A Synchronous Denitrification and Phosphorus Removal and Suspended Solids Removal Process

A technology for simultaneous denitrification and phosphorus removal, and suspended solids. It is used in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. and other problems, to achieve the effect of high filtration rate, small footprint and large hydraulic load

Active Publication Date: 2017-06-27
SUEZ WATER TREATMENT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The DN denitrification filter has excellent performance in nitrogen removal, but the concentration of phosphorus and suspended solids in the effluent is high, and it cannot be used in areas where the sewage discharge standards are stricter (such as TP<0.5mg / L, SS<5mg / L). effective satisfaction

Method used

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  • A Synchronous Denitrification and Phosphorus Removal and Suspended Solids Removal Process
  • A Synchronous Denitrification and Phosphorus Removal and Suspended Solids Removal Process

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the content described here is only for illustration and explanation of the present invention, and is not intended to limit the present invention.

[0030] The present invention is a downward flow biological filter, which is applied to sewage treatment. More specifically, the present invention is a downward flow system relying on gravity filtration, using a heavy filter material, the filter bed is completely submerged in water, and simultaneously achieves the functions of effective denitrification, phosphorus removal and removal of suspended solids. This biological filter process can be regarded as advanced treatment, used after the secondary treatment of sewage.

[0031] exist figure 1 , figure 2 In the shown embodiment, a single V-shaped biofilter is composed of the following components: a rectangular water tank, V-shaped water inlet an...

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Abstract

The invention discloses a process for synchronously removing nitrogen and phosphorus and removing suspended solids. During the filtration process, the raw water is filtered downward under the action of gravity, and passes through a biological filter material layer, a fine filter layer, a supporting layer and a filter head in sequence, and is formed by Bottom discharge; during the process of nitrogen removal, the water inlet is closed, the liquid level is lowered, and then the backwash water is distributed through the filter head and then enters the biological filter material layer upwards to drive out the accumulated nitrogen bubbles in the filter material; the backwash process is carried out by the filter head After uniform air distribution and water distribution, it enters the biological filter material layer and cleans the biological filter tank. The present invention has the advantages of large hydraulic load, small footprint, good nitrogen and phosphorus removal effects, good suspension removal effect, good effluent water quality and simple operation and maintenance. advantage.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a process for synchronous denitrification, dephosphorization and removal of suspended solids suitable for advanced treatment of sewage. Background technique [0002] Typical sewage water quality generally includes organic matter, nitrogen, phosphorus and suspended solids. With the increasing environmental protection norms and standards, before the treated water is reused or discharged into the environmental water body, it is necessary to effectively remove the nitrogen, phosphorus and suspended solids in the water body, especially to avoid the treated water discharged into the environmental water body Excessive nitrogen and phosphorus content causes eutrophication of the water body, and the nitrogen and phosphorus content has been strictly limited in the sewage treatment discharge standard. [0003] In terms of removing suspended solids and phosphorus, the V-type filter has a goo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 裴瀚迪陆子维
Owner SUEZ WATER TREATMENT CO LTD
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