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What are the applicable ranges of low-temperature evaporators?

Date:2025-11-27 Hits:13

1、 Scope of application divided by industry scenario

1. Chemical industry

Applicable wastewater types: high salt organic wastewater (with a salt content of 5% -20%), fine chemical production wastewater, pesticide chemical wastewater, dye chemical wastewater, coal chemical high salt wastewater, etc;


Core requirement adaptation: To treat high concentration COD (above 10000mg/L), recalcitrant organic matter, salts (sodium chloride, sodium sulfate, ammonium chloride, etc.) in wastewater, achieve wastewater reduction (reduce the water content of concentrated solution to 5% -10%), salt crystallization recovery, avoid secondary pollution in traditional treatment processes, and be compatible with industrial waste heat recovery and utilization of chemical enterprises to reduce energy consumption costs.


2. Electroplating/surface treatment industry

Applicable wastewater types: wastewater containing heavy metals (chromium, nickel, copper, zinc, cadmium, etc.), electroplating rinse wastewater, anodizing wastewater, phosphating wastewater, etc;


Core requirement adaptation: Targeted separation of heavy metal ions and moisture in wastewater, distilled water can be reused for rinsing processes (conductivity ≤ 10 μ S/cm), concentrated solution can be disposed of in compliance or recycled as a resource after solidification treatment, meeting the "zero emission" and water resource recycling needs of the electroplating industry, while avoiding the risk of heavy metal volatilization caused by high temperatures.


3. Electronics/Semiconductor Industry

Applicable wastewater types: semiconductor cleaning wastewater, PCB board etching wastewater, photoresist wastewater, electronic component rinsing wastewater, etc;


Core requirement adaptation: To meet the high purity requirements in wastewater treatment (to avoid residual pollutants affecting product quality), achieve the reuse of ultrapure water (in compliance with electronic grade water standards), remove trace heavy metals, organic matter, and salts from wastewater, and adapt to the production requirements of "low pollution, high water conservation" in the electronics industry.


4. Food/Beverage Industry

Applicable wastewater types: high concentration organic wastewater from food processing (such as slaughter, brewing, dairy wastewater), juice concentration wastewater, soy sauce/vinegar production wastewater, sugar production wastewater, etc;


Core requirement adaptation: Low temperature (40-60 ℃) treatment can avoid damaging the organic components in wastewater, achieve wastewater reduction, and recover usable resources such as sugar and protein in wastewater. Distilled water can be reused for production cleaning or greening, meeting the environmental protection and resource recycling requirements of the food industry.


5. Pharmaceutical industry

Applicable wastewater types: raw material pharmaceutical production wastewater, pharmaceutical intermediate wastewater, pharmaceutical rinse wastewater, antibiotic wastewater, etc;


Core requirement adaptation: Treat high concentration organic solvents, drug residues, and salts in wastewater. Low temperature processes can avoid the volatilization and deterioration of drug components. Concentrates can be disposed of according to regulations to reduce environmental risks. Distilled water can be reused for production or laboratory use, meeting strict environmental and hygiene standards in the pharmaceutical industry.


6. New energy/new materials industry

Applicable wastewater types: lithium battery production wastewater (including lithium, cobalt, nickel, etc.), photovoltaic module cleaning wastewater, new energy material synthesis wastewater, etc;


Core requirement adaptation: Separate electrolytes, heavy metals, and organic solvents from wastewater to achieve water resource reuse and valuable metal recovery (such as lithium salt recovery from lithium battery wastewater), and adapt to the development concept of "green production and resource recycling" in the new energy industry.


7. Printing and dyeing/textile industry

Applicable wastewater types: printing and dyeing wastewater, textile rinsing wastewater, chemical fiber production wastewater, etc;


Core requirement adaptation: To treat high chromaticity, high COD, and salts (such as dyeing powder and salt) in wastewater, reduce the chromaticity and pollutant concentration after wastewater treatment, reuse distilled water for rinsing process, reduce fresh water consumption, and avoid the influence of dye decomposition caused by high temperature on treatment effect.


8. Other industries

Centralized wastewater treatment in electroplating parks: adapted to the mixed treatment of different types of wastewater from different enterprises, achieving centralized reduction and standard discharge;


Hazardous waste disposal center: deals with hazardous waste leachate and high concentration wastewater generated during the hazardous waste disposal process, reducing the amount and cost of hazardous waste disposal;


Desalination of seawater/brackish water: suitable for desalination of seawater in islands and coastal industrial parks, or purification of brackish water in inland areas, providing low-cost freshwater supply;


Automotive manufacturing industry: treating coating wastewater and component cleaning wastewater to achieve water resource reuse and pollutant reduction.


2、 Scope of application divided by wastewater characteristics

1. High salt wastewater

Applicable conditions: Salt content of 3% -25%, including single or mixed salt solutions such as sodium chloride, sodium sulfate, potassium chloride, ammonium chloride, etc., can achieve salt crystallization separation and recovery, and solve the problem of salt precipitation blockage in traditional evaporation equipment;


Typical scenarios: Chemical high salt wastewater, seawater desalination, salt chemical wastewater, etc.


2. High COD wastewater

Applicable conditions: COD concentration above 5000mg/L, including wastewater with high organic pollutant content and poor biodegradability, can be concentrated and separated through low-temperature evaporation to reduce the subsequent biochemical treatment load;


Typical scenarios: pharmaceutical wastewater, food processing wastewater, fine chemical wastewater, etc.


3. Wastewater containing heavy metals

Applicable conditions: Wastewater containing heavy metal ions such as chromium, nickel, copper, zinc, cadmium, and lead, with a concentration range of 10-1000mg/L, can achieve efficient separation of heavy metals from water and avoid heavy metal pollution;


Typical scenarios: electroplating wastewater, electronic wastewater, metallurgical wastewater, etc.


4. Wastewater containing organic solvents

Applicable conditions: Wastewater containing organic solvents such as ethanol, acetone, methanol, and ethyl acetate can be recovered by low-temperature evaporation of organic solvents (with a purity of over 90%), or wastewater can be reduced for disposal;


Typical scenarios: pharmaceutical wastewater, chemical synthesis wastewater, printing wastewater, etc.


5. Low temperature sensitive wastewater

Applicable conditions: Wastewater containing thermosensitive substances (such as proteins, enzymes, pharmaceutical ingredients, volatile organic compounds) should avoid high temperatures that can damage the active ingredients or cause the volatilization of pollutants;


Typical scenarios: food wastewater, pharmaceutical wastewater, biochemical wastewater, etc.


3、 Scenario description not applicable

Wastewater containing high concentration suspended solids (SS ≥ 5000mg/L) and not pre treated: a large amount of suspended solids needs to be removed through pre-treatment such as sedimentation and filtration to avoid equipment blockage;


Wastewater containing high concentrations of corrosive substances (such as concentrated hydrochloric acid and concentrated nitric acid) that have not been neutralized: neutralization treatment must be carried out first, otherwise it will corrode equipment materials (conventional equipment materials are 316L stainless steel, special corrosive wastewater should use materials such as Hastelloy alloy);


Wastewater containing a large amount of oil and not demulsified: It is necessary to first remove oil and fat through pretreatment such as demulsification and air flotation to avoid oil adhesion affecting evaporation efficiency.