CN201144167Y - End-stage product water return type reverse osmosis device - Google Patents

Abstract

A final-stage reverse osmosis product water return type reverse osmosis device, which is composed of a high-pressure pump and multi-stage reverse osmosis membrane modules, is characterized in that a product water return pipe is connected from the final-stage reverse osmosis module water production pipe to connect it with high pressure The pump inlet pipe is connected to effectively improve the water quality of the reverse osmosis device by reducing the conductivity of the mixed product water and the influent water conductivity of the reverse osmosis device.

Description

End-stage product water return type reverse osmosis device

technical field

The utility model relates to a reverse osmosis membrane pure water device.

Background technique

At present, it is more common to use reverse osmosis membrane devices to produce pure water. It has the characteristics of good water quality, environmental protection, and energy saving; When the water quality is required, it is generally necessary to add subsequent equipment to further treat the produced water in order to improve the water quality and make it meet the requirements.

Contents of the invention

The purpose of this utility model is to aim at the shortcomings of ordinary reverse osmosis devices, so that when the water quality of the produced water cannot meet the requirements, the water quality of the produced water of the reverse osmosis device can be improved without adding subsequent treatment equipment, so that it can reach Require.

The technical solution of the utility model is: in the reverse osmosis device composed of the high-pressure pump and multi-stage reverse osmosis membrane components connected in sequence by pipelines, especially a produced water return pipe is connected to the water production pipe of the reverse osmosis component from the reverse osmosis module, so that It is connected with the inlet pipe of the high pressure pump.

In the utility model, a produced water return pipe is connected to the water production pipe of the final reverse osmosis component to connect it with the front inlet pipe of the high-pressure pump. In this way, the content of the produced water in the mixed product water due to the high water conductivity is reduced, which reduces the reaction rate. The conductivity of the mixed product water of the osmosis device; at the same time, the backflow of the product water of the final reverse osmosis module reduces the conductivity of the feed water of the reverse osmosis device, and also reduces the conductivity of the product water of the multi-stage reverse osmosis module; Under the premise of the equipment, the purpose of effectively improving the water quality of the reverse osmosis device is achieved.

Description of drawings

Accompanying drawing is the overall structural representation of the utility model.

Detailed ways

The structure of the utility model is shown in the accompanying drawings. The produced water 1 obtained from the pretreatment device is used as the water inlet of the reverse osmosis device, and is sent to the high-pressure pump 3 through the water inlet pipe 2. After being pressurized by the high-pressure pump 3, it passes through the high-pressure pump. The outlet pipe 4 is sent to the multistage reverse osmosis membrane module 5, and after being treated by the first stage reverse osmosis membrane module 5-1 in the multistage reverse osmosis membrane module 5, the pure water produced is supplied externally through the pipeline 9; the concentrated water is supplied through the pipeline 6 is sent to the reverse osmosis membrane module 5-2 for further processing, and the pure water produced passes through the pipeline 10, and after being mixed with the pure water produced by the reverse osmosis membrane module 5-1, passes through the pipeline 11 to become externally supplied pure water 12; Concentrated water enters concentrated water tank 8 through pipeline 7 . In the present utility model, especially from the water production pipe 10 of the reverse osmosis module 5-2 of the reverse osmosis unit 5-2, a water production return pipe 13 is connected to the inlet pipe 2 of the high pressure pump 3, and the water production return pipe 13 is A regulating valve is provided to adjust the amount of return water.

Due to the backflow of the produced water of the final reverse osmosis module, the conductivity of the feed water of the reverse osmosis device and the conductivity of the mixed product water of the reverse osmosis membrane module are effectively reduced, so that the effective The purpose of improving the water quality of the reverse osmosis device.

Claims (2)

1, a kind of latter end produces water reflow type reverse osmosis unit, comprise that the high-pressure pump that is linked in sequence with pipeline and multistage reverse osmosis membrane set up the reverse osmosis unit of forming, it is characterized in that from latter end reverse osmosis module water producing pipe, draw and pick out one and produce the water return line, make it to be connected with the high-pressure pump inlet pipe.

2, latter end according to claim 1 produces water reflow type reverse osmosis unit, it is characterized in that first-stage reverse osmosis device or multistage reverse osmosis unit.

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