This document provides a design for a sewage treatment plant for Chintalavalsa Village. It includes an introduction describing the sewage treatment process and objectives. A literature review summarizes several other sewage treatment plant designs. The methodology section describes how population growth is projected and sewage flow is estimated to size the treatment units. The treatment process and design of receiving, screening, grit removal, sedimentation, and other tanks are outlined. The document is a work in progress with three remaining tank designs to be completed.

1. DESIGNOFSEWAGETREATMENTPLANT
FORCHINTALAVALASAVILLAGE
BY
V. SYAMALA
KUMAR
(17331A01A1)
P .JAYKRISHNA
(17331A0178)
Y SRINVASRAO
(17331A01A4)
B
UNDER THE GUIDENCE OF
Mr. B.JAGADEESH
Assistant Professor

2. INTRODUCTION
 Sewage treatment is the process of removing
containments from wastewater and household sewage both
runoff and domestic
 It include physical chemical and biological process to
remove physical chemical and biological containments.
 It objective is to produce a treated effluent and solid
waste or sludge suitable for discharge or reuse back into
the environment
 This material is often inadvertently contaminated with
many toxic organic and inorganic compounds

3.  Sewage implies the collecting of wastewater from
occupied area and conveying them to some point of
disposal
 The liquid waste will require treatment before they are
discharged into water body or otherwise disposed of
without endangering the public health
 As the cities have grown the more primitive method of
excreta disposal have gain place to the water carried
sewage system

4. LITERATURE REVIEW
 Puspalatha et.al (2016) reviewed on design approach for
sewage treatment plant. A case study of srikakulam greater
municipality . The present study involves the analysis of
parameters like BOD, raw sewage, effluent. The
construction of sewage treatment plant will prevent the
direct disposal of sewage in nagavali river and use of
treated water will reduce the surface water contaminated
ground water

5.  Pramod sambhaji patil et.al(2016) studied on design of
sewage treatment plant for dhule city. Some treatment
units are designed like screens, grit chambers, storage
tank, settling tank, aeration tank and skimming tank. The
effluent can also be used for artificial recharge of ground
water, flushing, foam control, fire protection, lawn
sprinkling.

6.  Murthy polasa et.al(2014) reviewed about design of
sewage treatment plant for gated community. In this
project three types of treatment unit operations are
conducted. Like physical and chemical and biological
processes. By increasing the detention time of sewage in
each treatment unit increases the efficiency of removal
unwanted impurities.

7. OBJECTIVES
 The main objective of sewage treatment is to protect the
envioronment ; social economic and public health from
the pollutants.
 Removal of floatable and postponed particles
 Removal of BOD(Biochemical oxygen demand)
 Removal of micro_organic which may be the cause of
dangerous diseases

8. METHODOLOGY
 By using the latest known population data, the future
population is predicted using incremental increase method.
 A design period of 30 years is taken & the treatment plant
is designed for population after 30 years (i.e. 2051)
 As per IS: 1172-1171 (1957), on an average, Indian people
use 135 litres per capita per day for their domestic
consumption.
 So, by considering that 80 % of water supplied is
generated as sewage after its usage, average daily sewage
flow can be estimated.
 Treatment plant is designed for peak flow (3 times the
average daily flow)

9. SEWAGE TREATMENT PROCESS
General;
 Sewage contains various types of impurities and disease bacteria
 This sewage is disposed of by dilution or on land after is collection of
conveyance if the sewage is directly disposed of it will be acted upon the
natural forces which will convert it into harmful substance
Degree of treatment;
 The degree of treatment will mostly be decided by regularity agencies and
the extent to which the final product of treatment are to be utlized
Location of treatment plant;
 The treatment plant should be located as near to the point of disposal as
possible
 If the sewage as to be disposed finally in to the river the plant should be
located near the river bank

10.  Design period;
 The treatment plant is normally designed to meet the requirement over a
30 year period after it completion.
 The time lag between the design and completion should not normally
exceed 2_3 years.
Layout of treatment plant;
 All the plant should be located in order of the sequance so that sewage
from one process should directly go other process.
 If possible all the plant should be located at such elevation that sewage
can flow from one plant into next under it s force of gravity only .
 All the treatment units arranged in such way that minimum area requried
it will also ensure economy in its cost.
 Suffcient area should be occupied for future extension.

11. FLOW DIAGRAMOFSEWAGETREATMENT
PLANT

12. DESIGN OFTREATMENT UNITS
Receiving chamber;
 Receiving chamber is designed for the size of (1.53*0.78*1.2) m^3
0.78
1.2

13. Screening;
Coarse screen channel design size
0.04
0.7

14.  Grit chamber;
Grit chamber size (0.57*3*1.5)m^3
1.5m
3m

15.  Fine screen;
Fine screen design (0.1*0.008)m^2
0.008

16. Skimming tank;
skimming tank size (1.2*0.229*0.152)m^3
1.2
0.152

17. Primary sedimentation tank;
Diameter of the tank is =4.636m
Depth of the tank is =2.5m
4.636

18. WORK IN PROGRESS
 Sewage treatment plant design of chintalavalsa is almost
done we have left three tanks design as early as possible
complete

19. Thank you