CN104310572A - Multilayer overflowing type ecological cleaning pond applicable to farmland drainage ditch - Google Patents

Multilayer overflowing type ecological cleaning pond applicable to farmland drainage ditch Download PDF

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Publication number
CN104310572A
CN104310572A CN201410564156.2A CN201410564156A CN104310572A CN 104310572 A CN104310572 A CN 104310572A CN 201410564156 A CN201410564156 A CN 201410564156A CN 104310572 A CN104310572 A CN 104310572A
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CN
China
Prior art keywords
drainage ditch
purification
pond
water
applicable
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Pending
Application number
CN201410564156.2A
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Chinese (zh)
Inventor
饶磊
王沛芳
陈宇
汪双君
钱进
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Hohai University Changzhou Campus
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Hohai University Changzhou Campus
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Priority to CN201410564156.2A priority Critical patent/CN104310572A/en
Publication of CN104310572A publication Critical patent/CN104310572A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/001Runoff or storm water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00Apparatus and plants for the biological treatment of water, waste water or sewage

Abstract

The invention discloses a multiplayer overflowing type ecological cleaning pond applicable to a farmland drainage ditch. The multiplayer overflowing type ecological cleaning pond comprises a purifying pool body, two water inlet troughs, purification grooves, water separation walls, purification boxes, a gate, water pumps and water inlet pipes, wherein the purifying pool body is communicated with the farmland drainage ditch and is separated into the two water inlet troughs and a plurality of purification grooves with different depths through the water separation walls, and the purification boxes are arranged in the purification grooves. The purification grooves have a graded cascade structure, agricultural wastewater enters the water inlet trough after passing through the water pumps and the water inlet pipes and then flows through the purification grooves step by step under the action of a pressure head, and purified water finally flows back into the farmland drainage ditch. The efficient volume fraction of the cleaning pond can be improved, the hydraulic retention time of sewage in the pond is prolonged, the content of eutrophic substances in farmland drainage can be effectively lowered, and non-point source pollution in farmland is prevented from expanding to the outside. The multiplayer overflowing type ecological cleaning pond has the advantages of small floor space, high purification efficiency, simplicity in manufacture and convenience in maintenance, and an original water-logging drainage function of the farmland drainage ditch is not influenced.

