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Preparation method and application of a composite nano-biomass carbon material

A biomass charcoal, nanotechnology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., to achieve the effect of large cell adsorption capacity, simple process, and increase the effect of adsorption and removal

Inactive Publication Date: 2018-07-31
HOHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: Aiming at the problem of water body pollution caused by intensive aquaculture and sewage discharge, nanotechnology is used to compound the carrier material, and a preparation method and application of a nano-biomass carbon material with strong adsorption function are proposed. The present invention obtains The products can effectively remove suspended solids, nitrogen, phosphorus, heavy metals and other pollutants in aquaculture sewage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] EM stoste, molasses, PAC solid and deionized water were mixed according to the mass percentage of 3%: 5%: 8%: 84%, and it was moved into the reaction bottle, and under airtight conditions, it was put into a constant temperature incubator to ferment for 5 day, set the fermentation temperature to 37°C, and the shaker speed to 150r / min to obtain the EM-PAC compound solution; then the dried rice straw was crushed, passed through a 2mm sieve, and bonded by rice straw powder: kaolin in a stainless steel tank. Agent: the total mass percentage of nano-manganese oxide=90:6:4 is made into a mixture and compacted, covered and sealed, then put into a muffle furnace, and cracked for 60min at 450-550°C; In the dryer, cool to room temperature, grind the prepared nano-biomass charcoal through a 100-mesh sieve, and then form it in an intelligent mode ball forming machine according to nano-biomass charcoal: EM-PAC compound solution = 95%: 5% , the diameter of the ball is controlled betwe...

Embodiment 2

[0033] Mix the EM stock solution, molasses, PAC solid and deionized water at a mass percentage of 5%: 3%: 6%: 86%, transfer it into a reaction bottle, and put it into a constant temperature incubator to ferment for 4 days under airtight conditions , the fermentation temperature is set to be 37°C, and the rotating speed of the shaker is 180r / min to obtain the EM-PAC compound solution; then the dried rice straw is pulverized, passed through a 2mm sieve, and pressed in a stainless steel tank by rice straw powder: kaolin binder : The total mass percentage of nano-manganese oxide=90:6:4 is made into a mixture and compacted, covered and sealed, then put into a muffle furnace, and cracked for 50min at 450-550°C; then the above-mentioned mixture is taken out and put into vacuum drying In the device, cool to room temperature, grind the prepared nano-biomass charcoal through a 100-mesh sieve, and then press nano-biomass charcoal: EM-PAC compound solution = 90%: 10% to form in the intelli...

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Abstract

The invention discloses a preparation method and application of a composite nano biomass charcoal material. Nano biomass charcoal balls for purifying aquaculture wastewater are prepared by compounding EM liquid with an inorganic macromolecular flocculating agent PAC, and immobilizing the compound liquid on a composite carrier obtained by mixing rice stalk powder, nano manganese oxide and kaolin at high temperature. The nano biomass material is simple in preparation process, has good adsorption and flocculation effects on suspended solids in the aquaculture wastewater, has a significant removal effect on suspended solids, ammonia nitrogen, total phosphorus, heavy metals and the like in the wastewater, and has the advantages of rapidly improving water quality and eliminating peculiar smell.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a preparation method and application of a composite nano-biomass carbon material. Background technique [0002] my country's aquaculture production has accounted for about 2 / 3 of the world's aquaculture production. The feed residues put in during the aquaculture process and the pollutants formed by the excrement of fish, shrimp, and crabs have seriously affected the environment of the aquaculture water body, making the water body increasingly Eutrophication has caused more and more harm to the ecological environment of the surrounding waters. According to statistics, the annual water exchange volume of aquaculture ponds in Jiangsu Province is about 30,000 m 3 ha -1 , where SS, COD, BOD 5 , TN and TP net emissions reached 2280, 999, 145, 101, 4.95kg·ha respectively -1 . The vast rural aquaculture in my country is mainly based on natural ponds and artificially excavated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28
CPCB01J20/0222B01J20/20C02F1/283
Inventor 邵孝候秦恒基王明月杨绪毛欣宇朱福新陈立华王夕方
Owner HOHAI UNIV
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