Low-temperature normal-pressure evaporation and concentration device for recycling sewage

Abstract

The invention discloses a low-temperature normal-pressure evaporation and concentration device for sewage recycling, which comprises a waste heat utilization device, an evaporation and concentration device and a condenser, and is characterized in that the waste heat utilization device is connected with the evaporation and concentration device through a first pipeline; the waste heat utilization device comprises a circulating water supply pump, a water source heat pump and a second pipeline used for connecting the circulating water supply pump and the water source heat pump, the condenser is connected with the water source heat pump through a third pipeline, and the water source heat pump is connected with the condenser through a fourth pipeline. Heat energy of circulating water is fully utilized by the waste heat utilization device, waste heat of the circulating water is used as a heat source, sewage is heated to a certain temperature by the water source heat pump and then enters the evaporation concentration device, and concentration and separation of the sewage are realized by the low-temperature spraying type evaporation condenser. According to the invention, heat energy of circulating water can be recycled, wastewater resources can be fully recycled, and low-carbon environment-friendly efficient treatment equipment is provided for sewage recycling.

Description

technical field [0001] The invention relates to a low-temperature and normal-pressure evaporation concentration device for recycling sewage, belonging to the technical field of waste water treatment. Background technique [0002] With the development of the economy, the reality of the shortage of water resources has become increasingly prominent. The current situation of water resources is difficult to support industrial growth, further urbanization and water ecological security. Water resources have become the bottleneck of sustainable economic and social development in my country. The utilization of sewage resources is the fundamental way to break through the bottleneck of water resources. With the rapid construction of sewage treatment facilities, the country has formed a daily sewage treatment capacity of more than 200 million cubic meters, and the annual sewage treatment capacity exceeds 70 billion cubic meters, creating a prerequisite for the comprehensive promotion of...

AI Technical Summary

Problems solved by technology

The temperature of the circulating water is between 25°C and 40°C throughout the year, which contains a lot of waste heat. In the cooling process of the traditional cooling tower, this part of the heat energy is lost in the spray cooling process of the cooling tower. At the same time, the evaporation of the cooling water also loses a lot of water.

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