Description

A kind of multilayer overflow type ecological purification pond being applicable to agriculture drainage ditch
Technical field
The present invention relates to a kind of multilayer overflow type ecological purification pond being applicable to agriculture drainage ditch, belong to control techniques field, source, face, farmland.
Background technology
Along with the develop rapidly of world industry and the further raising of intensive agriculture degree, control and reduction pollution of area source have become the subject matter that field of environmental improvement faces.China is as agriculture production big country, and agricultural area source dirt has accounted for more than 60% of pollution of area source total amount, causes the deterioration of basin water environment and water resources, and the Freshwater resources that serious threat is depended on for existence to people.At present, widespread pollution from the overuse of fertilizers and pesticides in rural area has become the first source of pollution of China's dystrophication, causes serious consequence to ecosystem function, human health and Economic development etc.Widespread pollution from the overuse of fertilizers and pesticides in rural area has the features such as randomness is large, space-time unique is wide, latency period is long, complex genesis, makes it become a major issue of Domestic Environment field common concern in recent years.
Widespread pollution from the overuse of fertilizers and pesticides in rural area (ANPSP) refers in Agricultural Activities, silt in farmland, nutritive salt, agricultural chemicals and other pollutent, in precipitation or irrigation process, by agricultural surface runoff, interflow, farmland drainage and underground leakage, enter water body and the pollution of area source formed.These pollutents are mainly derived from farmland fertilization, agricultural chemicals, livestock and poultry and aquaculture and urban residents.It is the factor causing water pollution that the nitrogen of not absorbed by crops or soil fixing in agricultural land soil and phosphorus enter water body by artificial or natural way.
Ecological channel purification techniques is now widely used a kind of pollutent original position Interception Technology, has the advantages such as flexible arrangement, easy to maintenance, less investment.Now widely used ecological channel purifying method is mainly divided into two classes, one class is planting aquatic plants or lay some refining plants in existing agriculture drainage ditch, as biopurification case etc., current are utilized to retain by the physical-chemical reaction occurred during refining plant and reduce Pollutant levels, but owing to laying route length and dispersion, safeguarding comparatively difficulty, sometimes owing to safeguard pollutent not in time and after causing plant corruption from being newly discharged into water body, causing secondary pollution.Another kind of method is in agriculture drainage ditch, arrange concentrated ecological purification pond, and this mode is safeguarded comparatively simple and convenient, easy to implement.But in enforcement in discovery, the volume for the treatment of pond directly determines decontamination effect improving, taking and a large amount of ploughing that to build Large Copacity treating pond be inappropriate.Therefore, under ensureing that treating pond has the prerequisite of higher purification efficiency, reduce the floor space for the treatment of pond, this has good practical significance to ecological purification pond promoting the use of in agricultural area source is administered as far as possible.
Summary of the invention
The present invention proposes a kind of multilayer overflow type ecological purification pond being applicable to agriculture drainage ditch, have that floor space is little, hydraulic detention time long, the advantage such as easy to maintenance, good purification, its objective is for purifying the eutrophic water of discharging from farmland, reduce widespread pollution from the overuse of fertilizers and pesticides in rural area to the pollution of downstream water, block water the flood season that simultaneously effectively can solve current purifying method problem.
Technical solution of the present invention:
Be applicable to a multilayer overflow type ecological purification pond for agriculture drainage ditch, comprise treating pond, inlet flume, purification tank, core wall, ecological purifying box, gate, lift pump, water inlet pipe.
Above-mentioned treating pond is opened in agriculture drainage ditch, and is communicated with agriculture drainage ditch, is laid with the core wall of some different heights in described treating pond.
Treating pond is separated into two inlet flumes parallel with water (flow) direction and several purification tanks by above-mentioned core wall.Above-mentioned two inlet flumes and the equal symmetrical both sides being distributed in agriculture drainage ditch of several purification tanks, inlet flume is positioned at the outermost for the treatment of pond.
Above-mentioned core wall reduces arrangement gradually by height ecto-entad, and purification tank degree of depth ecto-entad is reduced gradually.
Above-mentioned core wall from inside to outside, offers several permeable holes bottom even-numbered core wall, make to be communicated with bottom two adjacent purification tanks; And the core wall of odd-numbered is complete atresia wall, make adjacent two purification tanks mutually isolated.
Above-mentioned purifying box is positioned in each purification tank, and purifying box is permeable structure, comprises net cage lid, biologic packing material ball, net cage body and activated carbon filter layer, and described biologic packing material ball and activated carbon filter layer are positioned in net cage body.
