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Corridor-type multi-area domestic sewage advanced treatment system and treatment method

A domestic sewage and advanced treatment technology, applied in the field of water treatment, to achieve the effect of improving mass transfer efficiency and increasing contact area

Inactive Publication Date: 2010-12-15
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the shortcomings of the existing advanced treatment and purification technology, the purpose of the present invention is to provide a corridor-type multi-zone domestic sewage advanced treatment system and treatment method, using wind energy as the driving force of the combined process of rotating brush aeration and submerged packing cylinder , it can carry out effective advanced treatment of domestic wastewater and sewage plant tail water pollutants, minimize energy consumption, increase mass transfer rate, improve oxygen utilization rate, and fully achieve the effect of advanced treatment

Method used

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  • Corridor-type multi-area domestic sewage advanced treatment system and treatment method

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Embodiment 1

[0022] Embodiment 1 In the biological treatment stage of a sewage treatment plant that mainly treats domestic sewage, a corridor-type multi-zone advanced treatment system is directly established, and its basic structure and treatment methods are the same as those described above. The primary packing area uses fiber ball packing with a diameter of 180mm, and the secondary packing area uses a specific surface area of ​​0.82m 2 / m3 Rosette packing, step ring packing is used in the tertiary packing area. The steps are: (1) use the domestic sewage to be treated in the plant to enter the water for film-hanging treatment, and the film-hanging is successful after 1 to 2 months; (2) Sewage treatment plant After the domestic wastewater passes through the basic pretreatment unit of the sewage plant, it directly enters the advanced treatment process for the removal of pollutants; (3) After the sewage is treated in the primary packing area, it enters the aeration area for aeration to restor...

Embodiment 2

[0023] Embodiment 2 In the area where the tail water of the sewage treatment plant does not meet the standard, a corridor-type multi-zone advanced treatment system is established, and its basic structure and treatment method are the same as above. The primary packing area adopts 50mm multi-faceted hollow ball packing, and the secondary packing area adopts a specific surface area of ​​0.89m 2 / m 3 Rosette packing, the specific surface area of ​​the tertiary packing area is 114m 2 / m 3 Polypropylene filler, the steps are: (1) use a certain concentration of domestic wastewater to coat the filler area to ensure the normal needs of microorganisms for carbon and nitrogen sources; , to domesticate the biofilm; (3) After the thickness of the biofilm is stable, the tail water of the sewage treatment plant is connected to the advanced treatment process to remove pollutants; (4) The sewage is treated in the primary packing area and then enters the exposure (5) The aerated sewage enter...

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Abstract

The invention discloses a corridor-type multi-area domestic sewage advanced treatment system and a corridor-type multi-area domestic sewage advanced treatment method and belongs to the field of sewage treatment. The treatment system comprises filler areas and aeration areas, wherein a first-level filler area is formed at a water inlet and is sequentially connected with an aeration area, a second-level filler area, an aeration area and a third-level filler area. The treatment method comprises the following steps that: domestic sewage enters the first-level filler area through the water inlet and performs film formation on the filler to realize synchronous denitrogenation; sewage flows are combined in the aeration area, and a rotary brush is driven to rotate by fan wings; the aerated sewage enters the second-level filler area, and the second-level filler area is driven to rotate by wind power to realize film formation and pollutant adsorption; the sewage output by the second-level filler area again goes through the rotary brush aeration area and is aerated again; and the aerated sewage enters the third-level filler area in which the filler is elastic three-dimensional filler, and the sewage is treated and drained. The system is convenient to install, move and combine and the filler is convenient to adjust and replace; and the system and the method have the characteristics of energy conservation, environmental protection, low purchasing cost, low operation cost and the like.

Description

technical field [0001] The invention belongs to an advanced treatment system and a method thereof in the field of water treatment, in particular to a corridor type multi-zone domestic sewage advanced treatment system and a treatment method. Background technique [0002] With the acceleration of urbanization and the improvement of living standards, the discharge of urban domestic sewage is also increasing year by year. Urban domestic sewage pollutants are mainly organic matter, such as starch, fat, protein, cellulose, sugar, mineral oil, etc., of which COD Cr 、BOD 5 , TKN (Kjeldahl nitrogen), TN, TP are also higher. COD of domestic sewage after primary physical treatment and secondary biochemical treatment Cr 、BOD 5 , TKN, NH 3 -N and so on are greatly reduced, but TN and TP are still high. After being discharged into the water body, it is easy to cause eutrophication of the water body, causing a large number of algae to grow and reproduce, causing red tides and algal bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30
CPCY02W10/33
Inventor 任洪强牛川丁原红郭瑞昕
Owner NANJING UNIV
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