Reagents - ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual

The STP PLC is programmed to:
Receive analogue and digital input signals from the switches and transmitters being controlled;
Process the information using the structure and rules entered into the program;
Generate outputs that control the equipment - turn equipment OFF or ON.
Generate alarms if critical conditions are present
Provide a HMI (Human Machine Interface) touch-screen for use of operator process monitoring
and control.
More information are provided in the Operation and Maintenance Manual in Appendix.
3.5

REAGENTS

Some chemicals are required for treatment operation and also for Membrane cleaning. Chemicals will
be used according to the MSDS recommendation. MSDS are provided in Appendix. Table 3 presents
the estimated chemical consumption per year.
Table 3: Chemical consumption
Consumable
Purpose
Supplemental Alkalinity
Phosphorus Removal
Nitrate Removal
Membrane Cleaning
Sodium Carbonate (Soda Ash) is used for pH adjustment in case there is a deficiency in alkalinity in
influent sewage and pH drops. It is hazardous in case of skin contact (irritant), of eye contact (irritant),
of ingestion, of inhalation (lung irritant).
Sodium hypochlorite (NaOCl) and Citric Acid (C
Sodium hypochlorite is a common disinfectant, which can be an irritant or corrosive, depending
on its concentration. It cannot be mixed with organics, ammonia compounds or acids. Contact
with acids produces highly toxic chlorine gas. It has to be mixed only with pure water.
Citric Acid is hazardous in case of skin contact (irritant, sensitizers), or ingestion, eye contact
(irritant) and inhalation (lung irritants).
Aluminum Sulfate (Al (SO
2
from unprotected contact. Aluminum is very poorly absorbed through the skin and toxic effects would
not be expected following short-term skin contact. Inhalation of mists can be irritating to the respiratory
tract and lungs.
MicroC 2000 is used for nitrate removal. Exposure to eyes may cause slight irritation. Exposure to Skin
may cause slight irritation. Inhalation of high mist concentrations may cause irritation of respiratory
tract.
Name
Dry Soda Ash
Liquid Alum, 48%
MicroC 2000
Sodium Hyprochlorite, 12%
6
) ) is used for Phosphorus Removal. Mild to moderate irritation can occur
4 3
Operation & Maintenance Manual
Usage Rate
Value Unit
6.28 kg/d
14.6 L/d
16.5 L/d
- L/d
H O ) are used for cleaning the membranes.
8 7
Sewage Treatment Plant
December 2018
Value Unit
2292 Kg/year
5346 L/year
6025 L/year
150 L/year
22