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Environmental Business Review | Friday, October 07, 2022
When using outdated sewage treatment systems, companies can lose money due to their inability to adapt to changing climate conditions.
FREMONT, CA: The wastewater includes around 6.2 million tonnes of nitrogen to coastal waters every year, along with unspecified amounts of other pollutants from pharmaceuticals to microplastics. All these are driving a detrimental influence on human health and the environment. For example, wastewater pollution is undermining the earth’s safe operating systems. Also, wastewater discharges pollute the freshwater oceans and land with nutrient overloads and other contaminants, harming biodiversity and even deteriorating the climate crisis.
Still, many technologies and innovations are being implemented and tested to solve the issue of wastewater pollution. Also, every successful small solution can be expanded globally, which will offer an opportunity to start rectifying numerous planetary boundary breaches. Thus, continuous efforts are made around the globe to treat wastewater and offer adequate sanitation and recover and reuse the necessary nutrients and freshwater that are discharged as waste.
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Antiquated Infrastructure and Climate Risks
Insufficient waste treatment strategies are not only an issue in developing countries–many developed countries also utilize outdated wastewater treatment systems that cause serious problems. Combined sewage overflow (CSO) is one concerning issue that appeared because of a treatment system design flaw. Citywide devices were sent to waste and stormwater with the same pipes, which operated fine until raised rainfall. Regardless, rainfall was frequent because of climate change. Then the surge of unclean water bypassed these sewage treatment plants, transmitting thousands of liters of raw or partly treated sewage water into lakes, rivers, and oceans.
Hence, CSOs have evolved into a critical concern for water pollution. Unfortunately, these incidents need huge amounts of money to fix and are a financial burden in many countries. Still, an expensive solution for maintenance is the construction of deep tunnels, which expand sewer storage capacity and offer sufficient time for water to be treated and disposed of properly during heavy rain and storm events. Unfortunately, such systems have also been implemented in various cities at a high cost.
These large-scale expenditures cannot be relied on to stop sewage outflows and are susceptible to being overcome by more regular harsh weather or climate change. Many countries are progressing with their deep tunnel construction to alleviate CSO releases. Yet, some are concerned rising precipitation over future decades will surpass the new tunnel’s capacity. In addition, climate forecasts forecast further extreme precipitation occurrences.
Thus, other solutions are greatly necessary. Some more expensive alternatives incorporate improved wastewater flow monitoring, parting storm and sewage pipe systems from one another, and developing treatment facilities. Prompt water treatment technologies are also being invented. As there is no specific solution to the CSO issue, a host of initiatives must be taken to curb the larger effect of the issue.
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