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Method for cleaning wire winding type filter element

A winding-type filter element and rinsing technology, which is applied in the field of water treatment, achieves the effects of low cleaning input cost, lower production cost and saving maintenance cost.

Active Publication Date: 2013-12-18
STATE GRID HUNAN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a wire-wound filter element cleaning method for the defects of the current filter element pollution treatment method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Take 0.6kg of sodium hydroxide, 0.2kg of sodium phosphate, 0.01kg of alkylphenol polyoxyethylene ether, and 99.19kg of water to make a composite alkali washing liquid; take 0.2kg of hydroxyethylidene diphosphonic acid, 0.15 kg of polyacrylic acid kg, 0.2kg of sodium tripolyphosphate, and 99.45kg of water are mixed to make a compound acid solution;

[0027] (2) Heat the compound cleaning liquid prepared in step (1) to 50-60°C, put it into the wound filter element of the line to be cleaned, soak for 12 hours and take it out;

[0028] (3) Scrub the surface of the wire-wound filter element soaked in step (2) with clean water, brushing in the same direction according to the winding direction of the filter element and cross-washing in the opposite direction, and the scrubbing time is 20 to 30 minutes;

[0029] (4) Rinse the wire-wound filter element scrubbed in step (3) with clean water, and the water pressure is 0.2-0.3MPa;

[0030] (5) Heat the compound acid solution p...

Embodiment 2

[0033] (1) Take 0.8kg of sodium hydroxide, 0.4kg of sodium phosphate, 0.03kg of alkylphenol polyoxyethylene ether, and 98.77kg of water to make a composite alkaline washing liquid; take 0.6kg of hydroxyethylidene diphosphonic acid, 0.5kg of polyacrylic acid kg, 0.8kg of sodium tripolyphosphate, and 98.1kg of water are mixed to make a compound acid solution;

[0034] (2) Heat the compound cleaning solution prepared in step (1) to 50-60°C, put it into the wound filter element of the line to be cleaned, soak for 18 hours and take it out;

[0035] Steps (3) to (6) are the same as in Example 1.

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Abstract

The invention discloses a method for cleaning a wire winding type filter element. The method comprises the following steps of (1) preparing a composite alkali washing solution and a composite acid solution; (2) soaking the wire winding type filter element; (3) scrubbing the wire winding type filter element; (4) flushing the wire winding type filter element; (5) leaching the wire winding type filter element; and (6) cleaning the wire winding type filter element. The method has the advantages that (1) greasy dirt and other silicate impurities can be effectively removed from the wire winding type filter element by soaking the wire winding type filter element, iron ions deposited in the filter element are removed through the composite acid solution, and the problem of blockage is thoroughly solved; (2) the cleaning steps are simple and easy to implement. The filter capacity of the filter element cleaned through the method can be recovered by over 80 percent, and an appearance color of the filter element is recovered to an original color; (3) a filter element body cannot be damaged in the cleaning process, the investment cost is low, the cleaning cost is only one eightieth to one fiftieth of the price of the newly-purchased wire winding type filter element, the production cost is greatly reduced, and the maintenance cost is saved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a cleaning method for a thread-wound filter element. Background technique [0002] A wire wound filter element is a precision tubular depth filter element. The winding wire used is generally made of textile fiber roving, which is precisely wound on a porous skeleton according to a specific process. By controlling the winding density during winding, a variety of filter elements with different filtration precision can be formed. The internal structure of the wire-wound filter element is a honeycomb shape with sparse outside and dense inside, thus obtaining excellent filtration characteristics. And thus it has the function of removing suspended solids, particles, rust, sediment and other impurities in the liquid, and can withstand high filtration pressure. Its filter pore diameter is large on the outside and small on the inside, so it has excellent deep filtra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D41/00C11D10/02C11D7/60C11D7/36C11D7/16C11D7/26
Inventor 郭新茹
Owner STATE GRID HUNAN ELECTRIC POWER
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