The cost of treating one ton of water by a wastewater
evaporator varies depending on various factors. Here are some common types of wastewater evaporators and their approximate cost ranges:
Steam heat source wastewater evaporator
• Steam cost: The price of urban steam generally ranges from 3570 yuan per ton. Specific costs also depend on factors such as the supply source, usage volume, and preferential policies.
•
Sewage Treatment cost: It depends on the local sewage treatment pricing policy. Generally, the cost for treating industrial wastewater is higher. For instance, for industrial wastewater with poor quality, it may cost 79 yuan per ton.
The operating and maintenance costs of the evaporator: This includes the regular maintenance and repair expenses of the equipment, as well as the energy consumption costs. Overall, the cost of treating each ton of wastewater is relatively high.
• Energy consumption cost: The energy consumption for evaporating 1 ton of water by an MVR evaporator is approximately 40 kW·h (equivalent to 14.4 kg of standard coal). It is mainly driven by electricity, supplemented by a small amount of steam. The cost per ton of water treated is approximately 6070 yuan.
• Operating cost: Taking an evaporator that evaporates 50 tons of water per hour as an example, the cost per ton of water for MVR evaporators can be as low as 2,022 yuan per ton, which is much lower than the cost per ton of water for traditional evaporators (approximately 50 yuan per ton).
Multi-effect evaporator
• Energy consumption cost: Taking the three-effect evaporator as an example, it is mainly driven by steam energy. There will be a certain amount of power machinery consuming electricity within the system, and the cost per ton of water treatment is approximately 120 yuan.
• Operating cost: The operating cost of multi-effect evaporators is relatively high. This is mainly due to their high energy consumption, as well as the relatively complex structure of the equipment and the higher maintenance costs.
Low-temperature evaporator
• Energy consumption cost: By using the low-temperature vacuum distillation method to treat waste liquid, the waste liquid evaporates and boils at 30 degrees in a vacuum of -97 kPa. The energy consumption is relatively low, and the current energy consumption per ton of water can be reduced to as low as 60 degrees of electricity.
• Operating cost: The operating cost of the low-temperature evaporator is relatively low, and it is less prone to scaling and has stable operation, which can effectively reduce the operating cost.
Other relevant factors
• Equipment depreciation: Factors such as the purchase cost and service life of the equipment will affect the depreciation expense. The depreciation expenses for different types and sizes of evaporators vary significantly.
• Personnel salaries: The salaries of operators and maintenance staff are also part of the handling costs. Equipment with a high degree of automation can reduce labor costs.
• Administrative expenses: These include costs related to equipment management, formulation and implementation of maintenance plans, etc. The specific expenses vary depending on the management model and scale of the enterprise.