Small-scale and compact systems can be the answer to wastewater problems of small communities. Communities that are situated far from a regional WWTP find it both expensive and technically complicated to connect to such a WWTP. Examining the alternative of a local solution is inevitable in such cases.

  The technologies we offer is always a result of a thorough understanding of the specific situation of the client, taking into account both regional alternatives and local circumstances.

  Triple-T will conduct a feasibility study and thereafter a financial comparison between connecting to a regional system and a local solution.

  Traditionally the governmental authorities are not supportive of local solutions and will normally prefer a centralized solution. However our experience shows that presenting a smart economical solution can change this attitude and can gain the support of the relevant bodies.

  The advantages of local small-scale local over regional systems are:

     ·     Modularity – Additional treatment units can be installed according
          to the growing amount of wastewater, allowing saving in
          construction costs at each stage.

     ·     Economics – The construction costs as well as the operation costs
          can be accurately calculated. When connected to a regional
          system, the price may change and be dictated by the WWTP
          owners and operators.

     ·     Reuse of the wastewater - In agricultural communities, it is
          possible to use the effluents for local irrigation.

  The following technologies presented are examples of small systems that can be applied as a solution in small communities:

1. Attached Growth (AG) biomass
  A biological treatment process that uses special carriers designed to create a large surface area for biofilm growth, thus enhancing the treatment process without expanding the area used.

  Benefits:

     ·     Improved oxygen transfer

     ·     Reduced maintenance

     ·     Allows for expansion/upgrade without additional tankage

     ·     Nitrogen removal without increased hydraulic retention time

2. Rotating Biological Contractors (R.B.C.)
  The RBC process consists of a large disc with radial and concentric passages slowly rotating in a concrete tank. During the rotation, about 40% of the media's surface area is in touch with the wastewater. The rotation and subsequent exposure to oxygen allows organisms to multiply and form a thin layer of biomass. This large active population causes the biological degradation of organic pollutants. Excess biomass shears off at a steady rate and is then carried through the RBC system for removal in a clarifier.

  Benefits:

     ·     Stable operation without frequent supervision

     ·     Short wastewater retention time means a smaller area is required.

     ·     Reduced maintenance required

     ·     Simple operation

     ·     Easily modified for upgrades, retrofits and multiple applications

3. Wetland for wastewater treatment
  The treatment process is based on biological processes occurring in an ecological system combining saturated beds and plantations.
A population of Micro-organisms grows in the roots zone, decomposing the various pollutants into stable compounds.

  The benefits of the wetland treatment are:

     ·     The system can provide high quality wastewater;

     ·     The system normally does not require electro-mechanical
          equipment;

     ·     The operational costs are negligible;