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Prevention of membrane hole blockage and membrane cleaning, Inner Mongolia wastewater treatment ~

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Prevention of membrane hole blockage and membrane cleaning, Inner Mongolia wastewater treatment ~

作者: Release Date: 2019-01-27 Author: Click:

To prevent membrane hole blockage and membrane cleaning, Inner Mongolia wastewater treatment ~ It is recommended to use a microporous aerator. The bubbles and water flow generated by aeration will make the membrane wire fully shake and scrub the membrane. At the same time, the intermittent operation mode is adopted. The self-priming pump sucks for 13 minutes and stops for 2 minutes, which can prevent the membrane hole from being blocked and make long-term stable operation possible. In the initial use, the biochemical pond microorganism culture achieved good activity, and the membrane was only put into operation when the viscosity was low. When the system is running, a constant flow method (even water discharge for 24 hours) is adopted. It is strictly forbidden that the effluent flow is unstable or over-flow operation within a short time. The suction negative pressure can be read by a vacuum pressure gauge, and the diaphragm operating negative pressure is -0.01 ~ -0.04Mpa; when conditions permit, the effluent should be siphoned, and the difference between the liquid level of the biochemical pool and the liquid level of the membrane outlet pool should be 3.0 ~ 4.0 meters, the membrane is not easy to contaminate, and the cleaning cycle is longer. When the operating negative pressure exceeds 0.05MPa, the diaphragm needs to be cleaned in time. The cleaning method is: when the quantity is relatively small, remove the membrane from the membrane frame (when the quantity is relatively large or the conditions permit, the entire membrane frame is suspended and washed in the cleaning tank) Rinse the membrane surface with clean water to remove the activated sludge attached to the membrane surface; then soak the membrane with a 3-5% NaOH solution for more than 2 hours (the effect is better overnight). Inner Mongolia sewage treatment to remove the adhered membrane Organic matter and colloidal substances on the surface of the sheet, then rinse the membrane with clean water, and the membrane flux can be restored; if the wastewater contains high calcium and magnesium ions and metal hydroxides, it needs to be washed with NaOH before using 2 -3% HCl solution soaked for 1-2 hours (it is best to make the membrane wire fully shake, so that the acid can fully contact and react with the pollutants), then rinse the membrane with water, you should pay attention to Remove all metal fittings on the membrane module to avoid being corroded by acid; if the above cleaning effect is not good, you can soak with 0.5% NaClO solution (pH adjusted to above 10) for 0.5-1 hour, killing all organisms attached to the membrane surface And then clear Rinse thoroughly to remove contaminants, but immersed in Inner wastewater treatment process must be controlled so as to avoid soaking time not too long filaments oxide film, a decrease in strength. During the cleaning process, the operator is required to be very careful to avoid breaking the membrane filaments. At the same time, care should be taken to keep the membrane surface wet, and to prevent the membrane from freezing or losing water during the cleaning process, so as not to affect the membrane flux or even cause the membrane to not produce water.

Note: 1. The membrane must be kept in a wet state at any time. Once dehydrated and dried, it will cause irreversible damage to the membrane module. 2. NaOH solids and solutions, hydrochloric acid and NaClO are highly corrosive. Operators should be careful and wear rubber gloves, rubber suits, helmets and goggles if necessary to avoid direct contact with them. 3. NaClO solution is strongly oxidizing, and it is only used in the case of poor cleaning effect by acid and alkali, which will adversely affect the service life of the membrane. 4. When the membrane is sucked, the amount of aeration under the membrane must be guaranteed, and the self-priming pump should not be operated when the fan is stopped. 5. When the membrane surface is washed with tap water, the pressure can be appropriately increased, and the washing effect will be better, but the pressure should not be too large to prevent large impact on the membrane. 6. When the amount of treatment per person is insufficient, it is recommended to distribute water evenly for 24 hours, and it is strictly forbidden to run over flow for a short time; at the same time, it is strictly prohibited to run over flow per day.

Transport storage and handling

The entire transportation and storage process should ensure that the ambient temperature of the membrane or device after being hydrophilic is within the range of 5-40 ° C, and the wastewater in Inner Mongolia is treated to avoid damage to the membrane module. And avoid exposing the device to sunlight, so as not to cause damage to the engineering plastics on the device by ultraviolet rays. If the on-site ambient temperature is lower than 0 ℃, it is recommended that the membrane be hydrophilic on the spot. If it is not used immediately after the hydrophilic treatment, the Inner Mongolia wastewater treatment should be sealed and packaged, keeping warm to keep the membrane silk moist, and prevent it from being hydrophilic and cleaning. The diaphragm is frozen.

All products or equipment should be thoroughly inspected in accordance with the bill of lading at the place of delivery, and brutal loading and unloading is strictly prohibited. If there is any damage, component shortage, or discrepancy with the documents, please contact our company immediately.

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Keywords: Inner Mongolia wastewater treatment equipment , Inner Mongolia wastewater treatment equipment , Inner Mongolia wastewater treatment how much money

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