Report on Chemical treatment of lake

        There are several applications for the treatment of lake. It can be done by chemical applications, Alum applications, Sediment removal, pond dye applications, bacteria and enzyme applications, aeration installation, restoration of shore line, wildlife control, manual removal and education of surrounding community. The chemical applications of lake are good and necessary as it controls the species which are invasive. It is cost effective and immediate results are seen and provided by implying chemicals to untreated or contaminated lake. It should also be noted that over use of chemicals can be harmful to the environment. [1]

        In order to chemically treat the lake it is important to identify the problem and solution, choose the chemical, apply it and then finally monitor it. There are several algal and aquatic species which are different and resistant even to copper. After determining the problem the next step is to choose the kind of required chemical treatment as there are two types of chemicals i.e. systematic (2,4 D and Fluoride) and contact (Endothal and Diquat). The systematic chemicals have ability to provide preventive measures while contact treatment provides spot treatments and it is comparatively lower in cost.

There are few important points which should be considered in order to chemically treat a lake.

In order to control algal growth copper sulphate and other chemicals should be carefully sprayed as it is economical and very effective.

The chemicals are sprayed so the algal growth is inhibited and zooplankton survives.

When sprays are spayed to control the algal growth it also helps to control fish growth.

Rooted weeds of water should be cut through with the aid of weed cutting machine, arsenical compounds and cables.

It is observed that presence of several gases like nitrogen, carbon, oxygen, phosphorus are the growth factors of lake or water weed and algae scum. [2]

Chemical treatment of lake with restricted access

    If the lake is contaminated with phosphorus then the chemical method which should be used is capping and P-inactivation. It is effective, reduces pH and is accessible in areas with restricted access. Another technique which can be used in restricted access is the oxidation of sediment by injecting chemicals such as lime or iron or calcium nitrate. This method is expensive yet very effective. Toxicity in aquatic species is reduced and it is potentially more permanent in alum.

References of lake