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Denitrification reactor with a fixed culture

A reactor, denitrification technology, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., to the effect of eliminating the need to provide an aeration system

Inactive Publication Date: 2006-10-11
SUEZ ENVIRONNEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this structure arises from the fact that it requires about 150-400% recirculation of the raw water stream in order to recycle the nitrates to be eliminated in order to observe a sufficient C / N ratio

Method used

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  • Denitrification reactor with a fixed culture
  • Denitrification reactor with a fixed culture
  • Denitrification reactor with a fixed culture

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Embodiment Construction

[0032] As shown in the drawings, the denitrification reactor that is the subject of the present invention is generally indicated by the number 1, and it is combined with a device in which the denitrification of the effluent and the elimination of carbon-based pollution are carried out. It is shown schematically in and is denoted by reference numeral 2. Specifically, it can be a bacterial bed or a surface washing bed, the "Biofor" aerobic biological filtration system in the rising air and water flow or a biological disc with which biomass is combined, the coil rotates around a horizontal axis and is partially immersed in The effluent to be treated.

[0033] First, the denitrification reactor includes two parallel chambers 3 and 4 for denitrification, which are separated by a partition 5, and secondly, it includes a "discharge" chamber 6, which is separated by a longitudinal partition. 7 is completely isolated from chambers 3 and 4.

[0034] The denitrification chambers 3 and 4 are ...

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Abstract

The invention relates to a reactor comprising two denitrification compartments (3, 4) provided with an organised plastic-type lining, said compartments being arranged in parallel and operating by sections or successive loads, that is alternately, one being in the filling phase while the other is in the emptying phase; a drainage compartment (6) for receiving the denitrified effluent from one or other of the denitrification compartments; a system for supplying a mixture of effluents consisting of a rotary arm (11) which alternately supplies both compartments, via the surface thereof; and means for ensuring the recirculation of the denitrified effluent from the drainage compartment (6) towards the installation (2) for the nitrification and elimination of the carbonated pollution.

Description

Technical field [0001] The present invention relates to a denitrification reactor with a fixed culture, which is combined with a device for nitrifying carbon-based pollution and eliminating such pollution. Background technique [0002] It is well known that the treatment of nitrogen in wastewater is carried out in two steps: [0003] The nitrification step, during which the ammonia nitrogen in the effluent is oxidized to nitrite, and then oxidized to nitrate. This purpose is achieved by the biochemical reaction produced by the action of autotrophic bacteria, and [0004] In the denitrification step, during this period, the nitrate nitrogen is reduced to a lower oxidation state by using a biochemical reaction produced by heterotrophic bacteria. [0005] Each of the above two steps requires observation of a certain number of conditions: [0006] -The nitrification step requires: high sludge age, because autotrophic biomass has a low growth rate, pH is between 6-8, and the optimal v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/06C02F1/00
CPCC02F1/006C02F3/06C02F3/302Y10S210/903Y02W10/10
Inventor C·热内F·维络热特
Owner SUEZ ENVIRONNEMENT
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