A view on controlling river pollution in Bangladesh
Tuesday, 13 April 2010
Ashiqur Rahman
Like many other developing countries, river pollution control in Bangladesh relies on expensive and somewhat outdated technological solutions . So far emphasis has been given either on treatment of pollutants through effluent treatment plants or augmentation of rivers to increase the flow through the construction of river water diversion structures. Even the relocation of the pollution causing agents may not capacitate a permanent solution to the problem unless the pollutants are controlled at their sources through adopting proactive approaches such as cleaner production, recycling and resource recovery mechanism.
Experiences in countries like the United States, Australia and China show that the proactive approaches are being implemented voluntarily by the polluters to reduce their pollutants once the 'market-based' mechanisms are introduced. In these systems polluters are not told how much they can pollute or what technology they must use, but their choices will have financial consequences and this will influence the choices they make. With these policies, emission constraints are not source-specific; rather they provide equal incentives to all polluters by increasing the marginal costs of pollution.
It is obvious that to protect our rivers from further pollution we need to look beyond the ineffective conventional policies and strategies. We need alternate, innovative and integrated approaches to be implemented to overcome this problem. In this regard, provisions of monetary incentives, rewards and recognitions for the polluters who reduce their pollution may work effectively for reducing the amounts of pollutants which are being discharged into the rivers. The direct involvement of community and civil society can also play a great role for this purpose.
The rivers of Bangladesh suffer from the pollution problem mostly during the dry season (November to April) but the assimilation and the dilution capacity of most of our rivers increase dramatically during the wet season (May to October). This phenomenon of the rivers overrules the application of a uniform acceptable level of the pollutants throughout the year. This opens the possibility for using 'non-uniform reduction' measures for the polluters and thus offers flexibility to them in terms of reducing their harmful pollutants for the water bodies.
Another significant issue is that different polluters have different levels of capacity to reduce their pollutants. Some are better off than others to control their pollutants. This tendency opens the opportunity for the application of a tradable permit system for water pollution control. This system allows pollution to be reduced wherever it is least costly to do so and a 'cap' guarantees the total allowable emissions are not exceeded. For instance, the Hunter River Salinity Trading Scheme of Australia leads the world in using such economic instruments for the effective protection of waterways.
Regular monitoring of river water quality (physical, chemical and biological composition) is an important aspect to control river pollution. However, this is an expensive and time consuming ongoing activity which might be difficult for any government agency like the Department of Environment alone to perform the task on a regular basis. Even the powerful agencies like the Environmental Protection Agency of the United States assign this task to the community with assistance from the local administration. In Bangladesh we may think of exploring this option to ease the monitoring activity of hundreds of rivers in our country.
As we would all agree the time has come to take actions to protect our rivers from further degradation and before nature takes revenge on us. However, the prerequisite of taking any action is that we need environmentally aware and enlightened people for the purpose. Awareness about the negative consequences of our harmful activities which ultimately affect our precious natural resources including rivers can minimize the damage caused to them in many folds. That is why it is high time to stress on environmental education from the primary to the tertiary level of studies in our country because learners of today are the leaders of tomorrow.
The writer, a senior lecturer of the North South University, is currently on a study leave to pursue PhD in environmental management at the University of Sydney, Australia
Like many other developing countries, river pollution control in Bangladesh relies on expensive and somewhat outdated technological solutions . So far emphasis has been given either on treatment of pollutants through effluent treatment plants or augmentation of rivers to increase the flow through the construction of river water diversion structures. Even the relocation of the pollution causing agents may not capacitate a permanent solution to the problem unless the pollutants are controlled at their sources through adopting proactive approaches such as cleaner production, recycling and resource recovery mechanism.
Experiences in countries like the United States, Australia and China show that the proactive approaches are being implemented voluntarily by the polluters to reduce their pollutants once the 'market-based' mechanisms are introduced. In these systems polluters are not told how much they can pollute or what technology they must use, but their choices will have financial consequences and this will influence the choices they make. With these policies, emission constraints are not source-specific; rather they provide equal incentives to all polluters by increasing the marginal costs of pollution.
It is obvious that to protect our rivers from further pollution we need to look beyond the ineffective conventional policies and strategies. We need alternate, innovative and integrated approaches to be implemented to overcome this problem. In this regard, provisions of monetary incentives, rewards and recognitions for the polluters who reduce their pollution may work effectively for reducing the amounts of pollutants which are being discharged into the rivers. The direct involvement of community and civil society can also play a great role for this purpose.
The rivers of Bangladesh suffer from the pollution problem mostly during the dry season (November to April) but the assimilation and the dilution capacity of most of our rivers increase dramatically during the wet season (May to October). This phenomenon of the rivers overrules the application of a uniform acceptable level of the pollutants throughout the year. This opens the possibility for using 'non-uniform reduction' measures for the polluters and thus offers flexibility to them in terms of reducing their harmful pollutants for the water bodies.
Another significant issue is that different polluters have different levels of capacity to reduce their pollutants. Some are better off than others to control their pollutants. This tendency opens the opportunity for the application of a tradable permit system for water pollution control. This system allows pollution to be reduced wherever it is least costly to do so and a 'cap' guarantees the total allowable emissions are not exceeded. For instance, the Hunter River Salinity Trading Scheme of Australia leads the world in using such economic instruments for the effective protection of waterways.
Regular monitoring of river water quality (physical, chemical and biological composition) is an important aspect to control river pollution. However, this is an expensive and time consuming ongoing activity which might be difficult for any government agency like the Department of Environment alone to perform the task on a regular basis. Even the powerful agencies like the Environmental Protection Agency of the United States assign this task to the community with assistance from the local administration. In Bangladesh we may think of exploring this option to ease the monitoring activity of hundreds of rivers in our country.
As we would all agree the time has come to take actions to protect our rivers from further degradation and before nature takes revenge on us. However, the prerequisite of taking any action is that we need environmentally aware and enlightened people for the purpose. Awareness about the negative consequences of our harmful activities which ultimately affect our precious natural resources including rivers can minimize the damage caused to them in many folds. That is why it is high time to stress on environmental education from the primary to the tertiary level of studies in our country because learners of today are the leaders of tomorrow.
The writer, a senior lecturer of the North South University, is currently on a study leave to pursue PhD in environmental management at the University of Sydney, Australia