Journal - Changes in water quality of Simle Khola by discharging dairy effluent from Sitaram Gokul Milk Industry inside Kathmandu Valley

Changes in water quality of Simle Khola by discharging dairy effluent from Sitaram Gokul Milk Industry inside Kathmandu Valley

Susmita Dhakal

Central Department of Environmental Science, Tribhuvan University

Jour. Nepal Geol. Soc., Vol. 44, 2012, 77-82


Abstract

Dairy industries convert raw milk into safe products for human consumption. Cleaning of all pipelines, equipments, machines, Cans; startup, products change, overhead shutdown, pasteurizers and loss in filling operations contribute wastewater generation in dairy industry. So the composition of waste water involves a substantial concentration of fat, milk, protein, lactose, lactic acid, minerals, detergents and sanitizers. The prime objective of this study is to analyze effects of such effluent on stream water discharging directly into it. The study has conducted on a stream which has been receiving dairy effluent from Sita Ram Gokul Milk Industry for years. Water samples at 200 m upstream from discharge point, at discharge point and 200 m downstream were collected in July of 2005, 2007, 2009 and 2011 A.D. All water quality parameters were negatively affected due to discharge of effluent. DO has depleted severely from its original concentration of 6 mg/l to 1 mg/l. BOD values i.e. 214 mg/l to 220 mg/l have in far more elevated level than national standard. COD, Nitrates and phosphates concentration are also in elevated level.

Member Login
NEWS AND EVENTS
  • Sep
    01

    40th Annual General Meeting (AGM) of the Nepal Geological Society was held in SaSa Banquet and Event Management, Teku, Kathmandu on Bhadra 8, 2075 (September 24, 2018)

  • Jul
    08

    Academic and professional development Sub Committee of the Nepal Geological Society and Nepal Geological Students’ Society in collaboration with Central Department of Geology has organized a training and interaction program entitled “Mining and Engineering Geology in field” on 23rd  Asadh 2075 at the conference hall of the Central Department of Geology, Kirtipur.

Activities and Information

Activities of 17th and 18th Executive Committee
Nepal Geological Society
P.O.Box No. 231
Kathmandu, Nepal
FREEPHONE: +977-01-4437874
Email: info@ngs.org.np