CN101700934A - Adjustable recovering method and device of submerged plant in polluted shallow lake - Google Patents

Adjustable recovering method and device of submerged plant in polluted shallow lake Download PDF

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Publication number
CN101700934A
CN101700934A CN200910229851A CN200910229851A CN101700934A CN 101700934 A CN101700934 A CN 101700934A CN 200910229851 A CN200910229851 A CN 200910229851A CN 200910229851 A CN200910229851 A CN 200910229851A CN 101700934 A CN101700934 A CN 101700934A
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China
Prior art keywords
submerged plant
water
planting body
growth
submerged
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CN200910229851A
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Chinese (zh)
Inventor
张志斌
于士淼
谭晓波
魏垒垒
孔敏
李艺
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Shandong Jianzhu University
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Shandong Jianzhu University
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Priority to CN200910229851A priority Critical patent/CN101700934A/en
Publication of CN101700934A publication Critical patent/CN101700934A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention discloses adjustable recovering method and device of a submerged plant in a polluted shallow lake. The method comprises the following steps of: fixing the submerged plant underwater for a certain depth capable of ensuring the illumination requirement for the health growth of the submerged plant when a water body is in the initial transparency; because the transparency of the water body covered on the submerged plant is gradually increased along with the growth of the submerged plant, adjusting a planting body of the submerged plant to move downwards to ensure that the submerged plant grows at the next water depth and the submerged plant can continuously grow in a downwards moving water layer; and repeating the operation steps so that the submerged plant is gradually moved downwards until the planting body is downwards moved to a water body sediment surface layer. The device comprises the planting body of the submerged plant and a pile foundation for fixing the planting body of the submerged plant. The invention ensures that the growth depth of the submerged plant in the water body is adjusted according to the illumination requirement for the growth of the submerged plant, and the submerged plant is gradually downwards moved to the water bottom, thereby not only treating the polluted water body, but also meeting the illumination requirement for the growth in the downwards moving process.

