CN105648974A - In-situ desilting, oxygen aeration and landscape construction method of polluted riverway - Google Patents
In-situ desilting, oxygen aeration and landscape construction method of polluted riverway Download PDFInfo
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- CN105648974A CN105648974A CN201410720539.4A CN201410720539A CN105648974A CN 105648974 A CN105648974 A CN 105648974A CN 201410720539 A CN201410720539 A CN 201410720539A CN 105648974 A CN105648974 A CN 105648974A
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
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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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Abstract
The invention belongs to the technical field of water quality restoration in environment engineering and particularly relates to an in-situ desilting, oxygen aeration and landscape construction method of a polluted riverway. Polluted bottom mud at the bottom of the polluted riverway is removed, a river water flow guiding channel is formed; biological filler and an oxygen aeration device are laid on the bottom layer of the river water flow guiding channel; and the removed polluted bottom mud is accumulated on a naked river bed on one side of the polluted riverway or naked river beds on the two sides of the polluted riverway, and a high river bed or high river beds are formed. Water landscape is constructed on the high river bed/river beds. The method completely eliminates stink released by polluted water of a past riverway and naked black and odorous river beds, and water quality indexes are remarkably improved; and meanwhile the water landscape is constructed, and technical difficulty for riverway water quality restoration is substantially reduced.
Description
Technical field
The invention belongs to environmental engineering Water quality restoration technical field, specifically the original position desilting of a kind of polluted river channel, oxygenation and Scene construction method.
Technical background
Along with industry and socioeconomic high speed development, river water quality pollutes has become one of outstanding environmental problem of China. River is easy to be polluted by sanitary sewage, rainwater, agricultural runoff and trade effluent, causes water quality severe exacerbation, the death of black and odorous water and fish. In northern China, due to shortage of water resources, major part type river, Dou Weiyu source, river, so these rivers are also important tap water and the main source of irrigation water. But, due to a large amount of discharges of all kinds of pollution in basin, the main function in these rivers is also progressively progressively changed into blowdown by original retaining, flood discharge. Therefore, the stem reality of " have river all dirty, not dirty, do " has currently occurred in a lot of area. And, due to chronic pollution, not only river is black obviously smelly, and dry season exposed riverbed especially stench can't bear, the healthy of two sides, river course resident and living environment are constituted direct threat. Channel cleanout is one of effective ways of heavily river regulation always, but due to current China also quite limited for processing power and the technology of mud, so the mud that desilting cleans out is difficult to be effectively addressed so that desilting work be difficult to carry out. Simultaneously, owing to heavily contaminated river course is in city mostly, its both sides have defined and have lived in concentrated communities district, this also result in certain difficulty (machines for mud clearage cannot arrive, remove the temporary stacking of sludge pollution etc.) to littoral desilting engineering, making existing channel cleanout engineering cost higher (about 200 yuan/ton), desilting work difficulty of implementation is bigger. For this reason, it is badly in need of a kind of original position dredging technology of research and development, effectively improves the black smelly present situation in river course, build water landscape simultaneously, ensure the healthy of littoral resident and better people's living environment.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide the original position desilting of a kind of polluted river channel, oxygenation and Scene construction method.
In order to realize above-mentioned purpose, the present invention by the following technical solutions:
The original position desilting of a kind of polluted river channel, oxygenation and Scene construction method, remove the polluted bed mud bottom polluted river channel, form river water conservancy diversion groove, it is equipped with biologic packing material and oxygen-increasing device at described river water conservancy diversion groove bottom, the polluted bed mud of removing is piled up on the exposed riverbed of polluted river channel one or both sides, forms high-order riverbed.
Described high-order riverbed builds water landscape. Described water landscape be pile up at polluted bed mud formed smooth after high-order riverbed on plant all kinds of short aquatic or resistance to flood plant, planted aquatic or resistance to flood plant and all cover high-order riverbed, by the multiple color of plant or highly build view general layout, it is achieved water landscape.
Described biologic packing material adopts slag. Described slag be from coal firing boiler waste residue screening diameter be 5-15 centimetre irregular burnings refine block.
