The Hydro-Action Aerobic Onsite Wastewater Treatment System was tested under the provisions of ANSI/NSF Standard 40 (Class1) for Residential Wastewater treatment Systems (May 1996 revision). ANSI/NSF Standard 40 was developed by the NSF Joint Committee on Wastewater Technology.
The performance evaluation was conducted at the NSF Wastewater Technology Test Facility in Chelsea, Michigan, using wastewater diverted from the Chelsea municipal wastewater collection system. The evaluation consisted of sixteen weeks of dosing at design flow, seven weeks of stress test and three weeks of dosing at design flow. Sampling started in November and continued into May, covering a range of operating temperatures.
Over the course of the evaluation, the average effluent CBOD5 was 9 mg/L, ranging between 3 and 60 mg/L, and the average effluent suspended solids was 15 mg/L, ranging between 4 and 100 mg/L. The effluent pH ranged from 7.1 to 8.3.
The model AP500 produced an effluent that successfully met the performance requirements established by ANSI/NSF Standard 40 for Class 1 effluent:
During the first month of the evaluation, the maximum 7-day arithmetic mean was 29 mg/L for CBOD5 and 46 mg/L for suspended solids, both below the allowed maximums of 56 and 63 mg/L respectively. The 30-day arithmetic mean for the first month of testing was 22 mg/L for CBOD5 and 32 mg/L for suspended solids, both below the allowed maximum of 35 and 42 mg/L respectively.
For the final five months of the evaluation, the maximum 7-day arithmetic mean was 10 mg/L for CBOD5 and 18 mg/L for suspended solids, both below the allowed maximums of 40 and 45 mg/L respectively. The maximum 30-day arithmetic mean was 9 mg/L for CBOD5 and 16 mg/L for suspended solids, both below the allowed maximums of 25 and 30 mg/L respective.
The effluent pH during the entire evaluation ranged between 7.1 and 8.3, within the required range of 6.0 to 9.0. The plant also met the requirements for noise levels (less than 60 dbA at a distance of 20 feet) and color, threshold odor, oily film and foam.
Hydro-Action is approved for usage in all 50 States, Canada and Mexico, and is VA/FHA approved.
Plant Capacity | Design Flow | 500 gpd |
|---|---|---|
Plant Hydraulic Capacity | Aeration Compartment | 663 gallons |
Clarifier | 173 gallons | |
Total | 836 gallons | |
Hydraulic Retention Time (at Design Flow) | Aeration Compartment | 32 hours |
Clarifier | 8 hours | |
Total | 40 hours |
If you’re ready for a smarter onsite water treatment system, then you’re ready for Hydro-Action. Designed specifically to meet today’s unique challenges, our treatment system produces cleaner effluent more efficiently, even in areas with sensitive land issues and leach field complications. A wastewater treatment system with no filters means peace of mind and lower maintenance costs.