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Eutrophicated shallow lake drinking water algae-blocking water collecting device, and testing device and testing method thereof

A technology of eutrophication and water intake device, which is applied in the direction of sampling device, measuring device, machine/structural component testing, etc., can solve the problem of lack of algae avoidance water intake device, etc., and achieve simple and economical performance test device and method, and good algae avoidance Effect, structure is simple and economical

Inactive Publication Date: 2018-11-16
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, there are few studies on algae-avoiding water intake, and most of them are used in deep-water lakes. The drinking water of eutrophic shallow lakes is particularly lacking in algae-avoiding water intake devices. Therefore, the invention of simple and economical water intake devices is of great significance to drinking water safety.

Method used

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  • Eutrophicated shallow lake drinking water algae-blocking water collecting device, and testing device and testing method thereof
  • Eutrophicated shallow lake drinking water algae-blocking water collecting device, and testing device and testing method thereof
  • Eutrophicated shallow lake drinking water algae-blocking water collecting device, and testing device and testing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] This embodiment provides a device for drinking algae-avoiding drinking water in shallow lakes with eutrophication, such as figure 1 , figure 2 As shown, it includes a box body 1 and a water intake pipe 2 protruding from the pipe opening on the side of the box body 1. On the side of the box body 1 and at a position higher than the pipe opening, at least one water inlet window 3 is provided. Each An algae barrier 4 is respectively connected above and below the water inlet window 3. The algae barrier 4 is in the shape of an arc surface and is tangent to the side of the box body 1 at the connection. The arc length and width of the algae barrier 4 are equal or approximate Equal, the radian of the algae barrier 4 is π / 4, and the width is greater than or equal to the width of the widest part of the water inlet window 3. For example, the water inlet window is circular, and the width of the algae barrier is greater than or equal to the diameter of the water inlet window. The w...

Embodiment 2

[0034] This embodiment provides a performance test device for drinking water algae avoidance device for eutrophic shallow lake drinking water, mainly to perform performance test on the device in embodiment 1, such as image 3 Shown, comprise pool 11, sump well 12, water pump 13 and the algae-avoiding water intake device 14 in embodiment 1, pool 11 outer rings are provided with annular channel 11a, the inner wall height of annular channel 11a is lower than outer wall height, if directly Water flowing into the pool will lead to unstable water flow. Therefore, the height of the inner wall is lower than the height of the outer wall, so that the circulating water flow can evenly and smoothly overflow from the side wall of the pool into the pool 11. A flow stabilizer is placed in the annular channel 11a, which can make the water flow Smooth circulation flow in the annular channel 11a. The algae avoidance water intake device 14 is installed in the pool 11, the water intake pipe 2 of ...

Embodiment 3

[0036] This embodiment provides a performance testing method of an algae-avoiding water intake device for drinking water in eutrophic shallow lakes. The method is based on the performance testing device in Example 1, and the experimental parameters are:

[0037] The box body of the algae-avoiding water intake device is generally made of reinforced concrete, and its roughness is generally 0.011-0.014. For the convenience of observation, the box body is made of plexiglass in this experiment, such as Figure 4 As shown, the roughness is generally in the range of 0.0085-0.0095, and converted into the prototype according to the roughness scale is about 0.012-0.0134, which basically achieves similar resistance; the water intake pipe in the prototype is a steel pipe, and the roughness is generally in the range of 0.011-0.014. The PVC pipe is used, and its roughness is 0.008-0.009, which can basically achieve similar resistance. The length of the pool is 4m, the width is 3.5m, and the...

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Abstract

The invention discloses an eutrophicated shallow lake drinking water algae-blocking water collecting device. The water collecting device comprises a box body and a water collecting tube extended out of a pipeline opening arranged in the side surface of the box body, at least one water inlet window is arranged at a position, higher than the pipeline opening, of the side surface of the box body, theupper part and the lower part of every water inlet window are respectively connected with alga blocking plates, every alga blocking plate has an cambered surface shape, and is tangent to the side surface, at the connection, of the box body, and the alga blocking plates have equal to approximately equal arc lengths and widths. The invention also discloses a performance testing device and a performance testing method of the eutrophicated shallow lake drinking water algae-blocking water collecting device. The water collecting device is economical and simple, and can realize an excellent alga blocking effect.

Description

technical field [0001] The invention relates to the field of ecological hydraulic structures, in particular to an algae-avoiding water intake device attached to a shallow lake water intake structure, a testing device and a testing method thereof. Background technique [0002] Affected by the eutrophication of lakes and reservoirs, a large number of algae blooms seriously threaten people's drinking water safety. Most of the existing water intake structures of lakes and reservoirs still follow the structural type of river channel water intake structures, lacking algae avoidance measures, so it is easier to obtain raw water with high algae for direct water intake. After the high-algae raw water enters the water plant, it will increase the amount of coagulant, which will easily cause filter blockage, increase the number and time of backwashing, etc., thereby increasing the treatment difficulty and cost of the water supply plant. discontinued. [0003] In order to solve the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14G01M99/00
CPCG01N1/14G01M99/005
Inventor 陈求稳林育青张建云关铁生施文卿胡柳明陈诚
Owner NANJING HYDRAULIC RES INST
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