CN203451288U - Compound ecological ditch for treating surface source sewage in village - Google Patents

Compound ecological ditch for treating surface source sewage in village Download PDF

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Publication number
CN203451288U
CN203451288U CN201320536042.8U CN201320536042U CN203451288U CN 203451288 U CN203451288 U CN 203451288U CN 201320536042 U CN201320536042 U CN 201320536042U CN 203451288 U CN203451288 U CN 203451288U
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China
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ecological
unit
ditches
irrigation canals
canal
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CN201320536042.8U
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Chinese (zh)
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胡将军
余芃飞
霍子平
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武汉大学
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    • 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 utility model relates to a compound ecological ditch for treating surface source sewage in a village. The compound ecological ditch for treating the surface source sewage in the village comprises a grid, a sedimentation adjusting tank, a unit ecological ditch, a plant fence and a recycling device, wherein the unit ecological ditch comprises an ecological ditch unit (1) and a wet land ditch unit (2) which are alternately arranged, an interception water fall dam (3) is respectively arranged at each of the water outlets of the ecological ditch unit (1) and the wet land ditch unit (2), a triangular overflow weir is arranged at the upper end of each interception water fall dam (3), a water outlet is formed in the lower end of the interception water fall dam, and a water control valve (7) is arranged at the lower end of the interception water fall dam. The compound ecological ditch for treating the surface source sewage in the village has the advantages that an underflow type wet land ditch unit, a nitrogen and phosphorus interception box, the water fall overflow weirs, the plant fence and the like are introduced to form a compound ecological ditch system, the defects in the prior art are overcome, COD (chemical oxygen demand) can be stably reduced, removal rate of nitrogen and phosphorous pollutants is increased, and secondary pollution is prevented.

Description

A kind of complex ecological irrigation canals and ditches of processing face source, village sewage
Technical field
The utility model relates to Agricultural Water-Soil Engineering and sewage treatment area, specifically a kind of complex ecological irrigation canals and ditches of processing face source, village sewage.
Background technology
It has the typical feature of pollution of area source face source sewage, i.e. " discharge disperses, total amount is huge, situation is complicated ".From the Eleventh Five-Year Plan stage, China drops into research and the pilot that a large amount of financial resources manpowers launch source, opposite sewage control, in Dian Chi, Taihu Lake, Chaohu and Beijing area set up several large-scale demonstration projects and obtain a large amount of experiences and conclusion.In a large amount of research and pilot, face source sewage collecting technology mainly comprises sclerosis irrigation canals and ditches, ecological grass ditch and other irrigation canals and ditches pipelines; Face source sewage treatment process comprises ecological pond, artificial swamp, land percolation, ecological filter and the ecological canal etc. of dripping; Nitrogen phosphorus interception aspect expands the technology such as ecological permeable dam and preposition storehouse.These technology have formed the face source sewage control technical system of China jointly.
In the sewage disposal technology of concentrated face source, ecological pond and artificial swamp processing efficiency are higher but floor space is large and nitrogen phosphorus interdiction capability is not outstanding, and cost is relatively high; Land percolation technical finesse ability is stronger, and outstanding being still but subject to of nitrogen phosphorus interception result effect stopped up and shorter puzzlement of life-span; But the good construction of bio-trickling effect cost is large, working cost is high, cost performance is compared with low and be not suitable for promoting; Ecological canal is compared with other technologies, there is higher processing efficiency and less floor space, cheap cost, also have water conservancy and ecoscape concurrently and be worth, the most important thing is that ecological canal improves prospect and expansion is good, obtain in recent years deep research and development.
