CN102730823B - Simulative nature river course water purification system - Google Patents
Simulative nature river course water purification system Download PDFInfo
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- CN102730823B CN102730823B CN201210237690.3A CN201210237690A CN102730823B CN 102730823 B CN102730823 B CN 102730823B CN 201210237690 A CN201210237690 A CN 201210237690A CN 102730823 B CN102730823 B CN 102730823B
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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 discloses a simulative nature river course water purification system. A river section is based on the trapezoidal compound section, multiple segments of filler purification regions are arranged at two sides in a main channel in a staggered manner so as to form sub-channels meandering on a plane, and the height of the filler purification region is higher than the low water level of the river; the filler purification region is filled with ripraps, broken stones and surface fillers from the bottom to the top; and a riprap banket is arranged between each two segments of filler purification regions. The simulative nature river course water purification system provides diversified habitat environments while strengthening the self cleaning capacity of the river and improving the river water environment quality, and plays an active role in repairing the biological diversity recovery of the stream segment. The simulative nature river course water purification system has the following remarkable advantages that the system operates in a passive unpowered manner, can improve the flow state, has no influence on the flood discharge of the main stream in the flood season, and has the advantages in multiple aspects, such as excellent water purification and ecological restoration effect and so on, especially, the system is suitable for the small rivers with low sediment amount and low flow velocity, or the scenic rivers.
Description
Technical field
The invention belongs to river water purification of water quality and ecological restoration technical field, relate to a kind of plan nature riverway water quality purification system for polluted river water correction and river ecosystem restoration particularly.
Background technology
The two fold problem of shortage of water resources and water environment pollution faced by China's present stage, partial rivers assume responsibility for the dirt eliminating function of trade effluent, sanitary sewage and pollution of area source, make the problem of stream pollution very outstanding, threat is caused to the health of town water guarantee and resident, so the technical need that water quality of river improves is very urgent.Present stage, the pollutent that mainly exceeds standard in river was COD and ammonia nitrogen.
River purification technology is mainly divided into physics, chemistry, ecology, biology and combination technique.Wherein the mode of physics, chemistry mainly contains water transfer, adds the modes such as medicament, but these processing modes to there is cost high or environment is had to the deficiency of the aspects such as negative impact.And adopt biology, ecology and combination technique measure thereof to have environmental friendliness because of it, be convenient to the features such as maintenance, become the one preferred technique of water quality of river improvement and ecological recovery.
Biology, ecotechnology and combination technique measure thereof mainly comprise:
(1) aquatic plant purification method, comprises and builds community of aquatic organism (very water, submerged plant), builds biological floating bed etc.;
(2) river course contact oxidation method, directly lays gravel or its bio-carrier or filtrate, is aided with aeration aerating technique cleaning action in river course.
Wherein artificial swamp is as the time-honored ecological wastewater treatment system of one, by the effect such as physics, chemistry, biology of filtrate, microorganism, plant, organic pollutant in absorption, conversion sewage and nutritive salt, bacterium and heavy metal, obtained more application in purifying river water.
Japan is provided with ancient rugged Water warfare field on the tributary of Jiang Huchuan-plate river, utilizes buried cobble contact oxidation method to process river.Korea S also carries out the engineering based on cobble biomembranous contact oxidation technology process river in Liang Cai river, tributary, Han River.But artificial swamp, especially has the underflow type artificial wet land of higher removal efficiency, it builds the certain requirement of demand fulfillment, usually builds at river course Riparian zone, belongs to processed offline mode, and namely diversion is in the current wetland independently built.
The main defiber process of purification of water quality pattern in river and online treatment, processed offline mainly builds treatment facility (as artificial swamp, waste water treatment engineering) by riverbank, river is introduced treatment facility inside, flow back in river course after purification, river is purified by diluting effect.But the mode of processed offline has takes up an area greatly, the deficiency of the aspects such as diversion consumption of power.Engineering practice proves, off-line diversion employing environmental engineering means process polluted river is the effective means of purifying river water quality.But this technique is because needing enough hydraulic detention times, often need to process plant area on a large scale, be difficult to obtain soil in urban river, this causes very large obstacle to the popularization of processed offline technology.Therefore the original position online treatment in river is more paid close attention to.
