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Zero discharge of wastewater

Anhui Xinyuan Technology Co., LTD

Project name: Recycling of wastewater in chemical industry
Customer Unit: Anhui Xinyuan Technology Co., LTD
Scheme design: 11.6t/h triple-effect evaporative crystallization system

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Project Introduction
Scheme design: 11.6t/h triple-effect evaporative crystallization system
1. Product scheme: three-effect evaporator + salt crystallization
2. Water quality: COD 60000~80000mg/L       sodium chloride salt content 28%
3. Treatment process: The PH of wastewater is adjusted to neutral with hydrochloric acid, the concentration of Ca2+ and Mg2+ is <50mg/L, the concentration of F- is <10mg/L, the concentration of SS is <50mg/L, the concentration of COD is 60,000-80000mg /L, and the industrial grade sodium chloride and epoxy mother liquor are evaporated, and the epoxy mother liquor is returned to production and reuse.
4. Process difficulties: high salt and high COD, C0D in concentrated crystal slurry reaches more than 1 million, and the particle size of crystalline salt should be controlled at 60-80 mesh
5. Evaporator capacity: 15t/h
6. Evaporation capacity of evaporator: 11.6t/h
7. Evaporator material: 2205 duplex stainless steel

Product Features
The three-effect evaporation crystallization equipment adopts the principle of multi-effect evaporation, and realizes the effective utilization of heat energy by the three evaporators working in series. Each evaporator has an independent heating system and evaporation chamber, and the material is heated and evaporated through three evaporators in turn, and the steam generated is used as the heat source of the next evaporator, transferring heat energy step by step, and finally realizing the full utilization of heat energy.
Project results
1. Industrial grade sodium chloride and epoxy mother liquor are evaporated, and the epoxy mother liquor is returned to production and reuse.
2. The operating cost of a ton of water is about 80 yuan, and the operating cost is controlled reasonably to realize the transformation of resources into treasures.
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