Reverse osmosis system for seawater desalination

Pending Publication Date: 2021-09-07
SHANGHAI YUKE ENVIRONMENTAL ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the current membrane operating pressure (80bar) and other factors, the current water production rate of seawater desalination reverse osmosis has been fluctuating around 40%, and 60% of concentrated water (TDS≈80000ppm) is still unusable

Method used

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  • Reverse osmosis system for seawater desalination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare 250L of 3.2% sodium chloride solution, concentrate it to 8% by reverse osmosis, and set it aside.

[0022] and follow the steps below (such as figure 1 shown) to re-enrich it:

[0023] Step 1: Set reverse osmosis unit RO-1, fresh water circulation pump PD-1, concentrated water high pressure pump PN-1; set reverse osmosis unit RO-2, fresh water circulation pump PD-2, concentrated water high pressure pump PN-2; set Reverse osmosis unit RO-3, fresh water circulation pump PD-3, concentrated water high pressure pump PN-3;

[0024] Step 2: Connect the reverse osmosis unit RO-1, the reverse osmosis unit RO-2 and the reverse osmosis unit RO-3 in sequence;

[0025] The above-mentioned fresh water circulation pump PD-1 is installed on the fresh water side of the reverse osmosis unit RO-1 to circulate the fresh water; the above-mentioned concentrated water high-pressure pump PN-1 is installed on the concentrated water side of the reverse osmosis unit RO-1 to pressurize t...

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Abstract

The invention discloses a reverse osmosis system for seawater desalination. The reverse osmosis system comprises a reverse osmosis unit RO-1, a reverse osmosis unit RO-2 and a reverse osmosis unit RO-3 which are sequentially connected through pipelines, wherein a fresh water circulating pump PD-1 is mounted on the fresh water side of the reverse osmosis unit RO-1, so that fresh water is circulated; a concentrated water high-pressure pump PN-1 is mounted on the concentrated water side of the reverse osmosis unit RO-1 and can pressurize concentrated water and circulate the concentrated water; a fresh water circulating pump PD-2 is mounted on the fresh water side of the reverse osmosis unit RO-2, so that fresh water is circulated; a concentrated water high-pressure pump PN-2 is mounted on the concentrated water side of the reverse osmosis unit RO-2 and can pressurize concentrated water and circulate the concentrated water; a fresh water circulating pump PD-3 is mounted on the fresh water side of the reverse osmosis unit RO-3, so that fresh water is circulated; and a concentrated water high-pressure pump PN-3 is mounted on the concentrated water side of the reverse osmosis unit RO-3 and can pressurize concentrated water and circulate the concentrated water. When the reverse osmosis system for seawater desalination is used for treating seawater, the water production rate can reach 80% or above, the concentration of concentrated water can reach 20% or above, the operation is safe, and the energy consumption is lower.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a seawater desalination reverse osmosis system. Background technique [0002] With the continuous development of economies around the world, human demand for fresh water is also increasing. Seawater desalination is one of the effective ways to solve the shortage of fresh water resources. And with the development of reverse osmosis technology, the proportion of reverse osmosis technology in the application of seawater desalination technology is increasing, and large-scale and large-scale reverse osmosis units are used more and more in the world. However, due to the current membrane operating pressure (80bar) and other factors, the current water production rate of seawater desalination reverse osmosis has been fluctuating around 40%, and 60% of concentrated water (TDS≈80000ppm) is still unusable. . Contents of the invention [0003] The purpose of the present inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/44C02F103/08
CPCC02F1/441C02F2103/08C02F2301/08Y02A20/131
Inventor 傅重喜张玉新
Owner SHANGHAI YUKE ENVIRONMENTAL ENG CO LTD
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