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A land intensive treatment device for domestic sewage

A technology for strengthening treatment and domestic sewage. It is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of difficulty in re-oxygenation in the enhanced treatment process, and achieve the ability to promote denitrification. and the overall treatment effect, the effect of promoting nitrification and accelerating the decomposition of retained organic matter

Inactive Publication Date: 2011-12-14
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a domestic sewage land intensive treatment device for the difficulty of reoxygenation in the current domestic sewage land intensive treatment process

Method used

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  • A land intensive treatment device for domestic sewage
  • A land intensive treatment device for domestic sewage
  • A land intensive treatment device for domestic sewage

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Embodiment

[0015] (1) The device is 2m long, 2m wide, and 2.5m deep, and is filled with infiltration medium with a thickness of 2.4m; 0.5m, the particle size of the filtration medium is 32-16-8mm from bottom to top; the middle layer is the middle layer 2 of the filtration medium, 1.4m thick, and the particle size is 0.5-2mm; the upper layer is the top layer 1 of the filtration medium, 0.5m thick , the particle size of the percolation medium is 1-1.2 mm; the outlet pipe 7 is installed on the support layer at the bottom of the percolation medium.

[0016] (2) Lay a main water distribution pipe 4 on the surface of the infiltration medium, and the main water distribution pipe 4 is vertically connected with the main water distribution pipe 10; the main water distribution pipe 4 is vertically connected with a branch water distribution pipe 5 on the surface of the infiltration medium, and the The surface is divided into 4 small grids with an area of ​​one square meter, and a perforated air pipe...

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Abstract

The invention discloses a land strengthening treatment device for domestic wastewater. A perforated aeration pipe is inserted into the surface of a percolation medium filled in the land strengthening treatment device, thereby increasing the contact area between superficial percolation medium and air. In addition, the arrangement of the aeration pipe and an intermittent water distribution working mode are combined, during the whole infiltration and dry-off process of the wastewater, the water in the pores of the percolation medium in a water-saturated state drains under the action of gravity to generate a negative pressure, and the outside air enters the pores of the medium in the system through the aeration pipe under the drive of the pressure difference and under the diffusion action caused by oxygen concentration difference between both sides of gas-solid interfaces of the aeration holes. The reoxygenation system disclosed by the invention improves the air-to-medium mass transfer efficiency and reoxygenation effect, does not consume electric energy, is convenient to construct and is simple to manage.

Description

technical field [0001] The invention relates to a domestic sewage land intensive treatment device, which belongs to the technical field of environmental protection. Background technique [0002] With the development of the economy and the acceleration of the urbanization process, the shortage of water resources and serious water pollution have become common environmental problems. From a national perspective, water pollution from domestic sewage is spreading from cities to rural areas. In actual production and life, the treatment of rural domestic sewage is particularly difficult due to its characteristics different from urban domestic sewage. The land intensive treatment technology, such as artificial rapid infiltration process, uses artificial medium backfill, high hydraulic load, can achieve the effect of advanced sewage treatment, and has the advantages of low investment, low energy consumption, flexible process, low operating cost, convenient management and maintenance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 曹长春左金星崔赟璐
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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