Preparation of an immobilized microalgae water quality regulator

A regulating agent and microalgae technology, which is applied in the field of preparation of immobilized microalgae water quality regulating agent, can solve the problems of high manual management fee, high cost, secondary pollution, etc., reduce pollution, prolong storage time, and realize effective utilization Effect

Active Publication Date: 2021-04-20
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The preparation process of the water quality regulating agent in the above-mentioned prior art mostly adopts the chemical reagent compounding method, which has problems such as secondary pollution, high manual management fee, and high cost.

Method used

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  • Preparation of an immobilized microalgae water quality regulator
  • Preparation of an immobilized microalgae water quality regulator
  • Preparation of an immobilized microalgae water quality regulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation of immobilized microalgae water quality control agent, comprises the following steps:

[0028] (1) The shells are puffed in a vacuum tube furnace at 600°C for 2 hours, polished and crushed to the nanometer level; the high-temperature puffed shells become a kind of biochar, which is a new type of environmental functional material with developed pore structure and huge The specific surface area can not only absorb heavy metals and organic pollutants in wastewater, but also be used as a microbial carrier; shell powder with nanometer size is an excellent carrier;

[0029] (2) Mix shell powder with 30mL of 1% potassium carbonate solution, which contains 3% nicotinamide and 0.5% phenyl n-butyl ether in mass concentration, after hydrothermal modification at 160°C for 24h Suction filtration and drying, set aside; weakly alkaline potassium carbonate solution can be mixed with CaO, SiO in shell powder 2and other components react to form soluble salts, which...

Embodiment 2

[0033] The shells were puffed in a vacuum tube furnace at 600°C for 2 hours, ground and crushed to the nanoscale; 30 mL of 1% potassium carbonate solution was used as a modifier, and the potassium carbonate solution contained 3% nicotinamide and 0.5 % phenyl n-butyl ether, hydrothermally modified shell powder at 160°C for 24 hours, then suction-filtered and dried, and set aside; mixed L-amino acid with shell powder, added L-mannitol and chlorogenic acid, and ultrasonicated at 60°C for 30 minutes. Centrifuge, wash with water until neutral, and then vacuum-dry the solid solute for 24 hours; the mass ratio of L-amino acid to shell powder is 1:1, and the L-amino acid is arginine and lysine, and the mass ratio of the two is 1:2. The volume of mixed equal volumes of mannitol and chlorogenic acid is 50mL; take 100mL of chlorella culture solution grown in the logarithmic growth phase, add 0.2g of shell powder, 20mL of tea extract, 0.5g of sodium alginate and 2mL of 3% Glycerol is mixe...

Embodiment 3

[0035] The shells were puffed in a vacuum tube furnace at 600°C for 2 hours, ground and crushed to the nanoscale; 30 mL of 1% potassium carbonate solution was used as a modifier, and the potassium carbonate solution contained 3% nicotinamide and 0.5 % phenyl n-butyl ether, hydrothermally modified shell powder at 160°C for 24 hours, then suction-filtered and dried, and set aside; mixed L-amino acid with shell powder, added L-mannitol and chlorogenic acid, and ultrasonicated at 60°C for 30 minutes. Centrifuge, wash with water until neutral, and then vacuum-dry the solid solute for 24 hours; the mass ratio of L-amino acid to shell powder is 1:1, and the L-amino acid is arginine and lysine, and the mass ratio of the two is 1:2. The volume of mixed equal volumes of mannitol and chlorogenic acid is 50mL; take 100mL of chlorella culture solution grown in the logarithmic growth phase, add 0.2g of shell powder, 20mL of tea extract, 0.5g of sodium alginate and 2mL of 3% Glycerol is mixe...

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Abstract

The invention discloses a preparation method of immobilized microalgae. The modified shell powder is used to modify the amino acid to immobilize the microalgae according to the principle of electric charge attraction. The specific steps are as follows: A. Vacuum expand the shells and crush them into nano-scale powders; B. Hydrothermally modify the shell powder with potassium carbonate and filter and dry it for later use. The potassium carbonate solution contains a certain mass concentration of nicotinamide and phenyl n-butyl ether; C. Ultrasonic modification of shell powder with L-amino acid supplemented with L-mannitol and chlorogenic acid; D. Mixing and centrifuging the chlorella culture solution with shell powder, tea extract, sodium alginate, and glycerin , and extract excess water to prepare the immobilized microalgae water quality regulator. The method is simple in operation and low in preparation cost, and the obtained immobilized microalgae has the advantages of good immobilization effect, long storage time of the microalgae, high waste water treatment efficiency, effective prevention of secondary pollution and the like.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to the preparation of an immobilized microalgae water quality regulator. [0002] technical background [0003] Fresh water resources are most precious to life on earth, however, the pollution of groundwater and surface water is considered to be the most polluted water source in the world. In China, more than 200 million people are estimated to still use unsafe water sources. Increased application of nitrogen and phosphorus fertilizers in China has greatly increased crop yields over the past few decades. While not all phosphorus applied to cropland is taken up by plants or retained in the soil, some of it reaches surface water and causes eutrophication. , and phosphorus enrichment is the main cause of damage to many freshwater ecosystems. [0004] At present, there are three main types of remediation technologies for polluted water bodies: 1) physical methods; 2) chemical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F1/28C02F101/10C02F101/16
CPCC02F1/281C02F3/322C02F2101/105C02F2101/16
Inventor 纪丽丽魏丹艺姜东娇宋文东郭健蔡璐王亚宁张海龙
Owner ZHEJIANG OCEAN UNIV
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