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In recent years, the wafer industry has developed rapidly, but at the same time, it also produces a large amount of wastewater. The production wastewater mainly comes from the cleaning process of the polysilicon ingot slicing process. The acid-containing wastewater is produced in the cleaning process after the surface treatment of the polycrystalline silicon ingot with the mixed acid. Since the surface treatment is a mixed acid of nitric acid + hydrofluoric acid, the main pollution in the…Continue
Standard discharge, reclaimed water reuse and zero effluent discharge
1. As for paper mill wastewater treatment, pulping wastewater is the most difficult wastewater to be treated in the papermaking industry. The organic pollutants and inorganic salts are high in content, complex in composition, high in hardness, high in costs. The technical staff of …Continue
Palm oil is not only the highest yielding cheap vegetable oil on the earth but also a safe raw material for edible oils and daily chemicals, and a raw material for biofuel.
As a raw material for edible vegetable oils, chemical raw materials and biofuel, palm oil has attracted worldwide attention in the process of ecological protection and industrial pollution. As a result, palm oil…
Natural rubber, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds, plus water.
Currently, rubber is harvested mainly in the form of the latex from the rubber tree or others. The latex is a sticky, milky colloid drawn off by making incisions in the bark and collecting the fluid in vessels in a process called "tapping". The latex then is refined into rubber ready for commercial processing.…