Method for preparing biological microcapsule applied to treatment of ammonia nitrogen and soluble organic substances in water

A technology of dissolved organic matter and microcapsules, which is applied in the field of environmental water treatment and bioengineering, and can solve problems such as microbial instability and water quality safety hazards

Inactive Publication Date: 2013-03-13
TONGJI UNIV
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Problems solved by technology

[0004] The technical problem to be solved by this invention is to provide a method for treating

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  • Method for preparing biological microcapsule applied to treatment of ammonia nitrogen and soluble organic substances in water

Examples

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Embodiment 1

[0015] Example 1: Preparation of novel biological microcapsules:

[0016] (1) Add 5g / L gluconic acid to the yeast nitrogen source base (without amino acids and ammonium sulfate), adjust the pH value to 7 with sodium potassium phosphate buffer, and use it as a medium.

[0017] (2) Add 300 mL of sterilized medium into a 500 mL flask and inoculate 2×10 6 cell / mL live cells of Candida Yeast and a small amount of spores of Penicillium.

[0018] (3) Put the flask into a shaker at 150 rpm and shake at a constant temperature of 28±1°C for 7 days to make hollow biomicrocapsules. Its scanning electron microscope picture is as follows figure 1 shown.

[0019] The effect of treating ammonia nitrogen and dissolved organic matter in water with the obtained biological microcapsules: raw water ammonia nitrogen 1.14 mg / L, COD Mn 5.57 mg / L, pH value 6~7, temperature 25~30℃, dissolved oxygen above 2mg / L, after 12 hours of treatment with the new biological microcapsules, the removal rate ...

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Abstract

The invention relates to a method for preparing a novel biological microcapsule capable of being applied to treatment of ammonia nitrogen and soluble organic substances in water. According to the method for preparing the microcapsule, no chemical crosslinking agent or external material is added as a carrier, but candida is spontaneously combined to an extracellular polymer excreted by fungal hyphae cell aggregation in a natural mode under a special condition, and an appropriate condition is created to induce the intergrowth of hyphomycete and the candida so as to form the biological microcapsule in the shape of a solid microsphere. The novel biological microcapsule can efficiently degrade the ammonia nitrogen and the soluble organic substances in water, can keep the activity of thalli, separates the thalli from the outside poor environment, slows down the influence caused by temperature and pressure, and is favorable for uniform distribution in water, and also favorable for stability in storage and use. The preparation method is simple and feasible, has less influence factors, and has great potential and application value for treating the ammonia nitrogen and the soluble organic substances in the water.

Description

technical field [0001] The invention belongs to the fields of environmental water treatment and bioengineering, and relates to a preparation method of biological microcapsules applied to the treatment of ammonia nitrogen and dissolved organic matter in water. Background technique [0002] At present, my country's drinking water sources generally face the problem of excessive dissolved organic pollutants and ammonia nitrogen in water source water. The traditional process of waterworks has a poor treatment effect on dissolved organic compounds and ammonia nitrogen in raw water, so that the quality of effluent water cannot meet the requirements of "Drinking Water Hygiene" Standard" (GB5749-2006). Biological oxidation treatment is the most economical and effective method to remove dissolved organic pollutants and ammonia nitrogen pollution in raw water. It can not only remove ammonia nitrogen and dissolved organic matter in raw water, but also purify water turbidity, color and ma...

Claims

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Application Information

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IPC IPC(8): C12N11/02C02F3/34
Inventor 史俊邓慧萍韩旭王琳万俊力
Owner TONGJI UNIV
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