There have been a large amount of ecological canals newly-built and that form through transformation in China at present, and these ecological canals have played huge effect in the sewage intercept process of face source, but have found in actual use following problem:
(1) common ecological canal can reach more than 75% to the clearance of COD, but processing efficiency is unstable, temperature and the water yield are very large on the impact of processing efficiency, and the biochemical and general less than 50% of Adsorption efficiency when temperature is lower, when heavy rain, flood come almost cannot dispose of sewage temporarily;
(2) common ecological canal is not high to nitrogen and phosphorus pollutants removal efficiency, common ecological canal mainly relies on emergent and the bottom mud microbe circle in canal nitrogen and phosphorus pollutants is adsorbed and absorb, restriction due to phytomass, contact area, reaction efficiency and the residence time, total nitrogen (TN), total phosphorus (TP) clearance generally maintain 75% and 60% left and right, and processing efficiency also can decline gradually after system absorption is saturated;
(3) in ecological canal, growing plants is not effectively disposed after having absorbed a large amount of nitrogen and phosphorus pollutantses, the pollutent of absorption can be entered to water body with counter the releasing of form of leaching or alienation in the winter time or during heavy rain, causes secondary pollution.
Utility model content
The purpose of this utility model is to provide the clearance of a kind of steady removal COD, raising nitrogen and phosphorus pollutants and prevents the complex ecological irrigation canals and ditches of face source, the processing village sewage of secondary pollution.
A kind of complex ecological irrigation canals and ditches of processing face source, village sewage, comprise grid, sedimentary adjustive pool, modular ecological canal, hedgerow plant and reclamation set, described modular ecological canal comprises ecological canal unit 1 and wetland irrigation canals and ditches unit 2, two kinds of units alternately settings, water outlet place of ecological canal unit 1 and wetland irrigation canals and ditches unit 2 is equipped with interception drop dam 3, described interception drop 3 upper ends, dam are provided with triangle overflow weir, and lower end sets out the mouth of a river and water control valve 7 is set.
Described ecological canal unit 1, at the bottom of Qi Bianbi and pond, kind is implanted with humidogene emergent 9, at the bottom of canal, every the mixed laying nitrogen of 1-3m phosphorus, tackles case 8.
Described nitrogen phosphorus interception case 8 inside are filled with slag, and outside surface is plastics or metal geotechnique graticule mesh.
Described wetland irrigation canals and ditches unit 2, comprises Multi-layer ecological filtrate 5, and ecological filtrate 5 upper surface kinds are implanted with wetland plant 4; Each metafiltration material of described ecological filtrate 5 is according to particle diameter reduces gradually from top to bottom order setting.
The described modular ecological canal left and right sides is provided with hedgerow plant, hedgerow plant comprises cobble band 10, humidogene draft emergent 11 and wetland shrub 12, described cobble band 10 has the gradient of 3-10%, dense planting humidogene draft emergent 11 and wetland shrub 12 within the scope of outside 2 meters of cobble band 10.
Described humidogene emergent 9 and humidogene draft emergent 11, include but not limited to reed, cattail, Rhizoma Acori Calami, Canna generalis Bailey.
Described wetland shrub 12, includes but not limited to the cattail's spike, the rose of Sharon, Yucca gloriosa L., Chinese wistaria.
The utility model is achieved in that sewage, successively alternately through ecological canal unit and wetland irrigation canals and ditches unit in modular ecological canal, completes the removal to sewage principal pollutant in this course.