Description

Adjustable submerged plant in polluted shallow lake restoration methods and device
Technical field
(the submerged plant recovery technology of the depth of water≤3m) belongs to the ecological reestablishment field to the present invention relates to a kind of, nutrition enriched shallow lake that the contaminated pollution level of settling is heavier relatively poor at transparency.
Background technology
In recent years, both at home and abroad freshwater lake eutrophication trend increases the weight of gradually, some lakes, city particularly, and water transparency is relatively poor, produces and life brings inconvenience to people, and the smelly natural landscape that also has influence on of the blackout of part water body.Improvement work at polluted lake, laboratory scale in recent years research generally believes, compares with materialization improvement technology, and the submerged plant recovery technique is a kind of more satisfactory shallow lake Pollution abatement technology, not only can purifying water body, and can not cause secondary pollution.Submerged plant has good effects of purification quality, and in the good zone of submerged plant growth, water body in lake water quality is better.But recover in the engineering actual polluted lake water body submerged plant, remain between breadboard research and the practical engineering application, still rarely have the case history of success both at home and abroad in big gap.Because at the shallow waters of heavy contamination, water transparency is poor on the one hand for it, and on the other hand, pollutant load is higher in its settling, and physical behavior shows as the mud scum shape, is unfavorable for the submerged plant root growth." 95 ", Tenth Five-Year Plan Period, part scholar also once carried out the engineering demonstration that submerged plant recovers at shallow lakes such as Dian Chi, Taihu Lake, it makes enclosed waters with enclosing lattice usually in the demonstration project zone, add a large amount of coagulating agent earlier and increase water transparency, cover the hard coverture simultaneously on the settling top layer, on top plant planting submerged plant then.Although this way can be recovered submerged plant in local waters in a short time, there is obvious defects in this way, the one, because adding of a large amount of chemical agents can work the mischief to the safety of water quality unavoidably; The hard coverture on settling top layer has reduced storage capacity; The 2nd, expense is higher.And the area of this demonstration project is generally all smaller, encloses lattice in case withdraw, and its submerged plant is dead gradually easily again.
Summary of the invention
The present invention is directed to the problem that existing polluted water body submerged plant recovery technology exists, propose a kind of adjustable submerged plant in polluted shallow lake restoration methods that is easy to plant recovery, a kind of device of realizing this technology is provided simultaneously.
Adjustable submerged plant in polluted shallow lake restoration methods of the present invention is:
The submerged plant planting body that can move vertically is set in contaminated shallow lake waters, on the submerged plant planting body, cover bed course and the yellow sand that to plant planting submerged plant, and on yellow sand, insert the rational submerged plant of embedding density, planting body is fixed on certain depth under water, this degree of depth can ensure the illumination demand in the initial transparency cascading water plant health growth of water body, growth along with submerged plant, its overlying water improves gradually, transparency increases gradually, after treating that the upper water body is improved to a certain degree, regulating the submerged plant planting body moves down, submerged plant is grown at next depth of water place, this place's depth of water still is as the criterion with the illumination demand that can ensure the submerged plant healthy growth, makes submerged plant can continue good growth in the water layer that moves down, and repeats the aforesaid operations step, submerged plant is moved down gradually, when planting body moves down into the water body deposit top layer, remove the submerged plant planting body, make submerged plant be able to abundant recovery.
The device of realizing above-mentioned adjustable submerged plant in polluted shallow lake restoration methods adopts following solution:
The submerged plant recovery device comprises the submerged plant planting body and the fixing pile foundation of submerged plant planting body, the submerged plant planting body is made up of framework, purse seine and submerged plant plantation matrix, around the framework and bottom is provided with purse seine, place mat gravel blanket in framework, lay submerged plant plantation matrix on the gravel blanket, the submerged plant planting body is provided with sleeve pipe, is installed on the pile foundation by sleeve pipe.
Submerged plant is selected autochthonous flora usually for use, and plantation matrix adopts yellow sand.Autochthonous flora is cultivated in yellow sand by certain planting density, in the water body environment of opening around the submerged plant planting body is in.Fixedly the pile foundation of submerged plant planting body is selected the joist steel or the higher plastics tubing of intensity of stainless steel for use, and the submerged plant planting body relies on rope to be bundled on the pile foundation, and the concrete degree of depth can be regulated.
When using this device, according to the transparency of water body, 0.2 meter-0.5 meter under water of shallow lake internal fixing, this degree of depth can satisfy the submerged plant healthy growth with the submerged plant planting body.The overlying water on submerged plant planting body top improves gradually, and transparency increases gradually.About 1 month, overlying water DO>0.5mg/L when planting body top, COD<20mg/L, behind turbidity<15, can regulate the submerged plant culture and move down 0.3 meter-0.5 meter, this degree of depth makes submerged plant can obtain enough illumination, and the overlying water on submerged plant planting body top continues to continue to improve in this operating process, and transparency increases gradually.Overlying water DO>0.5mg/L when planting body top, COD<20mg/L behind turbidity<15, continues to move down the submerged plant planting body, and the water quality of following one deck improves, and transparency increases gradually.The above step of repeatable operation after culture moves down into the settling top layer, is removed the fixedly pile foundation of submerged plant planting body.In the process of recovering submerged plant, water quality also improves gradually.
