Precautions for daily operation of laminar dissolved air flotation machine
2024-10-28
Precautions for daily operation of laminar dissolved air flotation machine
The laminar dissolved air flotation machine is suitable for treating water with low turbidity, high chromaticity, high organic content, low oil content, low surface active substance content, or rich algae. Compared to other air flotation methods, it has the advantages of high hydraulic load and compact tank body. Below are the daily operation precautions for the laminar dissolved air flotation machine:
1. During inspection, observe the water level inside the dissolved gas tank through the observation hole. To ensure that the water level does not submerge the filling layer and affect the gas dissolution effect; Not less than 0.6m to prevent the inclusion of a large amount of undissolved air in the effluent.
2. Pay attention to the condition of the pool surface. If the surface of the floating slag in the contact area is uneven and the local water flow is turbulent, it may be due to individual release devices being blocked or falling off, and it needs to be checked and replaced in a timely manner. If it is found that the surface of the floating slag in the separation zone is uneven and there are often large bubbles bulging on the pool surface, it indicates that the bubbles do not adhere well to the magazine flocs, and the dosage needs to be adjusted or the type of coagulant needs to be changed.
3. When the winter water temperature is low and affects the coagulation effect, in addition to increasing the dosage, methods such as increasing the amount of flowing water or increasing the dissolved air pressure can also be used to increase the number of microbubbles and the adhesion of flocs, in order to compensate for the decrease in the buoyancy performance of aerated flocs due to the increase in water viscosity and ensure the quality of the effluent.
4. In order not to affect the water quality of the effluent, it is necessary to raise the water level in the tank during slag scraping. Therefore, it is important to accumulate operating experience, summarize the optimal thickness and moisture content of floating slag accumulation, regularly operate the slag scraper to remove floating slag, and establish a slag scraping system that is in line with the actual situation. In general, after the gas dissolution tank is self controlled, the scraper runs every 2-4 hours according to the amount of slag. The movement line of the scraper of the slag scraper should be opposite to the direction of water flow. In order to ensure that the movement speed of the scraper is not greater than the speed of the floating slag overflowing into the slag collection tank, the travel speed of the slag scraper should be controlled at 50-100mm/s.
5. Adjust the dosage of coagulant in a timely manner based on changes in flocculation in the reaction tank, floating slag in the separation zone of the air flotation tank, and effluent quality. At the same time, regularly check the operation of the dosing pipe to prevent blockage.
Dear old and new friends, Qingdao Qingtian Environment Company is a professional environmental protection and sewage treatment equipment manufacturing company established in 1995. It has nearly 30 years of experience in the production, manufacturing, use, and maintenance of environmental protection equipment. If you have any technical questions or need to inquire about equipment, please feel free to communicate and exchange information in a timely manner. Our technical personnel (13791840500) will reply to you as soon as possible.
Product range: Air flotation machines (vortex concave air flotation machine, dissolved air flotation machine, secondary air flotation machine, electrocoagulation air flotation), sedimentation tanks (vertical flow, radial flow, inclined plate Lanmela, etc.), scraper suction machines (peripheral transmission, central transmission, traveling type), scraper oil scraper, vortex concave aerator, stacked screw sludge dewatering machine, various filters, integrated sewage treatment equipment, integrated dosing and flocculation reaction system, and other non-standard environmentally friendly sewage equipment.
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