Microfilters for waste waters
The microfiltering system with inlets smaller than 1 mm represent the evolution of traditional screening and enable to improve the capacity of removal of the suspended material before the following treatment phases, whether the factory discharges into its own plant or into a centralised plant. The range of Cleandisc tannery filter (patented) represents the evolution of a widely tested machine, the rotating disk filter, opportunely modified for an easier and quicker maintenance of the filtering nets.
Technical features
The CLEANDISC microfilters consist of a tank divided into three section: feeding, clarified discharge and excess liquid. The flowing back liquid is pumped to the feeding section, it flows through the space between the couples of rotating disks covered with filtering net. Water filters through the net and passes to the discharge section, while the solid particles are retained inside the disks. During their gradual increase in quantity, they form compact masses that, scraping the inner surface of the filtering nets, keep them clean. When the retained solid parts exceed a certain volume, the machine automatically begins to discharge them. The filtering nets are periodically cleaned by means of a system consisting of counterwashing nozzles at the end of the working cycle.
The innovating solution projected by S.C. with its Cleandisc is simple and effective: the central axle has been eliminated and the disks are mounted on driving rolls; the rotating movement is transmitted to each disk by means of a pinion mounted on the axle of the motor reducer gearing with the external edge of the disk. In this way the disks are easily movable from their site, without using any tool, and in few minutes can be deeply cleaned, even by high pressure water, or, if spare disks are available, they can replaced with clean disks . The level of filtering efficiency is always high, and we can prevent an irreversible obstruction of the filtering nets. The breakage of a net only involves the replacement of the damaged disk that can be repaired without the intervention of engineer. If disks with different thickness are available, it is possible to obtain a quick fitting of the machine characteristics to different needs.
| