CN102966071B - In-situ treatment method for shallow flow rejuvenated water riverway - Google Patents
In-situ treatment method for shallow flow rejuvenated water riverway Download PDFInfo
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- CN102966071B CN102966071B CN201210430606.XA CN201210430606A CN102966071B CN 102966071 B CN102966071 B CN 102966071B CN 201210430606 A CN201210430606 A CN 201210430606A CN 102966071 B CN102966071 B CN 102966071B
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Abstract
The invention relates to an in-situ treatment method of a shallow flow rejuvenated water riverway. According to the method, a roundstone bed shallow flow riverway is constructed, and an artificial biological filler and a compound nano fiber filler are arranged in a roundstone bed, so as to perform in-situ advanced treatment on river water which utilizes rejuvenated water as a water supplement source. According to the method, an in-situ treatment technology is adopted, the river water is not needed to be guided out of a river water system, and the water body can be directly treated in the waterway, so that the sewage transportation link is omitted, and secondary pollution can be prevented from being caused.
Description
Technical field
The invention belongs to field of environment engineering, be specifically related to a kind of shallow stream regenerated water water course in situ improvement method.
Background technology
The problems such as China's city river ubiquity cleans that water recharging shortage, channel flow are poor, river course and riverside zone ecosystem destruction, self-purification capacity seriously disappears, and in addition, because various pollution sources are difficult to control in a short time, water quality of river worsens serious.Tradition river regulation is often taked desilting and changes the municipal engineering means such as water, may have certain effect in a short time, but cure the symptoms, not the disease, and because the ability of the river self-purification is not restored, the problem that river course, Polluted Urban exists is difficult to be effected a radical cure.
River regulation at present mainly combines Ecological Restoration Project and municipal engineering, and integrated multiple control measures, and the comprehensive regulation is carried out in river course.Ecological Restoration Project concentrates on riverside zone mostly to be carried out, and comprises ecological revetment engineering, very water and floatingleaved plant structure, submerged plant recovery, plant floating bed layout etc.There is certain limitation in riverside zone Ecological Restoration Project, in the dry season, pollution of area source source is little, only at main stem, has current, and current only contact with main stem, and relevant Lakeside Zone ecological management technology is difficult to bring into play clean-up effect.In addition, riverside zone restoration of the ecosystem also faces several large problems: the fluctuation in rainy season of city river water level obviously, is unfavorable for floatingleaved plant normal growth; River course emphasis flood control section flinty slope transformation and the plantation of high bar emergent aquactic plant may affect flood control safety; Upright hard abrupt slope is difficult to carry out ecological reconstruction etc.
Although some river has cut dirt, and hold back water body and be re-used as moisturizing water source, river course through dealing carefully with after reaching one-level A discharge standard, but river regulation General Requirements water quality of river reaches surface water V class, IV standard even, moisturizing is as without further processing and be difficult to reach improvement requirement.In addition, hold back water body after treatment, outlet water organic substance component is in the majority with hardly degraded organic substance, utilizes traditional means to be difficult to reach good clean-up effect.
Shallow stream hard river course, three light cities for upright abrupt slope, the moisturizing of employing regenerated water, is necessary to develop suitable improvement method.
Summary of the invention
The present invention is directed on upright abrupt slope, adopt three light urban hard river courses of regenerated water moisturizing how to administer this technical barrier, propose a kind of shallow stream regenerated water water course in situ improvement method.By the present invention, build the shallow fluid stream channel of gravel bed, and perpendicular to the water surface, arrange artificial bio-membrane's filler and composite nano fiber filler above gravel bed, on river course, to take the river water that regenerated water is moisturizing water source, carry out in-situ treatment, make river water body leading indicator rise to surface water V class standard from one-level A discharge standard.
The shallow stream regenerated water water course in situ improvement method that the present invention proposes, concrete steps are as follows:
(1) choose three light urban hard river courses on one section of upright abrupt slope, during the dry season in the upstream in this river course and downstream establish dam and retain, this section of river course carried out to ecological dredging, and is exposed to the sun;
(2) be parallel to riverbank direction, plant the emergent vegetation zone of low bar in two sides, river course, low bar emergent aquactic plant can effectively be tackled pollution of area source, firm riverbank, and to river course, flood discharge has no adverse effects.
