Purification method of heavy metal-nutrient salt combined pollution aquaculture wastewater

A technology for compound pollution and aquaculture wastewater, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of complex process, inconvenient operation and management, optimize the pore structure, avoid secondary pollution, The effect of increasing the adsorption capacity

Inactive Publication Date: 2020-02-07
SHANGHAI OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of this reactor are complex process and inconvenient operation and management

Method used

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  • Purification method of heavy metal-nutrient salt combined pollution aquaculture wastewater
  • Purification method of heavy metal-nutrient salt combined pollution aquaculture wastewater
  • Purification method of heavy metal-nutrient salt combined pollution aquaculture wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0036] 1. Preparation of modified corncob: corncob is first crushed into particles with a particle size of 0.3cm, and the crushed corncob particles are soaked in a 1mg / L sodium hydroxide solution according to a solid-to-liquid ratio of 1g:20ml. Rinse with distilled water until neutral after 12 hours; dry it in an oven at 60°C and dry to constant weight;

[0037] 2. Preparation of modified Enteromorpha: wash fresh Enteromorpha to remove impurities, and air-dry naturally; soak Enteromorpha after air-drying with 0.001% citric acid (solid-to-liquid ratio is 1g: 80ml), adjust the pH of the soaking solution with hydrochloric acid to 2-3, soak for 8 minutes; the modified Enteromorpha is washed with deionized water several times until the pH is neutral; after filtering out the water, dry in the shade to constant weight;

[0038] 3. Mixing of fillers and strengthening film formation: Mix the modified corncobs and modified Enteromorpha at a mass ratio of 10:1, soak the mixed fillers in ...

Embodiment 2

[0046] 1. Preparation of modified corncob: first crush the corncob into particles with a particle size of 0.5cm, soak the pulverized corncob particles in a 1mg / L sodium hydroxide solution according to the ratio of solid-liquid ratio 1g:20ml, Rinse with distilled water until neutral after 12 hours; dry it in an oven at 60°C and dry to constant weight;

[0047] 2. Preparation of modified Enteromorpha: wash fresh Enteromorpha to remove impurities, and air-dry naturally; soak Enteromorpha after air-drying with 0.003% citric acid (solid-to-liquid ratio is 1g: 100ml), adjust the pH of the soaking solution with hydrochloric acid to 2-3, soak for 5 minutes; the modified Enteromorpha enteromorpha was washed with deionized water several times until the pH was neutral; after the water was filtered off, it was dried in the shade to constant weight;

[0048] 3. Mixing of fillers and strengthening film formation: Mix the modified corncobs and modified Enteromorpha at a mass ratio of 15:1, s...

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Abstract

The invention relates to the technical field of water body repairing, in particular to a method for repairing the aquaculture water body polluted by the combination of heavy metals and inorganic compounds. A composite filler is artificially hanged into a membrane and then loaded into a bioreactor; and the heavy metal-nutrient salt combined pollution aquaculture wastewater to be treated is fed fromthe bottom of the reactor by using a countercurrent manner, flows through the composite filler, and flows out from the upper part of the reactor, and a flow rate is 1-5 L/h. The purification method provided by the invention can simultaneously remove heavy metal ions and nitrogen, phosphorus and other nutrients in the aquaculture wastewater, and has low operating cost, convenient management, and quick effects.

Description

technical field [0001] The invention relates to the technical field of water body restoration, in particular to a method for repairing aquaculture water body polluted by heavy metals and inorganic compounds. Background technique [0002] The high-density aquaculture in my country generally has a large amount of bait input and a large amount of drugs. There have been problems such as increasing water pollution load, frequent occurrence of farmed animal diseases caused by environmental deterioration, and the decline in the quality of farmed products, resulting in huge economic losses. Frequent human activities make heavy metal ions and nutrients enter the aquaculture water through various channels. Heavy metals have attracted much attention due to their high enrichment, high toxicity and non-biodegradability. The residue of heavy metals in aquatic products has become a hot issue in the field of water environment research in my country. However, a large amount of nutrients ent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F3/30C02F3/34B01J20/24B01J20/30C02F101/20C02F103/20C02F101/10C02F101/16
CPCB01J20/24C02F1/286C02F3/302C02F3/34C02F2101/105C02F2101/16C02F2101/20C02F2103/20
Inventor 邵留贾瑞丽王月月郑海粟何培民
Owner SHANGHAI OCEAN UNIV
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