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Method for processing aquaculture wastewater containing antibiotics by utilizing plant floating bed

A technology for aquaculture wastewater and antibiotics, which is applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of not paying attention to antibiotics, etc. Direct discharge or reuse, the effect of inhibiting the growth of algae

Inactive Publication Date: 2011-12-21
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these studies are used to reduce conventional pollution factors such as nitrogen, phosphorus and COD in water bodies, but the treatment rate of TOC is 70%. Studies Containing Antibiotics

Method used

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  • Method for processing aquaculture wastewater containing antibiotics by utilizing plant floating bed
  • Method for processing aquaculture wastewater containing antibiotics by utilizing plant floating bed
  • Method for processing aquaculture wastewater containing antibiotics by utilizing plant floating bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Breeding wastewater preparation method: Breeding manure was taken from a large-scale breeding in Jiangning District, Nanjing City, and stored at -20°C after freeze-drying. Cr All lower than 400mg / L), and mixed with sulfadiazine, sulfamethazine, sulfamethoxazole to make the concentration respectively 100μg / L, 100μg / L, 10μg / L, about 60L.

[0021] The polyethylene plastic foam board is used as a carrier, and holes are evenly drilled on it for cutting plants to form a floating bed. The ryegrass Dryan multiflora with a fresh weight of about 270 g was transplanted onto the floating bed carrier. The test site was chosen to be carried out in an outdoor environment, and only a simple plastic shed was built on the water tank to avoid rain. Water samples were taken about once every 7 days on average, and a total of 6 samples were taken. The sampling time is around 10 am, and the sampling volume is about 100-400mL. The water temperature is recorded at the same time as the samplin...

Embodiment 2

[0028] The breeding wastewater preparation method is the same as above.

[0029] The difference between the present embodiment and embodiment 1: the floating bed plant is replaced by the multi-flowered ryegrass of Waseyutaka, and the others are the same as in embodiment 1.

[0030] The results show that the removal effect of sulfonamide antibiotics in aquaculture wastewater is very obvious.

[0031] After 15 days of the experiment, the removal rates of sulfadiazine, sulfamethazine, and sulfamethoxazole in the water planted with ryegrass Waseyutaka reached 96.6%, 88.0%, and 97.3%, respectively. At the end of the experiment, the removal rates of sulfadiazine, sulfamethazine, and sulfamethoxazole reached 98.7%, 99.3%, and 88.8%, respectively. After the experiment, the fresh weight of the ryegrass variety Waseyutaka was 578g; sulfadiazine, sulfamethazine and sulfamethoxazole could be detected in the roots, but only sulfamethazine could be detected in the leaves.

[0032] See Tab...

Embodiment 3

[0036] The breeding wastewater preparation method is the same as above.

[0037] The difference between the present embodiment and embodiment 1: the floating bed plant is changed into the multi-flowered ryegrass that the variety name is Tachimasari. Others are with embodiment 1.

[0038] The results show that the removal effect of sulfonamide antibiotics in aquaculture wastewater is very obvious.

[0039] After 15 days of the experiment, the removal rates of sulfadiazine, sulfamethazine, and sulfamethoxazole in the water planted with ryegrass Tachimasari reached 95.7%, 81.4%, and 96.5%, respectively. At the end of the experiment, the removal rates of sulfadiazine, sulfamethazine, and sulfamethoxazole reached 99.0%, 99.0%, and 89.4%, respectively. After the experiment, the plant weight of the ryegrass variety Tachimasari was 569g; sulfadiazine, sulfamethazine and sulfamethoxazole could be detected in the roots, but only sulfamethazine could be detected in the leaves.

[0040...

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Abstract

The invention discloses a method for processing aquaculture wastewater containing antibiotics by utilizing a plant floating bed, belonging to the field of wastewater pollution treatment. The method comprises the following steps: 1) plant pre-culture: cleaning Italian rye grass, utilizing pre-configured aquaculture wastewater to acclimate and culture for 7-10 days in a laboratory, thus enabling the Italian rye grass to adapt to wastewater; and 2) wastewater treatment: adding prepared aquaculture wastewater containing antibiotics into a cuboid container slot, transplanting the Italian rye grassafter acclimation and culturing to a floating bed carrier, placing the floating bed on the surface of aquaculture wastewater, and staying for 20-35 days. The invention not only can take away a great amount of nitrogen and phosphorus nutrients from aquaculture wastewater, thus inhibiting algae growth, improving water quality, and simultaneously realizing the purpose of directly discharging or recycling aquaculture wastewater. The harvested rye grass also can be used as livestock and poultry feed or used for centralized recycling treatment, and recovery of usable nutrient elements in plant body.

Description

Technical field: [0001] The invention belongs to the field of pollution prevention and control of farm wastewater, and more specifically relates to a method for treating antibiotic-containing breeding wastewater by utilizing a plant floating bed. Background technique: [0002] With the rapid economic development in rural areas of our country, the livestock and poultry breeding industry has become the main source of farmers' income. However, due to the low level of large-scale farming, most of them lack effective waste treatment facilities, so the pollutants produced by livestock and poultry production are often discharged directly. into natural water bodies, resulting in the pollution of surface water and even groundwater. Sulfonamide antibiotics are a class of broad-spectrum antibacterial drugs developed in the 1930s. They have been widely used in the field of livestock and poultry farming. In recent years, adding veterinary antibiotics to livestock and poultry feed for the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32
Inventor 鲜啟鸣户利霞常志洲班莹
Owner NANJING UNIV
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