰, ensures that sewage self-flowing enters subsequent processing units, reduces pipeline and uses.
7. a kind of urban runoff pollution of area source advanced treatment according to claim 1 and reuse technology, is characterized in that: wetland is improvement surface low or combined-flow wetland; With rammed earth bottom wetland, prevent seepage; Combined-flow wetland distinguishes the ceramic grain filter of Φ 15 ~ 25mm and the functional stuffing of Φ 3 ~ 5mm from the bottom up successively, and according to certain density plantation wetland plant; By plant, matrix and microorganism acting in conjunction purification runoff.
8. a kind of urban runoff pollution of area source advanced treatment according to claim 1 and reuse technology, it is characterized in that: the high-quality water self-cleaning view pool depth of water 0.5 ~ 4m, hydraulic detention time is greater than 1.0d, shoaling water Inner kind plants emergent and floating plant, lays sandy soil protective layer and coarse sand filtering layer bottom the pool; Pool outlet arranges fluid level controller, regularly can to discharge water neighbouring river course, park green land or direct recharge of groundwater according to the reuse demand of water.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106186337A (en) * | 2016-08-03 | 2016-12-07 | 余乾 | A kind of heavy metal waste water treatment system |
| CN106966508A (en) * | 2017-05-26 | 2017-07-21 | 湖南农业大学 | The method that a kind of utilization Plant Pond+artificial wetland high-efficiency removes heavy metal in farmland irrigating water |
| CN107879565A (en) * | 2017-12-20 | 2018-04-06 | 安徽理工大学 | A kind of semi-saturation vertical flow constructed wetland device for handling city rainfall runoff |
| CN108249575A (en) * | 2017-12-20 | 2018-07-06 | 上海市政工程设计研究总院（集团）有限公司 | A kind of method for treating water for controlling area-source pollution |
| CN108996703A (en) * | 2018-07-25 | 2018-12-14 | 青岛理工大学 | Black smelly water soil and water hydrologic cycle ecological remediation system |
| CN109384347A (en) * | 2017-08-14 | 2019-02-26 | 光大水务科技发展（南京）有限公司 | City surface source pollution purifying treatment method |
| CN114991076A (en) * | 2022-03-25 | 2022-09-02 | 上海琸源水生态环境工程有限公司 | Method for reducing runoff pollution of purified waterfront farmland |
| CN115367951A (en) * | 2022-06-29 | 2022-11-22 | 北京北华中清环境工程技术有限公司 | Landscape type rainwater purification system and method based on natural solution |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186337A (en) * | 2016-08-03 | 2016-12-07 | 余乾 | A kind of heavy metal waste water treatment system |
| CN106186337B (en) * | 2016-08-03 | 2019-06-14 | 江西利华环保有限公司 | A kind of heavy metal waste water treatment system |
| CN106966508A (en) * | 2017-05-26 | 2017-07-21 | 湖南农业大学 | The method that a kind of utilization Plant Pond+artificial wetland high-efficiency removes heavy metal in farmland irrigating water |
| CN109384347A (en) * | 2017-08-14 | 2019-02-26 | 光大水务科技发展（南京）有限公司 | City surface source pollution purifying treatment method |
| CN107879565A (en) * | 2017-12-20 | 2018-04-06 | 安徽理工大学 | A kind of semi-saturation vertical flow constructed wetland device for handling city rainfall runoff |
| CN108249575A (en) * | 2017-12-20 | 2018-07-06 | 上海市政工程设计研究总院（集团）有限公司 | A kind of method for treating water for controlling area-source pollution |
| CN108996703A (en) * | 2018-07-25 | 2018-12-14 | 青岛理工大学 | Black smelly water soil and water hydrologic cycle ecological remediation system |
| CN114991076A (en) * | 2022-03-25 | 2022-09-02 | 上海琸源水生态环境工程有限公司 | Method for reducing runoff pollution of purified waterfront farmland |
| CN115367951A (en) * | 2022-06-29 | 2022-11-22 | 北京北华中清环境工程技术有限公司 | Landscape type rainwater purification system and method based on natural solution |
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| CN105461075B (en) | 2019-02-05 |
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