Microbial preparation in the type of salt resistance and high-effective denitrification for water treatment

A microbial preparation and water treatment technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem that the biochemical system is easily affected by the external environment, the denitrification effect is not ideal, Poor impact resistance and other problems, to achieve good denitrification ability, reduce metal pollution, and achieve the effect of secondary utilization

Inactive Publication Date: 2018-12-18
浙江汉蓝环境科技有限公司
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Problems solved by technology

However, while the traditional biological denitrification technology is widely used, it also has some shortcomings.
For example, nitrifying bacteria are autotrophic bacteria that grow slowly, so they cannot compete with heterotrophic bacteria in activated sludge; biochemical systems are easily affected by the external environment, and their impact resistance is poor, resulting in unsatisfactory denitrification effects, etc.

Method used

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  • Microbial preparation in the type of salt resistance and high-effective denitrification for water treatment
  • Microbial preparation in the type of salt resistance and high-effective denitrification for water treatment

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Embodiment Construction

[0020] The present invention can be better understood from the following examples. However, those skilled in the art will readily understand that the specific material ratios, process conditions and results described in the examples are only used to illustrate the present invention, and should not and will not limit the present invention described in detail in the claims .

[0021] (1) Preparation of microbial preparations

[0022] The Bacillus subtilis preserved on the slant was added to the base medium LB culture solution, and the components of the culture solution were yeast extract 5g / L, peptone 10g / L, and NaCl 10g / L. Put it into a constant temperature shaking shaker at 30°C and 180r / min for 12 hours of activation and culture, and then transfer it to a fermenter containing denitrification medium according to 5% inoculum size for expansion culture. The composition of the culture medium is glucose 5g / L, (NH 4 ) 2 SO 4 2g / L, K 2 HPO 4 0.5g / L, MgSO 4 2g / L, NaCl 10g / ...

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Abstract

The invention discloses a microbial preparation in the type of salt resistance and high-effective denitrification for water treatment. The microbial preparation is composed of: Bacillus subtilis, Pseudomonas denitrificans, Halomonas, and Halophile. The microbial preparation holds excellent denitrification effect even under a high-salt condition, so that limitation in a conventional bio-denitrification method in a high-salt environment is relieved. The preparation is suitable for denitrification of high-salt wastewater with salt concentration being lower than 8%. The preparation has extensive application prospect and excellent social benefit.

Description

technical field [0001] The invention belongs to the technical field of microbial environmental protection, and in particular relates to a salt-tolerant and high-efficiency denitrification type water treatment microbial preparation. Background technique [0002] High-salt wastewater refers to wastewater with a salt content greater than 1% (w / v), and some even exceed 20%. It has a wide range of sources, complex components, and contains a large amount of Cl - , SO 4 2- 、Na + and Ca 2+ and other soluble inorganic salt ions. At present, the treatment methods of high-salt wastewater mainly include physical and chemical methods, biochemical methods and combined processes. Among them, physical and chemical methods include evaporation, membrane separation, ion exchange electrolysis, etc. Although the treatment effect is good, most of them have problems such as high cost and high energy consumption, which seriously restricts the application of physical and chemical methods in th...

Claims

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Application Information

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IPC IPC(8): C02F3/34
CPCC02F3/341
Inventor 李理操欢向超凌亮
Owner 浙江汉蓝环境科技有限公司
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