CN105130090A - River ditch sewage ecological strengthening self cleaning method - Google Patents

River ditch sewage ecological strengthening self cleaning method Download PDF

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Publication number
CN105130090A
CN105130090A CN201410249948.0A CN201410249948A CN105130090A CN 105130090 A CN105130090 A CN 105130090A CN 201410249948 A CN201410249948 A CN 201410249948A CN 105130090 A CN105130090 A CN 105130090A
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China
Prior art keywords
weir
base
yan
wetland
river
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CN201410249948.0A
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Chinese (zh)
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蒋寿悟
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蒋寿悟
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Priority to CN201410249948.0A priority Critical patent/CN105130090A/en
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Abstract

A river ditch sewage ecological strengthening self cleaning method is as follows: river ditch sewage passes through bio-based weir wetland oxidation pond comprising multi stage base weirs, each stage base weir comprises a levee slope biological vegetation or a percolationmaterial, landscape aeration, sprinkler irrigation aeration, a wetland, a base weir and a base weir front sedimentation ditch and a base weir rear sedimentation ditch, and a horizontal plane between the two stage base weirs is located at the position of 1 / 2-2 / 3 of the height of an upper-stage base weir and the top of a lower-stage base weir, and the sedimentation ditches have the depth of 0.5 m and width of 1 m.

