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Vertical current hydraulic-drop aerating device

A technology of falling water aeration and vertical flow, which is applied in water aeration, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of limited contact area between water column and air and insignificant change of liquid flow state, etc. problems, to achieve the effect of simple structure, save space, and improve the removal rate of ammonia nitrogen and total nitrogen

Inactive Publication Date: 2011-11-23
BEIJING WATER SCI & TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the above-mentioned device is that the change of the liquid flow state is not significant, and the contact area between the water column formed by the falling water body and the air is limited, and still needs to be improved.

Method used

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  • Vertical current hydraulic-drop aerating device
  • Vertical current hydraulic-drop aerating device
  • Vertical current hydraulic-drop aerating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] figure 1 Shown is a schematic structural diagram of a preferred embodiment of the present invention, the device includes a water inlet pipe 1, a water distributor 2, a plurality of falling water reoxygenation tanks 3, a water collection tank 5, a water outlet pipe 6 and a bracket 7.

[0022] One end of the water inlet pipe 1 is connected to an anaerobic water source with low dissolved oxygen concentration or unsaturated, and the other end is connected to the water distributor 2 . The water distributor 2 adopts a perforated flower tube, which is located on the top of the vertical flow drop water aeration device and is fixed on the support 7 .

[0023] Each drop water reoxygenation tank 3 is placed under the water distributor 2 , placed overlappingly in the vertical direction, and fixed on the bracket 7 . In order to increase the number of falling water aeration stages, the height of the reoxygenation tank 3 is 5-10cm. Such as figure 2 and image 3 As shown, the bott...

Embodiment 2

[0031] Using the device described in Example 1, a drop aeration test was carried out on the effluent from the anaerobic filter. A total of 10 levels of reoxygenation tanks are designed, among which, the height of the reoxygenation tank is 7cm, the distance between two adjacent drop trays is 10cm, the width of the slits of the drop trays is 2mm, and the distance between two adjacent slits is 25mm. Table 1 shows the results of 10 experiments. As the number of stages increases, the concentration of dissolved oxygen increases gradually, and the concentration of DO in water can increase from 0.1mg / L to 7mg / L.

[0032] Table 1

[0033] Number of times\series

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PUM

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Abstract

The invention discloses a vertical current hydraulic-drop aerating device which mainly comprises a water distributer, multiple stages of hydraulic-drop reoxygenation tanks, a catch basin and a bracket, wherein the water distributer, the multiple-stage hydraulic-drop reoxygenation tank and the catch basin are vertically fixed in the bracket from top to bottom in a three-dimensional mode; spaces among the multiple stages of hydraulic-drop reoxygenation tanks can be vertically freely regulated; the multiple stages of hydraulic-drop reoxygenation tanks are round or square, and the bottom in the tank is provided with a hydraulic-drop disk; the hydraulic-drop disk is provided with a gap; and the lower surface of the hydraulic-drop disk is provided with a waterstop ring. The device is suitable for domestic sewage anaerobic-artificial wetland treating technology, the anaerobic effluent dissolved oxygen concentration is improved, and the ammonia nitrogen and total nitrogen strainaway rate of the artificial wetland is improved. By aiming at the water body with a low dissolved oxygen concentration in the device, natural elevation is utilized, or the surplus life of the water pump is improved, the subsequent processing technology oxygen supply amount is increased, and the strengthened aerating energy consumption is lowered.

Description

technical field [0001] The invention relates to a vertical flow drop water aeration device, which belongs to the field of water pollution control and water treatment. Background technique [0002] Constructed wetland technology originated in Europe and the United States in the early 20th century, and has gradually been widely used due to its advantages such as simple structure, convenient construction, and easy maintenance and management. Up to now, surface flow wetlands, horizontal subsurface flow wetlands, vertical subsurface flow wetlands and composite flow vertical flow wetlands have emerged successively. Subsurface flow constructed wetlands are the most widely used in my country. Due to the shortcomings of subsurface flow constructed wetlands such as easy blockage and low removal rate of ammonia nitrogen, it has been continuously improved. In the subsurface flow constructed wetland treatment technology, because wetland plants cannot provide sufficient oxygen, the disso...

Claims

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Application Information

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IPC IPC(8): C02F7/00C02F3/02C02F3/24C02F3/32
CPCY02W10/10
Inventor 王培京廖日红李其军孟庆义何刚顾永刚邱彦昭黄赟芳
Owner BEIJING WATER SCI & TECH INST