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Synchronous nitrification and denitrification filter tank

A technology of denitrification filter and synchronous nitrification, which is applied in the field of synchronous nitrification and denitrification filter, can solve the problems of large occupied area and achieve the effects of small occupied area, good filtering environment and less sand run-off

Pending Publication Date: 2017-12-05
XIAMEN BAST CLEAN ENVIRONMENTAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The biggest defect of these old-fashioned filters is: there are huge and complicated backwashing systems, and the problems such as large footprint

Method used

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  • Synchronous nitrification and denitrification filter tank
  • Synchronous nitrification and denitrification filter tank
  • Synchronous nitrification and denitrification filter tank

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Embodiment Construction

[0047] Below by embodiment the content of the present invention is specified:

[0048] Please check Figure 1 to Figure 5 , a simultaneous nitrification and denitrification filter, comprising:

[0049] Pool body 10, the top of the pool body 10 is provided with an outlet weir 11, the preferred triangular weir of the outlet weir 11, the water outlet of the outlet weir 11 is controlled by a digital valve; Have a certain included angle, preferably 55°;

[0050] Filter material bed 20, filter material is for example sand; Filter material bed 20 is located in the tank body 10, and the top of filter material bed 20 is located below the liquid level in the tank body 10;

[0051] The water inlet system 30 includes a first water inlet outer pipe 31 and a water inlet water distributor that communicate with each other; the first water inlet outer pipe 31 is connected to a sewage water source, and the first water inlet outer pipe 31 is provided with a Venturi jet 311, the Venturi jet 31...

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Abstract

The invention discloses a synchronous nitrification and denitrification filter tank, which comprises a tank. The top of a filter material bed is positioned below the liquid level in the tank. A water inlet system is provided with a Venturi ejector. A sand washing system comprises several sand washers. At least part of the sand washer extends to below the liquid level in the tank and is positioned above the filter material bed. A gas stripping system is arranged outside the tank. Upper and lower ends of the gas stripping system are respectively communicated with the sand washing system and the bottom of the tank. After entering the filter material bed, sewage undergoes denitrification, nitrification and filtration. A filter material continuously moves down to the bottom of the tank during the sewage treatment process and then rises to the sand washing system to be cleaned; and then, the filter material drops down to the top of the filter material bed and then moves down in the tank to treat sewage. Thus, cyclic regeneration of the filter material and continuous treatment of sewage are realized. The synchronous nitrification and denitrification filter tank has advantages of low manufacture cost and good effluent quality, and is convenient to repair and maintain.

Description

technical field [0001] The invention belongs to the technical field of filter tanks for filtration in sewage treatment, and in particular relates to a synchronous nitrification and denitrification filter tank. Background technique [0002] Generally, filters can be divided into pressure filters and gravity filters. Gravity filter can be divided into two forms: fixed bed and moving bed. Fixed bed filter is a kind of shallow filter with a long history of application. It can be divided into slow filter and fast filter; slow filter is now available Elimination; fast filters are divided into water flushing fast filters and air-water combined flushing filters, such as: four-valve filter, double-valve filter, valveless filter, siphon filter, mobile cover filter, filter brick filter, V-shaped filter, flap filter, U-tube filter and so on. The biggest defect of these old-fashioned filter tanks is that there are problems such as huge and complicated backwashing systems and large foot...

Claims

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Application Information

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IPC IPC(8): C02F3/30
CPCC02F3/301C02F3/302C02F2203/006C02F2303/14C02F2303/16Y02W10/10
Inventor 陈传艳
Owner XIAMEN BAST CLEAN ENVIRONMENTAL TECH
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