Water Treatment And Environmental Control | Industrial Manufacturers

A paper manufacturer should find a safe method for disposing of the wastewater. Achieving the innovative ways to reuse the water is the solution for the wastewater treatment. There are many industrial methods around the world that dispose of large amounts of wastewaters into local waterways and ground soil. Released from various types of manufacturing processes, these releases often serve as a primary source of contamination for aquatic life, public health and the environment. As such treatment and discharge of drain water pose a large challenge. Industries that consume giant quantities of water embrace everything from pulp and paper to rock oil refinement to automotive production, with agriculture and power-generation answerable for a measurable ninety per cent of direct water withdrawals.

In Pulp and Paper Industry:

As water is needed to make paper pulp out of fibres such as cellulose, wood or recovered paper, the pulp and paper industry requires high volumes of water. Approximately 17,000 gallons of industrial process water is used for every ton of pulp produced in the production of paper. This sets the Pulp & Paper industry at the top of the list for industrial consumers of fresh water and energy. Wastewater from these factories contains de-inking chemicals, bleach, process chemicals and additives in addition to leftover fibres. The water is characterised by a high Chemical Oxygen Demand (COD) and is first treated mechanically, followed by full biological treatment.

Also Read: Water Treatment and Environmental Control in the Pulp and Paper Industry

For many years, a preponderance of pulp and paper mills have used the method of clarification a basic primary treatment method to reduce and remove total suspended solids (TSS) and other materials such as bark, dust and wood fibres generated from the paper-making process. In addition to removing these solids, this method also reduces the amount of biological oxygen demand (BOD) levels in the effluent.

The effluent then undergoes a secondary biological treatment to remove organic matter like residual TSS and BOD; address chemical oxygen demand (COD) and absorbable organically-bound halogens (AOX) as well as other carbon-based bacteria. Activated sludge and aeration within basins are commonly used.

Also Read:Sustainable Water Treatment in the Pulp and Paper Industry

Recently Developed:

One wastewater treatment technology that is gaining traction quickly is anaerobic digestion. While this process has high capital installment costs, it does not require oxygen, ultimately resulting in significant energy savings over time. Anaerobic systems also generate less sludge for the amount of BOD removed compared to the high quantities created from aerobic treatment. Moreover, this approach can break down the particles in the solids and turn them into biogas, which can be used to harness energy onsite, greatly reducing sludge disposal costs. Refer to the flowchart below for a better understanding of the anaerobic digestion process.
The advanced or tertiary treatment, where fine particles are more precisely removed, oxygen-demanding matters are better maintained and residual nutrients used in secondary treatment are thoroughly withdrawn. Moreover, approaches such as adsorption, UV disinfection, coagulation/precipitation, membrane filtration, dechlorination, and chemical oxidation can be included at pulp and paper mills to support this process.

Tertiary treatment is beneficial in industries that have the capability of reaching the desired level of pollution control and even possibly reusing the water for  various applications such as plant cooling and agricultural irrigation. Further technological utilizations such as enzymes, closed-loop systems, fixed bed biofilm processing, and nitrogen fixation are also being realized for effective treatments.

Also Read: Latest Innovations Driving Water Treatment in Paper Mills

Water Treatment Products

The effective water treatment products for purifying wastewater has substantial advantages. They decrease energy consumption and increase the quality of the paper product. They also simplify the production process and reduce production disturbances. They are more environmentally friendly.

•    Electro-chlorination system
•    Dosing pumps
•    Retrofit kit
•    Grinder pump

Few Global Companies Who are Striving for Wastewater Treatment

Aqua-Aerobic Systems:

Aqua-Aerobic Systems, Inc. services its customers around the world with performance-proven, quality products and systems that are adaptable to the changing demands of the water and wastewater treatment industry. Our markets range from small to medium sized municipalities to large metro areas around the world, treating both domestic and industrial waste streams.

We pride ourselves on establishing life-long relationships by fully understanding our customers.

