Mbr membrane manufacturer solve MBR membrane What are the ways to block

With the continuous improvement of water treatment technology, The application of MBR membrane is also increasing. Because there are many MBR membrane manufacturers in the sales market, the product quality of MBR membrane is also uneven. For some customers, MBR membrane is very easy to be blocked Mbr membrane manufacturer Let's share the solution MBR membrane blocking mode,

1. Strengthen preparatory treatment.

Preparatory treatment MBR film processing technology is important. Because there are many residual chemical fibers and suspended solids in the wastewater, the membrane surface will be blocked after a long time of use, thus reducing the total area of membrane permeability and causing membrane environmental pollution. The preparatory treatment is to install a fine screen less than 1mm; Install a fine screen on the flow measurement of the microbial tank; Install the fine screen in the membrane cell.

2. Physical cleaning.

Clean by manpower, mechanical equipment or clean water tank MBR membrane. The common method is online backwashing. On line cleaning: water backwashing is carried out for the membrane every day. The working pressure of backwashing exceeds 0.1MPa. The backwashing time is specified according to the regulations of the MBR membrane manufacturer. The membrane water output for backwashing water.

3. Organic chemical cleaning. The MBR membrane was soaked and cleaned with chemicals.

Online cleaning: to increase For the cleaning cycle time of MBR membrane, the interval of 3-6 days can be considered. During backwashing, quantitative analysis NaClO and HC1 are added respectively to carry out online organic chemical backwashing. Each backwashing lasts for 3-5 minutes. After the drugs are backwashed into the membrane, they are placed for 20-30 minutes before the funds are put into normal water output. In the whole process of cleaning, hydrolysis acidification tank is required continuously.

Offline cleaning: when the actual operating negative pressure exceeds When 0.05MPa, MBR membrane shall be cleaned offline immediately. The cleaning method is to MBR diaphragm Take it off the membrane shelf, clean the membrane surface with clean water, and remove the adhesion on the membrane surface by activated sludge method; Then quantitative analysis of NaClO and quantitative NaOH aqueous solution are used for soaking respectively to kill bacteria adhering to the membrane surface, and remove organic compounds and colloidal solution chemicals adhering to the membrane surface; Then clean the membrane surface with clean water. After the membrane is loaded into the membrane tank, the membrane can be backwashed for 2-3 minutes, and the MBR membrane transmissivity can be repaired.