由于目前世界各国用水量急剧增加，同时各种环保法规相继制定，人们对用水质量要求日益严格，国内各类硫酸亚铁等净水剂的发展也在逐步加快。

净水剂即水处理剂，是工业用水、生活用水、废水处理过程中必需的化学药剂。通过使用这些化学药剂，可使水达到一定的质量要求。净水剂主要用来控制水垢和污泥的形成、减少泡沫、减少与水接触的材料腐蚀、除去水中的悬浮固体和有毒物质、除臭脱色、软化水质等。近年来，国内不仅涌现出絮凝剂、缓蚀剂、阻垢剂、杀生剂、分散剂、清洗剂、预膜剂、消泡剂、脱色剂、螯合剂、除氧剂及离子交换树脂等各种净水剂产品，还研发出了各种新型生物化学试剂和各种物理水处理材料。

长沙锐启化工生产的优质一水硫酸亚铁就是比较经济有效的水处理剂，欢迎世界各地客户前来咨询。

In September, it is the right time for apple to do autumn fertilization. To win the next fruit harvest, farmers usually value the autumn fertilization mostly. There’re many kinds of Autumn fertilizers as farmyard manure, zinc sulfate inorganic fertilizer, green manure and other livestock barnyard manure.

Zinc deficiency is the mainly reason for lobular disease:
1, the poor orchard soil is too permeable that zinc salt easily permeates away.
2, in salty field with high PH, zinc are easy to be fixed, but it’s difficult to be absorbed by the root.
3, too sticky soil would make roots growth badly thus lobular disease occurs more easily.

Methods of prevention and treatment:
Firstly, increase the organic content. With PH value increased, zinc salt solubility in the soil can accordingly increased which make fruit trees absorption easier.
Secondly, increasing zinc fertilizer application. Fertilize zinc sulfate 0.1 ~ 0.15kg on each apple tree for three years. Generally, it would work from the second year

Farm sea-fish need natural sea water or salt brine. In inland areas, farmers can concoct artificial sea water. In the process, many salts as Sodium chloride, manganese sulfate monohydrate, zinc sulfate monohydrate certainly would be added in.

To avoid the fish loss appetite or appear other problems, salting water process cannot be too hurry. Salt work generally begins in August. The salinity of the fish pond should reach 2.4% in November after salinity increase every five days.

Artificial seawater formula (for each ton of water): salt 2500g, calcium chloride 1250g, magnesium sulfate 7500g, potassium chloride 500g, boric acid 300g, sodium bicarbonate 175g, manganese sulfate 3.5g, strontium chloride 18g, sodium dihydrogen phosphate 3.5g, lithium chloride 1g, manganese molybdate 1g, sodium thiosulfate 1g, potassium bromide 24.25 g, aluminum sulfate 0.75 g, potassium iodide 0.075 g~ 0.25 g, copper sulfate 0.1 g.

Notes need your attention: 1, the dissolved oxygen in water should be sustained above 5 mg/l. 2, keep water fresh and take water quality changes in observation. 3, In case of leakage of fish pond and rain pouring, please continue to add manganese sulfate monohydrate and other salts to make enough water salinity.

Ferrous sulfate heptahydrate is the most popular iron fertilizer in rice planting, which can promote rice growing and improve growing conditions for crops. Some customers often call us to ask about the ferrous sulfate application methods in his practical operations? Now, Rech Chemical Co. Ltd shares our application method for you as follows:

Solution 1: For each 1/15 acre, mix ferrous sulfate 2-3 kg with 20 kilograms of water. Then the dissolved mixture could be ready for fertilization. To get better effectiveness, usually add ethylenediamine tetraacetic acid (EDTA) 0.5 kg in it. If used as base fertilizer, dilute 200 times of the solution; if used as foliar fertilizer, diluter 800 times the solution.

Solution 2: when used in seedling cultivation, it’s suggested to apply iron fertilizer more frequent, 3 kilograms for each 1/15 acre, at least 10 days a time.

Here’re reminds for user: Because ferrous ions in ferrous sulfate heptahydrate is easy to be oxidized into ferric iron ion, you should not only pay attention to the products’ effective content, but also see if it’s out-of-date when buying this product. Any information or helps you need, please feel free to consult our technical team.