Wastewater Treatment Tanks

The Bio Media System, similar to the MBBR system, features a design without fixed media, effectively eliminating blockages often found in smaller treatment plants. This durable and stable product is crafted from tough polyethylene, making it easy to transport while providing a wide base for stability. As a compact sewage treatment plant, 

The Bio Media System, similar to the MBBR system, features a design without fixed media, effectively eliminating blockages often found in smaller treatment plants. This durable and stable product is crafted from tough polyethylene, making it easy to transport while providing a wide base for stability. As a compact sewage treatment plant, it offers significant cost savings; its lightweight and compact size enable easy installation and promote low maintenance, ultimately reducing expenses. Maintenance is straightforward, with the system needing to be emptied only every 6 months at full occupancy, and the compressor maintenance can be easily performed via the external housing. This compact system is an ideal domestic sewage treatment solution for homes with up to 6 inhabitants (4 bedrooms). Additionally, with a near-silent air compressor housed externally, the operation of the Harlequin wastewater treatment system is virtually silent.

Chamber 1 | Primary Settlement In a compact sewage treatment plant, raw sewage flowing to the CAP unit is received in the primary settlement zone. Here, gross solids (primary sludge) settle to the bottom of the tank, where they remain until the tank is desludged. The settled sewage displaced from the primary zone then flows into the subme

Chamber 1 | Primary Settlement In a compact sewage treatment plant, raw sewage flowing to the CAP unit is received in the primary settlement zone. Here, gross solids (primary sludge) settle to the bottom of the tank, where they remain until the tank is desludged. The settled sewage displaced from the primary zone then flows into the submerged filter zone, passing under a scum baffle. Chamber 2 | Aeration Chamber Flow circulation in the submerged filter zone is generated by the hydraulic effect of the outlet air diffuser. This causes settled sewage entering the filter zone at high level to be drawn down through the media, aerating the sewage in the process. The flow circulation ensures that the influent sewage receives several passes through the filter bed at low flow. In the filter zone, as the sewage passes over the filter media, it is purified by micro-organisms growing on the surface of the media. The growth of these micro-organisms results in an excess which is shed as solid particles known as humus solids. Humus solids settling at the bottom of the filter zones are recirculated with the flow of incoming sewage and are deposited on the top of the primary settlement zone. Chamber 3 | Final Settlement Sewage displaced from the submerged filter zone flows via a DIP pipe into the final settlement zone. The liquid displaced from the humus zone has now been fully treated and is known as final effluent. This effluent is suitable for discharge to a watercourse or soakaway, as defined in the consent to discharge issued by the Environment Agency. Humus solids from the final settlement tank are recirculated to the primary tank via the recirculation pipework. This process helps reduce the sludge build-up in the humus tank and prevents stagnation during very low inflow. The entire system exemplifies an effective domestic sewage treatment solution, such as the Harlequin wastewater treatment system.