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Purification of Condensed Water in Evaporated Salt Treatment of High Salt Organic Wastewater

In the chemical production, especially in the fine chemical industry such as pesticide, medicine, dye, etc., due to the large use of acid, alkali, organic solvent and reagent in the production, the produced wastewater often contains high salt content and organic matters, which usually needs evaporating salt treatment to separate the salt and water in the wastewater, so as to realize the desalination of the wastewater. However, in the process of salt evaporation, some organic matters in the wastewater which are azeotropic with water will enter into the condensate with the evaporation of water, resulting in the COD of condensate exceeding the standard and accompanied by color, which cannot be discharged or reused. Only after further coefficient improving, can the condensate be discharged to the standard or recycled.

Focusing on the non-polar or weak polar organic molecules which are usually azeotropic with water in the wastewater of pharmaceutical and chemical industry, Sunresin adopts Seplite® XDA series high specific surface macroporous adsorption resin specially developed to remove the non-polar or weak polar organic molecules in the condensate with high precision, reduce COD and chroma, and realize the discharge and reuse of the condensate meeting the standard. The resin with saturated adsorption can be regenerated by steam purging, and the organics in the regeneration liquid can be refined and recovered, so as to reduce the production cost. 

 

Process flow of COD excessive condensate extraction treatment with Seplite® XDA series resin

process-flow-of-cod-excessive-condensate-extraction-treatment-with-seplite-xda-series-resin


 

Adsorption, COD reduction and decolorization effect of Seplite® XDA series resins

adsorption-cod-reduction-and-decolorization-effect-of-seplite-xda-series-resins

Advantages and characteristics of Seplite® XDA series resin in the treatment of COD excess condensate

(1) Resin treatment capacity is large, regeneration is easy, treatment cost is low, and regeneration process will not introduce other reagents and produce secondary pollution. 
(2) The treatment process is simple and reliable, with low requirements for system equipment and personnel operation, and easy to master. 
(3) Low investment and less land occupation. 
(4) The good impact resistance and pollution resistance of the resin make the system have a certain buffer capacity, even if the front-end evaporation equipment fails or the process is adjusted, the effluent quality can still be guaranteed.

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Bio-Pharmaceutical & Life Science
Modern biopharmaceutical technologies typically use biological microbial fermentation...
Chemical Industry
Purification of chemical compounds has become a vital part of most industrial processes.
Drinking Water Treatment
Drinking water is essential to life. Every day every human being has to drink and use water for food preparation.
Food & Beverage Industries
Food is closely related to everyone, and the finishing of food comes from people's relentless pursuit...
Hydrometallurgy & Mining
Hydrometallurgy is a technique for extractive metallugry involving the three general area...
Direct Lithium Extraction (DLE)
Sunresin is the major DLE lithium sorbent producer in China which mainly used for extraction lithium from salar brine and geothermal brine etc with high efficiency.
Industry Water Treatment
There are many uses of water in industry and, in most cases, the used water also needs treatment to render...
Plant Extraction
Plant Extraction is a process to gather the trace bioactive compounds from the tissue of a plant.
VOCs Treatment
With the widespread use of chemical products in the industry, more and more organic...
Wastewater Treatment
Wastewater treatment is the process of converting wastewater into an effluent that can be discharged
Latest News
26
2024 01
 Sunresin has been selected for the Hang Seng China A Specialised & Sophisticated 50 Index
On January 22, Hong Kong's Hang Seng Index Company launched the "Hang Seng China A Specialised & Sophisticated 50 Index", and Sunresin (300487.SZ) was successfully selected as a constituent stock. As of January 12, 2024, the proportion was 2.78%.
27
2023 11
 Sunresin Participates in Morgan Stanley 22nd Annual Asia-Pacific Summit
Sunresin, a leading technology company, was invited to attend Morgan Stanley's 22nd Asia-Pacific Summit in Singapore from November 15th to 16th. This summit is a pivotal conference for institutional investors in the Asia-Pacific region.
25
2023 11
 Sunresin won the 2023 Forbes Asia Top 200 and was invited to attend the award ceremony
On November 21, the Forbes Asia Best Under A Billion Forum & Awards Dinner was held in Manila, Philippines. We are proud to announce that Dr. Gao Yuejing, chairwoman of Sunresin, has been invited to attend the award ceremony and has received for the second time this honor since 2020.

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Sunresin Park,No.135, jinye Road, Xi’an Hi-tech Industrial Development Zone, Shaanxi-710076, China
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+86-29-89182091
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+86-29-89182091
seplite@sunresin.com