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Efficiency Assessment of the Common Effluent Treatment Plant (CETP), MIDC

Chincholi, Solapur

Article  in  European Academic Research · February 2017

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 EUROPEAN ACADEMIC RESEARCH
Vol. IV, Issue 11/ February 2017

Impact Factor: 3.4546 (UIF)

ISSN 2286-4822 DRJI Value: 5.9 (B+)
www.euacademic.org

Efficiency Assessment of the Common Effluent

Treatment Plant (CETP), MIDC Chincholi, Solapur

SHRIKANT H. PAWAR
SATISH S. PATIL
Department of Environmental Science
Dr. Babasaheb Ambedkar Marathwada University
Aurangabad, Maharashtra, India

Abstract:
Common effluent treatment plant plays vital role in protecting
the environment and different lives from harmful industrial
wastewater. CETP is used for secondary and tertiary effluent
treatment for various industries like textile, pharma, oil refinery,
rubber, chemical, agro etc. CETP helps to control water pollution and
provide good services to industries. The study analyzed the physico-
chemical parameters of inlet and outlet samples of CETP. The
percentage removal efficiency of CETP of TDS, TSS, COD and BOD
was found to be 10.58 %, 89.6 %, 61.14 and 93.25 % respectively. The
efficiency of the CETP was good with respect to removal of TSS, BOD
and COD. Present study was performed towards efficiency of CETP
over a period of 2013-2014.

Key words: CETP, Environment, Efficiency, Effluent, Pollution and

Treatment.

INTRODUCTION:

Generally Common effluent treatment plant (CETP) is designed

to help the industries in easier control of pollution, as well as it
act as a step towards cleaner environment and service to the

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Shrikant H. Pawar, Satish S. Patil- Efficiency Assessment of the Common
Effluent Treatment Plant (CETP), MIDC Chincholi, Solapur

industrial sector at large scale. CETP is much more helpful for

the small scale industries; as such industries cannot invest in
effluent treatment plant.
Rapid industrial development and growth of cities
throughout the world especially in the developing world have
led to the recognition and increasing understanding of the
relationship between Pollution, public health and the
environment at large (WHO, 1982). Industries produces large
amount of effluent, which contain many harmful chemicals,
such as acids, bases, metals and organic, inorganic pollutants
depending on the nature of industries. Many of these chemicals
are persistent and toxic and exert a variety of health effects,
such as endocrine disruption, genotoxicity, bioaccumulation and
ecotoxicity (Patel and Pandey, 2012).
Performance efficiency of each unit was calculated,
which is the evidence that CETP has been working with the
norms of MPCB and meeting the standard discharge limits
(Govindaswamy et al 2006). The high alkalinity and traces of
chromium which is employed in dyes adversely affect the
aquatic life and also interfere with the biological treatment
processes (Palamthodi et al., 2011). The large volumes of
wastewater generated also contain a wide variety of chemicals
used throughout processing. (C Parvathi et al., 2009). Total
Suspended Solids (TSS), Biochemical Oxygen Demand (BOD5),
or Chemical Oxygen Demand (COD), may be in the tens of
thousands mg/L (W.J. Ng 2006).

MATERIAL AND METHODS

Study area
The CETP is situated at Chincholi MIDC (Lg. 17.6599 and Lt.
75.9064) Solapur district of Maharashtra, India. The capacity of
CETP is 1.5 MLD.

EUROPEAN ACADEMIC RESEARCH - Vol. IV, Issue 11 / February 2017

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Shrikant H. Pawar, Satish S. Patil- Efficiency Assessment of the Common
Effluent Treatment Plant (CETP), MIDC Chincholi, Solapur

CETP FLOW DIAGRAM

Grit, Oil
Screening grease
Effluent chamber chamber
tanker Collection
Tank
Equalization Tank

Air blower

Up flow Anaerobic Sludge

Clarifier
Blanket Reactor
Aeration Tank

PSF ACF H.R.T.S. Sludge drying beds

Sample collection and Analytical method

Sampling was carried out monthly over a period of 12 months
for physico-chemical analysis. Untreated (Inlet) and treated
(Outlet) effluent samples were analyzed for physico-chemical
parameters. The parameters like total dissolve solids (TDS),
total suspended solids (TSS), chemical oxygen demand (COD),
biological oxygen demand (BOD) were determined according to
the standard methods (APHA 1998).

