Wastewater from electroplating processes contains elevated concentrations of heavy Metals, Suspended Solids (TSS) dissolved Solids (TDS), and can also include iron, oil, and organic contaminants. In 2007, Haliant Technologies commissioned a wastewater reclaim system to recover and purify 95% of the electroplating and coating wastewater for reuse in production.
Haliant utilized a combination of treatment technologies including chemical-induced precipitation of solids, ultrafiltration for removal of oil, organics, and TSS, media filtration for iron removal, and reverse osmosis for TDS reduction.
Chemical manufacturers can produce some of the most challenging wastewaters – high in COD, organics, TDS, TSS, and oils. Haliant designed, manufactured, and installed a wastewater treatment system in 2008 to treat chemical wastewaters with very high COD and TDS in addition to concentrations of many organic solvents including toluene.
Haliant utilized a ceramic ultrafiltration membrane system to supplement the existing biological treatment system to forma membrane bioreactor (MBR) process. Ceramic membranes proved to be resistant to solvents in the wastewater and capable of producing high-quality filtrate.
In some locations, the only water available is from the sea. Seawater salt content is typically about 3.5%, but can exceed 5%. The major cost of desalting water is the energy required to achieve the high operating temperatures or pressures needed to separate the water from the salt. Haliant utilizes the latest energy recovery technology to provide the most energy efficient desalination equipment available.
In 2004, Haliant Technologies commissioned a seawater desalination system to provide essentially all the potable water for an island community. Haliant’s energy-saving design provided operating costs of less than 3 kwh electricity consumption per m3 of potable water.
Power plants require pure water for boilers and
steam turbines. Haliant’s comprehensive product line includes all the technologies best suited for power plants - ultrafiltration, reverse osmosis, ion exchange, and electro-deionization. Equipment from Haliant Technologies now treats municipal wastewater at the largest waste-to-energy power plant in the USA. This equipment has allowed the plant to completely eliminate its use of potable make-up water and now all of the purifed water is reclaimed from their process.
Beverage producers are driven to maintain consistency in their finished product. Whether it is for beer, soft drinks, or bottled water, the product must be the same regardless of the condition of the make-up water available.
Haliant Technologies has helped hundreds of beverage producers deliver the high-quality beverage quality with exact consistency from well, municipal, and surface water supplies.
Haliant’s reverse osmosis systems for beverage applications include an automatic permeate blending feature that maintains precise control of the product water even when the feed water conditions vary.
Pigment manufacturers generate significant quantities of wastewater containing high levels of Chemical Oxygen Demand (COD), and total suspended solids (TSS) and total dissolved solids (TDS). Haliant provided the wastewater treatment system for a large pigment producer with excessive concentra-tions of TDS, TSS, and dissolved iron.
The Haliant-supplied system utilizes a combination of bio-chemical and membrane filtration treatment. The bio-chemical treatment precipitates the dissolved iron, adjusts the pH, and removes the suspended solids to a level compliant with discharge standards. Ultrafiltration and reverse osmosis membranes treat the bio-chemical effluent to a level suitable for reuse in production.
Yields of irrigated crops and other agricultural products are greatly influenced by the quality of the irrigation water. Haliant’s principals designed and supplied a complete wastewater treatment system to reclaim tertiary effluent from the local waste treatment plant for use in irrigating seedlings in a nursery.
Previous use of the untreated effluent resulted in considerable yield loss. The new system, utilizing chlorine-tolerant reverse osmosis, produced water ideal for seedling growth.
Pharmaceutical manufacturers need ultrapure water that meets USP standards reliably and affordably. Haliant Technologies supplied this double-pass reverse osmosis system to a major multi-national pharmaceutical producer. This system includes 316L stainless steel sanitary piping and fittings and produces product water of less than 1 us/cm conductivity.
Haliant has supplied similar ultrapure systems for phar- maceutical manufacturers using electro-deionization (EDI) technology as post treatment of the reverse osmosis permeate. EDI systems from Haliant Technologies consistently yield product water with greater than 10 megohm resistivity.
Manufacturers utilizing machining, turning, cutting, and other metal fabrication operations are often faced with recovery and disposal of coolant and cutting fluids. These fluids include extremely high levels of emulsified oils that can be reused if other contaminants are removed, but cannot be easily discharged.
Ultrafiltration systems from Haliant Technologies have been used to separate the waste oils from the reusable cutting fluids, reducing the manufacturers operating and disposal costs. Haliant Technologies has also supplied complete waste water treatment systems to remove the dissolved solids from the ultrafiltration effluent and prepare the treated wastewater for compliant discharge or reuse.
Haliant Technologies has the experience and products to provide new and optimize existing municipal wastewater treatment plants. Haliant has designed, supplied, and installed the equipment and systems for state-of-the-art municipal treatment facilities. Incorporating the equipment and recommendations of Haliant, this municipal wastewater treatment plant was able to expand its capacity from 100,000 m3/ day from to 300,000 m3/day and comply with all relevant environmental discharge standards.
Leachate from solid waste landfills is an increasing wastewater treatment issue. The leachate wastewater is usually very high in COD, BOD, and dissolved solids. Conventional biological wastewater treatment is often insufficient to treat the leachate wastewater to comply with environmental discharge regulations.
Membrane Bio-Reactor (MBR) systems from Haliant Technologies can often treat the landfill leachate wastewater enough to meet discharge requirements. In extreme cases, MBR systems can be used as pre-treatment for downstream bio-chemical or membrane filtration processes - especially if the water is to be reclaimed for miscellaneous use.
Electronics, semiconductor, and other manufacturers of high-technology products are constantly in need of ultrapure water. Haliant Technologies has the experience and products to provide the right ultrapure water solution for the electronics industry, including double-pass reverse osmosis (RO),Electro-deionization (EDI), and ion exchange.
Haliant has supplied an electro-deionizationsystem for one of the world’s largest DVD producers. This EDI system features all PVDF product water piping and treats 1-pass RO permeate for final polishing by mixed-bed ion exchange. Use of the Haliant-supplied equipment allowed the user to extend the service life of the ion exchange resin tenfold.
Wastewater from textile production processes are typically high in Chemical Oxygen Demand (COD), total suspended solids (TSS), hardness, Total dissolved solids (TDS), and can also include Iron, oil, color, and organic contaminants. In 2010, Haliant Technologies commissioned a wastewater reclaim system to treat textile wastewater for both miscellaneous use and for make-up water for production. Haliant utilized a combination of treatment Technologies including ultrafiltration (UF) for removal of COD, organics, and TSS, media filtration for iron removal, and reverse osmosis (RO) for hardness and TDS reduction. The UF filtrate water is suitable for general use in the facility, while the RO product water is as pure as the make-up water from the municipal water supply.