Aqua Safe Advanced Wastewater Treatment Systems Distributed in

Aqua Safe ® Advanced Wastewater Treatment Systems Distributed in Oregon by: Aerobic Septic Systems Manufactured by: Ecological Tanks, Inc. 2247 Hwy 151 North Downsville, LA 71234 (318) 644 -0397 www. etiaquasafe. com

Basic Plant Design

Aqua Safe Aerobic Treatment Systems

Aqua Safe Advanced Aerobic Treatment System: Plant Design n n Fiberglass Extended Aeration process: n n n n Pre-treatment chamber (optional) Aeration chamber (38+ hour retention) Clarifier Total capacity = 200% of design flow Multiple models provide different configurations Oregon approved design flows: 500, 600 (level 2 uv), & 1100 gpd Larger capacities available with additional engineering.

PRE-TREATMENT or TRASH TANK § Usually a single compartment tank that is watertight § Traps grease, oils, large solids, & other debris § Need only short detention time, maintaining wastewater strength (50 -100% of D. A. F with a min. of 325 gallons)

Air Distribution: Air Drop n n Four (4) ½” PVC airdrops AS 500: 12, 3/32” holes No Diffuser to clean Minimal back pressure on compressor

NSF STANDARD 40 CERTIFICATION § All ATU’s approved for use are certified to Standard 40 for Class I Effluent through the National Sanitation Foundation (NSF), or its equivalent § Consensus Standard 40 established 1970 by industry, regulators, & users § Minimum standards for installation, owner, operation, repair manuals § Addresses structural integrity, electrical components, access ports, failure-sensing devices, flow design, data & service plates § 2 -year maintenance contract; manufacturer to train & certify installers & maintainer

NSF STANDARD 40, continued § Must have standby parts available & emergency service within 48 hours § NSF Testing: 6 months (CBOD & TSS) 5 days per week at rated capacity § Manufacturer cannot touch after initial setup § Loading Regimes: 35% 6 -9 am; 25% 11 -2 pm; 40% 5 -8 pm § Stress Tests: 48 - hour power out; 7 -day vacation; wash day stress; working parent stress § Performance: 30 -day average CBOD < 25 mg/l; TSS < 30 mg/l; p. H 6 -9 § Minimum maintenance: every 6 months; record conditions; retain records

Effluent Quality Achieved by the Aqua Safe treatment plant: n n Test results from Standard 40 protocol of the National Sanitation Foundation (domestic strength wastewater) Biochemical Oxygen Demand (BOD): 2. 37 mg/l (NSF St. 40 max. allowed = 25 mg/l) Total Suspended Solids (TSS): 2. 11 mg/l (NSF St. 40 max. allowed = 30 m Standard 245 (min. 50% reduction of Total Nitrogen): AS 600+4 NR* Total Nitrogen Influent = 39 mg/l Total Nitrogen Effluent = 15 mg/l Reduction of Total Nitrogen = 62% *Requires min. 400 gal. pre-treatment tank

Installation of the Aqua Safe ® Advanced Treatment System

Digging Excavation n Width ~1 ft. wider than plant n Level bottom n Undisturbed soil or a bed of sand n Free of rocks, dirt clods n Depth to allow 3” of inspection port to be above ground

Installing Aqua Safe Tank Use lifting hooks to set tank

Setting the Aerobic Tank n Insure that the tank is level (no more than 1” difference across tank. (2” for a AS 500+5 Pre) n Insure that the inlet is facing the proper direction

n n Allign tank to insure piping will enter the tank properly. Insure that the tank is level and sitting on solid ground or sand bed.

Sewer Connections n Connect tank to building sewer or pretreatment tank. n Insure inlet pipe does not extend too far into tank where it might cause blockage. n Fill all tanks with water.

Backfilling n Backfill with suitable material. n Use sand if natural fill contains rocks or clay. n Insure fill is properly compacted to prevent settling. n Insure surface water drains away from tanks

INSTALLATION PROCEDURES: General Recommendations § Inlet pipe should fall (⅛”/ft) from pre-treatment tank to the ATU tank inlet; outlet pipe should fall (⅛”/ft) from tank outlet § For multiple tanks, install each within 12” of next tank. § Fill tank(s) to outlet with water § Backfill evenly around tank with clean fill, excluding rocks or large items, after making all connections watertight

INSTALLATION continued § Make sure discharge ‘T’ is level & centered § Ensure proper venting of gases. § Install aerator in well ventilated & flood-free area < 100 feet from ATU § Run ¾” Sch. 40 PVC air line from aerator to ATU < 100 feet, free of dirt or debris, with 12” of cover § Install control box with 12 -14 gauge wire in electrical conduit (12” of cover) sealed against moisture § Wire alarm, pump, floats, etc. to panel following wiring diagrams provided. § Electrical connections should be made by licensed electrician

Appropriate cover for the A. T. U. § § Ensure that water does not pool around A. T. U. (grade should slope away from plant) Check risers for a watertight seal

Initial Start-up Period n n 6 -8 weeks may be required to develop sufficient bacteria for normal operation Several factors can slow down start-up: Temperature n Dilution from over-sized pre-treatment tank n Excessive greywater entering system n Toxicity of sewage n

INITIAL SERVICE CONTRACT, WARRANTY, & ETC. § A 2 -year service contract including 4 service visits must be included in the purchase price to the owner § A continuing service contract with similar terms must be made available before the end of the initial contract § A 5 -year prorated warranty is provided as follows: § 100% first 2 years § 75% replacement cost of aerator in year 3 § 50% replacement cost of aerator in year 4 § 25% replacement cost of aerator in year 5 § A service contract must be in effect in years 3, 4, & 5 §The service contract does not cover pumping of sludge from ATU § Warranty excludes damage by ants, flooding; improper installation; owner abuse; or act of nature

OWNER’S MAINTENANCE & RESPONSIBILITIES Read owner’s manual for the Do’s and Don’t for proper care & operation; the design treatment capacity; provisions of maintenance agreement and warranty; & prevent damage to mechanical or electrical components by ants, rodents, flooding, etc. which are not covered by warranty §Check for the following on a routine basis: § § Audible or visual alarm on control box indicating a malfunction § Offensive odors in the event an interruption of air flow or other cause § Operation of air compressor with low hum & vibrations § Dry conditions around air compressor with no ant hills or other §Continue service contract for service visits every 6 months by factory certified contractor §Maintain records of permit documents & all service visits to aid in troubleshooting, if needed, and to pass on to future owner