Described oxygen-increasing device comprises blower fan and the oxygen increasing tube with micropore, described blower fan is arranged on bank of river, the described oxygen increasing tube with micropore is layed in the river water conservancy diversion groove bottom polluted river channel, bottom micro-pore aeration oxygenation is carried out to the oxygen increasing tube of micropore by blower fan, the top layer of biologic packing material is made to form microbial film, it is achieved the purification of water quality. Micro-pore diameter on the described oxygen increasing tube with micropore is 0.02-0.08 millimeter, and micropore arranges density 800-1300/rice.
Described former river course cross flow water system directly imports in the river water conservancy diversion groove that original position desilting is formed, and forms main flow turbulent flow water system.
Advantage and the useful effect of the present invention be:
1. the present invention adopts original position desilting, bottom micro-pore oxygenation, high-order riverbed Scene construction technology that black smelly river water quality is carried out original position desilting and Water quality restoration simultaneously, not only effectively eliminates river course black smelly, and synchronously constructs water landscape.
2. the present invention efficiently solve because of in a short time cannot desilting and make polluted river channel Water quality restoration effect be difficult to embody technical problem, not only effectively save municipal expenditure, and also construct water landscape by desilting, make the living environment of littoral resident obtain effective improvement.
3. the polluted bed mud that the present invention removes directly is piled up on exposed riverbed, one or both sides, river course, it is not necessary to long-range transport.
4. the present invention completely eliminates stench and the exposed black smelly riverbed that conventional pollution of river water body distributes, and water-quality guideline is obviously improved, and constructs water landscape simultaneously, significantly reduces the technical difficulty that river water quality is repaired.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the present invention.
Wherein: 1 is bank of river, 2 is high-order riverbed, and 3 be biologic packing material, and 4 is main flow turbulent flow water system, and 5 is cross flow water system.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, the original position desilting of a kind of polluted river channel of the present invention, oxygenation and Scene construction method:
First, based on the situation such as geological hydrology in pollution administration river course, in conjunction with the exposed situation in the original riverbed of polluted river channel, desilting scope is set, removing the polluted bed mud of polluted river channel, form river water conservancy diversion groove, the degree of depth of river water conservancy diversion groove is determined according to riverbed width and river flow, the general degree of depth is about 1 meter, and width is about 4 meters. Described river water conservancy diversion groove can ensure that the original water body in river all collects and nature following current.
Secondly, after river water conservancy diversion groove is formed, the biologic packing material 3 of 20 centimetres directly it is about at this river even laying depth of water conservancy diversion channel bottom, such as blocky furnace slag, and above biologic packing material 3, directly lay oxygen-increasing device, such as the oxygenation pipeline with micropore, carry out bottom micro-pore oxygenation by the blower fan arranged on bank of river 1.
Finally, the polluted bed mud of removing is piled up on exposed riverbed, one or both sides, river course, forms high-order riverbed 2. The stacking polluted bed mud that desilting is formed is carried out appropriateness smooth, and high-order riverbed 2 after smooth planted aquatic or resistance to flood short pasture and water, as fluffy in: sedge, blue or green cogongrass, alkali etc., ensure that river course flood function also forms water landscape.Planted aquatic or resistance to flood plant and all cover high-order riverbed 2, by the different colours of plant or highly structure view general layout, it is achieved water landscape.
Described oxygen-increasing device comprises blower fan and the oxygen increasing tube with micropore, is 0.02-0.08 millimeter with the micropore mean pore size on the oxygen increasing tube of micropore, and micropore arranges density 800-1300/rice. Described blower fan is arranged on bank of river 1, the described oxygen increasing tube with micropore is layed in the river water conservancy diversion groove of bottom of river channel, carry out bottom micro-pore aeration oxygenation by blower fan to the oxygen increasing tube of micropore, make the top layer of biologic packing material 3 form microbial film, it is achieved the purification of water quality. Described whole river enters main flow water system to carry out bottom micro-pore aeration and forms microbial film, and namely former river course cross flow water system 5 directly imports in the river water conservancy diversion groove that original position desilting is formed, and forms main flow turbulent flow water system 4.
