CN103771587A - Novel method for combined usage of Corbicula fluminea and Limnodrilus hoffmeisteri in inhibition of release of endogenous phosphorus in closed water body - Google Patents
Novel method for combined usage of Corbicula fluminea and Limnodrilus hoffmeisteri in inhibition of release of endogenous phosphorus in closed water body Download PDFInfo
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- CN103771587A CN103771587A CN201210405998.4A CN201210405998A CN103771587A CN 103771587 A CN103771587 A CN 103771587A CN 201210405998 A CN201210405998 A CN 201210405998A CN 103771587 A CN103771587 A CN 103771587A
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Abstract
The invention discloses a novel method for combined usage of Corbicula fluminea and Limnodrilus hoffmeisteri in inhibition of release of endogenous phosphorus in a closed water body. The method comprises the following steps: 1) adding Limnodrilus hoffmeisteri into sediment; 2) adding Corbicula fluminea in 2 to 3 days; and 3) detecting the concentration of phosphorus in water in each ten days until the concentration of phosphorus is stable. According to the invention, resources are saved, new chemical risks are prevented from being introduced into the water body, the purpose of control of release of endogenous phosphorus is realized, and the landscape function of the water body is prevented from being destroyed in the process of restoration of the water body.
Description
Technical field
The present invention relates to a kind of environmental improvement technology, what be specifically related to is the novel method that Corbicula fluminea and the coupling of water silk earthworm suppress dead front type water body internal phosphorus release.
Background technology
For the dead front type water body polluting for amputation external source, internal loading is the key link that maintains water nutrition salts contg.Cause water quality obviously not improve in a short time just because of endogenous release, although people have adopted the recovery technique of amputation external source, on long terms, if can not effectively control internal loading, it can continue circulation in long-term between bed mud, water, biology, thereby affects repairing effect.
For eutrophication water, people adopt chemical method, Physical and environment-protective desilting method etc. to suppress internal phosphorus release conventionally.Chemical method refers to by adding chemical agent, and sediments is oxidized or is fixed, and suppresses internal phosphorus release; Physical refers to and adopts physical material if untainted bed mud, clean sand, gravel, calcium bentonite, lime-ash, artificial zeolite, cement etc. are as covering material, bed mud and water physical property are separated.Environment-protective desilting reaches by removing Sediments the object that reduces internal phosphorus release.The method is still at the experimental stage, even in some water body application, water correction effect does not reach expection completely, and the input of dredging is also large.The sediment of removing is improper, can cause secondary pollution.Also there is employing planting aquatic plants, under rhizosphere effect effect, Endogenous Phosphorus is fixed or absorbed by waterplant.The composition of this method to bed mud, thickness, overlying water water quality etc. all have higher requirements, and its effect is also general.
From aforesaid method, can find out, at present, to normally physical method of the control of Endogenous Phosphorus, but the technology and the method that also do not adopt bottom-dwelling to control the release of Endogenous Phosphorus.And bottom-dwelling is in the activities such as predation, can carry out disturbance to bed mud, thereby introduce dissolved oxygen, increase the volume of aerobic environment in bed mud, and then improve redox potential, suppress internal phosphorus release.
Summary of the invention
The object of the invention is to overcome the above problem that prior art exists, provide Corbicula fluminea and the coupling of water silk earthworm to suppress the novel method of dead front type water body internal phosphorus release, after the method has solved resource of the prior art and drops into more greatly, usually introduces secondary pollution, water body reclamation activities and stop to water body, water quality is the problem such as deterioration rapidly.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
Corbicula fluminea and the coupling of water silk earthworm suppress the novel method of dead front type water body internal phosphorus release, comprise the following steps:
A step 1) earthworm that adds water in bed mud;
Step 2) after 2-3 days, add Corbicula fluminea;
Step 3), every ten days, detects phosphorus concentration in water, until stablize constant.
Further, described water silk earthworm dosage is set to 10000ind/m
2, described water silk earthworm length is selected 2cm; Corbicula fluminea dosage is set to 200ind/m
2, described Corbicula fluminea size is selected 3g/ind.