Description

A kind of intensified ecological sewage decontaminating method for rivers, channels and ditches
Technical field
The invention belongs to sewage disposal technology, more precisely about the ecological treatment method of river irrigation canals and ditches water pollution.
Background technology
Along with the development of industrial or agricultural and improving constantly of living standards of the people, the contradiction between environmental pollution and Economic development becomes and becomes increasingly conspicuous, wherein the public hazards that cause of water pollution, and countries in the world are all paid much attention to, and propose many Preventing Countermeasures and treatment technology.
Set up large-scale wastewater treatment plant at present, sewage concentrates biochemical treatment to be the method generally adopted in the world.The problems such as but it is high that these class methods exist input, cost is large, and floor space is wide, and the restraining factors that treatment effect is subject to are many, and Drinking water quality is unstable, are difficult to apply for the area that economic strength is poor.Now every year in some rivers, discharge a large amount of plant effluents and sanitary sewage.
Summary of the invention
The object of the invention is the deficiency overcoming prior art, propose one and invest little in conjunction with drainage basin fader engineering construction, high efficiency, makes full use of the place in river course, becomes to receive the purifying method that the river of dirt, discharging pollution is " sewage farm ".
River wastewater treatment process of the present invention: river wastewater flows through " the bio-based weir wetland oxidation pond " that multistage Ji Yan is formed, reach sewage self-cleanse object, every grade of Ji Yan by the precipitation ditch before and after view aeration, sprinkling irrigation aeration, wetland, Ji Yan, base weir and levee slope biological plants by or diafiltration material form, to form the diafiltration of alternate cycles water, aeration and stable flocculation, precipitation.
The construction method of the present invention's " bio-based weir wetland oxidation pond ": the construction method adopting ecological management engineering to be combined with river desilting training works, namely when river dredging training works, first can renovate riverbed, side embankment, and opposite side keeps runoff draining.First levee slope diafiltration ladder is from bottom to top built by laying step by step along riverbed and levee slope root brick, stone, hard fiber material after desilting during regulation, then Ji Yan is built by laying bricks or stones in renovated river (canal) interval, horizontal plane between two-stage base weir is positioned at the 1/2-2/3 place of higher level's base height of weir degree and the top of subordinate Ji Yan, to form the wetland oxidation pond water surface, build step by step on so by downstream, and then build by laying opposite side riverbed by this method.The concrete construction method on bio-based weir: namely two 0.5 meter dark, 1 meter wide traverse furrow precipitates ditch to select suitable distance to dig in river course: construct two walls before and after base weir with the mechanically resistant material such as masonry, cement, one-sided basal wall thickness 0.24-0.36 rice, the spacing 0.52-0.78 rice of front and rear wall, and it is integral with steel reinforcing, then the earth before and after weir is inserted the space of front and rear wall, finally become the antiseepage precipitation ditch of dark 0.5 meter, wide 1 meter with masonry, cement masonry.In the end have two-three grades of rubber dams after one-level bio-based weir, also can not build little stream canal.Described base weir can maintain the current plane of certain altitude, keep certain water level, can increase at water level again, flow increase time, the effect of letting out under there is draining, it constructs height 0.5-1.0 rice, width 0.5-1.0 rice (river that flow velocity is little, surging force is little, canal), flow velocity is rapid, and it is 1-1.5 rice that width is constructed in the river that surging force is larger.
Wetland oxidation pond of the present invention is that the waters of the water surface degree of depth of less than two meters is referred to as, and it has multiple aquatic vascular plant and aquatic miniature organism, can purify water, have for wild fauna and flora provide the function of good habitat.The wetland oxidation pond treatment system formed can precipitate, adsorb, filters, fixes, ion-exchange, complex reaction, nitrated, denitrification, nutritive element absorb, biological metabolism conversion and bacterium, fungi the process such as dissimilation, especially aquatic macrophyte has flourishing root system, and secretion has mucus, become the attaching substratum of miniature organism, effective microbial flocculation, precipitation, absorption, diafiltration, Decomposition can be produced to polluted water, improve sewage purification rate.
Precipitation ditch before and after base weir of the present invention can the settling of depositing dosed quantities, and need periodic cleaning, the settling in every grade of precipitation ditch is drawn on levee slope at the same level and carries out ecological material recycle.This settling is the digested sludge be biodegradable under anaerobism or aerobic condition, is conducive to absorbing of plant, has the utility value of exploitation ecological economy resource, avoids secondary pollution, reduce training of channel quantities.
The wetland oxidation pond that more than Ji Yan of the present invention is formed is the improvement sewage method combined with wet land treating system, incomplete same with the oxidation pond described in the sewage water treatment method of classics.Its ultimate principle utilizes the self-purification capacity of nature water body and the ecological purification effect of aquatic animals and plants and levee slope soil and vegetation treatment system, promotes organic matter decomposition, the metabolism toxicity of process wastewater degradation water quality.
Described view aeration, for broad river surface, rainer range does not reach the central section, river of bank levee slope, by various combination form, be equipped with color lamp, to form fountain sight formula aeration mode, make it have ornamental value, there is again abundant ingress of air oxygenation, accelerate the decomposition rate of water pollutant.
Described sprinkling irrigation aeration, rationally by dress sprinkling irrigation equipment along waterside, riverbank place, its range can reach top, embankment slope, the sewage sprinkling irrigation aeration water yield of every grade of Ji Yan should equal the flooding quantity of Ji Yan at the same level, its effect is: can to embankment plant irrigation, allows soil organisms decomposing pollutant, can strengthen again the contact area with air, abundant aeration aerating, the aerobic accelerating pollutent decomposes; For tall and big riverbank levee slope, when rainer maximum range is also difficult to arrive top, levee slope skirt sprinkling irrigation aerating apparatus can also can be set, i.e. pipe laying under the soil of employing slope, skirt upwards, carries out aeration at embankment top arrangement shower nozzle, is also conducive in the winter time irrigating levee slope temperature canopy plant.
Bio-based weir of the present invention is in the purge cases of Different water period:
When river falls, between each base weir, become inner lead, extend the high-concentration sewage residence time, by sprinkling irrigation levee slope soil vegetative cover, the number of times increasing diafiltration flowing and exchange.In addition, because the water surface is stablized, change of water quality speed is unhappy, therefore the biological species generation be adapted under this water area ecological environment condition correspondingly makes a variation, survives, breeds, set up new ecological symbiotic relationship, mutually collaborative decomposing pollutant and meta-bolites, pollution degradation material, promotes absorbing of sewage purification and plant.
During eagre, current exceed dam crest, by the portion's biofiltration of base weir crest, absorption, can have drop simultaneously, produce nature drop and hydraulic jump, increase aeration aerating process, promote the purification of pollution substance;
The flood discharge phase, the upstream dilution water yield is large, and floating plant, pleuston, zooplankton are flushed away, and polluted water also can be diluted, and floatingleaved plant still can retain with emergent, heavy hydrodynamic(al) plant.
Major advantage of the present invention and effect:
Method of the present invention lacks for drought, water resources, riverbed width is greater than one meter, the river degree of depth and He Po land level ratio is greater than 1/2, slope, river and horizontal plane angle be greater than 120 degree, the gradient be nature skewed and/or stepped, grow have vegetation or seminatural vegetation and the river having industrial and agricultural wastewater and sanitary sewage to discharge and basin all applicable; The present invention, owing to making full use of space, river course, saves the area, and construction investment is little, manageable, and working cost is little, and decontamination effect improving dissolved oxygen increases, BOD5, COD mn, COD crall reduce, and have and weaken cytogenetic toxicity effect, reduce fish kills rate, obviously reduce the concentration of copper, lead, cadmium in water; The present invention is rebuild by embankment, and riverbed is smooth, implements the engineering of " bio-based weir wetland oxidation pond ", can the orderly artificial economic living green belt of Formation rule, improves the ecological environment; The mud deposited in scavenging process may be used for the economic plants planting well developed root system, can also develop waterplant, herbivore and carnivore.In sum, the present invention makes full use of vegetation and the seminatural vegetation in space, river course, it is strengthening physical environment " self-purification system ", become that to receive dirt, river course for sewage discharge be a natural sewage farm, there is the base of bio-resource exploitation and utilization simultaneously, be that one is suited measures to local conditions, cost is little and meet the river wastewater intensified ecological self-cleaning method of " comprehensive utilization, turn harm into good " principle.
The following describes bio-based weir wetland oxidation pond structure.
Base weir of the present invention wetland oxidation pond is made up of some grades of base weirs, and every grade of Ji Yan has successively: the precipitation ditch before and after view aeration, sprinkling irrigation aeration section, wetland oxidation pond, Ji Yan and base weir, riverbed, the overflow dam that the gangway in riverbed is built.
The mechanically resistant materials such as base weir front and rear wall masonry, cement are built by laying bricks or stones, and reinforced with many reinforcing bars, then the earth before and after base weir dug out the space inserted between front and rear wall and tamp, smooth wetland oxidation pond 4 is formed before base weir, precipitation ditch before and after base weir is the antiseep ditch becoming one fixed width and the degree of depth with masonry, cement masonry.
Feature of the present invention is set forth further below by example.
Embodiment
This example carries out in simulator.The sewage of experiment gets irrigation canals and ditches water sample.
Experimentation and condition: the drop of the height simulation river gradient of experiment cylinder, flow automatically in lower experiment cylinder, interior etc. the settling cylinder body entering belt stirrer after waterplant absorption diafiltration is overflowed, by the airtight suction water storage bottle of negative pressure, then synchronized being naturally dropped into is tested in cylinder; Rayed is carried out with fluorescent lamp by natural Light To Dark Ratio condition during experiment; Inside have the diafiltration of PFU (polyurethane foamed blocks) A two-stage, its effect is the living space allowing miniature organism wherein have a decomposing pollutant matter; Plant in deposition cylinder and be implanted with waterplant of the same race, the small-sized fish (Poecilia) of experiment cylinder cultivation equivalent amount, feeds with the water flea of river, the Huanshui River polluted waters, observes pollutent and will produce what effect after aquatic food chain effect.

