Technical assistance: Raw water analysis project for chemical enterprises
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This post was last edited by hesonchang214 on 2010-4-24 at 15:05. The water treatment plant for our new coal chemical project is providing the basic design data; I’m wondering what are the analysis items required for the raw water in chemical enterprises? Please ask an expert to explain. Thank you!
pH, suspended solids, hardness, turbidity, conductivity
This post was last edited by Liu Suifeng on 2010-4-26 at 18:39. It is necessary to consider different seasons or months, and collect water quality analysis data from multiple times; if the water is intended for use in subsequent desalination stations, a comprehensive water quality analysis must be conducted. Take a look at the design specifications for chemical water, or those for desalinated and softened water.
Project Name: Thermal Power Plant of XXXXXXXX Co., Ltd.
Analysis Number: 2#
Water Sampling Location: XXXXXX
Sampling Site
Temperature at Time of Sampling: °C
Date of Sample Submission: February 2, 2004
Water Temperature at Time of Sampling: °C
Date of Report: February 11, 2004
Type of Water Sample: Surface water
Odor, Color, Turbidity: 3.00
Taste, Specific Gravity, Suspended Solids: 16.25 (mg/l)
Chemical Analysis – Specific Items
Analysis Item, mg/L, mmol/L, %
CaCO3: 1 mg/L
Cations
K+: 9.04, 0.23, 2.23
Total Hardness: 240.86
Na+: 121.65, 5.29, 51.21
Permanent Hardness: 119.76
Ca2+: 41.71, 2.08, 20.14
Temporary Hardness: 121.10
Mg2+: 33.20, 2.73, 26.43
Negative Hardness: Fe2+: 0, 0, 0
Total Alkalinity: 121.19
Fe3+: 0, 0, 0
Acidity
Al3+: 0, 0, 0
pH Value: 8.4 (no unit)
NH4+: 0.01, 0, 0
Ba2+: 0, 0, 0
Sr2+: 0.24, 0, 0
Milligrams per Liter in Water
Total Dissolved Carbon Dioxide: 205.61
Dissolved Carbon Dioxide due to Erosion: 10.33
Total Suspended Solids: 100.01
Anions
Cl−: 199.62, 5.63, 54.82
Soluble Silicon (SiO2): 5.6
SO42−: 104.14, 2.16, 21.03
Oxygen Demand: 5.87
HCO3−: 147.77, 2.42, 23.56
Dissolved Oxygen: 0
CO32−: 0, 0, 0
Dissolved Solids: 661.00
F−: 0.7, 0, 0
Total Solids: 0
NO2−: 0.08, 0, 0
Residue on Ignition: 0
NO3−: 3.70, 0.06, 0.58
Loss on Ignition: 0
PO4−: 0.05, 0, 0
Total Silicon: 455.36, 10.27, 99.99
Mineralization: 587.88
Analysis Number: 2#
Water Sampling Location: XXXXXX
Sampling Site
Temperature at Time of Sampling: °C
Date of Sample Submission: February 2, 2004
Water Temperature at Time of Sampling: °C
Date of Report: February 11, 2004
Type of Water Sample: Surface water
Odor, Color, Turbidity: 3.00
Taste, Specific Gravity, Suspended Solids: 16.25 (mg/l)
Chemical Analysis – Specific Items
Analysis Item, mg/L, mmol/L, %
CaCO3: 1 mg/L
Cations
K+: 9.04, 0.23, 2.23
Total Hardness: 240.86
Na+: 121.65, 5.29, 51.21
Permanent Hardness: 119.76
Ca2+: 41.71, 2.08, 20.14
Temporary Hardness: 121.10
Mg2+: 33.20, 2.73, 26.43
Negative Hardness: Fe2+: 0, 0, 0
Total Alkalinity: 121.19
Fe3+: 0, 0, 0
Acidity
Al3+: 0, 0, 0
pH Value: 8.4 (no unit)
NH4+: 0.01, 0, 0
Ba2+: 0, 0, 0
Sr2+: 0.24, 0, 0
Milligrams per Liter in Water
Total Dissolved Carbon Dioxide: 205.61
Dissolved Carbon Dioxide due to Erosion: 10.33
Total Suspended Solids: 100.01
Anions
Cl−: 199.62, 5.63, 54.82
Soluble Silicon (SiO2): 5.6
SO42−: 104.14, 2.16, 21.03
Oxygen Demand: 5.87
HCO3−: 147.77, 2.42, 23.56
Dissolved Oxygen: 0
CO32−: 0, 0, 0
Dissolved Solids: 661.00
F−: 0.7, 0, 0
Total Solids: 0
NO2−: 0.08, 0, 0
Residue on Ignition: 0
NO3−: 3.70, 0.06, 0.58
Loss on Ignition: 0
PO4−: 0.05, 0, 0
Total Silicon: 455.36, 10.27, 99.99
Mineralization: 587.88
For use as make-up water in closed-loop systems, the parameters that need to be monitored include pH, turbidity, calcium ions, magnesium ions, alkalinity, chloride ions, COD, conductivity, sulfate ions, and iron. If it is used in conjunction with a desalination plant, then the salt content, as well as levels of lead, barium, arsenic, and other substances, also need to be considered.