Preparation method and application of material for adsorption removal of organic matter and ammonia nitrogen

Abstract

The invention discloses a preparation method of a material for adsorption removal of organic matter and ammonia nitrogen. The preparation method comprises the following steps that (1) clinoptilolite is selected from natural zeolite, cleaned and elutriated through distilled water for three times; (2) stirring is conducted for 30 min in a high-speed stirring machine, and then precipitation is conducted; (3) upper turbid liquid is removed through a sieve net of 100 meshes; (4) the cleaned clinoptilolite is dried for 24 h in a drying oven at 100 DEG C; (5) a material A is prepared; (6) a materialB is prepared; (7) a material C is prepared; (8) a material D is prepared; (9) a material E is prepared; (10) a material F is prepared; (11) a material G is prepared; (12) a material H is prepared; (13) a material I is prepared; (14) a material J is prepared; and (15) a final adsorption material K is prepared. The natural zeolite and coal ash which are low in cost and easy to obtain are taken as basic raw materials, the natural zeolite is modified by NaCl and then mixed with a 4A molecular sieve prepared from the coal ash according to a certain ratio, thus the novel adsorption material is obtained, and the material has a great organic matter and ammonia nitrogen adsorption effect.

Description

technical field [0001] The invention relates to a preparation method and application of a material for adsorbing and removing organic matter and ammonia nitrogen, and belongs to the technical field of sewage treatment. Background technique [0002] Water is a basic natural resource and a strategic economic resource. It occupies an important position in the national economy. High-quality clean water is the basis for human survival and development. Although my country has a large amount of water resources, the per capita water resources are equivalent to a quarter of the world's average level, and the water resources are seriously polluted, which puts forward urgent requirements for the control of water pollution and the improvement of water quality in our country. Therefore, how to reduce the concentration of ammonia nitrogen in non-drinking water sources in nature to the third type of surface water environmental standard, which is less than 1mg / l, is a current research hotsp...

AI Technical Summary

Problems solved by technology

Therefore, how to reduce the concentration of ammonia nitrogen in non-drinking water sources in nature to the third type of surface water environmental standard, which is less than 1mg / l, is a current research hotspot. The methods mainly include biological method, stripping method, chemical precipitation method, etc. Although the acidity and alkalinity and temperature of these water bodies can be changed, the operating cost is very high. The adsorption method uses the physical properties between nitrogen and materials with large specific surface area or chemical affinity to remove nitrogen by adsorption, which has the advantages of less land occupation, simple method, no secondary pollution, reusable, and low cost. At present, there is still a lack of efficient nitrogen removal adsorbents, especially suitable for large-scale Applied Adsorbent Materials for Adsorbing Ammonia Nitrogen

Images