WASTE WATER TREATMENT TECHNOLOGY

1. (Promise for Healthy Environment)
KK ENVIRONMENT SOLUTIONS
10 KLD SEWAGE TREATMENT PLANT AT GOVERNMENT
COLLEGE OF KARAD, MAHARASTRA
(PREFABRICATED TYPE)
Present by Nirmal Kumar

2. SEWAGE TREATMENT PLANT
 Sewage treatment is the process of removing contaminants from wastewater generated from various source-
Hospital, Schools, College, Hotels etc.
 Physical, chemical, and biological processes are used to remove contaminants and produce treated
wastewater (or treated effluent) that is safe enough for release into the environment. A by-product of sewage
treatment is a semi-solid waste or slurry, called sewage sludge.
 The sludge has to undergo further treatment before being suitable for disposal or application to land.
To make wastewater acceptable for reuse or for returning to the environment,
the concentration of contaminants must be reduced to a safe level, usually a
standard set by the Environment Agency.

3. Sewage treatment generally involves three stages:
Primary
Treatment
Secondary
Treatment
Tertiary
Treatment
Sewage
Treatment
Stages
Sewage
generate from
Hospitals,
Hotels and their
treatment
method

4. Sewage Treatment Process:
1. Preliminary Treatment: Its main objective is the removal of coarse solids and other large materials
often found in raw wastewater.
2. Primary Treatment: The main purpose of this treatment is to reduce any heavy solids (organic &
inorganic) that settle to the bottom by sedimentation while oil, grease & lighter solids float to the surface by
skimming.
3. Secondary Treatment: The prime objective is the further treatment of the effluent from primary
treatment to remove dissolved and suspended biological matter.
4. Tertiary Treatment: The removal of those wastewater constituents which cannot be removed in
secondary treatment. Treated wastewater is sometimes disinfected chemically or physically (for example,
by lagoons and microfiltration) prior its discharge into the receiving environment (sea, river, lake, wet
lands, ground, etc.)

5. SCREEN CHAMBER
FOG TRAP
EQUALIZATION TANK/ COLLECTION TANK
REACTO TANK/AERATION TANK
SETTLER
DISCHARGE
SLUDGEBED
FILTER FEED TANK/BALANCE TANK
BLOWER
MGF & ACF

6. Effluent discharged standards for Sewage Treatment Plant:
S/No. Parameter Inlet (mg/L) Outlet (mg/L)
1. BOD 100 to 400 30
2. COD 400 to 700 250
3. TSS 250 50
4. TDS 7100 2100
5. pH 9 6.5
6. Oil & Grease 100 10

7. Benefits of STP and ETP:
 To preserve natural environment against pollution
 To meet the standards for emission of pollutants set by the Government
& avoid heavy penalty
 Protection and maintenance of the environment
 Prevention of disease and Spread of disease
 Remove the all organic impurities make water reusable
 Reduce Water Bills
 Do not pollute surface Water
 Preserve marine life

8. Use of Treated Water
 Horticulture
 Agriculture
 Car wash
 Toilet flushing
 Moping the floor
 Hydroelectricity
 Construction work etc.

9. Photos of Civil Type Sewage Treatment Plant

12. Photos of Fabricated Type Sewage Treatment Plant

15. Treated Water Quality

16. “Eager to serve your environment well”