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Biological filter

A technology of biological filter and biological filter layer, which is applied in the direction of sustainable biological treatment, special treatment targets, water/sludge/sewage treatment, etc., can solve the problem of large loss of filtration head, large depth of backwash wastewater pool, backwash Problems such as large amount of waste water

Inactive Publication Date: 2018-10-09
SUEZ WATER TREATMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to redesign the filtered water, backwash wastewater discharge mode and backwash procedure of the biofilter through an improved biofilter, so as to overcome the large amount of backwash wastewater in the existing biofilter, the long flushing time, The depth of the backwash wastewater tank is large, and the loss of filtration head is large, etc.

Method used

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Embodiment Construction

[0033] Various embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that, in the drawings, the same reference numerals are assigned to components having substantially the same or similar structures and functions, and repeated descriptions about them will be omitted. The term "comprising A, B, C, etc. in sequence" only indicates the arrangement order of the included components A, B, C, etc., and does not exclude the possibility of including other components between A and B and / or between B and C . .

[0034] The accompanying drawings in this specification are schematic diagrams, which assist in explaining the concept of the present invention, and schematically represent the shapes of various parts and their interrelationships.

[0035] Below, refer to Figure 1-5 , to describe in detail preferred embodiments according to the present invention.

[0036] Figure 1-3 shows a biofilter a...

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Abstract

The invention provides a biological filter, having a filter module and a backwashing module. The filter module has a raw mater incoming valve to control feeding of raw water, and a biological filtering material layer to filter raw material; the backwashing module has a backwashing water valve to control feeding of backwashing water and a backwashing gas valve to control backwashing gas. The biological filter is characterized in that the backwashing module also has a backwashing outflow flip valve arranged at the backwashing outflow side; during backwashing of the biological filter, when the biological filter has a predetermined backwashing highest level, the backwashing outflow flip valve is opened, and therefore, waste of the backwashing process is discharged at least partly.

Description

technical field [0001] The invention relates to a biofilter for sewage treatment. Background technique [0002] At present, the treatment technologies of sewage treatment plants mainly include physical treatment and chemical treatment. These two methods have problems such as high energy consumption and limitations in the treatment of organic sewage. Biological treatment is a wastewater treatment method that converts organic pollutants in solution, colloid, and finely suspended state in wastewater into stable and harmless substances through the metabolism of microorganisms. This method has low energy consumption and is more effective in the treatment of organic wastewater. The biofilm method is the most widely used method in the biological treatment method. The treatment equipment belonging to the biofilm method includes biofilters, biological turntables, biological contact oxidation tanks, and recently developed biological fluidized beds. The aerated biological oil filter ...

Claims

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Application Information

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IPC IPC(8): C02F3/02
CPCC02F3/02C02F2303/14C02F2303/16Y02W10/10
Inventor 杨燕华
Owner SUEZ WATER TREATMENT CO LTD