Decontamination system for wastewater heat exchanger

Abstract

The invention discloses a decontamination system for a wastewater heat exchanger, belonging to the technical field of energy utilization. A bypass pipeline at a wastewater inlet side of an upper water end of a system cleaner is communicated with a bypass pipeline at a wastewater inlet side of a lower water end of the cleaner, and a valve is mounted between the communicated pipelines. A bypass pipeline at a lower water side of the upper water end of the cleaner is communicated with a bypass pipeline at the lower water side of the lower water end of the cleaner, and a valve is mounted between the communicated pipelines. A bypass pipeline in the middle of the upper water end of the cleaner is communicated with a bypass pipeline in the middle of the lower water end of the cleaner, and a wastewater heat exchanger, a third filter and a valve are mounted between the communicated pipelines. According to the system disclosed by the invention, a decontaminating ball is driven by pushing of wastewater to do reciprocating motions in a wastewater channel in a pipe of the heat exchanger by opening the valves to realize relative pipeline switching, so as to remove a dirt layer on the inner wall of the pipe by colliding and rubbing the dirt layer on the inner wall of the pipe. Therefore, the dirt heat resistance of the heat exchanger is reduced to improve the heat exchange property of the wastewater heat exchanger.

Description

technical field [0001] The invention belongs to the technical field of energy utilization, and in particular relates to a waste water heat exchanger decontamination system. Background technique [0002] With the rapid development of the economy and the improvement of living standards, the energy consumption of domestic hot water has increased dramatically. At present, the temperature of domestic wastewater is generally between 28 and 38 °C, which belongs to low-grade heat. In particular, the discharge of domestic wastewater from barbershops and bathing centers is large and relatively concentrated, and the waste heat contained in it is easy to be recycled. Because the wastewater contains a certain amount of sludge and impurities, it is easy to adhere to the inner wall of the tube of the wastewater heat exchanger to form a certain thickness of dirt layer. This not only increases the fouling thermal resistance, but also increases the flow resistance. Generally speaking, when...

AI Technical Summary

Problems solved by technology

Due to such problems in wastewater water heaters, it is difficult to popularize and apply waste heat recovery and utilization of waste water, resulting in a large amount of waste heat being directly discharged into the environment and being wasted in vain

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