CN104773914A - Collecting and treating device for rural disordered-emission sewage - Google Patents

Collecting and treating device for rural disordered-emission sewage Download PDF

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Publication number
CN104773914A
CN104773914A CN201510150254.6A CN201510150254A CN104773914A CN 104773914 A CN104773914 A CN 104773914A CN 201510150254 A CN201510150254 A CN 201510150254A CN 104773914 A CN104773914 A CN 104773914A
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China
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aerobic
sewage
water
water reservoir
collection
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CN201510150254.6A
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Chinese (zh)
Inventor
李先宁
刘秋菊
吴磊
吕锡武
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Southeast University
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Southeast University
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Priority to CN201510150254.6A priority Critical patent/CN104773914A/en
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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 invention discloses a collecting and treating device for rural disordered-emission sewage. The collecting and treating device comprises an ecological ditch for collecting the sewage, and further comprises a pair of reservoirs for collecting and precipitating the sewage collected by the ecological ditch and a pair of constructed wetlands for treating the sewage overflowed through the overflow openings, wherein overflow openings are formed in the side surfaces of the reservoirs; each constructed wetland comprises an aerobic section and an anaerobic section, a horizontal gas guide tube is arranged in a bottom base body in the aerobic section; a plurality of vertical gas guide tubes communicated with the horizontal gas guide tube are connected on the horizontal gas guide tube; aquatic plants are planted on the bottom base body; and a sealing film is arranged on the anaerobic section. According to the device disclosed by the invention, by strengthening a nitrification and denitrification nitrogen-removal process, the device has the characteristics of effectively reducing pollutant concentration, reducing rural lake inlet pollution load, and separately utilizing the rural terrain, realizes artesian flow, and does not need an extra power device, the planted plants are aquatic vegetables, so that the economic benefits are achieved while the water is purified.