Sewage presents flowing full state in ecological canal unit, and because irrigation canals and ditches level is constructed without the blocking and stiction of emergent at the bottom of drop and nitrogen phosphorus interception case, canal, flow velocity is slowly and evenly in this unit for sewage.By precipitating action, the suspended particulate in sewage (SS) further carries particle organic pollutant precipitation, condense upon canal at the bottom of and in the emergent group and bed mud of sidewall.In bed mud and in water active zoogloea, aquatic microorganism by larger specific surface area absorption organic pollutant and by metabolism, organic pollutant is absorbed, transforms, assimilates into biomass complete the removal to biochemical oxygen demand (BOD) (BOD) under aerobic environment; Emergent and the rhizosphere biosphere that depends on its growth is by root system adsorb, act synergistically nitrogen-containing pollutant in planar water and partly contain phosphor contaminant, and by nitration reaction, anti-nitration reaction, suction phosphorus, releases respectively that phosphorus reaction is converted into nitrogen and organophosphorus completes removal; The inner slag of filling of nitrogen phosphorus interception case in water, first by the small particles of pollution thing in the vesicular structure absorption sewage of slag, then by a large amount of calcium oxide (CaO), aluminum oxide (Al in slag 2o 3) and ferric oxide (Fe 2o 3) isoreactivity composition fast with sewage in the stable phosphide such as electrodeless phosphorus formation calcium phosphate powder and be deposited on slag surface, only need 15min can complete the chemical process of reinforced phosphor-removing, after slag absorption is saturated, interception case is still possessed larger specific surface area and vesicular structure, still can be used as biofilter material, by microorganic adhesion, to complete sewage viscid and process, and a large amount of phosphides of surface deposition contribute to Biostatic growth and flouring simultaneously.This unit water outlet enters wetland irrigation canals and ditches unit by the overflow dam that drops.
Sewage completes reoxygenation process by forming water curtain and impacting bubbling before drop enters wetland irrigation canals and ditches unit, directly drenches in ecological filtrate subsequently.Sewage presents level, vertical composite underflow state in ecological filter material layer.First by the obstruction of each layer of ecological filtrate and the effect that screens out, tackle respectively the organic contamination composition granule of different-grain diameter, then the microorganism adsorption of growing nonparasitically upon another plant in filtrate and filtrate transformed removal by bacteria metabolism.In this course, the Wetland Communities of filter material surface can and expand wetland total biomass by flourishing root system strengthening reoxygenation on the one hand, root system biosphere can complete the biomass in absorption, absorption, conversion the supplementary deep layer filtrate to nitrogen and phosphorus pollutants on the other hand, makes this unit form the ecosphere that improves of " emergent-miniature aquatic animals-microflora ".This unit water outlet, by the water outlet water of overflow drop lower end, dam, enters next unit.
The advantage that the utility model is processed the complex ecological irrigation canals and ditches of face source, village sewage is: the present invention forms complex ecological sewerage by introducing undercurrent type wetland irrigation canals and ditches unit, nitrogen phosphorus interception case, drop overfall dike and hedgerow plant etc., overcomes defect of the prior art;
Alternative expression arranges common ecological canal unit and wetland irrigation canals and ditches unit, not only can be by the adaptability that regulates different units water-out manners consolidation system to impact water quality and quantity, and while guaranteeing sewage by two adjacent cells, in aerobic and state oxygen deprivation, the alternately variation of this oxygen level is conducive to removing of nitrogen and phosphorus pollutants successively.By drop and the reoxygenation of root system of plant and the precipitating action of common ecological canal unit, guarantee that complex ecological irrigation canals and ditches unit is difficult for stopping up simultaneously, reduce system failure rate.Meanwhile, homomorphosis is constructed in two unit, can freely change various cell locations to reach optimum handling effect according to the variation of season, temperature, water quantity and quality;
Hedgerow plant is along ecological canal construction, cobble band and the next-door neighbour's ecological canal setting of dense planting vegetation zone, serve as on the one hand ecological revetment protection ecological canal, simultaneously when the spill-over of the ecological canal water yield or flood arrival, hedgerow plant can form wetland buffer strip with ecological canal, Gu soil is controlled flood and stop sewage outflow to cause secondary pollution; And when heavy rain, hedgerow plant not only can be avoided heavy rain to carry foreign matter secretly by the effect of blocking of cobble band and root system of plant cauline leaf entering irrigation canals and ditches and result in blockage or pollute, also can evenly cushion the heavy rain water yield, protection ecological canal system.The association system that hedgerow plant and ecological canal unit form can form comparatively high ecologic community, and enhanced sewage can also form good littoral ecoscape when processing, and regulates local water and soil weather.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model is processed the complex ecological irrigation canals and ditches of face source, village sewage.