Aqua Biotech Engineering SARL:

AQUABIOTEC ENGINEERING SARL is a French specialist for waste water treatment technologies. The company offers design, building and commissioning of waste water treatment plants for municipal and industrial customers.

Having more than 30 years of experience, our company has developed several economic and efficient customer orientated standardized technical solutions for main applications. The technology of aerated biological filtration is today implemented in more than 20 paper industries in Europe.  AQUABIOTEC is successfully working in all European countries as well as in the Middle East and Thailand.

Algas Fluid Technology System AS:

ALGAS FLUID TECHNOLOGY SYSTEMS AS has over 26 years experience in supplying water treatment plants for the industry, especially the Pulp and Paper Industry, although the concept design has been available and in use for many more years.

Working closely with its customers, ALGAS offers, supplies and commissions a range of unique and effective Microfilter Systems. The size and design of the system is established using experience from the results of Test Filters treating “Live Water” in mill trial conditions and the knowhow from over more than 500 successful installations. Much of the system is made in locally selected fabricating plants with the use of some bought in components. Marketing is affected throughout a network of agents and engineering companies in more than 50 countries world-wide. Distributors have been established in India, Japan, the USA and Canada, and ALGAS GmbH, a daughter company in Düren near Cologne, is operating as a marketing and service company for EU countries and the Middle East. The Microfilter Concept is unique as it is used in most water treatment applications in Pulp & Paper Mills with equal efficiency in all application areas. In some applications previously considered impossible for a “Filter”, the Microfilter Concept has proved that its efficiency makes it possible to replace, for example, the large sedimentation basins used for primary treatment, having only 5% of the installed holding capacity but with 100% of the performance efficiency. Installation is fast and straightforward taking only days rather than months.

Evoqua-water Technologies:

The global leader in helping municipalities and industrial customers protect and improve the world’s most fundamental natural resource: water.
We have a more than 100-year heritage of innovation and industry firsts, market-leading expertise, and unmatched customer service. Our cost-effective and reliable treatment systems and services ensure uninterrupted quantity and quality of water, enable regulatory and environmental compliance, increase efficiency through water reuse, and prepare customers for next-generation demands.

Evoqua’s unparalleled portfolio of proven brands, advanced technologies, mobile and emergency water supply solutions and service helps cities across the world provide and discharge clean water, and enable leisure and commercial industry to maximize productivity and profitability.
Every day, millions of people and thousands of companies rely on Evoqua Water Technologies to help them meet their needs for clean water.

Purac AB:

Purac have supplied more than 500 water and wastewater treatment plants to the pulp and paper industry. The company is recognized as one of the world leaders providing water and wastewater treatment for this industry. The know-how embraces the fields of process water treatment, fibre separation in recycling internal process water and various methods of wastewater treatment.

Purac is a part of the Läckeby Water Group, which is an independent, privately-owned Swedish group, offering contracting, products and servicing for water treatment and biogas production. We are established on three continents and have to date completed contracts in 67 countries worldwide.

Water Remediation Technology LLC:

Water Remediation Technology LLC is the only water treatment company in the United States to provide a total, long-term, environmentally sound solution for removing radioactive and other select contaminants from water sources. Specialized licensing enables the company to not only remove contaminants but also safely dispose of spent radioactive treatment media in an environmentally responsible way.

WRT’s objective is to provide clean water using methods that maintain a clean earth.

WRT provides everything needed for clean, safe water and maintaining a clean earth including process equipment, proprietary treatment media, safe exchange of media, assurance of radiation safety, the proper handling and disposition of treatment residuals, and maintenance.
The WRT total solution keeps costs low for customers and helps ensure contaminants are removed from the water and the community.

WRT guarantees its water treatment systems will reduce high levels of select contaminants to below the requirements of the Environment Protection Agency.

WRT maintains an environmental perspective and recycles valuable contaminants into useful products when economically feasible.