Description

The collection and treatment device of the unordered sewage effluent in rural area
Technical field
The present invention relates to the apparatus and method of the unordered sewage effluent in a kind of collection and treatment village and Initial Runoff, be specially adapted to collection and the process of the initial rainfall runoff in the village of underlying factor complexity, prevent the nitrogen in early-stage rainwater, phosphorus with runoff in a large number to water body migration, aggravation body eutrophication.Belong to field of environment pollution control.
research background
Along with effective improvement of town sewage and industrial point source, the pollution situation that life in the countryside and agricultural run-off cause highlights gradually.Rural residential area underlying factor is complicated, not only has the family plot, meadow, nonirrigated farmland and forest land etc. dankly, also has road, roofing, cement garden etc. dankly, can not have the feature in rural area and cities and towns concurrently; In rural settlements, rubbish abandons everywhere, all kinds of gray-water is arbitrarily splashed, the feces of livestock and poultry negligence of management of traditional family-raise, and garbage collection points produce percolate, all causes the accumulation of pollutent on earth's surface and certain confluxing.When catchment occurs, the footpath that rainfall produces fails to be convened for lack of a quorum migration pollution of area source, washes away the pollutent of earth's surface accumulation, produces high-pollution load fast, causes life residential district nitrogen, phosphorus transfer, finally affects the quality of water environment of receiving water body.Therefore, research and development is needed to be suitable for the Interception Technology of the unordered sewage effluent in Rural areas and rainfall initial stage rainwash.
China has a large amount of irrigation canals and ditches, wetland for rainfall runoff process, but in actual motion, there is the problems such as floor space is large, processing efficiency is not high more.Patent No. CN102409718A announces the apparatus and method of village, a kind of collection and treatment river network early-stage rainwater, adopt irrigation canals and ditches, storage pool and side slope cross flow formula Constructed Wetland For Purifying runoff, but this system needs the power-equipments such as pump, and purification efficiency is not high.For this reason, the present invention adopts the wet land system of ecological canal and artificial-strengthening nitration denitrification to improve purification efficiency, and utilizes ground, rural area potential condition to realize sewage natural flowing, reduces energy consumption.
Summary of the invention
The object of the invention is to, for features such as the unordered sewage effluent dispersiveness in rural area, randomness, disguise, fluctuations, provide a kind of unordered sewage effluent and the Initial Runoff collection processing system implementing that are applicable to Rural areas.
The collection and treatment device of the unordered sewage effluent in a kind of rural area, comprise the ecological canal of the described sewage that confluxes, it is characterized in that, also comprise the water reservoir that the sewage that confluxes through described ecological canal for a pair carries out collecting and precipitating, described water reservoir upper end is provided with overflow port; And the artificial swamp that the sewage overflowed through described overflow port for a pair carries out processing, this artificial swamp comprises aerobic section and anaerobism section, the bottom level of described aerobic section is different with the bottom level of anaerobism section, and reduce from the one end be connected with described water reservoir to the other end bottom level, horizontal airway is provided with in described aerobic section inner bottom part matrix, described horizontal airway is connected with the many vertical airways be communicated with described horizontal airway, planting aquatic plants in described base substrate, is provided with a sealing membrane in described anaerobism section.
Described aerobic section is two sections, arrange between two sections of aerobic sections one section anaerobism section.
Ecological canal end and water reservoir joint arrange baffle plate.
Described water reservoir is built in underground, and top arranges cover plate; Water reservoir water-in is positioned at top, installs the valve controlling flow at described overflow port, and water outlet is from flowing to artificial swamp.
Artificial swamp every section front end arranges tracery wall water distribution, adds gravel in tracery wall, and catchment area is established in rear end.
The bottom substrates of described ecological canal and artificial swamp comprises cinder, gravel and coarse sand.
One or more in the matrix such as wetland underfill cinder, gravel, coarse sand, aerobic section lays PVC perforated pipe, and lower floor is embedded in Wetland Substrate, vertical PVC perforated pipe and atmosphere, top plantation aquatic vegetable; Anaerobism section is formed by plastic film wrapped matrix, and top is kind of plant not.
The rainfall Initial Runoff intercepting system that the feature that the present invention is directed to unordered sewage effluent is arranged, ecological canal is adopted to collect unordered sewage effluent and the rainfall initial stage rainwash in village, plant and substrate material is utilized tentatively to tackle purification to particulate matter, remove most of particulate form pollutent in sewage, increase the residence time; Adopt water reservoir flood peak clipping flow, reduce runoff to the impact of follow-up wetland, remove particulate matter further simultaneously; Aquatic vegetable type artificial swamp forms " using aerobic-anoxia-aerobic " section by laying the measure such as vent-pipe, plastic film wrapped matrix, improve wetland dissolved oxygen situation, thus strengthening nitration denitrification denitrogenates process, effectively reduces Pollutant levels, reduce rural area and enter lake pollution load; Apparatus of the present invention make full use of rural area physical features feature, and realize gravity flow, without the need to extra power set, institute's kind of plant is aquatic vegetable, has economic benefit concurrently while purifying water.
