CN-224226810-U - Circulating water aquaculture denitrification system

CN224226810UCN 224226810 UCN224226810 UCN 224226810UCN-224226810-U

Abstract

The utility model discloses a circulating water aquaculture denitrification system, wherein a hollowed supporting part is arranged in a denitrification biological pond and divides the internal space of the denitrification biological pond into an upper space area and a lower space area which are communicated up and down, a water inlet pipe supplies water to the lower space area, the water inlet pipe comprises a first sub water inlet pipe, the first sub water inlet pipe is positioned in the lower space area, a water through hole is arranged on the pipe wall of the first sub water inlet pipe, a sewage drain pipe is arranged at the bottom of the lower space area, denitrification filler is filled in the upper space area, a stirring device is arranged in the upper space area and is used for stirring the denitrification filler, and a carbon source adding device is used for adding a carbon source into the water inlet pipe. The denitrification system has good denitrification effect and effectively reduces the treatment burden of the circulating water aquaculture tail water.

Inventors

YANG TAO
YANG BO
Ren Hengtong
LIU JUNHUA
Qi Limiao

Assignees

青岛海兴智能装备有限公司

Dates

Publication Date: 20260512
Application Date: 20250325

Claims (10)

1. The utility model provides a recirculating aquaculture denitrification system which characterized in that includes: a denitrification biological pond; the hollow supporting part is arranged in the denitrification biological pond and divides the internal space of the denitrification biological pond into an upper space area and a lower space area, and the upper space area is communicated with the lower space area; The water inlet pipe is configured to supply water to the lower space region, the water inlet pipe comprises a first sub water inlet pipe, the first sub water inlet pipe is positioned in the lower space region, and water through holes are formed in the pipe wall of the first sub water inlet pipe; A drain pipe arranged at the bottom of the lower space region; denitrification filler filled in the upper space region; a stirring device disposed in the upper space region and configured to stir the denitrification filler; and a carbon source adding device configured to add a carbon source into the water inlet pipe.
2. The recirculating aquaculture denitrification system according to claim 1, wherein, The first sub water inlet pipe is located below the hollow supporting portion and is close to the hollow supporting portion, and the first sub water inlet pipe extends along the extending direction of the hollow supporting portion.
3. The recirculating aquaculture denitrification system according to claim 1, wherein, The pipe wall of the first sub water inlet pipe is provided with a plurality of water through holes which are arranged at intervals.
4. The recirculating aquaculture denitrification system according to claim 1, wherein, The water inlet pipe further comprises a second sub water inlet pipe, the second sub water inlet pipe extends downwards to the lower space area through the upper space area, the second sub water inlet pipe is communicated with the first sub water inlet pipe, and the carbon source adding device adds a carbon source into the second sub water inlet pipe.
5. The recirculating aquaculture denitrification system according to claim 1, wherein, The bottom of the lower space region is provided with at least one concave region, and the water inlet of the drain pipe is positioned at the bottom of the concave region.
6. The recirculating aquaculture denitrification system according to claim 5, wherein, The bottom of the lower space region is provided with a plurality of concave regions which are arranged at intervals, and a drain outlet is arranged at the bottom of any concave region.
7. The recirculating aquaculture denitrification system according to claim 1, wherein, The denitrification filler comprises biological balls, and polyurethane sponge is filled in the biological balls.
8. The recirculating aquaculture denitrification system according to claim 1, wherein, The hollow supporting part is made of toughened glass, and the toughened glass forms a hollow grid structure.
9. The recirculating aquaculture denitrification system according to claim 1, wherein, A detection instrument is also included and is configured to detect dissolved oxygen data within the inlet tube.
10. The recirculating aquaculture denitrification system according to claim 1, wherein, The water inlet pipe is connected with a clear water outlet pipeline of the micro-filter.

Description

Circulating water aquaculture denitrification system Technical Field The utility model relates to the technical field of aquaculture, in particular to a circulating water aquaculture denitrification system. Background In a circulating water culture system, because metabolites, food residues and other proteins of a culture object cannot be timely decomposed, ammonia nitrogen, nitrite and the like in a water body are rapidly accumulated, and meanwhile, in the circulating water culture system, due to the fact that the culture density is high and the water body volume is limited, the factors can cause rapid deterioration of the culture water body, and even cause massive death of the culture object, so that huge economic loss is caused. Ammonia nitrogen and nitrite have strong toxicity to the cultured objects, and are important water pollutants in the current aquaculture process. At present, the removal of nitrogen solves a part of the wastewater in advance from the circulating water, most of the wastewater is treated by utilizing nitrification-denitrification in a biological pond, the denitrification effect is poor, the practicability is poor, and the wastewater treatment burden of the circulating water culture is increased. The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention Aiming at the problems pointed out in the background technology, the utility model provides a circulating water culture denitrification system which has good denitrification effect and effectively reduces the treatment burden of circulating water culture tail water. In order to achieve the aim of the utility model, the utility model is realized by adopting the following technical scheme: In some embodiments of the application, a circulating water aquaculture denitrification system is provided, a hollowed supporting part is arranged in a denitrification biological pond, the hollowed supporting part divides the internal space of the denitrification biological pond into an upper space area and a lower space area which are communicated up and down, a water inlet pipe supplies water to the lower space area, the water inlet pipe comprises a first sub water inlet pipe, the first sub water inlet pipe is positioned in the lower space area, a water through hole is formed in the pipe wall of the first sub water inlet pipe, a sewage pipe is arranged at the bottom of the lower space area, denitrification filler is filled in the upper space area, a stirring device is arranged in the upper space area and is configured to stir the denitrification filler, and a carbon source adding device is configured to add a carbon source to the water inlet pipe. The circulating water aquaculture denitrification system has the beneficial effects that the interior of the denitrification biological pond is divided into the upper space area and the lower space area which are arranged up and down and are communicated through the hollowed-out supporting part, the lower space area is internally provided with the water inlet pipe and the sewage draining pipe, and the upper space area is internally provided with the stirring device and filled with denitrification filler. The denitrification system is positioned in a water treatment link of circulating water cultivation, water is filtered by the micro-filter, one path of water enters the denitrification biological pond through the pump, and the other path of water enters the nitrification biological pond through the pump. The water flows into the lower space region through the water inlet pipe, then uniformly flows upwards to the upper space region, and is subjected to aerobic denitrification and then purified anaerobic denitrification. The denitrification system and the nitrification system independently operate and are not interfered with each other, so that the normal and stable operation of circulating water culture is ensured, and the denitrification effect is remarkably improved. The sewage pipes are arranged at the bottom, when sewage is flushed, normal water inflow of the system is not required to be stopped, sewage can be discharged at any time, and normal cultivation of the circulating water system is not affected when sewage is discharged. The hollow supporting part is arranged, the uniformly arranged hollow structure plays a role in uniformly supplementing water, so that water in the lower space area can uniformly flow upwards into the upper space area, the denitrification effect is improved, and the normal operation of bottom pollution discharge is ensured. The denitrification filler is stirred by the stirring device, so that the low dissolved oxygen environment is ensured, and the denitrification effect is improved. When the inside of the denitrification filler is blocked, the denitrification fill