Embodiment one
River course, Laishan District, Yantai, Shandong is local municipal administration main sewerage river course, and it receives local municipal administration 50% all kinds of sewage, amounts to every day about 60,000 tons. Due to long-term pollution, the similar India ink of river water body also discharges unpleasant foul odour, and the life of river course nearby residents is caused direct interference. In addition, this river course is in anaerobic state for a long time, and water body constantly has bubble to overflow, and high temperature season is especially obvious. Carry out repeatedly washing away to river course although local government is contaminated solution problem, but produced little effect.
For river course, above-mentioned heavily contaminated strand, following measure is taked to carry out river water quality in-situ immobilization respectively:
1) the black smelly bed mud for many years that deposited in river course carries out original position cleaning and defines a treaty 3000 meters long, 4 meters wide, 1 meter dark river water conservancy diversion groove;
2) evenly lay, at above-mentioned river water conservancy diversion channel bottom, the blocky furnace slag that diameter is about 10 centimetres, then parallel laid four oxygenation pipelines (each other at a distance of about 1 meter) on slag, open the blower fan on bank of river 1 (every typhoon machine connects 400 meters of oxygenation pipelines) and carry out bottom micro-pore aeration;
3) will clear out and store up bed mud top and carry out appropriateness and smooth roll, then plant that alkali is fluffy waits local salt tolerant, water-fast vegetation;
4) regularly river surface is kept a public place clean, cleaning river surface floating matter;
5) daily administration and maintenance.
Operate through above-mentioned engineering and run about after one month, the clearance of chemical oxygen demand (COD) in river water body, ammonia nitrogen, suspended substance, sulfide, total dissolved phosphorus etc. all reaches about 60%, the foul odour that water body distributes is removed completely, pasture and water grow fine in high-order riverbed, river water body view embodies substantially, and Water quality restoration achieves satisfied effect.
Embodiment two
River course, Mouping District, Yantai, Shandong is one of local main landscape river course built, and both sides, river course have all been produced the green belt of park formula, have even also built hydrophilic lobby in part section. But, owing to both sides, river course constantly have all kinds of dirty water and waste water to enter so that river water body is black smelly can't bear, and therefore built up park formula ecological riverway is progressively evolved into the black smelly river course that resident shies away, and is also the major source that summer, mosquito grew simultaneously. The huge waste of the municipal resource that this river course not only causes, also directly affects the physical and mental health of basin resident, directly affects the quality of water environment of the nearshore waters of Yantai simultaneously.
For river course, above-mentioned heavily contaminated strand, take the every engineering measure in above-described embodiment one that this river course black and odorous water water quality has been carried out in-situ immobilization respectively.
After above-mentioned in-situ immobilization, the chemical oxygen demand value of river course waste water drops to 50mg/L by original about 200mg/L, overwhelming majority water-quality guideline can reach ground Table V class water quality standard, the foul odour that water body distributes is removed completely, water transparency obviously increases, and Water quality restoration effect obtains the high evaluation of local resident.
The principle of work of the present invention is:
Whole rivers in former river course enter in main flow turbulent flow water system 4 and carry out bottom micro-pore aeration and form microbial film, and namely former river course cross flow river system 5 directly imports in the river water conservancy diversion groove that original position desilting is formed, and form main flow turbulent flow water system 4. Described river water conservancy diversion groove bottom is equipped with slag, arranges micro-pore oxygenation pipe, realize bottom micro-pore oxygenation by attached blower fan above described slag, and slag top layer can form microbial film, strengthens effects of purification quality.
Claims (8)
1. the original position desilting of a polluted river channel, oxygenation and Scene construction method, it is characterized in that: remove the polluted bed mud bottom polluted river channel, form river water conservancy diversion groove, it is equipped with biologic packing material (3) and oxygen-increasing device at described river water conservancy diversion groove bottom, the polluted bed mud of removing is piled up on the exposed riverbed of polluted river channel one or both sides, forms high-order riverbed (2).
2. by the original position desilting of polluted river channel according to claim 1, oxygenation and Scene construction method, it is characterised in that: described high-order riverbed (2) builds water landscape.
