CN103833184B - Paddy field recession water purification device placed in ridge of field - Google Patents

Paddy field recession water purification device placed in ridge of field Download PDF

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Publication number
CN103833184B
CN103833184B CN201410068237.3A CN201410068237A CN103833184B CN 103833184 B CN103833184 B CN 103833184B CN 201410068237 A CN201410068237 A CN 201410068237A CN 103833184 B CN103833184 B CN 103833184B
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water
ridge
paddy
fine
woven wire
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CN103833184A (en
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王沛芳
王超
钱进
侯俊
包子云
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Hohai University HHU
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Hohai University HHU
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Abstract

The invention provides a paddy field recession water purification device placed in a ridge of a field. The paddy field recession water purification device is characterized in that a framework of a single water purifying device is constructed by using reinforcing steel bars with the diameter of phi10, plastic plates are arranged at two sides of the framework, steel wire meshes are arranged at the other four faces of the framework, a plastic gate is arranged at the front end of the framework, the interior of the device is partitioned into a part A and a part B by steel wire meshes with fine density, the volume ratio of the part A to the part B is 2: 1, the steel wire mesh of the part A is a high-density steel wire mesh and is filled with bio-filler balls, the steel wire mesh of the part B is a fine-density steel wire mesh and is filled with activated carbon, the front and rear faces of the single water purifying device are designed to be openable, and the single water purifying device or two single water purifying devices are placed in the ridge of a drainage end of the paddy field and are fixed by wood piles. The paddy field recession water purification device has the advantages that the traditional drainage manners that the traditional paddy fields directly drain paddy field recession water through opening gates and the water is not purified are improved, and harmful substances, such as nitrogen, phosphorus, organic substances and hardly-biodegradable pesticide residues, can be effectively trapped from recession water of cultivated field.