Inlet effluent – Outlet effluent Treatment

efficiency % = X 100
Inlet effluent

RESULTS AND DISCUSSION:

The physico-chemical parameters of treated effluent were found

within the permissible limits of MPCB. The performance
efficiency of CETP is presented in the following table.
Months COD BOD TSS TDS
March 65.54 90.23 89.84 12.71
April 61.62 93.83 90.88 9.96
May 65.97 92.02 89.23 11.68
June 62.96 94.71 91.85 4.72
July 60.77 92.76 91.76 15.42
August 64.18 90.71 87.48 9.96
September 58.04 94.74 88.83 10.01
October 56.20 92.71 91.02 14.77
November 45.56 95.65 88.29 7.09

EUROPEAN ACADEMIC RESEARCH - Vol. IV, Issue 11 / February 2017

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Shrikant H. Pawar, Satish S. Patil- Efficiency Assessment of the Common
Effluent Treatment Plant (CETP), MIDC Chincholi, Solapur

December 65.98 92.13 88.75 6.33

January 62.72 94.78 87.41 17.41
February 64.17 94.85 89.89 7.04
Average 61.14 93.26 89.60 10.59
Table – 1: Treatment efficiency of CETP during the year 2013-2014

The efficiency of CETP was calculated by considering COD,

BOD, TSS and TDS of the inlet and outlet. The percentage of
reduction in COD and BOD is 61.14% & 93.26% respectively. It
was indicating satisfactory removal efficiency in term of
chemical oxygen demand while the reduction in biological
oxygen demand found to be very much better. The efficiency of
BOD removal is higher than that of COD removal.
The percentage of reduction in TDS is 10.59% and TSS
is 89.60%. It was indicating that poor efficiency in term of total
dissolve solids removal while the reduction in total suspended
solids found to be very efficient. It was observed from the table
the primary tube settler having more reduction than aeration
tank except BOD & COD. In primary tube settler removal of
TDS is 58.4%, TSS 85.83% as the removal of TDS was more
than the BOD & COD reduced to 33.89% and 38% respectively.
(Sumitkumar Patel et, al, 2013).

Fig. 1. COD removal efficiency in percentage.

It was observed that during the month of March COD removal

efficiency is higher (65.54 %) whereas in the month of
November is less (45.56 %). Similarly the COD removal

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Shrikant H. Pawar, Satish S. Patil- Efficiency Assessment of the Common
Effluent Treatment Plant (CETP), MIDC Chincholi, Solapur

efficiency of 95.26 % was observed by Pratiksinh Chavda and

Apurva Rana (2014).

Fig. 2. BOD removal efficiency in percentage.

It was observed that during the month of November BOD

removal efficiency is higher (95.65 %) whereas in the month of
March it is less (90.23 %). Similarly the BOD removal efficiency
of 98.18 % was observed by Pratiksinh Chavda and Apurva
Rana (2014).

Fig. 3. TSS removal efficiency in percentage.

It was observed that during the month of June TSS removal

efficiency is higher (91.85 %) whereas in the month of January
it is less (87.41 %). Similarly the TSS removal efficiency of
94.45 % was observed by Pratiksinh Chavda and Apurva Rana
(2014).

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Shrikant H. Pawar, Satish S. Patil- Efficiency Assessment of the Common
Effluent Treatment Plant (CETP), MIDC Chincholi, Solapur

Fig. 4. TDS removal efficiency in percentage.

It was observed that during the month of January TDS

reduction efficiency is higher (17.41 %) whereas in the month of
December it is less (6.33 %). Similarly the TDS removal
efficiency is very low i.e 4.5% (Sumitkumar Patel et, al, 2013).
After treatment the treated effluent of CETP is
discharged into HRTS designed by NEERI. CETP is having
total area of 50 acres. CETP has developed High Rate
Transpiration System (HRTS) on 45 acres of land. CETP has
planted around 40,840 Nos. of trees in the HRTS; these are
mainly Eucalyptus, Bamboo, Acacia & Silver Oak, Kashid,
Neem, Karanj, Gulmohar etc. The outlet of CETP is discharged
in HRTS. HRTS is full of biodiversity. There was observed 59
bird species, 7 snake species, 9 lizard species, 6 colorful
butterfly species and turtle in rainy season. It also observed
wild cat, rabbits, mongoose and honey bee’s colonies.

CONCLUSION:

The performance study on the common effluent treatment plant

(CETP) indicated a positive efficiency. The efficiency is in the
order of TDS<COD<TSS<BOD respectively. Treatment
efficiency of common effluent treatment plants has a good
impact on biodiversity.

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 Shrikant H. Pawar, Satish S. Patil- Efficiency Assessment of the Common
Effluent Treatment Plant (CETP), MIDC Chincholi, Solapur

REFERENCES:

1. APHA, AWWA, WPCF. (1998): Standard Methods for the

Examination of Water and Wastewater. 20th edition,
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York, USA.
2. C Parvathi, T Maruthavanan and C Prakash (2009):
Environmental impacts of textile industries. The Indian
Textile Journal.
3. Govindaswamy P, Madhavan S. D, Revathi S, Shanmugam P,
(2006): “Performance Evaluation of Common Effluent
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of environ. Science & engg, Vol -478, pp 213-220.
4. Palamthodi Shanooba, Dhiraj Patil and Yatin Patil, (2011):
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7. Sumitkumar Patel, Dr. Anita Rajor, Dr. Bharat P. Jain and
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