Humic acid fertilizer environmental protection

Humus is a complex organic matter formed by animals and plants through long-term physical, chemical and biological actions. Water, sediment and soil all contain Humus and Humic acid raw powder
Genitalia is a macromolecular polymer with a complex chemical structure, containing active groups such as carboxyl, phenolic, and ketone groups. Its molecular weight ranges from 102 to 106. The composition of Humus varies with different sources. Humus can be divided into humic acid (HA), fulvic acid (FA) and humic acid according to its solubility in acid and alkali. The organic matter in natural drinking water, mainly HA, has a concentration range of 20% in groundwater μ The higher the content from g/L to 30 mg/L of surface water, the poorer the water quality and hygiene. The content of humic acid in general water sources is around 10 mg/L, accounting for 50% to 90% of the total organic matter in water. The presence of humic acid in natural drinking water sources has brought a series of impacts to humans, animals and plants:
(1) HA is a complexing agent for trace metal elements. The presence of humic acids can, on the one hand, reduce the content of metal ions and trace elements in water, reduce mineralization, and thus disrupt the human body's adsorption and balance of certain elements such as Ca, Mg, Mn, V, Mo, SO2-4, etc; On the other hand, it can affect the toxicity and bioavailability of metal ions.
(2) Humic acids in water bodies are important precursors of halogenated by-products. Humus is very easy to form disinfection by-products DBPs and Trihalomethane Carcinogen THMs during chlorination in water plants. It is reported that almost all Almost all natural organics may be chlorinated during disinfection, and humic acid, which accounts for about half of dissolved aquatic organics, is the most important precursor for THMs production. Research has shown that dissolved humic acids are the main precursors for the formation of MX (a highly mutagenic disinfection byproduct) in natural water bodies, and some phenolic, aldehyde, and aromatic acid compounds may play an important role in the formation of MX.
(3) Humic acid is one of the main environmental factors leading to Kashin-Beck disease. The drinking water for residents in Kashin-Beck disease endemic areas is often dark and humid cellar water, which cannot receive sufficient sunlight. The water has low levels of humic acid photolysis, resulting in a high content.
(4) The acidification of water body causes the change of Humus (HS) characteristics, thus affecting the environment. With the continuous deterioration of human living environment and the formation of acid rain, the pH in natural water bodies such as lakes has decreased. The organic nitrogen content of HS in the water body increases, the proportion of hydrophobic and hydrophilic substances decreases, the carbon content and carboxyl acidity decrease, the oxygen content and the acidity of phenols and aldehydes increase, which leads to the increase of fish toxicity and the Primary production of Phytoplankton, and the disappearance of some major Zooplankton species, the reduction of megaplants, and the increase of epiphytes in the treatment basin.