System Description

   Every BIOCON system consists of the following critical components :

   1.  TREATMENT TANK
   It's a tank of cylindrical shape, where all relevant processes take place. Its internal part 
   consists of two chambers divided by a stainless steel screen of 2mm mesh for retaining 
   coarse particles. The first chamber is where the sewage inlet comes in, the macerator 
   pump is mounted and the outlet of the recirculation pump is also coming connecting the 
   fluids of the two chambers. In the second chamber exist three settling departments with 
   interconnecting outlets for the recirculation.

    1.1  COARSE PARTICLE RETENTION SCREEN 
   This is a screen fitted inside the treatment tank. It has a mesh of 2mm and is intended to 
   keep sewage particles more than 2mm inside the first tank chamber for further breaking 
   and macerating until they pass the screen. It is placed vertically up to the upper part of 
   the tank and can be easily dismounted for cleaning. From the inspection door the screen 
   status can be evaluated for further cleaning action to be taken. A manometer also has 
   been mounted on top of the first chamber, to indicate any reduction of the screen useful 
   area from blockage. 

   1.2  WATER SPRAY
   Water is induced in the second tank champer by a vertical pipe just in front of the 
   retention screen and is supplied by a seawater pump. Its function is to clean the screen 
   as soon as sewage is entering the unit and also after the whole cycle has finished, 
   during the discharge period.

   1.3  LEVEL INDICATORS
   At the left hand side of the treatment tank beneath the electric box there is a vertical pipe 
   where externally are mounted three magnetic contacts. Inside this pipe there is a float 
   with a magnet on its top. Each magnetic contact is responsible for presetting the sewage, 
   water and overfilling level.

   PUMPS 
   Every BIOCON system is equipped with several pumps suitable for different functions.

   2.  MACERATOR AND MINIMIZER PUMP
   This component is the heart of every BIOCON system. It macerates all sewage coming
   in making the fluid completely homogeneous in terms of suspended solid dimensions.
   All solids are cut into 0.5-mm pieces suitable for further oxidation. This is not only a
   macerator, but also a pump with a certain volume flow rate and manometric head. Its a
   special construction made by TECHNI SA, every part of it made from 316 SS even the
   casted casing.  

   3.  SPRAY WATER PUMP
   This is a pump responsible for supplying water to the pipe sprayer for cleaning the
   retention screen.

   4.  RECIRCULATION AND OXIDATION PUMP
   This pump recirculates continuously the content of the second chamber into the first
   chamber by taking first the settled solids. Inside its suction there is a suitable pipe inducing
   air into the sewage stream, mixing 100% air into the sewage volume every time for
   oxidation of the organic particles.

  5.  DISCHARGE PUMP
   It is used to discharge overboard the treated and disinfected sewage.

   6.  SODIUM HYPOCHLORITE DOSING PUMP
   This pump provides the necessary quantity of sodium hypochlorite solution inside the
   treatment tank to disinfect the sewage from faecal coliforms and other bacteria. A certain
   quantity is injected in every cycle.