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A platform for research: civil engineering, architecture and urbanism
Desulfurization wastewater zero discharge method and system for power plant
The invention provides a desulfurization wastewater zero discharge method and system for a power plant. The system comprises a desulfurization tower, a desulfurization wastewater collection pool, a sand filtration system, a flue heat exchange system, a flash evaporation system, an evaporation mother liquor collection box and a flash evaporation mother liquor solidification system which are connected in sequence. The flash evaporation mother liquor curing system comprises a homogenizing device, a forming device and a curing device. Wastewater discharged from a desulfurizing tower is filtered and heated and then enters the flash evaporation system, a filler is placed in the flash evaporation mother liquor curing system, the filler and the flash evaporation mother liquor flowing out of the flash evaporation mother liquor collecting box are uniformly stirred and then molded and cured, and a cured body capable of being used for pavement bricks is prepared. The desulfurization wastewater zero discharge method and system for the power plant are designed. Waste heat of flue gas behind a dust removal system is fully utilized, flash evaporation is carried out on desulfurization wastewater, agel phase in the filler wraps heavy metal ions of flash evaporation mother liquor, a product with low solubility is generated, a solidified body with high strength and toughness is formed, and potential secondary pollution caused by the fact that miscellaneous salt in the desulfurization wastewater enters fly ash is avoided.
本发明提供一种用于电厂的脱硫废水零排放方法及系统，包括依次连接的脱硫塔、脱硫废水收集池、砂滤系统、烟道换热系统、闪蒸系统、蒸母液收集箱和闪蒸母液固化系统。闪蒸母液固化系统包括均化装置、成型装置和养护装置。脱硫塔排出的废水经过滤加热后进入闪蒸系统，填充料放入闪蒸母液固化系统内，与闪蒸母液收集箱流出的闪蒸母液搅拌均匀后成型养护，制成可用于路面砖的固化体。本发明设计了一种用于电厂的脱硫废水零排放方法及系统，充分利用了除尘系统后烟气的余热，对脱硫废水进行闪蒸，填充料中的凝胶相将闪蒸母液的重金属离子包裹，并生成溶解度小的产物，形成高强度和韧性的固化体，避免了脱硫废水中杂盐进入粉煤灰造成的潜在二次污染。
Desulfurization wastewater zero discharge method and system for power plant
The invention provides a desulfurization wastewater zero discharge method and system for a power plant. The system comprises a desulfurization tower, a desulfurization wastewater collection pool, a sand filtration system, a flue heat exchange system, a flash evaporation system, an evaporation mother liquor collection box and a flash evaporation mother liquor solidification system which are connected in sequence. The flash evaporation mother liquor curing system comprises a homogenizing device, a forming device and a curing device. Wastewater discharged from a desulfurizing tower is filtered and heated and then enters the flash evaporation system, a filler is placed in the flash evaporation mother liquor curing system, the filler and the flash evaporation mother liquor flowing out of the flash evaporation mother liquor collecting box are uniformly stirred and then molded and cured, and a cured body capable of being used for pavement bricks is prepared. The desulfurization wastewater zero discharge method and system for the power plant are designed. Waste heat of flue gas behind a dust removal system is fully utilized, flash evaporation is carried out on desulfurization wastewater, agel phase in the filler wraps heavy metal ions of flash evaporation mother liquor, a product with low solubility is generated, a solidified body with high strength and toughness is formed, and potential secondary pollution caused by the fact that miscellaneous salt in the desulfurization wastewater enters fly ash is avoided.
本发明提供一种用于电厂的脱硫废水零排放方法及系统，包括依次连接的脱硫塔、脱硫废水收集池、砂滤系统、烟道换热系统、闪蒸系统、蒸母液收集箱和闪蒸母液固化系统。闪蒸母液固化系统包括均化装置、成型装置和养护装置。脱硫塔排出的废水经过滤加热后进入闪蒸系统，填充料放入闪蒸母液固化系统内，与闪蒸母液收集箱流出的闪蒸母液搅拌均匀后成型养护，制成可用于路面砖的固化体。本发明设计了一种用于电厂的脱硫废水零排放方法及系统，充分利用了除尘系统后烟气的余热，对脱硫废水进行闪蒸，填充料中的凝胶相将闪蒸母液的重金属离子包裹，并生成溶解度小的产物，形成高强度和韧性的固化体，避免了脱硫废水中杂盐进入粉煤灰造成的潜在二次污染。
Desulfurization wastewater zero discharge method and system for power plant
一种用于电厂的脱硫废水零排放方法及系统
SU SHUANGQING (author) / ZHAO YAN (author) / XU ZHIQING (author) / YANG YAN (author) / LU MENGNAN (author) / CHEN XUE (author) / CHEN WENTING (author) / SUN BIN (author) / TENG DONGYU (author)
2020-09-15
Patent
Electronic Resource
Chinese
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