Electronic Materials and Polysilicon Production Wastewater Treatment and Dewatering
Industry Background
Wastewater generated during electronic materials and polysilicon production contains high solids content and viscosity, often enriched with organic compounds and chemical additives. The production process is continuous with variable load, placing high demands on dewatering equipment stability, continuous operation capability, and adaptability to high-solid sludge. Treatment systems must operate efficiently within limited space while ensuring dewatered sludge meets requirements for transport and potential recovery.
Technical Approach
The system follows a process route of pre-thickening followed by mechanical dewatering. High-moisture wastewater and sludge are first reduced in volume in the thickening stage before undergoing solid-liquid separation in the dewatering unit. The process is designed for continuous operation, with a compact equipment layout allowing rapid deployment and commissioning within workshops or plant areas. The dewatered sludge has low moisture content, facilitating transportation, incineration, or resource recovery, while minimizing operational and maintenance effort.
The system follows a process route of pre-thickening followed by mechanical dewatering. High-moisture wastewater and sludge are first reduced in volume in the thickening stage before undergoing solid-liquid separation in the dewatering unit. The process is designed for continuous operation, with a compact equipment layout allowing rapid deployment and commissioning within workshops or plant areas. The dewatered sludge has low moisture content, facilitating transportation, incineration, or resource recovery, while minimizing operational and maintenance effort.
On-site Photos
The photos below show a Haibar dewatering unit supplied to a polysilicon plant in Jiangsu, China in 2021. The equipment operated continuously in treating wastewater from electronic materials and polysilicon production, delivering stable dewatering performance with low and uniform sludge moisture content. It met on-site transport and subsequent processing requirements, maintaining reliable operation and good equipment condition.
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