Introducing the Cleaning and Maintenance of Quartz Sand Filter

 
In today's world, the importance of clean water sources is self-evident. Advances in water treatment technologies have provided us with various methods to ensure the safety of water quality, among which quartz sand filters stand out among many water treatment equipment due to their excellent performance and economic benefits. This article will delve into the cleaning and maintenance of quartz sand filters, offering you a comprehensive guide to help ensure the continuous and efficient operation of the equipment.

Preparations Before Cleaning

 
The preparatory work before cleaning the quartz sand filter is crucial, as it not only ensures the smooth progress of the cleaning process but also helps to extend the service life of the equipment and maintain the stability of water quality. Here are the detailed steps for the preparations before cleaning.
 
Equipment Inspection: Conduct a comprehensive inspection of the quartz sand filter to ensure that all components, including the filter body, support structure, connecting pipes, valves, and instruments, are in good working condition.
 
Integrity Confirmation: Check that all connections and seals are intact and show no signs of leakage. Ensure that all fasteners are tightened and there is no looseness.
 
Valve Status: Check and confirm that all valves, including the inlet valve, outlet valve, backwash valve, air vent valve, and drainage valve, are in the correct closed or open state.
 
Ventilation Operation: Close the air vent valve after seeing water to ensure that there is no air inside the equipment.
 
Emission System: Inspect the emission system to ensure it is unobstructed and free-flowing, guaranteeing the smooth discharge of wastewater during the cleaning process. Cleaning
 
Materials Preparation: Prepare the necessary cleaning materials, such as specialized cleaning agents, soft brushes, or other cleaning tools.

Detailed Cleaning Process

 
The cleaning process of the quartz sand filter is a systematic procedure aimed at removing impurities from the filter layer, restoring filtration efficiency, and ensuring the purity of water quality. Here is a detailed cleaning process.

1. Start-up Operation Ventilation

Open the inlet valve and air vent valve to expel air from the equipment until the water from the air vent valve is clear.
Rinsing: Open the filter inlet valve and the backwash discharge valve, and run until the turbidity of the effluent is reduced to below 2 mg/L to form a preliminary filtration effect.

2. Backwashing Operation

 
After a long period of inactivity, start with backwashing to loosen the filter layer and remove intercepted impurities. During the normal operation cycle of the equipment, backwash according to the pressure difference or water production setting to maintain the cleanliness of the filter layer.

3. Forward Rinsing and Water Production

 
Forward Rinsing: Open the filter inlet valve and forward rinse discharge valve, and rinse the filter layer at the flow rate during operation until the effluent is clear and transparent.
 
Water Production: Within the operation cycle, end the water production process according to the actual pressure difference or the set water production.

4. Air-Water Scrubbing

Mixed Scrubbing: Close the inlet valve and outlet valve, open the forward rinse discharge valve, air valve, and backwash inlet valve, and perform about 10 minutes of air-water mixed scrubbing to further clean the filter layer.

5. Drainage

Accumulated Water Discharge: Open the air vent valve and forward rinse discharge valve to drain the accumulated water in the filter to 200mm above the filter material layer, ensuring the filter material layer is dry.

Precautions for Cleaning Operations

 
When performing the cleaning operation of the quartz sand filter, pay attention to the following key points to ensure the safety, effectiveness, and long-term stable operation of the cleaning process.
 
Backwash Flow Control: The backwash flow should be adjusted according to the characteristics of the filter material and the amount of interception, usually about three times the flow rate during operation to prevent the loss of filter material.
 
Forward Rinsing Time: The forward rinsing time is usually 20 minutes, but it should be extended according to the clarity of the effluent.
 
Water Quality Monitoring: Regularly monitor the turbidity and other water quality parameters during the cleaning process to ensure that the cleaning effect meets the expected goals.
 
Equipment Inspection: Thoroughly inspect the filter and all its accessories before cleaning to ensure there are no damaged or worn parts, preventing further damage during the cleaning process.
 
Equipment Maintenance: Regularly check the wear of each part of the equipment and replace damaged parts in time to ensure the normal operation of the equipment.
 
Safety First: Before commencing the cleaning process, ensure that all operators are fully informed and adhere to safety procedures, wearing appropriate personal protective equipment such as hard hats, safety goggles, gloves, and non-slip shoes.
 
With the end of the cleaning process, we have not only completed a deep cleaning of the quartz sand filter but also ensured that it can provide stable and efficient water treatment services for a period of time in the future. Remember, regular cleaning and maintenance are key to ensuring equipment performance and extending service life. Through the guide of this article, we hope you can manage and maintain your water treatment equipment with more confidence.