CN103771567B - Novel method for inhibiting diffusion of hydrogen phosphide from sediment of enclosed water body to atmosphere - Google Patents
Novel method for inhibiting diffusion of hydrogen phosphide from sediment of enclosed water body to atmosphere Download PDFInfo
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- CN103771567B CN103771567B CN201210406108.1A CN201210406108A CN103771567B CN 103771567 B CN103771567 B CN 103771567B CN 201210406108 A CN201210406108 A CN 201210406108A CN 103771567 B CN103771567 B CN 103771567B
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Abstract
The invention discloses a novel method for inhibiting diffusion of hydrogen phosphide from the sediment of an enclosed water body to the atmosphere. According to the method, perturbation is carried out on surface sediment, wherein perturbation intensity is set to be 30 to 60 r/min, perturbation time is set to be 30 to 60 min, perturbation frequency is set to be once every 3 days, the thickness of the perturbed surface sediment is set to be 1 to 2 cm, and the height between disturbed sediment suspension and a water surface is set to be 0.2 to 0.3 m. According to the invention, no chemical agent is added or no biological risk is introduced into the water body, the landscape functions of the water body are not destroyed, and the water body is of an enclosed type.
Description
Technical field
the present invention relates to a kind of environmental improvement technology, be specifically related to be in a kind of Restraining seal type Sediments phosphuret-(t)ed hydrogen to the novel method of atmospheric diffusion.
Background technology
Phosphuret-(t)ed hydrogen is a kind of gas under anaerobic produced by anaerobion metabolism P contained compound.It can diffuse to water body from bed mud, and then diffuses into air.This gas belongs to greenhouse gases.
Usually, Sediments is divided into foster layer, oxygen layer of holding concurrently and anaerobic layer.In anaerobic layer, ubiquity anaerobion, carries out metabolism produce phosphuret-(t)ed hydrogen by utilizing P contained compound.Although the phosphuret-(t)ed hydrogen produced is present in anaerobic layer, it is under the effect of concentration gradient, gradually to sediments diffusion, and then can enter water body, air.Enter in the process of water body, air at it, if run into the decomposition that phosphuret-(t)ed hydrogen is accelerated in oxide compound, illumination etc., change into the P contained compound such as phosphoric acid salt, hypophosphite.Therefore, phosphuret-(t)ed hydrogen mainly concentrates on night to the diffusion of air.Another feature of phosphuret-(t)ed hydrogen is that it is difficult at water body with free state existence, but it is easy to adsorbed by particulate matter and exist with ADSORPTION STATE.
Up to now, people still mainly concentrate on the research aspect such as mutual transformation mechanism, diffusion mobility mechanism in phosphuret-(t)ed hydrogen mechanism of production and bed mud between Paddy soil, and relate to a few nothing of research of the proliferation of air for adopting which kind of method to control phosphuret-(t)ed hydrogen.Therefore, under anaerobic produce based on phosphuret-(t)ed hydrogen, be easy to exist with ADSORPTION STATE and meet the feature that oxide compound, illumination are easy to decomposition and inversion, devise the present invention.
Summary of the invention
The object of the invention is to the above problem overcoming prior art existence, to there is provided in a kind of Restraining seal type Sediments phosphuret-(t)ed hydrogen to the novel method of atmospheric diffusion, control phosphuret-(t)ed hydrogen to atmospheric diffusion, and do not introduce any chemical risk and biological risk to water body.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
In Restraining seal type Sediments, phosphuret-(t)ed hydrogen is to a novel method for atmospheric diffusion, and carry out micro-disturbance to sediments, strength of turbulence is set to 30-60 rev/min; Disturbance set of time is 30-60min, and forcing frequency is set to every 3 days 1 time, and the sediments thickness of disturbance is set to 1-2cm, and after disturbance, bed mud suspends apart from water surface elevation and is set to 0.2-0.3m.
Principle of the present invention:
After phosphuret-(t)ed hydrogen produces in anaerobic layer, can under concentration gradient effect, upwards spread, water body, air is entered by sediments, it is in diffusion process, once run into illumination, dissolved oxygen, oxide compound, molysite, manganese salt etc., can react at once, change into phosphoric acid salt, hypophosphite etc., thus no longer to atmospheric diffusion.But due to phosphuret-(t)ed hydrogen self, its amount existed with the form of free state is considerably less, and it mainly exists with ADSORPTION STATE form.Namely the present invention is these two features utilizing phosphuret-(t)ed hydrogen, micro-disturbance is carried out to sediments, impel and be gathered in phosphuret-(t)ed hydrogen in sediments and enter water body with the form of ADSORPTION STATE, under less strength of turbulence effect, the phosphuret-(t)ed hydrogen being adsorbed on particulate matter surface can fully contact with the dissolved oxygen in water body, oxide compound, molysite, manganese salt etc., thus be decomposed, after in water body, particulate matter content increases, the reflection of light in water body, the increase of refraction probability can be caused, the corresponding path of prolongation light in water body, thus the probability that increase phosphuret-(t)ed hydrogen contacts with illumination.By the way, promote that phosphuret-(t)ed hydrogen changes into phosphoric acid salt, hypophosphite.Under micro-disturbance effect, these phosphorus compounds can be adsorbed by particulate matter again, enter bed mud finally by natural subsidence mode.Based on generating rate and the rate of migration of phosphuret-(t)ed hydrogen, calculate the coalescence rate of phosphuret-(t)ed hydrogen in sediments, therefore, adopt the interval of disturbance in 3 days 1 time, the form of micro-disturbance, namely reach and control the object of phosphuret-(t)ed hydrogen to atmospheric diffusion, in turn save the energy, it also avoid frequent disturbance simultaneously and cause phosphoric acid salt to the diffusion of water body.
