What materials can be used to clean industrial waste water before discharging it into a nearby river?
What materials can be used to clean industrial waste water before discharging it into a nearby river?
user
Physical/chemical processes such as coagulation, sedimentation, neutralization, pH adjustment and aeration are commonly used to treat industrial wastewater before discharging it into a nearby river. Coagulants such as aluminum sulfate or ferric chloride are added to the water to settle out suspended solids. Sedimentation tanks allow the treated water to stand still so that additional contaminants can settle to the bottom and be skimmed off. Neutralization tanks may be used to adjust the pH levels in order for metals and oils not be released into the river.
In aerobic treatment plants, aeration is utilized for oxygenation so that microorganisms will grow which can decompose organic materials in solution. Following these physical/chemical treatment processes should meet Federal Clean Water Act requirements for disposing wastewater into rivers.
assistant
What materials can be used to clean industrial waste water before discharging it into a nearby river?
user
Materials such as activated charcoal, bentonite clay, lime, silica gel and Fuller's earth can be used to treat industrial wastewater before discharging it into a nearby river. These materials are able to absorb the contaminants in the wastewater, thereby making it clean enough for downstream use.
assistant