3. by the original position desilting of polluted river channel according to claim 2, oxygenation and Scene construction method, it is characterized in that: described water landscape be pile up at polluted bed mud formed smooth after the upper plantation in high-order riverbed (2) all kinds of short aquatic or resistance to flood plant, planted aquatic or resistance to flood plant and all cover high-order riverbed (2), by the multiple color of plant or highly build view general layout, it is achieved water landscape.
4. by the original position desilting of polluted river channel according to claim 1, oxygenation and Scene construction method, it is characterised in that: described biologic packing material (3) adopts slag.
5. by the original position desilting of polluted river channel according to claim 4, oxygenation and Scene construction method, it is characterised in that: to be the diameter of screening from coal firing boiler waste residue be described slag that irregular burnings of 5-15 centimetre refines block.
6. by the original position desilting of the polluted river channel described in claim 1 or 4, oxygenation and Scene construction method, it is characterized in that: described oxygen-increasing device comprises blower fan and the oxygen increasing tube with micropore, described blower fan is arranged on bank of river (1), the described oxygen increasing tube with micropore is layed in the river water conservancy diversion groove bottom polluted river channel, bottom micro-pore aeration oxygenation is carried out to the oxygen increasing tube of micropore by blower fan, the top layer of biologic packing material (3) is made to form microbial film, it is achieved the purification of water quality.
7. by the original position desilting of polluted river channel according to claim 6, oxygenation and Scene construction method, it is characterised in that: the micro-pore diameter on the described oxygen increasing tube with micropore is 0.02-0.08 millimeter, and micropore arranges density 800-1300/rice.
8. by the original position desilting of polluted river channel according to claim 1, oxygenation and Scene construction method, it is characterized in that: described former river course cross flow water system (5) directly imports in the river water conservancy diversion groove that original position desilting is formed, and forms main flow turbulent flow water system (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410720539.4A CN105648974B (en) | 2014-12-02 | 2014-12-02 | Desilting in situ, oxygenation and the Scene construction method of a kind of polluted river channel |
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| CN201410720539.4A CN105648974B (en) | 2014-12-02 | 2014-12-02 | Desilting in situ, oxygenation and the Scene construction method of a kind of polluted river channel |
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| CN105648974B CN105648974B (en) | 2017-12-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487946A (en) * | 2017-09-21 | 2017-12-19 | 中交生态环保投资有限公司 | A kind of deflector type black and odorous water in-situ treatment system and processing method |
| CN109264830A (en) * | 2018-09-28 | 2019-01-25 | 常州大学 | A kind of administering method of malodorous black water |
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| CN201406359Y (en) * | 2009-04-07 | 2010-02-17 | 上海智泓环保工程有限公司 | Treatment device for black odor river |
| CN201746387U (en) * | 2010-06-09 | 2011-02-16 | 江苏裕隆环保有限公司 | Polluted water body in-situ repairing and purifying device |
| CN103359886A (en) * | 2013-07-29 | 2013-10-23 | 南京大学 | Comprehensive technology for ecological restoration of low-pollution river water |
| CN103669282A (en) * | 2013-12-26 | 2014-03-26 | 东北师范大学 | Method for disposing river or lake bottom mud on site |
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2014
- 2014-12-02 CN CN201410720539.4A patent/CN105648974B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201010564Y (en) * | 2006-12-04 | 2008-01-23 | 天津创业环保股份有限公司 | Landscape water body renovating biological treatment device |
| CN101367585A (en) * | 2008-07-31 | 2009-02-18 | 环境保护部华南环境科学研究所 | Novel water course aeration device, mounting, using method and uses thereof |
| CN201406359Y (en) * | 2009-04-07 | 2010-02-17 | 上海智泓环保工程有限公司 | Treatment device for black odor river |
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| CN103359886A (en) * | 2013-07-29 | 2013-10-23 | 南京大学 | Comprehensive technology for ecological restoration of low-pollution river water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487946A (en) * | 2017-09-21 | 2017-12-19 | 中交生态环保投资有限公司 | A kind of deflector type black and odorous water in-situ treatment system and processing method |
| CN109264830A (en) * | 2018-09-28 | 2019-01-25 | 常州大学 | A kind of administering method of malodorous black water |
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| CN105648974B (en) | 2017-12-19 |
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