Farmers produce clean salt


Mr. Cao, the famer producing salt in Cat Hai district was the first person applying clean salt filter model. This one costs only from 7 to 8 million VND and bring high profits . Salt through tank filter will have higher yields and reduce losses. It will help to shorten time to crystallize and collect salt as well as reduce labor intensity and  environmental pollution.

 

Mr. Cao said that his filter model was built for a year and has been producing more  salt with higher quality. In the past, there are about  2 tons of salt produced per month, however, it is currently increased to 4 tons of salt per month doubled capacity. This is a very simple model without environmental pollution and toxic chemicals.

The Filter can be built in all kind of areas where seawater can be concentrated and saline concentration of 20% with favourable conditions for drying areas

 

 

 

In traditional  way, seawater was flowed on three steps of sand terraces then the salt will be taken out for drying, but in this model, seawater will be filted before crystallization. However, in this model, seawater is flowed through a shower which will help to increase oxygen. Then it  is filtered by 30 cm of sand layer for taking out dust, microorganisms, alum. After that, seaweater  is detoxifed and deodorized by a charcoal layer. Manganese, Asen and other insoluble impurities in seawater are disposesed by Laterite layer under sand layer. In this layer, tubes with holes with the diameter of 48mm are placed to collect clean seawater. By this way, the dirt and harmful thing was fitered out seawater before making the salt. Crystallization salt is cleaner, whiter and more productive.

 

Although the filter is easy to build but it requires awarehouse  for salt storage. Mr. Cao also looks forward to have finacial supports from the authorities for applying this  model for local people who want to increase productivity and living standards. Above all others, there are  clean salt supplied to consumer.

 By Phuc Tran - ECC Haiphong


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The International Exposition on Technologies and Products for Energy saving and Environment protection in Hai Phong city in 2017(E&E Expo Hai Phong 2017) taking place from November 29th to December 2nd 2017 at Viet-Tiep Friendship Labor Cultural Palace, Lach Tray Ward, Ngo Quyen District, Hai Phong City.
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Energy Conservation and Cleaner Production Center of Hai Phong City
Add: No. 104 Nguyen Duc Canh - Hai Phong
Tel: (84) 313 7340488 * Fax: (84) 313 630 626
Email: ecc-hpc@haiphong.gov.vn
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