Consisting, like the continuous first rain systems, of a spillway, a coalescence filtration system and a floating shutter, the accumulation first rain systems also include a weir inside the spillway, and a tank for underground or outdoor installation with inspection cap and vent.
The (possible) addition of a calming well and an oil-absorbing well ensure compliance with the table limits for the final delivery of the waste to T4 (onto the ground).
RAIN WATER SYSTEMS REGULATIONS:
The legislation on rainwater systems concerns in particular the sizing and the types of treatment envisaged depending on the final delivery.
As regards the regulations on sizing, the dimensions of the first rainfall storage systems depend on:
- From the discharge of purified water, or if the final destination of the discharge is in surface waters (AS or T3) or on soil (T4);
- From the Region of Installation (there are in fact specific regional regulations for Abruzzo, Emilia Romagna and Puglia).
A different regulation is envisaged for the sizing of continuous first rainfall systems.
As regards the standards and certifications for the final delivery of the waste, all Di Camillo’s first rain accumulation systems comply with the standards
- UNI EN 858/1-2 on dimensions, requirements and design principles of oil separators,
- Legislative Decree 04/03/2006 n.152, part 3 for the protection of waters from pollution and the management of water resources.
Furthermore, the underground first rain accumulation systems, with discharge into surface water (T3) also comply with regional regulations:
- R. 29 July 2010 n. 31, regulations for first rain water in the Abruzzo Region
- G.R. 14 February 2005 n° 286, first rain water regulations of the Emilia Romagna Region
and also comply with the C.A.M (Minimum Environmental Criteria)
- 2.8.2 Collection, purification and reuse of rainwater
- 2.7 Reduction of the impact on the hydrographic and surface system
COMPONENTS INCLUDED:
All systems for rainwater accumulation with delivery in tab.3 include a drain well, a sedimentation tank with timed pump and oil remover, and a well for fiscal sampling of samples.
For the discharge of the water in table 4, the first rainfall systems must also include an oil-absorbent sump. The first rain system with drainage in tab.4, therefore, includes a spillway, a first rain water accumulation tank, a stilling well, a coalescence deoiler, an oil-absorbing tank and a second rain bypass.
Furthermore, for the Puglia region, there is a particular regulation also for second rain water. In fact, these, like first rain water, must be further treated with a sand trap and an oil remover, before moving on to final delivery. Di Camillo is one of the very few manufacturers of special first rain systems, specifically designed to meet the regulations of the Puglia region.
