TECHNOLOGY AND INSTALLATION FOR SODIUM HYPOCHLORIDE PRODUCTION ON THE PLACE OF USE,

1. TECHNOLOGY AND INSTALLATION FOR SODIUM HYPOCHLORIDE PRODUCTION ON THE PLACE OF USE, FOR DRINKING WATER DISINFECTION WITH AUTOMATIC DOSAGE www.hlorogen-bg.com

2. ABOUT THE COMPANY Main activity of TMK LTD is representation of chlorogen plants and Automatic Dosing System. Company’s scope of activity is connected with design and installation on site of systems for automatic disinfection of drinking water and personnel training for system maintenance and operation.

3. WHAT IS HLOROGEN ? Hlorogen is a system device for electrolytic production of chlorine in the form of sodium hypochloride solution (NaOCl); this is done on–site of disinfecting agent consumption in absolutely safe way. Since no gaseous chlorine is present, water chlorination is absolutely safe due to system design. Sodium hypochloride solution production is simple demanding just salt  softened  water and electric energy. Exploiting expenses are two times lower compared  to gaseous chlorine disinfection, or industrial sodium hypochloride. The system is easy to use and demands minimalmaintenance and it is fully automated. Its operation period is 25 years.

4. DISADVANTAGES OF OTHER WATER DISINFECTION SOLUTIONS • GASEOUS CHLORINE • Danger of chlorine leakage and necessity of trained personnel • Danger of chlorine leakage during transportation – ecologic disaster • Impossible to store large quantities and obligatory location of stores • INDUSTRIAL SODIUM HYPOCHLORIDE • Causes corrosion and sedimentary limestone on the equipment • Gaseous chlorine is emitted • Loses its concentration when in contact with air

5. HLOROGENTYPES OF PLANTS • IN MODULAR CONNECTIONS WE CAN PRODUCE PLANTS WITH CAPACITY OF 2, 3 OR MORE KGS/H

6. BASIC OPERATION  Water from the pipeline fills ion exchange column (4), calcium and magnesium ions are removed, and at the outlet of the column softened water is obtained. Dosing pump (6) transfers this water to the electrolyser where it is mixed with sodium chloride solution transferred from tank (3) by means of another dosing pump (tank 3 contains saturated sodium chloride solution). Electrochemical reaction which results in conversion of sodium chloride into sodium hypochloride takes place in the electrolyser cell supplied by direct electric current from energetic assembly (35) of the Hlorogen device. hypochloride solution is stored in the tank (2).

7. BASIC OPERATION Hydrogen generated by conversion reaction is let into atmosphere by means of ventilating system (28). Optimal hypochloride production is achieved using system automatic management (36). Sodium hypochloride solution is injected by dosing membrane pumps (38) into pipeline with water to be disinfected. Residual chlorine analyzer connected into regulation circuit with a dosing pump keeps the concentration of residual chlorine in the water on the predetermined level. This provides continuous production of disinfecting agent, automatic process control and automatic dosing and residual chlorine control. Full system operation can be monitored by PC (37).

8. COMPONENTS

9. HYDRAULIC BOARD

10. ELECTROLYSER • Module type with 8 cells connected in series. Each electrolytic cell consists of 2 cathodes and 1 titanium anode. The anodes are activated by precious metals oxides. They have high ion selectivity and anticorrosive stability. • Capacity varies from 1,2 kg to 24 kg chlorine per day. • Input solution:3% NaCl • Chlorine concentration in output solution: 10-14 g/l

11. ELECTROLYSER ELECTROLYSER WITH CAPACITY OF 24 kg EQUIVALENT CHLORINE A DAY ELECTROLYSER WITH CAPACITY OF 1,2 kg EQUIVALENT CHLORINE A DAY