The present invention makes the growth degree of depth of submerged plant in water body regulate according to the illumination demand of self growing, and is displaced downwardly to the bottom gradually, has both administered contaminated water body in folding process, has satisfied the illumination demand of self growth again.Compare with traditional polluted shallow lake materialization improvement technology, can recover purifying polluted water body, can not cause secondary pollution, and improve water ecological setting, improve water body self detergent power by submerged plant.
Description of drawings
Fig. 1 is the structural representation of the adjustable submerged plant in polluted shallow lake recovery device of the present invention.
Wherein: 1, pile foundation, 2, framework, 3, submerged plant, 4, purse seine, 5, sleeve pipe.
Embodiment
As shown in Figure 1, submerged plant recovery device of the present invention comprises the submerged plant planting body and the fixing pile foundation 1 of submerged plant planting body.Adopt the rigid transverse polyphone to connect between each submerged plant planting body.The submerged plant planting body is made up of framework 2, purse seine 4 and submerged plant plantation matrix, framework 2 can be built with bamboo raft, steel pipe or plastics tubing etc., preferably adopt material lighter or that certain buoyancy is arranged, its four angles are provided with sleeve pipe 5, are enclosed within on the pile foundation 1 by sleeve pipe 5.Pile foundation 1 is selected the joist steel or the higher plastics tubing of intensity of stainless steel for use.Around the framework 2 and bottom is provided with purse seine 4, and purse seine 4 adopts fine and closely woven gauze, and yellow sand can not be spilt.Place mat gravel blanket (not drawing among the figure) in framework 2 is laid submerged plant plantation matrix, i.e. yellow sand on the gravel blanket.On yellow sand, press certain density kind planting submerged plant 3.Move down framework 2 along pile foundation 1, can regulate the degree of depth of submerged plant planting body in water body.
Transparency according to water body in the polluted shallow lake waters is fixed on certain depth under water with the submerged plant planting body, and this degree of depth can ensure the illumination demand of submerged plant 3 healthy growths at first.In submerged plant 3 process of growth, its overlying water improves gradually, and its transparency increases gradually, the illumination demand of submerged plant growth in one deck water body under helping.After treating that the upper water body is improved to a certain degree, regulate the submerged plant planting body and move down certain distance along pile foundation 1, because the upper strata water transparency increases, submerged plant 3 also can continue to grow well in the water layer that moves down.Repeat the aforesaid operations step, when planting body moves down into the settling top layer by the time, planting body is removed, submerged plant 3 is able to abundant recovery.
Submerged plant can be selected perennial heavy this plant of pasture and water, and as black algae, eel grass, leaf of bamboo Herba potamogetonis distincti and hornwort etc., the habit of various submerged plants is as follows:
Black algae: move the method breeding to insert, how to carry out in the 4-8 month in every year.Like the competent environment of illumination, environment covers plant strain growth and is obstructed.Preferably accept 2-3 hour scattering daylight every day.Suitable growth temperature: 15-30 ℃.Its seedling is rapid, and it is very fast to be shaped, and its best is viewed and admired the period and can reach 3-5 month after planting seedlings.
Eel grass: based on the offshoot breeding, also can adopt seeding method to grow seedlings, can carry out in the 4-5 month.Preferably accept the scattering daylight of 2-4h every day.Suitable growth temperature: 16-28 ℃.The best is viewed and admired the period and can reach 3-5 month after planting seedlings.
Leaf of bamboo Herba potamogetonis distincti: this kind of plant is planted preferably for the heavy water of whole strain, likes the illumination abundance, suitable growth temperature: 18-28 ℃.Though it is this kind of plant is perennial, aging easily.In the ordinary course of things, it is viewed and admired and can reach more than 3 months every year after being shaped period, and as not upgrading, its continuous plantation should not be above 2 years.
Hornwort: plant height 30-80 centimetre, move the method breeding to insert, how to carry out in the annual 3-8 month, like the illumination abundance, suitable growth temperature: 18-28 ℃.The best time of viewing and admiring reaches 3-5 month after planting seedlings.
Can consider that carrying out submerged plant in annual March recovers to handle, every kind of plant adopts the modes of reproduction of oneself to plant.
According to the transparency of water body, 0.2 meter-0.5 meter under water of shallow lake internal fixing, this degree of depth can satisfy the submerged plant healthy growth with the submerged plant planting body.The overlying water on submerged plant planting body top improves gradually, and transparency increases gradually.About 1 month, overlying water DO>0.5mg/L when submerged plant planting body top, COD<20mg/L, behind turbidity<15, can regulate the submerged plant planting body and move down 0.3 meter-0.5 meter, this degree of depth makes submerged plant can obtain enough illumination, and the overlying water on submerged plant planting body top continues to continue to improve in this operating process, and transparency increases gradually.Overlying water DO>0.5mg/L when submerged plant planting body top, COD<20mg/L behind turbidity<15, continues to move down the submerged plant planting body, and the water quality of following one deck improves, and transparency increases gradually.The above step of repeatable operation after the submerged plant planting body moves down into the settling top layer, is removed the fixedly pile foundation 1 of submerged plant planting body, and the submerged plant recovery operation of contaminated area is finished.In the process of recovering submerged plant, water quality also improves gradually.