The method utilizing riverbed to build artificial swamp, more existing practices, such as gravel Contact oxidation technology, but common problem is regimen of river fails to be in optimum regime, in addition packing material size is selected less, and algal grown easily results in blockage, and river cannot flow through filler purifying area bed body smoothly, the mass transfer that substrate material in river and filler carries out pollutent and meta-bolites mainly through convection current and conduction exchanges, and wetland variation efficiency is lower.Therefore, exploitation meet investment low, take up an area less, the river course Constructed Wetland For Purifying technology of many-sided demand such as treatment capacity is large, treatment effect is good has important using value and realistic meaning.
Summary of the invention
The object of the present invention is to provide a kind of plan nature riverway water quality purification system.
For achieving the above object, plan nature riverway water quality purification system provided by the invention, river cross-section is based on trapezoidal duplex section, and in major trough, both sides are provided with some sections of filler purifying areas alternately, form pilot trench plane presenting cranky form, the sinuous degree of pilot trench is 1.3-1.5.The height of filler purifying area is higher than the draughty water level in river; River all flow through during dry season from pilot trench, and can retain certain depth of water.Major trough water amount is large, can meet flood passage requirement in flood season.
Filler purifying area is supremely successively filled with jackstone, machine rubble and top layer filler the end of by;
Jackstone spats is provided with between every two sections of filler purifying areas.
Described plan nature riverway water quality purification system, wherein, the length of every section of filler purifying area is 10-50m.
Described plan nature riverway water quality purification system, wherein, the filler purifying area of pilot trench side adopts ecology bag protection.
Described plan nature riverway water quality purification system, wherein, the jackstone in filler purifying area is the circular gravel of diameter 200-500mm, and the diameter of machine rubble is 50-80mm, and top layer filler is the thin cobble of diameter 10-20mm.
Described plan nature riverway water quality purification system, wherein, the top layer filler of filler purifying area is planted and is implanted with wetland plant, by the self-purification capacity in biological reinforced river that top layer filler grows, improve River water quality.The native plants that plant selection principle is mainly considered to be easy to manage, aesthetic values are high, growth cycle is long, vitality is strong, the mainly wetland plant such as reed, calamus, arrowhead.Effects of purification quality of the present invention does not rely on the effect of plant, so plant decays, period also can keep stable.
Described plan nature riverway water quality purification system, wherein, the two ends of every section of filler purifying area are filled with hard coal and zeolite respectively, to strengthen the removal efficiency to phosphorus, ammonia nitrogen.
Described plan nature riverway water quality purification system, wherein, the stem of every section of filler purifying area, adopts ecology bag to stack the weir formed across pilot trench, prevents filler purifying area from being affected contaminant removal efficiency by short stream.
The riverbed wet land system that the present invention is laid by overlapping on river is longitudinal, realizes water correction and the ecological recovery of polluted river.
Compared with existing river course artificial wet land water quality purification treatment technology, advantage of the present invention is:
(1) do not affect master stream flood discharge in flood season, ensure flood discharge safety,
(2) pilot trench edge adopts ecology bag to instead of traditional concrete structure construction, ecology bag is the sack processed for two-sided flatiron needle punched non-woven fabrics that starting material are made by polypropylene (PP), only permeable soil impervious, again can greening vegetation to plant friendliness, the present invention uses it for the side slope protection of sinuous compound cross section, and becomes the use of weir water conservancy diversion in pilot trench.
(3) intend the unpowered operation of nature river course passive type, and adopt current wetland structure to run, ensured that winter, plant also can keep stable during decaying.
(4) intend nature river course by building shoal and deep trouth on the basis of compound cross section, define dark-shallow, slow-anxious, the combination of the habitats such as blindage, this utilizes the recovery of river species diversity and the ecosystem very much.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of plan nature waterway system of the present invention.
Fig. 2 is the cross-sectional view of plan nature waterway system of the present invention.
Fig. 3 is that plan nature waterway system of the present invention implements project photograph.
Fig. 4 is that plan nature waterway system of the present invention implements project photograph.