12. SODIUM HYPOCHLORIDE TANK

13. SALT TANK

14. SOFTENED WATER TANK

15. WATER SOFTENER

16. SIGMA PUMPS FOR HLOROGEN Pump for saturated brine solution HOUSING PUMP HEAD HEAD PAD OUTLET VALVE INLET VALVE MAGNET BODY COIL BODY SMALL PTFE DIAPHRAGM BUTTON REJECTOR PRESSURE PLATE FOLIE AXLE BEARING SPRING BUTTON GASKET SPRING BUTTON SPRING SWITCH PLC SWITCH 220 V PLUG 220V CONTROL UNIT Pump for softened water HOUSING PUMP HEAD HEAD PAD OUTLET VALVE INLET VALVE MAGNET BODY COIL BODY SMALL PTFE DIAPHRAGM BUTTON REJECTOR PRESSURE PLATE FOLIE AXLE BEARING SPRING BUTTON GASKET SPRING BUTTON SPRING SWITCH PLC SWITCH 220 V PLUG 220V CONTROL UNIT

17. POWER CABINET Power cabinet elements, Front view Power cabinet elements, Rear view

18. HLOROGEN PROCESSOR • Processor unit manages and controls production process of sodium hypochloride, providing inter communication with other regulation units and PC unit. • Letter and numerical display indication of operating stages, values of measured parameters and existence of active alarm situations are also handled by the processor. • Communication with PC obtains closed control system for the hypochlorite production process. Processor unit includes specialized software for technological process observation. Sending of daily and alarm reports to remote control point is obtained by Internet connection.

19. PROCESSOR WITH MEASURMENTINSTRUMENTS AND PC MONITOR

20. OPERATION CYCLES • Electrolysis operation cycle of the Hlorogen device is when the electrolyser, all pumps and electromagnetic valves are in operation. This cycle lasts until the upper level of hypochlorite is reached in the hypochlorite tank. • Maintenace operating cycle is when upper level of hypochlorite is reached in the reception tank, causing stop of electrolyser, feeding pumps and adequate valves operation. Operation is stopped until the lower level of hypochlorite in the reception tank is reached, and that causes restart of production process - electrolysis. • Regeneration and flushing cycle of ion exchange unit begins after hours of electrolysis / production operation which is automatically stopped and regeneration and flushing process of ion exchange unit takes place lasting a few minutes (depending on column capacity). After the process of regeneration and flushing, the system automatically switches to production cycle i.e. electrolysis.

21. A D S P 11 / 22A D S R 11 / 22 AUTOMATIC DOSING SYSTEMS

22. WHY ADS? • After long years of quality and problem analysis of drinking water disinfection – chlorination, where man determined and manually controlled chlorine residual in the water, a conclusion has been made that this way of disinfection does not provide constant water quality, i.e. the residual chlorine varies as varies a man’s error. • We found out that human factor seriously influences quality and rhythm of chlorination which cannot be proved unless it leads to outrage. So we have been developing the automatic dosing system with automatic regulation within the admissible ranges and storing of all data and chlorination values for a long time. • To solve this problem we developed an Automatic Dosing System ADS, that completely satisfies all requirements for high – quality and reliable drinking water chlorination in all types of aqueducts.

23. CHLORINATION CONTROLLED BY WATER FLOW • Chlorination controlled by the water flow is used when inlet water biochemical characteristics are stable and only the water flow is changing in the time. Usually it is used for “Basic chlorination” when raw water comes from different water sources and springs and production is sometimes lower, sometimes higher in accordance with needs. When chlorine quantity necessary to achieve certain residual for a unit of water is clear, then chlorine dosage is increased or decreased proportionally according to the water flow change. • Basic chlorination – we assume that water is “raw” and a definite dosage of chlorine will certainly be used for the biochemical process in that water. The dosage of chlorine is called “chlorine need” or “chlorine number”. It is the quantity (mg/l) which will be certainly used, and the residual is measured and registered as uncombined chlorine.

24. CHLORINATION CONTROLLED BY RESIDUAL • Chlorination controlled by the residual chlorine is used when raw water flow fluctuations are not too big and when these changes are linear and that way only the quality (biochemical characteristic of water) is changed. Usually it is used for “Corrective chlorination”, when raw water comes from an aqueduct prepared and partially treated with chlorine. In small systems this type of chlorination is used as a basic and only type of chlorination. • Corrective chlorination – in general chlorine treated water has a variable biochemical composition, so sometimes a bigger quantity of chlorine is used for water primary disinfection and sometimes – less. The residual chlorine is kept at the specified level by corrective chlorination system. Corrective chlorination means that water has already been chlorine treated by basic chlorination system and according to its biochemical composition it is necessary to add a definite quantity of chlorine so that residual values are at a level defined by the Law.

