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Application of beanstalk taken as carbon source for biological nitrogen removal by denitrification

Inactive Publication Date: 2018-06-05
宁波源溯物联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The patent with the publication number CN101200332A is aimed at removing nitrate in aquaculture water, and removes nitrate by combining sulfur autotrophic denitrification and heterotrophic denitrification. The process is long, and by-products such as sulfate and hydrogen sulfide will be produced.

Method used

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  • Application of beanstalk taken as carbon source for biological nitrogen removal by denitrification
  • Application of beanstalk taken as carbon source for biological nitrogen removal by denitrification
  • Application of beanstalk taken as carbon source for biological nitrogen removal by denitrification

Examples

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Embodiment 1

[0026] Example 1 Application of soybean stalks as a carbon source for denitrification and denitrification in aquaculture systems

[0027] 1. Preparation of denitrification system

[0028] (1) Carbon source preparation

[0029] A hollow cylindrical plexiglass container with a diameter of 4 cm and a height of 40 cm is used as a denitrification reactor. Cut the dried bean straw into small sections with a length of about 1 cm, soak in clear water overnight, drain, and then fill the bean straw into the above-mentioned denitrification reactor as a carbon source, and the filling height is about three times the height of the reactor. 2 / 2. The denitrification reactor is an upflow reactor, the bottom is provided with a water inlet for water intake, and the upper part is provided with a water outlet for water outlet.

[0030] (2) Inoculation of reactor and domestication of microorganisms

[0031] Add sodium nitrate to tap water to make the concentration of nitrate nitrogen around 50m...

Embodiment 2

[0039] Application of embodiment 2 denitrification system

[0040] 1. Preparation of denitrification system

[0041] As in Example 1.

[0042] 2. Application of denitrification system

[0043]Use a 500L aquarium to raise 8 koi carps, raise them according to conventional methods, and change the water by 10% every 3 days to ensure that the nitrate nitrogen concentration in the aquarium does not exceed 15mg / L. Connect the aquarium to the denitrification system described above. Such as image 3 As shown, the aquarium 1 has its own filter system 2 and is connected with a denitrification system including a peristaltic pump 3 and a denitrification reactor 6 . The aquaculture water in the aquarium 1 is quantitatively input to the water inlet 4 of the denitrification reactor through the peristaltic pump 3, and then stays in the bean straw 5 inoculated with activated sludge for more than 5 hours for denitrification treatment, and then flows from the water outlet of the denitrificati...

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Abstract

The invention relates to application of beanstalk taken as a carbon source for biological nitrogen removal by denitrification and further relates to a method for nitrogen removal by denitrification ofwater and a denitrification system used for a circulating aquaculture system. According to the invention, the beanstalk is taken as a solid carbon source, activated sludge is inoculated to be used for nitrogen removal by denitrification of water, most nitrogen elements in the water can be removed within short time, and the beanstalk is wide in source and low in cost. The beanstalk is taken as thecarbon source for denitrification of circulating water of aquaculture, the concentration of nitrate nitrogen cannot exceed 10mg / L, and pH value is stabilized to be 7-8 in a circulating system under the condition of not changing water and adding medicaments. The nitrogen removal system provided by the invention is simple in structure and strong in practicability, can be conveniently used for various circulating aquaculture systems, and has very broad application prospect.

Description

technical field [0001] The invention relates to the field of biological denitrification and denitrification, in particular to the use of soybean straw as a carbon source for biological denitrification and denitrification and a method for denitrification and denitrification of water bodies. Background technique [0002] With the acceleration of my country's urbanization process and the increasing shortage of water resources and land resources, it has become a major trend to establish an intensive and modern circulating aquaculture model. Recirculating aquaculture is a new management mode of fishery production, which has the advantages of small footprint, concentrated production, high output, and good benefits. It is a realistic choice for the development of modern fishery production. In recirculating aquaculture, water purification is the core technology. [0003] In the recirculating aquaculture system, more than 80% of the bait eaten by fish is discharged into the water as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F103/20
CPCC02F3/2813C02F2103/20C02F2305/06
Inventor 祝健
Owner 宁波源溯物联科技有限公司
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