Principle of the present invention:
The activity disturbance bed muds such as the predation by Corbicula fluminea and water silk earthworm, introduce dissolved oxygen, increase the volume of aerobic environment in bed mud, improve redox potential, form layer of oxide layer in sediments, thereby reach the object that suppresses internal phosphorus release.Limnodrilus is in conveying person's functional group upwards, can be in bed mud excavated cavity downwards, and life is wherein, obtains dissolved oxygen by body swing, incorporating also of dissolved oxygen can be oxidized the bed mud of cave periphery simultaneously, thereby increases in the vertical the volume of aerobic environment.And Corbicula fluminea activity is on bed mud top layer, its active path does not have evident regularity, but it can disturbance sediments, increases contacting of sediments and overlying water, oxidation effect.In addition, the destruction of Corbicula fluminea disturbance to sediments, also can destroy the cave of water silk earthworm simultaneously, cause water silk earthworm to depths excavated cavity more, or abandon original cave, excavated cavity again, therefore, strengthen motion frequency and the scope of activity of water silk earthworm, thereby made the corresponding increase of the volume of aerobic environment in bed mud.Due to the infiltration of dissolved oxygen, can change kind and abundance, particularly aerobic microbiological and the facultative microbe of microbial population in bed mud.This is conducive to, to organic degraded and purification in bed mud, prevent the generation of anaerobic environment.Also make the metal ions such as ferrimanganic exist with oxidation state, the phosphorus in bed mud is combined, and forms the form that is difficult to release.By the transformation of bed mud anaerobic environment, the form of Endogenous Phosphorus can transform to difficulty release state phosphorus by easily discharging state phosphorus gradually, and then reaches the object that suppresses internal phosphorus release.
The invention has the beneficial effects as follows:
The present invention avoids introducing new chemical risk to water body; Reduce resource consumption; Reduce bed mud desilting frequency, correspondingly reduced bed mud subsequent processes expense.By introducing Corbicula fluminea and water silk earthworm, promote the recovery of microbial population in bed mud, accelerate the recovery of water body self-purification ability.
Embodiment
Below in conjunction with embodiment, describe the present invention in detail.
Corbicula fluminea and the coupling of water silk earthworm suppress the novel method of dead front type water body internal phosphorus release, comprise the following steps:
A step 1) earthworm that adds water in bed mud;
Step 2) after 2-3 days, add Corbicula fluminea;
Step 3), every ten days, detects phosphorus concentration in water, until stablize constant.
Further, described water silk earthworm dosage is set to 10000ind/m
2, described water silk earthworm length is selected 2cm; Corbicula fluminea dosage is set to 200ind/m
2, described Corbicula fluminea size is selected 3g/ind.
Embodiment 1 laboratory bed mud is repaired simulated experiment
Adopting the plastic box of 2 2*1*1 is experimental simulation device.At each bottom of device bed mud, thickness is 15cm, and bed mud is taken from river course, campus.Then add river, depth of water 70cm.Static cultivation 10 days, the nutritive salt exchange between bed mud and overlying water completes substantially.No. 1 device is as repairing use, and No. 2 devices in contrast.
The 11st day, in No. 1 device, add 20000 of the water silk earthworms of purchase, stature equalization, wall scroll length is at 2-3cm.After 3d, add 400 of Corbicula flumineas, stature equalization, single weight is at 2-4g.
Since the 15th day, the phosphorus concentration in the overlying water of 2 devices is monitored.And every 10 days, respectively the overlying water of 2 devices is extracted out, then adding the tap water through airing (dechlorination), object is to accelerate internal phosphorus release.
From the 15th day to 55 days, not too large difference of phosphorus concentration in 2 device overlying waters.But since the 60th day, add phosphorus concentration in No. 1 experimental installation of Corbicula fluminea and water silk earthworm and be starkly lower than device No. 2.And ammonia nitrogen, organic content in overlying water also install lower than No. 2.
Simulated experiment finished in the time of the 100th day.In this process No. 1 device overlying water in phosphorus concentration always lower than No. 2 experimental installations.After adopting siphonage to extract out overlying water, find that No. 1 device sediments is obvious tawny, mean thickness reaches 1cm.Although and No. 2 device sediments are also tawny, thickness only has 0.1cm.To deep layer substrate sludge sampling, section is found, due to the existence of water silk earthworm, in deep layer bed mud, the shared volume of filemot part is larger, and No. 2 device does not almost have, and is still black, with obvious stink.Microorganism detection discovery, microbe population, kind in No. 1 device bed mud are installed far above No. 2.In No. 1 device bed mud, organic content is 6.8%, lower than 10.6% of No. 2 devices.
