Premier Plastics Inc. has 25 years' experience with executive design and installation of below floor septic tank alternatives. The main element design factor of poly septic tanks for below floor use is the resistance to compression buckling or pressure from the outside in. This is other to above earth tanks where in fact the pressure is from the within out. The main element design component is the tensile durability of the material. To avoid buckling, below surface tanks have a thicker wall and are usually spherical in shape with light ribbing, or non-spherical (loaf condition) with heavy ribbing. The tiny flat triangular ribbing design of our SuperTanks contains the stresses in-line with the chiseled surfaces which bring about a profile that resists pressure evenly from the most notable, the sides, and the ends of the tank. No others container design can claim this. Never grind up (macerate) your sewage before sending to a septic container unless absolutely necessary. Pumping cared for sewage (after septic container) up to the leach field with lift up station is usually a choice, but do not macerate (pump) effluent before the septic reservoir. The septic fish tank operates by digesting solids and settling sludge to the bottom and allowing grease to float to the top of the septic tank. Macerating the sewage before getting into the septic reservoir will create a septic container without the large solids, only a cloud of earth up sewage contaminants. While you send these particles out to the leach field, you are bound to eventually clog the land with bio-mat and then your leach field fails.
In areas with either shallow groundwater and/or where only a slim part of free draining topsoil overlies less absorbent soils, the drainage receptacles may need to be installed fully or partially above the natural surface. This is to achieve the required groundwater clearances and/or to permit effluent to be dispersed into and become absorbed by surrounding soils.
Nowadays, septic tanks are made in GRP and polyethylene which commonly are spherical in shape with a thin shaft at the very top to a manhole cover at ground level. These tanks do not produce the same quality of effluent as traditional brick, cement or GRP two chamber tanks and cannot be placed in front of many septic tank conversion units, like the FilterPod and BioKube.
With moving normal water, especially septic tank normal water with some heat and natural activity, you don't have to stress about freezing issues with proper unit installation. Key is a well-bedded fish tank in plenty of +/- 3/4 inches gravel. In frosty climates, install at least one ft . of gravel under and around the settling tank to prevent sodden, frozen soil (frost) from touching the tank sides. In extremely cold climates, the settling basin lid and surrounding area can be covered with tarp and 2 inch foamboard insulation and then buried at least one foot under finish grade. While possible to set up a 12 in . or 18 inch extension to bury the settling basin deeper, it is not necessary or beneficial to bring the basin lid completely to the top. Even in the warmest climates, you should at least cover the lid with mulch to safeguard clear plastic from UV sunlight damage and make it simpler to uncover when checking fish tank and filter annually.
South Dakota has developed a recognition program for septic container system installers. The program means that the installers understand the design requirements. To become a certified installer you will need to move a test with a score of 70% or higher. You may either submit an internet demand or a written request for a duplicate of the test or contact Scott Hipple at (605) 773-3351. Also, please contact Scott if you have any questions about septic tanks or installer official certification. The Department sustains a set of professional installers for use by the general public.