Wastewater sludge is also known as sewage sludge. Food and drink producers may also generate sludge as part of their operations. It is a major consideration for wastewater treatment plants around the world. It is an inevitable output of their operations and its disposal adds to operating costs. Sludge treatment is, therefore, an essential necessity. Sludge disposal typically occurs via one of two methods.
Wastewater Sludge Disposal Methods
In many countries sludge goes to landfill and, consequently, it contributes to global pollution. Sludge causes big problems as it still has water content. It drains and adds to the volume of leachate which landfills generate. Many countries build landfills without leachate containment measures. This subsequently causes huge problems due to leachate spilling over into clean natural water sources. Contaminated water then spreads to urban areas and is one of the biggest causes of diseases worldwide. This is notably and sadly the situation in many underdeveloped countries around the world.
Alternatively, sludge is often spread onto farmland as fertiliser. Although an easy solution, this potentially poses significant health risks. This is due to the fact that wastewater sludge can contaminate agricultural produce. It often contains a wide spectrum of heavy metals, pharmaceuticals, dioxins, flame retardants, polycyclic aromatic hydrocarbons, phthalates and many other chemicals and organisms. Some toxins can be present at low (considered safe) levels but others certainly are not. When applying sludge on land some harmful elements may end up into the actual fruits and vegetables we subsequently consume. As such, sewage sludge is not safe for use as land fertiliser and must be treated instead.
How Envitech Can Help With Sludge Treatment
At Envitech International we have an innovative and cost-effective solution for sludge treatment at the source. It eliminates around 85% of it within only 3 days. Meet the extremophile digestion technology which our partners Advetec Group have developed in the United Kingdom. Envitech is the authorised reseller of Advetec technology and products for the Republic of Bulgaria and the Dominican Republic.