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Recycling of alkali sulfate rich waste water by biological pre-treatment with an extreme halophilic organism

A technology for alkali metal sulfates and halophilic microorganisms, which is applied to the treatment of wastewater containing alkali metal sulfates and the field of alkali metal sulfates, and can solve the problems of sodium ion migration hindrance and power consumption increase

Pending Publication Date: 2020-11-13
COVERSTRO INTELLECTUAL PROPERTY GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, power consumption will increase significantly and the migration of sodium ions will be hindered

Method used

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  • Recycling of alkali sulfate rich waste water by biological pre-treatment with an extreme halophilic organism
  • Recycling of alkali sulfate rich waste water by biological pre-treatment with an extreme halophilic organism
  • Recycling of alkali sulfate rich waste water by biological pre-treatment with an extreme halophilic organism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] Example 1: Tolerance of Sodium Sulfate in Combination with Sodium Chloride

[0135] Halobacterium mediterranei (DSM 1411 ) is an extremely halophilic archaea that requires a minimum of 140 g / L NaCl for growth. Optimal growth was reported for a concentration of 170 g / L NaCl. The experiments described in this example should answer the following questions:

[0136] 1) Can HFX tolerate high concentrations of sodium sulfate?

[0137] 2) Can HFX degrade organic components when NaCl in the medium is partially replaced by Na2SO4

[0138] 3) Can HFX degrade components glycerol, phenol and formate in sulfate-rich wastewater

[0139] For part 1) of the experiment, HFX was cultured in a medium containing 150 g / L sodium chloride and sodium sulfate at a concentration of 0 to 100 g / L. In part 2), the sodium chloride in the medium was replaced with sodium sulfate. Because Na 2 SO 4 Contains two sodium molecules, so every mol of NaCl is replaced by 0.5 mol Na 2 SO 4 sub...

Embodiment 2

[0148] Embodiment 2: the change of the sodium sulfate concentration in the medium

[0149] 1) Can halobacteria mediterranean tolerate high concentrations of 50-400 g / L sodium sulfate without any NaCl

[0150] 2) Can HFX degrade organic components (e.g. glycerol, phenol) in sodium sulfate rich medium without any NaCl

[0151] For part 1) of the experiment, instead of sodium chloride, different concentrations of sodium sulfate were added to the synthetic HFX medium. Since the maximum solubility at 37°C is 480 g / L, sodium sulfate is added at a concentration of 50-400 g / L. Glycerol was used as a carbon source at a concentration of 2 g / L. Successful TOC reduction was shown when the metabolism of the cells reduced the glycerol concentration during the 5 days of culture.

[0152] When glycerol was fully degraded at 96 h, one shake flask per duplicate assay was pulsed with 0.1 g / L phenol and 2 g / L glycerol as the second substrate. The second shake flask was pulsed with 2 g / L...

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PUM

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Abstract

The present invention relates to an aqueous composition comprising cells of at least one strain of a halophilic microorganism, and alkali sulfate in a concentration of at least 30 g / l based on the total volume of the aqueous composition. The present invention further relates to a method for treating a waste water, comprising obtaining or providing a waste water, contacting said waste water with cells of at least one strain of a halophilic microorganism, and thereby generating an aqueous composition comprising alkali sulfate in a concentration of at least 30 g / l, and incubating said aqueous composition under conditions which allow for the treatment of the waste water.

Description

[0001] field of invention [0002] The present invention relates to an aqueous composition comprising cells of at least one halophilic microbial strain and an alkali metal sulfate in a concentration of at least 30 g / l, based on the total volume of said aqueous composition. The present invention further relates to a method for treating wastewater comprising alkali metal sulphates comprising obtaining or providing wastewater comprising alkali metal sulphates, contacting said wastewater with cells of at least one strain of halophilic microorganisms, and thereby producing An aqueous composition comprising an alkali metal sulphate at a concentration of at least 30 g / l, and incubating said aqueous composition under conditions allowing the treatment of wastewater. [0003] Background of the invention [0004] Solutions of sodium sulfate are produced in the reaction of many sodium compounds with sulfuric acid or with sulfur dioxide and oxygen. These solutions, as well as solutions of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F1/469C02F101/10C02F101/38
CPCC02F1/4693C02F3/34C02F2101/101C02F2101/38C02F1/58C02F1/461C02F2101/34C02F2101/345
Inventor H·赫克罗特R·韦伯C·赫尔维希N·马勒
Owner COVERSTRO INTELLECTUAL PROPERTY GMBH & CO KG
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