Waste & Wastewater Treatment Division PowerPoint
Waste & Wastewater Treatment Division PowerPoint Version
Download the zipped/compressed PowerPoint version.
Water and Wastewater Treatment Division PDF
List of problems caused by impurities in water
Problems:
- Carryover of feedwater into stream, produce Carbon Dioxide in stream leading to formation of carbonic acid (acid attack)
- Primary source of scale in heat exchange equipment.
- Causes boiler and water line deposits.
- Corrosion of water lines, boiler, return lines, heat exchanger equipments, etc. (oxygen attack).
- Corrosion occurs when pH drops below 8.5
- Corrosion
- Scale in boilers and cooling water systems
Common chemical treatment method
- Neutralizing amines, filming amines, combination of both and lime-soda.
- Lime softening, phosphate, chelates and polymers.
- Phosphate, chelates and polymers
- Oxygen scavengers, filming amines and deaeration.
- pH can be lowered by addition of acids and increased by addition of alkalies
- Chlorination
- Lime softening
FOR BOILERS
Basic Boiler System Schematic.
BOIL KLIN S
Boiler water treatment. Scale & corrosion inhibitor
FOR COOLING TOWERS
The big picture of cooling tower water treatment chemicals is the control of scale, corrosion, microbiological activity, and foaming. Scale can lead to heat exchanger inefficiency, plugged tubes, inadequate flow, and underdeposit corrosion. Corrosion can reduce the operating life of cooling equipment and increase maintenance costs. Microbiological activity can lead to reduced heat exchanger efficiency, plugged tubes, inadequate flow through the cooling tower fill, under-deposit corrosion, etc.
Typical cooling tower treatment chemicals are listed below:
- Biocides: for microbiological control.
- Oxidizing biocides (bleach, bromine, chlorine gas, BCDMH, calcium hypochlorite, chlorine dioxide, hydrogen peroxide, iodine, ozone) or our patented BIOXY S
- Nonoxidizing biocides (isothiazolin, gluteraldehyde, DBNPA, MBT) or our unique POLY QUAT
- Scale Inhibitors: to protect heat transfer surfaces and cooling system from scale.
- Phosphates (sodium tripolyphosphate, sodium hexametaphosphate, TKPP)
- Phosphonates (HEDP, AMP, PBTC)
- Polymers (polycarboxylates, polyacrylates, polymaleic acid, maleic anhydride copolymer, acrylate/AMPS copolymer, acrylate/AMPS/sulfonated styrene terpolymer, acrylate/sulfonic acid/nonionic terpolymer) – many are dispersants too.
- Corrosion Inhibitors: to protect metal surfaces from corrosion.
- Phosphates (orthophosphate, sodium tripolyphosphate, sodium hexametaphosphate, TKPP)
- Phosphonates (HPA and others)
- Zinc
- Silicates
- TT (Tolyltriazole – for yellow metals)
- BZT (Benzotriazole – for yellow metals)
- Molybdate
- Antifoams: surface-active chemicals that reduce foaming.
- Silicone and non-silicone blends
COOL T KLIN
Diverse anti-corrosion agents to provide corrosion protection in the cooling tower.
CLOSED LOOPS
For closed loops, the big picture of water treatment chemicals is to control corrosion and microbiological activity. Corrosion can lead to equipment failure and increased maintenance costs. Microbiological activity can lead to reduced heat exchanger efficiency, plugged tubes, and under-deposit corrosion.
Typical closed loop treatment chemicals are listed below:
- Corrosion Inhibitors: to protect metal surfaces from corrosion.
- Nitrites
- Zinc
- Silicates
- TT (Tolyltriazole – for yellow metals)
- BZT (Benzotriazole – for yellow metals)
- Molybdate
- Sulfite
- pH control (caustic, borates, etc.)
- VpCI (Volatile Phase Corrosion Inhibitors)
- Biocides: for microbiological control.
- Nonoxidizing biocides (isothiazolin, gluteraldehyde, DBNPA, MBT, POLY QUAT)
FOR MICROBIAL CONTROL IN WATER AND WASTEWATER
BIOXY S new
Formulated to sanitize surfaces in contact with food and reservoirs.
POLY QUAT
Water treatment quarternary biocides.
OXY CHLOR 12
Chlorine based sanitizer.
ATO SAN
Controls bacteria and algae in industrial recirculating water cooling towers.
FOR RO MEMBRANE
EQUATION RO
Prevents scale and sludge formation.
FOR DESCALING
DE SCALE
Hydrochloric acid based descaler with corrosion inhibitor.
CLR NF
Non-foaming acidic cleaner.
SAFE ACID NF
A non-foaming organic acid based cleaner. Phosphate free
FOR OIL AND PETROLEUM REMOVAL
OIL RID
Oil spill remover.
FOR ODOR CONTROL AND BIODEGRADATION
BACT O MAX
Ideal for aqua culture and aquarium.
ATO BCP
Enhances water biology in aquaculture lagoons.
FOR SCALE AND CORROSION INHIBITION
CORROSION FREE
Contains diverse anti-corrosion agents and neutralizing amines.
PREVENT
A corrosion inhibitor product to provide corrosion protection in various systems.
POLYMERS FOR WATER AND WASTEWATER TREATMENT
ATO PAC
A high performance liquid Polyaluminum Chloride Coagulant.
ATO ALUM
Aluminum sulfate coagulant for potable, waste & water treatment.
ATO FLOCS flocculants
Emulsion Polyacrylamide (PAM), cationic RETENTION AID.
ATO FLOC CP 413
Cationic acrylamide copolymer retention aid.
ATO FLOC 919
Anionic acrylamide copolymer.
ATO FLOC DADMAC
A high charge cationic, medium molecular weight polymer in liquid form.
FOR DUST CONTROL
DUST SUPPRESSANT
A polymer dust suppressant.
FOR H2S & ANAEROBIC MALODOR CONTROL
NT PRODUCT
An environmentally benign, non-toxic and non-biocidal liquid for odor control. Biotechnology based & eliminates VFAs and H2S