Above-mentioned net cage lid and net cage body adopt pvc pipe and nylon wire to make, and net cage lid can be opened or close, and facilitates the replacing of Internal biological filling ball and activated carbon filter layer.
Above-mentioned biologic packing material ball makes hollowed out spherical by polyolefin plastics, ball built with the biologic packing material of polyurethane matrix, the pollution substances such as N, P of being used in planar water.
Above-mentioned activated carbon filter layer is vertically positioned in purifying box, and is distributed in distance with biologic packing material ball.
Above-mentioned gate is positioned at treating pond ingress, and gate comprises gate pier, gate beam, floodgate motor and gate leaf.
The both sides being installed on agriculture drainage ditch of above-mentioned two lift pump symmetries, lift pump is connected with water inlet pipe, in the escape canal of water inlet pipe one end open outside gate, aperture position is lower than the water surface elevation of agriculture drainage ditch, and the other end of water inlet pipe is opened in inlet flume.
The beneficial effect that the present invention reaches:
1, the present invention adopts classification series connection purification tank structure, and floor space is little, and treating pond internal volume rate is high, and under identical floor space condition, the ecological purification box number that the present invention can hold is 2 ~ 3 times of common plane formula treating pond, thus improves land use rate.
2, treating pond adopts the design of multilayer overflow type purification tank, rural sewage velocity flow profile in treating pond is even, and hydraulic detention time is long, and sewage can uniformly across all purifying boxs in pond, there is no flow blind angle in pond, improve capacity utilization and the purification efficiency for the treatment of pond.
3, the present invention adopts purifying box to divide the eutrophic water of discharging in farmland to carry out physical filtering and ecological to absorb, having effects of purification quality higher, and changes and easy to maintenance.
4, the present invention adopts symmetric double pump configuration, and double pump can work simultaneously, meets the demand of a large amount of draining of irrigation canals and ditches, also can two lift pump rotation operations, make the purifying box of both sides can obtain certain selfreparing time in turn, extend the replacement cycle of biologic packing material ball, also improve purification efficiency simultaneously.
5, in the farmland water drainage phase, can starting gate Quick drainage, the conveyance capacity of agriculture drainage ditch is not affected.
6, the present invention can reconstruct on original farmland drainage gate and channel basis, and change little to original gate and channel, construction cost is low, easy construction, is convenient to promote the use of.
7, for the occasion of heavy contamination, the present invention can carry out the series connection of many treating ponds and use, and improves decontamination effect improving further.
Accompanying drawing explanation
Accompanying drawing 1 is vertical view of the present invention.
Accompanying drawing 2 is A-A sectional views of Fig. 1.
Accompanying drawing 3 is B-B sectional views of Fig. 1.
Accompanying drawing 4 is C-C sectional views of Fig. 1.
Accompanying drawing 5 is flow path schematic diagram (eliminating purifying box in figure) of the present invention.
Accompanying drawing 6 is purifying box structure iron.
In figure 1 is treating pond, 2 is inlet flumes, 3 is purifying boxs, 4 is core walls, 5 is water inlet pipes, 6 is lift pumps, 7 is farmlands, 8 is water (flow) directions, 9 is agriculture drainage ditchs, 10 is gates, 11 is gate beams, 12 is floodgate motor, 13 is gate piers, 14 is permeable holes, 15 is waters surface, 16 is canal beds, 17 is water channel side slopes, 18 is flow paths, 19 is net cage lids, 20 is biologic packing material balls, 21 is net cage bodies, 22 is activated carbon filter layers, 23 is purification tanks, 24 is gate leaves.
Embodiment
Below in conjunction with embodiment and accompanying drawing, technical solution of the present invention is described in further detail, but protection scope of the present invention is not limited to described embodiment.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, a kind of multilayer overflow type ecological purification pond being applicable to agriculture drainage ditch, comprises treating pond 1, inlet flume 2, purification tank 23, purifying box 3, core wall 4, gate 10, lift pump 6 and water inlet pipe 5.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, above-mentioned treating pond 1 shape is rectangular parallelepiped, and pool wall adopts masonry concrete structure, and treating pond 1 is opened in agriculture drainage ditch 9, is communicated with agriculture drainage ditch 9.The bottom for the treatment of pond 1 and the bottom of agriculture drainage ditch 9 are in one plane.
Above-mentioned core wall 4 is laid in treating pond 1 symmetrically, core wall 4 adopts masonry concrete material, direct block is on the bottom surface for the treatment of pond 1, treating pond 1 is separated into two inlet flumes 2 parallel with water (flow) direction 8 and several purification tanks 23 by core wall 4, all inlet flumes 2 and the equal symmetrical both sides being distributed in agriculture drainage ditch 9 of purification tank 23.
