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Presented by Team ROCHEM
LOW ENERGY SPENT WASH
CONCENTRATION FOR
GRAIN BASED DISTILLERY
ROCHEM INDIA - MISSION
Changing the Face of Water & Waste Water Treatment !
The Challenge
• High to very High TSS in Spent wash
• Very Fine Particles
• High COD, less compare to molasses spent
wash
• TDS quite low compare to molasses spent
wash
• TDS post integrated evaporator is slightly
high but still treatable through RO System
• Spent was need the treatment for removal of TSS
and very fine particle – Advance DAF is an answer to
it.
• Concentrate spent wash volume at lowest energy
input cost i.e. ROCHEM PT RO.
• Maximum Resource Conservation (Water Re-use)
• Concentrated spent wash can be further concentrated
through evaporator and dryer for solidification of TDS.
The Solution… Need of the Hour…
Why the solution was not implemented yet
• Due to absence technology which can offer
proven results.
• Due to non availability of commercial scale
plant/pilot plant to check treatability study.
• Evaporator route was working fine although it
was an expensive affair.
• ROCHEM’s Advance DAF is an answer to all
the above.
GEM System
Confidential
ROCHEM in exclusive Technical collaboration with Clean Water Technology USA, brings CWT's innovative flocculation and floatation unit is a unique approach and feed TSS reduction in cases with small and light TSS with high loads such as in the Distillery sector for Grain & Molasses based effluents. The Gas Energy Mixing (GEM) System can generate better results, handle a much greater contaminant loading, adapt to flow changes and produce much drier solids with a much smaller footprint and using less chemicals than typical DAF systems.
Confidential
GEM System
Confidential
Gas is dissolved into 100% of the stream first. Gas is homogeneously mixed into the waste water before floc structure is formed. The dissolved gas comes in contact with the particles before it even becomes a bubble. The smaller the bubble the smallest particles will be attached.
GEM SYSTEM
Bubble Attachment Method
Confidential
Bubble Attachment Method
More Bubbles
Smaller Bubbles
Better Bubbles &
Better Results
Results on Grain Based spentwash after Decanter –Possible to Install RO now with >70% Recovery!
The Scheme
• Spent was from Distillery
• Advance DAF for Removal of TSS
• ROCHEM PT RO (low cost spent wash
concentration)
• Evaporator + Dryer (solidification)
• Detail Techno Commercial Case Study can
be prepared on case to case basis
depending upon geographical tertiary.
Concerns / limitations of Distillery
• Steam cost is high or non-availability of low
cost steam unlike molasses based distillery
• Non availability of bagasse
• Non availability of biogas
• All the above factors will lead to high steam
cost resulting in high cost for evaporator
operations.
1. CONTINUOUS PRODUCT DEVELOPMENT
High Pressure-RO
2. COST EFFECTIVE SOLUTIONS
“ROSERVE” – our „pay per use‟ concept
The Solution for Molasses Based Distillery
1. PT(HP)-RO!
High Pressure – 75, 90, 120 & 225 Bar
RO Systems
A few advantages of Rochem PT(HP)-RO systems are as follows:
1. Reduction in costs for the thermal systems
Rochem PT(HP)-RO system can be applied on existing RO rejects
thereby further reducing the final volume of effluent to be treated for disposal.
2. Reduction in steam consumption
As HP-RO gives a more concentrated reject at further reduced volumes, the
steam consumption is reduced.
3. Lower operating/ treatment cost of HP-RO systems
Lesser power requirement & no steam consumption. Treatment costs can be
drastically reduced due to absence of need for operating fuel and lower power
costs.
ROCHEM High Pressure-RO Systems – PT(HP)-RO
An Overview
4. Compact and modular construction of the membrane system
The unique design offers versatile features like smaller foot print, ease in
handling, replicability and isolation in case of fault.
5. No thermal stress
Handling higher volumes of RO reject effluents by HP-RO systems is easier
and with no frequent mechanical & process failures.
ROCHEM High Pressure-RO Systems – PT(HP)-RO:
An Overview
• SERVICE CONCEPT ! Customer Buys nothing.
• Customer defines Service need and scope.
• Customer only enters into a Service Agreement.
( Min 3 to Max 6 year tenure)
• Rochem brings to site, best suited Plant & Machinery –
RO/MEE/Compost/Dryers/Others to meet the Service Need. Client
undertakes Civil works ( limited due containerised equipment)
• Rochem operates the equipment and provides the Customer the
Service of Reducing Spentwash volume
• Customer pays Rochem agreed Service charges per m3 of Volume
reduced.
2. ROSERVE !
What is ROSERVE ?
2. ROSERVE !
• Customer Upfront Capital Investment is NIL (only outflow is
security deposit)
• Customer Pays only for What He Gets.
• Technology, Performance, Obsolescence, Upgrade – ALL RISK
OF ROCHEM !
• Customer can focus Investment into Distillery, rather than ETP !
Overall 70 – 80% Water Recovery
from BMSW..!!
We have now achieved …
Case Study
Background Distillery Bio Methanated Effluent
Plant Installed Rochem PT-RO + PT(HP)-RO system
(Micro Processor controlled, Fully Fail safe and Unattended
Operation)
Input 800 cum/day at 8 brix max. of BME as input.
Recovery Rate
PT-RO @ 53.5%
PT(HP)-RO @ 26.88%
Total 66%
Further recovery enhancement can be achieved byusing higher pressure systems at 120 bar & 220 bardepending on brix value of BME.
Case Study
Parameters Unit Input to PT-RO
Stage-1
Input to PT(HP)-RO
Stage-2
Feed Flow cum/day 800 372
Inorganic TDS ppm < 25,000 < 50,000
Brix ppm < 8 < 14
TSS ppm <3,000 <3,000
Temperature °C 35-40 35-40
Operating pressure bar 50 75
Recovery as % of feed % 53.5 26.88
Permeate cum/day 428 100
Reject cum/day 372 272
What does ROCHEM offer for ZLD today?
• WHE (Waste Heat Evaporators)
• Solar Thermal heat assisted Evaporators
• Others
Upcoming Concepts....
.. achieve Zero Discharge
.. conserve large quantity of water
.. conserve Energy
.. conserve Capex
.. preserve the Environment
Please call or write to us at :
Tel : +91 22 6704 9000
Cell : +91 98204 80843
Web : www.rochemindia.com / [email protected]
email : [email protected]
Let us join hands to …
