| Catalan | English |
| aigües residuals | used water Wastewater or utilized water from a home, community, farm or industry, which is often discharged after utilization |
| aigües residuals comercials | wastewater from trade Liquid or waterborne wastes polluted or fouled by commercial operations |
| aigües residuals urbanes | urban wastewater The liquid wastes deriving from domestic, commercial and industrial activities of an urban settlement |
| contaminació d'aigües residuals | waste water pollution The impairment of the quality of some medium due to the introduction of spent or used water from a community or industry |
| càrrega d'aigües residuals | waste water load The amount of spent or used water, often containing dissolved and suspended matter, that is found in a stream or some other body of water |
| depuració d'aigües residuals | waste water purification Processing of waste water for reuse |
| depuradora d'aigües residuals | waste water treatment plant Plant where, through physical-chemical and biological processes, organic matter, bacteria, viruses and solids are removed from residential, commercial and industrial wastewaters before they are discharged in rivers, lakes and seas |
| descàrrega d'aigües residuals | waste water discharge The flow of treated effluent from any wastewater treatment process |
| disposició d'aigües residuals | waste water disposal Collection and removal of wastewater deriving from industrial and urban settlements by means of a system of pipes and treatment plants |
| eliminació d'aigües residuals | sewage disposal |
| estadístiques d'aigües residuals | waste water statistics No definition needed |
| fang d'aigües residuals | sewage sludge A semi-liquid waste with a solid concentration in excess of 2500 parts per million, obtained from the purification of municipal sewage |
| fang d'aigües residuals | waste water sludge The removed materials resulting from physical, biological and chemical treatment of waste water |
| legislació d'aigües residuals | waste water legislation A binding rule or body of rules prescribed by a government to regulate the outflow and disposal of spent or used water from a home, community, farm or industry that contains dissolved or suspended matter |
| prohibició d'extensió d'aigües residuals | sewage spreading prohibition Prohibition of spreading sewage sludge on land to prevent accumulation of toxic heavy metals in excessive quantities |
| qualitat d'aigües residuals | waste water quality The state or condition of spent or used water that contains dissolved or suspended matter from a home, community farm or industry |
| reducció d'aigües residuals | waste water reduction The act or process of lessening the volume of used or spent water that is discharged from homes, businesses or industries |
| sistemes de tractament d'aigües residuals | sewage treatment system Sewage treatment comes in two stages - primary and secondary treatment. The primary stage involves a process of screening solids from sewage, leaving a sludge and relatively clear water for further treatment or for disposal into rivers, the sea or on to the land. In the secondary stage the sludge is stirred constantly in vast tanks to get more oxygen into the mixture, allowing bacteria to break down the organic matter and leave a harmless residue that falls as a sediment to the bottom of the tank. After processing, the clear water on top of the tank is discharged into rivers and the sediment is used as landfill or discharged at sea |
| taxa per aigües residuals | waste water charge Imposed fee, expense, or cost for the management of spent or used water that contains dissolved or suspended matter from a home, community farm, or industry |
| tractament biològic d'aigües residuals | biological wastewater treatment Types of wastewater treatment in which biochemical or bacterial action is intensified to oxidize and stabilize the unstable organic matter present. Examples of this type of treatment use intermittent sand filters, trickling filters, and activated sludge processes and sludge digestion |
| tractament d'aigües residuals | waste water treatment Any process to which wastewater is subjected which would remove, or otherwise render harmless to human health and the environment, its constituent wastes |
| tractament d'aigües residuals in situ | on-site wastewater treatment A process in which used or spent water is treated at the point of origin or where it was produced, by using a septic tank or some other system to remove or reduce the impact of constituent wastes on human health and the environment |
| tractament individual d'aigües residuals | individual wastewater treatment The process of using a natural system or mechanical device to collect, treat and discharge or reclaim wastewater from an individual dwelling without the use of community-wide sewers or a centralised treatment facility |
