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Microbial filler attached with halotolerant bacteria as well as preparation method and application of microbial filler

A technology of microorganisms and salt-tolerant bacteria, applied in the methods of using microorganisms, biochemical equipment and methods, chemical instruments and methods, etc., can solve problems such as unstable operation, and achieve a wide range of applications, strong impact resistance, and stable operation. Effect

Pending Publication Date: 2022-03-11
SHANGHAI WINNER ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a microbial filler with salt-tolerant bacteria attached and its preparation method and application, which are used to solve the problems in the prior art when microorganisms treat high-salt organic wastewater. stability problem

Method used

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  • Microbial filler attached with halotolerant bacteria as well as preparation method and application of microbial filler

Examples

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preparation example Construction

[0026] The invention provides a method for preparing microbial fillers attached with salt-tolerant bacteria, which includes a domestication step. In the domestication step, the microbial fillers that have been filmed are used as domestication objects, and the concentration of the original salt-tolerant bacteria on the microbial fillers is greater than 0%. The original MLSS on the microbial filler is ≥ 5000mg / L, and the saline with increasing salt concentration is used for domestication, and high-efficiency salt-tolerant bacteria are added during the domestication process until the microbial filler has no effect on the water body in the saline with a salt concentration of 3.0wt%. The removal rate of COD reached above 75%, and the MLSS on the microbial filler was ≥ 5000mg / L, and the target product was obtained; the salt concentration range of the brine was 0-3.0wt%, and the salt concentration of the brine increased with C as a gradient , 0wt%<C<1.5wt%.

[0027] Among them, when ...

Embodiment 1

[0036] A preparation method of a microbial filler attached with salt-tolerant bacteria in this embodiment comprises the following steps:

[0037] S1. Preparatory steps: Prepare the microbial filler with film in advance, the concentration of the original salt-tolerant bacteria on the microbial filler is 5%, and the original MLSS on the microbial filler is ≥ 5000mg / L. The microbial filler includes a filler skeleton, which is made of nylon fiber. The filler skeleton made of nylon fiber has the characteristics of high strength, strong toughness, and long life, and can provide a large number of attachment sites for salt-tolerant bacteria. convenient.

[0038] S2, domestication step: take the microbial filler in step S1 as the domestication object, adopt the saline solution with increasing salt concentration gradient for domestication, and add high-efficiency salt-tolerant bacteria in the domestication process until the saline solution with a salt concentration of 3.0wt% Among them...

Embodiment 2

[0045] The only difference between this example and Example 1 is that in this example, in "S2, acclimation step", the ratio of the dosage of high-efficiency salt-tolerant bacteria solution to the water inflow is 0.3mL / L.

[0046] In this example, the time to obtain the target product (microbial filler with salt-tolerant bacteria attached) was 62 days.

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Abstract

The invention relates to the technical field of wastewater treatment, and discloses a microbial filler attached with halotolerant bacteria and a preparation method and application thereof.The preparation method comprises the domestication step, in the domestication step, a biofilm-formed microbial filler is used as a domestication object, the concentration of original halotolerant bacteria on the microbial filler is larger than 0%, and the concentration of the original halotolerant bacteria on the microbial filler is larger than 0%; the method comprises the following steps: carrying out domestication by adopting salt-containing water with increased salt concentration gradient, and adding efficient halotolerant bacteria in the domestication process until in the salt-containing water with 3.0 wt% of salt concentration, the COD removal rate of the microbial filler to the water body reaches 75% or above and the MLSS on the microbial filler is greater than or equal to 5000mg / L, so as to obtain a target product; wherein the salt concentration range of the salt-containing water is 0-3.0 wt%. The halotolerant bacteria with high activity in a high-salt environment can be screened within 65 days, so that the target product can be applied to treatment of high-salt organic wastewater, and the halotolerant bacteria are high in impact resistance and stable and reliable in operation.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a microbial filler attached with salt-tolerant bacteria, a preparation method and application thereof. Background technique [0002] The sources of high-salt wastewater mainly include: thermal power plant desulfurization wastewater, metal smelting wastewater, petrochemical oilfield wastewater, refinery wastewater, stockyard (tailings), landfill leachate and concentrated brine produced by seawater desalination, etc. At present, domestic and foreign methods for the treatment of high-salt wastewater mainly include electrochemical methods, biological methods, membrane separation methods, wet catalytic oxidation methods, incineration methods, and evaporation crystallization methods. However, most of these methods have problems such as high processing costs, poor operation stability, or secondary pollution. For example, the metal plate of the electrochemical method is eas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C12N11/089C12N1/36C02F101/30
CPCC02F3/34C12N11/089C12N1/36C02F2101/30C02F2101/301C02F2209/08C02F2209/10
Inventor 张建鹏张斌超李云峰虞素飞
Owner SHANGHAI WINNER ENVIRONMENTAL TECH
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