25. OPERATION PROCESS • Automatic dosing system defines and doses sodium hypocholide in the water-supply system automatically according to the present flow (ADSP) or the residual (ADSR). Sodium hypochloride is transported by pipes from the tank to the suction inlet of the automatic dosing system. Sodium hypochloride is led to the diffuser under pressure and is sprayed into the water-conduit with the raw water. • The equipment consists of operating and spare (reserve) pump system. The spare pump system is put into operation when operating pumps are damaged, so chlorine dosage continues until operating pump system is repaired.

26. BASIC OPERATION ADSR 11 • AUTOMATIC DOSING SYSTEM • RESIDUAL CHLORINE ANALYSER • SODIUM HYPOCHLORIDE TANK • POWER ENCLOSURE • HYPOCHLORITE OUTLET • WATER PIPE

27. BASIC OPERATION ADSP 11 • AUTOMATIC DOSING SYSTEM • RESIDUAL CHLORINE ANALYSER • SODIUM HYPOCHLORIDE TANK • POWER ENCLOSURE • HYPOCHLORITE OUTLET • WATER PIPE

28. BASIC OPERATION ADSR 22 • AUTOMATIC DOSING SYSTEM • RESIDUAL CHLORINE ANALYSER • SODIUM HYPOCHLORIDE TANK • POWER ENCLOSURE • HYPOCHLORITE OUTLET • WATER PIPE

29. BASIC OPERATION ADSP22 • AUTOMATIC DOSING SYSTEM • RESIDUAL CHLORINE ANALYSER • SODIUM HYPOCHLORIDE TANK • POWER ENCLOSURE • HYPOCHLORITE OUTLET • WATER PIPE

30. HYDRAULIC BOARD ADSR 11 COMPONENTS

31. HYDRAULIC BOARD ADSP 22 COMPONENTS

32. SYSTEM COMPONENTSRESIDUAL CHLORINE ANALYZERWITH ECL

33. SYSTEM COMPONENTSFLOW METER

34. SYSTEM COMPONENTSSIGMA LOGIC MTM DOSING PUMPS HOUSING PUMP HEAD HEAD PAD OUTLET VALVE INLET VALVE MAGNET BODY COIL BODY SMALL PTFE DIAPHRAGM BUTTON REJECTOR PRESSURE PLATE FOLIE AXLE BEARING SPRING BUTTON GASKET SPRING BUTTON SPRING SWITCH PLC SWITCH 220 V PLUG 220V CONTROL UNIT • Dosing pumps purpose is to dose disinfecting solution in water at the appropriate place. The place is chosen to provide the best mixture, i.e. homogeneity of disinfecting solution and water. • Type: Membrane electromagnetic • Material: Small Teflon membrane; valve and head of polyethylene, aluminum housing. • * Capacity:0-15 l/h (at 5 bar) • * Power:40 W (0,04 kw)

35. SYSTEM COMPONENTSSIGMA LOGIC VTM DOSING PUMPS HOUSING PUMP HEAD HEAD PAD OUTLET VALVE INLET VALVE MAGNET BODY COIL BODY SMALL PTFE DIAPHRAGM BUTTON REJECTOR PRESSURE PLATE FOLIE AXLE BEARING SPRING BUTTON GASKET SPRING BUTTON SPRING SWITCH PLC SWITCH 220 V PLUG 220V CONTROL UNIT • Dosing pumps purpose is to dose disinfecting solution in water at the appropriate place. The place is chosen to provide the best mixture, i.e. homogeneity of disinfecting solution and water. • Type: Membrane electromagnetic • Material: Big Teflon membrane; valve and head of polyethylene, aluminum housing. • * Capacity:0-30 l/h (at 2.5 bar) • * Power:40 W (0,04 kw)

36. SYSTEM COMPONENTSCONTROL PC

37. TMK LTD. 45 DimitarNaumov Str., Stara Zagora, Bulgaria, tel./fax: +359 42 981 340, GSM: +359 886 738 637, +359 888 398 423 E-mail: office@hlorogen-bg.com, hlorogen@tmkbg.eu, www.hlorogen-bg.com