CN107117713A - A kind of method of the riverside zone artificial swamp of purified treatment cadmium pollution irrigation water - Google Patents
A kind of method of the riverside zone artificial swamp of purified treatment cadmium pollution irrigation water Download PDFInfo
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- CN107117713A CN107117713A CN201710477531.3A CN201710477531A CN107117713A CN 107117713 A CN107117713 A CN 107117713A CN 201710477531 A CN201710477531 A CN 201710477531A CN 107117713 A CN107117713 A CN 107117713A
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- artificial swamp
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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
- 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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- Biodiversity & Conservation Biology (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
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Abstract
The invention discloses a kind of method of the riverside zone artificial swamp of purified treatment cadmium pollution irrigation water, step is：A, point selection；Select current than it is shallower, apart from the closer section of irrigation water intake；B, riverbed are reinforced；The left and right sides in riverbed, is reinforced using stone masonry, retains the flood passage function in original riverbed；C, bank slope regulation；Strengthening of foundation is carried out to left and right embankment using stone masonry barricade；D, channel cleanout；Substrate transformation is carried out to silt beach；E, wetland bed filling；Quick lime stone, clinoptilolite, clinker, river sand and soil are inserted in layering successively from bottom to top；F, newly-built ground sills；Constructed in artificial swamp end and prefabricated sand discharge hole is installed in the middle of ground sills, drop-over downstream river course, ground sills；G, plants configuration-；H, artificial swamp maintenance management.It is not take up farmland, removal efficiency is high, operating cost is low, easy operation and management, meets the demand for carrying out purified treatment to iirigation water source in arable land heavy metal pollution is repaired.
Description
Technical field
The invention belongs to heavy metal pollution reparation and purifying water process field, a kind of purified treatment cadmium is more specifically designed into dirty
The method of the riverside zone artificial swamp of irrigation water is contaminated, it is repaired suitable for south China heavy metal pollution arable land, in irrigation water
It is to reduce the weights such as cadmium in irrigation water by the absorption of the matrix of riverside zone artificial swamp and aquatic plant purification into before rice field
The expense of metallic pollution is low, easy operation and management effective ways.
Background technology
On April 17th, 2014, Chinese Ministry of Environmental Protection and Ministry of Land and Resources's joint issue《National Soil Pollution Investigation publication》
It has been shown that, China arable soil point position exceeding standard rate 19.4%, wherein slightly, slightly, moderate and serious pollution point position ratio be respectively
13.7%th, 2.8%, 1.8% and 1.1%.Wherein, it is especially prominent for the heavy metal pollution problem of representative with cadmium, lead, arsenic, chromium etc..
Sewage irrigation is considered as one of exceeded major reason of the crop heavy metals such as heavy metal pollution of soil and rice.According to agricultural
Investigation of the portion to national irrigating region, in about 1,400,000 hm2Irrigation District of Sewage in, the land area by heavy metal pollution accounts for sewage
The 64.8% of irrigated area area.But due to the surface water pollution scope relatively reason such as wide or water resources shortage, entered using polluted source
Row is irrigated does something against one's will again.Therefore, purified treatment is carried out to iirigation water source using proper technology measure, effectively reduction is irrigated
The heavy metal concentration of water is repairing heavy metal pollution arable land and realizes the necessary links of grain security production.
Artificial swamp is mainly made up of matrix system and aquatic plant system, by the physics of plant, matrix and microorganism,
Chemical and biochemical reaction is triple to act synergistically to handle sewage, so as to reach the purpose of purification sewage.With traditional chemical method
Or physico-chemical process is compared, artificial swamp has that simple to operate, operating cost is low, advantages of environment protection, not only to a huge sum of money
Category ion has good removal effect, and avoids secondary pollution problem.But current polluted using Constructed Wetland For Purifying is irrigated
Water also needs to further grind also in the starting stage in terms of wetland plant selection and configuration, adsorbing base species and proportioning
Study carefully.
Through Chinese patent net and correlative theses retrieved web, find to have some at present on Constructed Wetland For Purifying processing weight
The report of metallic pollution irrigation water.Such as take charge of ten thousand children discovery artificial swamp and can efficiently reduce and draw in yellow irrigation water and agricultural land soil
Heavy metal Cu, Zn, Pb and Cd mass concentration《Lanzhou University's journal (natural science edition) 2012.48 (5)：85~93》.Give to
Mentioned in " a kind of small towns sanitary sewage artificial wet land treating system " [CN201610852550.5] using from top to bottom in east etc.
