Water & Wastewater Treatment Test Kits
Dissolved Air Flotation (DAF) Test Kit
Dissolved air flotation in solids-liquid separation is implemented through the introduction of micron-sized gas (usually air) bubbles into the liquid phase. As the micro bubbles attach to the solids, the resultant buoyant force of the combined solid-gas causes the matrix to rise to the surface where it is collected.
Thickening Test Kit
Sedimentation is the separation or concentration of suspended solids particles from a liquid by settling. Sedimentation can be divided into two operational processes, clarification and thickening. The objective of the thickener is to increase the suspended solids concentration, whereas the objective of the clarifier is to produce a clear effluent.
Clarification Test Kit
Clarification is a method for removing relatively small quantity of suspended solids from a dilute suspension to produce a clarified liquid. The key is balancing the upstream velocity of the liquid and the particle sedimentation velocity.
In a rotary vacuum drum filter, a porous media or filter cloth is supported by the cylindrical drum surface and passes through the sludge vat while the partially submerged drum rotates under applied vacuum (negative pressure). The slurry is sucked from the vat with the liquid passing through the media and the solids retained on the media. The liquid is collected through a series of internal piping and valve arrangement, while the dewatered solids are scraped off the surface of the media.
Pressure Filtration Test Kit
In filter press dewatering, high pressure is directly applied to the sludge against a porous media supported by a plate. Typical pump pressures range from 100 psi to 225 psi. As the pump develops pressure, the sludge is forced onto the media lined plates. The filtrate flows through the media and exit through channels. After a pre-set pressurized time (cycle time), the sludge pump(s) are stopped, the feed line drained, and the press begins to unload. The moving end of the unit retracts and separates the plates, allowing the filter cakes to fall from the plates.
Belt Press Filter Test Kit
Pretreated (chemically conditioned) feed sludge is introduced to the gravity drain deck where furrowing plows move the sludge to allow free water to drain. As the sludge travels along the belt filter, the sludge is fed into a low pressure wedge zone where the sludge is trapped between the upper and lower belts. As the belts converge on the initial contact point of the first pressure roll, the sludge is dewatered by the increased pressure. Final dewatering occurs in the high pressure zone as the trapped sludge travels through a series of smaller diameter rollers with sharp turns.