VWT Italia -­‐ Ver. GB 2.1 Rif. FM 1208

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1 Technical characteristics Nominal production of distillate with water: 6000 [l/24h] Available versions: RV N 6 AA# (austenitic stainless steel)

Electrical equipment: RV N 6 -­-­3 (400 [V] 50 [Hz] 3F) RV N 6 -­-­4 (460 [V] 60 [Hz] 3F)

Construction: single module on a stainless steel frame

Primary /distillate heat exchanger: vertical external shell and tube with natural circulation (heating through the tubes, condensing through the shell)

Evaporation type: natural circulation under vacuum

Evaporation conditions: absolute pressure ~ 60 kPa temperature ~ 87 [°C]

Distillate temperature: 30-­90 [°C] depending on feeding temperature and on the discharge mode chosen (e.g. manual discharge)

Concentrate temperature: ~ 87 [°C] Drops separator: demister, grate type with packing elements Technology of heating/cooling: VR (vapour recompression)

Blower: positive displacement blower (controlled by a variable frequency drive)

Vacuum system: created by the blower

Control:

automatic, continuous 24/24h 7/7 days by PLC Siemens S7-­300;; status information and consent to equipment operation remotable through digital signals

Operator panel: touch screen Proface GP4401 International Protection Rating: IP 54 Noise: < 75 [dB(A)]

Main reference legislation: (CE marking)

Machinery Directive (2006/42/CE) Electromagnetic compatibility (2004/108/CE) Electrical safety (EN 60204-­1)

2 Nominal performance The data reported in the following table refer to the performances achieved during FAT (Factory Acceptance Test) with clean machine fed with tap water in standard atmospheric conditions. Version RV N 6 -­-­3 RV N 6 -­-­4 Electrical feed 400 [V] 50 [Hz] 3F 460 [V] 60 [Hz] 3F Maximum production of distillate with water 6000 [l/24h] ± 10% 6000 [l/24h] ± 10% Absorbed power in steady state working 14.5 [kW] ± 10% 14.5 [kW] ± 10% Installed power 43.5 [kW] 43.5 [kW] Power factor [cosø] 0,9 [cosø] 0,9 Electrical specific consumption per litre of distillate 47 [Wh/l] ± 10% 47 [Wh/l] ± 10%

Heat generated by thermal dissipation 6 [kW] ± 10% 6 [kW] ± 10%

3 Functional description The machine RV N 6 is a mechanical vapour recompression evaporator for the treatment of water based liquids. For component identification refer to Figure 1.

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Figure 1

The numbers within a circle are the main sensors of the machine. The Roman numerals and the dashed lines indicate the optional components. The numbers near the inlet and the outlets indicate the connection to the process lines.

3.1 Process liquids circuit The liquid to be treated, before entering the boiler D01 (where the vacuum conditions of 60 kPa and 87°C are kept), is preheated in the heat exchanger E02 by the distillate exiting from the distillate tank D02. The liquid is fed through opening of valve VP01, controlled by the working level sensor in boiler LS01. The concentrate hold into the evaporator recirculates within the boiler D01 and heat exchanger E01 by natural convection created by the difference in density of the liquid in the two units;; heat needed for evaporation is provided within the heat exchanger E01 by the vapour condensing on shell side on the external tube surface. The produced vapour passes through the drops separator (H04) in order to eliminate liquid drops still carried by the vapour and improve the quality of the output distillate. The blower K01 compresses the vapour and sends it to the heat exchanger E01 (shell side) where it releases the latent heat to the process liquid. The condensed steam provides heat to E02 before being discharged. The sensor CE01 (present if optional I is installed) measures the conductivity of the distillate: high conductivity means high entrainment of liquid in the boiling chamber and the machine shows an alarm to the operator. Distillate is collected into tank D02 and discharged by centrifugal pump G03. Distillate temperature and level within D02 tank are measured by probes TE02 and LT04. The flow sensor FT01 measures the amount of distillate discharged. Distillate is used as cooling fluid for K01. The RV N evaporator is designed to operate in batchwise mode: the machine is emptied completely at end of cycle and refilled at the start of the new cycle. Once the desired concentration yield is reached, the cycle is ended and concentrate is discharged automatically by means of pneumatic pump G07 through pneumatic valve VP05. During the start-­up of the machine the liquid in the boiler is heated by means of the ER02-­03 resistors. The incondensable gases are discharged through a dedicated chimney (outlet 5, see Figure 1).

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3.2 Mechanical vapour recompression The produced vapour in the boiling chamber D01 is sucked into the positive displacement blower K01 that, by means of the compression, raises the temperature;; afterwards the vapour passes through the shell of the exchanger E01 where it condenses and releases the latent heat to the recirculated liquid of the boiling chamber. Valves VP10/VP20, during start-­up phase, are open in order to allow a gradual start-­up of the blower K01. The blower is provided with a injection system fed by distillate (to control the temperature) realized through EV18 valve and H07 nozzle.

