Method for treating wastewater generated during production of 12-hydroxy stearic acid

A technology for the production of hydroxystearic acid and waste water, which is applied in natural water body treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., and can solve the problem that enterprises cannot bear, the treatment effect is not ideal, and the value of material is obtained Issues such as reasonable and effective utilization are not met, so as to achieve a high degree of overall automation, enhance product competitiveness, and achieve sustainable development

Active Publication Date: 2012-10-31
SHANDONG TIANXING BIOTECH
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Problems solved by technology

There are many deficiencies in this treatment method. On the one hand, valuable substances such as glycerin cannot be used rationally and effectively, resulting in waste of resources and reduced revenue; on the other hand, the presence of glycerin and other substances greatly increases the difficulty of wastewater treatment The treatment effect is very unsatisfactory, and the standard discharge cannot be achieved, and the treatment cost is extremely high, which the enterprise cannot afford, which affects the normal production. The high treatment cost makes this treatment process unable to be popularized and used in the industry

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  • Method for treating wastewater generated during production of 12-hydroxy stearic acid
  • Method for treating wastewater generated during production of 12-hydroxy stearic acid

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[0036] Attached below figure 1 The production wastewater treatment method of 12-hydroxystearic acid provided by the present invention will be described in detail below.

[0037] As attached figure 1 As shown, a 12-hydroxystearic acid production wastewater treatment method, the specific treatment process includes the following two parts:

[0038] The first part is the recycling treatment of wastewater from the acid hydrolysis process. The specific operation steps include:

[0039] A. Acid treatment of wastewater from the acid hydrolysis process: 1) Use a submerged pump to transport the acid-containing water in the pool to the acid treatment tank; 2) Heat to keep the temperature of the material liquid at 50°C, and remove it in a static state Suspended impurities on the upper part of the water surface; 3) Stir the material liquid with compressed air, add 48% liquid caustic under stirring, adjust the pH value of the material liquid to 4; 4) Add the purifying agent ferric chloride, and react

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Abstract

The invention provides a method for treating wastewater generated during production of 12-hydroxy stearic acid. The method comprises the following steps: firstly, conducting acid treatment, alkali treatment and evaporation on wastewater generated in an acid hydrolysis process to extract glycerin water and sulfate sodium salt, and distilling, decoloring and filtering the glycerin water to obtain glycerin, wherein the evaporated condensate is recycled as process water; and then carrying out neutralization treatment, anaerobic treatment, facultative anaerobic treatment, aerobic treatment, filtration and MBR membrane method treatment on wastewater generated in a washing process and residual wastewater after the first treatment, so as to that the water quality achieves the recycling and the discharge standard. Compared with the prior art, the method has the advantages that the integrated automation degree is high, the production efficiency is high, the labor intensity is low, the quantities of labor needed is small, the energy-saving effect is remarkable, wastewater generated during production of 12-hydroxy stearic acid is treated effectively, the production cost is lowered, the wastewater is guaranteed to be up to the discharge standard, the pollution is prevented effectively, and the ecological environment is protected.

Description

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Claims

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Application Information

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Owner SHANDONG TIANXING BIOTECH
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