The height of above-mentioned core wall 4 raises from inside to outside gradually, and the difference of altitude of adjacent two pieces of core walls 4 is 30 ~ 40cm, and the height of innermost layer core wall 4 is not less than the overhead height of pool outer water canal side slope 17.
Above-mentioned core wall 4 from inside to outside, offers several permeable holes 14 bottom even-numbered core wall 4, make to be communicated with bottom two adjacent purification tanks 23; And the core wall 4 of odd-numbered is complete atresia wall, make adjacent two purification tanks 23 mutually isolated.
Above-mentioned inlet flume 2 is positioned at the outermost for the treatment of pond 1, and inlet flume 2 bottom surface adopts masonry concrete structure, and the degree of depth is 30 ~ 40cm.
Above-mentioned gate 10 is positioned at the ingress for the treatment of pond 1, and gate 10 comprises gate pier 13, gate beam 11, floodgate motor 12 and gate leaf 24.
The both sides being installed on agriculture drainage ditch 9 of above-mentioned two lift pump 6 symmetries, lift pump 6 is connected with water inlet pipe 5, in the escape canal 9 of water inlet pipe 5 one end open outside gate 10, aperture position should lower than the water surface 15 height of agriculture drainage ditch 9, the other end of water inlet pipe 5 is opened in inlet flume 2, lift pump 6 should have enough lifts, the rural sewage in agriculture drainage ditch 9 outside gate 10 can be extracted in the inlet flume 2 for the treatment of pond 1.
Above-mentioned purifying box 3 is permeable structure, as shown in Figure 6, comprises net cage lid 19, biologic packing material ball 20, net cage body 21 and activated carbon filter layer 22.Above-mentioned net cage lid 19 and net cage body 21 adopt pvc pipe and nylon wire to make, and net cage lid 19 can be opened or close, and facilitate the replacing of Internal biological filling ball 20 and activated carbon filter layer 22.
Above-mentioned biologic packing material ball 20 makes hollowed out spherical by polyolefin plastics, ball built with the biologic packing material of polyurethane matrix, the pollution substances such as N, P of being used in planar water.Biologic packing material ball 20 is stacked in purifying box 3.Above-mentioned activated carbon filter layer 22 is vertically positioned in purifying box 3, and is distributed in distance with biologic packing material ball 20.
Above-mentioned purifying box 3 is stacked in purification tank 23, and the stacking height of purifying box 3 is lower than place purification tank 23 overhead height 10cm ~ 20cm, and it is 15cm ~ 20cm that level stacks spacing.
Principle of work of the present invention:
In day-to-day operation, the discharge of agriculture drainage ditch 9 is less, and gate 10 is in closing condition, and lift pump 6 is opened, be extracted in inlet flume 2 by the rural sewage in agriculture drainage ditch 9 outside gate 10 by water inlet pipe 5, the flow path 18 of water in treating pond 1 as shown in Figure 5.When the water level in inlet flume 2 arrives the overhead height of inlet flume 2, water can overflow from the top of inlet flume 2 medial septal waterwall 4, flow in adjacent purification tank 23.Enter into the rural sewage for the treatment of pond 1 under the pressure effect of self, flow between each purification tank 23, as offered permeable hole 14 bottom the core wall 4 between adjacent two-step purification groove 23, water can flow into the bottom of next stage purification tank 23 by permeable hole 14, as there is no permeable hole bottom the core wall 4 between adjacent two-step purification groove 23, water then can overflow from core wall 4 top inside higher level's purification tank 23, enters into next stage purification tank 23.Because purification tank 23 has certain water capacity, and adopt classification cascaded structure, velocity of flow is slow betwixt to make sewage, is evenly distributed, and is conducive to the nutritive substance in water and the microbial film in biologic packing material ball 20 carries out sufficient physical-chemical reaction.Microbial film in biologic packing material ball 20 can retain and adsorb the easy biodegradable organism such as N, P in rural sewage, and active carbon filtration layer 22 partly can remove the hardly degraded organic substance such as heavy metal element, free chlorine, phenol in water body, simultaneously also can algae in filtering water body and partial particulate suspended substance.After water ecto-entad has flowed through all purification tanks 23, finally flow back in the agriculture drainage ditch 9 in gate 10, thus completed the scavenging process to rural sewage.Present invention employs two lift pumps 6 to supply water respectively to the both sides for the treatment of pond 1, two lift pumps 6 can work simultaneously, to meet the demand of the larger draining of irrigation canals and ditches, also can two lift pump 6 rotation work, make the biologic packing material ball 20 in the purification tank 23 for the treatment of pond 1 both sides can obtain one selfreparing period in turn, make its microbial film and microflora recover purification efficiency, thus extend the replacement cycle of biologic packing material ball 20, also improve purification efficiency simultaneously.At flooding period, lift pump 6 cuts out, starting gate 10 carries out farmland water drainage operation, the conveyance capacity for the treatment of pond 1 on original agriculture drainage ditch 9 does not affect, the purifying box 3 be laid in purification tank 23 also can not be subject to water impact and cause biofilm structure to damage, therefore during draining flooded fields, purifying box 3 need not take out, and alleviates the workload of maintenance.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (7)

