Sewage/Effluent Treatment in Industry

With the increase in effluents in water that is disposed off by industries or by our households, the present wastewater treatment systems sometimes fail to satisfy the environmental regulations and demands.

And even if they do, the process of installation of effluent treatment plants or sewage treatment plants demands high amount of capital investment along with huge land area required to set up the plant.

Other than this, the electricity requirements and the running costs of any wastewater treatment plant is huge. With the decrease in the permitted levels of BOD, COD and other parameters in water that can be disposed off into the environment now, the adoption of nanonbubble technology remains are only ray of hope.

Thus, we are on a mission to re-design the existing water treatment plants by engineering the revolutionary nanobubble technology.

WASTE WATER TREATMENT (STP / WSP)

Process of Aeration is extensively used in the wastewater treatment to deliver oxygen which is an important life-sustaining component for biochemical reaction substrate in aerobic treatment. Aeration is used to degrade BOD, COD, TKN and Ammonia from water. One of the fundamental control parameters in aerobic processes is dissolved oxygen (DO). Most of the current aeration systems underperform to maintain the desired DO levels, mostly because of low gas – liquid mass transfer ratio. Low DO levels lead to growth of bacteria that can cause hinderances related to sludge bulking and foaming. Adding additional aeration capacity can be complex and costly; however, the addition of nanobubbles can be used to supplement the conventional underperforming aeration systems by applying biologically available DO to support the biological process in quick and cost-effective way.

 

MEMBRANE BIOREACTORS (MBR)

Membrane Bioreactors (MBR) are being widely used at industrial units to provide effective pre-treatment of the wastewater prior to final discharge into the ground or canals. Despite having an advantage of a compact footprint, a common problem encountered with industrial MBRs is that they are not able to maintain the target dissolved oxygen (DO) level during peak loading cycles. This inconsistent and dramatic changes in the loading cycles may lead to a sudden spike in oxygen uptake rate in the aeration basin immediately followed by a sustained decline in DO levels. If the aeration system fails to recover by supplying the DO required to support the biological system, BOD removal will decline. However, the application of nanobubbles in wastewater treatment provides cost-effective supplemental aeration for MBRs.

 


ODOUR CONTROL

The offensive odours generated in wastewater are the result of gases which are by-product of decomposed organic matter. Hydrogen Sulphide, commonly referred to by its chemical formula H2S, is the most common gaseous by-product, formed from the anaerobic degradation of organic matter containing sulphur or from mineral sulphates and sulphites. Hydrogen sulphide is known for its rotten egg smell and can adversely impact human health at high levels. Odour in sewer lines, collection points, treatment plants, and ponds often leads to public complaints and reduces the aesthetic value. Natural (chemical free) way of treating odours, including H2S, is to prevent the water from going anaerobic by increasing dissolved oxygen (DO) by using air, oxygen or other oxidants. The effective gas-injection technology of our NBGs delivers a high volume of air or oxygen nanobubbles, effectively maintaining DO and thus not allowing the formation of odorous compounds.