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Ag-S - Silver Ion Steriliser
For fresh water disinfection General Sterilizing drinking water with silver is a very old method and has been adopted frequently in many parts of the world. As a matter of fact, this method goes back to antiquity. Disinfection of water by dosing silver ions into water is completely harmless to human as well as animals. The amount of silver ions in the disinfected water is well below the maximum amount stated e.g. in the directives issued by the WHO. Silver ions do not change the taste, smell or colour of the water. Nor do they effect the physical and chemical properties of the water. The silver ions only kill off bacteria, germs, algae etc. More information
JOWA Ag-S is well-known to the shipping industry. Many thousands of ships have had it installed onboard since its introduction in 1970. Due to its simple design and high quality, the first installed units are still in operation, only periodical replacement of the electrode is needed. The JOWA Ag-S comes as one unit ready to be fitted onto the bulkhead. It consists of an electronic cabinet, an electrode chamber with two shut-off valves, a flow setting valve and a pressure gauge. All these parts are mounted on a common electropolished stainless steel base plate. A flow switch is also installed. Main Features
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UV Steriliser
Clean fresh water General It is equipped with low pressure UV-lamps, powered by electronic high frequency ballasts, for highest efficiency and lowest power consumption. More information
The sterilization process is microprocessor-controlled via data from the UV-sensor. The intelligent lamp monitoring system will, in case of any lamp failure, inform the user of this occurrence as well as the location of the broken lamp.
The hour meter tells the user to change lamps when the limit of its using time is reached. All necessary data is available in a display window on the control cabinet. Flow capacity Maximum flow at different water qualities (m³/h). Normally the Max/Min capacity of a UV-unit is chosen between T50=90% down to T50=60%. 
Technical data
Main Features
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Chlorination units for fresh water
Easy Installation and Operation General The dosing/chlorinating unit is meant to dose a chemical into water. The chemicals can be chlorine for fresh water systems, corrosion inhibitors for main engine cooling water, pH adjustment of fresh water etc. The unit consists of a dosing pump, a control cabinet, an injection valve and a container for the chemical. The container is equipped with a low-level alarm which stops the pump in case chemical runs out, a suction valve and a manual agitator. All components are mounted on a stable steel frame for easy installation. More information
Easy Installation and Operation
General The dosing/chlorinating unit is meant to dose a chemical into water. The chemicals can be chlorine for fresh water systems, corrosion inhibitors for main engine cooling water, pH adjustment of fresh water etc. The unit consists of a dosing pump, a control cabinet, an injection valve and a container for the chemical. The container is equipped with a low-level alarm which stops the pump in case chemical runs out, a suction valve and a manual agitator. All components are mounted on a stable steel frame for easy installation. The most common application is that the dosing unit is being used to prechlorinate or pH-adjust fresh water, prechlorinate evaporated water or bunker water, on its way to fresh water holding tank, and to rechlorinate water before it is distributed. The prechlorination systems are normally controlled by flow meters in bunker water flow line and evaporated water flow line respectively. This ensures enough chlorine dosed into the actual water flow in the water line proportionately. Main Features
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Fresh Water Filter
Filters for various water treatments JOWA F/2 Rehardening/pH-adjusting filter for potable water systems equipped with fresh water generators. JOWA F/R Sand filter to remove solid particles in most water systems. JOWA F/L Dechlorination/activated carbon filter for improvement of taste and smell in fresh water system. More information
Material
Specifications: 
Smaller or larger capacity filters are custom made upon request. |
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Hydrophore & Calorifier
Efficient and Durable General JOWA produces a wide variety of hydrophore or pressure boosting units for ship and offshore use. Pressure vessels, circulation pumps and other equipment can be provided separately or as complete, ready-mounted units with pump, control cabinet piping and valves. The tanks are made of stainless steel 316L. More information
JOWA Calorifiers are among the most efficient and durable on the market, with customers spreading throughout Europe and Asia. The equipment can be adopted to suit different needs of customers. A variety of standard sizes from 100L to 3000L are available. Our products come ready-connected with control cabinet, heating elements and thermostats. Alternative heating sources and circulation or pressure boosting pumps can also be provided. Main Features
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FWU - Fresh Water Unit
Custom-made unit General JOWA Fresh Water Units are specially designed for the offshore and marine market. More information
They consist of all necessary equipment for fresh and hot water supply, such as:
Before our production starts customer will get complete drawings of the unit with locations and dimensions of all connections. All equipment is mounted on a common frame with all internal piping and electrical work completed. Each unit, before leaving our workshop, will pass a quality-test of all functions. The unit is also beeing pressure tested. The only thing left for the customer to do before using the equipment is to connect water inlet and outlets and electrical power supply. Quick and easy installation onboard. All equipment enjoys the highest quality. Our calorifiers and hydrophores are made of stainless steel 316L. Pumps are selected from well known brands of the worldwide market. Sterilizers, filters, calorifiers and hydrophores are our own products and design so that spare parts are easily available from anyone of our offices or representatives worldwide. Main Features
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STP 2010
- JOWA Sewage Treatment Plant General The JOWA STP 2010 series Sewage Treatment plants are approved for operation onboard ships in accordance with IMO MEPC.159(55) and meet all the requirements in Marpol 73/78 annex IV. The unit runs automatically with no operator attendance. It can be fed by gravity or a fully integrated vacuum unit can be fitted as an option. The unit’s bioreactor ensures optimum biological treatment with no offensive odours produced. More information
System Description
The JOWA STP 2010 is a submerged fixed-film unit with a dedicated aeration system that provides major advantages for the operator. The bioreactor contains a highly efficient, cross-flow structured matrix on which a stable biomass adheres and rapidly grows. Utilises natural biological processes and intelligent design to ensure the strict discharge limits are met without the need for filters. In the clean water tank chlorine is used to disinfect the treated waters. A non-toxic de-chlorination chemical ensures the discharge meets stringent quality standards. The unit is very compact. In addition, the stable biomass tolerates hydraulic and organic shock loadings better than the alternatives. Low flows and loadings can also be accepted for extended periods. JOWA’s extensive experience in shipboard sewage treatment gives the operator a sewage plant that is inexpensive to run, reliable and easy to maintain. Ultimately the ocean environment is the winner. The JOWA STP 2010 Sewage Treatment plants are available in a range of sizes from 15 – 60 persons. Sizes outside the range are available upon request. Capacity
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WWS - Window Washing System
Clean Windows General The system supplies wheelhouse with pressurised tempered water including cleaning detergent and rinsing fluid. The system is specially designed to suit the number of spraying nozzles, which is dependent on the size and design of the wheelhouses and yards, or owners request. The difference is that more nozzles per section need a higher pump capacity. More information
After use the water is removed from the pipe system by adding pressurised air.
The system is equipped with a PLC for fully automatic operation of the system controlled from the wheelhouse e.g. start or stop working on the chosen section. Anti-freezing liquid is optionally supplied. Main Features
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JOWA HOLLAND BV
Achterzeedijk 57 - Unit 64 2992 SB Barendrecht Telephone : +31(0)180 55 71 33 Fax : +31(0) 180 61 11 27 E-mail: post@jowa-holland.nl Sales: post@jowa-holland.nl Service department: service@jowa-holland.nl Financial Department: administration@jowa-holland.nl |
JOWA NORGE AS
Dyrmyrgata 35 NO-3611 Kongsberg NORWAY 
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