Apparatus and method for electrochemical treatment of wastewater

A technology for treating wastewater and wastewater, which is applied in chemical instruments and methods, electrochemical water/sewage treatment, water/sewage treatment equipment, etc., and can solve problems such as inability to obtain and use municipal wastewater treatment systems

Inactive Publication Date: 2012-11-14
PROTERRGO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are many situations where small settlements, businesses and groups do not have access to (or cannot use for various reasons) municipal wastewater treatment systems

Method used

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  • Apparatus and method for electrochemical treatment of wastewater
  • Apparatus and method for electrochemical treatment of wastewater
  • Apparatus and method for electrochemical treatment of wastewater

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0031] figure 1 Is a schematic representation of the WETT process including the individual electrochemical processing units, the main on-line sensors where applicable and the recycle of iron oxide to the previous electrochemical processing unit (shown as dotted lines). figure 1A pretreatment unit for removal of bulk solids or free oil is not shown, which may be required depending on the concentration of bulk solids and oil in the wastewater to be treated. Well known equipment such as grates, strainers and oil coalescers can be used to accomplish this task. The pretreatment unit may also be a mechanical device for reducing the size of bulk solids such as a grinder.

[0032] WETT units that may be involved in wastewater purification processes are listed below as well as figure 1 middle. In a preferred embodiment, the process consists of a series of 4 electrochemical units:

[0033] 1. Electrocoagulation (EC)

[0034] 2. Electric flotation (EF)

[0035] 3. Electrolytic Oxid...

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PUM

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Abstract

The wastewater treatment apparatus of present invention has an electro-coagulation unit for removing contaminants with at least one anode and at least one cathode and an electro-oxidation unit for oxidizing contaminants with at least one anode and at least one cathode wherein oxidants are electrochemically generated. Based on the type of wastewater, the apparatus can have an electro-flotation unit between the electro-coagulation unit and the electro-oxidation unit. The apparatus also has an oxidant removal unit which can have a metal ion-liberating electrode for reacting with and removing residual oxidants. In some cases, portions of effluent from the oxidant removal unit can be recirculated to the electro-coagulation unit for increased efficiency.

Description

technical field [0001] The invention relates to the field of wastewater treatment. More specifically, it relates to devices and methods for electrochemically purifying wastewater. Background of the invention [0002] There are many situations where small settlements, businesses and groups do not have access (or for various reasons cannot use) a municipal wastewater treatment system. Examples include isolated settlements, ships and marine platforms, islets, research or military outposts, remote agricultural or industrial operations, and point sources of wastewater. [0003] These various settlements generate large volumes of liquid waste including gray water, black water, sewage, oily water and any other wastewater contaminated with pathogens, organic and inorganic materials, dissolved or suspended solids. [0004] Among these, small residential areas are ships that generate large wastewater streams. These streams include bilge water from engine rooms, black water from lav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/469C02F1/46C02F1/463C02F1/465
CPCC02F1/465C02F2209/11C02F2103/005C02F1/4674C02F1/32C02F2103/08C02F2103/008C02F2209/02C02F2201/46135C02F2001/46138C02F2103/002C02F1/463C02F9/00C02F2209/04C02F2209/245C02F2201/46175C02F2209/06C02F2209/29C02F2209/40C02F2201/4614C02F2209/05C02F1/46C02F1/469C02F1/76
Inventor N·A·波瑞尔V·勒维勒
Owner PROTERRGO
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