Fig. 2 is the cross section structure schematic diagram of wetland irrigation canals and ditches unit.
In figure, 1 is ecological canal unit, and 2 is wetland irrigation canals and ditches unit, and 3 is interception drop dam, and 4 is wetland plant, 5 is ecological filtrate, and 6 is impervious concrete, and 7 is water control valve, and 8 is nitrogen phosphorus interception case, 9 is humidogene emergent, and 10 is cobble band, and 11 is humidogene draft emergent, and 12 is wetland shrub.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
The utility model is processed the complex ecological irrigation canals and ditches of face source, village sewage, comprise grid, sedimentary adjustive pool, modular ecological canal, hedgerow plant and reclamation set, gulf, the village sewage of collecting through pipe duct and irrigation and drainage etc. enter system, successively reuse or discharge after grid, sedimentary adjustive pool, modular ecological canal and reclamation set.
Described grid, sedimentary adjustive pool are constructed integrated square pond by concrete, grid pitch 2-10mm, and sedimentary adjustive pool degree of depth 1.5m, lays HDPE anti seepage membrane.Grid goes out floating matter and the macrobead rubbish in decontaminated water by filtering effect.Sedimentary adjustive pool is stablized the sewage quality water yield on the one hand, suspended substance (SS) is precipitated, by the longer residence time, form amphimicrobian condition simultaneously, biochemical action by aerobic-anaerobic microbe is small-particle organism by the macrobead organic pollutant acidication in sewage, reduce sewage biochemical oxygen demand (BOD) (BOD) lifting sewage biodegradability, complete by overflow weir, entering complex ecological irrigation canals and ditches unit with the sewage of processing and carry out purifying treatment.
Described modular ecological canal, comprises that ecological canal unit 1 and wetland irrigation canals and ditches unit 2(are as shown in Figure 1), two kinds of units alternatelies connect.Each cell end arranges interception drop dam 3, and triangle overflow weir is built in upper end, and lower end is outputed the mouth of a river and water control valve 7 is set; If necessary, the mouth of a river also can be outputed in interception drop 3 middle parts, dam.
Ecological canal unit 1 is constructed by impervious concrete 6, and cross section is up big and down small inverted trapezoidal, the wide 0.5-1.0m in canal lower end, the dark 0.5m of canal, Bian Bi inclination angle 60 o, lay environmental protection ornamental slab for paving the floor.Canal length changes and does not get 3-10m not etc. according to local physical features.
Ecological canal unit 1, at the bottom of Bian Bi and pond, artificial growth original inhabitants humidogene emergent 9, forms nitrogen phosphorus interception case 8 at the lattice cage of filling out slag at the bottom of canal in the mixed laying of 1.5m; Nitrogen phosphorus interception case 8 is of a size of the rectangular structure of 0.5m * 0.5m * 0.3m.
Nitrogen phosphorus interception case 8 surfaces are plastics or metal geotechnique graticule mesh, and slag or modified steel scoria 174kg can be filled in inside.According to ecological canal system day processing water yield 50m 3, phosphorus content 20mg/L remove 90% in water, slag absorption saturation capacity is that 2.5mg/L calculates, every interception case is used that within approximately 2 years, to reach absorption saturated.After reaching capacity, can change immediately interception case, also can make as ecological filler, as microbial nutrition base, to use in its stagnant water.
Described wetland irrigation canals and ditches unit 2, as shown in Figure 2: fill up the Multi-layer ecological filtrate 5 that gravel, haydite and cinder form, from top to bottom particle diameter is decreased to 3mm by 15mm.
Ecological filtrate 5 surface grafting original inhabitants wetland plants 4, can be used artificial feeding base if necessary.
