Ziyun Group participated in a reclaimed water reuse project at a sewage treatment plant. The project has a design capacity of 500 m³/d and uses one integrated reclaimed water reuse unit with a treatment capacity of 25 m³/h. The treated reclaimed water is used for car washing and road flushing.The value of this case lies in converting sewage plant effluent into a stable non-potable alternative water source, providing a reference configuration approach for reducing fresh water consumption in scenarios such as municipal and vehicle cleaning.
Project overview: matching car washing and road flushing needs with a design capacity of 500 m³/d
This project addresses the reclaimed water utilization scenario of a sewage treatment plant. Its core objective is to further treat the water after sewage treatment into reuse water suitable for car washing and road flushing.The project design capacity is 500 m³/d, which is a medium-scale reclaimed water reuse configuration, suitable for forming relatively centralized water intake and use arrangements within or around the plant.It should be noted that 500 m³/d is the overall design capacity of the project, not the rated treatment capacity of a single unit. The two are stated separately in the scheme, and daily operating hours are not calculated on this basis.
From the water use perspective, car washing and road flushing have different water quality requirements from drinking water, with greater focus on whether conventional indicators such as suspended solids and turbidity meet the corresponding use conditions.Using reclaimed water for such purposes can meet the water demand for daily cleaning operations without diverting high-quality water sources, and also helps sewage treatment plants expand the direction of water resource reuse beyond compliant discharge.
- Project design water volume: 500m³/d, used for car washing and road flushing and other reuse purposes
- Project positioning: reuse of reclaimed water from a wastewater treatment plant, rather than a landscape water supplementation type of project
- Water use characteristics: mainly non-potable cleaning water, replacing part of the clean water consumption
Equipment configuration: the selection logic of 1 unit of 25m³/h integrated reclaimed water reuse equipment
The project uses 1 unit of integrated reclaimed water reuse equipment with a treatment capacity of 25m³/h.The characteristic of the integrated equipment is its high degree of integration, making it easy to arrange under the existing site conditions of the wastewater treatment plant and reducing the land occupation and connection issues caused by dispersed structures.For reclaimed water reuse projects, the equipment treatment capacity and the project design water volume need to be viewed separately: 25m³/h reflects the treatment capacity of a single unit of equipment, while 500m³/d reflects the overall design water volume of the project; the two are stated independently in the scheme and are not converted into each other.
In terms of system organization, the integrated reclaimed water reuse equipment usually undertakes the task of further treating the effluent from the wastewater treatment plant, making the effluent closer to the requirements for car washing and road flushing.The specific process route, inlet and outlet water indicators, and test results of the equipment were not provided in this material, so no further explanation is given.What can be confirmed is that this project is configured with a single unit of equipment as the core, with a relatively simple structure, facilitating subsequent operation management and maintenance arrangements.
- Core equipment: 1 integrated reclaimed water reuse unit
- Single-unit treatment capacity: 25m³/h, stated separately from the 500m³/d project design water volume
- Configuration features: high degree of integration, facilitating layout and connection within the wastewater treatment plant scenario
Reuse applications: how reclaimed water is utilized for car washing and road flushing
The destination of the reclaimed water in this project is clear, mainly used for car washing and road flushing.The common feature of these two applications is that water consumption is relatively concentrated, and the water quality requirements are mainly based on conventional cleaning indicators, making them suitable as priority directions for reclaimed water reuse.For a wastewater treatment plant, using treated water for these scenarios is equivalent to adding a resource utilization stage after the original treatment chain, extending the value of the water.
From a practical usage perspective, the timing and volume of water use for car washing and road flushing may fluctuate, so the reuse system needs to have a certain capacity for regulation and stable water supply.The project is configured based on a design water volume of 500m³/d and one 25m³/h integrated equipment unit. The specific operation schedule, water storage method, and water supply dispatch are not explained in the materials, and this article makes no speculation.Overall, this combination of uses is close to daily municipal and vehicle cleaning needs and has good replicability.
- Reuse direction: car wash water and road flushing water
- Scenario characteristics: water use is relatively concentrated, suitable for reclaimed water to replace part of the clean water
- Project significance: extending the water resource utilization chain after the wastewater treatment plant meets discharge standards
Case value: providing a reference configuration path for reclaimed water utilization in wastewater treatment plants
The reference value of this project lies in the way it aligns three elements—the design water volume of the project, the treatment capacity of a single unit, and the end-use application for reuse—forming a relatively clear pathway for reclaimed water utilization.For wastewater treatment plants or industrial parks with similar needs, this configuration approach—centered on integrated reclaimed water reuse equipment and aimed at non-potable uses such as car washing and road washing—offers certain reference value.
It should be objectively noted that this project does not provide information such as location, implementation date, specific treatment process, testing results, water savings, or customer feedback; therefore, this article does not supplement or infer any of the above content.The equipment and configuration approach provided by Ziyun Group in this project can serve as a reference case for discussions of reclaimed water reuse solutions. For subsequent scenarios involving larger scale or higher water quality requirements, separate evaluation will still be needed based on specific water quality and water use needs.
- Configuration approach: using integrated equipment to undertake further treatment of wastewater treatment plant effluent
- Applicable direction: non-potable cleaning water scenarios such as car washing and road washing
- Follow-up recommendation: conduct targeted solution evaluation based on specific water quality and water use needs
Follow-up arrangements
The Ziyun Group 500m³/d reclaimed water reuse project centers on one 25m³/h integrated reclaimed water reuse unit, using reclaimed water from a sewage treatment plant for car washing and road flushing, demonstrating a feasible configuration for wastewater resource utilization in clean water use scenarios.For users interested in reclaimed water reuse, they can further discuss equipment selection and system integration plans based on their own water volume scale and water use purposes.