Denitrificators - Water Treatments and Swimming Pools.


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NITRATES: CAUSES AND SOLUTION OF A PROBLEM

The environmental contamination caused by nitrates is increasing in these last few years becoming a huge and relevant problem caused by the progressive and uncontrolled increase of their presence in the soil and in the deep and superficial waters. The reason of the worrying phenomena must be searched in many directions but principally in the always most frequent use of nitrogenous fertilizations in the agriculture, it the increase of the volume of the human and animal wastes and in the industrialization's process that brings about industrial wastes with high concentration of nitrogenous components which, percolating the ground, usually contaminate also the deepest ground water tables. In the last few years many scientists have put their attention on many important researches about the presence of nitrates in the water, and they now consider these substances very dangerous for the health and essentially for their effect on the methemoglobins and on the cancers.
The excessive presence of the nitrates makes a corrosive action towards zinc and tin, creating considerable inconveniences in some technological activities. The experts have also observed that when a considerable quantity of nitrates accumulates into an electroplated tank of water and you make it pass into electroplated tubes you could have a huge development of nitrites (NO2^-) for the reduction of the nitrates and this process is often wrongly attached to the pollution. The nitrates, in according to the regulations in force, are allowed in the drinkable water til to 50 mg/l NO3^-, instead in some technological uses their concentration could be considerably lower.

The double body Cullwater denitrificators are completely automatic equipments that are used for the selective removing of nitrates and sulphates or of nitrates only. This transformation is due to our particular and specific anionic resin in form as Cl– with ionic change, highly selected in the granulometry for a long duration and a minim consumption of regeneration (sodium chloride), necessary for the reactivation, called "A200E" for the change of nitrates and sulphates and "A520E" for the change of sulphates only.
The double body Cullwater denitrifications are built in 34 completely automatic models with connections of 3/4'' till 3'' with time command or volume command.

Time command: The time command makes the regeneration of the denitrificator start in precise hours and on the grounds of supposed water's consumptions. If the consumptions are variable and unpredictable the regeneration can be effected in advance (waste of regeneration) or in late (leakage of nitrates and sulphates in service).
Volumetric command: The volumetric command makes the regeneration of the denitrificator start when the resins exhaust their capacity of change with evident conservation of regenerator.

Model	Cyclic capacity and salt consumption in Kg for regeneration		Resin LT	Middle capacity in service LT/MIN	Diameter of connections in and out	Dimension on the floor in (mm)			Capacity tank of salt	Weight spedition in kg
	NO^3-	Kg				L	P	H
Automatic denitrificators S 541 double body
AeS/N 724 10A	200	2	10	5	3/4"	660	470	800	100	35
AeS/N 735 15A	300	3	15	7,5	3/4"	660	470	1100	100	40
AeS/N 835 20A	400	4	20	10	3/4"	680	470	1100	100	45
AeS/N 844 25A	500	5	25	12,5	3/4"	710	470	1360	100	50
AeS/N 1035 30A	600	6	30	15	3/4"	730	470	1100	100	55
Automatic denitrificators S 3000 double body
AS/N 724 10A	200	2	10	5	1"	660	470	800	100	35
AS/N 735 15A	300	3	15	7,5	1"	660	470	1100	100	40
AS/N 835 20A	400	4	20	10	1"	680	470	1100	100	45
AS/N 844 25A	500	5	25	12,5	1"	710	470	1360	100	50
AS/N 1035 30A	600	6	30	15	1"	730	470	1100	100	55
AS/N 1040 35A	700	7	35	17,5	1"	730	470	1230	100	60
AS/N 1048 40A	800	8	40	20	1"	730	470	1430	100	65
AS/N 1054 45A	900	9	45	22,5	1"	790	530	1650	150	70
AS/N 1062 50A	1000	10	50	25	1"	850	530	1820	150	75
AS/N 1450 60A	1200	12	60	30	1"	850	530	1550	150	85
AS/N 1457 75A	1500	15	75	37,5	1"	870	530	1610	150	100
AS/N 1465 100A	2000	20	100	50	1"	890	530	1960	200	140
AS/N 1665 125A	2500	25	125	62,5	1"	940	530	1960	200	175
AS/N 2062 150A	3000	30	150	75	1"	1110	530	1850	300	210
Double body industrial automatic denitrificators S 2850
AS/N 2244 175A	3500	35	175	87,5	1.1/2"	1160	600	1450	300	240
AS/N 2254 200A	4000	40	200	100	1.1/2"	1160	600	1700	300	260
AS/N 2260 250A	5000	50	250	125	1.1/2"	1160	600	1850	300	330
AS/N 2460 300A	6000	60	300	150	1.1/2"	1320	700	1850	400	390
AS/N 2471 350A	7000	70	350	150 - 175	1.1/2" - 2"	1420	800	2140	400	450
AS/N 2471 400A	8000	80	400	150 - 200	1.1/2" - 2"	1420	800	2140	400	520
AS/N 3072 450A	9000	90	450	150 - 225	1.1/2" - 2"	1590	800	2250	500	600
AS/N 3072 500A	10000	100	500	150 - 250	1.1/2" - 2"	1790	1000	2250	500	650
AS/N 3072 550A	11000	110	550	150 - 275	1.1/2" - 2"	1790	1000	2250	800	700
AS/N 3072 600A	12000	120	600	150 - 300	1.1/2" - 2"	1790	1000	2250	800	750
AS/N 3672 750A	15000	150	750	150 - 375	1.1/2" - 2"	2300	1350	2250	1000	950
AS/N 3672 800A	16000	160	800	150 - 400	1.1/2" - 2"	2300	1350	2250	1000	1000
AS/N 4272 1000A	20000	200	1000	150 - 500	1.1/2" - 2"	2400	1350	2250	1000	1250
AS/N 4872 1250A	25000	250	1250	150 - 500 - 625	1.1/2" - 2" - 3"	2250	1350	2250	1000	1550
AS/N 4872 1500A	30000	300	1500	150 - 500 - 750	1.1/2" - 2" - 3"	2550	1350	2250	1000	1800

OPTIONAL
Automatic by-pass for misheling
2 flowmeters with valves of regulation of treated and not treated water
Head with connection high flow S 2900 from 2471-2" head with connection S 3900 to model 4872-3"
Volumetric unit control – V connection from 1" - 1.1/2" - 2" - 3"

DATAS OF WORKING: PRESSURE: min. 2 Bar - max. 7 Bar
TEMPERATURE: min. C°5 - max. C°50 - ELECTRIC POWER: 220 / 24 Volt