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Microorganism regeneration method for treating granular active carbon achieving saturated nonyl phenol adsorption state

A granular activated carbon and activated carbon technology, applied in the field of environmental engineering, can solve the problems of unstable product quality, long time consumption, high energy consumption, etc.

Inactive Publication Date: 2015-08-05
SHANGHAI UNIV
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Problems solved by technology

Among many methods, thermal regeneration is the most mature application, but it takes a long time, consumes a lot of energy, and the product quality is not stable

Method used

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Embodiment Construction

[0012] The purchased fresh activated carbon is pretreated, filtered and dried for later use. Add the obtained pretreated activated carbon into ethanol aqueous solution with a nonylphenol concentration of 4 mg / L, control the mass concentration of activated carbon at about 0.1 g / L, and absorb for 12 h; filter out the activated carbon that has fully adsorbed nonylphenol, and weigh 0.05 g was added to the inorganic salt culture solution lacking carbon source; its inorganic salt component was NH 4 Cl 2.5 g, NaH 2 PO 4 5.0 g, K 2 HPO 4 2.5 g, MgSO 4 ?7H 2 O 0.5g, FeCl 3 ?6H 2 O 0.03 g, MnSO 4 ?4H 2 O 0.01 g, CaCl 2 ?2H 2 O 0.03 g; Dipure water to 1000 ml, pH adjusted to about 7.0. Add a microbial solution that degrades nonylphenol with a mass of 10% of the mass of activated carbon, and regenerate for 24 hours; the temperature of the solution is controlled at 25 °C; after regeneration, filter out the regenerated activated carbon, wash with dipure water, and then dehydra...

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Abstract

The present invention relates to a microorganism regeneration method for treating granular active carbon achieving the saturated nonyl phenol adsorption state, and belongs to the field of environmental engineering. The method comprises: 1, adding pre-treated granular active carbon to an aqueous solution with a nonyl phenol concentration of 4 mg / L, and adsorbing for 12 h to make the active carbon achieve adsorption saturation, wherein the active carbon mass concentration is 0.1 g / L; 2, filtering out the active carbon achieving the adsorption saturation in the step 1, weighing 0.05 g of the active carbon, adding to a carbon source-absent inorganic culture liquid, adding a microorganism solution with the amount of 10% of the mass of the active carbon and for degrading the nonyl phenol, and regenerating for 24 h, wherein the microorganism belongs to Pseudomonadaceae, the temperature is controlled at about 25 DEG C, and the pH value of the system is 5.0-8.0; 3, filtering out the active carbon mixing liquid in the step 2, and washing the active carbon with di-distilled water; and 4, dewastering and drying the washed active carbon so as to obtain the regenerated active carbon. The method of the present invention has characteristics of low cost, no pollution, simple operation, and good active carbon regeneration effect achieving, and is suitable for degradation of low-content and large-harm organic matters in water.

Description

technical field [0001] The invention relates to a method for microorganisms to regenerate activated carbon that absorbs saturated nonylphenol, which degrades trace and harmful organic substances in water bodies, and belongs to the field of environmental engineering. Background technique [0002] Activated carbon is an adsorbent made of carbon-based substances as raw materials. Its main features are: developed microporous structure, large specific surface area (accounting for more than 90% of the total surface area), large adsorption capacity, and good adsorption performance. It is widely used to remove organic pollutants that are difficult to effectively remove by conventional treatment. It has huge application space in chemical industry, environmental protection, food and pharmaceutical, electrode materials and other fields. However, after the adsorption of activated carbon is saturated, the regeneration equipment is complicated, and it is difficult to regenerate it on the...

Claims

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Application Information

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IPC IPC(8): B01J20/34B01J20/20C01B31/08
Inventor 何池全吴健忠孙潇凯庄再韦周天波杨学城孙乔张琦
Owner SHANGHAI UNIV
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