System for treating sewage containing nonylphenol polyoxyethylene ether and metabolin

A technology of nonylphenol polyoxyethylene ether and metabolites, applied in the field of bio-physicochemical systems

Inactive Publication Date: 2010-12-01
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the purposes of the present invention is to overcome the problems faced by the existing facilities for treating sewage containing nonylphenol polyoxyethylene ether and metabolites; to combine biotechnology with solid-liquid separation, filtration and chemi...

Method used

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  • System for treating sewage containing nonylphenol polyoxyethylene ether and metabolin
  • System for treating sewage containing nonylphenol polyoxyethylene ether and metabolin
  • System for treating sewage containing nonylphenol polyoxyethylene ether and metabolin

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Embodiment 1

[0044] See figure 1 . The system of the invention comprises a solid-liquid separator, anoxic-aerobic integrated bioreactor, a filter and an ozone oxidation reaction device.

[0045] The water outlet of the solid-liquid separator is connected with the water inlet of the anoxic-aerobic integrated bioreactor through the pipeline, and the water outlet of the anoxic-aerobic integrated bioreactor is connected with the water inlet of the filter through the pipeline The water outlet of the filter is connected with the water inlet of the ozone oxidation device through a pipeline.

[0046] See figure 2 . The solid-liquid separator is substantially an open cone-shaped container, and the water inlet pipe 1 extends into the container, and a water outlet is provided on the wall of the upper part of the container, and a water outlet pipe 4 is further installed at the water outlet; An overflow weir 3 is opened on the upper container wall, and a mud discharge port is opened at the bottom ...

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Abstract

The invention relates to a biological-physical system for treating sewage containing nonylphenol polyoxyethylene ether and metabolin and a sewage treating method. The system comprises the following structure that a water outlet of a solid-liquid separator is communicated with a water inlet of an anaerobic-aerobic integrated bioreactor through a pipeline; a water outlet of the anaerobic-aerobic integrated bioreactor is communicated with a water inlet of a filter through a pipeline; and a water outlet of the filter is communicated with a water inlet of an ozone oxidation device through a pipeline. The solid-liquid separator is used for separating inorganic solid substances in the sewage; the anaerobic-aerobic integrated bioreactor is used for removing organic pollutants, ammonia nitrogen, nonylphenol polyoxyethylene ether, metabolin and the like in the sewage; the filter is used for removing suspension solids in effluent of a biological unit; and an ozone oxidation unit is used for removing nonylphenol phenol-ethoxylate resided in the water. The system has the characteristics of simple operation and maintenance, high efficiency for removing pollutants, and the like, and avoids the discharge of the nonylphenol polyoxyethylene ether and metabolin thereof with estrogen effect to the natural world.

Description

technical field [0001] The invention belongs to a sewage treatment system, in particular to a biological-physicochemical system for treating sewage containing nonylphenol polyoxyethylene ether and its metabolites, and using the bio-physical system to treat sewage containing nonylphenol polyoxyethylene ether and its metabolites processing method. Background technique [0002] Nonylphenol ethoxylates (NPnEOs), as a kind of surfactant with excellent performance, are widely used in industry, agriculture and civil fields, some of which enter the urban sewer system with sewage after use. In the biological treatment unit of municipal sewage treatment plants, NPnEOs can be degraded by microorganisms to form metabolites such as nonylphenol (NP), short-chain NPEOs, and nonylphenol ethoxylates (NPECs). However, these metabolites are refractory substances and have stronger bioaccumulation and estrogenic effects than the parent compound. At present, there is no treatment process for se...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30C02F1/78C02F101/34
Inventor 刘俊新连静
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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