PolyClay Chemistry

PolyClay products are blended products based on natural minerals. They are powdered semi-granular formulations, which are added directly into the wastewater. The components of the formulations dissolve and react in sequence. They work by pH adjustment, precipitation, ion exchange, coagulation and flocculation. PolyClay offers many advantages over traditional treatment methods.

Benefits of PolyClay Chemistry

• Typically reduces COD and suspended solids levels more effectively than traditional methods.
• Usually more efficient in removing metals from wastewater.
• Significantly improves the dewatering of the sludge and prevents blinding of the filter press or filter media.
• Rapid reaction and settling time to enables fast processing of wastewater.
• Typical filter press cakes will contain 50 - 60% solids.
• Can eliminate the handling of strong liquid acids and alkalis.
• Typically eliminates the need to pre-mix solutions prior to treatment.
• Usually encapsulates the contaminants to prevent them leaching back out of the sludge at the landfill site. This reduces the hazardous classification of the sludge and hence substantially reduces disposal costs.

Typical contaminants removed by PolyClay include:

• Water borne paints
• Latex
• Heavy metals
• Water based inks
• Suspended solids
• Dyes
• Oils
• Adhesives
• Phosphates
• Many other contaminants which contribute to non soluble COD levels are also removed.

CTECH technical team

CTECH's technical team, laboratory and pilot plant facilities give ongoing support to their customers and are constantly working to improve their range of formulations and treatment systems.

Continued product development has led to many different blends tailored to treat different industrial wastewaters. CTECH is constantly identifying new ways to treat wastewaters that have proved difficult to treat by traditional methods. 

Treatment Systems

CTECH also supply a wide range of treatment systems, which are designed to optimise the performance of the PolyClay products and therefore provide the most effective treatment process. Treatment systems can be individually designed for customer's specific requirements.

CTECH also specialize in adapting and improving existing treatment systems for use with PolyClay products.

How Does the Treatment with PolyClay work?

Examples of applications and industries are:

Glass industry:
Specifically for the glass industry CTECH have developed specialist PolyClay formulas to remove the very fine glass particles from grinding. Through this highly efficient removal of particles it is possible to increase the use time of the water used in the grinding process before replacement is required. Examples of benefits are longer life span of drills and grinding/cutting tools, higher accuracy, less cleaning and changing of water in the collecting tanks.

Paint industry:
By treating the cleaning water that occurs during the production of paint with PolyClay, the water can then be discharged to the sewer. Pigments are encapsulated with the benefit that heavy metals will not leach out. This often reduces the cost for disposal to landfills.

Paint shops:
Different PolyClay products and equipment assure an economic treatment of the water curtain in spray booths. PolyClay also treats the cleaning water that results from cleaning of the spray guns. Simple handling allows for economic and trouble-free usage by the operators.

Water that contains oil and grease:
Specialist PolyClay formulas have been developed to remove oils and grease emulsions from water. CTECH also supply oil skimmers for removal of floating oil and grease.

Corrugated and paper industries:
Successful removal of flexo inks and glues from corrugated box plants.

Metal industry and galvanic industry:
CTECH products are used to remove metals, heavy metals, oil and grease that can be found in wastewater generated in the metal industry.
In the galvanic industry the surface treatment of metals typically results in a lot of heavy metals in the water which then need to be removed before discharging to the sewer.

Furniture and wood industry:
CTECH have efficient ways to remove phosphates from water that occur during the production of steel furniture. Additionally for the wood industry CTECH have solutions to remove glues from water.

Glue and Latex:
Removal of suspended solids (glues and latex) in wastewater. Very often companies are challenged in their ability to filter the sludge after treatment. PolyClay improves this process considerably.

General:
CTECH products and equipment are also used as a pre-treatment for those waste streams that are hard to treat. After pre-treatment the water can then be further treated with ultra filtration, biological treatment and/or other post-treatment processes.