Transcript ENVIRONMENTAL TECHNOLOGY

Module 1.0
Introduction
Obj 1.3: What is
environmental technology?
 The
application of technology and
engineering principles to the
– planning,
– design,
– construction,
– and operation
 of
the following systems...
Obj 1.3: Systems?
 Drinking
water treatment & supply
 Sewage treatment & disposal
 Stormwater drainage & control
 Solid & hazardous waste management
 Air & noise pollution control
 General community sanitation
Obj 1.4: Fundamental
Objectives of E.T.?
 Public
Health Protection
– to help prevent the transmission of disease
among humans
 Environmental
Health Protection
– to preserve the quality of water, land, air,
vegetation, and wildlife
Obj 1.5: Technical Specialties
within E.T.?
 hydraulics
 hydrology
 municipal
services
 biology
 chemistry
 ecology
 geology...
Obj 1.6: Pathogens?
 there
are many microscopic organisms
in the environment: bacteria; protozoa;
viruses.
 those that are capable of transmitting
diseases are called pathogenic
organisms (i.e. E.coli, cryptosporidia)
or... pathogens
Obj 1.7: Modes of Disease
Transmission...
DIRECT TRANSMISSION
pathogens
physical contact
sneezing
droplet spray
humans
INDIRECT TRANSMISSION
STOP
air-borne: dust, aerosol
vehicle-borne: water, food
vector-borne: insects, animals