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Controlled aeration of integrated fixed-film activated sludge bioreactor systems for the treatment of wastewater

一种反应器、固定膜的技术，应用在废水处理过程领域，能够解决曝气方法昂贵等问题

Inactive Publication Date: 2013-03-20
VEOLIA WATER SOLUTIONS & TECH SUPPORT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, typical aeration methods can be expensive considering the energy required to operate pumps, compressors, agitators, agitators, etc.
Minimizing energy costs is a major factor in the operation of wastewater treatment plants, and aeration costs can be a major part of total wastewater treatment plant energy costs

Method used

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  • Controlled aeration of integrated fixed-film activated sludge bioreactor systems for the treatment of wastewater
  • Controlled aeration of integrated fixed-film activated sludge bioreactor systems for the treatment of wastewater
  • Controlled aeration of integrated fixed-film activated sludge bioreactor systems for the treatment of wastewater

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Embodiment Construction

[0013] The present invention relates to wastewater treatment processes for removing pollutants or pollution from wastewater and generally making the water cleaner and less harmful to the environment. Typical pollutants in wastewater, especially municipal wastewater, include carbonaceous organic matter, organic N, and ammonia. More specifically, the present invention relates to the biological treatment of wastewater, which can be used in figure 1 The device schematically described in 100 in progress. Influent and Wastewater 30 through equipment 100 Biological treatment to produce a clarified effluent stream 36 . equipment 100 Reactor including fluid communication 10 and clarifier 20 , allowing the wastewater to flow through the reactor 10 . Usually, the reactor 10 Equipment for which biological processing takes place 100 a part of. It should be understood that more than one reactor may be used in a wastewater treatment plant, as in Figure 1A displayed in . Howev...

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Abstract

A method of biologically treating wastewater with an integrated fixed film activated sludge process. The integrated fixed film activated sludge process includes biomass suspended in mixed liquor and biomass disposed on carriers. Under certain conditions the dissolved oxygen concentration in a reactor that includes the mixed liquor, biomass suspended in the mixed liquor, and the biomass on the carriers, biological treatment is performed primarily by the biomass in the mixed liquor. This is achieved by controlling or maintaining the dissolved oxygen concentration in the reactor at a relatively low concentration. When the biomass suspended in the mixed liquor is unable to adequately biologically treat the mixed liquor, the dissolved oxygen concentration in the reactor is controlled or maintained at a relatively high concentration. This enables biomass on the carriers to contribute more to the biological treatment of the mixed liquor than when the dissolved oxygen concentration was maintained relatively low.

Description

field of invention [0001] The present invention relates to wastewater treatment processes in which aeration is used to facilitate the biological treatment of wastewater. More specifically, the present invention relates to controlling aeration in multiple operating modes of a biological wastewater treatment reactor, wherein the modes are associated with substantially different aeration levels. Background of the invention [0002] Wastewater treatment systems are designed to remove pollutants from wastewater. Over the years, many wastewater treatment systems have been designed for biological treatment. For example, biological treatment is used to remove BOD from wastewater. Another example of biological treatment includes the removal of ammonia from wastewater. This is called nitrification and denitrification. Another example of biological treatment is the removal of phosphorus from wastewater using microorganisms. [0003] More specifically, biological organisms or micro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/08C02F3/30
CPCC02F3/085C02F2209/14C02F2209/003C02F2209/001C02F3/308C02F3/006C02F2209/22Y02W10/10
Inventor R·W·迪马西莫E·班加德
Owner VEOLIA WATER SOLUTIONS & TECH SUPPORT
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