SHENHUA MONGOLIA GUOHUA HULUNBUIR ELECTRIC POWER CO.,LTD.
Location: China
Total capacity of water treatment system: 340 m3/hr permeate
Feed water sources: surface water
Water treatment process: UF+RO +IX
Treated water application: Boiler feed water
Challenge: High iron scaling, high organic fouling and high biofouling potential
System operation time: Since 2013
1. Introduction
The power plant needed 8160 ton of water daily to meet the demand of boiler make up water . The raw water source comes from surface water with high level of organic and biofouling and iron scaling potential.
GPF8112 and antiscalant Checkmate CPE11000 are continuously dosed. A non oxidizing biocide TBC9527 is continuously dose to prevent organic and biofouling in the system.
Table 1: Summary of Chemical Dosing
| Chemical Name | Type | Dosage (mg/l) | Dosing Method |
| Flocculant | GPF8112 | 1.3 | Continuous dosing |
| Antiscalant | Checkmate CPE11000 | 0.37 | |
| Non oxidizing biocide | TBC9527 | 3 |
Table 2: Contains average data performance for UF from 2013-2015
| UF Operation Data | ||||
| Date | pressure (MPa) |
Product water yield m3/h |
Turbidity NTU |
|
| feed | product | |||
| 2013.08.26 | 0.1 | 0.06 | 90 | 0.15 |
| 2014.05.12 | 0.1 | 0.06 | 88 | 0.36 |
| 2015.01.15 | 0.09 | 0.06 | 85 | 0.22 |
| 2015.12.20 | 0.09 | 0.06 | 86 | 0.28 |
Table 3: Contains average RO operation data from year 2013 -2015
| RO Operation Data | |||||||
| Date | pressure (MPa) | Flow (m3/h) | Conductivity (μs/cm) | ||||
| feed | Interseg. | concetration | product | concetration | feed | product | |
| 2013.08.26 | 0.8 | 0.72 | 0.66 | 85 | 28.6 | 690 | 10.2 |
| 2014.05.12 | 0.8 | 0.7 | 0.65 | 85 | 29.1 | 688 | 9.7 |
| 2015.01.15 | 0.74 | 0.69 | 0.62 | 80 | 27 | 473 | 7.1 |
| 2015.12.20 | 0.77 | 0.7 | 0.64 | 82 | 28 | 486 | 7.8 |
CONCLUSION
The system operation is very stable and operates without any scaling or fouling. The cleaning frequency of the RO system is every 12 months. Our client is very happy with all the chemicals provided by Ochemate Advanced Material Technology is helping them to save time and money by having a continuous RO plant operation with minimal downtime.
