Construction of a water treatment plant in paper industries factories

paper industries factories are applications that require water in many stages. Because of its importance, we work in Carewater to provide all water solutions. A range of RO systems and wastewater treatment processes are necessary. To condition and supply water to process water and production equipment. As well as for industrial wastewater treatment and recycling.

Wastewater treatment and recycling processes

Our integrated engineering and design department works on a standardized range of plants, fineness, and dosing plants for water treatment use, and industrial wastewater treatment and recycling plants. Our study and experience guarantee customized and customized solutions that can be used as a key to a used water treatment project.

Products and materials for wastewater treatment

We offer a full range of products and materials for water treatment: filtration, dosage, mixing, agitation, pumps, and water treatment products.

Our water treatment technicians are ready to guide you if you have any questions about dimensions or technical validation. Our engineering office can provide you with a customized solution to suit your needs.

Industrial Wastewater Treatment Applications

• Industrial wastewater treatment: glue, paint, ink, dyes, dust, and heavy metals.
• Wastewater for oily water.
• Water treatment is used in paint booths.
• Water is used in refrigeration cycles, boilers, and air conditioners.
• Conditioning of sediment residues in treatment plants.

Advantages of building a water treatment plant in paper industries

• Iron and manganese removal.
• Remove total suspended solids and turbidity.
• Lower costs than any alternative solutions to remove iron and manganese.
• High water flow rates.
• High loading capacity.
• Wide Operating Environment Providing stable and satisfactory performance at 5.8 to 8.6 temperature and a maximum operating
• The temperature of 113°F (45°C) reduces the need for investment to change the operating environment.
• The long operating life of the equipment and devices used.

Stages of water treatment in paper industries factories

The treatment has three main stages, called a primary (preliminary) stage, a secondary stage, and a tertiary stage. First, the suspended solids (TSS) are separated from the effluent water, then the dissolved organic materials in the water are converted into suspended solids gradually by microorganisms generated in the water. In the last stage, biological solids (sludge) are disposed of or reused as fertilizer, and the water can then be chemically or physically disinfected. The treated water is then pumped into any stream or river. It can also be used in woodland plantings, golf courses, and parks. It is also possible to pump it underground to refill the aquifer.

Initial phase

It is the removal of materials that hinder operation and maintenance and that may cause wear or clogging of mechanical equipment, as well as the disposal of greases, oils, and fats by flotation.

Initial treatment stages

Entrance room (calming): Its main purpose is to calm the speed and pressure of the water so that the flow system is changed from closed sewers to open sewers so that the surface of the water is exposed to atmospheric pressure and air. Where the water stays for a period of 0.5 to 1 minute, and the speed of water in it is from 0.6 to 1.2 m/s.

Filter

It is carried out in refineries, which are iron nets to seize large suspended materials from paper, pieces of cloth, wood, or parts of tin glass, and dispose of them by ramming, drying, or burning.

The wastewater passes through filters before it is treated to remove all the solid and floating materials that entered the wastewater, such as wooden pieces, towels, metal cans, etc. The water is filtered from these impurities through automatic or manual filters. Bar strainers are used with small spacings, which prevent the passage of any large solids that may subsequently damage or cause water treatment equipment to fail.

Remove sand and rocks

The process of removing sand and rocks from the primary treatment stages. Which is in fact the sedimentation process, where the wastewater passes through primary sedimentation basins at a relatively slow speed of 30 cm/min. This is for the sedimentation of suspended substances such as dust, sand, and metal pieces. And what is known as primary sludge collects at the bottom of the basin. Chemicals may be added to contribute to the sedimentation process, such as alum or iron salts, which are rather expensive. The froth floats on the surface, which is scraped from time to time and is an oily substance.

The treatment also includes the pre-treatment stage purification and cleaning of water from rocks and sand by controlling the speed of wastewater. Until it reaches a speed that allows the deposition of small rocks and sand at the bottom. While keeping most of the suspended organic matter in the water stream. It is important to remove sand, gravel, and small rocks early. To avoid damage to plant equipment such as pumps, etc. Sometimes there is a so-called “sand sink” followed by a conveyor that transports the sand to a place where it can be reused, but sand and rocks are often disposed of by dumping them in a landfill.

Sedimentation

In the first sedimentation stage, the sewage is pumped into huge tanks called primary sedimentation tanks. These tanks are large enough that sludge and dirty material settle to the bottom and float material, grease and oils rise to the surface to be scraped. The initial sedimentation process aims to produce a generally homogeneous liquid that can then be treated biologically and extract the dirt so that it can be disposed of or reused. The primary sedimentation tanks often include a mechanical scraper in that dirty materials are continuously expelled to a hole at the bottom of the tank, where they are pumped to be treated in other stages.

Contact us to learn more about the sewage treatment units offered by Carewater here.