Industrial wastewater treatment involves treating wastewater to make it acceptable for discharge into a river, stream, lake, ocean, etc. The treatment of industrial wastewater involves the use of various processes and performance chemicals to remove impurities from the water by coagulation, precipitation, flotation, sedimentation, filtration, biological oxidation, chemical oxidation, etc.
Each industry has its specific problems. The steel, pulp & paper, refining, poultry/meat packing and processing, petrochemical and mining industries represent the largest wastewater generators. The smaller industries generally discharge their wastewater into the local municipal wastewater treatment plant but in many cases even relatively small industrial plants operate their own wastewater treatment plants.

• Total Suspended Solids (TSS) removal
• Color removal
• Fat, Oil and Grease removal
• Heavy Metals removal
• Chemical Oxygen Demand (COD) reduction
• Total Organic Carbon (TOC) removal
• Biological Oxygen Demand (BOD) reduction
• Sludge Dewatering
• Hydrogen Sulfide odor control
• Improve operational consistency

By clicking onto on of the above you will learn more about the specific products that are used in Industrial Wastewater Treatment Applications.

Industrial Wastewater Treatment:
Suspended Solids Removal

In both municipal and industrial wastewater treatment applications there are many types of materials that need to be removed. They can be organic solids, inorganic solids, oils, fats, etc. To remove these solids generally requires a product that has both good coagulating and flocculating capabilities.

Gulbrandsen Solution:
Each different solid present in wastewater has its unique characteristics. Gulbrandsen carries a line of specialty products specifically designed to remove wastewater solids. The Gulbrandsen products that will best assist you in solids removal are:

Aluminum Chloride Solution
Aluminum Chlorohydrate Solution
Ferric Chloride Solution
Polyaluminum Chloride Solution

Industrial Wastewater Treatment:
Color Removal

Color in water comes from natural sources resulting from the decaying of leaves or other vegetation. Color can also come from chemicals in the water resulting from industrial wastewater or agriculture runoff.

Most of the color present in water is soluble and very difficult to remove. One approach to remove color is to oxidize it with chlorine. This may reduce the color but it may also generate other organic compounds that also have to be removed from the water.

Gulbrandsen Solution:
Gulbrandsen has several products that work well in removing color from water. In one case they work by absorbing the color in a large voluminous floc. In another the anionic charge of the color allows the material to be selectively precipitated with an inorganic aluminum polyelectrolyte. The Gulbrandsen products that will best assist in TOC removal are:

Aluminum Chloride Solution
Ferric Chloride Solution
Polyaluminum Chloride Solution

Industrial Wastewater Treatment:
Oil Removal

In industrial wastewater, oils and greases are often removed by flotation. Sometimes these oils and greases are present in the form of an emulsion. To separate this type of oil, the emulsion must be broken. These emulsions are negatively charged and can be readily coagulated and removed by flotation with a strong inorganic coagulant.

Gulbrandsen Solution:
Gulbrandsen offers several inorganic coagulants that are very effective in breaking emulsions and coagulating oils. They are:

Aluminum Chloride Solution
Ferric Chloride Solution
Polyaluminum Chloride Solution

Industrial Wastewater Treatment:
TOC, COD and BOD Removal

TOC is the measure of the Total Organic Carbon, COD is the measure of the Chemical Oxygen Demand and BOD is the measure of the Biological Oxygen Demand in wastewater. These three parameters are used to characterize both municipal and industrial wastewater. BOD tends to be used more frequently in municipal wastewater treatment, and COD is used more often in industrial wastewater treatment.

In both municipal and industrial wastewater treatment applications there are many types of materials that contribute to TOC, BOD and COD. They can be organics, inorganics, oils, fats, etc. TOC, BOD and COD can be removed by coagulation and/or filtration when they are in the form of suspended solids. If they are soluble, then adsorption, biological oxidation or chemical oxidation processes are needed to remove them. To remove suspended TOC, BOD and COD generally requires product that has both good coagulating and flocculating capabilities.

Gulbrandsen Solution:
Each different solid present in wastewater has its unique characteristics. Gulbrandsen carries a line of specialty products specifically designed to remove wastewater solids. The Gulbrandsen products that will best assist you in solids removal are:

Aluminum Chloride Solution
Ferric Chloride Solution
Polyaluminum Chloride Solution

Industrial Wastewater Treatment:
Sludge Dewatering

In all water/solids separation processes, the solids must be handled and disposed of. The volume of solids is directly related to the ultimate cost of disposal, and disposal costs are rising as regulations tighten and land values rise. In cases where dewatering equipment is used to increase the percentage of solids in the sludge, the choice of dewatering chemical will make a significant difference in the results obtained. The cost of the chemical is small compared to the cost savings of producing smaller sludge volumes through eliminating excess water. Inorganics like ferric chloride and lime were widely used in the past but lost ground as the technology of organic polyelectrolytes proliferated. Today, many municipal and industrial accounts are using combinations of organics and inorganics to ensure the best all-around performance.

Gulbrandsen Solution:
Gulbrandsen offers several products that can be used alone, in combinations with lime or in combination with organic polyelectrolytes. They are:

Ferric Chloride Solution
Organic Polyelectrolytes

Industrial Wastewater Treatment:
Hydrogen Sulfide Odor Control

In both municipal and industrial wastewater distribution systems and treatment plants hydrogen sulfide gas can form. This gas, above threshold levels, can cause severe odor problems.

Irons salts in solution will react with the hydrogen sulfide dissolved in water and precipitate a fine suspension of iron sulfide.

Gulbrandsen Solution:
Gulbrandsen offers several iron salts that readily react with hydrogen sulfide to form iron sulfides. They are:

Ferric Chloride Solution
Ferrous Chloride Solution

Industrial Wastewater Treatment:
Improved Operational Consistency

When looking at the use of chemicals for treating water and wastewater one must look at the entire system. This includes clarification, filtration, disinfection and sludge dewatering. The products used in the coagulation process have an impact on the operating efficiency of subsequent treatment processes. A product may work well in one process but cause major problems in another. As an example you may find a product works well to clarify water but it generates a sludge that is very difficult to dewater.

Gulbrandsen Solution:
Gulbrandsen offers a range of polyaluminum chemicals that are strongly cationic and prehydrolyzed, making them more reactive at lower dosages than conventional coagulants. Lower dosages generally mean less solids carryover and less sludge generated. The solids generated when using these polyaluminum chemicals are less voluminous and easier to filter and dewater. These product attributes translate into a more constant and uniform operation with all interrelated processes. The Gulbrandsen products that will best assist you in filtration are:

Aluminum Chlorohydrate Solution
Polyaluminum Chloride Solution
Polyaluminum Chlorosulfate Solution