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A kind of tangential flow in-situ water sample filter and filtering method

A filter, tangential flow technology, applied in chemical instruments and methods, filtration treatment, water/sewage treatment, etc. People on duty, good filtering effect, not easy to block the effect

Active Publication Date: 2021-07-13
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] None of the existing filtration methods can provide uninterrupted real-time filtered water samples for long-term unattended in-situ water quality analyzers. Manual cleaning of filters or replacement of filters is time-consuming for instruments located in remote areas or offshore buoys Laborious, so the spatio-temporal resolution of the in situ analysis of the target is greatly reduced

Method used

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  • A kind of tangential flow in-situ water sample filter and filtering method
  • A kind of tangential flow in-situ water sample filter and filtering method
  • A kind of tangential flow in-situ water sample filter and filtering method

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Please check Figure 1 to Figure 12 , a preferred embodiment of a tangential flow in-situ water sample filter, said a kind of tangential flow in-situ water sample filter is used in conjunction with a water pump (not shown in the figure), and it includes : a housing 100, a main shaft power transmission unit, and a filter disc 200.

[0061] Such as Figure 8 As shown, the housing 100 includes an upper cover 110 , a hollow cylindrical sleeve 120 and a lower cover 130 connected in sequence. In this embodiment, the upper cover plate 110 and the hollow cylindrical sleeve 120 , and the hollow cylindrical sleeve 120 and the lower cover plate 130 are all fixedly connected by screws. Alternatively, the connection between the upper cover plate 110 and the hollow cylindrical sleeve 120 , and between the hollow cylindrical sleeve 120 and the lower cover plate 130 may also be connected by snap-fitting or mortise-and-mortise joints, which are not limited thereto.

[0062] The main ...

Embodiment 2

[0091] The tangential flow in-situ water sample filter is the same as in Example 1, specifically as follows:

[0092] (1) A circular polyethersulfone filter membrane 210 with a diameter of 138 mm and a pore size of 0.45 μm is attached to the front of the porous press plate 220 , and the filter membrane 210 is sealed and fixed by the multi-wave sealing surface of the porous press plate 220 and the first filter holder 250 . Put the first fastener 260 on the first step surface 242, and the second fastener 270 on the second step surface 251, and sequentially connect the first fastener 260 and the first filter holder through fastening screws. 240, the sealing gasket 280, the deflector 230, the first sealing ring 203, the porous plate 220, the second filter holder 250 and the second fastener 270 are connected together to complete the assembly of the filter disc 200; and through the locking piece 245 The first locking disc 243 and the second locking disc 301 are locked and fixed with...

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Abstract

The invention discloses a tangential flow in-situ water sample filter and a filtering method. Under the joint action of the rotation of the filter disc and the suction of a water pump, the raw water permeates the filter membrane in the form of tangential flow, enters the filter chamber and then flows out from the outlet hole. The filter adopts a tangential flow filtration method, a filter membrane is attached to the filter disc, a filter cavity is left in the filter disc, and a diversion groove is set. When the filter disc rotates, the raw water and the filter membrane move relative to each other, generating shear flow on the surface of the filter membrane; the raw water does not flow perpendicular to the surface of the filter membrane, so that water and small molecular solutes pass through the filter membrane and enter the filter chamber; under the action of the pump, The filtered clean water in the filter chamber flows out through the built-in diversion groove; the raw water continuously scours the surface of the filter membrane under the action of shear force to inhibit the formation of filter cake. The filter is not prone to clogging, and can meet the needs of in-situ water quality monitoring instruments deployed in different water bodies, especially water bodies with high turbidity, for online, long-term and continuous filtration of water samples.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, in particular to a tangentially flowing water in-situ sample filter and a filtering method. Background technique [0002] Water quality in-situ monitoring technology refers to the technical method of placing monitoring instruments directly into the water body to detect target objects, which can avoid possible pollution and operational errors in the process of sample collection, storage and transportation, and can obtain more real-time and more accurate information about the water environment. The high-quality observation data makes up for the shortcomings of the traditional laboratory analysis mode, and is recognized as the best and effective analysis method in the field of water quality analysis. However, the content of suspended particles in water bodies such as surface water and coastal seawater is high (that is, high turbidity), especially in areas where in-situ monitoring is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/44C02F9/02
CPCC02F1/001C02F1/44C02F2201/002C02F2303/16
Inventor 袁东星许金林坤德
Owner XIAMEN UNIV