COLOUR REMOVAL OF DISTILLERY EFFLUET BY PHYSICAL AND CHEMICAL TREATMENT AND EFFECT OF DISTILLERY EFFLUENT ON WHEAT CROP

摘要

The effluent discharged from distillery industries has extermely high amounts of organic matter with dark colour and foul odour.Untreated effluent pollutes water and land when discharged into water bodies and on land. Physico-chemical analysis (pH, CU, COD and BOD) of the effluent showed that most of the parameters beyond the permissible limit. Chemical treatment by KMnO_4, C_6H_(12)O_6, CaOCl_2, K_2Cr_2O_7 and CaCO_3 significantly reduce colour, COD and BOD in distillery effluent. Maximum reductionwas observed at application rate of 5 g/ltr. for colour (72.07%) COD (96.78%) and BOD (93.16%).Increase concentration of effluent in wheat is showed lower seed germination and decrease concentration of effluent in wheat exhibit maximum seed germination.Changes in shoot length, root length, total seeding fresh weight and total seeding dry weight of wheat were also observed with various concentration of effluent