Experimental study on denitrification of monosodium glutamate wastewater by natural zeolite

natural zeolite;  adsorption;  regeneration;  Ammonia nitrogen;  MSG wastewater

Under static test conditions, the treatment effect of zeolite on wastewater with high ammonia nitrogen content monosodium glutamate was studied, and the effects of different zeolite particle size, zeolite dosage and regeneration methods on adsorption were investigated. The test shows that the smaller the particle size, the stronger the adsorption capacity; After oscillation for 5 h of 270 g zeolite with a particle size of 833~2μm, the removal rate of ammonia nitrogen in wastewater reached 67.1%.Through the dynamic adsorption test, compared with the penetration curve before and after zeolite regeneration, it was found that the adsorption capacity after zeolite regeneration was almost the same as before regeneration, and the effective life was 151 h, which was only 17 h shorter than the life before regeneration.This shows that zeolite is an ideal denitrification adsorbent.