CN106242214A - A kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation - Google Patents
A kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation Download PDFInfo
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- CN106242214A CN106242214A CN201610692132.4A CN201610692132A CN106242214A CN 106242214 A CN106242214 A CN 106242214A CN 201610692132 A CN201610692132 A CN 201610692132A CN 106242214 A CN106242214 A CN 106242214A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- Y02W10/20—Sludge processing
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Abstract
The present invention provides a kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation, and the step of the method is as follows: add Huo Fu water silk earthworm in enclosed type Sediments to be repaired；After Huo Fu water silk earthworm pierces Sediments, using overlying water aeration 1h, overlying water dissolved oxygen concentration is maintained at 2 4mg/L, then stops aeration 5h, subsequently with aeration 1h, to stop aeration 5h be a cyclic aeration；Aeration reaches 0.5 0.7 μm ol/ (h g) to the total biological activity of Sediments‑1Time above, to overlying water aeration 2h, overlying water dissolved oxygen concentration is maintained at 3 5mg/L, then stops aeration 10h, subsequently with aeration 2h, to stop aeration 10h be a circulation；Aeration 20 30 days, i.e. completes to strengthen the process of enclosed type Sediments Endogenous Phosphorus form transformation.The method of the present invention can provide method for efficiently controlling internal phosphorus release.
Description
Technical field
The invention belongs to technical field of environmental management, particularly relate to a kind of strengthening enclosed type Sediments Endogenous Phosphorus form and turn
The method changed.
Background technology
Phosphorus is the restrictive factor of phytoplankton growth, particularly during algal grown, needs substantial amounts of phosphorus.Along with sewage cuts
The construction of stream facility and the enforcement of watershed management plan, increasing water body has amputated the input of external source phosphorus, such as point
Source (sanitary sewage or industrial wastewater), source, face (agricultural run-off and rainfall runoff), river input etc., therefore, algae in water body
Class is to raised growth, and needed for it, the source of a large amount of phosphorus is endogenous, and this is mainly based on bed mud.Therefore, current study hotspot
For the most effectively controlling the release of Endogenous Phosphorus, especially for enclosed type water body, the release of Endogenous Phosphorus overlying water especially main
Phosphorus source.
The control method of internal phosphorus release mainly has cladding process and Sediment Dredging.Cladding process is to use special material by water body
Completely cutting off with bed mud physical property, its suppression internal phosphorus release principle mainly has 2 points: one is to be completely cut off by physical property, reduces Endogenous Phosphorus
Probability to overlying water conveying；Two is by special material, the Endogenous Phosphorus of release to be caught and adsorbed, it is to avoid it is upwards
Cover water release.Sediment Dredging is then directly to be removed by Sediments.In actual applications, both cut both ways, in varying environment
Under, both of which is useful.
Although both approaches has all had a relatively broad application, but the shortcoming cannot avoided because of it, people are still to it
Denounced, and its application also in that available additive method very little.The shortcoming of cladding process essentially consists in: be easily caused the end
Mud internal anaerobic state aggravation, anaerobism is then to cause the central factor of internal phosphorus release.This makes cladding process the most usual
Effectively, but can lose efficacy rapidly or cause Endogenous Phosphorus burst to discharge subsequently.If employing porosity is big, the material of good water permeability
Material, although can ensure that the infiltration of dissolved oxygen and avoiding anaerobism, but owing to the deposition of float can cause its hole gradually to be filled
Fill out and affect the infiltration of dissolved oxygen.The shortcoming of Sediment Dredging is: have been proposed for environmental dredging about Sediment Dredging at present
Concept has also been applied, and the most only removes the upper strata bed mud rich in phosphorus, and does not destroy remaining bed mud structure and environment.This is at laboratory
In be easily achieved, but be difficult to hold in practical operation, it addition, remove after bed mud, also destroy the life of original bed mud simultaneously
State environment, not only have impact on the growth of microorganism in bed mud, also have impact on the growing environment of water plant simultaneously.
It practice, research has been found that not every Endogenous Phosphorus all can effectively discharge, with its existing forms and microenvironment
There are close ties in condition, microbial activity and state.If can promote that easily discharging state phosphorus converts difficult release state phosphorus, the most not
Only can realize the short-term control to internal phosphorus release, it is also possible to promote its permanent burying.This depends primarily in bed mud micro-
The control of environmental condition, although the most artificial bed mud microenvironment that accurately controls the most still is had any problem, but has been carried out in the lab
This control, simultaneously facilitates Endogenous Phosphorus and is converted to difficulty release state phosphorus by easily discharging state phosphorus, strengthen it and permanent bury.Therefore, base
In the concertedness of Endogenous Phosphorus form transformation Yu microenvironment condition, the present invention arises at the historic moment.
