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Intermittent double-sludge denitrification AN (AO) n full-nitrification ultra-deep nitrogen and phosphorus removal process

A denitrification and double sludge technology, applied in water/sludge/sewage treatment, water pollutants, water/sewage treatment, etc., can solve problems such as unstable effluent water quality, and achieve the effect of improving the treatment effect

Active Publication Date: 2020-08-04
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an intermittent double-sludge denitrification AN(AO)n full nitrification ultra-deep nitrogen and phosphorus removal process to solve the problem of ultra-deep denitrification and phosphorus removal and unstable effluent quality

Method used

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  • Intermittent double-sludge denitrification AN (AO) n full-nitrification ultra-deep nitrogen and phosphorus removal process
  • Intermittent double-sludge denitrification AN (AO) n full-nitrification ultra-deep nitrogen and phosphorus removal process
  • Intermittent double-sludge denitrification AN (AO) n full-nitrification ultra-deep nitrogen and phosphorus removal process

Examples

Experimental program
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Effect test

Embodiment 1

[0047] An intermittent double-sludge denitrification AN(AO)n full nitrification ultra-deep nitrogen and phosphorus removal process, the process includes a device part; the device part includes: a sewage storage tank 1, a denitrification tank 2, a nitrification tank 3, an intermediate Pool 4, flocculation and sedimentation tank 5;

[0048] The sewage storage tank 1 is connected to the first pipeline 6, the first pipeline 6 is provided with a water pump 7, the sewage storage tank 1 is connected to the denitrification tank 2 through the first pipeline 6, and the denitrification tank 2 is provided with a decanter 9, and the denitrification tank 2 The water outlet of the device 9 is connected to the second pipeline 8 and the third pipeline 10, the decanter 9 is connected to the nitrification tank 3 through the second pipeline 8, and the second pipeline 8 is provided with a supernatant liquid transfer pump 12 and a solenoid valve 13;

[0049] The decanter 9 is connected with the flo...

Embodiment 2

[0052] On the basis of Example 1, the bottom of the denitrification tank 2 and the nitrification tank 3 are provided with an aeration head 20, and the aeration head 20 is connected with the air intake pipe 17, and the air intake pipe 17 is provided with a gas flow meter 18, and the air intake pipe 17 Connect with the aeration pump 19, and the aeration pump 19 is connected with the frequency converter 25;

[0053] The top of the denitrification tank 2 is covered with a semi-sealed shape, and the top of the denitrification tank 2 is provided with an exhaust hole;

[0054] Both the bottom of the denitrification tank 2 and the nitrification tank 3 are provided with a first sludge discharge pipe 21, and a sludge discharge pump 22 is provided on the first sludge discharge pipe 21;

[0055] The bottom of the nitrification tank 3 is connected with the second mud discharge pipe 43, the nitrification tank 3 is connected with the denitrification tank 2 through the second mud discharge pi...

Embodiment 3

[0057] On the basis of Example 1-2, the upper part of the flocculation-settlement tank 5 is set as a cylinder and the lower part is set as a funnel-shaped cone with an angle of 45-70°, and the bottom of the flocculation-settlement tank 5 is provided with a third mud discharge pipe 23. The third row of mud pipes 23 is provided with a second mud discharge valve 24;

[0058] The flocculation settling tank 5 is connected with the phosphorus removal flocculant pipe 39 and the PAM flocculant pipe 27, the phosphorus removal flocculant pump 28 is arranged on the phosphorus removal flocculant pipe 39, and the PAM flocculant pipe pump 29 is arranged on the PAM flocculant pipe 27, and the flocculation The settling tank 5 is connected to the phosphorus-removing flocculant barrel 30 through the phosphorus removal flocculant pipe 39, and the flocculation settling tank 5 is connected to the PAM flocculant barrel 31 through the PAM flocculant pipe 27. The pipe 32 is provided with a drain valv...

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Abstract

The invention discloses an intermittent double-sludge denitrification AN (AO) n full-nitrification ultra-deep nitrogen and phosphorus removal process. A device comprises a sewage storage tank, a denitrification tank, a nitrification tank, an intermediate tank and a flocculating settling tank, the process is based on the denitrification nitrogen and phosphorus removal principle. Denitrifying bacteria and nitrifying bacteria are separately cultured in the denitrification tank and the nitrification tank; nitrification and denitrification reaction endpoint control is realized by monitoring pH, ORPand DO on line; residual ammonia nitrogen carried by sludge in the denitrification tank is subjected to multiple nitrification and denitrification to realize complete removal of nitrogen; anaerobic phosphorus release, denitrification phosphorus absorption and aerobic phosphorus absorption are utilized, phosphorus removal is enhanced through orthophosphate radical concentration monitoring and flocculation assistance, ultra-deep and stable phosphorus removal is achieved, and the problems that a traditional double-sludge denitrification process is poor in nitrogen and phosphorus purification effect and unstable in effluent quality are solved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an intermittent double-sludge denitrification AN(AO)n full nitrification ultra-deep nitrogen and phosphorus removal process. Background technique [0002] At present, the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" GB18918-2002 implemented in my country is seriously out of line with the "Surface Water Environmental Quality Standards" GB3838-2002. Domestically widely used sewage treatment processes: AB method, oxidation ditch method, A / O process, A / A / O process, SBR method, etc. lack deep nitrogen and phosphorus removal links, and after purification, they are only equivalent to the inferior category V of surface water, causing damage to the ecology, landscape, and water body functions of surface water. Groundwater quality poses a potential threat. With the rapid development of the economy and society, the people have higher and higher requirements for...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/10C02F101/16C02F101/30C02F101/38
CPCC02F1/5236C02F1/5281C02F1/56C02F3/302C02F3/308C02F9/00C02F2101/105C02F2101/16C02F2101/30C02F2101/38C02F2209/04C02F2209/06C02F2209/22C02F2209/38C02F2301/043C02F2301/08
Inventor 张唯段昌群李世玉程立忠王海玉罗春梅
Owner YUNNAN UNIV
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