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Riverway channel water quality biologically-intensifying device and application thereof

A bio-augmentation and ditch technology, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of not being able to use river purification well, and achieve easy adjustment and replacement, The effect of increasing the concentration of microorganisms and high adsorption removal rate

Active Publication Date: 2013-08-28
江苏三强环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing moving bed biofilm reactor cannot be well used in river purification due to its structural characteristics, especially for the treatment of polluted water bodies in rivers and ditches under low temperature conditions.

Method used

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  • Riverway channel water quality biologically-intensifying device and application thereof
  • Riverway channel water quality biologically-intensifying device and application thereof
  • Riverway channel water quality biologically-intensifying device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]Example 1 Set up a water-flow-driven bioaugmentation device in a river course (ditch) with Class IV water quality (according to GB3838-2002 surface water environmental quality standard). After one month of film-hanging, the enhanced device entered the formal operation stage. The biofilm adsorbed river pollutants. Through the removal effect of the biological rope on organic matter and the simultaneous denitrification effect of the suspended filler, the quality of the river water purified by the bio-enhanced device was purified, and the COD Reduced by 30% to 40%, N and P reduced by 25% to 30%.

Embodiment 2

[0026] Embodiment 2 Set up a water-flow-driven bioaugmentation device in a river course (ditch) with Class V and inferior Class V water quality (according to GB3838-2002 surface water environmental quality standard), and apply a plurality of filling area units in the vertical direction of the transfer axis 1, according to different Water depth and water quality, so that the upper and lower unit fillers are arranged in a staggered manner to achieve complementary advantages, and then the film is planted. After the film is mature, it enters the stable operation stage, absorbs and removes pollutants, enhances the bioaugmentation effect, and reduces COD by 50%. N, P decreased by 25% to 35%.

Embodiment 3

[0027] Example 3 Use installed bioaugmentation devices in small rivers (ditches) that have icing periods in winter. According to the thickness of the local ice layer, on the basis of existing film formation and low-temperature acclimation, the height of the device is reduced below the ice layer , when the shaft shell 2 is wrapped in ice, the intermediate shaft 1 is guaranteed to rotate freely, and the device transitions from normal temperature to low temperature operation stage. The domesticated biofilm directly adsorbs and removes pollutants, and the device operates normally, reaching the freezing period in winter The effect of continuous purification of the river can reduce COD by 20% to 25%, and N and P by 15% to 20%.

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Abstract

The invention provides a riverway channel water quality biologically-intensifying device and application thereof, belonging to the field of water treatment. The riverway channel water quality biologically-intensifying device comprises a transferring shaft and a filler area, wherein with the transferring shaft is positioned in the center of the riverway channel water quality biologically-intensifying device; the filler area encloses the transferring shaft. The riverway channel water quality biologically-intensifying device is characterized in that an upper fixed plate (3), a lower fixed plate and the transferring shaft (1) are integrated into a whole by taking the transferring shaft (1) as a center; an impeller (5) is fixed on the lower fixed plate; the filler area (4) is divided into fourregions through a grating sieve mesh (6), and biological fillers are filled in the regions. The integral riverway channel water quality biologically-intensifying device is driven to move by taking water flows as a driving force when being applied to the treatment of riverway channel water bodies, prevents the fillers from washing away by combining the fixed biological fillers with suspension fillers, can achieve the effective elimination and the synchrous denitrification of COD (Chemical Oxygen Demand), achieves the moving bed effect and also greatly enhances the mass transfer rate of nutrient substances and dissolved oxygen; and in addition, the riverway channel water quality biologically-intensifying device can carry out the treatment aiming at the pollution conditions of different water layers of riverway channels and also has the advantages of energy saving, environmental protection, low acquisition cost and operation cost, and the like.

Description

technical field [0001] The invention relates to a bio-augmentation device, more specifically to a bio-augmentation device for water quality in a river channel and ditch and its application. Background technique [0002] The river ecosystem is a complex system, which is composed of subsystems such as riparian ecosystem, water ecosystem, wetland and swamp ecosystem. The discharge of sewage into the river, excessive water use, crowding of river beaches, deforestation, introduction of alien species, and large-scale damming, reservoir construction, channelization and other water conservancy engineering measures will all damage the health of the river ecosystem. Excessive water use and sewage discharge lead to serious shortage of water or deterioration of water quality, making it difficult for most aquatic organisms to survive, which will lead to the collapse of the river ecosystem. Various water conservancy projects will change the natural landform characteristics, hydrology and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00C02F3/34
Inventor 任洪强牛川丁原红郭瑞昕
Owner 江苏三强环境工程有限公司
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