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Reclaimed water recycling treatment technology

A treatment process and technology for reclaimed water, applied in the field of water treatment, can solve the problems of fouling of security filters, fouling of reverse osmosis membranes, substandard water inflow of reverse osmosis devices, etc., and achieve the effect of preventing clogging and prolonging service life.

Active Publication Date: 2016-02-17
新疆河润科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Reclaimed water recycling treatment technology
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Examples

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Embodiment 1

[0028] This embodiment provides a treatment process for reuse of reclaimed water. The process uses circulating water and sewage as raw water, and performs ozone aeration treatment before the raw water enters the reuse water tank, oxidizes and sterilizes, and oxidizes ferrous ions in the water body. into ferric ions to remove dissolved carbon dioxide in water.

[0029] The treatment process of reclaimed water reuse in this embodiment avoids adjusting the water body to alkaline conditions in the subsequent 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, Thus, the condition of acidic water inflow to the reverse osmosis membrane of the reverse osmosis device used in the follow-up treatment process of reclaimed water is satisfied, the clogging of the reverse osmosis membrane is prevented, and the service life of the reverse osmosis membrane is prolonged. Replenis...

Embodiment 2

[0031] Such as figure 1 As shown, the present embodiment provides a treatment process for reclaimed water, comprising the following steps:

[0032] The circulating water sewage 6 is used as raw water, and before the raw water enters the reuse water tank 8, ozone aeration treatment is performed to oxidize and sterilize, and ferrous ions in the water body are oxidized to ferric ions. Preferably, the concentration of iron ions in the circulating water sewage 6 is 0.3-1.0 mg / L. Add ozone aeration treatment before entering the reuse water tank 8, utilize the oxidation and sterilization properties of ozone, pass ozone into the raw water for sterilization, and remove dissolved carbon dioxide in the water body. The silicon dioxide in the circulating water sewage 6 in this embodiment exceeds the standard.

[0033] The treatment process of reclaimed water reuse in this embodiment avoids adjusting the water body to alkaline conditions in the subsequent treatment process of reclaimed wa...

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Abstract

The invention discloses a reclaimed water recycling treatment technology, which is characterized in that circulating water sewerage is taken as raw water, the raw water is performed with ozone aeration treatment and then is introduced into a recycling water tank, then is oxidized and sterilized, ferrous ions in water body are oxidized to trivalent iron ions, and carbon dioxide in water body is removed. According to the reclaimed water recycling treatment technology, in the subsequent step of the reclaimed water recycling treatment technology, the water body is regulated to alkaline condition, carbon dioxide dissolved in the water body can be removed, so that generation of silica colloid or gel can be avoided or reduced, and thereby acidic intake water condition of a reverse osmosis membrane of a reverse osmosis apparatus used in the subsequent step of the reclaimed water recycling treatment technology can be satisfied, obstruction of the reverse osmosis membrane can be prevented, and usage life of the reverse osmosis membrane is prolonged.

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 ...

Claims

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Application Information

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IPC IPC(8): C02F1/78C02F1/50C02F9/04
Inventor 王全成张伟李卫利
Owner 新疆河润科技有限公司
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