HYBRID CONSTRUCTED WETLANDPresented By

Ashwini M. Ingale(ID -13054011)

Guided ByM.L. Gulhane

Department Of Civil EngineeringGovernment College Of Engineering

Amravati

Contents Of The Presentation:

IntroductionWaste water treatment methods

Constructed wetland (CW)MechanismTypes of CW

Combinations of hybrid CWApplicationsConclusion

INTRODUCTION

WHAT EXACTLY WE DO IN WASTE WATER

TREATMENT METHODS ??

TYPES OF WASTE WATER TREATMENT

METHODS

WASTE WATER TREATMENT METHODS

NATURAL METHODS

AQUATIC FLOATING PLANT

METHOD

CONSTRUCTED WETLAND

HORIZONTAL CONSTRUCTED

WETLAND

VERTICAL CONSTRUCTED

WETLAND

HYBRID CONSTRUCTED

WETLAND

CONVENTIONAL METHODS

WHAT IS CONSTRUCTED WETLAND ??

Constructed wetlands (CWs) are wetlands intentionally created from

non-wetland sites for the sole purpose of wastewater or storm water

treatment.

MECHANISM OF CONSTRUCTED WETLANDS

SKEMATIC VIEW OF CW

Settleable and suspended solids are effectively removed in the wetland by filtration and sedimentation.Attached and suspended microbial growth is responsible for the removal of soluble organic compounds.Phosphorus are removed in constructed wetlands by adsorption, and precipitation, plant uptake.Pathogens are removed in wetland during the passage of wastewater through the system mainly by sedimentation

TYPES OF CONSTRUCTED WETLANDS

A. HORIZONTAL FLOW CW

B. VERTICAL FLOW CW

C. HYBRID FLOW CW

HORIZONTAL FLOW CW

HF wetland can effectively remove the organic pollutants (TSS, BOD5 ,COD) from the wastewater.

VERTICAL FLOW CW

Advantages Of Vertical Flow CW

•They have much greater oxygen transfer capacity resulting in good nitrification;•They are considerably smaller than HF system.•They can efficiently remove BOD5, COD and pathogens.

Hybrid constructed wetland

Hybrid constructed wetland is the combination of HF- CW and VF -CW. In these systems, the advantages and disadvantages of the HF and VF can be combined to complement each other.

Schematic View Of Hybrid CW

Combinations of hybrid CW

1.VF–HF Systems

2.HF–VF systems

CONCLUSION

Removals obtained by the hybrids are very high for BOD, COD, NH4, Suspended solid, turbidity and faecal coliforms.

Hybrid CWs could cover the limitation of each single CW.

Combining constructed wetlands can solve specific water pollution problems such as heavy metals and organic compounds.

Thank you