Full-membrane micro-concentrated water nanofiltration machine

Abstract

The invention discloses a full-membrane micro-concentrated water nanofiltration machine, and relates to the novel nanofiltration machine which is suitable for reducing replacement frequency of a pretreatment filter element. Pretreatment is carried out by adopting ultrafiltration, so that a sterile state is kept in a machine, discharge of concentrated water is reduced, and the recovery rate of purewater is increased. The nanofiltration machine comprises an ultrafiltration filter element, a vegetable washing basin faucet, a booster pump, a first-stage nanofiltration membrane, a second-stage nanofiltration membrane, a rear activated carbon filter element, a purified water faucet, a concentrated water proportioning device and a water storage barrel; a water inlet of the ultrafiltration filterelement is connected with a tap water pipeline through a water inlet pipe; a water outlet of the ultrafiltration filter element is connected with a water inlet of the booster pump through a pipeline;a water outlet of the booster pump is connected with a water inlet of the first-stage nanofiltration membrane through a pipeline; a concentrated water outlet of the first-stage nanofiltration membrane is connected with a water inlet of the second-stage nanofiltration membrane through a pipeline; a pure water outlet of the first-stage nanofiltration membrane and a pure water outlet of the second-stage nanofiltration membrane are connected with the water storage barrel through pipelines; a water outlet of the water storage barrel is connected with a water inlet of the rear activated carbon filter element through a pipeline; and a water outlet of the rear activated carbon filter element is connected with the purified water faucet through a pipeline.

Description

technical field [0001] The whole-membrane micro-concentrated water nanofiltration machine of the present invention relates to a new type of nanofiltration machine, which is suitable for reducing the replacement frequency of pretreatment filter elements, uses ultrafiltration as pretreatment, and maintains a sterile state inside the machine, adopts multi-stage membranes in series, Reduce concentrated water discharge and increase pure water recovery. Background technique [0002] At present, the pretreatment filter elements of various nanofiltration machines are prone to blockage and frequent replacement, resulting in high cost of use; pretreatment uses activated carbon filtration, resulting in the removal of residual chlorine in raw water (usually tap water), and the back-end nanofiltration membrane and water storage tank are prone to breed bacteria . And at present, the concentrated water discharge ratio of various nanofiltration machines is high. Contents of the invention...

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Problems solved by technology

[0003] The present invention aims at the fact that the pretreatment filter elements of various nanofiltration machines are easy to be blocked and replaced frequently, resulting in high cost of use; the pretreatment adopts activated carbon filtration, resulting in the removal of residual chlorine in raw water (generally tap water), and the back-end nanofiltration membrane and water storage tank It is easy to breed bacteria, and the current situation that the concentrated water discharge ratio of various nanofiltration machines is too high. A full-membrane micro-concentrated water nanofiltration machine is provided to solve the above problems, reduce the replacement frequency of filter elements, and solve the current problem of bacteria breeding in water storage tanks. and reduce concentrated water discharge

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