3.3 Thermal recovery systems Thermal recovery is achieved by the exchanger E02. The distillate enters the tube and shell heat exchanger E02 and cools down, before its discharging, as a consequence of the heat exchange with the liquid to be treated. Temperature sensor TE08 measures the temperature of the liquid to be treated after passing through the thermal recovery exchanger.

3.4 Auxiliary liquids and chemicals • Antifoam: is pressurized by G05 pump and injected through VP06 valve and H03 ejector;; if Optional III is

installed, when the SS01 foam probe detects foam an additional antifoam quantity is metered into the system until foam disappears;;

• Tap water: to clean SS01 foam sensor if Optional III is installed • Tap water: for filling of chemical cleaning tanks (if Optional IV is installed);; • Additive metering with pump G06 and pneumatic valve if the optional system II is installed. • Bactericide metering in the delivery pipeline of distillate discharge pump, if the accessory system AM BT

D is installed. • Acid chemical for machine cleaning (must be approved by the manufacturer) • Alkaline chemical for machine cleaning (must be approved by the manufacturer)

3.5 Automatic chemical washing system The machine is equipped with an automatic chemical washing system that allows periodic cleaning of boiler and heat exchangers. Chemical washing cycle is made by the following phases:

1. Emptying of the process liquid 2. Filling of the evaporator with the cleaning solution pumped from storage tank (D51 or D52) 3. Circulation of cleaning solution into D01 and E01 ad E02 heat exchangers 4. Emptying of the evaporator and transfer of the cleaning solution into its dedicated tank D51 or D52 5. Phases 2 to 4 are repeated with the second cleaning solution.

The preparation of the cleaning solutions is made in optional tanks D51/52 (or supplied by the customer). This operation can be done in manual mode or in automatic mode if option OW CH-­S-­GC is installed. The chemical cleaning solutions are stored and reused for a number of washing cycles, in order to profit of the chemicals activity against fouling. Chemical solution recirculation and discharge are achieved by G07 pneumatic pump. Pneumatic valves (VP51 to VP62) are operated in order to direct the solution in the appropriate portion of the unit avoiding contact between different chemicals. The washing circuit, already installed in the machine, must be completed with tanks D51/52 (option IV OW CH-­GV-­S or supplied by the customer) and can be integrated with valves group for the automatic preparation of cleaning solutions (OW CH-­GV-­S-­GC option V): this option allows the suction of the concentrated chemical through an ejector operated by tap water;; chemical product and water are thus mixed and then stored in the tank. Filling sequence is automatically operated through pneumatic valves VP55/56 and VP60/61.

4 Configurations The evaporator can be configured according to the specific needs of the customer in terms of chemical-­physical properties of the feed liquid and ambient temperature of the installation site. The configurable components are described in the following table, with their identification codes.

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Component Code Description Criteria for choosing Blower K01 C BR SS Blower in stainless steel Chemical-­physical properties of

the feed liquid C BR CI Blower in cast iron Electrical panel C EB AC Electrical panel with air conditioner Ambient temperature of the

installation site C EB NC Electrical panel without air conditioner

5 Options and Accessories (*1) Code Description Standard/Opt [-­] OC FM D Distillate flow rate measuring device S [-­] [-­] Provision for level control on external process liquid tanks S [-­] OM AF F Antifoam agent dosing device S I OC CN D Distillate conductivity meter device O II OM AD F Additive metering device O III OC AF F Automatic foam control device in boiling chamber O [-­] OR FV S Vapour condensation device with dry cooler O [-­] OW CH-­GV Automatic chemical washing system – Valves group S IV OW CH-­GV-­S Automatic chemical washing system – Valves group + tanks 500 liters O

V OW CH-­GV-­S-­GC

Automatic chemical washing system – Valves group + tanks 500 liters + charging group for preparation of washing solutions

O

[-­] OC EN Ethernet Interface device (*2) O [-­] OC PB Profibus Interface device (*2) O

[-­] OI RC Remote control device via ADSL/UMTS. (*2) (*3). Ethernet option “OC EN” required

O

[-­] AM BT D Bactericide metering device: allows the metering of bactericide product

O

*1) See the diagram in the Figure 1. *2) To be requested in the order. *3) Can be combined with remote control contract EVA-­Link.

6 Construction materials Code Description

INOX 304/L Austenitic stainless steel AISI 304 (EN 1.4301) / AISI 304L (EN 1.4307) INOX 316/L Austenitic stainless steel AISI 316 (EN 1.4401) / AISI 316L (EN 1.4404) INOX 316Ti Austenitic stainless steel AISI 316Ti (EN 1.4581) INOX Stainless steel alloy PVDF Polyvinylidene Fluoride IRON Cast iron (UNI-­ISO 185 G 200) FPM Fluoropolymer PTFE Polytetrafluorethylene NBR Nitrile rubber

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Component ID RV N 6 AA# Lower wall of evaporation chamber D01 INOX 316/L Dome of evaporation chamber D01 INOX 316/L Distillate storage tank D02 INOX 316/L Tube and shell heat exchanger (tube -­ shell) E01 INOX 316/L Thermal recovery exchanger (tube -­ shell) E02 INOX 316/L Distillate discharge pump G03 INOX 316/L Concentrate / washing solution discharge pump G07 INOX 316/L Blower. Configurations: -­ C BR SS -­ C BR CI

K01 INOX IRON

Structure and frame -­ INOX 304/L Piping and line parts -­ INOX 316/L + PVDF Level switch inside the boiling chamber (blades) LSnn INOX 316/L / INOX 316Ti Gaskets -­ NBR / PTFE / FPM Other materials are available upon request.

