CN101234821B - Method for treating landscape water body eutrophication pollution - Google Patents
Method for treating landscape water body eutrophication pollution Download PDFInfo
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- CN101234821B CN101234821B CN2008100337378A CN200810033737A CN101234821B CN 101234821 B CN101234821 B CN 101234821B CN 2008100337378 A CN2008100337378 A CN 2008100337378A CN 200810033737 A CN200810033737 A CN 200810033737A CN 101234821 B CN101234821 B CN 101234821B
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Abstract
The invention relates to a method for treating eutrophication pollution of landscape water, and combines a physical-chemical technique and an ecological floating island technique, utilizing a constructed enclosure to divide an ecological purification area and a strengthening purification area in the landscape water and plant an ecological floating island in the ecological purification area. Besides the ecological floating island planted in the strengthening purification area, a medicine feeding system and an aeration system are also arranged in the strengthening purification area; by utilizing a diving pump, the landscape water is led to the purification areas; the medicine feeding system and the aeration system are opened; through the effects of physical-chemical adsorption and coagulation settlement, pollutants are rapidly removed; at the same time, the ecological floating island closely distributed on the water surface has good effects of wind and storm resistance and light screening, thus providing a good hydraulic condition for the settlement of the pollutants; due to a loss of light source, the algae settling under water can not float any more, thus dying gradually; in addition, a certain quantity of nutrition salt released in a decomposition of the pollutants and dying of the algae can be fully absorbed by the ecological floating island; the high quality water treated in the ecological purification areas flows back to the landscape water.
Description
Technical field
The present invention relates to a kind of method of administering the landscape water body eutrophication pollution, materialization technology and ecological floating island technology are combined, the pollution of landscape water body is effectively administered.Belong to field of environment engineering technology.
Background technology
In recent years, incity, city landscape water body such as big or small lake, man-made lake have become the key content that each townscape is built.The architect is " hydrophilic " demand that satisfies the residential quarters resident, adopts and borrows scape and make scape, and water scenery is introduced the biotope, creates the quiet and tastefully laid out physical environment in residential quarters.Landscape water has become the bright spot of townscape line, also becomes the important attraction of high-end residential sub-district.Because landscape water mostly is the sealing unhurried current water body of static or mobile difference, characteristics such as generally have little, the easy pollution of water surface area, water environment capacity is little, water body self-purification ability is low, manage bad, be easy to become the receptor of resident living sewage, rainwater and rubbish, thereby cause water body pollution in various degree, can cause body eutrophication when serious, cause algal bloom in the water, the water body blackening is fouled, physical environment around having a strong impact on and resident's living environment, this has become a Urban Ecology Environment Construction difficult problem.
The difficult point that eutrophic landscape water body is handled be following some:
1. even (TP＞0.02mg/L, TN＞0.2mg/L) is extremely low also to be enough to cause algae excessive propagation, therefore is difficult to prevent and treat wawter bloom by cutting down nutritive salt for concentration of nitrogen and phosphorus in the landscape water body.
2. when envrionment conditions was suitable, algae proliferation speed was exceedingly fast in the landscape water body, just can increase more than 1 times less than 2 days algae density, and conventional water treatment device is difficult to tackle so high pollution load.
3. the outward appearance of water treatment device and landscape water body are difficult to coordinate.
