What are the Troubleshooting of the Reverse Osmosis System?
Jul. 08, 2021
As a Water Analysis Integration Platform Manufacturer, share with you.
There are three main types of failure phenomena of reverse osmosis systems: reduced water permeability, increased salt permeability, and increased pressure drop. Failure of the reverse osmosis system will result in a decrease in the desalination rate and a decrease in product water volume. If two or one of them Slowly reduce, it may be a common phenomenon caused by dirt or scale. The problem can be solved by cleaning the reverse osmosis system.
Reverse Osmosis System Industrial Water Treatment
1. Assess mechanical and chemical problems in reverse osmosis systems
The mechanical problems of the reverse osmosis system are mainly O-ring damage, salt water seal damage, pump damage, pipeline and valve damage, and inaccurate instruments. The chemical problem of the reverse osmosis system is the improper addition of acid. A high dose of acid will damage the membrane or cause sulfate-based fouling, and a low dose will cause carbonate or metal hydroxide-based fouling or pollution; Improper addition of scale agent, high dosage may cause pollution, low dosage may cause scaling.
2. Identify contaminants in reverse osmosis systems
One is to analyze the inorganic components of the feed liquid, brine and product liquid, total organic carbon (TOC), turbidity, pH, TDS, total suspended solids (TSS), SDI and temperature, including the determination of SDI, TSS and turbidity It can provide the basis for particulate matter pollution. TOC measurement can predict the pollution tendency of organic matter; the second is to immerse and analyze the reverse osmosis system feed liquid cartridge filter or SDI filter pad.
3. Reverse osmosis system to verify instrument operation
Including pressure gauges, flow meters, pH meters, conductivity meters, thermometers, etc., recalibrate if necessary.
4. Analyze the changes in the chemical conditions of the feed water in the reverse osmosis system
Comparing the current feed water analysis with the design benchmark data, changes in the feed water chemical conditions will generate the need to add pretreatment or update the original pretreatment equipment.
5. Recheck the operating data of the reverse osmosis system
Check the changes in operating records, flux and desalination rate, and consider the effects of temperature, pressure, feed water concentration, and membrane age on yield and desalination rate.
6. Choose a suitable cleaning solution for the reverse osmosis system
In the selection of the cleaning plan, the following factors should be considered: the type of membrane and the compatibility of the cleaning agent, the requirements of the cleaning equipment, the structural materials of the system, the identification of pollutants, etc.
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