Nomenclature is marked in accompanying drawing:
1 riverbank, 2 wetland plants, 3 flood stage, 4 draughty water levels, 5 filler purifying area-top layer fillers, 6 filler purifying area-machine rubbles, 7 filler purifying area-jackstones, 8 ecology bags, 9 jackstone spats, 10 hard coals, 11 zeolites, 12 major troughs, 13 pilot trench.
Embodiment
For water correction and the river ecosystem restoration target of polluting urban river, and ensure urban river flood passage many-sided demand such as safely, the present invention is by means of the configuration of compound cross section, built by the combination technique such as ecological engineering and environmental engineering and intend nature waterway system, realize water correction and the ecological recovery of polluted river.Technical scheme of the present invention mainly comprises following content:
Intending on nature river cross-section is trapezoidal duplex section structure, and the pilot trench 13 in compound cross section presents cranky shape in the plane, and its degree that wriggles is 1.3-1.5.
Major trough 12 both sides of the riverbed compound cross section on riverbank 1, are manually provided with some sections of filler purifying areas, and the length of each filler purifying area is 10-50m.Filler purifying area is made up of the filler of different-grain diameter, is supremely successively filled with jackstone 7 (diameter is the circular gravel of 200 ~ 500mm), machine rubble 6 (diameter is 50-80mm) and top layer filler 5 (diameter is the thin cobble of 10-20mm) end of by.Top, filler purifying area is positioned on the draughty water level 4 in river, is provided with hard coal 10 and zeolite 11 in the rear and front end of every section of filler purifying area.Be provided with jackstone spats 9 between every two sections of filler purifying areas, impact riverbed to prevent river.
The side of pilot trench 13 adopts ecology bag 8 to protect, and is separated in filler purifying area and pilot trench 13.The wetland plants 2 such as reed, calamus, arrowhead planted by the top layer filler 5 at top, filler purifying area.The stem of every section of filler purifying area adopts ecology bag 8 to stack the weir formed across pilot trench.
The height of filler purifying area of the present invention is higher than the draughty water level 4 in river, and river all flow through during dry season from pilot trench 13, and can retain certain depth of water.Major trough 12 water amount is large, can meet flood passage requirement in flood season when flood stage 3.
By river bed cross section form being transformed into shoal and deep trouth and the compound channel structure of depositing, and overlapping lays riverbed wet land system on river is longitudinal, by the physics of similar artificial swamp, chemistry, biological action, absorb, suspended substance, organic pollutant, nutritive salt, heavy metal and the microorgranic contaminant transformed in river, utilize the synergy of ecotechnology and biotechnology to achieve water purification in river channel type Artificial subsurface flow wetland system.Plan nature river course river water purifying system, while strengthening the self-purification capacity in river, improving River water quality, additionally provides abundant habitat, has active effect to the biodiversity restoration repairing section.The present invention has following significant advantage, operation that passive type is unpowered, improves the short stream of fluidised form, does not affect many-sided advantages such as master stream flood discharge in flood season, purification of water quality and ecological recovery be effective, be particularly useful for quantity of sand and mud little, flow velocity is small rivers or scenic rivers slowly.
Embodiment: dragon road, Beijing Shunyi river matter cleaning project
Long Daohe is positioned at airport new city Hou Shayu town, Shunyi District, northeast, areas of Beijing, Long Daohe originates from Wenyu River, and the about 1400m rear steering southeast is to inflow Luo Mahu eastwards, continues to be folded to south again after about 370m eastwards, through fiery sand road, import Wenyu River in southern side, the Xi Baixin village.The basin total area of Long Daohe is 21.0km
2.Long Daohe mainly assume responsibility for the rainwater Exclusion Tasks in rear Sha Yu center and area, both sides, and wherein Long Dao river epimere is except for drawing river, Wenyu River Shui Rulong road, also will meet flood passage requirement; Long Dao river hypomere has two poplar waterwayss, Hou Magou, large open drain to import along the line, and the Water in Rainwater Drainage that mainly assume responsibility for Hou Shayu center and area, both sides removes.
