wastewater engineering #1

90% to 95%

Primary Treatment remove settleable solid

20% to 30%

BOD Reduce in Primary Treatment

>30m^3/day

Effectiveness of effluent standard or DAO 35

Anaerobic Bacteria

Oxidize Organic matter utilizing electron acceptors other than oxygen

Mixed Liquor

Mixture of activated sludge and wastewater

Barminutor

combination of Bar screen and communitor

Infrared Analysis

Measure of Carbon Dioxide in TOC and it's converted numerically to the original organic carbon content

Total Kjeldahl Nitrogen

Measurement of total organic and ammonia nitrogen

Dispersed Air Flotation

Type if floatation in which air bubble are form by introducing the gas phase directly into liquid phase through a reducing impelled or thru diffuser

heterogeneous

A reaction involving an ion exchange resin and those that required the presence of a solid phase catalyst

Overflow Rate

A quotient of flow rate and Surface area

Infiltration

Is the ground water entering sewers and building connection through defective joints and broken or cracked pipe and manholes

300 to 500 ppm

Range of typical BOD for domestic Sewage

500 to 1000 ppm

Range of typical COD for Domestic Sewage

Apparent Color

type of color due to the suspended solids

Proteins

are long chains of amino acids

"Surface Active Agent "

Also known as Surfactants

Azide Modification Method

Method for BOD

Dichromate Reflux Method

Method for COD

Weir loading Rate

the amount of water leaving the settling tank per linear foot of water

Activated Sludge Process

The extended aeration wastewater treatment process

Organic Solids

The "STRENGTH" of wastewater is most closely related to the concentration of:

Polymer

Change of value in the effluent turbidity and no Change of pH in the effluent

Copper

The most toxic in biological treatment plant organisms

Humus sludge

characteristic of trickling filter

pH adjustment

the first step in physical and chemical treatment in chromium waste

Biological Slime

growth of organisms on fixed media

Nitrobacter

bacteria converting NO2 to NO3

C6H5OH (phenol)

uses chloroform extraction method of analysis

Cr(IV) (chromium Oxide)

Diphenyl Carbanize colimetric method

Hedonics

the relative pleasantness or unpleasantness of odor sensed by the subject

Thiorhodaceae

A purple sulfur bacteria

Bruccine Method

the approved test for nitrate as nitrogen for fresh water bodies

5,000/day to 5php per kg BOD

penalty for non compliance on DAO 35

Marine or Coastal Recreational Water Class II

Class SC

NPI Class D in DAO 35

maximum BOD of 120 mg/L

NPI Class SD in DAO 35

maximum MBAS is no Restriction

NPI Class SC in DAO 35

pH ranges 6 to 9 PCU

Aldrin (C12H8Cl6)

White, Odorless Crystal when Pure

Calorific Value

Energy content of a fuel measured as the heat released on complete combustion

Bioniche

referring to all the interacting organism living together in a specific biotope

Carbon Market

reducing impact of green house gas emmisions

Carbon Budget

measure of the carbon emmisions; usually expressed as grams of CO2

Arete

textural term means "fine-grained"

Arkose

Sedimentary rock formed by cementation of sand-sized grains of feldspar and quartz

Biothication

turning and mixing of sediments by organims

Cap Rock

Cryptocrystalline form of quartz

CALICHE

cemented by calcium carbonate, an accumulated product of chemical weathering in a dry climate

Cirque

A steep-walled hollow in a mountain side; origin of a mountain glacier

Clastic

Glacial deposits laid down directly by glacier or in lakes etc., result of glacial activity

Dripstone

made up of a broken fragments of preexisting rocks or minerals

Chalcedoly

process by which ice and snow dissipate owning to melting and evaporation

Drumlin

Control peak flow; any artificial obstruction place in water

Flint Ice

Fine Spicules plates, or discoids of ice suspended in water

Delta

A Sharp bend, loop or turn in a streams course

Meander

Stream course is abandoned

Milankovith Curve

graph represent solar radiation that earths surface receives

Mohs Scale

ten point scale of mineral hardness

Pedalfer

Super continent existed from 300 to 200 million years ago

Pahoehoe

Hawaiian term for Basiltic Lava flow

Paelesol

Term used to describe soils typically formed in a humid region

Bogs

areas of water logged soil that tend to be peaty and some of which are acidic

Swamps

Wetlands Fed mainly by groundwater

5000 ppm

Max allowable concentration of carbon dioxide in air for safe working

5 ppm

tolerable limit of nitrogen oxide in air

5 ppm

safe unit for SO2 in air

0.001 ppm

TLV of mercury in Potable Drinking Water

0.1 ppm

TLV of Ozone and Phosgene in air

5 ppm

Dissolved Oxygen content in river water

10 ppm

Max. Permissible turbidity in potable water

20 ppm

permissible color for domestic water supply

100-1000 ppm

permissible safe limit of moderately toxic gas

10000-100000 ppm

Maximum TLV of Non-toxic gas

10 ppm

TLV for Hydrogen Sulphide

170 dB

noise level heard at the distance about 100m; from a jet engine after burner

120 dB

sound produced by an automobile horn heard at a 1.5m

90 dB

maximum allowable noise exposure limits for a man working 8 hours a day in a noisy chemical plant

45 dB

noise lvl during normal conversation among men

95 dB

noise level heard inside a bus in a busy city traffic or inside a subway train

1 ppm

TLV for lead for public sewer/waste water

105 dB

noise emitted by a ventilation fan at 3m distance

75 dB

Max. per limit value of industrial noise as recommended by WHO

80 dB

shouting by a man at his full voice

120 dB

ear register pain in this amount of noise

70 dB

Max noise level for a motor vehicles engines, muffler, and radios/stereos

0.2 to 0.5

range of free residual chlorine to be maintain until water reaches the consumer and the farthest point in the distribution system

50-55 dB

Noise at Cafeterias

17 micrograms/litre

TLV of Aldrin in public water supply system

90 micrograms/cubicmeter

Max. Permissible concentration of particulate matter in air

4-5 weeks

In sewage treatment, extension period allowed for oxidation ponds

1 mg/L

dose of chlorine for disinfection of water