Get respectively No. 1 device and No. 2 device bed muds and do anaerobism culture experiment (6 weeks), result shows, No. 1 device bed mud soluble phosphate burst size be only install for No. 2 43%.
Claims (2)
1. Corbicula fluminea and the coupling of water silk earthworm suppress the novel method of dead front type water body internal phosphorus release, it is characterized in that, comprise the following steps:
A step 1) earthworm that adds water in bed mud;
Step 2) after 2-3 days, add Corbicula fluminea;
Step 3), every ten days, detects phosphorus concentration in water, until stablize constant.
2. Corbicula fluminea according to claim 1 and the coupling of water silk earthworm suppress the novel method of dead front type water body internal phosphorus release, it is characterized in that: described water silk earthworm dosage is set to 10000ind/m
2, described water silk earthworm length is selected 2cm; Corbicula fluminea dosage is set to 200ind/m
2, described Corbicula fluminea size is selected 3g/ind.
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| CN201210405998.4A CN103771587B (en) | 2012-10-23 | 2012-10-23 | The novel method of Corbicula fluminea and water silk earthworm coupling Restraining seal type water body internal phosphorus release |
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| CN201210405998.4A CN103771587B (en) | 2012-10-23 | 2012-10-23 | The novel method of Corbicula fluminea and water silk earthworm coupling Restraining seal type water body internal phosphorus release |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036340A (en) * | 2015-05-14 | 2015-11-11 | 中国科学院南京地理与湖泊研究所 | Simulation method of bioturbation effect of corbicula fluminea controlling tubificidae |
| CN106045248A (en) * | 2016-07-14 | 2016-10-26 | 苏州科技大学 | Method for reinforcing and fixing endogenous phosphorus on eutrophic water body bottom mud |
| CN106242214A (en) * | 2016-08-22 | 2016-12-21 | 苏州科技大学 | A kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation |
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| CN101113051A (en) * | 2007-07-06 | 2008-01-30 | 哈尔滨工业大学 | Method for restoring landscape water body by organism reinforcement |
| US20080209968A1 (en) * | 2002-08-27 | 2008-09-04 | Nauveau Technology Investments Ltd. | Processes for Treatment of Wastewater, Separation, Deodorisation and Re-Use of Biosolids |
| US20090103983A1 (en) * | 2006-10-18 | 2009-04-23 | Upal Ghosh | Low-impact delivery system for in situ treatment of contaminated sediment |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080209968A1 (en) * | 2002-08-27 | 2008-09-04 | Nauveau Technology Investments Ltd. | Processes for Treatment of Wastewater, Separation, Deodorisation and Re-Use of Biosolids |
| US20090103983A1 (en) * | 2006-10-18 | 2009-04-23 | Upal Ghosh | Low-impact delivery system for in situ treatment of contaminated sediment |
| CN101113051A (en) * | 2007-07-06 | 2008-01-30 | 哈尔滨工业大学 | Method for restoring landscape water body by organism reinforcement |
Non-Patent Citations (2)
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| 张雷等: "水丝蚓( Tubificid worms )扰动对磷在湖泊沉积物-水界面迁移的影响", 《湖泊科学》 * |
| 张雷等: "河蚬（Corbicula fluminea）扰动对湖泊沉积物性质及磷迁移的影响", 《环境科学》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036340A (en) * | 2015-05-14 | 2015-11-11 | 中国科学院南京地理与湖泊研究所 | Simulation method of bioturbation effect of corbicula fluminea controlling tubificidae |
| CN105036340B (en) * | 2015-05-14 | 2017-08-15 | 中国科学院南京地理与湖泊研究所 | A kind of analogy method of the bioturbation effect of utilization Corbicula fluminea control water earthworm |
| CN106045248A (en) * | 2016-07-14 | 2016-10-26 | 苏州科技大学 | Method for reinforcing and fixing endogenous phosphorus on eutrophic water body bottom mud |
| CN106045248B (en) * | 2016-07-14 | 2019-02-01 | 苏州科技大学 | A method of strengthening fixed eutrophic water sedimentary Endogenous Phosphorus |
| CN106242214A (en) * | 2016-08-22 | 2016-12-21 | 苏州科技大学 | A kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation |
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| CN103771587B (en) | 2015-07-29 |
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