Comparison of sludge generation volume
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For the hydrolysis wastewater from silicone sludge, in order to ensure the effectiveness of subsequent biochemical treatment, iron filings must be added to this wastewater before biochemical treatment is carried out, in order to extract copper from the acidic wastewater. However, a large amount of sludge is generated during the subsequent neutralization and precipitation process. What is the reason for this? Apart from the good adsorption capacity for iron, are there any other reasons? I would appreciate guidance from experts.
According to the technical analysis by Environmental Protection News, the use of lime to adjust the pH level generally also leads to an increase in sludge volume; in addition, it is necessary to check whether an excessive amount of iron salts is being used.