Compound plant soil layer, removing heavy metals material layer, medical stone layer, gravel layer and cobblestone layer for setting gradually etc., heavy metal is gone
Except rate can reach more than 95%, but this method cost is higher and easily causes artificial swamp blocking；Zhong Yongying is " one
Mentioned in the artificial wet land treating method of kind processing plant heavy metal wastewater thereby " [200910107815.9] and utilize volcanic rock, river sand
Deng compounded mix and water plant processing effluent containing heavy metal ions, but this method is smaller using scope, and water yield is small, it is difficult to full
The demand of sufficient farmland irrigation water；Korea Spro, which builds, just to be waited at " a kind of artificial wet land system for removing heavy metal in livestock breeding wastewater "
[201410267948.3] mentioned in and purified treatment, but this method base are carried out to breeding wastewater using the filled column with packing layer
Belong to physico-chemical process on this, filled column need to be changed in time, and easily cause secondary pollution.Therefore, a kind of purification is set up
Efficiency high, the operating cost of the heavy metal pollution irrigation water such as cadmium are low, method that is being simple to operate and friendly to environment just seems particularly urgent
Cut.
The content of the invention
For current cadmium pollution irrigation water process floor space is big, cost is high, stability is poor, easily cause the skills such as secondary pollution
Art difficult point, the purpose of the present invention is to be the provision of a kind of side of the riverside zone artificial swamp of purified treatment cadmium pollution irrigation water
Method, is not take up farmland, removal efficiency is high, operating cost is low, easy operation and management, meets in arable land heavy metal pollution is repaired
The demand of purified treatment is carried out to iirigation water source.
In order to realize above-mentioned purpose, the present invention uses following technical measures：
A kind of method of the riverside zone artificial swamp of purified treatment cadmium pollution irrigation water, its step is：
A, point selection；Select current than shallower, alluvial flat area more than 400 square metres (1500 square metres with
Under), and apart from the closer section of irrigation water intake.
B, riverbed are reinforced；The left and right sides in riverbed, is reinforced using stone masonry.Both the flood passage work(in original riverbed had been remained
Can, it can prevent flood from being washed away to artificial swamp matrix and plant again.
C, bank slope regulation；Strengthening of foundation is carried out to left and right embankment using stone masonry barricade, using chain ecological brick or turf
Bank protection is done to left and right two sides.
D, channel cleanout；Substrate transformation is carried out to silt beach, 0-60cm top layers mud is removed.
E, wetland bed filling；From bottom to top successively layering insert particle diameter 4-30mm quick lime stone, clinoptilolite, clinker and
River sand, the thickness 10cm of every kind of material layer or so, the gross thickness of packing layer is 40cm or so, then upper strata covering 20cm or so thickness
Free of contamination Paddy soil or loam or soft clay soil.
F, newly-built ground sills；Ground sills, drop-over downstream river course are constructed in artificial swamp end.Prefabricated sand discharge is installed in the middle of ground sills
Hole, and lifting flat plate steel lock is installed to control wetland water level in the middle of ground sills.
G, plants configuration；Plant Dui Cadmium to absorb and the stronger wetland plant of accumulation ability, species is canna glauca, reed
Reed, cattail, Scirpus tabernaemontani and water pepper.Transplanted by water and bank strip-type, be sequentially water pepper-Scirpus tabernaemontani-canna glauca-cattail-reed
Reed.
H, artificial swamp maintenance management：Wetland water level control is received in 10-30cm in plant growth latter stage to plant
Cut.Lift gate sand surfing once, mitigates river channel sedimentation weekly.
By abovementioned technology, solve current irrigated in cadmium pollution and farmland, place are taken present in purifying water process
Reason cost is high, water yield is difficult to meet wilderness demand of the agricultural irrigation to water, and easily causes the technological difficulties such as secondary pollution,
Its advantage is compared with prior art：
(1) scope of application is wider：The south China area irrigation canals and ditches network of waterways spreads all over the place, and alluvial flat is distributed wider, area
Greatly.Therefore the applicable scope of the present invention is wider.
(2) build that expense is low, operation energy consumption is small, easy operation and management.It is of the invention main by transforming not by abundant profit
Alluvial flat, is not take up farmland, therefore cost is than relatively low.After riverside zone artificial swamp is built up, it is only necessary to regular sand surfing, to aquatic
Plant is harvested and managed, easy operation and maintenance management.
