The dry film of the RO film can also be cleaned! After washing, the water output is higher than the new film by 20%! After cleaning, the nanofiltration membrane is higher than the new membrane by 40%! The conductivity can be washed off! After cleaning, the membrane blocking resistance is more than one-half longer than the new membrane, and the Zui high value is tripled! The film can be washed frequently, and it will not be used for a long time, and the consumables will become durable goods. This is the reason for the rise of biological cleaning, breaking through the traditional cleaning methods, bringing great benefits to the majority of water companies. Bio-technical cleaning is a thorough cleaning of the membrane tissue by biological agents. There is no chemical agent in the whole process, no film is damaged, the membrane can be protected, the membrane function can be restored, the membrane tissue can be repaired, and a synovial membrane can be produced on the membrane tissue to reduce the conductance. Rate, recovery and increase the amount of water, prolong the anti-blocking time and other subversive common sense effects.

Membrane cleaning time: When the water output drops to about 50%, it should be cleaned. At this time, the use efficiency of the membrane is low and the water production cost is high. There is no relationship between whether the membrane is cleaned and the conductivity is low, and the conductivity is low. Timely cleaning, the conductivity will continue to increase, increasing the difficulty of cleaning leads to the film zui after the waste.

Reasons for the increase of membrane conductivity: First, the membrane is blocked by chemical immersion and rinsing. No matter strong acid or weak acid, the membrane tissue will be destroyed, the conductivity will be high once, and the conductivity will suddenly increase to dozens after washing several times. Hundreds of phenomena. Second, chlorine-containing tap water, or the addition of chlorine dioxide during the process of water production, will increase the electrical conductivity of the membrane structure. Third, the membrane block is not cleaned in time and the pressure is increased to make the membrane pores expand and the conductivity is improved. It is often the case that the pressurized water output is high and the conductivity is high, the normal water pressure and water conductivity are low, and the water output is not enough. Continuous pressurization of water allows the conductivity to increase.

The amount of water after biological cleaning: Due to the thorough cleaning, the amount of water is three conditions of membrane flux. We set the water output of the new membrane to 100%. 1. Most of the membranes have a water output of 100% after washing. 2. There are many membranes that are higher than one hundred percent, and the high value of zui can reach 120% conductivity remains unchanged. 3. After washing the water of Zina with less than 40% of the water, the amount of water after washing is about 70%. After using for a period of time, the amount of water will gradually recover by 100%. If it cannot be recovered, the film will drop after use. After a second cleaning of about 50%, the membrane flux will return to 100%.

Bio-cleaning dry film 1: Generally, the cleaning effect of the dry film is determined according to the weight of the film and the amount of water discharged. Imported film below 16 kg, domestic film below 14 kg, can also be cleaned in the case of water, cleaning will achieve two effects. 1' 90% of the total water output can be restored to 100%; 2, 10% of the possible water output is about 70%. After dry film cleaning, the general conductivity will be around 50, but after one month of use, the conductivity will drop by more than half.

Bio-cleaning dry film 2: 70% of the film is discharged after washing, and there are two cases during use; 1. The water output is restored to 100%. 2, the amount of water does not change, such a membrane when the water output is reduced to about 50% after cleaning, the incident will return to 100% or even 120%.

Anti-blocking properties of the membrane after washing: After biological cleaning, a synovial membrane is formed on the membrane tissue. It is good for backwashing after the end of water production every day, and the obstruction is easy to discharge, and the anti-blocking time of the membrane is increased by more than one-half. That is to say, if the new membrane is blocked for one year, the membrane after cleaning will be blocked for one year and a half. The blocking resistance is increased by three times.

Membrane service life after biological cleaning: Because of the biological cleaning and repairing effect, the membrane conductivity remains unchanged for each cleaning, and the water output is restored to 100%, so the biological cleaning can be carried out indefinitely, as long as the water output drops to 100%. After cleaning for about 50, the film can be washed frequently, and it will not be used for a long time.