Freshwater aquaculture pond tail water treatment system

A water treatment system and technology of treatment system, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The water quality of tail water does not meet the discharge standards and other problems, so as to achieve the effect of satisfying the recycling and reuse and reducing the concentration

Pending Publication Date: 2020-09-29
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing aquaculture tail water purification technology, either the storage tank and the clean water tank have not been reoxygenated, the purified water cannot meet the fishery standard and cannot be recycled, or the discharged tail water quality cannot meet the discharge standard

Method used

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  • Freshwater aquaculture pond tail water treatment system
  • Freshwater aquaculture pond tail water treatment system
  • Freshwater aquaculture pond tail water treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 freshwater pond culture tail water treatment system

[0049] This embodiment combines figure 1 , figure 2 Describe the freshwater pond culture tail water treatment system of the present invention.

[0050] Such as figure 1As shown, the present embodiment provides a tail water treatment system for freshwater aquaculture ponds, including a primary sedimentation tank 1 receiving the tail water, a nitrification / denitrification tank 2 and an aeration reoxygenation tank 3; the nitrification / denitrification tank 2 consists of The nitrification tank 21 and the denitrification tank 22 are composed, and the nitrification tank 21 is connected with the primary sedimentation tank 1 through the overflow dam 4, wherein, the lower half of the overflow dam 4 is the retaining dam 41, and the upper half is the first filter dam 42 The denitrification tank 22 is connected to the aeration reoxygenation tank 3 through the second filter dam 5 ; the third filter dam 211 is prov...

Embodiment 2

[0056] Embodiment 2 freshwater pond culture tail water treatment system

[0057] This embodiment combines figure 1 , image 3 Describe the freshwater pond culture tail water treatment system of the present invention.

[0058] Each part is set up as embodiment 1, and the difference is that the first filter dam 42, the second filter dam 5, and the third filter dam 211 are composed of multiple channels image 3 The filter composition shown.

[0059] The filter screen comprises an upper key 71, a float 72, a fixed buckle main rope 73, a binding strap 74, an omentum 75 and a ground cage 76 and forms. Among them, the upper line 71 is a polyester rope of about 1cm; the float 72 is a foam strip, and the diameter is configured according to the load; the fixed buckle main rope 73 is also a polyester rope of about 1cm; 40-mesh nylon non-knotted polyester mesh; ground cage 76 is configured according to the impact force of water flow.

Embodiment 3

[0060] Embodiment 3 freshwater pond culture tail water treatment system

[0061] This embodiment combines figure 1 , Figure 4 Describe the freshwater pond culture tail water treatment system of the present invention.

[0062] Each part is set up as embodiment 1, and the difference is that the first filter dam 42, the second filter dam 5, and the third filter dam 211 are composed of multiple channels Figure 4 The filter composition shown.

[0063] The filter screen comprises an upper key 71, a float 72, a fixed buckle main rope 73, a binding strap 74, an omentum 75 and an ecological base 77 and forms. Among them, the upper line 71 is a polyester rope of about 1 cm; the float 72 is a foam strip, and its diameter is configured according to the load; the main rope 73 of the fixed buckle is also a polyester rope of about 1 cm; The membrane 75 is a 40-mesh nylon knot-free polyester net; the length of the ecological base 77 is configured according to the water depth.

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Abstract

The invention discloses a freshwater aquaculture pond tail water treatment system, belonging to the field of freshwater pond aquaculture. The tail water treatment system comprises a primary sedimentation tank 1 for receiving tail water, a nitrification/denitrification tank 2 and an aeration reoxygenation tank 3, wherein the nitrification/denitrification tank 2 is composed of a nitrification tank 21 and a denitrification tank 22, and the nitrification tank 21 is connected with the primary sedimentation tank 1 through an overflow dam 4; the denitrification tank 22 is connected with the aerationreoxygenation tank 3 through a second filter dam 5; and a third filter dam 211 is arranged between the nitrification tank 21 and the denitrification tank 22. With the system, purified water can reacha fishing standard and is even superior to an inflow water source, so cyclic utilization is realized.

Description

technical field [0001] The invention belongs to the field of aquaculture in freshwater ponds, and in particular relates to a tail water treatment system for freshwater aquaculture ponds. Background technique [0002] At present, the purification and standard discharge of aquaculture tail water has become a hot spot in agricultural environmental science. There is a serious lack of comprehensive nitrogen and phosphorus reduction technologies for small-scale pond in-situ repair technologies and large-scale tail water treatment areas for contiguous ponds. [0003] For the treatment of aquaculture tail water, in principle, it is required to recycle the aquaculture water to achieve zero discharge. For special cases, the quality of the tail water that needs to be discharged from the farm should meet the Ministry of Agriculture's "Freshwater Pond Aquaculture Water Discharge Requirements" (SC / T9101-20007) Level 1 standard. In the existing aquaculture tail water purification technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/10C02F101/16C02F101/30C02F103/20
CPCC02F1/001C02F3/302C02F3/308C02F3/34C02F9/00C02F2001/007C02F2101/16C02F2101/30C02F2103/20
Inventor 郑尧胡庚东吴伟邴旭文高建操孟顺龙陈家长
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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