Description

Be placed in the rice terrace water-break quality purifying device for water of ridge
Technical field
What the present invention relates to is a kind of rice terrace water-break quality purifying device for water being placed in ridge, with nitrogen, phosphorus, organism in environmental drainage pattern reduction farmland water-break and the content being difficult to the harmful substances such as biodegradable pesticide residue, be applicable to the crop ped location that agricultural pollution is serious, especially the pollution of Plain irrigation type farming region is disposed, as agricultural tillage district, Taihu Lake.Belong to agricultural non-point pollution control techniques field.
Background technology
Along with socioeconomic development, the surface water pollution problem that China's widespread pollution from the overuse of fertilizers and pesticides in rural area causes is more and more significant.First time national Pollutant source investigation publication display, the total nitrogen of widespread pollution from the overuse of fertilizers and pesticides in rural area discharge is 270.46 ten thousand t, and total phosphorus is 28.47 ten thousand t, accounts for 57.19% and 67.27% of the whole nation discharge same period respectively.The nitrogen phosphorus loss wherein caused by paddy field drainage has become the main source of southern area widespread pollution from the overuse of fertilizers and pesticides in rural area.Paddy rice is agricultural irrigation water rich and influential family, and its irrigation water use accounts for more than 60% of total irrigation water use.Tradition paddy field drainage, mainly in order to meet the needs of paddy growth to soil humidity and ventilation, seldom considers that draining is on the impact of environment.This mode of not carrying out reasonable sanding and directly draining, causes the rice field Nutrient water-breaks such as a large amount of nitrogen phosphorus to be run off, causes receiving water body eutrophication, also cause the objectionable impuritiess such as pesticide residue to enter water body, directly work the mischief to hydrobiont.
At present escape canal ecology transformation aspect is mainly concentrated on to the method for farmland water-break purification of water quality, CN101696059B discloses a kind of ecological canal of impedance widespread pollution from the overuse of fertilizers and pesticides in rural area, be characterized in establishing physical grille at irrigation canals and ditches footpath influx, and between grid, place biological ball, settling tank is established in grid bottom, irrigation canals and ditches kind pleuston, emergent and submerged plant, inoculate epiphytic algae and planktonic algae in sewage, be applicable to the removal to water pollution material in the basin in mountain region, agricultural tillage district, hills.CN102966083A discloses a kind of ecological canal construction method for controlling nitrogen phosphorus in farmland drainage, be characterized at furrow bank and bottom of trench planting plants, then porose pvc pipe is laid at furrow bank and bottom of trench intersection, and the matrix interception dam of replaceable matrix is laid at bottom of trench, have and necessarily retain purification nitrogen phosphorus ability.These method infrastructure projects are more, and construction is complicated.In addition, CN102249418A discloses a kind of shock resistance type ecological canal for tackling phosphorus loss, is characterized in having added ecological intercepting device, but the easily movement when current are excessive of this ecological intercepting device, and long-time after retain purification nitrogen phosphorus effect decline, working life is short.
And relate to that to utilize ridge to control the invention of farmland water-break water quality still rare, CN103270832 discloses a kind of method utilizing biological ridge to control farmland nitrogen phosphorus pollution of area source, be characterized in selecting the farmland possessing the main ridge, prop up the ridge and the hair ridge, according to time change plantation shrub on these ridges, draft economic plants etc. increase Agricultural biodiversity, reduce nitrogen to the pollution of environment.This method steps is loaded down with trivial details, and operational management is complicated, and mainly for nitrogen phosphorus ligands, is difficult to effective removal to objectionable impuritiess such as pesticide residues.
Summary of the invention
What the present invention proposed is a kind of rice terrace water-break quality purifying device for water being placed in ridge, its objective is for irrigation type rice terrace water-break Environmental capacity problem, by at rice terrace discharge ends ridge internal fixtion quality purifying device for water, effectively nitrogen in the water-break of farmland is controlled in drainage procedure, phosphorus concentration is to reduce receiving water body Eutrophic Extent, reduce the harmful substance contents such as farmland water-break Pesticide Residues thing to reduce the hydrobiological harm of receiving water body, improve the in line rice field water-break that gate is directly opened in traditional rice field, water quality can not get the conventional discharge mode of any purification.
Technical solution of the present invention: the rice terrace water-break quality purifying device for water being placed in ridge, it is characterized in that building monomer quality purifying device for water framework with the reinforcing bar of φ 10, both sides are set to plastic plate, other 4 faces are set to woven wire, and front end arranges plastics gate, and device inside is divided into A, part B with the woven wire of fine and closely woven degree, the volume ratio of A, B two parts is 2:1, part A woven wire is large density woven wire, plays coarse rack effect, blocks to prevent larger suspended substance from entering in case; And filled biomass filling ball, part B woven wire is fine and closely woven degree woven wire, and fills activated carbon, is used for absorption to be difficult to the objectionable impuritiess such as biodegradable pesticide residue, and plays fine fack effect, filters water body further; Monomer quality purifying device for water front-back is designed to openable, and to facilitate filler in periodic replacement case, monomer quality purifying device for water or two monomer quality purifying device for water are placed in rice terrace discharge ends ridge, and fix with timber, prevent current scour and move; When rice terrace needs draining, open plastics gate, rice field water-break flows through activated carbon again and is purified after biologic packing material ball, when rice terrace does not need draining, and plastics closing gate.
Refining plant run the aging or charcoal absorption of microbial film on for some time biopurification ball full after, easily refining plant front-back can be opened and carry out respectively process to biopurification ball, gac and upgrade.
Advantage of the present invention: 1) effects of purification quality is good, the size density woven wire of quality purifying device for water has stopped large volume pollution substance; Biologic packing material ball decreases the content of nitrogen and phosphorous in water-break; Gac reduces the harmful substance contents such as heavy metal, pesticide residue in water.2) do not affect draining unobstructed, quality purifying device for water is combined in rice terrace field water-break discharge process, and form environmental drainage pattern, infrastructure project is few, does not change agriculture production general layout.3) be beneficial to the repair and reconstruction of ridge water port, easily, construction cost is cheap, and Operation Administration and Maintenance is simple, possesses good application value in construction.
Accompanying drawing explanation
Accompanying drawing 1 is the rice terrace water-break quality purifying device for water framework sectional view being placed in ridge.
Accompanying drawing 2 is monomer quality purifying device for water sectional views.
Accompanying drawing 3 is monomer quality purifying device for water overall schematic.
Accompanying drawing 4 is biologic packing material balls.
Accompanying drawing 5 is that the rice terrace water-break quality purifying device for water being placed in ridge lays floor map.
In figure, 1 is φ 10 reinforcing bar, 2 is plastic plates, and 3 is plastics gates, and 4 is fine and closely woven degree woven wires, 5 is large density woven wires, 6 is atom filling balls, and 7 is activated carbon, and 8 is timbers, 9 is soft cellulose fillers, 10 is the protruding plastics ball frameworks of polyethylene, and 11 is nylon marlines, and 12 is monomer quality purifying device for water.
Embodiment
Embodiment 1
As shown in Figure 1, build monomer quality purifying device for water framework with φ 10 reinforcing bar 1, side is set to plastic plate 2, in case water-stop body side leakage, device inside is divided into A, B two portions with the woven wire of fine and closely woven degree, the volume ratio of A, B two parts is 2:1, and wherein part A woven wire is large density woven wire 5, plays coarse rack effect, block to prevent larger suspended substance from entering in case, part B woven wire is fine and closely woven degree woven wire 4, plays fine fack effect, to filter water body further.For easy for installation, adapt to the rice terrace ridge of different size, plant bulk is designed to 0.6m × 0.4m × 0.4m.
As shown in accompanying drawing 2 and accompanying drawing 3, at part B filled biomass filling ball 6, be used for purifying the nitrogen phosphorus in the water-break of farmland and easy biodegradable organism, fill activated carbon 7 in part A and be used for absorption and be difficult to the objectionable impuritiess such as biodegradable pesticide residue; Monomer quality purifying device for water front-back is designed to openable, to facilitate filler in periodic replacement case, monomer quality purifying device for water front end arranges plastics gate 3, and monomer quality purifying device for water is placed in rice terrace discharge ends ridge, and fix with timber 8, prevent current scour and move.
As shown in Figure 4, biologic packing material ball 6 is the spherical frames 9 being made up rat of polyethylene or acrylic plastering, and the soft cellulose filler 10 that filling is material with the fine synthetic fibre of hydroformylation, its surface-area is 1000 ~ 3000m 2/ m 3, density is 3 ~ 5kg/m 3, diameter is 0.06m, is strung hang in device by nylon fine rule 11.
As shown in Figure 5, the quality purifying device for water be placed in ridge plays the effect of an environmental water port.
Embodiment 2
The present embodiment 2 with implement 1 unlike: water quality purifying box is designed and sized to 0.9m × 0.4m × 0.4m, and be placed in side by side by two monomer quality purifying device for water in rice terrace discharge ends ridge, to increase drainage speed, other steps are identical with embodiment 1 with parameter.
After implementing the present invention, when rice terrace needs draining, open plastics gate, rice field water-break successively through excessive density woven wire, biologic packing material ball, fine and closely woven degree woven wire and activated carbon, in water-break, oarse-grained pollution substance is tackled by size density woven wire, nitrogen, phosphorus and easy biodegradable organism are purified by the filling ball in clear water tanks, are difficult to the objectionable impuritiess such as biodegradable pesticide residue by the activated carbon adsorption in clear water tanks, reach the object that purifies water.When rice terrace does not need draining, plastics closing gate.Refining plant run the aging or charcoal absorption of microbial film on for some time biopurification ball full after, easily refining plant front-back can be opened and carry out respectively process to biopurification ball, gac and upgrade.