Though existing landscape water treatment technology kind is numerous, respectively has superiority, and is difficult to overcome the above problems all sidedly.As the filtration, purification method contaminated landscape water body extracting is got up, utilize suspended state solid pollutant and small part algae in the filter plant removal water that loads fillers such as quartz sand.The shortcoming of this method is that power consumption is bigger, the running cost height, and because the individuality of most of algae is all extremely small, removal effect is also not obvious; Device is understood blockage phenomenon after operation for some time simultaneously, must constantly carry out back flushing, operational management relative complex.Hover (bed) method is that the eutrophication that develops rapidly is is in recent years prevented and treated method, this method is utilized floating islands such as plastic foam, directly absorb in the water nutritive salt such as nitrogen phosphorus water surface planting humidogene and waterplant, the key factor that causes the wawter bloom generation with removal, also has simultaneously comparatively ideal landscape effect, " a kind of ecology absorption view floating bed device and method that is used for treating landscape water body " disclosed as Chinese invention patent CN1644533, and paper " flower flying saucer ecoscape chinampa technology and greening waterborne " (farming still. flower gardening, 2006 (1): 46-47) introduced a kind of novel buoyant means " flower flying saucer ", can be implemented in the lake, reservoir, the pond, various Lu Sheng flowers of plantation and economic plants comprise Cyclamen persicum in the pond, Sunflower Receptacle, chrysanthemum, water spinach, wilson iris, gladiolus, Chinese rose etc., form so-called ecological floating island, the shortcoming of this method is that plant absorbing nitrogen phosphorus efficient is lower, required chinampa area is bigger, often account for more than 25% of the view water surface, also be difficult to the sudden algal bloom of reply simultaneously.Directly medication is promptly at the blue-green algae raised growth, and the landscape water body turbidity adds medicament and removes algae and deposit fouling thing when significantly rising.This method can reach get instant result remove the algae effect, but there is significant disadvantage the most, though be that the bottom is gone in the algae coagulative precipitation, but survival still, and general landscape water body is all more shallow, and water-bed illuminance also is enough to support the algal grown breeding, therefore can recover active again after after a while, again even more serious wawter bloom phenomenon appears in come-up; The phenomenon of liberating nitrogen, phosphorus in water again also can appear after sedimentary in addition pollutent and algae were long-time.The shading method also is the practical technique that is subjected to extensive concern recently, its principle is for utilizing the physics light screening material to cover the water body 1/3 above water surface, suppress the blue-green algae growth and breeding, its shortcoming is not have removal effect for nutritive salt such as nitrogen phosphorus in the water, required shading area is excessive simultaneously, has a strong impact on landscape effect.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of method of administering the landscape water body eutrophication pollution is provided, can absorb excess nitrogen phosphorus in the water, algae excessive is bred, with serious pollution landscape water body is effectively administered, Zhong Zhi various hydroponic flowers, ornamental waterplant can form graceful harmonious ecological floating island view simultaneously.
For realizing this purpose, the present invention combines materialization absorption and precipitation technology with the ecological floating island technology, utilize artificial enclosure in landscape water body, to be partitioned into ecological purification district and strengthened purification district, at ecological purification district plantation ecological floating island, except the plantation ecological floating island, also be equipped with administration system and aerating system in the strengthened purification district; Utilize submersible pump that landscape water is introduced purifying area, open administration system and aerating system, by effects such as materialization absorption, flocculation sediments pollutent is removed fast, meanwhile, the ecological floating island of the densely covered water surface plays fabulous anti-stormy waves and shaded effect, for the precipitation of pollutent provides hydraulics preferably, the algae that sinks under water no longer floats owing to lose light source, dead gradually, ecological floating island can also fully absorb owing to pollutent decomposes and the dead a certain amount of nutritive salt that discharges of algae in addition; High-quality water after the ecological purification district the handles landscape water body of releasing back.
Method of the present invention specifically may further comprise the steps:
1, adopts artificial enclosure from landscape water body, to be partitioned into the part waters and be used for purification of water quality, this waters is divided into strengthened purification district and ecological purification district, determines the water surface area that each purifying area is required according to handling the water yield, region average depth and required hydraulic detention time day.The hydraulic detention time in strengthened purification district was got 10-30 minute, and the hydraulic detention time in ecological purification district was got 4-24 hour.Adopt water hole to be connected between strengthened purification district and the ecological purification district, between ecological purification district and the landscape water body.Utilize submersible pump to extract polluted water, make it to flow through in turn strengthened purification district, ecological purification district, the backwater body of releasing after the processing at landscape water body.
2, throw in ecological floating island at strengthened purification district and the ecological purification district water surface, make fraction of coverage reach 90-100%, formed superaqual landscape with the grace of surrounding environment harmony.Utilize ecological floating island that landscape water is purified, remove macrobead suspended matter in the water, remove nitrogen, phosphorus, the effect of playing shading simultaneously and subduing stormy waves by the effect of chinampa plant and adsorbing base.
3, at strengthened purification district configuration administration system and aerating system, administration system is made up of grug feeding jar, dosing pipe, is fixed on the support timber that is provided with in the strengthened purification district.Because action of gravity, from flowing into the strengthened purification district, long-time running materialization medicament uses up laggard pedestrian worker's dosing to the materialization medicament by grug feeding jar.Aerating system adopts pipeline aeration form, and promptly aerated conduit is embedded in the bottom, installs aeration head on the pipeline additional, and pipe connection is arranged at the gas blower on bank.Aerating system is by the switch box control opening and closing that are arranged at the bank.
