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Process for treating aquaculture wastewater with high ammonia nitrogen and low carbon nitrogen ratio

A low-carbon nitrogen ratio, aquaculture wastewater technology, applied in animal husbandry wastewater treatment, biological water/sewage treatment, water/sewage multi-stage treatment, etc. And other issues

Inactive Publication Date: 2021-05-11
湖南首辅环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The traditional treatment process needs to add a large amount of carbon source, which increases the operating cost of sewage treatment;
[0005] 2) The traditional treatment process is not thorough in denitrification, and cannot meet the emission standards stably;
[0006] 3) The traditional treatment process system is complicated, there are many types of equipment, the operation is difficult, and the technical requirements are high

Method used

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  • Process for treating aquaculture wastewater with high ammonia nitrogen and low carbon nitrogen ratio
  • Process for treating aquaculture wastewater with high ammonia nitrogen and low carbon nitrogen ratio
  • Process for treating aquaculture wastewater with high ammonia nitrogen and low carbon nitrogen ratio

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Embodiment 1

[0032] Embodiment one, such as Figure 1-3 As shown, a process for treating aquaculture wastewater with high ammonia nitrogen and low carbon-to-nitrogen ratio, the treatment system module of the process includes a water distribution area 1, and the water distribution area 1 is fixedly connected with two treatment systems, and the treatment system includes a fixed connection with the water distribution area 2 Anaerobic zone 2, anaerobic zone 2 is fixedly connected with anoxic zone 3, anoxic zone 3 is fixedly connected with aerobic zone 4, aerobic zone 4 is fixed with multiple sedimentation zones 5 inside, and sedimentation zone 5 is connected with the water outlet system 6 is fixedly connected, the sedimentation zone 5 also includes a combined sedimentation system 13, the combined sedimentation system 13 is used for mud-water separation, and the separated water is discharged to the subsequent advanced treatment through the water outlet system 6, the anaerobic zone 2 and the anox...

Embodiment 2

[0033] Embodiment 2, a treatment process also includes a multi-stage reflux system, the reflux system includes a mixed liquid reflux system 8, a reflux system 9 in the anoxic zone, a nitrifying liquid reflux system 10, a first sludge reflux system 11, and a second sludge reflux system System 12, the mixed liquid return system 8 is arranged between the anoxic zone 3 and the anaerobic zone 2, the mixed liquid return system 8 is used for the anoxic zone 3 to return the mixed liquid to the anaerobic zone 2, adopts the form of stripping, and can be used according to the water quality Adjust the return flow according to the situation, and the return flow system 9 in the anoxic zone is set between the two anoxic zones 3, and is used to obtain the internal return return liquid between the two anoxic zones 3. It adopts the stripping form, and the return flow can be adjusted according to the water quality. Flow rate, the nitrifying liquid return system 10 is set between the aerobic zone ...

Embodiment 3

[0034] Embodiment three, a kind of process of processing the culture waste water of high ammonia nitrogen low carbon nitrogen ratio, its process step is:

[0035] S101: Wastewater enters the water distribution area for water distribution treatment. One stream of waste water is divided into two streams to the subsequent treatment stage. When the water volume is only 50%-60% of the designed water volume, water can be distributed to one side only to reduce operating costs;

[0036] S102: The two streams of wastewater enter the two anaerobic zones respectively. The wastewater uses the action of anaerobic bacteria in this zone to decompose macromolecular organic matter into small molecular organic matter, which is usually called the hydrolysis and acidification stage. The mixed solution returned by the reflux system, the phosphobacteria will release phosphorus at this stage;

[0037] S103: Form a facultative and anoxic environment through the dissolved oxygen carried in the reflux ...

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Abstract

The invention discloses a process for treating aquaculture wastewater with high ammonia nitrogen and low carbon nitrogen ratio, which comprises a water distribution zone, the water distribution zone is fixedly communicated with two treatment systems, each treatment system comprises an anaerobic zone fixedly communicated with the water distribution zone, the anaerobic zone is fixedly communicated with an anoxic zone, a settling zone is fixedly communicated with a water outlet system, and thesettling zone also comprises a combined precipitation system. According to the process disclosed by the invention, a multi-section reflux system is adopted, so that a carbon source in raw wastewater can be fully utilized, the addition amount of the supplemented carbon source is reduced, and the operation cost is effectively reduced; according to the process, a multi-section reflux system is adopted, and the characteristics of nitrification and denitrification reactions of biochemical bacteria are utilized, so that deep denitrification is completed, and the denitrification effect is enhanced; and according to the process, a non-traditional mode that sludge flows back to the anaerobic zone is adopted, the sludge firstly flows back to the anoxic zone and then flows back to the anaerobic zone, nitrate nitrogen is prevented from damaging the phosphorus release effect of bacteria, then the phosphorus phagocytosis reaction degree of the rear-end aerobic zone is improved, and the purpose of strengthening phosphorus removal is achieved.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a process for treating aquaculture wastewater with high ammonia-nitrogen and low carbon-to-nitrogen ratio. Background technique [0002] Breeding wastewater mainly comes from flushing water for livestock and poultry houses, dripping drinking water, cooling water, and domestic sewage from farms. The flushing water consumption depends on the manure cleaning process, and the flushing water consumption of different manure cleaning processes varies greatly, so the amount of aquaculture sewage also varies greatly. At present, the treatment of aquaculture wastewater is an important part of environmental sewage treatment. [0003] And there is following shortcoming in the treatment process of existing aquaculture wastewater: [0004] 1) The traditional treatment process needs to add a large amount of carbon source, which increases the operating cost of sewage treatment; [0005] 2)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30C02F101/16C02F101/10C02F103/20
CPCC02F3/34C02F3/30C02F1/52C02F2101/30C02F2101/16C02F2101/105C02F2103/20
Inventor 曾祥林戴湘华刘富安田芸李登科李杰
Owner 湖南首辅环境科技有限公司
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