The present invention is collected by runoff and the ecological canal of primary treatment, the underground conservation pool automatically collecting Initial Runoff and three sections of staged side slope artificial swamp three parts form.Rainfall Initial Runoff is collected by ecological canal, preliminary treatment conveying, and the Initial Runoff relying on the baffle plate of irrigation canals and ditches and water reservoir junction automatically to retain front 9mm enters underground conservation pool, and the early-stage rainwater runoff lower than baffle plate is trapped and enters water reservoir.After water reservoir is full, after the water surface of irrigation canals and ditches rises to height of baffle plate gradually, stormwater overflow, enters neighbouring water body by diversion irrigation canals and ditches.Water reservoir is provided with from head piece, and rainwater gravity flow enters wetland, by Valve controlling flow, after purification, enters neighbouring water body.Aquatic vegetable type artificial swamp, Riparian buffers is utilized to build using aerobic-anoxia-aerobic three sections of stepwise artificial wetlands, wetland front end, every rank is by tracery wall water distribution uniformity, wetland plantation aquatic vegetable, nitrogen, phosphorus and the organic pollution materials carried is made to be blocked, to adsorb, to degrade and to absorb, nitrogen, phosphorus reduction rate reach the target of 60%, and vegetables produce certain economic benefit.
Accompanying drawing explanation
Fig. 1---structural representation of the present invention;
Fig. 2---the cross-sectional view of water reservoir of the present invention;
The plan structure schematic diagram of Fig. 3---artificial swamp of the present invention;
Fig. 4---artificial swamp aerobic section aeration structure sectional view of the present invention.
Embodiment
As shown in Figure 1, collect and process the device of the unordered sewage effluent in rural area and rainfall Initial Runoff, comprise ecological canal 1, water reservoir 2 and " aerobic 3-anaerobism 4-aerobic 5 " syllogic aquatic vegetable type artificial swamp unit, ecological canal is connected with water reservoir through water inlet pipe.
As shown in Figure 2, in water reservoir 2 Shi Dui village, original swag etc. carries out reconstruction and forms.Preferably, water reservoir water-in 6 is positioned at top, and bottom sets out the mouth of a river 7, and mounted valve controls flow, and retaining pool inner water is from flowing to wetland, and water outlet enters water distributing area, wetland aerobic section front end 8.Wetland influent load is about 0.3m 3/ m 2d, water reservoir is built in underground, and top arranges cover plate, does not affect ground normal pass and use.
As shown in Figure 3, artificial swamp " using aerobic-anoxia-aerobic " three rank are built in Riparian buffers, underfill matrix successively, and aerobic section lays PVC perforated pipe, and lower floor is embedded in Wetland Substrate, vertical PVC perforated pipe and atmosphere, top plantation aquatic vegetable; Anaerobism section is formed by plastic film wrapped matrix, and top is kind of plant not; Wetland front end, every rank is by tracery wall 10 water distribution uniformity, and rear end arranges overflow port 11 overflow to catchment area 9.As shown in Figure 4, aerobic section lays PVC perforated pipe 14, and lower floor is embedded in Wetland Substrate, vertical PVC perforated pipe 14 and atmosphere, top plantation aquatic vegetable, and summer is mater convolvulus, winter is Chinese celery.Anaerobism section not planting plants.
The ecological intercepting system of the unordered sewage effluent in village comprises ecological canal, water reservoir and " aerobic 3-anaerobism 4-aerobic 5 " syllogic aquatic vegetable type artificial swamp three unit, each unit is connected successively by water inlet pipe and water outlet pipe, the inner body front end, every section of pond of wetland arranges water distributing area 8, by tracery wall water distribution uniformity 10, catchment area, rear end 9 arranges overflow port 11, overflow is to hypomere water distributing area, and the overflow of wetland outlet water at tail end enters neighbouring water body to catchment area by rising pipe 13.The present invention makes full use of rural area geographical advantage, transforms, realize current natural flow in system to original hole, the pool, irrigation canals and ditches etc., by improving the inner dissolved oxygen situation of wetland, improves ecological intercepting system purification efficiency further.
In ecological canal Shi Dui village, original escape canal carries out clearing up, dredges, reconstructs and reinforced irrigation canals and ditches both sides, canal bottom sloping is 1/3000 ~ 1/2000, trench bottom width 10 ~ 30cm, trench depth 30 ~ 55cm, bottom of trench fills one or more in the matrix such as cinder, gravel, coarse sand, at the bottom of canal, canal wall artificial growth cash crop, connect 20cm place before water reservoir baffled, maintenance irrigation canals and ditches water level.
The method of the employing unordered sewage effluent in said apparatus collection and treatment village and rainfall Initial Runoff is: village rainfall is confluxed to ecological canal, ecological canal is through plant, matrix, microflora primary action, remove part granulating material and nitrogen phosphorus, reduce runoff velocity simultaneously, increase the residence time; Water precipitates after flowing to water reservoir further, and effective flood peak clipping flow, current flow into follow-up wetland through bottom from head piece.Irrigation canals and ditches are connected with water reservoir is vertical, in the ecological canal of junction, baffle plate is set, bottom of trench flushes with water reservoir Chi Ding, after water reservoir water is full, the water surface in ecological canal rises gradually, gone out by baffle plate overflow, now because the water in ecological canal and the water in water reservoir do not have Convention diffusion, what water reservoir was collected is the rainwater of initial stage high pollution substrate concentration.Water in water reservoir from flowing to wetland aerobic section 3 by bottom water outlet 7, is adopted natural ventilation pipe to increase aerobic section dissolved oxygen concentration, improves Nitrification intensity, for follow-up denitrification provides sufficient nitrogenous source, effectively reduces organic concentration in water inlet simultaneously; Water outlet is through catchment area 9 overflow to anaerobism section 4, and anaerobism end forms anaerobic environment by plastic film wrapped matrix, intensified anti-nitrated effect, fully removes nitric nitrogen in water; Follow-up aerobic section 5 removes Organic substance in water further, and water outlet is compiled in end catchment area 9 by overflow port 11, enters neighbouring water body to wetland end by rising pipe 13.Aerobic/anaerobic in artificial swamp/aerobic environmental benefits replaced in the carrying out of nitrification and denitrification, thus improves nitric efficiency.

