A kind of portable forward osmosis water purification bag and its use and cleaning method

Abstract

The invention belongs to the technical field of water purification, and particularly relates to a portable forward osmosis water purification bag and a using and cleaning method thereof. The portable forward osmosis water purification bag comprises an outer bag and an inner bag, wherein the outer bag is used for containing raw water; the inner bag is arranged in the outer bag and used for containing an absorbing liquid; the outer bag is made of a waterproof material; the inner bag is made of a forward osmosis membrane material; and furthermore, water inlets and water outlets are respectively formed in the outer bag and the inner bag in a staggered manner. According to the portable forward osmosis water purification bag, emergency drinking water can be provided at high efficiency; with a cross-flow cleaning technology as a support, the related structure capable of achieving forward-osmosis cross-flow cleaning is designed; the pollutants intercepted on the surface of the forward osmosis membrane surface are effectively removed; the service life of the water purification bag is prolonged; and the portable forward osmosis water purification bag is suitable for field application, and especially suitable for the conditions of army officers and soldiers or personnel for executing the task outdoors.

Description

technical field [0001] The invention belongs to the technical field of water quality purification, and in particular relates to a portable forward osmosis water purification bag and a method for using and cleaning the same. Background technique [0002] Outdoor activities or missions will face the problem of drinking water safety. With the rapid development of forward osmosis technology, around field emergency water supply, there have been patents for water purification bags based on forward osmosis technology, but the water purification bags designed by these patents are basically disposable. Due to the current high price of forward osmosis membranes, The large-scale production of these patents has been limited. Although there are also designs of water purification bags that claim to be used multiple times, in fact, the specific cleaning method after use is not clear. [0003] Chinese patent application 201310077212.5 discloses a multifunctional forward osmosis membrane w...

AI Technical Summary

Problems solved by technology

Due to the vertical distribution of the forward osmosis membrane in the water purification bag, it is required to place the entire water purification bag horizontally during use, so it is not convenient to use for water purification during outdoor activities

In addition, since the contact surface between the forward osmosis membrane and the raw water is only one surface, the permeation area is small, and the efficiency of water purification is also low; the installation of a water purification chamber requires the addition of purified water, and in some harsh environments, it is simply impossible Unable to find clean water, hindering the purification of raw water

The main defect of the water purification bag of this application is that the complexity of the raw water quality in the field environment determines the complexity of the pollution of the forward osmosis membrane. The life of the water purification bag will be greatly affected. However, the water purification bag has a closed structure and is inconvenient to clean, which cannot solve this problem

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