Positive penetration sea water desalinization strong brine processing technology and processing system

Abstract

The invention discloses a positive penetration sea water desalinization strong brine processing technology which comprises the following steps: adopting a positive penetration membrane component, using strong brine obtained by desalting sea water as drawing liquid, using freshwater as charging liquid, discharging the strong brine from the positive penetration membrane component after the strong brine obtained by desalting sea water mixes part of freshwater permeated from a charging side at a permeation side of the positive penetration membrane component and turns into diluted standard-reachingbrine; and discharging residue of the charging liquid from the positive penetration membrane component. The invention also discloses a positive penetration sea water desalinization strong brine processing system which comprises a charging fluid water pump, a positive penetration membrane module, a drawing liquid water pump connected with a transmission side of the positive penetration membrane module, wherein a charging fluid side of the positive penetration membrane module is connected with the charging fluid water pump and provided with a residual charging fluid discharging port, and the transmission side of the positive penetration membrane module is provided with a diluted standard-reaching brine discharging port. The invention can dilute strong brine obtained by desalting sea water to the level of the original sea water, thus avoiding the rising of local sea area salinity when sea water is discharged and protecting marine environment.

Description

technical field [0001] The invention relates to a forward osmosis process and a treatment system using the process, in particular to a forward osmosis seawater desalination concentrated brine treatment process and a treatment system. Background technique [0002] The salinity of concentrated brine discharged from seawater desalination plants is generally about twice that of seawater. If these brines are discharged improperly, it will lead to an increase in the salinity of the discharge sea area. Studies have found that the respiration and excretion capabilities of many marine organisms are closely related to the salinity of their surrounding environment. The increase in salinity will change the balance of the body fluid of marine organisms and the osmotic pressure in the seawater of their living environment, thereby reducing the fecundity of marine organisms (mainly larvae and young), or even making them extinct. Some marine organisms are sensitive to salinity, and can onl...

AI Technical Summary

Problems solved by technology

Although certain discharge measures have been taken, the increase in the salinity of the discharge sea area is inevitable, the impact on the marine environment cannot be avoided, and the cost of equipment investment is high

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