Present situation：

Treating water using chlorine agent is irritable to skin, eyes and throat. The interaction between organic compounds and chlorine will form odorous compounds and carcinogens, thus this will threat sustainable development. New technology 　　Scientists keep searching for substitutes for chlorine. After several decades of unremitting efforts, important suggestions and contribution have been made out. Killing bacteria and algae using a few of ozone and heavy metal ions ought to be the best one. Ion biocide equipment has several advantages like small volume, low investment, simple operation and good effect and ion biocide has friendly to environment, no impact on human health. Lakes, ponds, industrial cooling water, swimming pools, landscape water, recreation pools, farming water and drinking water in Europe and the United States have extensively put it into applications. The company is developing some new products, which will be dedicated to the general users.

Ion water cleaning devices：

It consists of metal alloy electrode and control box. Water flows through the DC apparatus will generate ions. Silver, copper ions will attack bacteria and algae cells, and then destroy their growth metabolism to achieve water purification purpose. Water treatment process and ion device are showed in Figure 1 Figure 2. 　　0.5-1ppm copper ions in water can meet the requirement of killing algae and bacteria. Purifying water utilizing ion is harmless to the human body and friendly to environment. At started in United States use ions to disinfect the capsule drinking water, which landed on the moon in 1969. It is widely used in industrial cooling water, swimming pool water, landscape water, farming water, drinking water and other occasions. 　　The device that treats water using ion have the advantages like small volume, low investment, easy operation, low daily costs, harmless, so-called green water treatment technology.      　　“Shuiqingling” is an organic copper complex, comparing with commonly used copper sulfate, and it is stable (pH>10), not precipitation, not biodegradable, and hydrophilic advantage. “Shuiqingling” is blue water (see in figure 3), with specific density about1.2, and contains 9-10% (wt) biological activity copper. The requirement is very low, usually 0.4-1ppm. That is put 0.4-1 gram into one cubic meters water, using in ponds, lakes, rivers, farms and other water treatment. 　　The chemical is easy to use, not harmful to people, friendly to the environment, and fish and planktons in water are not affected. It is an ideal water treatment agent .