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Method for promoting release of supersaturated total dissolved gas by using active carbon and experimental apparatus

A technology of total dissolved gas and activated carbon, applied in the field of supersaturation of dissolved gas in water conservancy projects, can solve problems such as inappropriate use of diversion devices, failure to comprehensively consider flood control, shipping, power generation, ecology, and sediment deposition in reservoir areas, etc., to achieve easy Purchase, low cost, good release effect

Active Publication Date: 2015-10-28
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the usual means to solve the supersaturated TDG problem caused by drainage is to improve the design of drainage structures and optimize the operation mode of drainage, but there are many restrictive factors: (1) Most of our country has built high dams, Due to both technical and economic constraints, it is not suitable to use diversion devices; (2) The dynamic scheduling research is mainly based on the goal of reducing water abandonment and slowing down the downstream gas supersaturation, without comprehensive consideration of flood control, shipping, power generation, ecology and reservoir areas (3) Most of the existing research focuses on reducing the formation of supersaturated TDG, but there is no report on how to accelerate the release of supersaturated TDG in the downstream channel.

Method used

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  • Method for promoting release of supersaturated total dissolved gas by using active carbon and experimental apparatus
  • Method for promoting release of supersaturated total dissolved gas by using active carbon and experimental apparatus
  • Method for promoting release of supersaturated total dissolved gas by using active carbon and experimental apparatus

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Experimental program
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Effect test

Embodiment 1

[0042] The standing test of this embodiment is carried out in 4 working conditions in a constant temperature and humidity test room of 4.0m (L) × 3.0m (W) × 2.0m (H).

[0043] The test activated carbon 4 used is the activated carbon produced by Shanghai Xinlian Chemical Factory.

[0044] The temperature recorder 3 is a model L93-22 temperature recorder jointly developed by the State Key Laboratory of Hydraulics and Mountain River Development and Protection of Sichuan University and Hangzhou Luge Technology Co., Ltd.

[0045] The TGP (Total Dissolved Gas Pressure) measuring instrument adopts the TGP measuring instrument produced by Point Four Company.

[0046] Both the first test container 1 and the second test container 2 adopt a plexiglass box of 25cm×25cm×40cm.

[0047] Described first water bath container 5 adopts plastic barrel, and its bottom diameter is 90cm, and caliber is 95cm, and height is 95cm.

[0048] The specific operation steps of the static test are as follow...

Embodiment 2

[0065] In the stirring-induced turbulence test of this embodiment, 20 groups of experiments were carried out on 20 working conditions in a constant temperature and humidity laboratory of 4.0m(L)×3.0m(W)×2.0m(H).

[0066] The temperature recorder 3 , the TGP measuring instrument 8 and the third test container 7 used are the same as those in Example 1.

[0067] The activated carbon 4 used in the test was dry activated carbon without any treatment, which was purchased from Shanghai Xinlian Chemical Factory.

[0068] The specific operation steps of stirring-induced turbulence test are as follows:

[0069] 1. According to figure 2 The connection device arranges the instruments and equipment;

[0070] 2. Place the probe of the temperature recorder 3 at 0.25m along the water depth direction of the third test vessel 7, arrange the blades of the agitator 6 at a distance of 0.05m from the bottom of the third test vessel 7, so that the blades face the TGP measuring instrument 8 the c...

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Abstract

The present invention relates to a method for promoting release of supersaturated total dissolved gas by using active carbon and experimental apparatus, and belongs to the technical field of dissolved gas supersaturation in water conservancy project. According to the method, standing test and stirring-induced turbulence test are carried out in a test chamber with constant temperature and humidity, and the active carbon is added to a test container to achieve release of supersaturated total dissolved gas and good release effect. The method has important theoretical value and engineering significance in research on relief of the adverse effects of total dissolved gas supersaturation on fish in sluicing of water conservancy project and aquaculture, and provides basic data and theoretical basis for the study on mitigation measures for the impact of total dissolved gas supersaturation. The experimental apparatus for realization of the method has simple structure; and the method uses few apparatuses and is low in cost.

Description

technical field [0001] The invention relates to a supersaturated total dissolved gas technology, in particular to a new method and an experimental device for promoting the release of supersaturated total dissolved gas in a water body by using activated carbon, and belongs to the technical field of water conservancy engineering dissolved gas supersaturation. Background technique [0002] Many large-scale water conservancy projects in my country need to discharge water to downstream rivers through spillways, flood discharge tunnels and other discharge structures according to their water volume scheduling needs. When the high dam discharges water, the water flow entrains a large amount of air into the water body, causing the total dissolved gas (TDG) of the downstream channel to be supersaturated. A large number of research data show that the supersaturated TDG produced by the discharge is released slowly during the process of transporting to the downstream channel, which may d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/18
Inventor 冯镜洁牛晋兰李然李克锋李嘉梁瑞峰欧洋铭
Owner SICHUAN UNIV