Water quality on-line detection method and system

A detection method and detection system technology, which are used in the preparation of test water, material inspection products, and test samples, can solve the problems of easy blockage of the outlet, high cost, easy blockage, etc., to avoid blockage, high reliability, and difficult blocking effect

Active Publication Date: 2009-05-13
FOCUSED PHOTONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. It cannot be cleaned and filtered at the same time, that is, it cannot be filtered and sampled continuously, and it is easy to block when filtered, and the cleaning effect is poor
[0006] 2. The structure is more complicated, and it also needs to be equipped with mechanical structures such as reducers and scraping knives
[0007] 3. The cost is high, and components such as electric valves, reducers, scraping blades, differential pressure displays, and programmable controllers are required
[0018] 1. The cost is high, and components such as the water outlet pipe 11, the pinch valve 22, and the waste water chamber 20 are required, and the pinch valve

Method used

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  • Water quality on-line detection method and system
  • Water quality on-line detection method and system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0067] Example 1:

[0068] An online water quality detection system for measuring COD in water samples, including a sampling device, a pretreatment device, a detection pool and a detection device connected in sequence.

[0069] Such as image 3 As shown, the pretreatment device includes a water inlet pipe 10 connected to a sampling device, a filter screen 30, a water storage cavity 40, and a waste water cavity 20. The filter screen 30 is arranged between the water storage chamber 40 and the waste water chamber 20, the water inlet pipe 10 is connected to a sampling device, and the angle a between the opening direction of the end of the water inlet pipe 10 and the filter screen 30 is 30°. The water storage cavity 40 under the filter screen 30 is provided with a water intake 41 and a drain 42. The water intake 41 is connected to a downstream detection pool through a water intake pipe. The drain 42 is connected to a drain valve 82 through a drain pipe 81. The water intake 41 is also p...

Example Embodiment

[0085] Example 2:

[0086] A water quality online detection system for measuring ammonia nitrogen in water samples, such as Figure 4 As shown, the difference from Example 1 is:

[0087] 1. Removed the homogenizing device.

[0088] 2. The angle a between the opening direction of the end of the inlet pipe and the filter screen 30 is 8°.

[0089] 3. Rinse the filter with steam instead of clean water.

[0090] This embodiment also discloses an online water quality detection method. The difference from Embodiment 1 is:

[0091] 1. There is no homogenization step of stirring the water sample to be tested, and no stirring cleaning step of stirring the water sample in the water storage chamber after the measurement is completed.

[0092] 2. The angle a between the speed direction of the water sample passing through the filter screen and the filter screen 30 is 8°.

Example Embodiment

[0093] Example 3:

[0094] A water quality online detection system for measuring COD of water samples, such as Figure 6 As shown, the difference from Example 1 is:

[0095] 1. Remove the drain valve 82.

[0096] 2. The water storage chamber 40 and the waste water chamber 20 are made of transparent glass.

[0097] 3. The angle a between the opening direction of the end of the water inlet pipe 10 and the filter screen 30 is 20°.

[0098] This embodiment also discloses an online water quality detection method, which measures the COD of water samples, such as Picture 9 As shown, it includes the following steps:

[0099] a. Sampling steps

[0100] The water pump in the sampling device is turned on to obtain a water sample in the environment to be measured and send it to the pretreatment device through the water inlet pipe 10. The angle a between the speed direction of the water sample and the filter 30 is 20°.

[0101] b. Pretreatment steps

[0102] On the one hand, part of the water ...

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PUM

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Abstract

The invention discloses a method for on-line detecting water quality, which comprises the following steps: a. sample collecting, wherein, water sample in the test environment is collected and delivered to pretreatment device; b, pretreatment, wherein, water sample flows out from an inlet tube into a water container after flowing through a filter screen, wherein, the angle formed between the water velocity attitude and the filter screen is an acute or a right angle; and c. measuring, wherein, the water sample to be tested is collected from the water container, and the water parameter is obtained by analyzing the test water sample to be tested. The invention also discloses a system for on-line detecting water quality. The invention has the advantages of continuous working, uneasy blockage, low cost, and the like, and the invention can be applied in various water sample on-line analysis.

Description

technical field [0001] The invention relates to water quality analysis, in particular to an online water quality detection method and system. Background technique [0002] The existing water quality online analysis system generally consists of a sampling device, a pretreatment device, a detection pool and a detection device. The sampling device sends the water sample to be tested to the pretreatment device, which filters out various solid impurities in the water sample, such as sludge, aquatic plants, etc., and then sends the filtered water sample to the detection pool, and uses the detection device Detection is carried out to obtain the parameters of the water sample, such as COD and ammonia nitrogen. [0003] The Chinese patent whose notification number is CN2493650Y discloses a fully automatic no-cleaning filter. There is a strip-shaped scraping knife, and the trumpet-shaped interface corresponds to the pressure water flushing port and corresponds to an interval cavity ...

Claims

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Application Information

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IPC IPC(8): G01N33/18G01N1/34
Inventor 陈生龙章松波王健
Owner FOCUSED PHOTONICS
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