Municipal & community
Drinking water production and distribution systems in the Municipality
The supply of clean, quality water for domestic and industrial use is increasingly a challenge. While demand for drinking water is increasing, fresh water sources are dwindling, and existing production and distribution infrastructures are becoming obsolete and may no longer meet increasingly stringent regulations.
There are also more critical areas from a geological point of view, which require specific and more incisive solutions to solve particular problems such as the presence of arsenic, which is more widespread in the aquifers of volcanic areas, or particularly polluted areas where hexavalent chromium may be present in groundwater, or areas where there is no access to the water network for contingent or structural reasons.
Responsibility for water intended for human consumption obviously lies with the waterworks operator, i.e. the public authorities, who must ensure that the water is healthy and free of pollutants, by providing drinking water and water purification.
The Municipality therefore needs reliable, sustainable and, above all, problem-specific solutions: effective, modular filtration systems that can solve any problem and ensure the highest water quality.
Culligan Solutions for the Municipality
Culligan offers the Municipality customised, effective and modular treatment systems capable of providing adequate responses and services, reducing waste, costs and installation time, to respond promptly to the need for drinking water or specific quality water.
The systems, designed and assembled in-house, are able to treat water from any type of source:
- groundwater from wells or boreholes
- surface water from rivers or reservoirs
- sea water for desalination
Media Filtration Systems
A pioneer in pressure filtration, Culligan has designed and manufactured hundreds of systems and patented several technologies for waterworks around the world that quickly remove contaminants such as arsenic, ammonia, iron, manganese, turbidity and suspended solids.
Easy to install and small in size – up to 60% smaller than traditional filtering systems – with a modular design that allows you to manage different flow rates, expand the system and upgrade it to meet increased needs, regulatory changes or revamping with remote control systems.
Multilayer pressure filters for water treatment are much faster than other systems, such as gravity filtration, and particularly suitable for situations where it is not possible to build an extensive pipe network connecting to a centralised treatment plant.
Specific plants for the removal of arsenic
Culligan has an important case history in this area.
Acqualatina SpA – manager of the Integrated Water Service in Southern Lazio (Italy) – found that arsenic concentrations were higher than the permitted limit and needed to rapidly modernise its water treatment plants to bring them into compliance with the new limits set by the Decree.
Culligan designed and built the largest arsenic removal and purification plant in Italy – and one of the largest in Europe – for the Aprilia municipal water network, capable of treating 2,160 cubic metres of groundwater per hour.
The plant uses a specially developed iron oxide-hydroxide adsorption removal technology. The presence of arsenic is constantly monitored by online analysis systems to promptly report any anomalies.
Water from six wells is pumped directly into the removal plant by Culligan pressure filters, which are able to guarantee very high flow rates – over 500 cubic metres of water per hour – while maintaining maximum filtration efficiency with minimum space requirements.
Reverse Osmosis for the production of potable water
Reverse Osmosis for the production of drinking water is the ideal solution to produce drinking water from well, river and sea water, through the process of filtration and desalination that allows to obtain a safe and reliable water with reduced running costs, thanks to skid-mounted systems that simplify the installation.
These plants use a selective ion exchange resin (SBA) filtration system to remove hexavalent chromium from drinking water, a highly toxic and carcinogenic substance.
Systems for the removal of hexavalent chromium are mainly used for the remediation of groundwater, without using chemicals and with low operating costs.
Containerised water treatment units
Containerised drinking water treatment systems are ideal when the supply of drinking water is not guaranteed by the aqueduct or the water network has been damaged: locations affected by natural disasters or hardship, construction sites for civil or industrial settlements or for temporary water treatment in the event of repairs or plant closures for emergencies.
Water treatment units can be installed inside containers or prefabricated units to create pre-assembled systems that can be placed on any site ready for use, or entire treatment lines to make water drinkable by eliminating all types of pollutants, ammonia, arsenic, iron and manganese, turbidity, bad tastes and odours.