Solar energy and recycled water dual-heat-resource heat pump sludge drying system

Abstract

The invention discloses a solar energy and recycled water dual-heat-resource heat pump sludge drying system. The system is characterized by comprising full-automatic plate-and-frame filter-pressing equipment, crashing equipment, and solar energy and recycled water dual-heat-resource heat pump drying equipment which are in combined configuration, wherein the solar energy and recycled water dual-heat-resource heat pump drying equipment mainly comprises heat pump drying equipment, a drying chamber and a solar heat collector arranged thereon; a multilayer belt conveyor, a multilevel crashing device and a high-voltage electric field which are distributed from the top to the bottom are arranged in the drying chamber; the heat pump drying equipment has two working cycles of dehumidifying and a heat pump, and mainly comprises an evaporator, a gas-liquid separator, a compressor, a condenser, a throttling device and a dehumidifying evaporator, wherein the evaporator is connected with a recycled water system; the compressor, the condenser and the throttling device are connected with the gas-liquid separator; a heat exchanger is arranged outside the condenser; and the on-off state of the cycling loops of the two working cycles is controlled by an electromagnetic valve. The solar energy and recycled water dual-heat-resource heat pump sludge drying system has the characteristics of rational process technical route, stable operation, lower investment cost, simple equipment mechanism, modularized combination, high automation degree in whole operational control and simple operation and maintenance.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to equipment for further dehumidifying and drying sludge in a sewage plant. Background technique [0002] With the continuous improvement of people's quality of life, the requirements for urban sewage treatment have also increased accordingly, and the load of urban treatment plants has increased day by day. At present, urban sewage mainly includes domestic sewage and industrial sewage, which are collected by urban drainage pipe networks and transported to sewage treatment plants for treatment. The urban sewage treatment process generally determines the degree of sewage treatment and the corresponding treatment process according to the utilization or discharge of urban sewage and the natural purification ability of the water body. Whether the treated sewage is used for industry, agriculture or recharge to replenish groundwater, it must meet the relevant water quality standa...

AI Technical Summary

Problems solved by technology

However, due to the limitations of the design concept, there are still problems such as high moisture content of the sludge after treatment, excessive additions, huge energy consumption, and high operating costs.

With the rapid development of my country's economy, there has been a serious shortage of land resources, and less and less land can be used for traditional sludge treatment methods; at the same time, limited by the existing sludge treatment equipment technology, cost, efficiency and other factors, my country's sewage The means and efficiency of sludge treatment have formed a great contrast with the actual situation of my country's rapid economic growth. Sludge disposal has become a thorny issue that directly affects my country's sustainable development, building a harmonious society and an innovative country.

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