Good

Delta ENVIRO-AIRE Advanced Wastewater Treatment Units utilize long-standing wastewater treatment technology and scale it to Residential Daily Flowrates. The design has been certified to conform with the NSF/ANSI 40 average effluent quality standards with 12 mg/L BOD and 16 mg/L TSS.

Better

The Delta Whitewater® Aerobic Treatment Systems, both DF and UC series, have been tested under NSF/ANSI 40 and met and exceeded Class I requirements.  This is the most commonly sold system in our area.  It is perennially the top performing ATU outside of a fixed-film membrane system.

Despite the Whitewater’s superior performance relative to its competitors, AAA Zoellner has made further enhancements.  Our concrete models incorporate a recommended, large pre-treatment compartment into the Whitewater System.  The additional compartment significantly improves performance by reducing the estimated effluent solids by 400%. Simply put, our systems operate longer, more effectively, and cost significantly less to operate and service.

            The improvements made:

• Superior concrete design, specifications, and construction – 6000 psi concrete (as poured)
• One-piece tank
• Large pretreatment chamber
• Systems have badges and are easily identifiable as to type and size
• All Stainless hardware
• All accesses sealed against water or gas infiltration
• Enclosed, gas-free, and ventilated compressor compartment
• Accessible liquor inspection/sampling port
• Options for panels and configurations
• Improved electrical components and controls

            These improvements allow:

• Unmatched efficiency, performance, durability, and longevity
• Significantly lower total suspended solids (TSS’s) and system volatility
• Zero moving parts within the tank
• No filters or media to inspect or maintain
• Easily re-buildable linear compressors
• Unmatched surge tolerance
• Less callbacks
• Easier, quicker maintenance
• Longer pump-out intervals
• Simple single 30-amp/115V electrical circuit

Best

Delta ECOPOD Advanced Wastewater Treatment Units are an innovative approach to onsite wastewater disposal where nitrogen reduction is required. The ECOPOD technology has been tested under NSF/ANSI 40 AND 245 with an average nitrogen reduction of greater than 50% and met and exceeded Class 1 requirements.  A distinct advantage of the ECOPOD versus the competition, besides system simplicity, is its impressive performance without the need for supplementary chlorination or UV components.  Our competitors’ systems require the additional components to achieve similar treatment results.  Both requirements are costly to purchase and operate.  They also involve additional monitoring and more frequent maintenance.