We are a Canadian construction company, providing engineered and proven waste water management solutions for sewer or septic systems. We deal from small installations for a single family dwelling, to large municipal level sewer management, treatment, dispersement and recycling systems.
Not adequately treated waste water is a huge environmental concern, especially if the effluents are being pumped into local lakes, oceans, river systems etc. Fecal Chloroforms is not only harmful to the environment and local fish populations, it is also a cause for many water born diseases.
The system that we provide for the treatment of waste water is a hybrid unit created from the best of the process features that are inherent in technologies known as: 1) Activated Sludge Return, 2) Extended Aeration, 3) Attached Growth, and 4) Trickling Filters.
Our treated waste water can be used in sprinkler systems and be pumped into the ocean and river systems, with no cause of harm to the environment or people. At this level of treatment, the effluent is clean, has no smell, and is usable for any purpose other then human consumption, since the effluent is still rich in metal deposits. Upon further filtration, the same effluent can be treated to a human consumption level.
Test results have proven we are producing:
Biochemical Oxygen Demand 5 day average (BOD5) of < 10mg/l (or ppm)
Suspended solids (SS) of < 10mg/l (or ppm)
Total Kjeldahl Nitrogen of < 10mg/l ( or ppm)
Nitrate of < 5mg/l (or ppm)
Our system is referred to as FAST. This is how the 4 technologies is being incorporated:
Activated Sludge Return is the process in which 99% live, healthy and hungry bacterial mass (a.k.a activated sludge) that has accumulated is allowed to be reused within the overall treatment process. Within the the FAST unit, the naturally created bacteria that has attached to the plastic growth media and accumulated to the point where a layer of bacteria falls off of the plastic growth media, is returned back into the treatment cycle. The two main benefits from this process are; 1) that the new incoming sewage is immediately attacked by the activated sludge micro-organisms that begin to absorb (digest) the sewage. The quick action speeds along the absorption (digestion) process creating an accelerated and enhanced sewage treatment resulting in a lower BOD and SS; 2) the right conditions are created for de-nitrification and total nitrogen reduction to occur in the anoxic zone.
Extended Aeration is the process where atmospheric air is introduced, through an external air pump, into the sewage wastewater. In the FAST unit the air mixes with the wastewater in the “attached growth” chamber. The arrangement of the airlines inside the attached growth chamber causes the wastewater to be constantly blended together with the oxygen from the atmospheric air. The oxygen activates the naturally occurring aerobic micro-organisms that digest and break down organic material in the sewage. This constant blending through the recirculating airlift arrangement of the air delivery system does not permit solids to settle in the aeration zone. The product or the aerobic organisms’ digestion process is Carbon-di-Oxide and water. The three main benefits of the extended aeration process are; 1) there are no hydrogen sulphide or methane gases produced; 2) that the efficiency of the aerobes’ absorption process is accelerated and enhanced which results in lower BODs and SS levels; and, 3) that the aeration process is the correct condition for nitrification to occur.
Attached Growth is the technology of allowing the micro organisms in the biomass, that perform the main task of digesting and breaking down sewage to inert gases and water, to attach to a material (a.k.a media). The main benefits of this process are; 1) that the bacteria are attached to a media and therefore do not float around in a suspended state; 2) low likelihood of suspended solids leaving the plant; 3) the media being submerged in liquid and partly exposed to the air creates the conditions for a better mix of the various types and colony size of the bacteria needed to perform particular sewage digestion tasks.
Trickling Filter is the process of having the wastewater pass through a filter to hold back and digest any residual paper or suspended solid materials. The main benefit of this process is the protection for drain fields and dispersal sites from an accumulation of particulate and paper that may plug up drain lines and clog soil or ocean water.
Note: the FAST sewage treatment system can be encompassed in a precast concrete septic tank, or fibreglass tanks. This system can be either buried in the ground, or it can sit above grade.
Here are some pictures to give you an idea of what the end products may look like:
A smaller unit. This is also available in fibreglass. The green inspection chamber on the left is for inspecting the clarification chamber, and to pump out the expired waste. The middle 4″ PVC pipe is intended for the air intake to the aeration chamber.