Sewage water denitrification processing method of artificial rapid infiltration system and application thereof

A technology of artificial rapid infiltration and treatment method, which is applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. The system occupies a large area, etc.

Inactive Publication Date: 2008-12-10
SOUTHWEST JIAOTONG UNIV +1
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the artificial rapid infiltration system occupies a large area, and the total nitrogen index of the treated domestic sewage does not meet the first-level A standard in the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002)

Method used

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  • Sewage water denitrification processing method of artificial rapid infiltration system and application thereof
  • Sewage water denitrification processing method of artificial rapid infiltration system and application thereof

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Embodiment 1

[0031] Such as figure 1 , figure 2shown. An ordinary household with three households near the new campus of Southwest Jiaotong University in Xipu Town, Pixian County, Chengdu City treated domestic sewage. The per capita discharge was determined to be 24.68×10 -3 m / person·day, the sewage nitrogen index is: total nitrogen (calculated as N) = 28.99 mg / l, ammonia nitrogen (calculated as N) = 25.73 mg / l.

[0032] The above method is used to treat domestic sewage, the design hydraulic load is 1.0m / d, and the daily sewage treatment capacity is 38×10 -3 m.

[0033] The sewage treatment process is: pre-sedimentation tank → circulating pump → flow meter → manual rapid infiltration tank → water outlet.

[0034] According to the actual situation, the artificial rapid infiltration system is built near the farmer's house, including the pre-sedimentation tank 1 and the artificial rapid infiltration tank 2. Calculated according to formula 1, the effective cross-sectional area of ​​the a...

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Abstract

The invention discloses a sewage denitrogenation treatment method of an artificial quick percolation system and an application thereof. Aiming to overcome the disadvantages of the prior art that the total nitrogen index of domestic sewage treated by an artificial quick percolation system can not reach the I-A criteria of the Discharge Standard of Pollutants for Municipal Sewage Treatment Plant (GB18918-2002), the invention provides the sewage denitrogenation treatment method. The method channels sewage undergoing predeposition treatment into an artificial quick percolation pool filled with river sand, marble sand and crushed stone by means of two water distribution pipes; nozzles of the water distribution pipes are respectively positioned at the top of the upper surface of a percolation layer and inside a percolation medium; and sewage undergoing purification treatment flows out through an overflow water outlet. Compared with the prior art, the sewage denitrogenation treatment method has high total nitrogen removing efficiency, and treated sewage meets the I-A criteria in the Discharge Standard of GB18918-2002; moreover, the method has flexible process, low investment, less energy consumption, low operating cost and convenient maintenance and management, and is particularly suitable for the treatment of rural domestic sewage.

Description

technical field [0001] The invention relates to a sewage treatment method using an infiltration method, in particular to a sewage denitrification treatment method using an artificial rapid percolation tank and its application. Background technique [0002] With the rapid development of industry and the continuous improvement of rural urbanization, the shortage of water resources and serious water pollution have become one of the main problems faced by all parts of the country. According to the statistics of the State Environmental Protection Administration in 2006, the total amount of wastewater discharge in 2006 still showed an upward trend during the Tenth Five-Year Plan period. The discharge of industrial wastewater showed a downward trend for the first time since the "Tenth Five-Year Plan", and the discharge of domestic sewage continued to maintain a growth trend. Domestic sewage includes urban domestic sewage and rural domestic sewage. From a national perspective, wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00
Inventor 陈俊敏付永胜
Owner SOUTHWEST JIAOTONG UNIV
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