Dynamic evaluation device and method for scale inhibition performances of reverse osmosis scale inhibitors

Abstract

The invention discloses a dynamic evaluation device and method for scale inhibition performances of reverse osmosis scale inhibitors. The dynamic evaluation device is characterized in that a water outlet pipeline of a raw water tank is connected to the water inlet end of a self-cleaning filter through an ultrafiltration water pump, in the water outlet pipeline of the self-cleaning filter, an ultrafiltration membrane, an ultrafiltration water tank, a reverse-osmosis low-pressure pump, a reverse osmosis cartridge filter, a reverse-osmosis high-pressure pump and a reverse osmosis membrane are sequentially arranged in series from a water outlet of the self-cleaning filter, one path of a water producing hole of the reverse osmosis membrane is connected to a total reflux inlet A, and the other path of the water producing hole of the reverse osmosis membrane is connected to a water collecting tank, one path of a concentrated water hole of the reverse osmosis membrane is communicated with the total reflux inlet A, and the other path of the concentrated water hole of the reverse osmosis membrane is connected to the water collecting tank; and the total reflux inlet A is connected with the ultrafiltration water tank to form reflux. The device and the method can determine the maximal yield of a reverse osmosis system under determined evaluation conditions, determine the advantages and disadvantages of the scale inhibition performances of the different scale inhibitors under the same operation condition, and determine the scale inhibition performances of the scale inhibitors on different scaled materials.

Description

technical field [0001] The invention relates to a dynamic evaluation device and evaluation method for anti-scale performance of a reverse osmosis anti-scale agent. technical background [0002] At present, reverse osmosis RO technology is widely used in the field of water treatment due to its outstanding advantages such as low energy consumption, easy operation, small system footprint, and good operating economy. However, the membrane fouling problem of the reverse osmosis system is a long-term impact An important issue in the safe operation of reverse osmosis systems. The method of adding antiscalant to prevent and control the fouling of reverse osmosis membrane plays an important role in the operation of reverse osmosis. [0003] There are mainly two types of evaluation methods for reverse osmosis antiscalants widely used at present. One is static antiscalant performance evaluation, including static antiscaling method, limit carbonate hardness method, bubbling method, tur...

AI Technical Summary

Problems solved by technology

[0002] At present, reverse osmosis RO technology is widely used in the field of water treatment due to its outstanding advantages such as low energy consumption, easy operation, small system footprint, and good operating economy. However, the membrane fouling problem of the reverse osmosis system is a long-term impact Important Issues in Safe Operation of Reverse Osmosis System

However, none of the existing methods can simulate the actual operating conditions of the reverse osmosis system, and the considerations are relatively single, and there is a certain deviation from the actual operation.

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