(2) in bottom, this section of river course, lay layer of gravel, lay altogether two-layerly, it is the gravel of 80 ~ 100mm that the layer of gravel that is positioned at lower floor is selected particle diameter, is highly 10 ~ 15cm, and it is the gravel of 15 ~ 25mm that the layer of gravel that is positioned at upper strata is selected particle diameter, is highly 15 ~ 20cm;
(3) above the layer of gravel of upper strata, perpendicular to the water surface, arrange packing layer, described packing layer is by artificial bio-membrane's filler and composite nano fiber media assemblage, and artificial bio-membrane's filler and composite nano fiber filler are alternately arranged perpendicular to the water surface;
(4) remove the interception dam that this section of river course upstream and downstream built temporarily, in upstream, this section of river course, build rubber dam, to administering the water level in river course, regulate, the depth of water that makes to administer in river course is less than or equal to 30cm.Rubber dam can regulate and administer water level in section in the period when a river is at its normal level and dry season, can emptying in flood season, can not affect the flood carrying capacity in river.
In the present invention, the plant variety that emergent vegetation zone is selected is the low bar emergent aquactic plants such as iris, calamus, and planting density is 3-5 clump/rice.
In the present invention, artificial bio-membrane's filler adopts elastic filler or combined stuffing, and described elastic filler is hairbrush shape serial type biologic packing material, and combined stuffing is plate-like and plant fiber combination type biological filler.Artificial bio-membrane's packing specific area is larger, suitable various microbial adhesion, filling surface after a period of time attached biological film, effective various pollutants in purifying water body.
In the present invention, described composite nano fiber filler adopts nanometer titanic oxide composite photochemical catalyst material, under the near ultraviolet excitation of titanium dioxide optical catalyst in composite nano fiber filler in natural lighting, can activate the hydroxyl radical free radical that hydrone produces high oxidative capacity, organic pollutants is degraded into micromolecular inorganic nitrogen and mineralizer.
The present invention has following beneficial effect:
The present invention utilizes the comprehensive function of gravel bed and biologic packing material to carry out advanced treating to river water body.Gravel bed accessory have hold back, the effect of adsorption fouling thing; Artificial bio-membrane's filler and gravel bed surface can form biomembrane, are conducive to the removal to the various pollutants of river water body; Ultraviolet luminous energy excites the titanium dioxide in composite nano fiber filler to produce photocatalysis oxidation reaction, and hardly degraded organic substance in water body is removed; Administer the section depth of water and be controlled at 30cm and be conducive to promote Dissolved Oxygen in Water content with interior, promote penetrating of ultraviolet light, give full play to photocatalytic Degradation, strengthen organic degraded.Low bar emergent vegetation zone is planted in two sides, river course, can effectively tackle pollution of area source.The present invention adopts original position improvement technology, without river being drawn to river course water system, can on river course, directly to water body, process, and has reduced sewage transhipment link, and can avoid causing secondary pollution.
Accompanying drawing explanation
Fig. 1 is a kind of construction sectional schematic diagram of take the city river original position improvement method that regenerated water is moisturizing water source in the embodiment of the present invention.
Number in the figure: 1 is emergent vegetation zone, 2 is the first layer of gravel, and 3 is the second layer of gravel, and 4 is packing layer.
The specific embodiment
Precondition of the invention process is that two sides, river course complete a section dirt, the main nourishment source that regenerated water or more clean water body are this section substantially.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Choose three light urban hard river courses on one section of upright abrupt slope, during the dry season, in these upstream and downstream, section, establish dam and retain, this section is carried out ecological dredging and is exposed to the sun.
Be parallel to riverbank, in two sides, river course, cloth sets low bar emergent vegetation zone 1, and selecting plant variety is wilson iris, and planting density is 3-5 clump/rice.
In this section, lay gravel bed, be highly about 30cm, lay altogether two-layer.It is the gravel 2 of 100mm that lower floor selects particle diameter, is highly 15cm, and it is the gravel 3 of 25mm that particle diameter is selected on upper strata, is highly 15cm.
Packing layer 4 is alternately arranged perpendicular to the water surface in gravel top, upper strata, is mainly A Ke trail filler and titanium dioxide composite nano fiber filler, and every cube of water body arranged 0.1 square.
Remove the interception dam that upstream and downstream is built temporarily, in this upper river, section, build rubber dam, this section water level is regulated, the depth of water that makes to administer in section is 30cm left and right.The shallow fluid stream channel of this gravel bed can be brought into play catharsis preferably in the river period when a river is at its normal level and dry season.
