The ILD Purpose
1. Reduce the toxicity or negative impact of
the Domestic waste water.
2. Treatment starts at source, in pipelines
before it reaches central collection point.
3. Waste water is transformed to safe
irrigable water.
Domestic Waste Water : Prime
Concerns
Biological Oxygen Demand &
Chemical Oxygen Demand
Suspended Solids
Nitrogen
Phosphorus
Coliforms
Working of In-line Digestion (ILD)
Selective Enzymes which are
naturally occurring biodegradable
proteins, are formulated into
sustained release enzyme packs.
Reintroduction of enzyme packs
every 6 months at the source of
domestic sewage to digest the waste
in the water.
Existing Domestic sewage
treatment plants
 Capital intensive technology
 Limited to design parameters – can’t treat beyond
stipulated limits
 Energy dependent
 Can’t keep pace with ever increasing population
 High maintenance technology
 Subject to depreciation and corrosion
 Requires highly qualified personnel
ILD working
Positioning
of ILD unit
Waste in the underground
sewerage pipeline is digested
by the enzymes of the ILD
unit
Reed Bed filtration
for the final
removal of TSS and
dissolved N and P
Water can be
recycled for
irrigation
INLINE DIGESTION ENZYME PACKS
WORKING IN THE UNDERGROUND
SEWAGE SYSTEM.
Position digestion enzyme packs
At critical junctions in the system
EXISTING AIERATION POND
Waste in the pipelines is
being digested by the enzyme
prior to entry to the aeration
ponds
Further from this point water can used
for irrigation
Reedbeds will remove TSS and
Dissolved N and P
ILD and Reed bed treated water
Advantages of ILD
 Needs 40% less capital investment in comparison
 Adaptive and flexible designs to ongoing changes
 Elimination of Energy dependency
 Easy to install and operate technology
 Decentralized in a way to match population demand
 Significantly lower maintenance
 Enhance the life of installed pipelines
Enzyme Pack
 The Enzymes present in the packs are able to
withstand exposure to several harsh chemical
present in Domestic cleaners.
 Packs are designed for sustained release of
enzymes, even an occasional overdose/exposure to
disinfectants will not affect its working.
Use of ILD system in non-piped sewage
water treatment (Septic tanks)
 Tailor made Enzyme packs designed to treat waste
waters of stand alone septic tanks receiving upto 5000
liter per day.
 To be placed at the inflow of the septic tank or simply
submerging a pack in the septic tank’s first chamber.
 Will remove foul odors and sludge buildup.
 Has to be replaced every 6 months.
Where to place Draynzyme
Places where
Draynzyme
Can be placed in a
Septic tank.
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