Council's Environmental Health Product is responsible for ensuring that the set up and alteration of onsite wastewater treatment systems (septic tanks) throughout the Shire is done in accordance with the current Environment Protection Power (EPA) code of practice. A septic tank in a natural way produces gases (brought on by bacteria breaking down the organic material in the wastewater), and these gases don't smell good. Sinks therefore have loops of tube called P-traps that hold water in the low loop and block the gases from moving back into the home. The gases stream up a vent tube instead - if you look at the roof top of any house, you will notice a number of vent pipes poking through.
When wastewater enters your septic fish tank, it is in a natural way split into three parts. Stable waste sinks to underneath of the tank, where bacterias in the tank breaks down the solid matter, making it sludge. The middle layer of waste is mostly water, while extra fat and oils float to the most notable of the container, forming scum. Once stable waste is divided into sludge, gravity moves the through sloped pipes into the drainfield, where it is distributed into the garden soil.
A single area septic tank will provide the minimum appropriate treatment to home wastewater, whereas multiple area tanks or two solo tanks in series will perform better. Multiple compartments will improve biochemical oxygen demand (BOD) and total suspended solids (TSS) removal, as additional compartments provide better cover against the carry-over of solids in to the release pipes (US EPA, 1980).
To ensure owners are not discouraged from attaching to sewer when it becomes available, there is no legal obligation to have the disused system decommissioned during sewer connection. A septic system is generally powered by nothing but gravity Water moves down from the house to the tank, and down from the reservoir to the drain field. It is a totally passive system.
Constructed Water Treatment Wetlands are shallow lagoons and mainly designed in hot climates since plant life is key. Productive plant development year-round is desired for the constructed wetland plants to help dissipate the nitrogen and truly treat the effluent. Built wetlands show the most promise for a carefree low-maintenance treatment area, but you do generally need to stay in a non-freezing climate. They are an outstanding choice for greywater removal , going for a major load from the septic container and leach field system (blackwater only - toilets and dishwasher).