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Ecological farming equipment of fishes and shrimps

An ecological farming, fish and shrimp technology, applied in biological treatment devices, fish farming, biological water/sewage treatment, etc., can solve the problems of no patents and reports, reduce wastewater discharge, improve survival rate and output, reduce The effect of pollution

Active Publication Date: 2019-11-08
陕西绿盾环境工程研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

About using Ag / TiO 2 / PVDF membrane is assembled into a fish and shrimp ecological breeding device for fish and shrimp ecological farming, especially the fish and shrimp SPF nursery ecological breeding, so far no relevant patents and reports have appeared

Method used

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  • Ecological farming equipment of fishes and shrimps
  • Ecological farming equipment of fishes and shrimps
  • Ecological farming equipment of fishes and shrimps

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] The Ag / TiO 2 The preparation method of / PVDF modified film comprises the steps:

[0039] a. PVDF resin powder is dissolved in a solvent, and the solvent is added while stirring evenly to obtain a uniform liquid;

[0040] b. Add nano-Ag and nano-TiO to the homogeneous solution obtained in step a 2 , add dispersant immediately, mix thoroughly and then add pore forming agent;

[0041] c. The solution obtained in step b is defoamed after standing at 25-30°C for 1-3 days;

[0042] d. The defoaming solution obtained in step c is prepared in a membrane machine at a temperature of 15-30°C and a humidity of 60-80% to obtain a reinforced hollow fiber membrane, which is the Ag / TiO 2 / PVDF modified membrane.

[0043] Most preferably, Ag / TiO 2 The components and contents of the PVDF modified film are calculated by mass percentage: 16% for PVDF, 75% for solvent N-N dimethylacetamide, 1% for nano Ag, and 1% for nano TiO 2 1.7%, the pore-forming agent PVP is 3.8%, and the dispersa...

Embodiment 1

[0121] In order to determine nAg / TiO 2 Nano-nAg / TiO in Modified PVDF Ultrafiltration Membrane 2 Effect of mass ratio on contact angle of modified film, choose nAg:TiO 2 = 1:1.0, 1:1.3, 1:1.5, 1:1.7 and 1:1.9 mass ratio, the contact angle test is as follows in Table 1.1.

[0122] Table 1.1 nAg:TiO 2 Changes in contact angle between modified membranes with different mass ratios and ordinary PVDF membranes

[0123]

[0124] As can be seen from Table 1.1, with nAg:TiO 2 The increase in the mass ratio is first reduced to nAg:TiO 2 When =1:1.7, the contact angle is 60.15, which is the smallest value, and the contact angle is 12.72 lower than that of ordinary PVDF film, nAg:TiO 2 The contact angles of modified PVDF with different mass ratios are lower than those of non-modified films.

Embodiment 2

[0126] In order to determine nAg / TiO 2 nAg / TiO in Modified PVDF Ultrafiltration Membrane 2The effect of the optimal mass ratio on the surface roughness of the modified film, the preferred mass of PVDF is 16%, the preferred mass of N-N dimethylacetyl is preferably 75%, the preferred mass of sodium hexametaphosphate is 2.5%, the preferred mass of PVP is 3.8%, and nAg is selected : TiO 2 =1: 1.0, 1: 1.3, 1: 1.5, 1: 1.7 and 1: 1.9 mass ratio prepare series film, its roughness is as follows table 2.1.

[0127] Table 2.1 nAg:TiO 2 Roughness changes between modified membranes with different mass ratios and ordinary PVDF membranes

[0128]

[0129] It can be seen from Table 2.1 that the roughness varies with nAg / TiO 2 The mass ratio shows a certain change trend, but one thing is certain, the roughness of the modified membrane is increased compared with the ordinary PVDF film, and the roughness shows a certain change trend because of the nanometer nAg / TiO 2 The nano-scale parti...

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Abstract

The invention relates to ecological farming equipment of fishes and shrimps, comprising a sand filter, a type I MBR (membrane bioreactor), a fish-shrimp farming pond, a fish-shrimp hatching pond and atype II MBR which are connected in sequence. Sea water from outside is filtered by the sand filter before entering the type I MBR, the fish-shrimp farming pond, the fish-shrimp hatching pond and thetype II MBR; the sea water is then treated by the type II MBR before reflowing into the sand filter; the cycle repeats; membrane modules in the type I MBR and the type II MBR are made with Ag / TiO2 / PVDF modified membranes. Compared with traditional fish-shrimp farming modes, the ecological farming equipment of fishes and shrimps helps effectively control bacterial and viral damage to fishes and shrimps, increase the survival rate and yield of fishes and shrimps, decrease the usage of fish-shrimp farming disinfects and antibiotics to prevent and treat diseases, and further increase the quality of farmed fishes and shrimps.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a fish and shrimp ecological cultivation device. Background technique [0002] Penaeidae is the main species of aquaculture in the world, which includes 6 genera and 29 species. Among them, Litopenaeus vannamei, Penaeus monodon and Fenneropenaeus chinensis are the three main prawn species cultured in my country. my country's coastal fish farming includes sea bream, grouper, cobia and other economic marine fish farming. Belong to one of famous and precious marine fish in the world as grouper, in my country, grouper culture has a culture history of more than 40 years. Today, my country's coastal fish and shrimp aquaculture models adopt intensive and efficient farming models, such as shrimp farming models in high-level ponds or plastic film farming models, and fish farming models adopt cage culture or high-level pond ecological farming. Since the 21st century, wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K63/00A01K61/17A01K61/80A01K63/04C02F9/14C02F103/20
CPCA01K63/00A01K61/17C02F1/001C02F3/1268A01K61/80A01K63/04C02F2103/20C02F2203/006C02F2301/08C02F2209/005Y02A40/81
Inventor 潘忠成陈豪周晶晶邓子新李蒲民
Owner 陕西绿盾环境工程研究院有限公司
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