Industrial Effluent Treatment

Technology Description

In order to design a suitable method for treating an industrial effluent, the following major parameters must be determined:

> Daily wastewater volum
> Maximum and minimum water discharges;
> Chemical characteristics of the water used in the industry
> Continuous and intermittent manufacturing stages
> Intensity and periods of pollution peaks
> Possibility of separating waste streams;
> Possibility to carry out local or partial treatment, or recycling
> Probability of secondary pollution incidents, even if slight or occasional, that can worsen treatment plant operation (appearance of glues, fibers, oils, sand, etc.).

Operation and Maintenance

Discharge of industrial effluents into public sewer systems also requires the water to have several additional characteristics, including (1) does not affect the safety or health of sewer network workers, (2) does not affect the sewer pipes, and (3) does not affect the treatment processes in water treatment plants.
In addition, the required specifications of industrial effluents released into public sewers include the following:

> BOD concentration not exceeding approximately 20 mg/L
> Suspended solids concentration not exceeding approximately 600 mg/L
> No release of grease, oils or nitrogen compounds
> No release of explosives or toxic materials
> Sulfate concentration should be less than 100 mg/L, and the pH value should be between 6-10 (to protect the sewer pipes).