Hedgerow plant sectional view is as shown in Figure 2: cobble band 10 width 0.5m, are used particle diameter 3-10cm cobble to lay, and keep the gradient of 3%-10%.By comprising dense planting humidogene draft emergent 11 and wetland shrub 12 within the scope of the outside 2m of cobble band 10, jointly form hedgerow plant.Hedgerow plant is along ecological canal construction, cobble band 10 and the next-door neighbour's ecological canal setting of dense planting vegetation zone, serve as on the one hand ecological revetment protection ecological canal, simultaneously when the spill-over of the ecological canal water yield or flood arrival, hedgerow plant can form wetland buffer strip with ecological canal, Gu soil is controlled flood and stop sewage outflow to cause secondary pollution; And when heavy rain, hedgerow plant not only can be avoided heavy rain to carry foreign matter secretly by the effect of blocking of cobble band and root system of plant cauline leaf entering irrigation canals and ditches and result in blockage or pollute, also can evenly cushion the heavy rain water yield, protection ecological canal system.The association system that hedgerow plant and ecological canal unit form can form comparatively high ecologic community, and enhanced sewage can also form good littoral ecoscape when processing, and regulates local water and soil weather.
Especially, the emergent in the utility model comprises reed, cattail, Rhizoma Acori Calami, Canna generalis Bailey and local autochthonous flora, and shrub comprises the cattail's spike, the rose of Sharon, Yucca gloriosa L., Chinese wistaria etc.Seed selection increases autochthonous flora ratio as far as possible and avoids introducing wetland plant and destroy the local existing eubiosis, and planting proportion is determined according to local condition.
The complex ecological irrigation canals and ditches that the utility model is processed face source, village sewage can arrange overflow weir by end, connection value field irrigation pool canal and take in water body and deversoir is set respectively, and when dry season, tail water enters pool canal reuse, and during rainy season, directly discharge enters natural water.Artificial swamp also can be set up in area with good conditionsi, prepositive library system carries out advanced treatment of wastewater.
In annual autumn, the plant of complex ecological irrigation canals and ditches unit and hedgerow plant need to be gathered in, and by anaerobic composting, the nursing of fowl poultry, economic plants deep processing, plant is disposed, to prevent nitrogen and phosphorus pollutants secondary pollution, realize environmental economical profit feedback in the people simultaneously.

Claims (5)

1. the complex ecological irrigation canals and ditches of processing face source, village sewage, comprise grid, sedimentary adjustive pool, modular ecological canal, hedgerow plant and reclamation set, it is characterized in that: described modular ecological canal comprise ecological canal unit (1) with wetland irrigation canals and ditches unit (2), two kinds of units alternately settings, (1) (3) water outlet place is (2) equipped with interception drop dam with wetland irrigation canals and ditches unit in ecological canal unit, (3) described interception drop dam is provided with triangle overflow weir in upper end, and lower end sets out the mouth of a river and water control valve is set (7).
2. the complex ecological irrigation canals and ditches of face source, processing as claimed in claim 1 village sewage, is characterized in that: at the bottom of described ecological canal unit ⑴,Qi Bian Bi and pond, (9) kind is implanted with humidogene emergent, at the bottom of canal, every the mixed laying nitrogen of 1-3m phosphorus, tackle case (8).
3. the complex ecological irrigation canals and ditches of face source, processing as claimed in claim 2 village sewage, is characterized in that: (8) described nitrogen phosphorus interception case is filled with slag in inside, and outside surface is plastics or metal geotechnique graticule mesh.
4. the complex ecological irrigation canals and ditches of face source, processing as claimed in claim 1 village sewage, is characterized in that: (5) (2) described wetland irrigation canals and ditches unit, comprise Multi-layer ecological filtrate, and (4) ecological filtrate (5) upper surface kind is implanted with wetland plant; Described ecological filtrate each metafiltration material is (5) according to particle diameter reduces gradually from top to bottom order setting.
