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A method for treating sebacic acid wastewater by utilizing salt-suitable microorganisms

A technology of salt-suitable microorganisms and sebacic acid, which is applied in the field of using salt-suitable microorganisms to treat sebacic acid wastewater, can solve problems such as difficult engineering, and achieve the effect of speeding up the start-up and debugging process

Active Publication Date: 2018-08-21
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Techniques for sebacic acid wastewater treatment using halophilic bacteria or salinity acclimation are common in laboratory studies but difficult to engineer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1, a kind of method utilizing halosuitable microorganism to process sebacic acid waste water: step comprises:

[0035] (1) Dosing microbial agents: adding salt-suitable microbial flora to the biochemical system;

[0036] (2) Cultivation of saline-suitable microbial degradation flora: the biochemical system cultivates saline-suitable activated sludge or saline-suitable biofilm under the condition of 3%~15% salt concentration;

[0037] (3) Sebacic acid wastewater treatment: The biochemical system uses the cultivated salt-appropriate activated sludge or biofilm to treat sebacic acid wastewater under the condition of 3%~15% influent salt concentration.

Embodiment 2

[0038] Example 2, in the method for treating sebacic acid wastewater by using halo-adaptive microorganisms described in Example 1: the halo-adapted microbial flora is prepared according to the method disclosed in the patent application number CN201310540099.X.

Embodiment 3

[0039] Example 3, in a method for treating sebacic acid wastewater by using salt-suitable microorganisms described in Example 1 or 2: before the sebacic acid wastewater enters the biochemical system, pretreatment is performed to remove phenol, so that the volatile phenol in the wastewater is < 200mg / L.

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PUM

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Abstract

The invention provides a method for treating sebacic acid wastewater by utilizing halophilic microorganisms. The method for treating the sebacic acid wastewater by utilizing the halophilic microorganisms comprises the following steps: adding a compound halophilic microbial agent into a biochemical system, and directly cultivating halophilic activated sludge and a halophilic biological film under the condition that salt concentration of wastewater effluent is 3-15%, so that the halophilic microorganisms adapt to wastewater and synergistically degrade the wastewater, and CODCr, volatile phenol and other pollutants in the wastewater reach the standards after treatment. By adopting the method, high-salt phenol-containing sebacic acid production wastewater with the total salt concentration of 3-15% can be directly and biochemically treated, the content of CODCr is less than 100mg / L, the content of volatile phenol is less than 0.5mg / L, and the treatment cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of high-salt wastewater treatment, in particular to a method for treating sebacic acid wastewater by utilizing salt-suitable microorganisms. Background technique [0002] my country is the country with the largest output of sebacic acid in the world. At present, the cracking production process with castor oil as raw material is mainly used. Each ton of product needs to consume 150-250kg of phenol and produce 25-40 tons of waste water, of which the phenol content is 2000-5000mg / L, pH 2~3, sodium sulfate content 6~10%, COD content 10000~20000mg / L. Sebacic acid wastewater is high-salt, high-phenol, and high-COD wastewater; it is estimated that a 40,000t / a sebacic acid enterprise produces 1.5 million m of wastewater 3 / year. If the waste water is not properly treated, it will cause serious pollution to the environment. [0003] At present, the industry mainly adopts the method of extraction or adsorption to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12C02F9/14C02F101/34
CPCY02W10/10
Inventor 徐军何一群李坤胡聪王开春刘德敏赵焰孙丽静
Owner BLUESTAR LEHIGH ENG INST CO LTD