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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

AI Technical Summary

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 cost of denitrification is huge. Under this background, the development of high-efficiency and energy-saving denitrification process has become a hot spot of domestic and foreign counterparts.

Method used

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  • Crossflow type biofilter and filter system for surface water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 As shown, a cross-flow biofilter for surface water, one end of the filter is provided with a distribution channel 11, and the other end is provided with a distribution channel 2 12, between the distribution channel 11 and the distribution channel 2 12 is a filling area 4, with The first water channel 11 is separated from the filling area 4 by a perforated wall 31, the second water distribution channel 12 is separated from the filling area 4 by a second perforated wall 32, and a height-adjustable inlet and outlet weir 121 is set in the first water distribution channel 11 , the height-adjustable inlet and outlet weir 2 22 is set in the distribution channel 2 12 .

[0019] When entering water from distribution canal one 11, turn up the height of inlet and outlet weir one 21, turn down the height of inlet and outlet weir two 22, water intake passes through distribution channel one 11 and inlet and outlet weir one 21, in by inlet and outlet weir one 21. Und...

Embodiment 2

[0025] Utilize the control device to control the water intake from the first distribution channel 11 or the second distribution channel 12 according to the set time, and control the height adjustment of the first water inlet and outlet weir 21 and the second water inlet and outlet weir 22 accordingly. In this way, the automatic switching of the water inlet direction according to the time is realized.

Embodiment 3

[0027] Dissolved oxygen content detection devices are installed at both ends of the filling 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 device:

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

[0029] When the dissolved oxygen content detected by the dissolved oxygen content detection device close to the distribution channel 2 12 is lower than the preset value, the control system controls water intake from the distribution channel 2 12;

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

[0031] In this way, the automatic switching of the water inlet direction according to 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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