Detailed application of vertical long axis suspended semi submersible sump pump in the transportation of acid washed sludge concentration tank

The vertical long axis suspended semi submersible sump pump, with its core characteristics of corrosion resistance, wear resistance, non clogging, and deep pool extraction, has become the core selection for the transportation of difficult and complex sludge in the pickling sludge concentration tank. It is suitable for the transportation requirements of the entire pickling sludge concentration tank process. The specific application details are as follows:
Core transportation scenario of acid washed sludge concentration tank
·Bottom settling sludge direct pumping and transportation: High concentration acid washed sludge is directly extracted from the bottom of the acid washed sludge concentration tank after settling. This type of sludge contains a large number of iron oxide scale particles and iron hydroxide precipitates, with a solid content of up to 10%~30%. Customized impellers with stirring blades can directly break up the sludge and prevent sedimentation and compaction at the bottom of the tank.
·Concentrated sludge to dewatering machine feeding and transportation: The concentrated acid washed sludge is stably lifted and transported to sludge dewatering equipment such as plate and frame filter presses, providing continuous and stable feeding pressure to ensure the continuous operation of the sludge dewatering process.
·Reflux transportation of clear liquid on the concentration tank: Simultaneously transport the acid washed supernatant from the upper layer of the sludge concentration tank, and reflux it to the front-end wastewater treatment process for reprocessing, achieving water resource recycling.
·Concentrated tank cleaning, emptying and transportation: During regular dredging and maintenance of the concentrated tank, the residual high concentration acid washed sludge in the tank can be completely drained without manual cleaning, greatly reducing the safety risks of tank cleaning operations.
✅  Core advantages of scene specific adaptation
·Outstanding anti-corrosion and wear-resistant composite performance: The overcurrent components can be made of high chromium wear-resistant alloy, fluoroplastic lining and other materials, and can withstand the corrosion of residual acidic media in acid washed sludge and long-term erosion of high hardness iron oxide scale particles, suitable for harsh working conditions of strong corrosion and high abrasion composite.
·Strong non clogging ability: The semi open large channel impeller combined with bottom stirring blades can effectively disperse the acid washed sludge, smoothly pass through high concentration solid particles, and avoid the common sludge entanglement, jamming and blockage problems of ordinary pump types.
·Leak free safety guarantee: With no exposed mechanical seal design, the leakage of acid washed sludge containing residual acid is completely eliminated from the source, avoiding acid mist and corrosive sludge volatilization and diffusion, fully meeting the safety and environmental protection requirements for acid washed sludge disposal.
·Strong adaptability for deep pool liquid extraction: The length of the underwater insertion can be customized according to needs, and it can be directly buried below the liquid level of the concentration tank for operation without the need for pumping. It is suitable for the conventional depth working conditions of 3-8 meters in acid washed sludge concentration tanks.
Key points for scene specific selection
·High chromium wear-resistant alloy materials are preferred for overcurrent components, taking into account both corrosion resistance and wear resistance, greatly extending the service life of the equipment under high solid content acid washed sludge conditions.
·The guide bearing must be equipped with an external clean cooling water forced lubrication system, using hard alloy shaft sleeves to prevent solid particles from acid washed sludge from entering the bearing and causing wear and jamming.
·Reserve more than 30% of the selected flow rate to adapt to the characteristics of acid washed sludge concentration fluctuations and avoid the problem of insufficient conveying flow for high concentration sludge.
·When the underwater depth exceeds 3 meters, an intermediate support guide bearing must be installed to ensure smooth operation of the long shaft and avoid vibration exceeding the standard when transporting high concentration sludge under high load.
At present, the vertical long axis suspended semi submersible sump pump, which is suitable for the transportation of acid washed sludge concentration tanks, has a mainstream flow rate coverage of 10-2200m ³/h and a head of 5-100m. There are already a large number of mature landing cases in the metallurgical and hardware acid washing industries. The vertical long axis suspended semi submersible sump pump fully meets the demanding requirements of acid washed sludge concentration tank transportation.