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SEWERAGE TREATMENT MODULE --

CA-50 and CA 60

Description & Technical Specifications

 

Model CA-50

Models CA-60

 

Both models have all features and benefits of the  CA-30 but on a larger scale.  Increased aeration and clarifier sections allow for higher organic and hydraulic loads.  Man ways are easily accessible for routine operation and maintenance.  All Cromaglass models have the ability to batch discharge clarified effluent with continued aeration and mixing all in the same tank.  This unique design reduces the overall footprint required thereby creating otherwise useless real estate into a valuable commodity.

DESCRIPTION                                 CA-50                                                 CA-60                      

Capacity:                                  5,000 (gpd)                                          6,000 (gpd)

Dimensions (L x W x D):          19’5”x 7’4”x 8’ 3”                               19’5”x 7’4”x 8’ 3”

Shipping Volume                      1,300 cf                                               1,300 cf

Shipping Weight:                       2,684 lbs                                              2,884 lbs

Discharge Volume:                    625 gals / 8# per day                            625 gals / 10# per day

Aeration Capability                   38 lbs / per 24 hrs                                36 lbs / per 24 hrs

Control Panel                           230v / 1ph / 60hz / Nema 4                  230v / 1ph / 60hz / Nema 4

Total Amps Required                60a / 230v                                            60a / 230v

Electrical Consumption             55/65 kwh / 24 hrs                               55/65 kwh / 24 hrs

Aeration Pump(s)                     1/2 hp WE0511B                                 1/2 hp WE0511B

Transfer Pump(s)                      1/3 hp WE0311M                                1/3 hp WE0311M

Sludge Pump(s)                        1/3 hp WE0311M                                1/3 hp WE0311M

Discharge Pump(s)                   1/3 hp WE0311M                                1/3 hp WE0311M

SS Tie Down Rod Package      8#                                                        8#

 

 

   Typical Cycle

 

caimg002 FILL; AERATION

Flow enters the Solids Retention Section (A) that is separated by non-corrosive screen.  Inorganic solids are retained behind the screen. Organic solids are broken by turbulence created with mixed liquor being forced through screen by submersible aeration pumps.  This eliminates the need for mechanical comminution.

 

AERATION

Liquid and small organic solids pass through the screen into the continuing Aeration Section (B).  Air and mixing are provided by submersible pumps with venture aspirators that receive air through pipe intake from the atmosphere.

 

caimg003

DENITRIFICATION (OPTIONAL)

Provided by an anoxic period during the regular treatment cycle. Cromaglass units create anoxic conditions by closing the air intakes of the aeration pumps with electric valves.  This stops aeration, but the system continues mixing.

 

 TRANSFER/SETTLE

Treated mixed liquor is transferred by pumping to the Clarification Section  (C).  The transfer period overfills the Clarifier with the excess spilling through over-flow weirs back into the main Aeration Section.  Transfer ceases and Clarifier ( C ) is isolated – solids separation occurs under quiescent conditions.

 

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DISCHARGE 

After settling, effluent is pumped out of the Clarifier ( C ) for discharge. Return sludge is pumped from the bottom of the Clarifier ( C ) back into the main Aeration Section (B) using a submersible pump or sludge can be wasted to a Sludge Processing Tank.

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