Cleaning method and system for membrane equipment
An equipment and cleaning liquid technology, applied in the field of membrane equipment cleaning methods and systems, can solve the problems of rising cleaning costs, clogging of element ends, poor cleaning effect of reverse osmosis membranes at the ends, etc., so as to reduce cleaning costs, realize recycling, The effect of saving consumption
Pending Publication Date: 2019-10-08
SHANDONG TAIKAI HIGH VOLTAGE SWITCH
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Problems solved by technology
The traditional on-line chemical cleaning method cleans according to the water inlet direction of the equipment, resulting in poor cleaning effect of the reverse osmosis membrane at the end
After several times of online cleaning, the end of the component is severely clogged, and off-line chemical cleaning is required, resulting in increased cleaning costs
Method used
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[0057] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily realize them. Also, for clarity, parts not related to describing the exemplary embodiments are omitted in the drawings.
[0058] In the present disclosure, it should be understood that terms such as "comprising" or "having" are intended to indicate the presence of features, numbers, steps, acts, components, parts or combinations thereof disclosed in the specification, and are not intended to exclude one or a plurality of other features, numbers, steps, acts, parts, parts or combinations thereof exist or are added.
[0059] In addition, it should be noted that, in the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings...
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Embodiments of the invention disclose a cleaning method and system for membrane equipment. The method comprises the following steps: preparing a cleaning liquid in a cleaning container, introducing the cleaning liquid from the first water inlet end of a first-stage membrane element, and discharging the cleaning liquid from the first water outlet end and the second water outlet end of the first-stage membrane element, wherein the discharged cleaning liquid flows into the cleaning container; introducing the cleaning liquid from the first water outlet end of the first-stage membrane element, anddischarging the cleaning liquid from the first water inlet end and the second water outlet end of the first-stage membrane element, wherein the discharged cleaning liquid flows into the cleaning container; and detecting parameter change of the discharged cleaning liquid until the parameter change of the cleaning liquid is within a threshold range. The technical solution provided by the invention avoids the situations that when a first-stage membrane element is cleaned in a single direction, one end of the membrane element is easy to block and off-line cleaning is needed, and the tail end portion of the first-stage membrane element which is easy to block can be cleaned on line; and the recycling of the cleaning liquid is realized, the usage amount of the cleaning liquid can be effectively saved, and the cleaning costs are reduced.
Description
technical field [0001] The present disclosure relates to the technical field of membrane equipment, in particular to a membrane equipment cleaning method and system. Background technique [0002] Reverse osmosis membrane equipment is the core component of membrane water treatment technology, which can remove inorganic salts, organic matter, microorganisms, etc. in water sources to obtain pure water. At present, the existing reverse osmosis membrane equipment mainly achieves the purpose of pure water preparation through the reverse osmosis membrane under a certain pressure. In the actual process of using reverse osmosis membrane equipment to treat tap water or industrial wastewater, after the reverse osmosis membrane element has been running for a period of time, due to the concentration of impurity ions such as calcium and magnesium on the concentrated water side and the concentration of residual organic matter in the water is continuously concentrated and increased, after r...
Claims
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IPC IPC(8): B01D65/02
CPCB01D65/02B01D2321/04B01D2321/02
Inventor 刘博宋绍鹏孔令强张树泉王岩
Owner SHANDONG TAIKAI HIGH VOLTAGE SWITCH