Claims (1)

1. be placed in the rice terrace water-break quality purifying device for water of ridge, it is characterized in that building monomer quality purifying device for water framework with the reinforcing bar (1) of φ 10, both sides are set to plastic plate (2), other 4 faces are set to woven wire, front end arranges plastics gate (3), device inside is divided into A, part B with the woven wire (4) of fine and closely woven degree, the volume ratio of A, B two parts is 2:1, part A woven wire is large density woven wire (5), play coarse rack effect, block to prevent larger suspended substance from entering in case; And filled biomass filling ball (6), part B woven wire is fine and closely woven degree woven wire (4), and fills activated carbon (7), is used for absorption to be difficult to biodegradable pesticide residue objectionable impurities, and plays fine fack effect, filters water body further; Monomer quality purifying device for water front-back is designed to openable, to facilitate filler in periodic replacement case, monomer quality purifying device for water or two monomer quality purifying device for water are placed in rice terrace discharge ends ridge, and fix with timber (8), prevent current scour and move; When rice terrace needs draining, open plastics gate (3), rice field water-break flows through activated carbon again and is purified after biologic packing material ball, and when rice terrace does not need draining, plastics gate (3) is closed; Plant bulk is designed to 0.6m × 0.3m × 0.3m or 0.6m × 0.4m × 0.4m or 0.9m × 0.5m × 0.5m, for easy for installation, adapts to the rice terrace ridge of different size; Described biologic packing material ball (6) makes the spherical frame of rat and the soft cellulose filler that to fill with the fine synthetic fibre of hydroformylation be material by polyethylene or acrylic plastering, and its surface-area is 1000 ~ 3000m 2/ m 3, density is 3 ~ 5kg/m 3, diameter is 0.05 ~ 0.08m, is strung hang in device by nylon fine rule, is used for purifying the nitrogen phosphorus in the water-break of farmland and easy biodegradable organism.
CN201410068237.3A 2014-02-27 2014-02-27 Paddy field recession water purification device placed in ridge of field Active CN103833184B (en)

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CN105409868B (en) * 2015-12-23 2019-06-14 生态环境部南京环境科学研究所 A kind of filter device of prevention and control Procambius clarkii and application
CN105645572A (en) * 2016-01-11 2016-06-08 上海海洋大学 Low-cost method for treating ammonia nitrogen and nitrites in pond culture water body
CN107176698B (en) * 2017-07-13 2019-08-06 河海大学 A kind of active carbon and microorganism coupling device removing farmland water-break pesticide
CN107986539B (en) * 2018-01-22 2021-03-02 河海大学 Farmland first-stage water-return water quality percolation purification device
CN108782146B (en) * 2018-06-12 2020-06-02 许美凤 Paddy field irrigation system
CN109534516A (en) * 2018-12-11 2019-03-29 河海大学 A kind of undercurrent type farmland drainage ditch ecological purification device

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CN101817591B (en) * 2010-05-06 2011-08-31 河海大学 Automatic water oxygen-rich composite floating bed for strengthening biological carbon and phosphorous removal effect
CN101857307B (en) * 2010-06-17 2011-07-27 同济大学 Synchronous nitrogen and phosphorus removal process of integral bio-enhancement activated carbon dynamic membrane
CN103319005B (en) * 2013-07-08 2014-05-14 河海大学 Moveable assembled water quality purifier for field drainage ditch
CN103288312B (en) * 2013-07-08 2014-04-02 河海大学 Portable combined constructed wetland purifying box for farmland drainage ditch

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