2021-12-20
Why can't high lift pumps be used at low lift?
Reasonable selection of water treatment equipment is the knowledge that every designer needs to master. As the core equipment of transportation and lifting, pumps are everywhere in water treatment projects. Therefore, how to select the pump is also very important! Usually, when selecting the type of...
2021-12-16
How can water molecules with the size of 0.324nm pass through the RO membrane with the size of 0.1nm
We all know that the filtration accuracy of RO membrane is 0.1nm (i.e. 0.0001) μ m) It can filter out bacteria, heavy metals and plasma in water.
Then the problem comes. Benzene molecules can be killed at about 0.5nm and Ca + ions can be killed at about 0.3nm. We can fully understand it.
But w...
2021-10-29
[practical] common installation errors of vertical multistage centrifugal pump
If the vertical multistage centrifugal pump is installed carelessly, it will lead to the failure of installation, which will affect the working performance of the pump in the future. Next, we will analyze the common installation errors and relevant solutions of vertical multistage centrifugal pump.
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2021-10-28
Have you mastered the fault analysis and solutions of 24 kinds of pressure transmitters in 8 categories?
When the pressure transmitter is installed on site, there are many phenomena that the relevant pressure and differential pressure transmitters reflect incorrect process parameters: there are problems of blockage of impulse pipe, non-standard installation of throttling device, condensate tank and imp...
2021-10-25
Pump | 148 technical Q & A highlights about pump
Pump is a necessary and common equipment in water treatment engineering. This knowledge and experience is very important. This article is a collection of 148 technical questions and answers about pump compiled by an engineer who has worked for 19 years. Dry goods are practical!
1. What is a pump?
...
2021-10-23
[water knowledge] Introduction to various indexes of reverse osmosis membrane
1. Desalination rate and salt permeability of reverse osmosis membrane
Salt transmittance = produced water concentration / influent concentration × 100%
Desalination rate = (1 – salt content of produced water / salt content of influent) × 100%
Salt penetration rate = 100% &ndash...
2021-10-18
Do you have any operation specifications for the storage, rewetting and cleaning of membrane components?
In order to prevent the growth of organisms on the membrane surface during storage and the degradation of performance in subsequent operations, the membrane elements must be stored in a special solution.
New module:
(1) The membrane elements have been tested with water before leaving the factory, ...
2021-10-12
What problems should we pay attention to in order to ensure the normal operation of reverse osmosis equipment
Reverse osmosis membrane separation technology (RO Technology for short) is a new and practical water treatment technology. For a specific reverse osmosis system, the long-term stability of its performance is indispensable. The success of long-term performance of reverse osmosis system depends on no...