Claims (2)

1. adjustable submerged plant in polluted shallow lake restoration methods is characterized in that:
The submerged plant planting body that can move vertically is set in contaminated shallow lake waters, on the submerged plant planting body, cover bed course and the yellow sand that to plant planting submerged plant, and on yellow sand, insert the rational submerged plant of embedding density, planting body is fixed on certain depth under water, this degree of depth can ensure the illumination demand in the initial transparency cascading water plant health growth of water body, growth along with submerged plant, its overlying water improves gradually, transparency increases gradually, after treating that the upper water body is improved to a certain degree, regulating the submerged plant planting body moves down, submerged plant is grown at next depth of water place, this place's depth of water still is as the criterion with the illumination demand that can ensure the submerged plant healthy growth, makes submerged plant can continue good growth in the water layer that moves down, and repeats the aforesaid operations step, submerged plant is moved down gradually, when planting body moves down into the water body deposit top layer, remove the submerged plant planting body, make submerged plant be able to abundant recovery.
2. device of realizing the described adjustable submerged plant in polluted shallow lake restoration methods of claim 1, comprise the submerged plant planting body and the fixing pile foundation of submerged plant planting body, it is characterized in that: the submerged plant planting body is made up of framework, purse seine and submerged plant plantation matrix, around the framework and bottom is provided with purse seine, place mat gravel blanket in framework, lay submerged plant plantation matrix on the gravel blanket, the submerged plant planting body is provided with sleeve pipe, is installed on the pile foundation by sleeve pipe.
CN200910229851A 2009-11-17 2009-11-17 Adjustable recovering method and device of submerged plant in polluted shallow lake Pending CN101700934A (en)

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Application Number Priority Date Filing Date Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101830565A (en) * 2010-05-24 2010-09-15 河海大学 Device for three-dimensional coupling and purification of water quality by lifting plant sinker and floater
CN102060384A (en) * 2010-10-29 2011-05-18 华南农业大学 Underwater lawn capable of removing phosphorous and inhibiting algae and construction method thereof
WO2012174983A1 (en) * 2011-06-22 2012-12-27 上海太和水环境科技发展有限公司 Method for planting aquatic weeds by underwater suspension and suspended aquatic weed bed apparatus for recovery of aquatic ecology
CN103663714A (en) * 2013-12-21 2014-03-26 上海海洋大学 Double-layer net bed for repairing water by planting submerged plants and water repairing method
CN104805802A (en) * 2015-04-02 2015-07-29 山东省分析测试中心 Permeable T-shaped river dam for planting artificial seaweeds and construction method thereof
CN105293707A (en) * 2015-11-05 2016-02-03 北京江石水环境生态修复技术院有限责任公司 Method for efficiently and fast constructing submerged vegetation
CN105758995A (en) * 2016-03-02 2016-07-13 中国环境科学研究院 Root box for submerged plant cultivation and rhizosphere microcell DGT test and use method thereof
CN107343452A (en) * 2017-08-24 2017-11-14 江苏仁乐生态治理工程有限公司 One kind is used for lake river course submerged plant planting device
CN111439850A (en) * 2020-05-20 2020-07-24 上海市园林设计研究总院有限公司 Ecological restoration method applied to flowing water body or deep water area

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101830565A (en) * 2010-05-24 2010-09-15 河海大学 Device for three-dimensional coupling and purification of water quality by lifting plant sinker and floater
CN101830565B (en) * 2010-05-24 2012-02-29 河海大学 Device for three-dimensional coupling and purification of water quality by lifting plant sinker and floater
CN102060384A (en) * 2010-10-29 2011-05-18 华南农业大学 Underwater lawn capable of removing phosphorous and inhibiting algae and construction method thereof
CN102060384B (en) * 2010-10-29 2012-08-22 华南农业大学 Underwater lawn capable of removing phosphorous and inhibiting algae and construction method thereof
WO2012174983A1 (en) * 2011-06-22 2012-12-27 上海太和水环境科技发展有限公司 Method for planting aquatic weeds by underwater suspension and suspended aquatic weed bed apparatus for recovery of aquatic ecology
CN103663714A (en) * 2013-12-21 2014-03-26 上海海洋大学 Double-layer net bed for repairing water by planting submerged plants and water repairing method
CN104805802A (en) * 2015-04-02 2015-07-29 山东省分析测试中心 Permeable T-shaped river dam for planting artificial seaweeds and construction method thereof
CN105293707A (en) * 2015-11-05 2016-02-03 北京江石水环境生态修复技术院有限责任公司 Method for efficiently and fast constructing submerged vegetation
CN105293707B (en) * 2015-11-05 2019-03-12 北京江石水环境生态修复技术院有限责任公司 A kind of method of efficient rapid build submerged vegetation
CN105758995A (en) * 2016-03-02 2016-07-13 中国环境科学研究院 Root box for submerged plant cultivation and rhizosphere microcell DGT test and use method thereof
CN107343452A (en) * 2017-08-24 2017-11-14 江苏仁乐生态治理工程有限公司 One kind is used for lake river course submerged plant planting device
CN111439850A (en) * 2020-05-20 2020-07-24 上海市园林设计研究总院有限公司 Ecological restoration method applied to flowing water body or deep water area

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Open date: 20100505