Conn. Agencies Regs. § A - Advisory committee

Current through March 4, 2022

Size of facility (2-20 points)

Points

Maximum population equivalent 1 (P.E.) served on peak day

1 point per 10,000 P.E. part thereof, for a maximum of 10 points

_________

Design flow

1 point per MGD or part thereof, for a maximum 10 points

_________

Land disposal (evaporation)

2

_________

Subsurface disposal

4

_________

Variation in strength and/or flow of raw wastewater (slight to extreme) (0-6 points)

Variations do not exceed those normally present

0

_________

Recurring variations of 100% to 200% from norm

2

_________

Recurring variations of more than 200% from norm

4

_________

Raw wastes that impair biological treatment processes

6

_________

Pretreatment plant processes utilized

Pumping of main flow other than recycle flows at any point within the facility

3

_________

Screening or comminution

1

_________

Grit removal

3

_________

Equalization

1

_________

Effluent pumping when receiving infiltration (e.g. stream flooding)

3

_________

Combined Sewer Overflow

Storage

1

_________

Treatment

3

_________

Primary treatment utilized

Primary clarifiers

5

_________

Combined sedimentation/digestion (Imhoff tanks)

5

_________

Micro screening or other physical treatment

3

_________

Trickling filters used as roughing filters with recycle and intermediate clarifiers

5

_________

Trickling filters used as roughing filters with recycle or intermediate clarifiers

3

_________

SCADA

Operational

6

_________

Monitoring

2

_________

Secondary treatment utilized

Trickling filter or rotating biological contractor with secondary clarifiers

10

_________

Activated sludge with secondary clarifiers

15

_________

Activated sludge without primary clarifiers including extended aeration, sequential batch

including extended aeration, sequential batch reactors and oxidation ditches

18

_________

Stabilization ponds without aeration

5

_________

Aerated lagoon

8

_________

Advanced treatment utilized

Post aeration (mechanical)

2

_________

Direct recycle and reuse

6

_________

Polishing pond

2

_________

Chemical phosphorus removal

4

_________

Biological phosphorus removal

6

_________

Nitrification processes

6

_________

Nitrification and denitrification processes

9

_________

Denitrification filter

6

_________

Ion exchange

10

_________

Reverse osmosis or electrodialysis

15

_________

Chemical recovery or carbon regeneration

4

_________

Mechanical filtration

10

_________

Intermittent sand filters with gravity under

drains

5

_________

Solids Handling

Solids conditioning with polymers, ferricchloride or alum

2

_________

Thickening by means of: Gravity

2

_________

Mechanical (dissolved air flotation, gravity belt or centrifuge)

5

_________

Anaerobic digestion

10

_________

Aerobic digestion

6

_________

Evaporative sludge drying

2

_________

Mechanical dewatering

5

_________

Incineration, wet oxidation, or other solids reduction

12

_________

On-site disposal

2

_________

Composting (In vessel)

10

_________

Composting (static pile)

5

_________

Sludge storage

1

_________

Sludge pumping offsite

2

_________

Disinfection

Chlorination or comparable disinfection

5

_________

Chlorination/Dechlorination

8

_________

On-site generation and application of disinfectant

5

_________

Ultraviolet light

5

_________

Odor control

Biofilter

3

_________

Adsorption with activated carbon or equal

3

_________

Wet scrubber

6

_________

Thermal destruction with catalytic process

6

_________

Odor reducing sprays

2

_________

Chemical Additives

Septage treatment system

3

_________

Sedimentation additives

2

_________

Nutrient removal

2

_________

Biological laboratory analysis

Laboratory analysis performed outside the facility

0

_________

Laboratory analysis performed at the facility:

Membrane filter

2

_________

Use of fermentation tubes or any dilution method using a fecal coliform bacteria determination

3

_________

Identification and counts of biota by percent relative abundance

3

_________

Chemical and/or Physical laboratory analysis

Laboratory analysis performed outside the facility

0

_________

Laboratory analysis performed at the facility:

_________

Push-button or visual methods for simple analysis (e.g. settleable solids)

2

_________

Additional analysis including dissolved oxygen, biological oxygen demand, chemical oxygen demand, gas analysis, titration, solids, and volatile content

3

_________

More advanced analyses including specific constituents, nutrients, total oils, phenols, or use of highly sophisticated instrumentation including atomic absorption, gas chromatography

3

_________

Total points:

_________

Notes

Conn. Agencies Regs. § A
Effective June 25, 1984; Amended June 5, 2000

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