Conventional Inclined‑Plate Thickener

The KMIZ(Y) series inclined‑plate thickener (clarifier) is a new product series developed by introducing advanced technology from SALA International AB of Sweden. Over the past decade or more, it has been widely used in municipal, environmental protection, chemical, electric power, food, light textile, mining and metallurgical industries, as well as in industrial and civil water supply and drainage projects for turbid water clarification, sewage treatment, and wastewater reuse. It features compact structure, small footprint, and easy operation and maintenance. It is particularly suitable for technical renovation, expansion projects, areas with limited land, extremely cold or dry hot regions, and mobile operations.

The circular‑tank inclined‑plate thickener (KMLY) is equipped with a center‑drive rake sludge removal device. Several sets of inclined plates are placed inside the circular tank to achieve large‑scale equipment, reduce overall height, and multiply the processing capacity. The discharge is forced by a rake mechanism. Its structure is shown in Figure 14‑5, and specifications are listed in Table 14‑4.

Figure 14-5 Structure of KMLY inclined-plate thickener

Table 14-4 Specifications of KMLY inclined-plate thickener

Note: Specifications can be modified according to user requirements or actual operating conditions.

Box-Type Inclined-Plate Thickener

The KMIZ box-type inclined-plate thickener consists of an upper box body and a lower cone. Inside the upper box body, there are groups of inclined plates arranged at an angle. Each group is composed of several independent inclined-plate units. The material to be treated enters from both sides of the lower end of each inclined-plate unit. Above the inclined-plate groups, an overflow launder runs the full length. The bottom of the launder has throttling holes that create a hydraulic backpressure for the overflowing liquid, ensuring uniform loading across each inclined-plate unit and preventing radial turbulence. The side-entry, semi‑countercurrent feeding method allows the settling solid particles and the rising clarified liquid to follow their own paths without interfering with each other. The thickened sludge sliding down along the inclined plates enters the lower cone, where it is compressed and dewatered, and then discharged by gravity. Mechanical vibration can also be used to facilitate smooth discharge of the thickened sludge. The structure and external view are shown in Figures 14‑6 and 14‑7, and specifications are listed in Table 14‑5.

Figure 14-6 External view of KMIZ box-type inclined-plate thickener

Figure 14-7 Structure of KMIZ box-type inclined-plate thickener
1—Feed inlet; 2—Feed launder; 3—Inclined plate groups; 4—Overflow launder; 5—Overflow outlet; 6—Underflow; A—Upper box; B—Lower conical hopper

Table 14-5 Specifications of KMLZ box-type inclined-plate thickener
(Table content not provided in the original text)