1. be applicable to a multilayer overflow type ecological purification pond for agriculture drainage ditch, it is characterized in that: comprise treating pond, inlet flume, purification tank, core wall, ecological purifying box, gate; Described treating pond is opened in agriculture drainage ditch, and is communicated with agriculture drainage ditch, is laid with the core wall of some different heights in described treating pond; Treating pond is separated into the purification tank of two inlet flumes and several different depthss by described core wall; Described ecological purifying box is laid in purification tank; Described gate locating is in treating pond ingress.
2. a kind of multilayer overflow type ecological purification pond being applicable to agriculture drainage ditch according to claim 1, it is characterized in that: described two inlet flumes and the equal symmetrical both sides being distributed in agriculture drainage ditch of several purification tanks, inlet flume is positioned at the outermost for the treatment of pond, and purification tank reduces mode gradually by depth value ecto-entad and arranges.
3. a kind of multilayer overflow type ecological purification pond being applicable to agriculture drainage ditch according to claim 1, it is characterized in that: described core wall from inside to outside, offer several permeable holes bottom even-numbered core wall, make to be communicated with bottom two adjacent purification tanks; And the core wall of odd-numbered is complete atresia wall, make adjacent two purification tanks mutually isolated.
4. a kind of multilayer overflow type ecological purification pond being applicable to agriculture drainage ditch according to claim 1, it is characterized in that: described treating pond also comprises lift pump and water inlet pipe, described lift pump arranges two, symmetry is installed on the both sides of agriculture drainage ditch, lift pump is connected with water inlet pipe, in the agriculture drainage ditch of water inlet pipe one end open outside gate, aperture position is lower than the water surface elevation of agriculture drainage ditch, and the other end of water inlet pipe is opened in inlet flume.
5. a kind of multilayer overflow type ecological purification pond being applicable to agriculture drainage ditch according to claim 1, it is characterized in that: described purifying box is permeable structure, comprise net cage lid, biologic packing material ball, net cage body and activated carbon filter layer, described biologic packing material ball and activated carbon filter layer are positioned in net cage body.
6. a kind of multilayer overflow type ecological purification pond being applicable to agriculture drainage ditch according to claim 5, it is characterized in that: described biologic packing material ball makes hollowed out spherical by polyolefin plastics, ball built with the biologic packing material of polyurethane matrix, the pollution substances such as N, P of being used in planar water.
7. a kind of multilayer overflow type ecological purification pond being applicable to agriculture drainage ditch according to claim 5, is characterized in that: described activated carbon filter layer is vertically positioned in purifying box, and is distributed in distance with biologic packing material ball.
CN201410564156.2A 2014-10-21 2014-10-21 Multilayer overflowing type ecological cleaning pond applicable to farmland drainage ditch Pending CN104310572A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105366799A (en) * 2015-12-11 2016-03-02 山东大学 Net cage type biological filler sewage treatment device and working method and application thereof
CN111340350A (en) * 2020-02-21 2020-06-26 中国水利水电科学研究院 Gate group regulating method for realizing local hydraulic scouring of long-distance water delivery channel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203021406U (en) * 2013-01-15 2013-06-26 天津大学 Multistep submerged dam eco-purification channel system for farmland non-point source pollution
CN103319005A (en) * 2013-07-08 2013-09-25 河海大学 Moveable assembled water quality purifier for field drainage ditch
CN104003574A (en) * 2014-05-21 2014-08-27 河海大学常州校区 Labyrinth-type ecological purification pool suitable for drainage ditch in farmland

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203021406U (en) * 2013-01-15 2013-06-26 天津大学 Multistep submerged dam eco-purification channel system for farmland non-point source pollution
CN103319005A (en) * 2013-07-08 2013-09-25 河海大学 Moveable assembled water quality purifier for field drainage ditch
CN104003574A (en) * 2014-05-21 2014-08-27 河海大学常州校区 Labyrinth-type ecological purification pool suitable for drainage ditch in farmland

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105366799A (en) * 2015-12-11 2016-03-02 山东大学 Net cage type biological filler sewage treatment device and working method and application thereof
CN105366799B (en) * 2015-12-11 2018-06-12 山东大学 A kind of cage type biological filler sewage-treatment plant and its method of work and application
CN111340350A (en) * 2020-02-21 2020-06-26 中国水利水电科学研究院 Gate group regulating method for realizing local hydraulic scouring of long-distance water delivery channel
CN111340350B (en) * 2020-02-21 2020-10-16 中国水利水电科学研究院 Gate group regulating method for realizing local hydraulic scouring of long-distance water delivery channel

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