Summary of the invention
Solve the technical problem that: the shortcoming that Endogenous Phosphorus form transformation cannot be accelerated for existing Endogenous Phosphorus control method,
The present invention provides a kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation, and the method can be inside Sediments
Gradually form regular aerobic-anaerobic alternating state, easily release state phosphorus under this state, can be induced to turn to difficulty release state phosphorus
Change, thus provide method for efficiently controlling internal phosphorus release.
Technical scheme: a kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation, the step of the method is as follows:
The first step: adding Huo Fu water silk earthworm in enclosed type Sediments to be repaired, wherein dosage is 10000ind/m2,
The Huo Fu water a length of 1-2cm of silk earthworm；
Second step: after Huo Fu water silk earthworm pierces Sediments, uses the first aeration pattern to carry out aeration, and wherein the first exposes
Gas pattern is to overlying water aeration 1h, and overlying water dissolved oxygen concentration is maintained at 2-4mg/L, then stops aeration 5h, subsequently to expose
Gas 1h, stopping aeration 5h are a cyclic aeration；
3rd step: use the first aeration pattern to reach 0.5-0.7 μm ol/ (h g) to the total biological activity of Sediments-1Above
Time, use the second aeration pattern, wherein the second aeration pattern is to overlying water aeration 2h, and overlying water dissolved oxygen concentration keeps
At 3-5mg/L, then stop aeration 10h, subsequently with aeration 2h, stop aeration 10h be a circulation；
4th step: use the second aeration pattern aeration 20-30 days, i.e. completes to strengthen enclosed type Sediments Endogenous Phosphorus form and turns
The process changed.
The dosage adding Huo Fu water silk earthworm in the first step described above in Sediments to be repaired is 10000ind/
m2, the Huo Fu water a length of 2cm of silk earthworm.
The first aeration pattern of second step described above is to overlying water aeration 1h, and overlying water dissolved oxygen concentration keeps
At 3mg/L, then stop aeration 5h, subsequently with aeration 1h, stop aeration 5h be a cyclic aeration.
3rd step described above use the first aeration pattern to reach 0.6 μm ol/ to the total biological activity of Sediments
(h·g)-1Time above, use the second aeration pattern
In the 3rd step described above, the second aeration pattern is to overlying water aeration 2h, and overlying water dissolved oxygen concentration is maintained at
4mg/L, then stop aeration 10h, subsequently with aeration 2h, stop aeration 10h be a circulation；
4th step described above uses the second aeration pattern aeration 20 days.
Beneficial effect: a kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation that the present invention provides, has
Following beneficial effect:
1. the method for the present invention utilizes physiological habit and the predation feature of Huo Fu water silk earthworm, is changed with Interstitial Water by overlying water, from
And strengthen dissolved oxygen depth of penetration, thus around Huo Fu water silk earthworm cave, form aerobic region, additionally, exposed by intermittence
Gas, it is ensured that overlying content of oxygen dissolved in water, but, when water silk earthworm inertia, then micro-due to its Repiration and neighboring area
Biological Repiration and form anaerobic state, accelerate the formation of anaerobic state, therefore, the end of at simultaneously also by stopping aeration
Gradually form regular aerobic-anaerobic alternating state inside mud, and exactly can induce under this state easily release state phosphorus to
Difficult release state phosphorus converts, thus provides method for efficiently controlling internal phosphorus release；
2., compared with conventional restorative procedure, the method is avoided introducing new physics and chemical risk to water body, will not be raw to water body
State system produces impact, reduces resource consumption, and simultaneously by promoting the recovery of microbial population in Sediments, strengthening is to water body
Organic degraded in bed mud and avoid the formation of lasting anaerobic state；
3. the method for the present invention is suitable for having controlled the enclosed type water body that external source is polluted, and is not affecting or is destroying water landscape
In the case of function, it is achieved water remediation.
Detailed description of the invention
The Sediments used in following example takes from the Sediments of dawn korneforos, maple school district, Suzhou University of Science and Technology river,
This section water body is serious rice-nutrient state, the content 0 ~ 0.58mg/L of soluble phosphate, Sediments total phosphorus in water body
Content 1239mg/kg, the content of organic matter 12.5%.
