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An integrated electrochemical forward osmosis reactor for the removal of emerging organic pollutants in sewage

An organic pollutant and electrochemical technology, which is applied in the field of environmental engineering, can solve the problems of treating forward osmosis concentrate with electrochemical oxidation technology, and achieve the effect of promoting energy saving and consumption reduction, sustainable development, convenient operation and flexible operation

Inactive Publication Date: 2016-04-13
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there is no research report on the treatment of forward osmosis concentrate by electrochemical oxidation technology

Method used

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  • An integrated electrochemical forward osmosis reactor for the removal of emerging organic pollutants in sewage
  • An integrated electrochemical forward osmosis reactor for the removal of emerging organic pollutants in sewage

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0027] The integrated electrochemical forward osmosis reactor can be used as an advanced treatment device after the secondary treatment unit of an urban sewage treatment plant. The concentrations of four emerging organic pollutants, norfloxacin, trimethoprim, sulfamethoxazole and roxithromycin, ranged from 134 to 1311ngL -1 The secondary effluent within the range is placed in the raw material liquid storage tank 8, and is transported to the raw material liquid pool 12 of the integrated electrochemical forward osmosis reactor 11 by the raw material liquid delivery pump 10, and passes through the gap between the drawn liquid and the raw material liquid in the drawn liquid pool 13. Due to the effect of the osmotic pressure difference, the water molecules in the raw material liquid spontaneously enter into th...

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Abstract

The invention provides an integrated electrochemical forward osmosis reactor for removing new organic pollutants in sewage, belonging to the technical field of waste water treatment in environment engineering. According to the integrated electrochemical forward osmosis reactor, an electrochemical electrolysis electrode is coupled to one side of a feed solution pool of a forward osmosis reaction pool, a stainless steel mesh cathode and a titanium mesh iridium-tantalum-tin coated activity layer anode are respectively arranged in the middle of the feed solution pool and a position of the pool wall away from a forward osmosis film, and all components are sealed through a silica gel washer bed. The integrated electrochemical forward osmosis reactor can be used as a deep treatment device behind a secondary treatment unit of an urban sewage treatment plant, the interception of new organic pollutants in secondary effluent water and the degradation of pollutants in concentrated liquor can be synchronously completed, and the problem of subsequent treatment of the forward osmosis concentrated liquor can be solved. In addition, the effluent water of the integrated electrochemical forward osmosis reactor can be recycled. The integrated electrochemical forward osmosis reactor has important significance on promotion of water ecology health and drinking water safety, and remitting the problem of fresh water resource shortage.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and relates to sewage treatment and reclaimed water reuse technology, in particular to an integrated electrochemical forward osmosis reactor for removing emerging organic pollutants in sewage, which is used to treat emerging organic pollutants in urban sewage that are difficult to biodegrade. The removal of organic pollutants, at the same time, the reactor effluent can be recycled. Background technique [0002] The shortage of water resources has risen to a global crisis, and it is also an important constraint on the sustainable development of my country's society and economy. Direct reuse of sewage as drinking water is one of the important ways to solve the problem of water shortage. [0003] Forward osmosis (FO) is a membrane separation process driven only by osmotic pressure. Water molecules spontaneously permeate through the semipermeable membrane from the raw material part ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/44C02F1/467
CPCC02F1/445C02F1/467C02F1/4698C02F2101/30C02F2201/002C02F2201/46
Inventor 张捍民刘鹏霄
Owner DALIAN UNIV OF TECH
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