Manufacturing became one of the major sources for earning foreign currency. But it pollute the environment in various ways. Water pollution is a great problem, as industries throw chemical wastes into the water bodies. As a result the DO of surface waters decreasing at alarming rate, that finally threats the aquatic plants and animals. It also had negative impacts on human lifestyles, e.g. fishermen became bound to change their profession. It also have adverse impacts on the food chains. What can be done to reduce this sort of water pollution?
Hi Sudip, Seems I have answered your questions before, here again:
Surface water is easily polluted, but is also cleaned up relatively easily, as compared to groundwater because it is visible and accessible. Current measures include but not limited to the following:. 1, Urban domestic wastewater treatment; 2, Sanitation management; 3, Industrial wastewater treatment (what your question is mostly related); 4, Irrigation return water treatment...
Hope it helps.
Awareness of the population and economic agents is more important way of preventing water pollution.
Apart from DO, the chemical composition of water also gets changed with mixing of industrial waters, which in turn deteriorates the water quality making it unsafe even for utility purposes.
Sudip Saha : according to my opinion the answer to your question is: To treat wastewaters as much as possible before they come into the surface water recipient.
Regards
Vit
Dear Sir Mr. Vit Mateju,
Good evening.
I agree with you, Sir. Waste water treatment can reduce the water pollution. What can be done for the water sources which are already polluted.
With best regards
Dear @Sudip Saha : the source of pollution must be cut off at first. Then you have to treat the polluted water sources to improve quality of water in them.
Best regards
Vit
Do the root cause analysis, cut down the source of contamination, strict policy implementation, mass awareness.
Agreed what you mentioned here,
Most of the countries in the world there are several rules and regulations for controlling water pollution but no one implementing as much as possible. How ever, to determine the pollution from industries not a easy task because most of them think about their profit not the environment. Most of industries have EPL (environmental protection license) but no one proceed according to the mentioned protocols. Some industries release their effluent water either night time or rainy period. Therefore, real time monitoring system needs to catch up industries which release their effluent water without treatments and determine the pollution levels according to their type of production.
When considering dilution of pollutants, most of industries release their waste water into canals and finally those canals directly joint with major rivers, then getting diluting the pollutants. Therefore, river water sampling may not enough to identify the source of pollution.
If we can introduce new treatment systems or techniques to industrial sector (Bioremediation or phytoremediation), I think they may prefer if it is economical.
Industrial Water Pollution: Basically it is a broad topic.
Since many researchers have mentioned the basic points, I would like to focus more on lifecycle aspects.
If we look from lifecycle perspectives (considering the Industry as a unit to produce some product or service), then basically there are various stages where pollutants released to the environment.
-First those should be identified with their significances (lifecycle assessment would be helpful at this step).
-Then pollution should be minimized at various stages.
(there are various stakeholders such as government, policy makers, Industry, workers etc.)
Government should make policies to assist the industry in a way that the pollution is minimized. (for example taxing, license).
R and D shall be focused on developing technologies to minimize the pollutants and improve the treatment efficiencies.
Workers (and the industry) should be responsible for their actions.
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Industrial pollution of surface water can be controlled at the source.
Adequate legislation and awareness campaigns can contribute to the limitation of water pollution
CPCB has prescribed standards for disposal of industrial effluents into water bodies. The quality of treated effluent should be regularly checked before discharging into water bodies. The main parameters to be checked are pH, TSS, COD, BOD and O/G. The industry should implement ZLD System (Zero Liquid Discharge) in their unit, which would reduce water pollution to a great extent.
I think we can control this by making sure we treat all our waste and effluent before discharging it into the water bodies and environment.
strict legislation, wastewater treatment before discharge into surface water bodies and implementation polluter pay principle that make the industries responsible for waste production and wastewater resource recovery such as methane, nitrate, metals
The Industrial pollution of surface water can be controlled at the source and can mitigate it.
1- Awareness 2- Save the source of water from contamination ( it means do not throw any waste industry near the water source 3- implementation of strict policy.
i think 3 points are the most important things.
Focus should shift to adoption of in-plant controls, where the industry adopts processes that minimize the amount of water used (reduce volume of waste water generated), increase re-use and minimize pollutant load at source.
Some of these processes include simple housekeeping activities like reducing spillages which reduces the waste load and the amount of water required for cleaning. Other measures are; Re-using waste liquors from one process to another, segregation of waste streams so that some can be handled in their dry form and not all the wastes end up in the waste stream and waste recovery.
In plant controls are not expensive but may require reconfiguration of the factory set up which will have a capital cost. As such legislation and government incentives can be formulated to encourage industries to adopt such controls.
I think countries must act more proactively about this subject. We have rules, based on studies, researches and facts. Filters, recycling water, effluent pre-treatment , emissio ncontrol products, discharge of pollutants respecting limit values, environmental education.
Industrial water pollution is highly discipline subject, the study quality of these water base on studies, researchers, and facts. We try to reduce volume of waste water generated, minimize the contamination sources, increase re-use and minimize pollutant load at source that affect on water.
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