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Method for building backflow-free multi-stage AO<+> digestion method-based village sewage treatment facility

A construction method and non-reflux technology, applied in the direction of water/sewage multi-stage treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problems of adding various structures, large power consumption, and large infrastructure investment, etc., to achieve Long service life, cost saving, easy to obtain results

Inactive Publication Date: 2017-09-19
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The difficulty in choosing a process for building a facility that treats hundreds of tons of sewage from villages and towns per day lies in the large power consumption; High maintenance costs and professional management are required. The difficulty of sludge disposal lies in the large amount of sludge discharge and the need to ensure continuous return of activated sludge

Method used

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  • Method for building backflow-free multi-stage AO&lt;+&gt; digestion method-based village sewage treatment facility
  • Method for building backflow-free multi-stage AO&lt;+&gt; digestion method-based village sewage treatment facility
  • Method for building backflow-free multi-stage AO&lt;+&gt; digestion method-based village sewage treatment facility

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) No backflow multi-stage AO + ecological consumption method to treat village and town sewage flow Q = 24m 3 / d. Its sump 2 length L1=4.50m, width B1=2.50m, height H=2.50m; Anaerobic pond 4 length L3=1.20m, width B2=2.20m, height H=2.50m; Aerobic pond 5 length L4 =1.20m, width B2=2.20m, height H=2.50m; anaerobic pool 6 length L5=1.20m, width B2=2.20m, height H=2.50m; aerobic pool 7 length L6=1.20m, width B2 =2.20m, height H=2.50m; Settling tank 8 length L7=1.20m, width B3=1.10m, height H=2.50m; Disinfection discharge pond 9 length L7=1.20m, width B4=1.10m, height H= 2.50m; length L8=1.20m of the sludge tank 10, width B2=2.20m, height H=2.50m.

[0030] (2) Subsurface constructed wetland mainly consists of water distribution system, waterproof layer laying, cushion laying, wall construction, plant arrangement, etc. The area of ​​subsurface wetland is A=Q*1.2, length L9=6.00m, width B5=4.80m , height H6=1.40m.

[0031] (3) Lay 100mm plain soil, 200mm thick gravel cus...

Embodiment 2

[0038] (1) Non-reflux multi-stage AO + ecological consumption method to treat village and town sewage flow Q = 48m 3 / d. Its sump 2 length L1=6.00m, width B1=3.50m, height H=2.50m; Anaerobic pond 4 length L3=1.80m, width B2=2.80m, height H=2.50m; Aerobic pond 5 length L4 =1.80m, width B2=2.80m, height H=2.50m; anaerobic pool 6 length L5=1.80m, width B2=2.80m, height H=2.50m; aerobic pool 7 length L6=1.80m, width B2 =2.80m, height H=2.50m; Settling tank 8 length L7=1.80m, width B3=1.40m, height H=2.50m; Disinfection discharge tank 9 length L7=1.80m, width B4=1.40m, height H= 2.50m; length L8=1.80m of the sludge tank 10, width B2=2.80m, height H=2.50m.

[0039] (2) Subsurface constructed wetland mainly consists of water distribution system, waterproof layer laying, cushion laying, wall construction, plant arrangement, etc. The area of ​​subsurface wetland is A=Q*1.2, length L9=8.00m, width B5=7.20m , height H6=1.40m.

[0040] (3) Lay 100mm plain soil, 200mm thick gravel cushio...

Embodiment 3

[0047] (1) Non-reflux multi-stage AO + ecological consumption method to treat village and town sewage flow Q = 96m 3 / d. Its sump 2 length L1=10.00m, width B1=4.00m, height H=2.50m; Anaerobic pond 4 length L3=4.00m, width B2=3.60m, height H=2.50m; Aerobic pond 5 length L4 =4.00m, width B2=3.60m, height H=2.50m; anaerobic pool 6 length L5=4.00m, width B2=3.60m, height H=2.50m; aerobic pool 7 length L6=4.00m, width B2 =3.60m, height H=2.50m; Settling tank 8 length L7=4.00m, width B3=1.80m, height H=2.50m; Disinfection discharge tank 9 length L7=4.00m, width B4=1.8m, height H= 2.50m; length L8=4.00m of the sludge tank 10, width B2=3.60m, height H=2.50m.

[0048] (2) Subsurface flow artificial wetland mainly consists of water distribution system, waterproof layer laying, cushion laying, wall construction, plant arrangement, etc. The area of ​​subsurface flow wetland is A=Q*1.2, length L9=14.00m, width B5=8.23m , height H6=1.40m.

[0049] (3) Lay 100mm plain soil, 200mm thick g...

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Abstract

The invention discloses a method for building a backflow-free multi-stage AO<+> digestion method-based village sewage treatment facility. Aiming at the problems that the concentration of pollutants, such as COD, total phosphorus, total nitrogen, ammonia nitrogen and nitrate, in village sewage in southern developed districts is higher than that of urban sewage and a facility built through a conventional urban sewage treatment process (such as A / O, SBR and BAF) hardly meets the national discharge standard, particularly hardly conforms to standard-meeting discharge of the total phosphorus and the total nitrogen, the invention provides the method for building the backflow-free multi-stage AO<+> digestion method-based village sewage treatment facility. A water collection tank, an anaerobic pool, an aerobic tank, a settling tank, a disinfection and discharge tank, a sludge tank, a subsurface-flow constructed wetland and the like are mainly included. When the village sewage passes through the facilities in sequence, the pollutants, such as the COD, the total phosphorus, the total nitrogen, the ammonia nitrogen and the nitrate, can be removed.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method for constructing a non-reflux multi-stage AO+ecological absorption method for treating village and town sewage facilities. technical background [0002] With the improvement of people's living standards in our country, changes in diet structure, production and lifestyle, the quality of sewage in villages and towns has undergone major changes, far exceeding the natural self-purification and carrying capacity. Building facilities that process hundreds of tons of village and town sewage per day is different from building decentralized rural sewage facilities that process tens of tons per day, and different from urban sewage facilities that process thousands to hundreds of thousands of tons per day. for: [0003] (1) The decentralized rural sewage facilities that process dozens of tons per day are mostly built using traditional activated sludge technolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F3/30C02F3/32C02F9/00
Inventor 张文艺黄彬周新程陈冬陶勤锋毛林强
Owner CHANGZHOU UNIV
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