Various raw waters contain a certain concentration of suspended solids and dissolved substances. Suspended solids mainly consist of inorganic salts, colloids, microorganisms, algae, and other biological particles. Dissolved substances primarily include easily soluble salts and sparingly soluble salts (such as carbonates, sulfates, and silicates), metal oxides, acids, and bases. During the reverse osmosis process, the volume of incoming water decreases, while the concentration of suspended particles and dissolved substances increases. Suspended particles will settle on the membrane, blocking the water flow channels and increasing friction resistance (pressure drop). When sparingly soluble salts exceed their saturation limit, they will precipitate out of the concentrated water, forming scale on the membrane surface, which reducesROMembrane flux, increased operating pressure, and pressure drop can lead to a decline in product water quality. The phenomenon of forming a fouling layer on the membrane surface is known as membrane fouling, which results in the degradation of system performance. Pre-treatment of the raw water before it enters the reverse osmosis membrane system is necessary to remove suspended solids, dissolved organic matter, and excessive amounts of non-soluble salts that may cause fouling of the reverse osmosis membrane, thus reducing the tendency of membrane fouling. The purpose of pre-treating the incoming water is to improve its quality, makingROThe membrane has achieved reliable operation assurance.
Initial Daily Operation Check for Water Treatment Equipment
1Following the transition to normal production., Operators must conduct routine inspections of the equipment site every hour. Record the findings accurately and summarize them with operating logs for reference in scheduled maintenance.
2Review Cycle——Inspection Items——Inspection Methods or Inspection Points——Note:
3Once per shift——Inspect for Leaks——Are there any leaks in the sealed parts of the equipment and its附属valves?——If there is any leakage——Identify the leak location and cause, and stop the leak promptly.
4Inspect for vibration——When valves open and close, are there any abnormal vibrations?——In case of vibration, identify the cause and take timely corrective actions.
5Once a month——Validate Traffic——Verify flow meter readings to ensure they indicate normal flow.——If traffic displays abnormally, promptly investigate the cause and rectify the fault.
Section II: Regular Pre-treatment Inspections for Water Treatment Equipment
Equipment must undergo regular inspections., The purpose is to ensure the safe operation of the system over an extended period. This equipment is of a larger size, requiring a longer time for inspection. To minimize the downtime for regular inspections, it should be carried out simultaneously with the maintenance of other equipment in the original water treatment facility. Any anomalies found should be addressed promptly.
1Filler Inspection——Inspecting Activated Carbon Filtration Material, Activated carbon filter media has lost its adsorption capability., All should be replaced.
2Water Filter Cap Inspection——Extracted the filling, Rinse clean with water, Inspection of filter caps on porous plates, Discover any damage or loose parts, Replace or secure promptly.
3Rubber Lining Inspection——If bubbles, cracks, adhesive delamination, or micropores are found in the rubber lining, repairs should be made.
4Internal Fastener Inspection——Inspect bolts, nuts, and other fasteners within the filter.,Looseness should be tightened if present.
5Manhole Seal Inspection——We replaced the deformed manhole sealing gasket; immersed the bolts and nuts in cleaning oil., Completely remove rust; apply lubricating grease on the bolts and nuts when installing the manhole cover.
Section 3: Pre-treatment Filter Media Replacement for Water Treatment Equipment
1No Chinese content provided.——Drain the accumulated water inside the filter.
2Discharging materials——Open the filter's discharge port, allow a small amount of water into the backwash opening, and flush out the media.
3The company has initiated a clean-up operation.——Drain the accumulated water from the filter, open the access manhole, enter the filter, and clean out the remaining filter material.
4Washing——Wipe the interior of the filter with a rag.
5No Chinese content provided for translation.——Seal the discharge port, fill and level the filter material according to regulations, first with quartz sand, then level it after filling, followed by activated carbon.
6Closed Filter——Inspect filter media filling height to meet requirements, seal the manhole cover.
7Washing filter media——Wash the filter media in reverse order of the filter, until the effluent turbidity is less than1No Chinese content provided.
