white water filter

In papermaking, 99% water is removed from pulp to extract 1% useful materials. Therefore, this process is extremely water consuming, however, the potential for water reuse is great. To make the most of the waste water called white water has both economic and environmental benefits. With only minor treatment and adjustment, white water can be used in a variety of applications in the plant, including flow dilution, machine operation, cleaning and chemical synthesis.
Recycled fiber
White water can hold up to 30% of the incoming fiber. Therefore, the recovery and filtration of white water is a good use for pulp mills, and the fiber can be recycled and added to the pulp stream. Water is needed to create a constant flow operation for those that turn raw materials into pulp and dilute pulp streams. Consistency of slurry flow is the key to plant operation efficiency.
In order to maintain consistency, the filler content must be removed before returning white water to the plant network. The filler content, usually the fine mineral content, is much smaller than the dehydrating screen and enters the white water at a higher speed than the pulp fiber. Instead of packing along with paper fibers, the contents of the packing are removed and recycled using high pH precipitates, such as lime dosage, which aggregates the mineral content. Return to white water flow with minimum filling volume, avoiding the need for advanced dose control of filling.
The return of white water to the plant is the first option for reuse due to the minimum treatment required to capture and reuse water and fibers. In the case of excess white water, reuse for other uses exists in the plant, despite additional treatment requirements.
Application of water reuse
Fiber free water is required for reuse in applications such as heating and cooling systems or chemical synthesis. The so-called "save all" equipment is used to remove fibers and fillers, which can not only recover raw materials, but also further reduce the wastewater treatment process. First, long fiber particles are easily captured by the roller screen, and then other solid particles are removed by precipitation. Achieve a higher level of solid removal than the previously completed removal of the filler content. After the flocculation water of all processes is preserved and precipitated by slow agitation, adjust the pH value. The solid is then removed by settling in a gravity clarifier.
In some applications, a higher degree of solid removal is required, such as water applied through a nozzle. After clarification, the water is sent to a clear well, and then the remaining fine particles are captured through the filter element. Finally, when using reclaimed water in contact systems such as steam boilers or vacuum pumps, the water must also be treated to prevent metal corrosion, which is a process of pH control.
Finally, all water used in the paper mill is treated before discharge. Because the discharge requirement is higher than the treatment requirement of most white water reuse in paper mill, reuse reduces the total material and energy cost of water treatment. Fortunately, the process required for reuse in the plant is achieved through pH regulation and clarification.

The SS removal device for general drainage treatment is utilized for the purpose of separation and recovery in the manufacturing process.           

 Features ■ long time filtering with anti cleaning function.           

 ■ the exchange of filters is not necessary.           

 High speed and low pressure of precise filtration.         

■ the processing equipment is compact.           

■ reduced running costs.      

■ it's easy to maintain management.           

 Examples of use Industrial water, river water   

 Circulating water treatment of circulating water pool and cooling tower  

 Drainage of paper making, food processing, dyeing and agricultural water processing plants