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Inorganic Industrial Wastewater

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Inorganic industrial wastewater is produced mainly in the coal and steel industry, in the non-metallic minerals industry, and in commercial enterprises and industries for the surface processing of metals (iron picking works and electroplating plants). These wastewaters contain a large proportion of suspended matter, which can be eliminated by [6]. Sedimentation, often together with chemical flocculation through the addition of iron or aluminium salts, flocculation agents and some kinds of organic polymers [6, 7]. The purification of warm and dust-laden waste gases from blast furnaces, converters, cupola furnaces, refuse and sludge incineration plants, and aluminium works results in wastewater containing mineral and inorganic substances in dissolved …show more content…

Although it may contain some hazardous substances, such as heavy metals, it has been showing good adsorption qualities for phenolic compounds. The maximum phenol adsorption capacity has been found to be 27.9 mg/g for fly ash and 108.0 mg/g for granular activated carbon at initial phenol concentration of 100 mg/L [8] . Wang et al. [8] used fly ash as adsorbent for the removal of methylene blue from aqueous solution reporting an adsorption capacity of 4.47 mg/g. The effect [8]. of physical (heat) and chemical treatment was also studied on as-received fly ash. The heat treatment was reported to have adverse effect on the adsorption capacity of fly ash but acid treatment (by nitric acid) resulted in an increase of adsorption capacity of fly ash (7.99 mg/g) [9] Bhatnagar and Jain [9] investigated steel and fertilizer industries wastes, as an adsorbent for the adsorption of cationic dyes. …show more content…

It has been shown that biochar has good adsorption effect on typical pollutants of livestock wastewater such as organic pollutants heavy metals ,nitrogen, and phosphorus .After magnetization, biochar with good magnetic is easily separated from liquid , which is more suitable for livestock wastewater, compared to commercial activated carbon products. At the same time, because biochar has good adsorption capacity for nitrogen and phosphorus, it can be used as a slow-release fertilizer and has the characteristics of agricultural

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