Dosing method, dosage calculation, and examples of scale inhibitors

1、 Recommended dosing concentration

The recommended dosage concentration of reverse osmosis scale inhibitor is 3-5 ppm

The recommended dosage concentration of ultrafiltration scale inhibitor is 1.5-3.5ppm

Ppm refers to mg/L

2、 Calculation of dosage

Dosing amount of agent (kg)=[Water inflow F (m3/h) * Dosing concentration S (ppm) * Starting time T (h)]/1000

3、 Dosing method

1. Preparation work:

Firstly, clean the dosing system (mainly the dosing box, dosing pump, and dosing pipe) to ensure the cleanliness of the dosing system and the smooth addition of chemicals into the system.

2. Preparation of reagents

Add the medication to the dosing box and dilute it no more than 8 times. For example, add 25 kilograms of reverse osmosis agent to the dosing box, and then add 125 kilograms of reverse osmosis product water. At this time, the amount of agent prepared in the dosing box is about 150L; At this point, the dilution ratio is 6 (150/25=6).

The amount of medication to be dispensed at a time depends on the specific size of the dosing box. It is generally recommended that the medication dispensed at a time can be used for 5 to 7 days. If the time is too long, the dosing box may be contaminated, and the time is too short. Frequent dispensing can bring unnecessary trouble to actual operations.

3. Adjust the flow rate of the dosing pump to ensure that the amount of medication added per minute meets the needs of the system. Water inflow F (m3/h); The dosage concentration of scale inhibitor S (ppm) is W (g)=F (m3/h) * S (ppm)/60 (min/h). When preparing chemicals in the dosing box, the dilution ratio is N (5=

4、 Practical cases

Case:

Calculation steps:

1. Scale inhibitor inlet water: 2.5T/H

2. Add 2KG of scale inhibitor to every 100 barrels, with a dilution concentration of 2kg/100L=20g/L Flow rate of dosing pump: 3.8L/H

4. Dosing concentration of scale inhibitor: 2ppm (ppm=g/T)

5. The dosage of scale inhibitor stock solution per hour is: 2.5T/H X 2g/L=5g/H 6 The volume of hourly metering pump dosage is: (5g/H)/(20g/H)=0.25L/H 7 Regulation of scale inhibitor dosing pump (frequency): (0.25L/H)/(3.8L/H) X 100%=6.5%

The above is the "Dosing Method, Dosing Calculation, and Example of Scale Inhibitors" that Hongjie Water brings to you. We hope it can help you!

Shenzhen Hongjie Water Technology Co., Ltd. is an integrated high-tech enterprise specializing in product research and development, production, sales, engineering design, installation and debugging, technical consulting, and sales of supporting materials in the fields of industrial water treatment and drinking water treatment. Our main products include the design, manufacturing, installation, debugging, and maintenance of water treatment equipment, including pure water equipment, ultra pure water equipment, reverse osmosis equipment, GMP purified water equipment, EDI deionized water equipment, domestic sewage equipment, industrial wastewater equipment, softened water equipment, and reclaimed water reuse equipment, all of which are integrated into an environmentally friendly high-tech manufacturer.