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Wastewater from the washing of equipment, clothing and cleaning of personnel that has been in contact with agrochemicals requires an independent treatment system, since its disposal in domestic wastewater or coffee wastewater treatment plants can be toxic for the organisms responsible for the decontamination process, when biological systems are used, such as septic systems (for domestic wastewater) and biodigesters and Modular Anaerobic Treatment Systems - SMTA (for coffee wastewater).