Wate water - Miscellaneous

Phase contrast

Microscope w/ 1000 times magnification most ideal in viewing filamentous organisms

Av leeuwenhook

1st viewed bacteria

Hans jansen

First compound microscope

Ridolf virchow

Biogenesis

Linnaeus

Taxonomy

0.2mm

Resolving power of unaided human eye

Acetate

Substrate for CH4

Fermentation

Mixed acid and mixed alcohol

Acidogenic

Clostridium is ___ bacteria

Strict anaerobe

Most impt bacteria in fermentation

Methemoglobinemia

Nitrate poisoning or baby blue syndrome

CO2, NH3, SO4, H2O

End product of aerobic bacteria

2-6 hrs

Time reqd for fresh sewage to be stale at 20C

Facultative

Major contributor in stabilization of waste water

P5

P5,000

Fine for non-compliancr of effluent standard

___ /kg BOD/da or

___ /da

10-20 yrs

DAO 34 beneficial use is expected to last for

Paint filter test

Measures leaching characteristics of screenings

4C

Domestic sewage samples must be preserved at ___ temp to be analyzed

1-2 hrs

Ave detention time in primary tanks

2-4 hts

Ave detention time in secondary tank

Cobalt thiocyanate active substance

Ctas is used in non-ionic surfactant. Ctas is?

Piston

Diaphragm

Progressing cavity

Pumps used for primary sludge

Off-line

In ___ equalization, only slight damping is achieved

Chemical precipitation

Removal of ca, mg ions fr solutions by precipitation

Crustaceans

Like rotifiers but w/ hard thin shells

Potassium dichromate

Used as strong oxidizing agent in cod test

Thiothrix

Can proliferate when an influent contains fermentation products such as vfa and reduced sulfur cmpds (sulfide and thiosulfate)

S. Natans, h. Hydrossis, m. parvicella

Proliferate in Low do

M. Parvicella

Low f/m

0.5 mg/L

Low DO of ____ is more favorable for filamentpus bacteria

S. Natans, thiothrix, h. Hydrossis, fungi

Proliferate in low nutrients

6-8 mg/L

Critical NO3 concentration for the formation of rising sludge

Nocardia

Activated sludge foaming organism that has filamentous structure and filamentous are very short and are contained w/in floc particles

Straggler floc

Small light fluffy buoyant sludge particles on clarifier near effluent weirs

Actinomycetes

Group of filamentous fungus like bacteria, gram +, spore forming

Billowing

Homogeneous cloudy solid formation in weir that wash out

Causes are equipment malfunction, hydraulic overloading, and solids overloading

Nocardia

Rhodococcus Corynebacterium

Tsukamurella

Skermania

Mycobacterium

Gordona

Filamentous bacteria associated w/ foaming

Shaggy and gray

Color of normal operation in rbc

S. Natans

Predominant filamentous in rbc

Low organic loading

Excessive snail growth in rbc caused by

Methanol

Main synthetic source of organic matter for denitrying organisms

1 mg/L Pt

0.5 mg/L Co

Color is produced fr standard color unit fr

1-1.6

BOD5:TOC

Ni

Methane is produced fr heating CO + H2O in ____ catalyst

Effervescence

Escape of small gas bubbles fr liquid

10-20 yrs

Facultative lagoons shall be cleaned every

Aufwuchs

Mixture of algae, fungi, and bacteria at lake bottom

NH3-N

N2 occuring in the zone of decomposition of highly polluted stream

20-30 cm

Thickness of sludge drying bed

4%

Flotation thickener for was produce concentrate of ___% solids

Stainless steel wedge wire

Hd polyurethane

Examples of artificial media drying beds

Centrifuge

Which is more costly: centrifuge or belt filter press?

FeCl3

Sludge conditioner that helps reduce H2S in amaerobic digestion

Beach plate

Located at the end of the belt causing a back-rolling action and may be used to increase dewaterinh

Rotary drum

Function similar to gravity belt