Ammonia water permo-treatment method for high-salinity wastewater

Abstract

The invention provides an ammonia water permo-treatment method for high-salinity wastewater and relates to the technical field of high-salinity wastewater treatment. High-salinity wastewater is treated through a grating channel and enters a high-salinity wastewater tank after suspended pollutants are removed, water in the high-salinity wastewater permeates to an ammonia water solution through a semipermeable membrane, ammonia gas discharged from the ammonia water solution is stripped and recycled through a stripping tower and complementarily dissolved in the ammonia water solution for permeation, the concentration of the ammonia water solution is increased, the low-concentration ammonia water solution discharged from the stripping tower is further treated, and high-quality water is obtained. Meanwhile, valuable salt in concentrated salt in the discharged high-salinity wastewater is recovered, and ammonia gas is working gas and is circularly used in the treatment process and supplemented regularly. Compared with a conventional reverse osmosis process, the ammonia water osmosis treatment method has the advantages that two main energy consumption components, namely, a high-pressure pump and a booster bump are omitted, and instead, stripping treatment of ammonia water is adopted; the investment and operation costs are reduced, the service life is long, the salt recycling rate is high and the like.

Description

technical field [0001] The invention relates to the technical field of high-salt wastewater treatment, in particular to an ammonia water permeation treatment method for high-salt wastewater. Background technique [0002] At present, the treatment methods of high-salt wastewater include distillation, reverse osmosis, ion exchange, etc., and the treatment costs are relatively high. Contents of the invention [0003] The object of the present invention is to provide a kind of ammonia permeation treatment method of high-salt wastewater, to solve the above-mentioned technical problems. Improve the traditional process and introduce a new treatment method, that is, the osmosis method, using ammonia water as a dilute solution, and using a membrane that cannot pass through the solute but can only pass through the solvent as a semi-permeable membrane, that is, the solute in the high-salt wastewater cannot pass through. Through the semi-permeable membrane, the solvent, that is, pure...

AI Technical Summary

Problems solved by technology

[0002] At present, the treatment methods of high-salt wastewater include distillation, reverse osmosis, ion exchange, etc., and the treatment costs are relatively high.

Images