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Process and device for electrochemical treatment of industrial wastewater and drinking water

An industrial wastewater and electrochemical technology, applied in chemical instruments and methods, oxidized water/sewage treatment, magnetic field/electric field water/sewage treatment, etc., can solve problems such as pH value adjustment, and achieve the effect of simplifying structure and technical design

Inactive Publication Date: 2015-07-22
奥雷斯卡宁·维斯贾 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In existing solutions, wastewater preparation consists only of precipitation of solid particles in water preparation tanks without pH adjustment of the water with acids or bases, or ozonation

Method used

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  • Process and device for electrochemical treatment of industrial wastewater and drinking water
  • Process and device for electrochemical treatment of industrial wastewater and drinking water
  • Process and device for electrochemical treatment of industrial wastewater and drinking water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0185] Example 1 - Treatment of Wastewater Generated After Pressure Washing of a Ship

[0186] In the treatment of waste water produced after pressure washing of ships coated with antifouling agents, devices for electrochemical treatment of industrial waste water are used. The pressure pump 2 pumps the collected waste water 1 into a water preparation tank with a total volume of 3000 L, where, during the first stage of treatment, it is kept standing still for T m = 60 min. Coarse dirt particles, sand and undissolved paint chips separate at the bottom of the water preparation tank.

[0187] After settling, the water pump 7 transfers the water from the water preparation tank 3 to the 220 l volume reactor vessel 9, where, at T 1 Ozonation and mixing of water and ozone was initiated for a duration of =30 min. Ozone 13 from the ozone generator 12 is pumped to the bottom of the reactor vessel at a flow rate of Q=5 l / min, whereby the organics are oxidized while mixing in the reacto...

Embodiment 2

[0206] Embodiment 2-for the treatment of the wastewater produced in the electroplating process

[0207] The electrochemical treatment unit for industrial wastewater is used to treat the wastewater generated during the electroplating process.

[0208] From a neutral reservoir, waste water 1 is pumped by means of a pressure pump 2 into a reactor vessel 28 of volume 2201. The water level in the reaction vessel 28 is maintained at a set limit by means of a liquid level regulator 34, and when the water in the reactor vessel 28 reaches the design water level, the steel reactor electrode group R2 is turned on and has P 1 =0.6552m 2 total surface. The reactor electrode set R2 is at the duration T 1 = Intrinsic U within 15min 1 = 12V and I 1 Operation under =45A forms the electrochemical corrosion of the anode, in which Fe 2+ Ions are released into the water and reduce chromium(VI) to chromium(III), while Fe 2+ Oxidized to Fe 3+ . OH formed during the water reduction reaction ...

Embodiment 3

[0242] Example 3 - Preparation of drinking water

[0243] Groundwater from the borehole, loaded with heavy metals, arsenic, organics, and ammonia, is treated with an electrochemical treatment facility.

[0244] The raw water 1 from the receiving tank is pumped by means of a pressure pump 2 into a reactor vessel 28 with a volume of 220 1. The water level in the reactor vessel 28 is maintained at the design level by the liquid level regulator 34, and when the water in the reactor vessel 28 reaches the desired value, the steel reactor electrode set R2 is opened and it has a total surface P 1 =0.6552m 2 . Reactor electrode group R2 in U 1 = 12V and I 1 = Maintain operation T at 50A 1 =15min, which leads to electrochemical corrosion of the anode, while Fe 2+ Ions are released into the water, performing a reduction of chromium(VI) to chromium(III), and in parallel Fe 2+ Oxidized to Fe 3+ .

[0245] Generated Fe(OH) 3 This leads to colloidal instability, which creates condi...

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Abstract

Subject matter of the invention is the procedure and plant for industrial wastewater and / or drinking water treatment by means of electrochemical methods and advanced oxidation processes. The preparatory phase of gravitational sedimentation is followed by main treatment consisting of electrocoagulation, electrooxidation and electroflotation through action of metal electrode sets made of inox, steel and aluminium respectively, with parallel disinfection / oxidation with ozone, UV irradiation and ultrasonic treatment, as well as recirculation in the electromagnetic field. At the end of the main treatment, the mixture of floccule and water is subject to coagulation / flocculation by electrochemically generated steel and aluminium floccule with slow infusion of ozone. The next phase is separation of sediment from clean water which is discharged through sand and activated charcoal filters for the purpose of removal of light floating floccule in the collection tank. If required, the water is subject to oxidation with simultaneous action of UV irradiation and ozone for the purpose of final destruction of organic matter and ammonia, and potential residues of microbiological contamination.

Description

technical field [0001] The invention relates to a method and a device for treating industrial waste water by an electrochemical method. According to the International Patent Classification (IPC), the device is classified as: C02F 1 / 46 - Electrochemical method; i.e. C02F 1 / 463 Electrocoagulation; C02F 1 / 465 Electroflotation; C02F 1 / 467 Electrochemical disinfection; C02F 1 / 32 Ultraviolet light; C02F 1 / 36 Ultrasonic vibration; C02F 1 / 48 Magnetic or electric fields; C02F 1 / 52 Chemical or physical water treatment by flocculation or precipitation of suspended pollutants; C02F 1 / 78 Ozone oxidation. [0002] The electrochemical treatment of industrial wastewater is a technical problem solved by various methods and equipment. This solution describes an industrial wastewater treatment plant utilizing electrochemical methods, namely electrocoagulation, electroflotation, electrochemical disinfection, UV (ultraviolet) disinfection, electromagnetic and ultrasonic treatment as well as floc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78C02F1/32C02F1/463C02F1/465C02F1/467C02F1/36C02F1/00C02F1/28C02F1/48C02F1/52C02F9/00B01D21/00
CPCC02F1/484C02F1/52C02F1/283B01D21/00Y02W10/37C02F1/32C02F1/465C02F2103/04C02F2209/42C02F2001/46133C02F2101/22C02F2101/103C02F1/36C02F2201/46105C02F1/001C02F2209/005C02F2201/4617C02F2101/30C02F2303/04C02F2001/007C02F1/4672C02F2201/46175C02F1/78C02F2101/20C02F1/325C02F2201/3225C02F1/463C02F9/00C02F1/467C02F1/00C02F1/28
Inventor 奥雷斯卡宁·维斯贾米库里克·内纳德佩特雅克·丹尼斯
Owner 奥雷斯卡宁·维斯贾
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