7 Dimensions and clearance zones

Figure 2

Above the machine a free height of at least 1 m must be forecasted for maintenance operations.

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8 Dimensions, weight, packaging, storage and handling The standard machine is supplied with protection panels and the standard packing is constituted by the panels themselves. The standard machine is designed to be stored and installed indoor. Type Module Dimensions [mm] Weight [Kg] Standard packaging

Evaporator module 3000 x 1500 x 2750 h

2600

Packaging with wooden crate Evaporator module 3000 x 1700 x 2850

h 3100

Total empty weight of machine/under normal conditions with water see Figure 2 2600/3000

The temperature of storage site may be within +5 e +45°C. The machine may be handled by transpallet or lift truck having forks at least 1600 mm long or using a self-­‐propelled crane or overhead travelling crane;; previously machine shall be hooked to the provided eyebolts using a spreader lifting beam for distributing the load.

9 Working temperature Temperature Working conditions 5÷40 [°C] Normal conditions 0÷5 [°C] Start up allowed only with precautions >40 [°C] Electrical panel with air conditioner configuration C EB AC -­‐ Contact Veolia Italia

The machine is designed to be installed at a maximum altitude of 1000 metres a.s.l. (for installations at higher altitude contact VWT Italia). The nominal performances stated in this document are guaranteed with a feed temperature between +20 and +70°C;; these performances are guaranteed for an atmospheric pressure of the installation environment of 1013 mbar (about 14.7 psi corresponding to 0 meters above the sea level).

10 Installation requirements The machine has to be installed in a level position in a location that can support the weights listed in section 7. Around the machine perimeter it is necessary to set some clearance zones to allow the personnel and the maintenance operators to work with no obstacles and to keep the air transit free (shown in Figure 2). The features of the liquid connections and pipes to the process liquids are hereafter listed: The features of the hydraulic connections are listed below:

(*1) Description Type DN [mm]

Available pressure in output [barg]

Required pressure in input

[barg]

1 Liquid to be treated Flanged 15 -­ 2 2 Concentrate

discharge Flanged 25 ~3 -­

3 Distillate discharge Flanged 15 ~2 -­ 4 Tap water supplies Pipeholder 20 -­ 2.5-­3

(*1) See Figure 1 The sectioning of the process lines by means of manual valves is at user’s charge. The liquid to be treated must contain a low amount of coarse material not to create that deposits which could clog some parts of the machine. Otherwise it is necessary to install a feed prefiltration device. The machine is supplied with a collector for the conveyance of vapour and non-­condensable gases (see output 5 in figure 1) that must be advisably canalized, if necessary, in respect of the local regulations.

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The machine requires the following utilities to operate:

Equipment Required pressure [barg]

Flow rate [Nm3/h] Connection Specifications

Compressed air

RV N 6 -­-­3 / RV N 6 -­-­4

6 20 Tube PE (Dext 12 mm)

Dehydrated and without oils

Equipment Frequency (Hz) Voltage (V) Nominal current (A) Supply

Electric energy RV N 6 -­-­3 50 (±2%) 400 (±4%) 80 3 PHASE +

GROUND Electric energy RV N 6 -­-­4 60 (±2%) 460 (±4%) 80 3 PHASE +

GROUND The electric cables are at customer care and need to be connected to a switch suitably designed by a qualified technician, following the good working regulation and respecting the electric cabinet rating.

11 Environmental Impact Reduction: CO2 emissions Below are the results of our Carbon Footprint study and a comparison with an extreme case of pollution: kgCO2eq/m3 liquid waste treated 30 Percentage of emissions avoided with respect to incineration of the liquid waste -­97,6% The first data value represents an average between the various industrial uses considering a use of the machine 24h/d, 330 d/y, for 10 years, road transport of the machinery to 1000 km from production site of the manufacturer and road transport of the chemical products for a distance of 100 km from the customer’s site. The data of the comparison with incineration was weighted on the yield of the machine, i.e., the ratio between the initial liquid waste to be treated and the residual concentrate to be disposed of.

12 Chemical products Chemical products are required during the normal operation of the machine. In order to obtain the best performances together with minimum consumptions, the manufacturer recommends using "Hydrex" chemical products. "Hydrex" is the VEOLIA brand that meets the chemical products requirements of the wastewater treatment and process water production. Notes -­ For details concerning the safety and the installation of the machine refer to the use and maintenance manual. -­ The data in this document are indicative. VWT Italia reserves the right to change any data without prior notice. The front-­page photograph is neither representative of all versions nor mod