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Method for removing organic matters in water through catalytic ozonization of FeOCl

A technology of oxyferric chloride and organic matter, applied in chemical instruments and methods, oxidized water/sewage treatment, water pollutants, etc., can solve the problems of low removal rate, high cost, long degradation time, etc., and achieve good stability , long service life, accelerated degradation and mineralization effects

Active Publication Date: 2018-02-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to solve the problems of long degradation time, high cost and low removal rate of existing methods for removing organic matter in water, and provides a method for removing organic matter in water by catalyzing ozonation with oxyferric chloride

Method used

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Examples

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specific Embodiment approach 1

[0017] Specific embodiment one: In this embodiment, a method for catalytic ozonation of oxyferric chloride to remove organic matter in water is carried out according to the following steps:

[0018] Add water containing organic matter into the reactor, and add 2mg / L to 1000mg / L of FeOCl catalyst into the water containing organic matter under the condition of stirring speed of 300r / min~800r / min. Introduce ozone into the medium, the amount of ozone introduced is 20.5mg / L-250mg / L, and then react for 10min-40min at a temperature of 2°C-85°C to complete the catalytic ozonation of oxyferric chloride to remove organic matter in water Methods;

[0019] The molar concentration of the ozone feed amount is 5 to 50 times the molar concentration of the water body containing organic matter; the pH value of the water body containing organic matter is 1 to 13; the FeOCl catalyst is FeOCl, intercalated FeOCl or FeOCl supported on a carrier.

[0020] When the FeOCl catalyst described in this ...

specific Embodiment approach 2

[0024] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the reactor is a semi-continuous flow batch columnar reactor with a cross-sectional diameter of 3 cm to 10 cm and a reactor length of 0.2 m to 2 m. The pump or magnetic circulation pump forces the water sample to circulate, and the hydraulic flow rate is 1L / h~100L / h. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the reactor is a continuous flow columnar reactor with a cross-sectional diameter of 2 cm to 20 cm and a reactor length of 0.5 m to 3 m. The device is filled with water from the top water tank through gravity flow, and the hydraulic flow rate is 0.5L / h~150L / h. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for removing organic matters in water through catalytic ozonization of FeOCl, relates to the method for removing the organic matters in the water and aims to solve theproblems of long degradation time, high cost and low removing rate of an existing method for removing the organic matters in the water are solved. The method comprises the following steps: adding a water body containing the organic matters in a reactor; adding 2 to 1000 mg / L of an FeOCl catalyst into the water body containing the organic matters under the condition that the stirring speed is 300to 800 r / min, and simultaneously introducing ozone to the water body containing the organic matters, wherein the introduction amount is 20.5 to 250 mg / L; reacting for 10 to 40 minutes under the condition that the temperature is 2 to 85 DEG C, i.e., the method for removing the organic matters in the water through catalytic ozonization of the FeOCl is completed.

Description

technical field [0001] The invention relates to a method for removing organic matter in water. Background technique [0002] Water is the foundation of human existence and the key to sustainable social and economic development. In recent years, with the rapid growth of the global economy, water sources have been seriously polluted by organic substances, mainly including persistent organic pollutants (POPs) and endocrine disrupting substances (EDCs). [0003] POPs, also known as "refractory organic pollutants", refer to those that can exist in the natural environment for a long time, are difficult to remove through physical, chemical or biological means, are easy to accumulate in organisms at all levels through food webs, and can migrate over long distances and Deposition, natural or synthetic semi-volatile, toxic organic chemical substances that have adverse effects on human health and the environment. Its sources mainly include two aspects: on the one hand, POPs are conti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/78C02F101/30C02F103/00C02F103/16C02F103/24C02F103/28C02F103/30C02F103/34C02F101/34C02F101/38C02F101/32C02F101/36
CPCC02F1/725C02F1/78C02F2101/30C02F2101/306C02F2101/308C02F2101/327C02F2101/34C02F2101/36C02F2101/38C02F2101/40C02F2103/007C02F2103/16C02F2103/24C02F2103/28C02F2103/30C02F2103/343C02F2209/02C02F2209/03C02F2209/06
Inventor 赵雷马军肖可军马维超常鹏安文强申亚东
Owner HARBIN INST OF TECH
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