SAIL HERO AR4 Total Liquid Recovery and Remediation Pump

Overview

The SAIL HERO AR4 Total Liquid Recovery and Remediation Pump is an engineered pneumatic lift system designed for the controlled extraction of contaminated groundwater, landfill leachate, emulsified fluids, and other moderately viscous aqueous phases from subsurface environments. Operating on the principle of compressed-air-driven airlift pumping, the AR4 generates upward fluid motion via air injection into a riser tube—creating a density differential that induces continuous liquid ascent without mechanical impellers or rotating components. This design eliminates seal wear, minimizes clogging risk, and ensures reliable operation in chemically aggressive or particulate-laden aquifers. The pump is specifically optimized for in-situ remediation applications where long-term deployment, corrosion resistance, and adaptability to variable well configurations are critical performance requirements.

Key Features

• Airlift-based operation with no moving parts in the submerged section—ensuring high reliability and low maintenance frequency
• Compatible with well casings as small as 9 cm (3.5 in) inner diameter, enabling deployment in standard monitoring and extraction wells
• Maximum volumetric delivery capacity of 76.2 mL per cycle under typical field conditions (dependent on air pressure, riser geometry, and fluid density)
• Robust solids handling capability: capable of lifting suspended particles up to 3.22 mm in diameter without jamming
• Enhanced buoyancy module featuring chemically inert, PTFE-compatible float assembly with optimized surface-area-to-mass ratio for stable actuation across pH 2–12 and redox-variable matrices
• Housing constructed from lightweight, UV-stabilized composite material; wetted components fabricated from ASTM A240 Grade 316 stainless steel and ASTM D471-compliant polyvinylidene fluoride (PVDF)
• Modular assembly with tool-free disassembly—field serviceable within 15 minutes using standard hex keys and torque wrenches
• Configurable inlet architecture: bottom-inlet, top-inlet, or dual (top + bottom) inlet modes to accommodate varying saturation profiles and contaminant distribution patterns

Sample Compatibility & Compliance

The AR4 is validated for use with aqueous-phase contaminants including chlorinated solvents (e.g., PCE, TCE), petroleum hydrocarbons (BTEX, PAHs), heavy metal–laden leachates, and surfactant-enhanced flushing solutions. Its material compatibility aligns with EPA Method 8015M (hydrocarbon analysis) and ASTM D5116 (vapor intrusion sampling protocols). All wetted surfaces comply with USP Class VI biocompatibility testing criteria for polymer components and meet NACE MR0175/ISO 15156 requirements for sour-service corrosion resistance. The pump supports GLP-aligned field operations when integrated with calibrated flow meters and audit-trail-capable data loggers.

Software & Data Management

While the AR4 operates as a standalone mechanical unit, it is routinely deployed in conjunction with SAIL HERO’s optional AR-Series Supervisory Control and Data Acquisition (SCADA) interface module. This add-on enables real-time monitoring of air supply pressure, cycle timing, cumulative volume estimates, and fault diagnostics via Modbus RTU or Ethernet/IP protocols. Data output conforms to ASTM E2558-22 Annex A1 standards for remediation equipment telemetry and supports 21 CFR Part 11–compliant electronic record retention when paired with validated third-party logging platforms.

Applications

• Multi-Phase Extraction (MPE) systems targeting co-existing free-phase NAPLs and dissolved plumes
• Vapor-enhanced thermal remediation support—providing simultaneous groundwater dewatering during steam injection or electrical resistance heating
• Circulating reagent delivery in In Situ Chemical Oxidation (ISCO) or Biostimulation programs
• Hydraulic containment via induced gradient control—establishing localized capture zones to suppress contaminant plume migration
• Leachate recovery from municipal solid waste landfills and acid mine drainage collection sumps
• Pre-treatment fluid transfer in ex-situ treatment trains incorporating air-stripping, granular activated carbon, or ion exchange units

FAQ

What is the maximum operational depth for the AR4 pump?

The AR4 is rated for continuous operation at depths up to 30 m (98 ft) below ground surface, assuming standard 6-bar compressed air supply and 2.5 cm ID riser tubing.
Can the AR4 handle fluids with suspended solids exceeding 5% w/w?

Yes—provided particle size remains ≤3.22 mm and settling velocity does not exceed 0.15 m/s under static column conditions. Pre-screening is recommended for slurries with >10% solids content.
Is the pump compatible with explosive atmospheres (ATEX Zone 1)?

Not intrinsically; however, it may be operated in hazardous locations when paired with certified explosion-proof air compressors and segregated pneumatic control circuits meeting IEC 60079-0 standards.
Does the AR4 require calibration prior to deployment?

No field calibration is required for basic operation. However, volumetric accuracy verification against a certified flow meter is advised before initiating regulatory reporting or mass-balance calculations.
What maintenance intervals are recommended for extended deployments (>6 months)?

Visual inspection every 30 days; full disassembly, O-ring replacement, and float integrity check every 180 days or after 2,000 operating cycles—whichever occurs first.