4, utilize submersible pump that contaminated landscape water is pumped into the strengthened purification district, open administration system and aerating system, materialization medicament and polluted water are mixed and flocculation reaction takes place, inflow ecological purification district; Throw out in the polluted water is in the sedimentation gradually of ecological purification district, and purifying waste water after the processing flowed back to landscape water body.
In the inventive method, the materialization medicament that adopts in the described administration system is chitosan, polyaluminium sulfate, polyacrylamide or hydrated calcium silicate.
Innovation part of the present invention be with have cut down nitrogen phosphorus, shading disappear wave and landscape function ecological floating island and have and strengthen the materialization treatment system of removing algae scrubbing effect and organically make up, become the landscape water body eutrophication pollution improvement method that has practical value, the function that performance simultaneously takes stopgap measures and effects a permanent cure.Advantage of the present invention is embodied in:
1. at the excess nitrogen phosphorus and the organic pollutant that cause body eutrophication, utilize ecological floating island that it is constantly absorbed on the one hand, on the other hand, utilize the materialization system that it is implemented strengthened purification.
2. at the phenomenon of the excessive propagation of harmful algae, utilize the materialization system that it is implemented to strengthen coagulative precipitation on the one hand, on the other hand, utilize ecological floating island disappear wave and shading, be algae and the better waterpower environment of other pollutents precipitation creation, prevent that simultaneously the algae that sinks to the bottom from recovering active, again come-up.
3. the inventive method operation is simple, and unit construction cost, working cost and overhead charges are cheap, implement in the landscape water body territory, outward appearance is graceful ecological floating island, harmonious with landscape water body, avoided conventional art to need or the water surface is built large-scale structures on land, influence the problem of view.
Description of drawings
Fig. 1 is for purifying the synoptic diagram that the zone is divided among the present invention.
Among Fig. 1,1 is landscape water body, and 2 is the strengthened purification district, and 3 is ecological purifying area, and 4 is artificial enclosure.
The synoptic diagram that Fig. 2 administers the landscape water body zoning for the present invention.
Among Fig. 2,1 is landscape water body, and 2 is the strengthened purification district, and 3 is ecological purifying area, and 5 is water hole, and 6 is ecological floating island, and 7 is administration system, and 8 is aerating system, and 9 is submersible pump, and 10 is gas blower.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described in further detail.Following examples do not constitute limitation of the invention.
The method that the present invention administers the landscape water body eutrophication pollution specifically comprises following content:
1, at first, synoptic diagram is divided in purification zone as shown in Figure 1, utilizes artificial enclosure 4 to be separated out a part of waters in landscape water body 1 and is used for purification of water quality, and this part waters is divided into strengthened purification district 2, ecological purification district 3 successively.Determine described strengthened purification district 1, the required separately water surface area in ecological purification district 2 respectively according to handling the water yield, region average depth and required hydraulic detention time day.Wherein, the hydraulic detention time in strengthened purification district 1 was got 10-30 minute, and the hydraulic detention time in ecological purification district was got 4-24 hour.
If strengthened purification district 2, the required separately water surface area in ecological purification district 3 are respectively S
2, S
3According to day handling water yield V, region average depth H
1, H
2Required hydraulic detention time is respectively T
2, T
3, then:
The total area in described strengthened purification district 1 designs as follows:
S
2＝V/(H
2×T
2)
S wherein
2Be strengthened purification district total area m
2V is a day processing water yield m
3/ d; H
2Be strengthened purification district average depth m; T
2Be the residence time, got 10-30 minute;
The total area in described ecological purification district 3 designs as follows
S
3＝V/(H
3×T
3)
S wherein
3Be ecological purifying area total area m
2V is a day water withdrawal m
3/ d; H
3Be ecological purifying area average depth m; T
3Be the residence time, got 4-24 hour.
Between strengthened purification district 2 and the ecological purification district 3, between ecological purification district 3 and the landscape water body 1, water hole 5 is set is connected, as shown in Figure 2.
