Water Treatment Method and Principle of Sediment Filtration
The purpose of the precipitation filtration process is to remove suspended particulate matter or colloidal matter from the water source. If this particulate matter is not removed, it will damage or even block the waterway to other precise filtration membranes of dialysis water.
The method of precipitation filtration is an old and simple method of water purification, so this step is usually used for the preliminary treatment of water purification. If further processing is required, several filters are added to the pipe to remove large amounts of impurities.
There are many types of filters for filtering suspended particulate matter, such as mesh filters, sand filters (such as quartz sand, etc.) or membrane filters. As long as the particle size is larger than the size of these holes, it will be blocked.
For ions dissolved in water, the filter cannot be stopped.
If the filter is not replaced or cleaned for too long, more and more particulate matter will accumulate on the filter. Water flow and water pressure will gradually decrease.
People used to determine the degree to which the filter was blocked by the difference between the inlet pressure and the outlet pressure. Therefore, the filter should be reversed periodically to eliminate impurities accumulated on it. Also, the filter should be replaced at a fixed time.
Another problem with the sediment filtration method is noteworthy.
Because the particulate matter is constantly blocked and accumulated. These substances may contain bacteria that multiply here and release toxic substances through the filter, causing a pyrogen reaction.
Therefore, the filter should be replaced frequently. When the pressure drop between the inlet and outlet waters is increased by a factor of five, the filter needs to be replaced.
In addition to replacing the filter, some corrosion inhibitors and fungicides should be added to purify the water.
Long-term use of fungicides can affect the bactericidal effect of microbial resistance. In order to effectively control microorganisms and biological sludge, the amount is frequently alternately increased and various fungicides are added to maintain the water treatment effect.
Oxidative and non-oxidizing biocides have been used interchangeably in water treatment systems. Non-oxidative biocides are more convenient and effective in some respects.
In their recent developments and applications, synergies are sought, the main direction is the combination of the killing power of the two drugs rather than the killing ability of a single agent.
The corrosion and scale inhibitor are compounded by an organic phosphonic acid, a polycarboxylic acid, a carbon steel corrosion inhibitor, and a copper corrosion inhibitor. It has a good chelation and dispersion effect on calcium carbonate, calcium sulfate and calcium phosphate in water, and has good corrosion inhibition effect on carbon steel and copper.
A combination of methods can be used to maximize productivity. For questions regarding water treatment chemicals, please contact us.