Winsonda Skid-mounted Wastewater Treatment: Aiding Enterprises with Sewage Problems

At a time when the environmental protection industry is booming, there is a company that focuses on the comprehensive utilization of hazardous waste (hereinafter referred to as “the company”), which is constantly exploring and moving forward in the field of environmental services. With professional technology and perfect disposal lines, it is committed to contributing to environmental protection. However, in terms of wastewater treatment, the company has also faced many challenges.

Enterprise wastewater treatment difficulties and original disposal method disadvantages

The company has multiple comprehensive utilization and disposal lines: comprehensive utilization of waste packaging container cleaning; harmless disposal of waste liquid; comprehensive utilization of organic resin; comprehensive utilization of waste activated carbon regeneration; sludge disposal and recycling. The disposal range is wide, and the annual total disposal capacity is considerable, reaching 185,000 tons and 500,000 waste packaging containers per year. However, in the wastewater treatment link, especially the disposal of three-effect evaporation mother liquor, problems gradually emerged. The company originally used a three-effect evaporator to concentrate the original liquid, and then used a dryer to crystallize the mother liquor. However, this traditional process brought a series of pain points. The disposal efficiency of the back-end dryer is low and cannot meet the needs of large-scale production of the company. When the front-end triple-effect evaporator treats high-salt waste liquid, the heat exchanger frequently encounters scaling and blockage problems due to the analysis of salt in the waste liquid. Blockage occurs every 20 days, and each time the blockage occurs, the machine has to be shut down for 3-5 days for maintenance, which not only takes a lot of time, but also costs a certain amount of money for each maintenance, which brings a certain burden to the company. Moreover, the concentration ratio of the triple-effect evaporator is only 40%-50%, resulting in a large amount of mother liquor being discharged. At the same time, a large amount of waste gas generated during the evaporation process requires the installation of an additional waste gas collection system for centralized treatment, further increasing the company’s operating costs and environmental pressure.

Introduction and implementation of Winsonda’s solution

Faced with these difficulties, Winsonda’s solution brought new hope to the company. The company introduced the LT-ZQ-500 evaporator, which adopts the filtration principle of steam crystallization and has a processing capacity of 10T/D. The evaporator began operation at the end of 2024 and applied the skid-mounted wastewater treatment system process. To ensure the feasibility and effectiveness of the scheme, Winsonda conducted small and medium tests before implementation and achieved a series of data results.

Presentation and analysis of small and medium test data

Small test data

In terms of wastewater indicators, the pH value of the original solution is between 6 and 7, the chemical oxygen demand (COD) is as high as a certain value, and the dissolved solids (TDS) reach a high level. The pH value of the treated effluent becomes 10-11, COD is greatly reduced, and TDS also decreases significantly. This shows that the evaporator is effective in reducing the pollutant content in wastewater.

During the evaporation process, the temperature is maintained at 65℃, the vacuum degree is between -95 and -98KPa, the concentration ratio of the concentrate reaches 57.2%, and the evaporation time is 45 minutes. From the experimental process, the high-salt wastewater has an initial appearance of yellow and turbid water, but only slight bubbles are generated during the evaporation process, and the process is stable. The final effluent state is clear and transparent, and there are a lot of kettle residues in the kettle, which can be cleaned normally. Through comprehensive analysis of the results of the small test, it is concluded that the water sample is very suitable for Winsonda’s low-temperature crystallization evaporator.

Pilot data

The test aims to reduce the amount of wastewater and treat salt-containing wastewater. The wastewater is yellow in color, has a light odor, and after pH adjustment, foam will be generated when the raw water is shaken. When the evaporator is running, foam will be generated in the evaporation tank, so a small amount of defoaming agent needs to be added, and the equipment is in a stable operating state.

The effluent color is yellow, with a slight pungent smell, and there is a slight foam when shaking. The crystal color is yellower, and it is bulk particles when discharged. After being placed for a period of time, it will clump and smell bad. During the evaporation process, more crystal salt will adhere to the shaft, but it will be diluted after the liquid is added. The test summary shows that the raw water is yellow and has a slight odor after pH adjustment, less foam is generated during the evaporation process, and the effluent is overall yellow and has a faint odor.

Plan	Salty Wastewater	Test Time
Purpose Of The Test	Reduction requirements are high
Waste Liquid Pictures	<p1-1>
Wastewater Description	1. The waste liquid is yellow in color and has a light odor. It has been PH adjusted (p1-1) 2. Foam is generated when the raw water is shaken
Evaporator Operation Photos	<p2-1>
Operation Status Description	1. When the evaporator is running, foam is generated and a small amount of defoaming agent will be added 2. Equipment operating status (p2-1)
Water Pictures	<p3-1>
Water Output Description	1. The water is yellowish in color and has a slight pungent smell (p3-1). Slight foam is produced when shaken.
Concentrate (crystallization) pictures	<p4-1>
Description Of Concentrate (crystallization)	1. The crystals are yellow in color and are discharged as loose particles. They will clump after being left for a period of time and have a bad smell (p4-1)
Other Images	<p5-1>
Other Description	1. (p5-1) Comparison of crystallized water output from equipment 2. During the evaporation process, a lot of crystallized salt adheres to the shaft and will be diluted after entering the liquid
Experimental Summary	1. The raw water turns yellow after pH adjustment and has a slight odor 2. There is less foam during evaporation 3. The outlet water turns yellow and has a slight odor

Customer comprehensive evaluation

After a period of operation, Winsonda’s skid-mounted wastewater treatment system LT-ZQ-500 has performed well in the application of this enterprise. The treatment effect has met the company’s expectations, and the operation process is stable and reliable, solving the company’s long-standing wastewater treatment problem. The customer’s high recognition of the system has led the company to consider adding a skid-mounted wastewater treatment system LT-ZQ-1500 in future planning to further improve wastewater treatment capabilities and meet the company’s growing needs, while also making greater contributions to environmental protection. This successful case not only demonstrates the advantages of Wisonda’s solutions, but also provides a useful reference and reference for companies in the same industry in the selection of wastewater treatment technologies.