2, as shown in Figure 2, ecological floating island 6 is laid in strengthened purification district 2 and ecological purification district 3 water surfaces, is made of some front and back and end to end sprawling in the ecological floating island of the water surface, and the patent that ecological floating island is CN1644533 with reference to existing publication number is built.Ecological floating island 6 reaches 90～100% in the fraction of coverage of purifying area.Utilize 6 pairs of landscape water of ecological floating island to purify, remove macrobead suspended matter in the water, remove nitrogen, phosphorus, the effect of playing shading simultaneously and subduing stormy waves by the effect of chinampa plant and adsorbing base.
3, as shown in Figure 2,2 configuration administration system 7 and the aerating systems 8 in the strengthened purification district, described administration system is made up of 20-30L grug feeding jar, dosing pipe, the support timber is set in the strengthened purification district, grug feeding jar is fixed thereon, because action of gravity, from flowing into strengthened purification district 2, long-time running materialization medicament uses up laggard pedestrian worker's dosing to the materialization medicament by grug feeding jar.Described aerating system 8 adopts pipeline aeration forms, and promptly aerated conduit is embedded in the bottom, installs aeration head at the pipeline of strengthened purification district part additional every 3-5m, and aerated conduit is connected in the gas blower 10 on bank.Aerating system is controlled opening and closing by switch box.
4, utilize submersible pump 9 that contaminated landscape water is pumped into strengthened purification district 2, open administration system 7 and aerating system 8, dosing and while aeration agitation make materialization medicament and polluted-water mixing, pollutent and algae combine with the materialization medicament, after this flow into ecological purification district 3 sedimentation gradually, thereby pollutent and algae are removed in water.Purifying waste water after the processing flowed back to landscape water body 1.The materialization medicament that is adopted is commercially available chitosan, polyaluminium sulfate, polyacrylamide, hydrated calcium silicate etc.
In one embodiment of the invention, the experiment place is water surface area 5000m
2, certain villa district landscape water body of average depth 2m, the serious wawter bloom phenomenon of the normal generation of this water body when summer, amount of algae is 1.5 * 10 in the water
9Individual/L, and based on deleterious microcystic aeruginosa, 0.2 meter of transparency, turbidity is 101 °, and COD is 35mg/L, and total nitrogen is 5.3mg/L, and total phosphorus is 0.5mg/L.For improving water quality, adopt method of the present invention that the waterhead area zoning is administered, as shown in Figure 2.
Adopt artificial enclosure to be partitioned into water surface area 10m respectively according to lineament bank
2And 130m
2Strengthened purification district and ecological purification district.It is 1000m that day is handled the water yield
3The hydraulic detention time 15min in strengthened purification district, the residence time in ecological purification district is 8hr.Build up the ecological floating island designed in the strengthened purification district and the ecological purification district water surface, make fraction of coverage reach 90% according to Chinese patent CN1644533.
It is 1cm water hole 5 that row's diameter is offered on enclosure top between strengthened purification district 2 and ecological purification district 3, and water hole 5 is arranged on and is lower than water surface 40cm place, and each water hole 5 is 0.2m at interval; Similarly, it is 1cm water hole 5 that row's diameter is offered at the enclosure middle part between ecological purification district 3 and landscape water body 1, and water hole is arranged on and is lower than water surface 1m place, and each water hole 5 is 0.2m at interval.
At strengthened purification district configuration administration system and aerating system, administration system by grug feeding jar and fixedly timber form, grug feeding jar volume 10L is provided with timber in the strengthened purification district, grug feeding jar is fixed thereon; Aerated conduit is embedded in the bottom, installs aeration head additional every 5m, the other one section gas blower that is connected in the bank of pipeline at the pipeline of strengthened purification district part.Switch box is set is used for the Controlling System opening and closing.
In the 7-8 month that algal bloom takes place frequently, open administration system and the aerating system and the non-stop run in strengthened purification district, constantly add chitosan, make dosage reach 2mg/L, and lasting aeration agitation makes polluted-water and materialization medicament mixing in the strengthened purification district of inflow, impel pollutent and algae and materialization medicament to combine, after this flow into the sedimentation gradually of ecological purification district, thereby pollutent and algae are removed in water.Landscape water body was constantly handled and was purified via the ecological composite system of materialization with 5 days round-robin cycles like this.Eutrophic landscape water body was handled the back transparency through 10 days and is reached 1.5 meters, and turbidity is 7 °, and COD is 11mg/L, and total nitrogen is 1mg/L, and total phosphorus is 0.1mg/L, and dissolved oxygen is 9mg/L.The pollution of landscape water body is effectively administered.
