Biotechnological products for wastewater purification and treatment

Maretto Engineering was established to design, build, install and market products and plants to be used for water treatment and wastewater purification.

Let’s clear up immediately the difference between treatment and purification:

Water treatment

It’s what you design, build and test in order to turn a primary water (well water, river water, lake water and also sea water) into a fluid characterized by a well-specific analysis for the next execution of production processes. For example the “water treatment” is made, when you prepare the water to dye, tan, brew or simply to produce drinking water etc.

Comparison between limit values for composition parameters in waters for human use:

Parameters	Units of measure	Drinking waters Legislative Decree 31/01	Mineral waters Decree 542/92
Chlorides	mg/litre	250	-
Sulfates	mg/litre	250	-
Bicarbonates	mg/litre	-	-
Sodium	mg/litre	200	-
Potassium	mg/litre	-	-
Calcium	mg/litre	-	-
Magnesium	mg/litre	-	-
Fixed residue	mg/litre	1500	-
Conductivity	:S/cm at 20 °C –	2500	-
Hardness	F° = French degrees	15-50 (recommended values)	-
Iron	µg/litre	200	-
Manganese	µg/litre	50	2000
pH	pH 6,5 - 9,5	-	-
Residual Disinfectant	mg/litre	0,2	-

Wastewater purification

It’s the design, building and test of plants aimed at the civil and industrial depollution of fluids previously used: such fluids can be poured into superficial waters, public sewers or, if allowed, into the ground; so, according to their destination, the fluids must comply with specific tables established for this purpose by the different competent ministries.

In both cases it’s almost always necessary to design and build tailor-made plants and use chemical and/or bacteriological products to obtain the desired results.

Maretto Engineering has developed an innovative line of biotechnological products, which are extremely effective, non-toxic and environment-friendly..

Competences

Our clients are final customers and today they don’t have to apply necessarily to concerns specialized in water treatment but, as for the construction of a building or of any other civil work, they can directly turn to a specialized planning office, which will deal on behalf of them with the design of their plant, with the supervision of construction and finally also with the accounting with the direct suppliers of the machines.

The decades-long experience of our technicians has made all this possible: in fact, during their professional life, they held absolute responsible posts as a Technical Manager and/or Purchase Manager or even as a Managing Director of Italian and foreign leading companies in the water treatment and/or wastewater purification market.

Our Planning Office, always ready to improve and bring up-to-date products and plants, has designed and mass-produced several plants, which can meet today, in most cases, the customers’ requirements in real time. However our experts are able to face any possible purification or treatment problem encountered by the customers.

Moreover, supported by the utmost collaboration established with multinational concerns manufacturing chemical and/or biotechnological products, we are able to supply our customers with all the compounds suitable for the purification process optimisation, not to mention the considerable compound saving obtained by our customers, because we can intervene on any installed plant thanks to our after-sale Service Department.