WASTE WATER TREATMENT

1. CONSTRUCTION
TECHNOLOGY NVQ LEVEL 5
(CBT Curriculum Code: F45C001)
WATER SUPPLY, DRAINAGE AND
SEWERAGE TECHNOLOGY I
Module code - F45C001M12
Module Type - Compulsory
Eng. Y.A.P.M Yahampath
B Sc. Eng (Hons), Dip Highway & Traffic Eng, AMIESL, AMECSL

2. AIM OF THE MODULE
To enable the students to:
Determine capacity requirements of a water supply, drainage & sewerage.
 Supervise the operation and maintenance of water supply, drainage and
sewerage systems.
Learning Outcomes
The student will be able to:
Identify the requirements for water supply, drainage & sewerage
Supervise the construction of water supply drainage & sewerage systems
Maintain water supply drainage & sewerage systems and related
appurtenances

3. Lecture Hours Allocated
Lecture / Tutorial Practical Demonstrations/
Industrial visits
Self Study Total
60 Hrs 20 Hrs 20 Hrs 100 Hrs
Type Topic / Activity Weighting
Tutorials (04) based on main session
topics
10%
Case studies (02) 20%
Field visits (02) Report & viva 20%
End semester exam 50%
Assessment and Weighting

4. Topics Learning content Time
(Hrs)
Water supply
Design of water supply systems Types of systems and their components,
forecasting of average per capita water consumption and peak domestic
water demand,
forecasting of industrial, commercial and agricultural water demand, other
basic design data required, service level
6
Sources of water supply ground water and surface water, their characteristics, rain water harvesting 4
Intake structures ground water intakes - bored / drilled wells, calculation of yield, surface
water intakes
4
Pumps - types of pumps (displacement, centrifugal, airlift, hydraulic etc.), their
capacities and efficiencies, operational characteristics, advantage and
disadvantages
4
Transmission and distribution of water different types of transmission devices and their effects including strength
considerations
4
Distribution systems Types, layout & design of distribution systems, sizing of pipes, use of Hazen
William formula, pipe material and jointing
4
Distribution reservoirs storage capacity, types of reservoirs 4
Valves and water meters Types of valves and water meters, their uses and maintenance 4
Total 34

5. Topics Learning content Time
(Hrs)
Drainage & sewerage
waste water Types of waste water (domestic and industrial) and their characteristics,
measurement of strength of waste water (BOD and COD tests), hazardous
waste
4
sewage Nature and characteristics of liquid / semi liquid waste, collection in urban
areas, sanitary sewage and storm sewage, conveyance systems of sewage
4
Sewerage systems Sewerage systems (separate and combined etc.), design of sewerage
systems, sewer sections, sewer materials and specific properties, design
dimensions of sewers, quantity of sewage, construction procedure of sewer
systems, testing and back filling, sewer appurtenances
6
storm water Surface and storm water drainage, quantity of storm water, storm water
sewer systems, surface drains for sullage and rain water in urban areas,
runoff coefficients self – cleansing velocity, methods of laying and aligning
sewers
4
Sewer appurtenances man holes, their sizes and spacing, storm water inlets and types, catch basins 4
Waste and its transmission- pumps and types, Need for pumping, types of pumping stations, capacity
maintenance of sewerage systems - problems and hazards, cleaning
equipment and machinery, safety equipment
4
Total 26

6. Drainage & sewerage
Waste Water Treatment

8. • 2) Prepares a report of wastewater treatment plants. Including,
• i. The aim of wastewater treatment and disposal.
• ii. What are the impurities of wastewater?
• iii. Schematic diagram of a wastewater treatment plant.
• iv. Function of each element of wastewater treatment plant.
• v. Impurities removing mechanism.
• vi. Modern elements of wastewater treatment plant. [Mark 50]

9. QUESTIONS ?