Through administering, this section ammonia nitrogen, total phosphorus and COD concentration all can reach surface water V class standard.
Claims (2)
1. a shallow stream regenerated water water course in situ improvement method, is characterized in that concrete steps are as follows:
(1) choose three light urban hard river courses on one section of upright abrupt slope, during the dry season in the upstream in this river course and downstream establish dam and retain, this section of river course carried out to ecological dredging, and is exposed to the sun;
(2) be parallel to riverbank direction, in two sides, river course, plant the emergent vegetation zone of low bar;
(3) in bottom, this section of river course, lay layer of gravel, lay altogether two-layerly, it is the gravel of 80 ~ 100mm that the layer of gravel that is positioned at lower floor is selected particle diameter, is highly 10 ~ 15cm, and it is the gravel of 15 ~ 25mm that the layer of gravel that is positioned at upper strata is selected particle diameter, is highly 15 ~ 20cm;
(4) above the layer of gravel of upper strata, perpendicular to the water surface, arrange packing layer, described packing layer is by artificial bio-membrane's filler and composite nano fiber media assemblage, and artificial bio-membrane's filler and composite nano fiber filler are alternately arranged perpendicular to the water surface; Artificial bio-membrane's filler adopts elastic filler or combined stuffing, and described elastic filler is hairbrush shape biologic packing material, and combined stuffing is plate-like and plant fiber combination type biological filler; Described composite nano fiber filler adopts nanometer titanic oxide composite photochemical catalyst material;
(5) remove the interception dam that this section of river course upstream and downstream built temporarily, in upstream, this section of river course, build rubber dam, to administering the water level in river course, regulate, the depth of water that makes to administer in river course is less than or equal to 30cm; Rubber dam can regulate water level in improvement section in the period when a river is at its normal level and dry season, in emptying in flood season, can not affect the flood carrying capacity in river.
2. shallow stream regenerated water water course in situ improvement method according to claim 1, is characterized in that the plant variety that emergent vegetation zone is selected is iris or calamus, and planting density is 3-5 clump/rice.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210430606.XA CN102966071B (en) | 2012-11-02 | 2012-11-02 | In-situ treatment method for shallow flow rejuvenated water riverway |
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| CN201210430606.XA CN102966071B (en) | 2012-11-02 | 2012-11-02 | In-situ treatment method for shallow flow rejuvenated water riverway |
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| CN102966071A CN102966071A (en) | 2013-03-13 |
| CN102966071B true CN102966071B (en) | 2014-07-16 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103466810B (en) * | 2013-09-30 | 2014-10-15 | 广东源盛生态环保科技有限公司 | Method for polluted river comprehensive treatment |
| CN103669281B (en) * | 2013-12-16 | 2015-06-10 | 重庆大学 | Method for assisting in fixed-point dredging of black and odorous watercourse through rubber dams |
| CN105084643B (en) * | 2015-07-15 | 2017-05-24 | 同济大学 | Water quality in-situ pre-treatment method in water source region |
| CN106517530B (en) * | 2016-12-29 | 2023-06-23 | 北京东方园林环境股份有限公司 | River channel system structure for water purification and ecological restoration |
| CN107640870B (en) * | 2017-09-30 | 2023-06-27 | 河南师范大学 | Integrated device with city river purification and landscape functions |
| CN116377959B (en) | 2023-06-05 | 2023-08-15 | 生态环境部南京环境科学研究所 | System and method for treating sandy soil landfill solid waste polluted river |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005256432A (en) * | 2004-03-11 | 2005-09-22 | Jfe Engineering Kk | Water using system for river basin |
| CN101575145B (en) * | 2009-06-09 | 2010-12-01 | 山东建筑大学 | Riverway water quality purification and ecosystem restoration adjustable wetland technology |
| CN202023172U (en) * | 2011-03-04 | 2011-11-02 | 深圳市立雅水务发展有限公司 | Integrated treatment system for improving river channel |
| CN202466535U (en) * | 2011-12-28 | 2012-10-03 | 山东大学 | Serial connection type rubber dam water quality purifying system for riverway capable of building dams in sections and blocking and storing water in cascaded mode |
| CN102633395B (en) * | 2012-04-18 | 2014-11-19 | 波鹰(厦门)科技有限公司 | Eutrophicated river water quality purifying method |
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