A treatment process for reuse of reclaimed water

Abstract

The invention discloses a treatment process for reuse of reclaimed water. The process takes circulating water and sewage as raw water, performs ozone aeration treatment before the raw water enters a reuse water tank, oxidizes and sterilizes, and oxidizes ferrous ions in the water body into ferric ions to remove carbon dioxide in water. The treatment process of reclaimed water reuse in the present invention avoids the subsequent adjustment of the water body to an alkaline condition in the treatment process of reclaimed water reuse to remove dissolved carbon dioxide in the water body, thereby avoiding or reducing the generation of silica colloids or gels, thereby It satisfies the condition of acidic water inflow to the reverse osmosis membrane of the reverse osmosis device used in the follow-up of the treatment process of reclaimed water reuse, prevents the clogging of the reverse osmosis membrane, and prolongs the service life of the reverse osmosis membrane.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a treatment process for reusing middle water. Background technique [0002] The content of iron ions in reclaimed water is too high, and iron ions generally exist in reclaimed water as divalent iron ions, but divalent iron ions are easily oxidized into ferric ions by oxygen dissolved in reclaimed water, and then form ferric hydroxide colloid. Once iron ions exist in the reclaimed water in the form of colloid, it is easy to cause serious water pollution, and it is easy to provide a source for the vegetative bacteria that corrode under the scale. [0003] In the treatment of reclaimed water, the reclaimed water will enter the reclaimed water tank, be filtered, and then processed through the subsequent use of reverse osmosis devices. The reverse osmosis device has requirements for the concentration of iron ions, and the content of iron ions in the incoming water ...

AI Technical Summary

Problems solved by technology

If the iron ion content in the raw water is high, but no iron removal measures are taken, it will cause fouling of the security filter, and in severe cases, the influent water of the subsequent reverse osmosis device will not meet the standard, which will lead to the reverse osmosis of the ferric hydroxide colloid in the reverse osmosis device. Adhesion on the osmotic membrane, causing fouling of the reverse osmosis membrane

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