Ecomarca operates in the sector of meat and fish processing and it is responsible for the waste water treatment (management of processing cycles, waste water treatment) and premises, work surfaces and equipment washing and sanitization, by controlling and reducing bioburden.
WASTE WATER TREATMENT
Waste water obtained from the slaughtering of meat and fish products is characterized by the presence of significant residues of meat, skin, fat, fishbone fragments, with a content of organic and dissolved nitrogenous matter which is considerably high.
Even if these processes do not normally involve the presence of toxic substance, waste water may contain biocides resulting from sanitising installations, work surfaces, floors and equipment.
In many cases, waste water obtained from dairy processes is variable due to the working cycles, with peaks of both organic and hydraulic load.
Main characteristics of the treatment plant
Treatment plants for slaughterhouses and firms for fish processing must take into consideration the following characteristics:
- Variability of the organic load (COD, Chemical Oxygen Demand) during the washing stages, also according to seasons and the type of meat/fish processed;
- Presence of even rough fragments of skin, fat, and fishbone and bone residues inside the waste water;
- Presence of biocides and harsh reagents resulting from washing processes.
For the proper sizing of the treatment system, all the variables related to activities carried out inside a winery must be considered; the plant must necessarily be flexible in order to adapt to changing waste water conditions.
For this reason, Ecomarca performs a preliminary analysis at the customer premises in order to take note of processing peculiarities and to identify any improvable situations: the first treatment may already occur inside the winery!
Ecomarca uses the most advanced technologies available for making purifiers, which combine biological processes with the most advanced systems of separation of clarified water. These purifiers are managed by special software allowing the automatic and interactive operation of the waste water treatment plant.
In any case, the proper treatment system foresees the application of biological processes with activated sludge. The sizing of such treatment systems must necessarily consider the preliminary removal of solid and fat content inside the waste water, in addition to integrate processes of complete removal of nutrients such as nitrogen and phosphorus.
The main types of treatment plants for slaughterhouses and firms for fish processing are the sequential (SBR, Sequencing Batch Reactor) and the membrane ones (MBR, Membrane Bio Reactor).
SBR plants are suitable for the treatment of waste water characterised by a strong variability over time, both in terms of pollutant and hydraulic load, as it happens inside slaughterhouses and firms for fish processing. SBR plants allow treatment during all the 24 hours, by accumulating a part of the waste water during the day and carrying on the treatment cycle at night. The main characteristic of SBR systems is to carry out all the stages of the purifying process within a single compartment in a sequential manner.