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Device for treating organic wastewater by ozone and active carbon and method therefor

A technology of organic wastewater and activated carbon, applied in the field of environmental technology and water treatment, can solve the problems of frequent regeneration and limited adsorption capacity, and achieve the effect of reducing treatment cost, simple method and improving utilization rate

Inactive Publication Date: 2006-12-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Activated carbon adsorption is suitable for all kinds of high and low concentration wastewater, but the adsorption capacity is also limited. In the adsorption of high concentration wastewater, it is often saturated quickly and requires frequent regeneration

Method used

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  • Device for treating organic wastewater by ozone and active carbon and method therefor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The wastewater object is the effluent produced by a fine chemical factory. The water quality is complex. The main organic pollutants are adiponitrile and phenolic compounds after analysis. The COD concentration of the wastewater is 10911mg / L, the initial pH is 4.4, and the ozone inlet flow rate is 60L / h. The gas phase ozone concentration is 41mg / L, the water sample is 500mL for a single treatment, and 30g of activated carbon is added. After 60 minutes of reaction, the COD removal rate is 66.9%. The removal rates of ozone oxidation and activated carbon adsorption are 13.6% and 56.9%, respectively. Activated carbon reacts water COD to a level of 3600mg / L, and the ozone utilization efficiency is 0.58mgCOD / mgO when ozone is oxidized alone 3 Increased to 1.3mg COD / mg O 3 , Ozone utilization efficiency increased by 55%. Under alkaline conditions, the treatment effect is better. Adjust the pH of the wastewater to 10.0 and keep other reaction conditions unchanged. After 60 min...

Embodiment 2

[0017] The treatment object is 1g / L nitrophenol wastewater, the initial reaction pH=4.5, the ozone inlet flow rate is 60L / h, the gas phase ozone concentration is 41mg / L, and the water sample is 500mL for a single treatment, and 10g of activated carbon is added, and the reaction takes 60min. The removal rate of nitrophenol was 93.2%, the removal rate of COD was 85.4%, and the COD of the effluent was reduced from 1780mg / L in the influent to 260mg / L. The test data and results are shown in Table 1.

[0018] Sewage

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Abstract

The invention discloses an organic waste water disposing device through ozone or activated carbon, which comprises the following parts: outer cylinder, circulating cylinder with the same shaft of outer cylinder, inlet on the bottom of outer cylinder, aerating device on the bottom of inner cylinder. The disposing method comprises the following steps: pumping organic waste water in the device from inlet; putting grain-shaped activated carbon in the device; inputting ozone gas; circulating to flow the activated carbon in the space of inner cylinder and outer cylinder pushed by ozone gas.

Description

technical field [0001] The invention relates to an ozone / activated carbon treatment device and method for organic wastewater, belonging to the fields of environmental technology and water treatment. Background technique [0002] In view of the large amount of industrial wastewater discharged in the current industrial production, it has various types, complex components, high concentration of chemical oxygen demand (COD), poor biodegradability, poisonous and harmful characteristics, and it is difficult to effectively treat it with conventional physicochemical or biochemical treatment methods. Control and Governance. Therefore, oxidation technology has become the main method to deal with refractory biodegradable and toxic and harmful industrial organic wastewater. [0003] Oxidation technology uses various oxidants to attack the macromolecular organic matter in wastewater, so that the organic matter in the water can be oxidized to achieve the purpose of purifying water qualit...

Claims

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Application Information

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IPC IPC(8): C02F1/78C02F1/28
Inventor 雷乐成周明华古励
Owner ZHEJIANG UNIV
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