Treatment system of isopropanol sewage generated in monocrystalline silicon battery manufacturing

Abstract

The invention discloses a treatment system of isopropanol sewage generated in monocrystalline silicon battery manufacturing. The system comprises a concentrated isopropanol alkali waste liquid storagetank, a fluorine-containing diluted isopropanol waste water storage pool, a first lifting pump, a second lifting pump, a first pH regulating pool, a second pH regulating pool, a first floating removal primary precipitation pool, a second floating removal primary precipitation pool, an anaerobic pool, a defluorination flocculating sedimentation device, a hydrolytic acidification pool, an active sludge pool, a secondary sedimentation tank, a clean water discharging pool, a mud scraping and sucking machine and a sludge pump station. The concentrated isopropanol alkali waste liquid generated after the use of the isopropanol in the wool making stage in the monocrystalline silicon battery production and the fluorine-containing diluted isopropanol waste water are subjected to comprehensive treatment; through the respective pretreatment, the flow is merged for biotreatment; outlet water and active sludge after the simultaneous biological treatment are subjected to sufficient multi-aspect reuse; the waste reuse rate is improved; the discharge of waste liquid and waste materials is greatly reduced.

Description

technical field [0001] The invention relates to the field of solar sewage treatment, in particular to an isopropanol sewage treatment system produced in the manufacture of monocrystalline silicon cells. Background technique [0002] Due to its excellent properties of safety, less pollution, recyclability and unlimited resources, solar energy has become an indispensable clean energy for human development. Compared with the availability of other energy sources, it has obvious advantages. China's photovoltaic industry has developed rapidly since 2004. At present, the output of solar cells has ranked first in the world for many years in a row, the photovoltaic power generation market has gradually started to take shape, and the industry as a whole is booming. However, the solar cell production process itself will produce a variety of waste gas, waste water and waste residue with complex components. If it cannot be treated in a timely and effective manner, it will cause serious p...

AI Technical Summary

Problems solved by technology

However, the solar cell production process itself will produce a variety of waste gas, waste water and waste residue with complex components. If it cannot be treated in a timely and effective manner, it will cause serious pollution to the external environment, which does not conform to the self-image of solar energy "clean products".

Images