Process biotechnology
application to industrial
wastewater treatment plants
PROF AVN SWAMY,
Vice Principal, JNTUACE
Pulivendula
Clarifier
Anaerobic Digester
Typical clarifier
PPS compact clarifier
Typical ETP flow sheet
Aeration tank-Diffused aeration
Bioeactors
• This unique stand-alone Bioreaction system
can be placed into almost any Hydrokleen
wastewater treatment system. This unit will
dramatically assist existing treatment systems.
The HE-BR-500 can be added to any system
where light hydrocarbons, high concentrations
of oils and grease, antifreeze, pesticides,
organic nitrogen and other liquids are a
problem.
Moving bed Bioreactor
•
•
•
As contaminated water enters the Bioreactor it is slowed down to allow for solids
to fall to the bottom of the tank and evenly coat the biomass. Being a moving bed
reactor the biomass is systematically rotated allowing all portions of the media to
be exposed to the influent. These provide the biodigesters an unlimited surface
area for bio-reaction to occur. Pre-packaged in a liquid form, the HydroBiodigesters are dispensed automatically into the biomass. Automatic dosing
allows precise use of the biological product for maximum digestion of waste.
Water passes from the system automatically where it can be discharged for reuse
or sanitary sewer. Head pressure purges the accumulated sludge, eliminating the
requirement to manually remove solids.
Dual 5500 gallon Bioreactors for use in high-flow wastewater recycling or pretreatment for discharge to sanitary sewer. Bioreaction take time, the flow rate and
substrate to be broken down determine the size of the system. This big guy is 5500
gallons. The 5500 can be set up to break down hydrocarbons, high concentrations
of oils and grease, antifreeze, pesticides, organic nitrogen and other organics.
Contact us for a quote on your requirement.
Airlift eactors
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Since one of the recognized characteristics of
airlift reactors is the potential for scaling up and
the relatively low power consumption for agitation
and oxygenation, it is only natural that many
processes related to wastewater treatment use this
type of reactors.
Jin et al. (2002) used an airlift reactor in a
comprehensive pilot plant system for starch
processing wastewater reclamation. The starch was
utilized by Aspergilius orizae. Simultaneously to a
95% COD, 93% BOD and 98% suspended solids
removal, an important production of 􀁄-amylase
(~50 EU/ml) was obtained (Jin et al. 1998). An
interesting point in this paper is the dependence of
fungal morphology on ALR fluid dynamics. In this
type of processes, morphology of the fungal
biomass is extremely important. Free mycelial
growth (wild growth) increases strongly the
•
•
•
•
•
•
•
•
•
•
•
The solution that has been
almost universally adopted for this problem, which
attains to citric and other organic acids,
antibiotics, etc., is to find the conditions under
which the biomass takes the form of fungal pellets.
The advantage in gas-liquid transfer rate because
of the decrease in viscosity usually overweighs the
added resistance stemming from the itraparticle
diffusion of oxygen. But the formation of pellets in
optimal size and compactness is a very complex
matter.
MBR GE
•
•
The ZeeWeed membrane bioreactor (MBR) process is a GE technology that
consists of a suspended growth biological reactor integrated with an ultrafiltration
membrane system, using the ZeeWeed hollow fiber membrane. Essentially, the
ultrafiltration system replaces the solids separation function of secondary clarifiers
and sand filters in a conventional activated sludge system.
ZeeWeed ultrafiltration membranes are immersed in an aeration tank, in direct
contact with mixed liquor. Through the use of a permeate pump, a vacuum is
applied to a header connected to the membranes. The vacuum draws the treated
water through the hollow fiber ultrafiltration membranes. Permeate is then
directed to disinfection or discharge facilities. Intermittent airflow is introduced to
the bottom of the membrane module, producing turbulence that scours the
external surface of the hollow fibers. This scouring action transfers rejected solids
away from the membrane surface.
MBR
•
ZeeWeed membrane bioreactor technology effectively overcomes the problems
associated with poor settling of sludge in conventional activated sludge processes.
ZeeWeed MBR technology permits bioreactor operation with considerably higher
mixed liquor solids concentrations than conventional activated sludge systems that
are limited by sludge settling. The ZeeWeed MBR process is typically operated at a
mixed liquor suspended solids (MLSS) concentration in the range of 8,000 to
10,000 mg/L. Elevated biomass concentrations allow for highly effective removal
of both soluble and particulate biodegradable material in the waste stream. The
ZeeWeed MBR process combines the unit operations of aeration, secondary
clarification and filtration into a single process, producing a high quality effluent,
simplifying operation and greatly reducing space requirements.