5. the complex ecological irrigation canals and ditches of face source, processing as claimed in claim 1 village sewage, it is characterized in that: the described modular ecological canal left and right sides is provided with hedgerow plant, hedgerow plant comprise cobble band (10), humidogene draft emergent (11) with wetland shrub (12), (10) described cobble band has the gradient of 3-10%, cobble band (10) within the scope of outside 2 meters dense planting humidogene draft emergent (11) with wetland shrub (12).
CN201320536042.8U 2013-08-30 2013-08-30 Compound ecological ditch for treating surface source sewage in village CN203451288U (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104631562A (en) * 2015-01-29 2015-05-20 无锡昊瑜节能环保设备有限公司 Underground water supplementing pool for multiple tandem green landscape
CN104944590A (en) * 2015-06-24 2015-09-30 浙江海洋学院 Rural non-point source sewage treatment multi-layer ladder seepage drainage and non-point source sewage treatment process
CN105084548A (en) * 2015-09-18 2015-11-25 合肥工业大学 Efficient anti-blocking constructed wetland based on novel packed bed
CN105565589A (en) * 2015-12-14 2016-05-11 哈尔滨工业大学 Built-in biochemical-ecological system based on in-river rainwater runoff purification river bank
CN106167311A (en) * 2016-07-26 2016-11-30 昆明理工大学 A kind of technique utilizing slag processing rainwater
CN108423832A (en) * 2018-04-02 2018-08-21 河海大学 A kind of multi-joint ecological purification pond of canine tooth split type
CN109328680A (en) * 2018-09-27 2019-02-15 仲恺农业工程学院 A kind of soil property ecological canal method of construction
CN110028150A (en) * 2019-04-28 2019-07-19 江苏省中国科学院植物研究所 A kind of modularization coupling sewage disposal system
CN110655194A (en) * 2019-11-15 2020-01-07 南京大学 Construction method of lateral seepage-overflow system under flood bank type river dam
WO2020114039A1 (en) * 2018-12-04 2020-06-11 浙江大学 System and method for intercepting nitrogen and phosphorus in countryside landscape type ecological ditch

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104631562B (en) * 2015-01-29 2016-05-18 佛山市顺德区顺茵绿化设计工程有限公司 The underground moisturizing pond of the Afforestation Landscape of multiple series connection
CN104631562A (en) * 2015-01-29 2015-05-20 无锡昊瑜节能环保设备有限公司 Underground water supplementing pool for multiple tandem green landscape
CN104944590A (en) * 2015-06-24 2015-09-30 浙江海洋学院 Rural non-point source sewage treatment multi-layer ladder seepage drainage and non-point source sewage treatment process
CN105084548A (en) * 2015-09-18 2015-11-25 合肥工业大学 Efficient anti-blocking constructed wetland based on novel packed bed
CN105084548B (en) * 2015-09-18 2017-06-30 合肥工业大学 A kind of high efficient block artificial swamp based on new packing bed
CN105565589A (en) * 2015-12-14 2016-05-11 哈尔滨工业大学 Built-in biochemical-ecological system based on in-river rainwater runoff purification river bank
CN106167311A (en) * 2016-07-26 2016-11-30 昆明理工大学 A kind of technique utilizing slag processing rainwater
CN106167311B (en) * 2016-07-26 2019-02-05 昆明理工大学 A kind of technique using slag processing rainwater
CN108423832A (en) * 2018-04-02 2018-08-21 河海大学 A kind of multi-joint ecological purification pond of canine tooth split type
CN109328680A (en) * 2018-09-27 2019-02-15 仲恺农业工程学院 A kind of soil property ecological canal method of construction
WO2020114039A1 (en) * 2018-12-04 2020-06-11 浙江大学 System and method for intercepting nitrogen and phosphorus in countryside landscape type ecological ditch
CN110028150A (en) * 2019-04-28 2019-07-19 江苏省中国科学院植物研究所 A kind of modularization coupling sewage disposal system
CN110655194A (en) * 2019-11-15 2020-01-07 南京大学 Construction method of lateral seepage-overflow system under flood bank type river dam

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