Claims (6)

1. the collection and treatment device of the unordered sewage effluent in rural area, comprise the ecological canal of the described sewage that confluxes, it is characterized in that, also comprise the water reservoir that the sewage that confluxes through described ecological canal for a pair carries out collecting and precipitating, described water reservoir side is provided with overflow port; And the artificial swamp that the sewage overflowed through described overflow port for a pair carries out processing, this artificial swamp comprises aerobic section and anaerobism section, the bottom level of described aerobic section is different with the bottom level of anaerobism section, and reduce from the one end be connected with described water reservoir to the other end bottom level, horizontal airway is provided with in described aerobic section inner bottom part matrix, described horizontal airway is connected with the many vertical airways be communicated with described horizontal airway, planting aquatic plants in described base substrate, is provided with a sealing membrane in described anaerobism section.
2. collection and treatment device according to claim 1, is characterized in that: described aerobic section is two sections, arrange between two sections of aerobic sections one section anaerobism section.
3. collection and treatment device according to claim 1, is characterized in that: ecological canal end and water reservoir joint arrange baffle plate.
4. collection and treatment device according to claim 1, is characterized in that: described water reservoir is built in underground, and top arranges cover plate; Water reservoir water-in is positioned at top, installs the valve controlling flow at described overflow port, and water outlet is from flowing to artificial swamp.
5. collection and treatment device according to claim 1, is characterized in that: artificial swamp every section front end arranges tracery wall water distribution, adds gravel in tracery wall, and catchment area is established in rear end.
6. collection and treatment device according to claim 1, is characterized in that: the bottom substrates of described ecological canal and artificial swamp comprises cinder, gravel and coarse sand.
CN201510150254.6A 2015-04-01 2015-04-01 Collecting and treating device for rural disordered-emission sewage Pending CN104773914A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105060612A (en) * 2015-07-17 2015-11-18 中国环境科学研究院 Constructed wetland-ecological ditch system for treating scattered piggery washing wastewater
CN105314799A (en) * 2015-12-01 2016-02-10 亿利资源集团有限公司 Storage-regulation and purification system
CN105399211A (en) * 2015-12-19 2016-03-16 西安建筑科技大学 Control method of water seal and flow uniformity for modular constructed wetlands
CN106869238A (en) * 2017-03-17 2017-06-20 四川大学 A kind of mountain region sponge city three-stage rainwater-collecting purification utilization system
CN106865891A (en) * 2017-03-06 2017-06-20 常州大学 A kind of rice field recovery of nitrogen and phosphorus and pollution of area source control system
CN108821502A (en) * 2018-05-31 2018-11-16 安徽美自然环境科技有限公司 A kind of multiple artificial ecology buffering barrier for farmland sewage treatment
CN110407401A (en) * 2019-06-28 2019-11-05 中冶华天南京工程技术有限公司 Intermittent aerating formula ecology trench system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008127479A1 (en) * 2007-04-13 2008-10-23 Modular Wetland Systems, Inc. In line wetland water treatment system and method
CN102531294A (en) * 2012-02-10 2012-07-04 同济大学 All-terrain subsurface flow constructed wetland combination system and application thereof
CN103395930A (en) * 2013-07-31 2013-11-20 武汉大学 Ecological slope protection type sewage land infiltration system and ecological slope protection type sewage land infiltration method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008127479A1 (en) * 2007-04-13 2008-10-23 Modular Wetland Systems, Inc. In line wetland water treatment system and method
CN102531294A (en) * 2012-02-10 2012-07-04 同济大学 All-terrain subsurface flow constructed wetland combination system and application thereof
CN103395930A (en) * 2013-07-31 2013-11-20 武汉大学 Ecological slope protection type sewage land infiltration system and ecological slope protection type sewage land infiltration method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105060612A (en) * 2015-07-17 2015-11-18 中国环境科学研究院 Constructed wetland-ecological ditch system for treating scattered piggery washing wastewater
CN105060612B (en) * 2015-07-17 2017-06-06 中国环境科学研究院 A kind of artificial swamp ecological canal system for processing dispersion pig flushing waste water
CN105314799A (en) * 2015-12-01 2016-02-10 亿利资源集团有限公司 Storage-regulation and purification system
CN105399211A (en) * 2015-12-19 2016-03-16 西安建筑科技大学 Control method of water seal and flow uniformity for modular constructed wetlands
CN105399211B (en) * 2015-12-19 2018-07-17 西安建筑科技大学 A kind of modularized artificial wetland Water tight and flow uniformity control method
CN106865891B (en) * 2017-03-06 2020-03-20 常州大学 Control system for nitrogen and phosphorus recovery and non-point source pollution in rice field
CN106865891A (en) * 2017-03-06 2017-06-20 常州大学 A kind of rice field recovery of nitrogen and phosphorus and pollution of area source control system
CN106869238B (en) * 2017-03-17 2019-04-09 四川大学 A kind of massif sponge city three-stage rainwater-collecting purification utilization system
CN106869238A (en) * 2017-03-17 2017-06-20 四川大学 A kind of mountain region sponge city three-stage rainwater-collecting purification utilization system
CN108821502A (en) * 2018-05-31 2018-11-16 安徽美自然环境科技有限公司 A kind of multiple artificial ecology buffering barrier for farmland sewage treatment
CN110407401A (en) * 2019-06-28 2019-11-05 中冶华天南京工程技术有限公司 Intermittent aerating formula ecology trench system

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