Wastewater Treatment

• The suspended matter can be removed by established/conventional methods. (PRIMARY TREATMENT)
• This results in reduction of COD/BOD.
• The dissolved forms are difficult to remove.
• They can be removed by converting them to insolubles and removing as sludge or they may be Adsorbed on Floccs formed during coagulation.
• If dissolved forms are removed at the primary treatment stage, then we have additional COD/BOD reduction as BONUS
• In this way we can remove, toxic chemicals, oil & grease, from Industrial wastewaters.

TREATABILITY STUDY
This study may be divided into two parts.

• 1. PRIMARY: In the primary treatment study, we carry out various experiments, with the aim of removing suspended and dissolved matter, with combination of various chemicals and by varying conditions. In this study we can come to optimum doses of chemicals, and provide valuable inputs for Design of plant
• 2. SECONDARY : In the secondary treatment, we carry out a Bio-degradation study. The Primary treated waste is inoculated, with bacteria from the milieu (soil&sewage etc). Here we get to know the extent of biological degradation possible, the time needed for degradation, and many other factors needed for Design.

TREATMENT OF WASTEWATER WITH ALGAE
Algae has distinct advantages over conventional methods.

• It requires less energy
• The treated water is saturated with oxygen.
• The excess algae can be utilised as good fertilizer.

GLASS PILOT PLANT
Glass pilot plant simulating real Biological systems for Feasibility studies.

ANAEROBIC AND AEROBIC PILOT PLANTS
These plants for Laboratory Feasibility studies on wastewater.