(3) removal efficiency to cadmium in irrigation water is higher.The method set up using the present invention is 1.23 μ to cadmium concentration
g L-1Irrigation water carry out purified treatment after, the cadmium concentration of artificial wetland effluent drops to 0.66 μ g L-1, the clearance of cadmium
Reach 46.23%.
(4) it can effectively improve Ecological Environment.Riverside zone artificial swamp has not only purified irrigation water water quality, is formed
Aquatic vegetation also has preferable appreciation effect, good habitat can be provided for fish, batrachia etc., to rural area
Ecological environment tool has some improvement.
Brief description of the drawings
Fig. 1 is a kind of diagrammatic cross-section of the riverside zone artificial swamp of purified treatment cadmium pollution irrigation water
Fig. 2 is a kind of floor plan of the riverside zone artificial swamp of purified treatment cadmium pollution irrigation water
Fig. 3 are ground sills profile
Wherein：1 is embankment, and 2 be bank protection, and 3 be the first barricade, and 4 be soil horizon, and 5 be encapsulant layer, and 6 be wetland plant
Combine (wetland plant such as water pepper, Scirpus tabernaemontani, cattail and reed), 7 be the second barricade, and 8 be riverbed, and 9 be ground sills, and 10 be lifting flat board
Steel lock, 11 be sand discharge hole.
Embodiment
Applicant will combine the example of ChangSha, Hunan Province county Beishan Mountain town Rong Heqiao communities riverside zone artificial swamp to this below
Inventive method is described in further detail, it is therefore intended that those skilled in the art is had more detailed understanding to the inventive method
And understanding, following examples should not be understood to that the limitation of scope is claimed to the present invention in any degree.
Embodiment 1：
A kind of method of the riverside zone Constructed Wetland For Purifying processing of cadmium pollution irrigation water, its step is：
(1) point selection；Select one section of He Qiao downstreams of honor current than shallower section, length about 85m, silt beach face product exists
600 square metres or so.Wetland end is the intake of iirigation water source.
(2) riverbed 8 is reinforced；By the water surface width in dry season, along the left and right sides contour line of riverbed 8, fiber crops are used by longitudinal slope 1/400
The rectangular slab of stone and M7.5 stone masonries construct the second barricade 7, prevent flood from being washed away to artificial swamp.
(3) bank slope is renovated；Left bank cubic metre of earth is built the flood-protection of embankment 1 and overflowed, and long 85m, section 1m × 1.5m, left bank press 1:0.7
Whole slope；Right bank builds the first barricade 3 of block, long 85m, section 2.5m × 0.305m, using chain ecological brick bank protection 2 using ramie stripes stone.
(4) channel cleanout；Substrate transformation is carried out to silt beach, 0-60cm top layers mud is removed.
(5) wetland bed filling；It is wetland bed that quick lime stone, artificial zeolite, clinker and river sand are inserted in layering successively from bottom to top,
The gross thickness of encapsulant layer 5 is 40cm, and upper strata 20cm soil horizons 4 insert cleaning paddy soil.
(6) newly-built ground sills 9；Ground sills 9 takes the cast-in-place dam body of reinforced concrete.The long 6m of dam length 9m, wherein right bank, height of dam be 1.4m,
The top width 2m of ground sills 9, downstream spillwag chute slope compare 1:0.7, the centre of ground sills 9 is installed to install in the middle of the prefabricated sand discharge holes 11 of D600, ground sills 9 and carried
Peaceful slab lock 10, regulates and controls water level, the long 3m in left bank, height of dam 0.7m, the wide 2m of dam crest, drop-over downstream river course.
(7) plants configuration；Wetland Area about 600m2.By water and bank ribbon plant Combination oF Wetland Plants 6 (water pepper, water
The wetland plants such as green onion, cattail and reed).
(8) maintenance management；Water level control is in 10-30cm.Plant is gathered in plant growth latter stage.Lifted weekly
Gate sand surfing once, mitigates river channel sedimentation.
The streamside artificial swamp set up using this method has been run 2 years, in January, 2016 to December to artificial swamp
Water inlet and effluent quality are sampled and analyzed, and discovery is obvious to the removal effect of Cadmium In The Water Body, and average removal rate is
26.83%, in water body cadmium concentration higher August part, clearance reaches 46.23%, can effectively reduced defeated by irrigation water
Enter the cadmium total amount to rice field.
