Medhi U J, Talukdar A K, Deka S
Pub-Kamrup College, Baihata Chariali -781 381, India.
J Environ Biol. 2011 Mar;32(2):185-8.
The physico-chemical characteristics of paper mill industry effluent were measured and some were found to be above the permissible limits prescribed by Indian irrigation water standard. A study was conducted in pots to investigate the effects of different concentrations (10, 20, 30, 40, 50, 60, 70, 80 and 100%) of paper mill effluent on growth and production of rice, mustard and peafor three years. The study reveals that the paper mill effluent has deleterious effect on the growth of crop at higher concentrations. However, at lower concentration (viz. 10 to 40% in rice, 10 to 50% in mustard and 10 to 60% in pea) of effluent, beneficial impact on general welfare of the crops was noticed. Growth and development was increased with increasing the concentration of the effluent up to 30% in rice, 40% in mustard and 50% in pea. Investigation showed that the growth and production of rice, mustard and pea was found maximum at a concentration of 30, 40 and 50% effluent respectively.
对造纸厂工业废水的物理化学特性进行了测量，发现其中一些特性超出了印度灌溉用水标准规定的允许限值。在花盆中进行了一项为期三年的研究，以调查不同浓度（10%、20%、30%、40%、50%、60%、70%、80%和100%）的造纸厂废水对水稻、芥菜和豌豆生长及产量的影响。研究表明，造纸厂废水在高浓度时对作物生长有有害影响。然而，在较低浓度（水稻中为10%至40%，芥菜中为10%至50%，豌豆中为10%至60%）的废水情况下，可观察到对作物总体生长有益的影响。水稻中废水浓度提高到30%、芥菜中提高到40%、豌豆中提高到50%时，生长和发育有所增加。调查显示，水稻、芥菜和豌豆的生长及产量分别在废水浓度为30%、40%和50%时达到最大值。
