Efficient sewage ammonia nitrogen removal agent

Abstract

The invention discloses an efficient sewage ammonia nitrogen removal agent which consists of the following components in parts by weight: 30-50 parts of magnesium salt, 20-45 parts of phosphate, 10-15parts of ferric sulfate, 10-20 parts of calcium carbonate, 5-10 parts of modified bentonite, 10-20 parts of modified coal ash, 5-15 parts of modified zeolite, 2-10 parts of an attapulgite compound adsorbent, 20-30 parts of sodium hypochlorite and 5-12 parts of a coagulant aid. The efficient sewage ammonia nitrogen removal agent has the beneficial effects that metallic salts, phosphate and ammonium ions form precipitate in water, effective adsorption and ion exchange of ammonia nitrogen in the water can be carried out through the modified bentonite, the modified coal ash, the modified zeoliteand the attapulgite compound adsorbent, ammonia in the water can be converted into nitrogen which is removed later through the sodium hypochlorite, the pH value of sewage can be adjusted by the calcium carbonate, the flocculation effect of the precipitate can be improved by the coagulant aid, precipitate sedimentation and separation can be promoted, and the agent is applicable to wide pH value ranges, has a good treatment effect on low-concentration ammonia nitrogen wwaste3water, and is environmental-friendly.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to an efficient sewage ammonia nitrogen remover. Background technique [0002] Recently, the massive discharge of ammonia nitrogen wastewater has attracted the attention of the environmental protection field and the whole world. Especially the discharge of high concentration ammonia nitrogen needs to be paid attention to. The discharge of ammonia nitrogen wastewater into water bodies, especially lakes and bays with slow flow, is easy to cause algae and other microorganisms in the water. Eutrophication refers to the enrichment of nutrient elements such as nitrogen and phosphorus in lakes, reservoirs and bays and other closed and semi-closed water bodies and some stagnant river water bodies, resulting in certain characteristic algae (such as Blue-green algae) and other aquatic plants reproduce abnormally, heterotrophic microorganisms metabolize frequently, water transparency decreases, ...

AI Technical Summary

Problems solved by technology

[0003] At present, the treatment methods for ammonia nitrogen wastewater mainly include break point chlorination method, ion exchange method, membrane separation method, biological denitrification, stripping method, wet catalytic oxidation method, chemical precipitation method, etc. Among the above methods for removing ammonia nitrogen, Breakpoint chlorination, ion exchange, membrane separation, and biological denitrification are suitable for treating low-concentration ammonia-nitrogen wastewater, but are not effective for high-concentration ammonia-nitrogen wastewater. Among them, biological denitrification is the most widely used, stripping method, wet catalysis The oxidation method has strict requirements on the operation process, and the stripping method blows ammonia into the atmosphere, causing secondary pollution. The catalyst of the wet catalytic oxidation method is expensive, and the chemical precipitation method can fix the ammonia and phosphorus in the wastewater in the form of sediment. , and the sediment can be used as fertilizer, but it may introduce new pollutant phosphorus. At present, there are few types of removers used to treat sewage ammonia nitrogen in the market, and the scope of application is narrow. There are certain requirements, there are many restrictions on use, and the effect is not ideal