Water Treatment Screening Equipment

Operation

The Belt Fine Screen with filtering band is used to screen sewage water entering the purification plant, and is normally installed in channels.It is composed of a set of filtering components moved against the stream by two chains equipped with chain stretcher, and anti-friction and anti-noise sliding blocks.

The material gathered by the filtering surface is conveyed to the highest point of the machine where the discharging hopper is placed. The filtering components are cleaned by a motorized roller brush equipped with synthetic bristles and with a washing system composed of spray nozzles. The chains are moved by ring gears keyed to the gear box and equipped with a torque limit switch (excluded from the supply).

• Optimised purification

• Simple technology and solid construction

• Fast replacement of filtering elements

• Availability of multiple filtration openings as per the

• filtration requirements

• Stainless steel or carbon steel corrosion proof models

• Heated models to be installed in places exposed to

• Made to measure models as requested by client

The screen is composed of a perforated plate whose holes diameter is as big as the desired openings size. The drum is supported by nylon wheels, and it is operated by a gearbox.

Application

• Purification plants purification plants with MBR process
• Septic tanks treatment water separation processes
• Industrial purification plants
• Paper mills
• Slaughterhouses
• Food and fish industry
• Chemical industry
• Textile industry
• Tanneries

Operation

• The internally fed rotary fine screen mod. RTV is composed of a tank and a spiral connected to the drum for the transport of screening.
• The filter is fed through a nozzle placed in the front of the machine. A diffuser spreads the water on a large area of the screen which, rotating, separates water from the organic particles contained. The filter is cleaned by means of a washing system composed of a tube equipped with spray nozzles for pressure water.
• During the screen operation, the water is conveyed towards the outlet placed in the front of the machine, while the screening is transported through the spiral towards the screening outlet installed in the back of the machine.
• The screen special inclination towards the outlet contributes to the dewatering of screening.
• The screen is equipped with a by pass nozzles protecting the filter from overflows, and with an arrangement for an overflow probe.

Advantages

• Internal feeding

• By pass protection

• Perforated plate

• Ideal for Mbr applications

• Paper mill
• Slaughterhouses
• Food industry
• Fish industry
• Chemical industry

Operation

• The STEP SCREEN SAVI is designed for the mechanical separation of solids from liquids. The machine is made up of two step-set lamellae, a mobile one and a fixed one, which are separated by a 3 or 6-mm spacing.
• The mobile lamellae lift screening step by step, in every working cycle; then, the material is put down on the fixed lamellae before it sediments where it formed.
• The inorganic particles in the water flow are kept on the screen forming a screened layer. Thus, the water level above the screen rises enlarging the filtering surface.
• The so-formed screened layer on the screen surface keeps finer and finer particles. When the water level upstream reaches a certain height, the screen starts the cycle and goes up a step.
• During the cycle the mobile lamellae lift the screened material, and they put it down on the next step. So the screened layer is conveyed on the steps along the inclined screen and, at the same time, the layer acts as a further fine filter. Finally, the screened material is discharged on the higher extremity of the steps.
• The screen gets cleaned every time it moves up.

Advantages

• Separation of non-biodegradable solids,floating or inorganic substances

• Self-cleaning screen thanks to the mobile lamellae

• Low operating costs

• Available also in stainless steel tank, with nozzles

• Capacities: 40 to 8000 m3/hr
• Installation suitable for circular or rectangular tank or fabricated unit.

• 5 m3/hr to 2500 m3/hr
• Openings: 0.25 mm to 6 mm.
• Installation in Pipe or channel.

• Before MBR
• Before pumping stations
• Slaughter house
• WWTP, etc

Use

In order to operate the purification plant properly, and to unite costs and profits, it is necessary to use savi high performance screening systems. They are designed to prevent both non-biodegradable floating substances and non-purified sludge from forming. Moreover, such systems avoid clogs both in air ducts and in pumps. Therefore, one can reduce routine maintenance, energy and staff costs.

Applications :-

• Purification plants

• Purification plants with MBR process

• Septic tanks treatment

• Water separation processes

• Industrial purification plants

• Paper mills

• Slaughterhouses

• Food and fish industry

• Chemical industry

• Textile industry

• Tanneries