Grit removal, processing and handling is another area where wastewater treatment plants can improve savings. If allowed to enter the plant, grit will clog systems – reducing efficiency and cause abrasion damage which can prematurely wear down pumps and valves. This all adds to operations and maintenance overhead. Choosing the correct grit trap, classifier and washer can considerably cut down on costs.
Hydro-Dyne’s Sand Shark Grit Trap is a simple, effective, efficient and economical solution to your grit removal needs. In-ground and above-grade models are available from flows up to 3,066 L/s per unit. Hydro-Dyne’s vortex grit removal system includes a geared drive head and rotating flat plate impeller inside the grit collector. The Sand Shark Grit Trap is available in two models:
Stirred Vortex Propeller (SVP) — Grit removal capacity of 95% of 200 micron (2.65 g/cc) particles at average flow
Stirred Vortex Impeller (SVI) — Grit removal capacity of 95% of 300 micron (2.65 g/cc) particles at average flow.
Features
Hydro-Dyne’s vortex-style grit trap system allows continuous operation under variable flows with standard grit trap chambers managing flows up to 3,066 L/s.
270° and 360° grit trap designs
Durable 304/316 stainless steel in concrete or stainless tank
Rotating propeller/impeller maximises grit capture in the storage hopper
Hydro-Dyne’s grit dewatering equipment, the Sand Shark Grit Classifier and Sand Shark Hydro-Cyclone have been specifically designed to dewater grit slurry from wastewater. This grit removal and dewatering technology is compact, flexible, has a small footprint and can be retrofitted and customised to site conditions.
Features
Mounted directly over the Sand Shark Grit Classifier inlet hopper, the Sand Shark Hydro-Cyclone has replaceable wear liner and no moving parts. This grit removal and dewatering technology features:
High capture efficiency — lamella trays and centrifugal force handle peak grit events
Grit removal capacity of 95% of 75 micron particles (2.65 g/cc) at average flow
Durable 304 or 316 stainless steel.
Lower bearing fully protected against ingress of abrasive particles
Dewatered grit is deposited directly into the receptacle.
The KUHN KSK Grit Classifier separates sediment into solid and fluid constituents. The classifier’s robust design and low energy consumption provide long-term investment security.
Features
The superior design of the KUHN KSK Grit Classifier ensures optimum operation. Features include:
A robust design and high-quality materials that ensure high operational reliability
High separation capacity
Optimised design to minimise turbulence and promote grit settlement
Sediment, composed of a mixture of organic sludge, solid matter of various types and mineral grit, builds up in sewer systems and grit chambers. The KUHN KSW-S/RW Grit Washer and Separating machine separates sediment into organic solid matter and mineral grit parts, enabling separate disposal.
Features
The advanced functionality of the KUHN KSW-S/RW Grit Washer and Separating Machine facilitates a continuous, systematic separation of the material flow into heavy mineral components and lighter, predominantly organic matter. Features include:
Organic content reduction to ≤ 3% loss on ignition
Filtration efficiency of 95% with particle size 0.2 mm
Concentration of dry substance for the discharged grit >90%
Very large tank volume for filtration efficiency of fine and super-fine grits
Adjustable positioning of the inlets and outlets, including the discharge screw
Vortex mixer machine with a special bearing unit for extra supports
Three leg supports for free standing sediment tank
No lower bearing for the grit discharge screw
Standalone separation containers via three heavy-duty load brackets
Intuitive and spacious instrument panel
Low operating costs
Easy to maintain (all parts are removable and easy to access).