As river course for sewage discharge, imperial road river matter is black smelly.The river course dry-weather discharge of pending reparation is 860m
3/ d, the wide 5m in processing section river course, flow velocity is 0.1m/s, ordinary water level elevation 29.32m.For improving the water quality in Long Dao river, intend nature riverway water quality purification system in the hypomere construction of Long Dao river, engineering is laid and is seen Fig. 2.Original river course is carried out desilting by engineering, supremely circular gravel (diameter 200 ~ 500mm), machine rubble (diameter 50-80mm), thin cobble (diameter 10-20mm) is successively filled the end of by silt seam pad, top, filler purifying area is positioned on the draughty water level in river, and before and after the gravel bed system of each sinuous unit, two sections arrange biological ceramic particle and zeolite filler region.Build secondary river course compound cross section riverbed be that 4m is wide, side slope 1: 2.5, compound flat beach width 3m, be only the plan nature river course of 300 meters long in length, the ammonia nitrogen concentration in river, Ke Jianglong road is reduced to 3.1mg/L from 5.5mg/L.Simultaneously, intend nature river course and obtain better effects in the reparation of habitat, habitat quality index brings up to " good " grade (151 points) from preprosthetic " generally " (94 points) grade, improve benthic fauna, Hilsenhoff biotic index is down to 8.06 from 9.68, represents that water quality is tentatively improved.
Claims (4)
1. intend nature riverway water quality purification system for one kind, river cross-section is based on trapezoidal duplex section, in major trough, both sides are provided with some sections of filler purifying areas alternately, formed in plane and present cranky pilot trench, the filler purifying area of pilot trench side adopts ecology bag protection, and the height of filler purifying area is higher than the draughty water level in river;
Filler purifying area is supremely successively filled with jackstone, machine rubble and top layer filler the end of by; Wherein, jackstone is the circular gravel of diameter 200-500mm, and the diameter of machine rubble is 50-80mm, and top layer filler is the thin cobble of diameter 10-20mm;
Jackstone spats is provided with between every two sections of filler purifying areas;
The two ends of every section of filler purifying area are filled with hard coal and zeolite respectively, to strengthen the removal efficiency to phosphorus, ammonia nitrogen;
The stem of every section of filler purifying area, adopts ecology bag to stack the weir formed across pilot trench, prevents filler purifying area from being affected contaminant removal efficiency by short stream.
2. plan nature riverway water quality purification system according to claim 1, wherein, the length of every section of filler purifying area is 10-50m.
3. plan nature riverway water quality purification system according to claim 1, wherein, the sinuous degree of pilot trench is 1.3-1.5.
4. plan nature riverway water quality purification system according to claim 1, wherein, the top layer filler of filler purifying area is planted and is implanted with wetland plant.
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| CN201210237690.3A CN102730823B (en) | 2012-07-10 | 2012-07-10 | Simulative nature river course water purification system |
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| CN103011497B (en) * | 2012-11-27 | 2013-10-09 | 天津大学 | Backwash combination type farmland non-point source pollution cut-off purification system |
| CN104556589B (en) * | 2015-01-26 | 2017-01-25 | 中国海洋大学 | Combined purification system of reed wetland and composite porous medium ball as well as construction method and application of combined purification system |
| CN104695377B (en) * | 2015-03-23 | 2016-04-13 | 郑州大学 | A kind of construction process of middle-size and small-size linearization(-sation) meandering form |
| CN110468776B (en) * | 2019-08-19 | 2021-04-16 | 河海大学 | Device for enhancing river channel undercurrent exchange |
| CN110627215B (en) * | 2019-09-03 | 2022-01-28 | 生态环境部华南环境科学研究所 | Go into river slope trench ecological zone that moves back water and continuously purify utilization system |
| CN113321313B (en) * | 2021-06-29 | 2023-06-16 | 葛洲坝集团生态环保有限公司 | Composite habitat system for improving water quality of high-flow-rate high-sand-content river channel |
| CN116267479B (en) * | 2023-05-24 | 2023-08-11 | 北京建工环境修复股份有限公司 | Method for recovering water level and vegetation of peat marshland with drainage and drainage |
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| JP2001288731A (en) * | 2000-04-04 | 2001-10-19 | So Sekkei:Kk | Structure of dam and water quality purifying method for river water |
| JP2004293242A (en) * | 2003-03-28 | 2004-10-21 | Yasushi Tawara | Infilling method for water purification |
| CN101219834A (en) * | 2008-01-22 | 2008-07-16 | 河海大学 | Method for shaping ecological decontaminating type combination stream channel wet land system |
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