Crossflow type biofilter and filter system for surface water

A biological filter, cross-flow technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as high cost

Active Publication Date: 2015-07-01
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Domestic sewage in my country also has the characteristics of low carbon-to-nitrogen ratio. The traditional denitrification treatment process is limited by the lack of carbon source. The co

Method used

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  • Crossflow type biofilter and filter system for surface water

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

[0018] like figure 1 As shown, a cross-flow biological filter for surface water, one end of the filter is provided with a water distribution channel 11, the other end is provided with a water distribution channel 2 12, between the water distribution channel 1 11 and the water distribution channel 2 12 is a filling area 4, and the The water channel one 11 and the filling area 4 are separated by a perforated wall one 31, the distribution channel two 12 and the filling area 4 are separated by a perforated wall two 32, and a height-adjustable inlet and outlet weir is set in the water distribution channel one 11. 21 , The second 12 of the water distribution channel is provided with a second inlet and outlet weir 22 with adjustable height.

[0019] When the water enters from the distribution channel 11, the height of the inlet and outlet weir 1 21 is increased, and the height of the inlet and outlet weir 222 is lowered. Under the action of the water head pressur...

Example Embodiment

[0024] Example 2

[0025] The control device is used to control the inflow of water from the first water distribution channel 11 or the second water distribution channel 12 according to the set time, and control the height adjustment of the first inlet and outlet weirs 21 and the second inlet and outlet weirs 22 accordingly. So as to realize the automatic switching of the water inlet direction according to the time.

Example Embodiment

[0026] Example 3

[0027] Dissolved oxygen content detection devices are installed at both ends of the packing area 4, and the dissolved oxygen content detection devices are connected to the control system. According to the detection results of the dissolved oxygen content detection devices:

[0028] When the dissolved oxygen content detected by the dissolved oxygen content detection device close to the water distribution channel one 11 is lower than the preset value, the control system controls the water intake from the water distribution channel one 11;

[0029] When the dissolved oxygen content detected by the dissolved oxygen content detection device close to the second water distribution channel 12 is lower than the preset value, the control system controls the water inflow from the second water distribution channel 12;

[0030] And correspondingly control the height adjustment of the inlet and outlet weir 1 21 and the inlet and outlet weir 22.

[0031] This realizes the...

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Abstract

The invention provides a crossflow type biofilter for surface water. A water distribution channel I is formed in one end of the filter, and a water distribution channel II is formed in the other end of the filter, and a packing region is formed between the water distribution channel I and the water distribution channel II; the water distribution channel I and the packing region are separated by a perforated wall I, and the water distribution channel II and the packing region are separated by a perforated wall II; a height-adjusted water inlet and outlet dam I is arranged in the water distribution channel I, and a height-adjusted water inlet and outlet dam II is arranged in the water distribution channel II; when water enters from the water distribution I, the height of the water inlet and outlet dam I heightened, and the height of the water inlet and outlet dam II is lowered, so that bi-directional crossflow water intake can be realized; the aerobic zone and the anaerobic zone of the packing region are switched, the aerobic zone has an effect of nitrifying, and denitrification is carried out by utilizing microorganism endogenesis in the anaerobic zone, so that a good denitrification effect can be achieved. According to the biofilter, the denitrification process can be smoothly performed under a condition of overcoming carbon source deficiency, and high-efficiency low-cost water treatment process can be realized.

Description

technical field [0001] The invention belongs to the technical field of surface water purification and treatment, relates to the treatment of natural rivers and lakes and urban artificial water bodies, and can also be used for denitrification treatment of domestic sewage under certain conditions, and specifically relates to a cross-flow biological filter for surface water and filter system. Background technique [0002] In recent years, there have been many reports about the deteriorating water quality of urban inner lakes and large natural rivers and lakes, and the trend of eutrophication is becoming more and more serious. The water quality characteristics are generally low in COD and high in TN. Domestic sewage in my country also has the characteristics of low carbon-to-nitrogen ratio. The traditional denitrification treatment process is limited by the lack of carbon source. The cost of denitrification is huge. Under this background, the development of high-efficiency and e...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F9/14
Inventor 薛涛王晓昌吴鹍王楠敖冬邓玮玮
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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