Desalination
In the current situation of fresh water scarcity, the filtration of seawater to freshwater is essential, especially in such harsh places on oil rigs, long journey ship, the outlying islands. So what method to filter seawater into freshwater? What to do maintenance of these seawater distillers? What service does Origin Pipe have for sea distillation ?
First, to process seawater into freshwater, there are three main methods commonly used as follows:
- Using seawater distillers: seawater is heated to temperatures of 50 to 60oC and will evaporate in a vacuum pressure environment. Then the water vapor will be cool to condense into purified water using and the salt and impurities will be removed. The advantage of this method is that the water distiller occupied less space and low maintenance costs. And this method is suitable for drilling rigs, long journey ship.
- Using RO filter: seawater through the RO filter system, salt and impurities will be trapped and finally the seawater will go through the sliver Nano-filter membrane to pH and bacterial to produce purified water can use pure can used always. The advantage of this method is the low investment cost and a large amount of fresh water suitable for outlying islands or aquatic processing vessels requiring big quantity of water, but the cost of maintenance, replace new RO filter membranes is very high
- Using of ion exchange: People will produce ion exchange resin panels, the positive ion exchange resin called Cation and negative ion exchange resin called Anion. When seawater passes through these plastics, Na + ions will hold back and push into water is H + ion, Cl- ions will be retained Anion plate and pushed into water are OH-ions. The water out of the plastic tank has very small content of Na + and Cl- ions so the amount of NaCl salt is very small. The advantage of this method is that the investment cost is quite low, but the filtered water has not reached the maximum purity efficiency.
So, there are two main types of repair and maintenance for seawater distillers, which are for troubleshooting problems during seawater distillation, such as the efficiency of freshwater production is not as high as the original design, or the salt deposit. Check, replace parts base on the operating hours for the systems: pump spray chemical against salt deposits, gasket, salinity sensors, the plate of heat exchangers ...
Heating for distiller
Our Origin Pipe Company with of well-trained engineers on Diesel engine, ships as well as heat transfer, has repair and maintenance services for seawater distillers of ALFA LAVAL, GEA, WARTSILA., etc. Beside, we also supply the spare parts of this distiller with the most reasonable price but guarantee the absolute quality of the product.