Embodiment 1
A kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation, the step of the method is as follows: put down by Sediments
Being layered in the experimental provision of numbered ES1, this experimental provision is cylindrical, and internal diameter is 13.5cm, height is 25cm, laying depth
For 10cm, adding the overlying water taking from Sediments sampled point, overlying water removes plankton, the depth of water with 400 eye mesh screens
10cm, static placement 14 days.After water sludge interface is stable, adding Huo Fu water silk earthworm in ES1, dosage is 10000ind/m2,
The Huo Fu water a length of 2cm of silk earthworm.After 0.5h, choose the water silk earthworm being also not drilled into bed mud with tweezers, and with fresh water silk earthworm more
Change, naked-eye observation, after all water silk earthworms pierce bed mud, use the first aeration pattern: aeration 1h, stop aeration 5h, subsequently
It is a cyclic aeration with aeration 1h, stopping aeration 5h.During aeration, overlying water dissolved oxygen concentration is maintained at 3 ± 0.2mg/L.
Using the 11st day after the first aeration pattern aeration, in detection ES1, the total microbial activity in Sediments is
0.65μmol/(h·g)-1, subsequently into the second aeration pattern aeration, it is one follows with aeration 2h, stopping aeration 10h subsequently
Ring aeration, during aeration, overlying water dissolved oxygen concentration is maintained at 4 ± 0.2mg/L.
Use the second aeration pattern aeration after 20 days, detect bed mud microenvironment condition by Unisense microelectrode system,
Gather 0-2cm, 2-4cm bed mud and analyze Endogenous Phosphorus form.Now, in ES1, dissolved oxygen length of penetration is 12.5mm, and total oxygen is handed over
Throw-over rate is 2130 μm ol/ (m2·h)-1, in bed mud, total microbial activity is 0.78 μm ol/ (h g)-1, i.e. complete strengthening and close
The process of type Sediments Endogenous Phosphorus form transformation.
Comparative example 1
Comparative example 1 is carried out with the test of embodiment 1 simultaneously, and step is as follows:
Being laid in by Sediments in the experimental provision of numbered ES2, this experimental provision is cylindrical, and internal diameter is 13.5cm, height
Degree is 25cm, and laying depth is 10cm, adds the overlying water taking from Sediments sampled point, and overlying water goes with 400 eye mesh screens
Except plankton, depth of water 10cm, static placement 14 days.ES2 is added without water silk earthworm, the most not aeration.
After 11 days, in detection ES2 Sediments, total microbial activity is 0.36 μm ol/ (h g)-1, after 20 days, use
Unisense microelectrode system detection bed mud microenvironment condition, gathers 0-2cm, 2-4cm bed mud and analyzes Endogenous Phosphorus form.Now,
Dissolved oxygen length of penetration is 2.1mm, and total oxygen exchange speed is 1050 μm ol/ (m2·h)-1, in bed mud, total microbial activity is
0.39μmol/(h·g)-1。
Analyzing different shape phosphorus content in ES1, ES2 bed mud, data show, in ES1 bed mud, ferrum aluminum bound phosphorus content is bright
Aobvious increase, before 435.48 ± 44.67mg/kg(tests) increase to 878.21 ± 64.32mg/kg(experiment after), but can be biological
The ferrum aluminum bound phosphorus content utilized substantially reduces, before 131.33 ± 16.95mg/kg(tests) it is down to 87.69 ± 5.23mg/
Kg(experiment after), its account for ferrum aluminum bound phosphorus be respectively 30.15%(experiment before) and 9.99%(test after).And ferrum in ES2 bed mud
Aluminum bound phosphorus slightly raises, before 435.48 ± 44.67mg/kg(tests) increase to 533.13 ± 39.71mg/kg(experiment
Afterwards), but ferrum aluminum bound phosphorus content that can be bioavailable substantially reduces, before 131.33 ± 16.95mg/kg(tests) increase to
202.54 ± 25.19mg/kg(experiment after), its account for ferrum aluminum bound phosphorus be respectively 30.15%(experiment before) and 37.99%(test
Afterwards).In contrast ES1 and ES2, the biological effectiveness of ferrum aluminum bound phosphorus understands, and in ES1, ferrum aluminum bound phosphorus can be by biological profit
By property significantly lower than ES2.For ES1, calcium bound phosphorus is increased slightly, and in ES2, calcium bound phosphorus keeps not the most substantially
Become.
Additionally, iron oxides content has had significant change in ES1, ES2, become from the 8.92mg/g of original state respectively
12.17mg/g、9.05 mg/g。
Illustrated by the change of Endogenous Phosphorus form and the change of iron oxides content, use water silk earthworm to expand in bed mud good
Oxygen region, and form aerobic-anaerobic alternating state regularly, may advantageously facilitate Endogenous Phosphorus form transformation, particularly Endogenous Phosphorus
Can bioavailable property.
