Ammonia nitrogen refers to nitrogen in the form of free ammonia (NH₃) and ammonium ions (NH₄⁺) in water. The hazards of ammonia nitrogen in water are mainly reflected in the following aspects:

I. Hazards to aquatic organisms

1. Toxicity

For fish, ammonia nitrogen is highly toxic.

2. Impact on growth and reproduction

Long-term exposure to aquatic environments with high ammonia nitrogen content will inhibit the growth of aquatic organisms.

II. Hazards to the water environment

1. Deterioration of water quality

Ammonia nitrogen is a nutrient in water bodies. When the concentration of ammonia nitrogen is too high, it will cause eutrophication of water bodies. Under suitable temperature, light and other conditions, algae and other plankton in water will multiply in large numbers.

2. Ecosystem destruction

Excessive ammonia nitrogen in water bodies will cause changes in the structure of aquatic biological communities.

3. Hazards to human health

1. Drinking water safety risk

If the ammonia nitrogen in drinking water exceeds the standard, after the human body ingests it, the ammonia nitrogen will be converted into nitrite in the body (excessive intake will cause blue baby syndrome).

2. Indirect harm through the food chain

When the ammonia nitrogen in the water exceeds the standard and causes aquatic organisms to be polluted, these polluted aquatic organisms enter the food chain.

Bestion brand AR998 resin can be used to treat a variety of ammonia nitrogen-containing wastewaters, especially for wastewater with low concentration and large discharge volume and containing toxic metals. For example, when treating mercury-containing wastewater, it can be combined with sodium sulfide alum chemical coagulation precipitation as secondary treatment to make low-concentration mercury-containing wastewater meet the discharge standard.