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Device and method for simulating influence of external environment change on occurrence of sulfur element in sediment

A technology for external environment and sediments, applied in teaching models, educational appliances, instruments, etc., can solve the problems of high investment, insufficient statistics, and excessive equipment, and achieves low investment, high safety, and simple experimental process. Effect

Pending Publication Date: 2020-11-06
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the researches on colloidal sulfur at home and abroad are less on the sulfur form, and the experiments on the transformation of sulfur form under the influence of the environment are also insufficient, resulting in insufficient statistics on the factors affecting different sulfur forms, and the existing simulation devices are too simple. Failure to simulate changes in different factors; some extraction devices have cumbersome steps, the device is too large, the experiment is inconvenient, and the investment is too high

Method used

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  • Device and method for simulating influence of external environment change on occurrence of sulfur element in sediment
  • Device and method for simulating influence of external environment change on occurrence of sulfur element in sediment
  • Device and method for simulating influence of external environment change on occurrence of sulfur element in sediment

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Embodiment 1

[0028] Such as figure 1 Shown is the simulation device schematic diagram of the present invention, and it comprises the container 13 that is used to hold sediment simulation layer, and sediment simulation layer is positioned at the bottom of container 13, and the bottom of sediment simulation layer is concrete 9, and the top is silt 10; Container 13 is provided with precipitation device 14, pH detector 5, gas concentration detector 6 (such as nitrogen, oxygen concentration detector), precipitation device 14 is positioned at the top of sediment simulation layer, and the outside of container 13 is provided with precipitation control device 3 and The air supply device 2, the precipitation device 14 are connected to the precipitation control device 3; the first conduit for transporting precipitation is provided between the precipitation control device 3 and the precipitation device 14, and the solution adder 1 is provided on the first conduit. The container wall is provided with a...

Embodiment 2

[0033] Utilize the simulation device in the embodiment 1 to simulate the impact of the external environment change on the deposit sulfur element occurrence, and its simulation method comprises the following steps:

[0034] Step 1, preparatory work;

[0035] The simulation experiment is carried out at the same time by using multiple simulation devices with the method of controlling variables. The lake sediment is evenly poured into the soil container. The total mass of the sediment is 900kg, and the particle size is 2-10μm. stage.

[0036] Step 2, carry out simulation test;

[0037] (1) Effect of different pH values ​​on sulfur forms

[0038] Select a group of devices for the simulation experiment, named A, B, C, and D respectively; open the drain valve 7, add a sufficient amount of 1M acetic acid to the solution adder 1, open the precipitation controller 3 of the A device, and adjust the solution dropper valve at the same time 1 Control the rate to 0.5L / min, so that the four ...

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Abstract

The invention discloses a device and a method for simulating influence of external environment change on occurrence of a sulfur element in a sediment. The device comprises an external environment simulation system, a lake water sediment system and a filtering, collecting and detecting system, the influence of oxygen content, pH value, organic matter and iron content adjustment on the sulfur form is combined, multi-factor common influence simulation is supported, and the sulfur release amount of silt at different depths in different environments can be researched; and the simulation process issimple, convenient and fast, high in safety and low in investment capital.

Description

technical field [0001] The invention relates to a sediment simulation device and a simulation method, in particular to a device and a simulation method for simulating the influence of external environment changes on the occurrence of sulfur in sediments. Background technique [0002] Sulfur is one of the essential elements for plant growth. Sulfur can enter the human body through the food chain, so sulfur will also have a certain impact on health. Inorganic sulfur can be divided into different forms during research, such as adsorbable sulfur, acid-volatile sulfur, pyrite sulfur, and elemental sulfur. [0003] As a wetland ecosystem, lakes have great research value on the release of sulfur from their internal sediments. At present, most of the researches on colloidal sulfur at home and abroad are less on the sulfur form, and the experiments on the transformation of sulfur form under the influence of the environment are also insufficient, resulting in insufficient statistics ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 茅昌平栗天宁宋政锦饶文波贾志敏
Owner HOHAI UNIV
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