The pulping and papermaking process requires a large amount of production water. The wastewater generated by bleaching agents, fillers, and their reaction products are all pulping and papermaking wastewater. The primary sources of wastewater are the cooking waste liquid produced during the pulping and cooking process, the mid-stage wastewater produced during the middle stages of the pulping process (washing, screening, bleaching, and beating), and the paper machine white water produced during the papermaking process.
This article introduces one of the relevant indicators of wastewater treatment: pH value, from the concept of pH value to the importance of controlling pH value in wastewater treatment and the influencing factors and control methods of pH value in different wastewater treatment stages.
IntroductionWater is widely used in the food and beverage industry, resulting in a large amount of wastewater. The generated wastewater needs to undergo a series of treatments to meet the requirements of reuse or discharge, in order to reduce costs and protect the environment. Pretreatment system is
The lamella clarifier separates sedimentable suspended solids from liquids for the treatment of process wastewater. Compared with the traditional sedimentation tank, the lamella clarifier occupies a smaller area and settles suspended solids faster and easier in a given time.
The sedimentation performance depends on the effective sedimentation area and is independent of the sedimentation depth. Lamella plates are installed inside the tank as a module. The effective sedimentation area of lamella clarifier is the accumulation of the projected area of the lamella plates not the occupied area.
Lamella clarifier are structures in wastewater treatment that utilize the principles of sedimentation and filtration to settle suspended matter in the water. In terms of design, they can be divided into two types: gravity and inclined plate. Gravity type is to use gravity to make the suspended material sink.
Flotation is an effective wastewater treatment process designed to treat for total suspended solids (TSS), BOD/COD (Biological/Chemical Oxygen Demand), and Fats, Oils, & Grease (FOG).
