Most of the phosphorus in the water comes from domestic sewage, factory and animal husbandry wastewater, mountain forest fertilizer loss, and rainfall and snowfall. The phosphorus content in rain and snow is lower. It is understood that there are surveys that show that the average phosphorus concentration in rainfall is less than 0.04mg/L, and that in snowfall is less than 0.02mg/L. Taking domestic sewage as an example, each person’s daily phosphorus emissions are about 1.4-3.2g, and the contribution of various detergents accounts for about 70% of them. In addition, there is also a lot of phosphorus in cooking and washing water and feces. In addition, phosphorus emissions from related factories are mainly from fertilizer, medicine, metal surface treatment, fiber dyeing fermentation and food industry.

So why monitor phosphorus in water? Its main is to judge the safety of water quality through online monitoring of water quality. Otherwise, there will be some harm.

What are the Hazards of Wastewater Containing Phosphorus?

· Phosphorus is a key nutrient that causes water eutrophication. Eutrophication will not only lead to the growth of algae in water, but also make the oxygen content of water drop sharply, affecting the survival of aquatic organisms such as fish.

· Eutrophication of water body is manifested as “bloom” in lakes and reservoirs. The main hazards are the decrease of water transparency, the weakening of reoxygenation capacity, the reduction of fish types, especially those with economic value, and the consumption of dissolved oxygen by decomposition after the death of algae. A lack of dissolved oxygen and certain toxic algae can also kill fish. Organic matter that cannot be decomposed will sink to the bottom, causing the lake and reservoir to become increasingly silted and shallow, accelerating the aging of the lake. Eutrophication of urban lakes and reservoirs is common and the situation is quite serious. The pollution of three famous lakes, Dianchi Lake, Chaohu Lake and Taihu Lake, is particularly noticeable;

· Water eutrophication is manifested as “red tide” in the ocean, that is, abnormal water color and deterioration of water quality caused by the reproduction of some plankton in the water. A certain kind or several kinds of plankton in the ocean in a certain environmental conditions of explosive reproduction or high concentration, causing sea water discoloration, affecting and endangering the normal survival of other Marine organisms, resulting in disastrous Marine ecological anomalies.

Hangzhou Modi-Tech is a water quality online monitoring instrument manufacturers, the main products are: biological toxicity online analyzer, Escherichia coli online analyzer, water heavy metal online analyzer, total phosphorus online analyzer and so on.