Above the embodiment of the present invention is described in detail, for one of ordinary skill in the art, according to the present invention
The thought of embodiment, the most all will change, and in sum, this specification content is not
It is interpreted as limitation of the present invention.
Claims (6)
1. the method strengthening enclosed type Sediments Endogenous Phosphorus form transformation, it is characterised in that the step of the method is as follows:
The first step: adding Huo Fu water silk earthworm in enclosed type Sediments to be repaired, wherein dosage is 10000ind/m2, suddenly
The just a length of 1-2cm of water silk earthworm；
Second step: after Huo Fu water silk earthworm pierces Sediments, uses the first aeration pattern to carry out aeration, and wherein the first exposes
Gas pattern is to overlying water aeration 1h, and overlying water dissolved oxygen concentration is maintained at 2-4mg/L, then stops aeration 5h, subsequently to expose
Gas 1h, stopping aeration 5h are a cyclic aeration；
3rd step: use the first aeration pattern to reach 0.5-0.7 μm ol/ (h g) to the total biological activity of Sediments-1Above
Time, use the second aeration pattern, wherein the second aeration pattern is to overlying water aeration 2h, and overlying water dissolved oxygen concentration keeps
At 3-5mg/L, then stop aeration 10h, subsequently with aeration 2h, stop aeration 10h be a circulation；
4th step: use the second aeration pattern aeration 20-30 days, i.e. completes to strengthen enclosed type Sediments Endogenous Phosphorus form and turns
The process changed.
A kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation the most according to claim 1, its feature exists
In: the dosage adding Huo Fu water silk earthworm in the described first step in Sediments to be repaired is 10000ind/m2, Huo Fu water silk
The a length of 2cm of earthworm.
A kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation the most according to claim 1, its feature exists
In: the first aeration pattern of described second step is to overlying water aeration 1h, and overlying water dissolved oxygen concentration is maintained at 3mg/L, so
Rear stopping aeration 5h, subsequently with aeration 1h, stop aeration 5h be a cyclic aeration.
A kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation the most according to claim 1, its feature exists
In: described 3rd step use the first aeration pattern to reach 0.6 μm ol/ (h g) to the total biological activity of Sediments-1Above
Time, use the second aeration pattern.
A kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation the most according to claim 1, its feature exists
In: in described 3rd step, the second aeration pattern is to overlying water aeration 2h, and overlying water dissolved oxygen concentration is maintained at 4mg/L, so
Rear stopping aeration 10h, subsequently with aeration 2h, stop aeration 10h be a circulation.
A kind of method strengthening enclosed type Sediments Endogenous Phosphorus form transformation the most according to claim 1, its feature exists
In: described 4th step uses the second aeration pattern aeration 20 days.
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| CN201610692132.4A CN106242214B (en) | 2016-08-22 | 2016-08-22 | A method of strengthening enclosed type Sediments Endogenous Phosphorus Forms Transformation |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279324A (en) * | 2004-03-26 | 2005-10-13 | Chugoku Electric Power Co Inc:The | Method for improving mud quality and water quality of tide-sensitive river |
| CN101544457A (en) * | 2009-04-30 | 2009-09-30 | 哈尔滨工业大学 | Method for improving sludge predation effect of limnodrilus hoffmeisteri |
| CN102874976A (en) * | 2012-08-20 | 2013-01-16 | 南通大学 | Purifying method for black and odorous water and sediment nutrient salt |
| CN103771587A (en) * | 2012-10-23 | 2014-05-07 | 苏州科技学院 | Novel method for combined usage of Corbicula fluminea and Limnodrilus hoffmeisteri in inhibition of release of endogenous phosphorus in closed water body |
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2016
- 2016-08-22 CN CN201610692132.4A patent/CN106242214B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279324A (en) * | 2004-03-26 | 2005-10-13 | Chugoku Electric Power Co Inc:The | Method for improving mud quality and water quality of tide-sensitive river |
| CN101544457A (en) * | 2009-04-30 | 2009-09-30 | 哈尔滨工业大学 | Method for improving sludge predation effect of limnodrilus hoffmeisteri |
| CN102874976A (en) * | 2012-08-20 | 2013-01-16 | 南通大学 | Purifying method for black and odorous water and sediment nutrient salt |
| CN103771587A (en) * | 2012-10-23 | 2014-05-07 | 苏州科技学院 | Novel method for combined usage of Corbicula fluminea and Limnodrilus hoffmeisteri in inhibition of release of endogenous phosphorus in closed water body |
Non-Patent Citations (1)
| Title |
|---|
| 吴方同等: "水丝蚓生物扰动对沉积物磷释放的影响", 《环境工程学报》 * |
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