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Method of treating oil field waste water by electric-multiphase catalytic reaction and its special equipment

A technology for heterogeneous catalysis and oilfield wastewater, applied in electrochemical water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., to achieve mild reaction conditions, high treatment effect, and simple equipment

Inactive Publication Date: 2003-07-16
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These oilfield wastewaters are refractory organic wastewaters, which are difficult to be treated by common methods such as biochemistry; biodegradation is the most commonly used process for treating wastewater, but industrial wastewater such as dinitrophenol wastewater, fertilizer factory wastewater, and cutting fluid wastewater is difficult to use. Biodegradable methods must be used to deal with new technologies and new processes

Method used

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  • Method of treating oil field waste water by electric-multiphase catalytic reaction and its special equipment
  • Method of treating oil field waste water by electric-multiphase catalytic reaction and its special equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] M / SiO 2 Catalyst preparation:

[0020] Take 0.18mol / L of Fe(NO 3 ) 3 Solution 100ml, 100 grams of 40 ~ 60 mesh SiO 2 The particles were poured into the impregnating solution and stirred, left to stand for 10 hours, dried at 110°C for 2 hours, then calcined at 400°C for 3 hours, and naturally cooled to room temperature to prepare Catalyst A. The weight of metal components in catalyst A is: Fe: 1%, the rest is carrier SiO 2 .

Embodiment 2

[0022] M / Al 2 o 3 and preparation of M / zeolite catalyst:

[0023] Take Al 2 o 3 Or molecular sieve zeolite replaces SiO in embodiment 1 2 Particle, all the other are identical with embodiment 1, are prepared to contain Fe: 1% M / Al 2 o 3 Catalyst B or M / zeolite type catalyst C containing Fe: 1%.

Embodiment 3

[0025] Preparation of M / activated carbon catalyst:

[0026] ①Replace SiO in Example 1 with mesoporous activated carbon 2 Powder, and roasting under nitrogen atmosphere, all the other are identical with embodiment 1, are prepared into containing Fe: 1% M / activated carbon type catalyst D1.

[0027] ②Replace SiO in Example 1 with mesoporous activated carbon 2 Powder, and in the impregnating solution in embodiment 1, add the lanthanum nitrate solution 10ml of 0.18mol / L, and in N 2 Roasting under atmosphere, all the other conditions and steps are with embodiment 1. The M / activated carbon catalyst D2 was prepared as La0.2%-Fe1%.

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PUM

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Abstract

A process for treating the waste water in oil field by electricity-multi-phase catalytic reaction features that under the existance of external electric field, the organic pollutants in the said waste water are catalytically oxidized by the surface of catalyst. The catalyst is composed of the active components chosen from one or several oxides of Fe, Co, NI, Mn, Cu, Ti, W and Pb and the carrier chosen from SiO2, Al2O3, zeolite molecular sieve and activated carbon. Among the mentioned catalyst, one or several oxides of rare earth metals as auxiliaries may be added. The said catalyst is made upthrough impregnating, oven-drying and sintering; and it can effectively treat oil-contained waste water as well as dinitrophenol waste water, fertilizer plant waste water, cutting liquid waste water,etc.. Its advantages are high effect and low cost.

Description

technical field [0001] The invention relates to industrial waste water treatment, in particular to a method and a special device for treating oil field waste water by electric-heterogeneous catalytic reaction. Background technique [0002] Oil extraction wastewater (oily wastewater generated during oil field exploitation) mainly comes from different sections such as drilling, oil extraction, well washing, and downhole operations. The wastewater discharged from these sections contains petroleum, COD Cr , volatile phenol, sulfide, SS and other pollutants. These oilfield wastewaters are refractory organic wastewaters, which are difficult to be treated by common methods such as biochemistry; biodegradation is the most commonly used process for treating wastewater, but industrial wastewater such as dinitrophenol wastewater, fertilizer factory wastewater, and cutting fluid wastewater is difficult to use. Biodegradable methods must be used to deal with new technologies and new...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/00C02F1/46C02F1/461
Inventor 杨旭孙承林谢茂松徐桂芬王贤高
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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