ppm setting
The quantity of product to be dosed for each litre of water is set on the pump, for example 10 ppm, 10 ml per 100 kg, 10%.
Production and dosing
Dosing stations
The most straightforward dosing solution: a dosing pump, controlled by a pulse-output water meter installed on the pipe, injects the chemical in proportion to the volume of water to be treated. Supplied on a tank, on a panel or on a skid, ready for installation.
- Constant, volumetric or proportional dosing
- One or two pumps
- On a tank, panel or skid
- Tested before delivery
1 – 1,000l/hPump flow rate
100barMaximum pressure
20,000lTanks up to
3Dosing modes
How it works
How volumetric dosing works
It allows the dosing of acids, bases, disinfectants, fertilisers, polyelectrolytes, flocculants and any product to be dosed according to the volume of water to be treated.
Volume measurement
The pulse-output water meter measures the volume of water that has passed and sends a proportional number of pulses to the pump.
Product injection
According to the pulses received, the pump performs the necessary injections: the dosing is matched to the volume of water treated.
Dosing
Dosing modes
Constant
Adjustable injection frequency and volume, with dosing activated by the pump timer or by an external start and stop contact.
Volumetric
According to the volume of water treated, measured by the pulse-output water meter (turbine or Woltmann, hot or cold water).
Water meters →Proportional
Proportional to an external signal: 0-4/20 mA, 0-10 V, Redox electrode, pH, conductivity, amperometric cell.
Measuring systems →
Products
Stations by product
Chlorine
Mixing and dosing of hypochlorite; hydraulic parts in PVDF.
Stabilised chlorine dioxide
With pumps for the activator and for the film-forming inhibitor, to protect the pipework.
Stabilised or generated on site →Peroxide and peracetic acid
Hydrogen peroxide and peracetic acid, also with pumps for film-forming inhibitors.
pH
Stations for acids and for bases.
Bromine
Mixing and dosing of bromine.
Redox
Disinfectant dosed in proportion to the measured Redox potential.
LDsRh system →Fertilisers
Fertilisers and acids for fertigation.
Polyelectrolytes and flocculants
For wastewater treatment and clarification.
TETRAMIX →
Applications
Applications
Drinking water
Raw water from wells and springs, private supplies and public waterworks.
Insight: well water →Domestic water circuits
Domestic water circuits, also for Legionella control.
Legionella control →Industry
Industrial process water.
Wastewater
Municipal and industrial wastewater.
Components
Station components
Tank
In PE, vertical cylindrical, from 120 to 1,000 litres (up to 20,000 on request), also pigmented, with safety bund; prepared for pumps, mixer, lances and fittings.
Tanks →
Mixer
Slow (3-blade, 150 mm) or fast (90 mm marine propeller), lubrication-free worm gear reducer, PVC-coated stainless steel shaft, FP seal against vapours.
Mixers →
Suction lance
With foot valve and filter and level probe, which stops the pump when the product runs out; keeps the tank closed.
Lances →
Safety valve
In the event of overpressure it discharges the product back into the tank.
Valves →
Static mixer
Ensures the dispersion of the product in the water and protects the pipe from direct contact with the product.
Static mixers →
Flow sensor
Verifies that dosing actually takes place and generates an alarm in the event of a fault.
Flow sensor →
Pulse-output water meter
Turbine type from 1/2" to 2" (1 – 35 pulses/litre) or Woltmann from 2" to 12" (1 – 1,000 litres/pulse), dry or wet dial, also PTFE-coated.
Water meters →
Calibration cylinder
Allows accurate calibration of the pump under actual operating conditions, ensuring that the set quantity of product is injected.
Versions
Tank-mounted versions
All components are pre-installed on the storage tank: the most essential and compact dosing configuration. Solenoid, stepper motor, peristaltic or motor-driven pumps, from 1 to 1,000 l/h and up to 100 bar depending on the model.
With AMS pump
AMS pumps →
With K pump
K and KMS pumps →
With T pump
T and TMS pumps →
With V pump
V and VMS pumps →
With Prisma pump
Prisma pumps →
With Velon pump
Velon pumps →
Panel-mounted
Panel-mounted versions
The system is supplied pre-assembled on a plastic panel, to make installation as simple as possible, with one or two dosing pumps.
One pump
Example of a pre-assembled panel for biocide dosing.
Two pumps
Example of a pre-assembled panel for biocide and antiscalant dosing.
Skid
Skid-mounted versions
Assembled and tested before delivery, for rapid integration and minimal plant downtime. All treatment systems can be pre-assembled on a panel, in a sealed box or on a skid, also with controllers, probes and remote control.
Small skid
One AMS, KMS or Prisma pump and one injection point; 600 × 800 mm (excluding the raised frame).
Medium skid
Two AMS, KMS or Prisma pumps and one injection point; 800 × 800 mm (excluding the raised frame).
Custom skid
Designed to the plant specifications, also with integrated measuring and dosing systems.
Example skid
Medium skid with two dosing pumps, electrical panel, PMMA cover and raised AISI 304 frame.
Skid components
Components
- Product inlet G1/2" DN15
- Calibration cylinder
- Electrical panel with switch
- Dosing pump
- Pulsation dampener (for solenoid pumps)
- Distribution manifold
- Pressure gauge with diaphragm seal
- Adjustable pressure valve 0.5 – 10 bar
- Safety valve
- Product outlet
Standard
- PVC frame and panel
- PVC-U inlet and outlet valves
- PVC and PTFE pressure and safety valves
- PVC-U DN15 PN16 pipework
- PVDF or PP through valves
- Pumps with PVDF or PP pump head and FP or EP O-rings
- PVC manifold
- Panel with switch
On request
- PMMA cover
- Raised AISI 304 frame
- Calibration cylinder
- Pressure gauge with diaphragm seal
- Pulsation dampener
- Modbus RTU or Wi-Fi remote control
- SMS alarm with 4G modem
- 4/20 mA output proportional to the dosed flow rate
Diagrams
Installation diagrams
In the panel-mounted version the station can also be installed in by-pass, with a calibration cylinder for calibrating the pump under actual operating conditions.
In-line dosing
Dosing on the line feeding the tank, upstream of the booster pump supplying the users.
By-pass dosing with one pump
Panel with water meter, pump, safety valve and calibration cylinder.
By-pass dosing with two pumps
For example disinfectant and film-forming inhibitor, or biocide and food-grade polyphosphate.
From cold water to hot water
The water meter installed on the pipe of the water to be heated controls the biocide pump; the flow sensor verifies the dosing and generates the alarm in the event of a fault; a second pump doses the polyphosphate.
Which one to choose
From the simplest to the most complete solution
For chlorine and other disinfectants the basic solution is the dosing station; to dose according to the concentration actually present in the water, measuring controllers are used.
Dosing station
The simplest solution: the pump doses at a constant rate or in proportion to the volume of water measured by the pulse-output water meter.
LDsRh
Dosing based on the Redox potential of the water: an economical solution, based on an indirect measurement.
Details →
LDsCL
The amperometric cell directly measures the disinfectant concentration in mg/l, ensuring maximum dosing accuracy.
Details →
LD Dual Parameter
Simultaneous management of two parameters, for example pH and chlorine, with a single controller.
Details →
Centurio PRO
Management of up to 10 parameters and of all the pumps in the installation, with touch screen and remote control as standard.
Details →Station design
Tell us the product to be dosed, the water flow rate to be treated and the place of installation: we will propose pump, water meter, tank and accessories, also in a pre-assembled version.