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Preparation method of composite solid carbon source filling material for advanced nitrogen removal of aquaculture waste water

A solid carbon source and wastewater technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low nitrogen removal efficiency, short service life, and slow microbial utilization of biomass materials and other problems, to achieve the effect of simple preparation method, convenient source and mild reaction conditions

Active Publication Date: 2016-04-20
SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are shortcomings such as short service life and slow microbial utilization of some biomass materials, resulting in low nitrogen removal efficiency.

Method used

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  • Preparation method of composite solid carbon source filling material for advanced nitrogen removal of aquaculture waste water
  • Preparation method of composite solid carbon source filling material for advanced nitrogen removal of aquaculture waste water
  • Preparation method of composite solid carbon source filling material for advanced nitrogen removal of aquaculture waste water

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: A kind of preparation method of composite solid carbon source filler

[0032] 1) Prepare 2% glucomannan aqueous solution, stir in a constant temperature water bath at 50°C for 1 hour to dissolve and disperse into a homogeneous solution;

[0033] 2) Add litchi seed powder to the solution obtained in the previous step, the mass ratio of which to glucomannan is 1:3, and continue stirring for 30 minutes; the litchi seed powder can pass through a 200-mesh sieve;

[0034] 3) Add sodium carbonate with 12% glucomannan mass to the mixture in the previous step, and stir for 10 minutes to obtain a composite sol;

[0035] 4) Let the sol stand at room temperature for 1 hour, put it in a 90°C water bath for 3 hours, and obtain a composite gel;

[0036] 5) Put the composite gel in a -20°C refrigerator for 12 hours, take it out and freeze-dry it for 12 hours to obtain the porous composite carbon source filler.

[0037] The obtained composite solid carbon source filler...

Embodiment 2

[0038] Embodiment 2: A kind of preparation method of composite solid carbon source filler

[0039] 1) Prepare 2.5% glucomannan aqueous solution, dissolve and disperse into a uniform solution in a constant temperature water bath at 50°C for 1 hour;

[0040] 2) Add lychee seed powder with a mass ratio of 3:3 to glucomannan, with a particle size of 200 mesh, into the glucomannan solution, and continue stirring for 30 minutes;

[0041] 3) Add sodium carbonate with 10% glucomannan mass, and stir for 10 minutes to obtain a composite sol;

[0042] 4) The sol was allowed to stand at room temperature for 1 hour, and placed in a water bath at 90°C for 3 hours to obtain a composite gel;

[0043] 5) Put the composite gel in a -20°C refrigerator for 12 hours, take it out and freeze-dry it for 12 hours to obtain the porous composite carbon source filler.

[0044] The obtained solid carbon source is inoculated into the domesticated denitrification sludge in the aquaculture system, and th...

Embodiment 3

[0046] Embodiment 3: A kind of preparation method of composite solid carbon source filler

[0047] 1) Prepare 3% glucomannan aqueous solution, dissolve and disperse into a uniform solution in a constant temperature water bath at 50°C for 1 hour;

[0048] 2) Add lychee seed powder with a mass ratio of 3:7 to glucomannan, with a particle size of 200 mesh, into the glucomannan solution, and continue stirring for 30 minutes;

[0049] 3) Add sodium carbonate with 11% glucomannan mass, and stir for 10 minutes to obtain a composite sol;

[0050] 4) The sol was left to stand for 1 hour, and placed in a 90°C water bath for 3 hours to obtain a composite gel;

[0051] 5) Put the composite sol in a -20°C refrigerator for 12 hours, take it out and freeze-dry it for 12 hours to obtain the porous composite carbon source filler.

[0052] The obtained solid carbon source is inoculated into the domesticated denitrification sludge in the aquaculture system, and the aquaculture sewage is adde...

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Abstract

The invention discloses a preparation method of a composite solid carbon source filling material for advanced nitrogen removal of aquaculture waste water. Adding a certain amount of litchi seed powder and sodium carbonate into an aqueous solution of glucomannan with uniformly stirring; allowing to stand at room temperature after heating in water bath; carrying out cooling and refrigeration; finally carrying out freeze drying, in order to obtain the composite solid carbon source filling material. The agriculture and forestry waste litchi seed powder which contains a large amount of starch and the natural polysaccharide substance glucomannan are used in the formula, the preparation method is simple, and the reaction condition is mild; the product can be used as a carbon source and a filling material, and can be degraded completely without environment pollution. An economic long-acting carbon source for treatment of culture waste water with nitrogen removal by biological denitrification or advanced treatment of sewage and nitrogen removal by biological denitrification of underground water is provided.

Description

technical field [0001] The invention relates to a preparation method of a composite solid carbon source filler, in particular to a preparation method of a composite solid carbon source filler for deep denitrification of aquaculture wastewater. Background technique [0002] In recent years, with the rapid development of the aquaculture industry, a large amount of nitrogen-containing wastewater from residual bait and excrement of breeding objects has entered the natural water body. On the one hand, these pollutants have led to the deterioration of the water environment, frequent red tides, and disrupted ecological balance. On the other hand, the non-ionic ammonia nitrogen discharged into the water body is directly toxic to the cultured organisms, will affect their growth and development, and bring serious consequences and huge economic losses to aquaculture. Nitrogen removal by biological method is an economical and effective method. [0003] The aquaculture wastewater has hi...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/2806C02F2101/163C02F2305/06
Inventor 李华周子明张家松李纯厚刘青松董宏标段亚飞
Owner SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI