Hanging curtain type biological filtering pool and application thereof to recirculating aquaculture

A recirculating water aquaculture, biological filter technology, applied in biological water/sewage treatment, sustainable biological treatment, water distribution, etc. The effect of attachment and growth, simplified process flow

Active Publication Date: 2016-06-22
BEIJING AGRO BIOTECH RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the scale of aquaculture continues to expand and improve, extensive and semi-intensive aquaculture models are generally adopted in my country, and production is carried out at the expense of consuming water resources and sacrificing the ecological environment. Serious problems such as eutrophication, regional environmental pollution, and rampant breeding biological diseases

Method used

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  • Hanging curtain type biological filtering pool and application thereof to recirculating aquaculture
  • Hanging curtain type biological filtering pool and application thereof to recirculating aquaculture
  • Hanging curtain type biological filtering pool and application thereof to recirculating aquaculture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 curtain type biofilter test stage is to NH 4 + -N and NO 2 - -N degradation

[0043] The experimental group is a curtain-type biofilter reactor, which is a cuboid with 4 carbon fiber felts inserted inside, and the control group is a suspension filler with a large particle size (the filler is commercially available, its diameter is 1.5cm, and its height is 1cm ) constitutes the same reactor volume as that of the experimental group. Configure 6L of simulated sewage in the experimental group and the control group respectively, and the influent formula is: C 6 h 12 o 6 :33.3mg / L, NH 4 Cl: 57.3mg / L (NH 4 + -N:15mg / L), NaHCO 3 :71.4mg / L, NaHPO 4 : 18.85mg / L, mixed trace elements 1mg / L. Take the sludge from the aquaculture biological filtration system, dilute it until the solid content TS is 4500mg / L, inoculate 6ml of the diluted sludge into a 3L reactor at 1‰ (V:V), adjust the pH to 7.5, and wait for the film to mature NH 4 + -N removal experiment....

Embodiment 2

[0048] Embodiment 2: Contrast experiment between hanging curtain type biofilter and other reactors

[0049] A total of 6 barrels of 6L simulated sewage are configured, and the water intake formula is: C 6 h 12 o 6 :33.3mg / L, NH 4 Cl:68.76mg / L (NH 4 +-N: 18mg / L), NaHCO 3 :71.4mg / L, NaHPO 4 : 18.85mg / L, mixed trace element 1ml / L, joins respectively in hanging curtain type biofilter and other No. 2, 3, 4, 5, 6 reactors (volume is all 3L), in No. 2 reactors Large particle size three-dimensional hollow filler (commercially available, cylindrical shape, 1.5cm in diameter, 1cm high, and the material is high-density polyethylene), and in the No. 3 reactor is a disc hollow filler (commercially available, 2.5cm in diameter, with a height of 1cm 0.4cm, the material is high-density polyethylene), in the No. 4 reactor, it is a small particle size three-dimensional hollow filler (commercially available, with a diameter of 1cm, and a height of 0.7cm, and the material is high-density po...

Embodiment 3

[0055] see Figure 4 , a curtain type biofilter, comprising a container, carbon fiber felt 5, inlet pipe 1 and outlet pipe 6; the container is a cuboid, 100cm long, 50cm wide, and 75cm high. Insert 20 sheets of carbon fiber felts side by side in the container, and a water inlet pipe 1 is arranged above the container, and the water inlet pipe is connected with a water distribution pipe 2, and the water distribution pipe 2 is connected with a perforated pipe-type water distributor 3, and the water distributor is located above the carbon fiber felt 5 ; Outlet pipe 6 is located at the bottom of the container.

[0056] Wherein, the specific surface area of ​​the carbon fiber felt 5 is 1300~1500m 2 / m 3 , the thickness is 3mm. Support with hanging curtain support plate 4.

[0057] see Figure 5 , form the circulating aquaculture system with the curtain-type biofilter 7 of the present embodiment, and the recirculating aquaculture system also includes a culture pond 8, a water st...

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Abstract

The invention provides a hanging curtain type biological filtering pool which comprises a container, carbon fiber felt, a water inlet pipe and a water outlet pipe; the carbon fiber felt is inserted into the container side by side at the interval of 2-4 cm, the water inlet pipe is arranged on the upper portion of the container, the water inlet pipe is connected with water distribution pipes, the water distribution pipes are connected with a water distribution device, and the water distribution device is located above the carbon fiber felt; the water outlet pipe is located at the bottom of the container. The invention further provides application of the hanging curtain type biological filtering pool. The hanging curtain type biological filtering pool enables microorganisms to be attached to the carbon fiber felt, stirring of water flow is reduced, the microorganisms can grow more easily in an attached mode, pollutants in water are further removed, and quality of outlet water is improved; meanwhile, an aged biological membrane falls along with water and is removed through a physical filtration system, backwash equipment is not needed, and cost is saved while removal efficiency of ammonia nitrogen and nitrite nitrogen is guaranteed.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a biological treatment technology for ammonia nitrogen and nitrite nitrogen in aquaculture. Background technique [0002] In recent years, my country's aquaculture industry has developed rapidly. By 2012, China's total aquatic product output reached 59.06 million tons, of which aquaculture output was 43.05 million tons, ranking first in the world for 24 consecutive years. Although the scale of aquaculture continues to expand and improve, extensive and semi-intensive aquaculture models are generally adopted in my country, and production is carried out at the expense of consuming water resources and sacrificing the ecological environment. Serious problems such as eutrophication, regional environmental pollution, and rampant breeding biological diseases. [0003] In the process of aquaculture, the residual bait and excrement secretions of aquatic organisms increase the concent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/12C02F101/16
CPCC02F1/001C02F1/006C02F1/32C02F3/1268C02F9/00C02F2101/16Y02W10/10
Inventor 仇天雷周洪玉王旭明高敏韩梅林
Owner BEIJING AGRO BIOTECH RES CENT
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