1. 2016 years 1-12 month Changsha Counties Beishan Mountain town Rong Heqiao streamsides artificial swamps of table are imitated to the purified treatment of cadmium in irrigation
Really
Claims (1)
1. a kind of method of the riverside zone artificial swamp of purified treatment cadmium pollution irrigation water, its step is：
（1）Ground point selection；Select current than shallower, alluvial flat area more than 400 square metres, apart from irrigation water intake ratio
Nearer section；
（2）Riverbed is reinforced；The left and right sides in riverbed, is reinforced using stone masonry, is retained the flood passage function in original riverbed, is prevented flood
Water washes away to artificial swamp matrix and plant；
（3）Bank slope is renovated；Strengthening of foundation is carried out to left and right embankment using stone masonry barricade, using chain ecological brick or turf to a left side
Do bank protection in right two sides；
（4）Channel cleanout；Substrate transformation is carried out to silt beach, 0-60 cm top layers mud is removed；
（5）Wetland bed filling；Particle diameter 4-30 mm quick lime stone, clinoptilolite, clinker and river is inserted in layering successively from bottom to top
Sand, the thickness of every kind of material layer is 10 cm, and the gross thickness of packing layer is 40 cm, and then upper strata covers the pollution-free of 20 cm thickness
Paddy soil or loam or soft clay soil；
（6）Newly-built ground sills；Constructed in artificial swamp end and prefabricated sand discharge hole is installed in the middle of ground sills, drop-over downstream river course, ground sills, and
Lifting flat plate steel lock is installed in the middle of ground sills to control wetland water level；
（7）Plants configuration；The plantation wetland plant stronger to Cd uptake and accumulation ability, species be canna glauca, reed,
Cattail, Scirpus tabernaemontani and water pepper, are transplanted by water and bank strip-type, are sequentially water pepper-Scirpus tabernaemontani-canna glauca-cattail-reed；
（8）Artificial swamp maintenance management：Wetland water level control is gathered in 10-30cm in plant growth latter stage to plant,
Lift gate sand surfing once, mitigates river channel sedimentation weekly.
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| CN201710477531.3A CN107117713B (en) | 2017-06-20 | 2017-06-20 | Method for purifying riverside zone constructed wetland of cadmium-polluted irrigation water |
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| CN201710477531.3A CN107117713B (en) | 2017-06-20 | 2017-06-20 | Method for purifying riverside zone constructed wetland of cadmium-polluted irrigation water |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109511496A (en) * | 2018-11-23 | 2019-03-26 | 沈阳农业大学 | A method of the reduction Nitrogen of Rice leaching loss based on clinoptilolite |
| CN110467316A (en) * | 2019-08-21 | 2019-11-19 | 南华大学 | A kind of rainwater is detained and processing unit |
| CN115228921A (en) * | 2022-06-14 | 2022-10-25 | 安徽大学 | Method for repairing light and medium cadmium-polluted rice field soil by using polygonum hydropiper |
| CN118343925A (en) * | 2024-05-07 | 2024-07-16 | 生态环境部南京环境科学研究所 | Soil heavy metal green efficient pollution prevention and control method based on constructed wetland |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109511496A (en) * | 2018-11-23 | 2019-03-26 | 沈阳农业大学 | A method of the reduction Nitrogen of Rice leaching loss based on clinoptilolite |
| CN110467316A (en) * | 2019-08-21 | 2019-11-19 | 南华大学 | A kind of rainwater is detained and processing unit |
| CN115228921A (en) * | 2022-06-14 | 2022-10-25 | 安徽大学 | Method for repairing light and medium cadmium-polluted rice field soil by using polygonum hydropiper |
| CN115228921B (en) * | 2022-06-14 | 2023-05-30 | 安徽大学 | Method for repairing light and medium cadmium-polluted paddy field soil by utilizing polygonum hydropiper |
| CN118343925A (en) * | 2024-05-07 | 2024-07-16 | 生态环境部南京环境科学研究所 | Soil heavy metal green efficient pollution prevention and control method based on constructed wetland |
| CN118343925B (en) * | 2024-05-07 | 2024-10-11 | 生态环境部南京环境科学研究所 | Soil heavy metal green efficient pollution prevention and control method based on constructed wetland |
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