Reverse osmosisAfter the equipment has been running for a certain period of time,The conductivity of the effluent will increaseEven ifThe conductivity of the effluent from the reverse osmosis membrane that has just been replacedIt's also biased.highVery muchWhen discharging water from two-stage reverse osmosis,The secondary conductivity is even higher than the primary conductivity,What are the reasons for these?Now let's talk about the factors that can cause the conductivity of the effluent from reverse osmosis equipment to increase.

1,Reverse osmosisEquipmentLong operating life

With the extension of the operating life of the membrane element,The salt permeability increases,Under normal circumstances,High electrical conductivity refers to the entire water treatment system compared to its initial state,There has been no change The reason for the high conductivity at this time is the aging of the reverse osmosis membrane module, which leads to a decrease in the desalination rate,The correct handling method is to replace the reverse osmosis membrane of the reverse osmosis main unit.

2The connecting parts are leaking

The electrical conductivity of the equipment suddenly increased while it was operating normally,The displacement has increased. This situation is caused by the leakage of the connection sealing ring of the reverse osmosis membrane module, resulting in a sharp increase in conductivity,It is recommended to replace the sealing ring. The specific method is to test the water quality of each membrane module,Locate the leaking part and replace it.

3The performance of the membrane element has declined

Membrane element scratches, membrane oxidation, chemical cleaning damage, etc. The water output of the equipment remained unchanged after running for a period of time,The electrical conductivity increases,The displacement has increased. It indicates that the film is degraded by oxidizing media,The electrical conductivity increases,The membrane module needs to be replaced.

4There is a large amount of gas dissolved in the water

When the equipment is turned on, the secondary conductance rises and is difficult to decrease or takes too long to decrease,This situation is generally common in two-stage reverse osmosis,Between the first and second levels, sodium hydroxide is generally added to regulate the amount of carbon dioxide removed from the water,The addition amount of sodium hydroxide is related to the electrical conductivity,It is recommended to adjust the addition amount.

5The water conductivity of the incoming water increases

The increase in the conductivity of the influent water directly leads to the increase in the conductivity of the produced water,Or the conductivity meter may be damaged due to errors, etcIt should be inspected.

6.Scaling pollution

Excessively high recovery rate, deteriorating water quality, poor quality of scale inhibitors, and unreliable addition of scale inhibitors, etc.

7.The temperature rises

As the temperature rises, the salt permeability increasesThis is an easily overlooked factor that causes the conductivity of the effluent from reverse osmosis equipment to increase.

8.Organic pollution

Pollution, colloid pollution, insolubleNOMPollution, organic pollution, etc.

9.pHAbnormal value

pHExcessively high or low values will seriously affect the desalination rate of membrane elements.

10.Extremely high pressure

Ultra-high pressure operation increases the salt permeabilityThe operating pressure should be adjusted appropriately.

 The above isCause reverse osmosis equipmentEffluentIf you encounter any operational issues with reverse osmosis equipment due to increased conductivity, please consult Beijing Yuanlai Water Treatment Equipment Co., LTD., which focuses on the water treatment industry15In this year, you can trust us!