The invention has the beneficial effects as follows:
The present invention does not add any chemical agent to water body or introduces any biological risk, does not destroy the landscape function of water body, and dead front type water body.
Embodiment
Below in conjunction with embodiment, describe the present invention in detail.
In Restraining seal type Sediments, phosphuret-(t)ed hydrogen is to a novel method for atmospheric diffusion, and carry out micro-disturbance to sediments, strength of turbulence is set to 30-60 rev/min; Disturbance set of time is 30-60min, and forcing frequency is set to every 3 days 1 time, and the sediments thickness of disturbance is set to 1-2cm, and after disturbance, bed mud suspends apart from water surface elevation and is set to 0.2-0.3m.
Embodiment 1
With 2 bulges (d=11.5 cm, h=100cm) for experimental installation, from bayou, dead front type campus (N 31
zero18 ' 29.2 ", E 120
zero33 ' 28.1 ") gather undisturbed bed mud sample (25cm), directly load experimental installation, and add overlying water (25cm is dark); covered and enclosed; keep in Dark Place, cultivate 10d, record 2 experimental installation head space phosphine concentrations and be respectively 1457ng/m
3(No. 1 device) and 1761ng/m
3(No. 2 devices).From 11d, No. 1 device is still in static gas wave refrigerator state; No. 2 devices then adopt constant speed stirrer to carry out micro-disturbance (strength of turbulence 40 revs/min) to sediments (2cm), make sediments suspend (device is still in anaerobic state), disturbance every day 1 time, each disturbance 10min.From 12d to 15d, continuously ADSORPTION STATE phosphine concentration in head space phosphine concentration and sediments in monitoring 2 devices.Find, No. 1 device head space phosphine concentration still constantly raises, and the ADSORPTION STATE phosphine concentration in sediments is also in constantly accumulating; On the contrary, No. 2 device head space phosphine concentrations also slightly raise substantially, but its increasing degree is starkly lower than No. 1 device, and in sediments, ADSORPTION STATE phosphine concentration obviously reduces, and are starkly lower than the ADSORPTION STATE phosphine concentration of No. 1 device.
Claims (1)
1. in Restraining seal type Sediments, phosphuret-(t)ed hydrogen, to a novel method for atmospheric diffusion, is characterized in that: carry out micro-disturbance to sediments, strength of turbulence is set to 30-60 rev/min; Disturbance set of time is 30-60min, and forcing frequency is set to every 3 days 1 time, and the sediments thickness of disturbance is set to 1-2cm, and after disturbance, bed mud suspends apart from water surface elevation and is set to 0.2-0.3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210406108.1A CN103771567B (en) | 2012-10-23 | 2012-10-23 | Novel method for inhibiting diffusion of hydrogen phosphide from sediment of enclosed water body to atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210406108.1A CN103771567B (en) | 2012-10-23 | 2012-10-23 | Novel method for inhibiting diffusion of hydrogen phosphide from sediment of enclosed water body to atmosphere |
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| Publication Number | Publication Date |
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| CN103771567A CN103771567A (en) | 2014-05-07 |
| CN103771567B true CN103771567B (en) | 2015-07-01 |
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| CN201210406108.1A Expired - Fee Related CN103771567B (en) | 2012-10-23 | 2012-10-23 | Novel method for inhibiting diffusion of hydrogen phosphide from sediment of enclosed water body to atmosphere |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995010483A1 (en) * | 1993-10-12 | 1995-04-20 | Fmc Corporation | Treatment of aqueous phosphorus wastes |
| CN101805036A (en) * | 2010-04-15 | 2010-08-18 | 苏州科技学院 | In-situ purification method for phosphorus in urban surface water body |
-
2012
- 2012-10-23 CN CN201210406108.1A patent/CN103771567B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995010483A1 (en) * | 1993-10-12 | 1995-04-20 | Fmc Corporation | Treatment of aqueous phosphorus wastes |
| CN101805036A (en) * | 2010-04-15 | 2010-08-18 | 苏州科技学院 | In-situ purification method for phosphorus in urban surface water body |
Non-Patent Citations (1)
| Title |
|---|
| 海洋沉积物中磷化氢的分布、释放与转化研究;冯志华;《中国博士学位论文全文数据库基础科学辑》;20080915(第9期);摘要，正文第4页第2.4节，第20页第2节，第31-33页第1节，第45-46页第3.2.4节 * |
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| CN103771567A (en) | 2014-05-07 |
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Granted publication date: 20150701 Termination date: 20181023 |