System and method for controlling a system for measuring wastewater temperature and protecting the wastewater treatment system of a self-service car wash

Abstract

The subject of the application is a system for measuring the cooling temperature and protecting the wastewater treatment system from a self-service car wash, in which the inlet line (1) is connected via the car wash hydraulic system (2) to the treatment system (3). The inlet line (1) is connected to the inlet (4.1) of a controlled three-way valve (4), the first outlet (4.2) of which is connected via a T-piece (5) and the car wash hydraulic system (2). A temperature sensor (6) is mounted between the car wash hydraulic system (2) and the treatment system (3). The temperature sensor (6) is connected via a first signal line (6.1) to an electronic control unit (7), which is connected via a second signal line (6.2) to the controlled three-way valve (4). The second outlet (4.3) of the controlled three-way valve (4) is connected to the first inlet (8.1) of the heat exchanger (8), the first outlet (8.2) of which is connected to the T-piece (5). Second inlet (8.3) and second outlet (8.4) of the heat exchanger (8) are connected to the outlet and inlet of the car wash water heating system (9).

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