Claims (4)

1. an intensified ecological sewage decontaminating method for rivers, channels and ditches, it is characterized in that " bio-based weir wetland oxidation pond " that river ditch polluted water is formed through multistage Ji Yan, every grade of Ji Yan by levee slope biological plants by or diafiltration material, view aeration, sprinkling irrigation aeration, wetland, Ji Yan and base weir before and after precipitation ditch form, horizontal plane between two-stage base weir is positioned at the 1/2-2/3 place of upper level base height of weir degree and the top of subordinate Ji Yan, and the degree of depth 0.5 meter, width are the precipitation ditch of 1 meter.
2. the distance that in accordance with the method for claim 1, it is characterized in that between two described base weirs should be able to form the gradient and broad stable smooth wetland oxidation pond cross flow with 0.5-1 ‰ and not affect flood discharge function.
3. in accordance with the method for claim 1, it is characterized in that in the end its water surface is no more than 2/3 of previous stage Ji Yan and highly has two-three grades of rubber dams after one-level Ji Yan.
4. in accordance with the method for claim 1, it is characterized in that the sewage of every grade of base weir wetland oxidation pond, mud sprinkling irrigation water and sediment can be drawn on levee slope at the same level, utilize for plant absorption, purification diafiltration.
CN201410249948.0A 2014-06-09 2014-06-09 River ditch sewage ecological strengthening self cleaning method Pending CN105130090A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105347632A (en) * 2015-12-21 2016-02-24 南京领先环保技术股份有限公司 In-situ bio-ecological water purification method and equipment
CN105544461A (en) * 2015-12-30 2016-05-04 北京东方园林生态股份有限公司 Water purification type ecological bank protection overflow system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1241538A (en) * 1998-07-10 2000-01-19 李敬生 Intensified ecological sewage decontaminating method for rivers, channels and ditches
CN102351376A (en) * 2011-07-08 2012-02-15 中国科学院水生生物研究所 Riverbank multiple pond wetland waste sewage treatment method and device
JP2013121588A (en) * 2011-11-11 2013-06-20 Tokushimaken Kankyo Seibi Kosha Water purification device, and water purification method using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1241538A (en) * 1998-07-10 2000-01-19 李敬生 Intensified ecological sewage decontaminating method for rivers, channels and ditches
CN102351376A (en) * 2011-07-08 2012-02-15 中国科学院水生生物研究所 Riverbank multiple pond wetland waste sewage treatment method and device
JP2013121588A (en) * 2011-11-11 2013-06-20 Tokushimaken Kankyo Seibi Kosha Water purification device, and water purification method using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105347632A (en) * 2015-12-21 2016-02-24 南京领先环保技术股份有限公司 In-situ bio-ecological water purification method and equipment
CN105544461A (en) * 2015-12-30 2016-05-04 北京东方园林生态股份有限公司 Water purification type ecological bank protection overflow system

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Application publication date: 20151209