Chemical Reaction Tanks, pH Conditioning and Serpentine Mixing System. sections
Most wastewater applications require chemical pretreatment to break the emulsions caused by chemical cleaners/surfactants/sanitizers or mechanical mixing. Breaking the emulsion will improve TSS, FOG and BOD removal efficiencies from the wastestream.
Ellis offers two different technologies where the chemicals can react with the wastewater to provide chemical demulsification which allows the pollutants to chemically separate from the water. Ellis offers two solutions to that provide contact time and mixing energy that allowing treatment chemicals to react with the wastewater.These include Chemical Reaction Tanks (CRT) and Serpentine Mixing System (SMS).
CHEMICAL REACTION TANKS
This chemical reaction systems are designed to work with your chemical treatment program. Chemical Reaction Tanks come in various sizes (diameter, length, width, height, flat or cone bottom) in carbon steel and stainless steel. Included with mechanical mixing using impeller agitation to provide mixing energy.
HOW IT WORKS
Wastewater is pumped into the chemical reaction tank. Most tanks are designed with two chambers and others may have two to four chambers based on the customer’s chemical treatment program.
In most two chamber reaction tanks, the coagulant, pH adjustment, and coagulant aid chemicals are added into the first chamber and react for a five-minute time period. Mechanical action is provided using a mixer and with an impellor to blend the chemicals with the wastewater. In the second chamber, flocculant is added to the coagulated wastewater to provide chemical reaction for a ten-minute period. This mixing energy is reduced so the flocculated particles do not sheer. A mechanical mixer with VFD controls and an impeller is used. The wastewater then gravity flows into the DAF or the IPC.
STANDARD CHEMICAL REACTION TANK
- Carbon Steel Construction with external and internal protective coatings.
- Mechanical Mixers
- Level Controls
- Tank Drains
CHEMICAL REACTION TANK OPTIONS
- Stainless Steel Construction
- Expandable Chambers from two to four or more.
- Walkways, Ladders or Stairs.
- pH Monitoring and Control Systems
- Chemical Metering pumps
- Chemical Solution/Slurry Tanks