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CO TA NER


CONTAIINERS, TANKTANKS & VESSELSELS


FEA


FEAT


ATURE


Chart 1


Landia Chopper Pump and still the best for


Landia Chopper Pump – the original


and still the best for Chart 2


Chart 1: Sinner circle for a typical spray ball Chart 2: Sinner circle for a t


t 1: Sinner circle for a t pical spray ball t 2: Sinner circle for a typical rotary jet cleaner y jet cleaner


pressuremakes perfe ct sense froma sustainability perspective. As the mechanical action component is so much higher in these machines, chemical action, heat and time can all be reduced.


Heat–When changing to impact cleaning it’s unlikely that the


heat, reducing the energy fluid wil l be required to ac temperature of the variou


s wash stages will be reduced. But, because less hie ve the same cleaning there is simply less to costs of heating.


Chemical action –The percentagemix of caustics in the fluid will probably rema in constant but as less fl uid is us ed overall the amount of chemicals used is far lower. Froma sustainability perspective th ismeans lower water treatment costs and lower chemic al production costs. Time –Another benefit of rotary jet impact cleaners is that they often have faster cleaning time, resulting inmore production time compared to other tank clea ning devices.


Estimating the car bon foot print savings achiev ed bymoving from less efficientmethods of tank cleaning tomoremode rn ones is quite difficult. An approximation of the levels of saving can bemade if we use overall cost as proxymeasure for environmental impact. Whilst not perfect in the case of tank cleaning it’s generally true that if one redu ces cost then sustainability will be increased.


Firstly, t he overall water consumption needs to be calculated for each stage of the clean. Any chemica ls used in the caust ic stages need to be costed in as well. The cost of heating the water also nee ds to be calculated. Th is is straightforward enough using the energy cost to the business in Kwhmultipli ed by the Kwh nee ded to raise the water to the desir ed temperature. This c an bemodifi ed downwards if heat recovered fromanoth er p art of the factory is used.


Next the cost of water treatment and disposal needs to be calculated and this will vary greatly dependi ng on the COD and BOD load of the waste water. This too can bemodified downwards if water recovery CIP systems are used.


The energy cost of pumping is unlikely to changemuchmoving from one clea ning system to another and is small compar ed to the cost of water, heating and treatment so can be ignored. When all this is added up together, we get an estimate of the cost of each cleaning cycle. This cost is a reasonable proxymeasure for environment al impac t. Improving the water efficiency of tank cleaning operations can contribute towards an organisation achieving its sustainability targets. ozzles are still common ly used, so there is a neers tomeet those targets. Also, the cost of aid back andmeeting the sustainability targets ring holders happy – a win, win situation.


can also keep the purse st swapping can be quickly p great opportuni ty for engi Spray balls and spinning n


The Spray Nozzle People www.


www. ww spraypeoplegroup.om www.com www.spray-nozzle.co.uk tel. 01948 661 200 . %#& #')& ((&)"$')! ') & ((&)"$')! landia.co.uk


HARD TO HANDLE wastewater applications


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