Dr. S.V. Patil, VSI, Pune Adequacy of Effluent Tratment Plants

28 Pages·2017·3.84 MB·English

DR. SANJAY V. PATIL
HEAD AND TECHNICAL ADVISER
DEPARTMENT OF ALCOHOL TECHNOLOGY
VASANTDADA SUGAR INSTITUTE, MANJARI, PUNE (INDIA)
Email: [email protected]
AIDA Technical Seminar www.vsisugar.com Bengaluru, 05-06-Oct-2017

Types of assessments

Norms – SW Treatment/Disposal

Approved ZLD systems

Approach

Fermentation and Distillation

Effluent quantities and Characteristics

Biomethanation

Reverse osmosis

Multiple effect Evaporation

Biocomposting

Slop fired Incineration boiler

BMSW dryer

Condensate Polishing unit

On-line monitoring system and other requirements

Conclusions
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
Self Assessment

Third Party Assessment-
VSI/NEERI/Distillers’ Association etc

Assessment by regulatory authority-
SPCB/CPCB/MoEF
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1.
Red category and Zero Liquid Discharge (ZLD).
2.
For Bio-composting as a final treatment:

MEE is essential

SW storage max. 30 days on raw SW basis.

Max. 270 days (With covered compost yard-
additional/throught-out the year can be allowed)

Yard has to be impervious as per CREP norms.

Bio-compost has to be bagged in polybags &
compost composition & manufacturers name to be
printed on it.

Compost quality has to be certified by Ministry of
Agriculture.
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2. For Bio-composting as a final treatment (Continued):
 For 5 to 12 % solids containing spent wash, the filler
material (PMC) to spent wash ratio prescribed is 1:
2.5 for 45 days cycle and 1:3.5 for 60 days cycle.
 For concentrated spent wash (20 to 30 % solids), the
filler material (PMC) to spent wash ratio prescribed is
1: 1.6 for 60 days cycle.
 Impervious compost yard area based on material
balance (plus ready compost storage area) should
be made available.
 During rainy season, bio-composting process has to
be stopped.
 Record of filler material used (PMC) and bio-
compost produced/sold should be maintained.
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3.
SW storage- Impervious as per CREP norms.
4.
For Incineration route: Storage of 7 days on conc. SW
basis in impervious storage tank.
5.
Secondary treatment: Process condensate, permeate,
spent lees, CT & boiler Blowdown, pump gland cooling
water etc. has to be treated (CPU) & recycled back.
6.
Online monitoring :

Mass flowmeters before & after concentration of
SW.

Camera: 30 days SW storage tank & bio-compost
yard.
 Stack Monitoring System (PM <150 mg/NM3 or 50
mg/NM3).

To be installed & connected to SPCB/CPCB server.
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1 Biomethanation MEE Bio-composting
2 Biomethanation RO MEE Bio-composting
3 Biomethanation MEE DRYER
4
Biomethanation RO MEE DRYER
5 MEE Incineration
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1.
Holistic Approach: Integrated management
employing Reduce-Recycle-Reuse principle
2.
No End of Pipe Treatment.
3.
No Discharge
4.
Analytical & Necessary measurement facilities
(Water, Steam, Power, Effluents)
5.
Fresh water consumption-section wise
6.
Environment Management Cell:
(Unit Head + Distillery Manager + ET plant I/c
+ Concerned Officers/Chemists)
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
Distillery installed and Licensed capacity. Boiler
capacity. Source of electricity and water.

Distance from river/dam/canal/other water bodies.

Authentic data on alcohol production/molasses
consumed. Per day alcohol production data.

Authentic data on per day SW & SL production, total SW
& SL production.

No. of days of operation in a year.

Alcohol % (v/v) achieved in wash, Fermentations
efficiency, Distillation efficiency, Recovery etc.

Fermentation technology employed.

Distillation technology employed, reboilers used, spent
lees generation (Rectifier, PRC etc).

If sludge is generated, quantity of sludge MT/day & its
method of disposal.
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RAW VALUES SPENT LEES VALUES
SPENT WASH
Total SL, M3/Day
Volume, M3/Day
Volume, L/L
Volume, L/L
SL Recycled,
M3/Day
pH
SL for treatment
COD, mg/L
M3/Day
BOD, mg/L
pH
TDS, mg/L COD, mg/L
BOD, mg/L
TSS, mg/L
TDS, mg/L
Volatile acids,
TSS, mg/L
mg/L
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