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Acid-tolerant bacterium group and application thereof in treating Fenton acidic effluent

A technology of acid-resistant bacteria and colonies, applied in biological water/sewage treatment, water/sludge/sewage treatment, fungi, etc., can solve the problems of consuming chemical agents and increasing operating costs, and achieve the effect of high efficiency and economical technical means

Active Publication Date: 2019-11-01
THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES
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  • Application Information

AI Technical Summary

Problems solved by technology

Adding alkali to adjust the pH value not only consumes a lot of chemicals, but also increases operating costs

Method used

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  • Acid-tolerant bacterium group and application thereof in treating Fenton acidic effluent
  • Acid-tolerant bacterium group and application thereof in treating Fenton acidic effluent

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Embodiment Construction

[0014] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0015] 1. Screening of acid-resistant bacteria

[0016] Using acidic low-concentration YM medium (initial pH 3.0, without buffer solution; prepared according to 1 / 5 of the concentration of YM medium components, hereinafter referred to as "1 / 5YM"), from the activated sludge of leather sewage treatment plant Screen for acid-resistant microorganisms. After 25 days of screening, the medium became turbid, indicating that the microorganisms multiplied in large numbers, and the pH value rose from 3.0 to 8.1. The screened bacteria were transferred 4 times, and the pH value of 1 / 5YM could be raised from the initial strong acidity to the partial alkalinity. In order to further verify that the screened acid-resistant bacteria have the effect of increasing pH, the acidic effluent of phloroglucinol oxidized by Fenton under the initial neutral pH condition was us...

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Abstract

The invention discloses an acid-tolerant bacterium group and application thereof in treating Fenton acidic effluent, and relates to biological treatment of acidic wastewater. The acid-tolerant bacterium group is screened and obtained from activated sludge of a leather sewage treatment plant, and the acid-tolerant bacterium group is composed of Geotrichum cucujoidarum NS-2 and Phialemoniopsis curvata NS-3; the GeotrichumcucujoidarumNS-2 is saccharomycetes, a bacterial colony of the GeotrichumcucujoidarumNS-2 is hoary, the GeotrichumcucujoidarumNS-2 is closely adhered to a culture medium, and partialhyphaestretch into the culture medium; and the PhialemoniopsiscurvataNS-3 is mucedine, a bacterial colony of the PhialemoniopsiscurvataNS-3is hoary, and partial hyphae stretch into the culture medium. The acid-tolerant bacterium group is applied to advanced treatment in the Fenton acidic effluent.

Description

technical field [0001] The invention relates to biological treatment of acidic wastewater, in particular to an acid-resistant bacteria group and its application in treating Fenton's acidic effluent. Background technique [0002] Fenton is a kind of advanced oxidation technology. The hydroxyl radicals produced can oxidize most organic pollutants at a very high speed. However, Fenton technology has not been widely used in the field of sewage treatment. The main limiting factors include: strong acidic reaction conditions, high dosage Hydrogen peroxide dosing, low utilization rate of hydrogen peroxide, large amount of iron-containing sludge, high treatment cost (Bello M.M, Raman A.A.A, Asghar A.A review on approaches for addressing the limitations of Fenton oxidation for recalcitrant wastewater treatment[J].Process Safety and Environmental Protection, 2019(126):119-140.). Fenton oxidation process can produce some organic acid intermediate products, such as acetic acid, oxalic a...

Claims

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Application Information

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IPC IPC(8): C12N1/16C12N1/14C02F3/34C12R1/645
CPCC02F3/347C12N1/14C12N1/16
Inventor 王勇邵宗泽耿德建
Owner THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES
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