Industrial Technology Research Institute

Pei-Lin Chang

Kon-Tsu Kin

Hsiao-Fen Cheng

Farhang F Shadman

Chiou-Mei Chen

Kuang-An Yang

The present invention discloses a module for processing foaming wastewater containing organic compounds. The UV/ozone oxidation removal module mainly includes an ozone generator, an ozone injector, an ozone dissolution tank, a gas-liquid separator, an ozone destruct unit, a UV reaction tank, a recycling pipeline. The gas-liquid separator contains a stainless tank with an adsorbent inside, preferably activated carbon, for removing foams and a portion of ozone, so that foams are prevented from entering and adversely affecting the ozone destruct unit, and thus a foaming organic wastewater can be treated with the UV/ozone oxidation removal module of the present invention.

Module for removing organic compounds from foaming wastewater by oxidation

The present invention discloses a method for removing impurities from a porous material by flowing a supercritical fluid with or without a modifier therein over a to-be-cleaned porous material having pores at the nanometer level under suitable temperatures and pressures, so that the supercritical fluid migrates into the pores at the nanometer level and removes impurities entrapped therein. The method of the present invention uses the physical and chemical properties of the supercritical fluid and optionally the modifier to clean the porous material without using an acid or alkaline solvent. The method of the present invention conserves water, and is both a highly efficient and environmentally friendly cleaning technique.

Method for removing impurities from porous materials

In order to reduce a total organic carbon (TOC) in ultrapure water to a level less than 1 ppb, several cycles of ozone contact/UV irradiation treatments are carried out in sequence. Preferably, the first cycle further includes an ion exchange treatment which is applied to the resulting UV irradiation water.

Process for removing organics from ultrapure water

The present invention relates to a process and a system for processing waste water containing organic compounds. The system includes a UV/ozone oxidation removal module, or one or more removal modules connected in series whereas such a serial connection can be continuous or discontinuous. A UV/ozone oxidation removal module mainly includes an ozone generator, an ozone injector, an ozone dissolution tank, an ozone decomposition device, a UV reaction tank, a recycling pipeline. The efficiency of the UV/ozone oxidation removal module is controlled by the recycling ratio, the ozone concentration, and the intensity of UV light.

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Hsinchu, Taiwan

Pei-Lin Chang