IMPROVING THE TREATMENT TECHNOLOGY OF WASTEWATER GENERATED AT MAINTENANCE FACILITIES

Abstract

This article examines the development of improved wastewater treatment technologies for repair facilities that contain oils and petroleum products, diesel fuel residues, and suspensions generated in diesel engine cooling systems in low-concentration wastewater. The article presents the main engine repair cycles at a mechanical repair facility. The primary engine repair cycle at a mechanical repair plant consists of external steaming of the unit in a steam chamber with the resulting wastewater discharged into a collection pit. Next, the engine is disassembled into individual components and washed in cross-type washing machines with the periodic discharge of spent cleaning solutions into collection tanks. After the components have been restored, the diesel engine is assembled and tested on test benches. The necessary components are electrochemically galvanized, chromed, or iron-plated. Several local wastewater treatment schemes for the plant are proposed, with the recovery and reuse of valuable components. Wastewater and waste process solutions are conventionally divided into low-concentration and concentrated. Low-concentration wastewater includes effluent from diesel engine testing areas, rinse water from galvanic baths, and discharge from diesel engine cooling systems.

Subject: Treatment of wastewater contaminated with oils, diesel fuel residues, and suspensions generated in diesel engine cooling systems, including low-concentration wastewater, in recirculating water systems.

Materials and Methods: The selected research subject, wastewater treatment systems from repair facilities, allows for the expanded use of wastewater treatment technologies at repair facilities and production facilities generating wastewater containing contaminants of plant, natural, and aggressive origin, thereby enhancing the reliability and efficiency of industrial water management facilities.

Results: A complete treatment cycle for wastewater generated at repair facilities has been developed, ensuring the environmental safety of facilities with recirculating water systems and the efficient use of water in their operational cycles. Key findings: For the treatment of wastewater generated in repair facilities, including parts steaming areas, washing areas, mechanical and galvanic areas, and equipment testing areas. The basic design of the wastewater treatment system consists of a settling tank, a cyclone, an oil concentrate collector, a container for collecting wastewater and lubricant preparation, and other auxiliary equipment.