River sediment resuspension device and using method thereof

A technology for river sediment and resuspension, which is applied in chemical instruments and methods, water/sludge/sewage treatment, water aeration, etc. It can solve the complex study of sediment resuspension process and the uneven distribution of centrifugal force flow rate along the radial direction. , complex structure and other problems, to achieve the effect of simple structure, low cost and convenient use

Inactive Publication Date: 2011-04-27
EAST CHINA NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the annular tank is composed of three parts, the upper pla

Method used

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  • River sediment resuspension device and using method thereof
  • River sediment resuspension device and using method thereof
  • River sediment resuspension device and using method thereof

Examples

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Embodiment 1

[0035] refer to figure 1 , figure 2 As shown, the river channel sediment resuspension device of the present invention is a single-axis runway type, including: 1 is an outer wall, 2 is a propeller, 3 is an adjustable support, 4 is an electrical control box, 5 is a water barrier, and 6 is a sampling valve. , 7 is black wallpaper. Among them, the outer wall 1 is composed of a diversion wall 1a and a side wall 1b. The diversion wall 1a is arranged at both ends of the axis of the device in an arc shape; the side wall 1b is arranged at both sides of the axis and is in a straight line shape. The annular shape of the outer wall 1 facilitates the directional intervention of the water flow. refer to figure 2 As shown, 9 is the overlying water layer, 10 is the floating mud layer, 11 is the black mud layer, and 12 is the fine sand layer. Referring to Fig. 3(A) and Fig. 3(B), 8 is a screw, which is set on the adjustable bracket 3.

[0036]Among them, the water flow propeller 2 is fi...

Embodiment 2

[0039] Other steps are the same as those in Example 1. Fix the water propeller 2 on the adjustable bracket 3, adjust the screw 8 on the adjustable bracket 3, make the submersion depth of the water propeller 2 be 0-1 cm, then open the electrical control box 4, and calculate the flow rate according to the Reynolds similarity criterion. Rotate the frequency converter to the set position, the frequency converter can usually adjust the specific range of 0-20 r / min, which can simulate the resuspension process of river sediment under the condition of wind and wave disturbance.

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PUM

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Abstract

The invention discloses a river sediment resuspension device, which has a uniaxial runway structure and comprises an outer wall, a water flow thruster, an adjustable bracket, an electric control box, a diaphragm wall, a sampling valve and black wallpaper. The invention also discloses a method for using the river sediment resuspension device. In the device, a fine sand layer, a black mud layer, a fluid mud layer and an upper confining bed are arranged in turn, and the water flow thruster is regulated through the adjustable bracket and a frequency conversion speed regulator. The device has a simple structure and small occupied area, is lower in cost, and can effectively reproduce the sediment resuspension process under the hydrodynamic condition.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a device for resuspension of river sediment under hydrodynamic action and a method for using the same. Background technique [0002] With the rapid development of the economy and the acceleration of urbanization, the problems of water quality pollution and ecological degradation of rivers in many cities in my country are very prominent. The content of oxygen-consuming organic pollutants and nitrogen and phosphorus nutrients remains high, and even seasonal and perennial Black and odorous water phenomenon. Taking Shanghai as an example, according to its 2009 Water Resources Bulletin, among the 719.8 kilometers of evaluated river courses in Shanghai, 28.7% of the length of the evaluated rivers is superior to Class III (including Class III), and 27.2% of the rivers are classified as Class IV. 8.5% of the river lengths are in Class V water, and 35.6% are river lengths...

Claims

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Application Information

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IPC IPC(8): C02F7/00
CPCY02W10/10
Inventor 何岩黄民生张一璠陈玉霞徐欢林剑波余定坤
Owner EAST CHINA NORMAL UNIV
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