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ACE Screener™
Inlet Screen & Screenings Conditioning Equipment

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For the fine screening, debris conditioning and dewatering at:

Waste water treatment plants
Sewage treatment plants
Water reclamation facilities
Combined storm water overflows
Various screening applications

Ace Screener

The Ace Screener is not only designed to meet todays increasing requirements for fine screening, but provides a two phase screenings conditioning and solids dewatering package capable of achieving a significantly dewatered, virtually odor and feces free end product for disposal. The Ace Screener has proven to be a reliable and highly efficient fine screen both as a retro fit of existing sites, as well as on new installation of the headworks of raw sewage inlets with flow capacities up to 2.3 MGD. Each Ace Screener comes as a complete package with an integrated control panel, a gravity flow or piped flow Static Screening Unit, a Maci screenings conditioning system and LiSep separation and solids dewatering unit. Each Ace Screener is designed for quick installation, low maintenance and minimal operator attendance.

Advantages

High Screening Captures Ratio
Advanced Debris Conditioning and Dewaterng
Low Maintenance for Remote Sites

The Problem

Screenings of Mixed Debris Rags, Cotton Products, Fiber, Plastics, Paper, Hair, Fecal Matter, Oils/Fats/Grease as discharged by a screw compactor cause strong odors, attract insects and are unsanitary. Designers of municipal wastewater treatment plants normally avoid the use of fine screens at the headworks due to concerns over removal of the organic matter. The concerns are the potential interruption of the treatment processes from organic removal and the storage and disposal of the contaminated screenings. The ever-changing regulations and discharge restrictions now present the engineer with the problem of balancing screenings at the head-works, screenings handling equipment and downstream treatment processes. Inefficient screenings capture often leads to downstream fouling of pumps, monitoring equipment and primary/secondary wastewater treatment processes. The Ace Screener addresses all of these issues.

The Solution

The Ace Screener solves all the normal concerns and allows the engineer superior flexibility in the design of new plants or upgrade of existing plants. Wastewater influent is pumped to or gravity flows through the Ace Screener?s static/self-cleaning Stainless Steel Perforated Plate Screen. Influent debris collects causing the water level in the channel to rise. At a preset water level, a control sequence activates a semi rotary, fully self-compensating brush arm which transfers the screened debris into a slant bottom hopper. When the water falls to a preset low level, a cleaning process takes place within the screening unit before the brush arm comes to rest in a park position out of the flow. This is achieved by reversing the brush arm over the screening plate, routing out any hairpinning and leaving the screen plate clear for the next cycle. A Maci Conditioning Pump then combines the screenings with water drawn from the filtrate, while washing and disintegrating the debris as it pumps the homogenous slurry to a liquid separator. The liquid separator receives the conditioned screenings into a propri-etary conical screen where a spinning rotor centrifugally forces the organic laden filtrate through the screen and back to the inlet operator attendance. channel. Dry, odorless solids with up to 93% volume reduction are ejected at the top of the conical screen through an outlet port into a collection bin for disposal.

The Process

The primary element of the Ace Screener is the dual/static Stainless Steel Perforated Plate Screen (1). Screened debris is collected and transferred by a semi rotary self compensating brush (2) to an interior slant bottom hopper. A Maci Conditioning Pump (3) provides an approximate 3/8" sheared debris and water slurry to a centrifugal liquid separator (4) for organic/inorganic separation, solids dewatering and disposal. A 50% to 75% disposal savings from a volume reduction can be expected and realized when compared with standard screw dewatering and compaction.

Other Features

A compact design requiring minimal operator attendance, easy parts replacement, and long service life. Optional bypass channel with hand-rake (5) avoids costly civil modifications. The Integrated Control Panel (6) is simple and fully automatic. The inorganic end products (7) are virtually feces free, unrecognizable and odorless. The resultant screenings have exceptional volume reduction and exceed regulations for conventional landfill disposal.

Flow Capacity	0.228 - 0.684 ( MGD )	0.342 - 0.912 ( MGD )	0.342 -1.14 ( MGD )	0.342 - 1.35 ( MGD )	0.570 - 1.71 ( MGD )	0.798 - 2.28 ( MGD )
DIM.	490 Ace	590 Ace	740 Ace	591 Ace	741 Ace	991 Ace
A	19 9/16	23 11/16	29 9/16	23 11/16	29 9/16	39 7/16
B	19 5/16	23 3/16	29 3/16	22 1/16	29 3/16	38 15/16
C	12 7/16	12 7/16	12 7/16	12 7/16	12 7/16	16 5/16
D	20 13/16	20 13/16	20 13/16	27 9/16	27 9/16	27 9/16
E	37 9/16	37 9/16	37 9/16	49 5/16	49 5/16	49 5/16
F	4 15/16	4 15/16	4 15/16	5 5/16	5 5/16	5 5/16
G	69 7/16	69 7/16	69 7/16	71 7/16	71 7/16	71 7/16
H Min	64 13/16	64 13/16	64 13/16	84 11/16	84 11/16	84 11/16
H Max	79 13/16	79 13/16	102 5/16	102 5/16	102 5/16	102 5/16
J	63 7/16	63 7/16	63 7/16	83 9/16	83 9/16	83 9/16
K	50 5/16	50 5/16	63 5/16	63 5/16	63 5/16	63 5/16
L	40 13/16	40 13/16	40 13/16	51 7/16	51 7/16	51 7/16
M	9 7/16	9 7/16	9 7/16	9 7/16	9 7/16	9 7/16
N	46 3/16	46 3/16	46 3/16	56 13/16	56 13/16	56 13/16
P	1 15/16	1 15/16	1 15/16	2 3/16	2 3/16	2 3/16