Claims (2)
1. method that is used to administer the landscape water body eutrophication pollution is characterized in that may further comprise the steps:
1) adopts artificial enclosure (4) from landscape water body (1), to be partitioned into the part waters and be used for purification of water quality, this waters adopts artificial enclosure (4) to be divided into strengthened purification district (2) and ecological purification district (3), determine the water surface area that each purifying area is required according to handling the water yield, region average depth and required hydraulic detention time day, the hydraulic detention time in strengthened purification district (2) was got 10-30 minute, and the hydraulic detention time of ecological purification district (3) was got 4-24 hour; Between strengthened purification district (2) and ecological purification district (3), adopt water hole (5) to be connected between ecological purification district (3) and the landscape water body (1);
2) throw in ecological floating island (6) in strengthened purification district (2) and ecological purification district (3) water surface, make fraction of coverage reach 90～100%, utilize ecological floating island (6) that landscape water is purified, remove macrobead suspended matter in the water, nitrogen, phosphorus, the effect of playing shading simultaneously and subduing stormy waves are removed in effect by chinampa plant and adsorbing base;
3) at strengthened purification district (2) configuration administration system (7) and aerating system (8), described administration system (7) is made up of grug feeding jar, dosing pipe, is fixed on the support timber that is provided with in the strengthened purification district (2); In the described aerating system (8), the aerated conduit that installs aeration head additional is embedded in the bottom, and aerated conduit is connected in the gas blower (10) on bank, and aerating system (8) is by the switch box control opening and closing that are arranged at the bank;
4) utilize submersible pump (9) that contaminated landscape water is pumped into strengthened purification district (2), open administration system (7) and aerating system (8), materialization medicament and polluted water are mixed and flocculation reaction takes place, inflow ecological purification district (3); Throw out in the polluted water is in ecological purification district (3) sedimentation gradually, and purifying waste water after the processing flowed back to landscape water body (1).
2. according to the method that is used to administer the landscape water body eutrophication pollution of claim 1, it is characterized in that described materialization medicament is chitosan, polyaluminium sulfate, polyacrylamide or hydrated calcium silicate.
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| CN2008100337378A CN101234821B (en) | 2008-02-21 | 2008-02-21 | Method for treating landscape water body eutrophication pollution |
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|---|---|---|---|
| CN2008100337378A CN101234821B (en) | 2008-02-21 | 2008-02-21 | Method for treating landscape water body eutrophication pollution |
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| CN101234821B true CN101234821B (en) | 2010-04-14 |
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| CN101913731B (en) * | 2010-07-28 | 2012-05-30 | 清华大学 | Method for controlling eutrophication of landscape water supplied by regenerated water |
| CN102001753A (en) * | 2010-10-20 | 2011-04-06 | 环境保护部南京环境科学研究所 | Ecological corridor for removing nitrogen and phosphorus of micro-polluted river water and construction method thereof |
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| CN104386808B (en) * | 2014-11-28 | 2016-05-11 | 武汉理工大学 | A kind of enhanced flocculation-aerobic nitrification treatment system for low ammonia nitrogen water source |
| CN108396716B (en) * | 2018-01-16 | 2023-07-25 | 中国科学院南京地理与湖泊研究所 | Aquatic water conservancy diversion enclosure |
| CN109264925B (en) * | 2018-09-28 | 2020-07-03 | 常州大学 | Urban landscape river pollution treatment method |
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| CN112079519B (en) * | 2020-07-22 | 2022-09-27 | 中交第二航务工程局有限公司 | Emergency and long-acting control method for eutrophic water bloom |
| CN111977761A (en) * | 2020-08-31 | 2020-11-24 | 江南大学 | Method for treating cyanobacterial bloom by using black membrane, disturbance and iron element in cooperation |
| CN112340932B (en) * | 2020-10-15 | 2023-01-06 | 长江水利委员会长江科学院 | Method for improving and treating water quality of rainwater collection type reservoir |
| CN113243155A (en) * | 2021-05-27 | 2021-08-13 | 安徽大学 | Method for controlling water resource and nutrient element recycling in hilly and mountainous areas |
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