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Wastewater treatment method and electric bridge reactor thereof

A wastewater treatment and reactor technology, applied in the direction of electrochemical water/sewage treatment, etc., to achieve the effect of reducing preferential discharge, high efficiency, and increasing conductivity

Inactive Publication Date: 2012-08-29
WUHAN COMEON ENVIRONMENT ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] At present, there have been many methods reported on oil-water separation and COD treatment technology, but there is still a high-efficiency and low-consumption method for sewage treatment in oilfields (referring to injecting high-molecular polymer aqueous solution into the capillary of the underground oil layer to drive oil out). No report

Method used

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  • Wastewater treatment method and electric bridge reactor thereof
  • Wastewater treatment method and electric bridge reactor thereof
  • Wastewater treatment method and electric bridge reactor thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: COD treatment of landfill leachate in Wuhan *** landfill

[0039] Sampling time: March 12, 2010

[0040] Appearance of incoming sample: black liquid, very smelly

[0041] PH value: 5.0

[0042] Equipment: bridge reactor,

[0043] Chinese patent CN101774658A discloses cascaded highly dispersed horizontal ammonia removal towers.

[0044] High frequency DC power supply

[0045] Test process:

[0046] Water sample—in the horizontal tower through four stages of ammonia removal—after removal of ammonia, water sample filtration——use bridge reactor to remove COD.

[0047] Test results:

[0048] Ammonia nitrogen content in raw water: 938mg / l Ammonia nitrogen content after ammonia removal: 25mg / l

[0049]COD content of raw water: 1360mg / l COD content after removing ammonia nitrogen: 870mg / l

[0050] After electrochemical treatment [10.04.14]:

[0051] Ammonia nitrogen: not detected; COD content: 56mg / l; COD removal rate: 95%

[0052] Experimental data:

[00...

Embodiment 2

[0058] Example 2: Deep degreasing and COD removal treatment of effluent after filtration of polymer injection sewage

[0059] Sampling time: October 20, 2010

[0060] Sample No.: Oil Waste No. 2010-01

[0061] Appearance of incoming sample: milky liquid with crude oil smell;

[0062] Raw water sample index: oil content: 40mg / l

[0063] COD value: 300mg / l

[0064] Test equipment: 1. Bridge reactor, including the main body. The main body is provided with water inlet, air intake pipe and drain outlet. The main body is equipped with a cathode and an anode. A ceramic bridge with holes is installed between the cathode and the anode. Scattered with granular fillers: activated carbon and aluminum, the bottom of the main body is equipped with numerous blowing holes, which communicate with the micro blower through the air intake pipe.

[0065] 2. One high-frequency DC power supply

[0066] Test basis: 1. Oil content: Determination of oil content in oilfield wastewater in "Recommend...

Embodiment 3

[0080] Example 3: Deep degreasing and COD removal treatment of effluent after filtration of polymer injection sewage

[0081] Sampling time: October 20, 2010

[0082] Sample No.: Oil Waste No. 2010-02

[0083] Appearance of incoming sample: milky liquid with crude oil smell;

[0084] Raw water sample indicators: oil content: 45mg / l

[0085] COD value: 398mg / l

[0086] Test equipment: 1. Bridge reactor, including the main body. The main body is provided with water inlet, air inlet pipe and drain outlet. The main body is equipped with a cathode and an anode. A glass plate bridge with holes is installed between the cathode and the anode. It is equipped with flake filling: coke and aluminum, and the bottom of the main body is equipped with numerous blowing holes, which are connected with the micro blower through the air intake pipe.

[0087] 2. One high-frequency DC power supply

[0088] Test basis: 1. Oil content: Determination of oil content in oilfield wastewat...

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Abstract

The invention relates to a wastewater treatment method and an electric bridge reactor thereof. The invention is characterized in that a non-conducting bridge is arranged between a cathode and an anode of an electrochemical reactor, scattered fillers are arranged on the bridge, wastewater solution to be treated is fed into the electrochemical reactor to be treated, and the scattered fillers and the treated wastewater form a micro-battery; and the fillers can be amphoteric metal, coke, activated carbon, graphite or bamboo charcoal. According to the invention, the bridge, the fillers and the wastewater solution form an electric bridge, and the electric bridge combine with the electrodes to form an electric bridge reactor. The wastewater treatment method can demulsify the sewage from polymer injection in an oil field and treat the demulsified wastewater to reduce the COD (chemical oxygen demand) and remove impurities; in addition, the method can take full advantage of the oxidation and reduction functions of the electrodes to decompose pollutants. Negative charges on the surfaces of colloidal particles are electrically neutralized by the gelatinous substances generated by ions dissolved from the anode, the electric double layer is compressed, and the zeta potential is reduced, thereby achieving the effects of colloid demulsification, rapid oil-water separation and COD treatment.

Description

technical field [0001] The present invention relates to the oil-water separation in the field of environmental protection engineering, especially the oil-water separation of oil field polymer injection wastewater, and the treatment technology that COD and other impurities can be used in bridge reactors; similarly, it also relates to petrochemical, steel industry wastewater, food Treatment of waste water in production and processing industries, landfill leachate, etc.; bridge reactors can be used in enterprises and industries that require electrochemical degreasing and COD reduction. Background technique [0002] Reducing energy consumption is the key to wastewater treatment. However, in the face of the high cost of COD produced by polymers, the normal production of many enterprises has been seriously affected. [0003] In oilfield wastewater, crude oil mainly exists in three forms, and the treatment methods for different forms are different, see Table 1 for details. [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/46
Inventor 胡治邠文志敏聂松刘浩肖芬
Owner WUHAN COMEON ENVIRONMENT ENG