E very human habitation howsoever big or small inevitably generates liquid waste. This may be in the form of domestic waste water, commercial waste water or industrial waste water. Among these, in rural areas, domestic wastewater is the largest contributor of waste water. Consequences of careless & indiscriminate disposal of such waste water are not only serious but sometimes disastrous too. Hence it is the need of the hour to take up Liquid Waste Management by all those concerned.
Government of India’s ambitious flagship program- The Swachh Bharat Mission (Gramin) (SBM-G) envisages a picture of clean India. If this is to be achieved, it becomes imperative to go beyond construction of toilets and address Solid & Liquid Wastes management. This has been rightly emphasized in SBM (G) & SLWM is now regarded as essential for the sustenance of ODF in GPs.
Attempts at improvements in Solid & Liquid Waste management have largely seen greater attention to solid waste as significant quantities of solid wastes are generated and it’s wide spread prevalence in most GPs. However, it is necessary to accord adequate and equal attention to liquid waste, if the goals of SBM of a clean village are to be achieved.
Factors such as technical, , socio-economic, geotechnical, managerial and financial influence the management of SLWM. Amongst these factors, technical issues, especially household and decentralized options have received very less attention. As household and decentralized technical options are cost effective and easy to manage this manual focuses on such technical options for liquid waste management, wherever possible, and on village level interventions in other cases.
It is hoped that this manual will provide guidance to all those concerned with planning and implementation of liquid waste management.