Apparatus and method for processing parachlorophenol-containing waste water and recovering electric energy

A technology for p-chlorophenol and wastewater, applied in chemical instruments and methods, multi-stage water/sewage treatment, electrochemical water/sewage treatment, etc., can solve high-cost, strict equipment requirements, and biological toxicity cannot handle high-concentration wastewater etc. to achieve the effect of convenient operation and simple structure

Inactive Publication Date: 2009-04-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In water treatment, it is difficult to remove effectively by conventional physicochemical process and biological treatment
The advanced oxidation technology in the traditional method of treating chlorophenols usually requires extreme conditions of high temperature and high pressure, which makes the cost high, the operation difficult,

Method used

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  • Apparatus and method for processing parachlorophenol-containing waste water and recovering electric energy
  • Apparatus and method for processing parachlorophenol-containing waste water and recovering electric energy
  • Apparatus and method for processing parachlorophenol-containing waste water and recovering electric energy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] Treat waste water containing 60 mg / l of p-chlorophenol, containing 11.7 g / l of sodium chloride and pH=6.5. Both the anode and the cathode use carbon felt as the electrode material. Follow the steps below at 35 °C:

[0026] Start the reaction device: the sludge from the anaerobic digestion tank of the urban sewage treatment plant is used as the inoculation microorganism, mixed with the nutrient solution and injected into the anode chamber, the volume ratio of the inoculation microorganism and the nutrient solution is 1:3. The composition of the nutrient solution is as follows: KH per liter 2 PO 4 , 13.60g; CH 3 COONa, 1.00g; NaCl, 11.70g; NaOH, 2.30g; NH 4 Cl, 0.45g; MgCl 2 ·6H 2 O, 0.17g; FeCl 3 ·6H 2 O, 1.00 mg; MnCl 2 4H 2 O, 23.0 mg; CaCl 2 , 15.0 mg. Nitrogen is introduced into the anode chamber through the first aeration tube to play a stirring role. Electrolyte solution is added to the cathode chamber, and the electrolyte solution in the cathode chamb...

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Abstract

The invention discloses a device and a method for treating the wastewater containing parachlorophenol and simultaneously recovering power energy, wherein the device comprises an anode chamber and a cathode chamber which are integrated into a whole; a proton exchange membrane is arranged between the anode chamber and the cathode chamber; an anode and an aerator pipe are arranged in the anode chamber; and a cathode and an aerator pipe are arranged in the cathode chamber. In the process of treating the wastewater containing parachlorophenol, the method uses the anaerobic sludge inside the anode chamber for oxidizing the protons and electrons generated by the organic matters of nutrient fluid under anaerobic condition so as to reduce the parachlorophenol in the wastewater into phenol and recover power energy simultaneously. The device with simple structure and convenient operation can be applied at normal temperature and is applicable to the treatment of the wastewater containing organic contaminants of chlorophenols. The method has more than 90 percent and maximally 100 percent of parachlorophenol removal rate and can recover power energy in the treatment process. The device and the method can run for a long time after one-shot and can be applied to treating high concentration wastewater containing organic contaminants of chlorophenols, thus being suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to a device and method for treating waste water containing p-chlorophenol by utilizing the principle of microbial fuel cells. Realize the simultaneous recovery of electric energy in the process of treating wastewater. The utility model belongs to the technical field of environmental protection and energy recovery. Background technique [0002] Persistent organic pollutants (Persistent Organic Pollutants, POPs) are long-term residual, bioaccumulative, semi-volatile and highly toxic, and can migrate over long distances through various environmental media (atmosphere, water, organisms, etc.) Natural or synthetic organic pollutants that exist in the environment and pose serious hazards to human health and the environment. Due to their own biological toxicity, most of POPs substances have strong lipophilic and hydrophobic properties, and are easy to accumulate in organisms. When POPs substances are ingested by organisms through vario...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/46C02F1/42C02F3/30
Inventor 雷乐成张兴旺李中坚顾荷炎林君
Owner ZHEJIANG UNIV
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