RRC Module 1: Wastewater Engineering

environmental engineering

a branch of engineering that is concerned with protecting the environment from the potentially deleterious effects of human activity, protecting human populations from the effects of adverse environmental factors, and improving environmental quality for human health and well being

water

air

solid waste management

what are the three principle areas of environmental engineering?

wastewater engineering

it is a branch of environmental engineering in which the basic principles of science and engineering are applied to solving the issues associated with the treatment and reuse of wastewater

wastewater

the ultimate goal of ______ is the protection of public health in a manner commensurate with environmental, economic, social, and political concerns

sewage

it is the liquid conveyed by a sewer and may consists of any one or a mixture of liquid wastes

sanitary sewage

it is also known as domestic sewage; it originates in the sanitary conveniences of a dwelling, business building, factory or institution

industrial waste

a liquid waste from an industrial process, such as brewing, dyeing, etc

storm sewage

liquid flowing in sewers during or following a period of rainfall and resulting there from

infiltration

water that has leaked into sewers from the ground

inflow

water that enters sewers from surface sources such as cracks in manholes, open cleanouts, perforated manhole covers and roof drains or basement sumps connected to sewers

99.9%, 0.1%

sewage is composed of ___ water, and _solids

200-290

concentrations of BOD5 in typical residential wastewater characteristics

400-600

concentrations of COD in typical residential wastewater characteristics

200-290

concentrations of TSS in typical residential wastewater characteristics

6.5-8.5

concentrations of pH in typical residential wastewater characteristics

50

concentrations of oil and grease in typical residential wastewater characteristics

1×106 / 1000 mL

concentrations of total coliforms, MPN in typical residential wastewater characteristics

water pollution

it occurs when a body of water is adversely affected due to the addition of large amounts of materials to the water

polluted

water is considered ______ when it is unfit for its intended use

point sources of pollution

it occurs when harmful substances are emitted directly into a body of water from a pipeline or sewer

nonpoint source

delivers pollutants indirectly by passing through the continents

phosphorus, nitrogen

excessive nutrients such as ___ and ___, can cause eutrophication, or overfertilization of receiving waters, which can be toxic to aquatic organisms, promote excessive plant growth, reduce available oxygen, harm spawning grounds, alter habitat and lead to a decline in certain species

DAO 1990-34

revised water usage and classification amending section nos. 68 and 69, chapter III of the 1978 NPCC rules and regulations

DAO 1990-35

revised effluent regulations of 1990, revising and amending the effluent regulations of 1982

Class AA

Public Water Supply Class I

Class AA

it is intended primarily for waters having watersheds which are uninhabited and otherwise protected

Class AA

Require only approved disinfection in order to meet Philippine National Standard for Drinking Water (PNSDW)

Class A

Public Water Supply Class II

Class A

sources of water supply that will require complete treatment to meet PNSDW

Class B

Recreational Water Class I

Class B

for primary contact recreation such as bathing, swimming, skin diving, etc

Class C

Fishery Water

• for the propagation and growth of fish and other aquatic resources

Recreational Water Class II

• for boating

Industrial Water Supply Class I

• for manufacturing processes after treatment

Class D

for agriculture, irrigation, livestock watering, etc.

Industrial Water Supply Class II

other inland water

Class SA

Coastal and Marine Water:

• waters suitable for the propagation, survival and harvesting of shellfish for commercial purposes

• tourist zones and national marine parks and reserves under Presidential Proclamation No.1801

• coral reef parks and reserves designated by law and concerned authorities

Class SB

Coastal and marine water:

recreational water class I

• for bathing, swimming, skin diving, etc

fishery water class I

• spawning areas for chanos or “bangus” and similar species

Class SC

coastal and marine water for

1. recreational water class II

• boating, etc

2. fishery water class II

• commercial and sustenance fishing

3. Mangrove areas declared as fish and wildlife sanctuaries

Class SD

coastal and marine water for

1. Industrial water supply class II

2. other coastal and marine waters, by their quality, belong to this classification

Biochemical Oxygen Demand (BOD)

measure of the approximate quality of dissolved oxygen (DO) required by bacteria or microorganisms to stabilize organic matter in wastewater or surface water

influent

raw wastewater generated by any manufacturing firm and/or industrial plants including commercial and institutional establishments

effluent

any wastewater partially or completely treated flowing out of a manufacturing firm, industrial plant or treatment plant

Philippine Clean Water Act of 2004

RA 9275

Philippine Clean Water Act of 2004

The law that applies to water quality management in all bodies of fresh, brackish, and saline waters, and includes but not limited to aquifers, groundwater, springs, creeks, streams, rivers, ponds, lagoons, water reservoirs, lakes, bays, estuarine, coastal and marine waters.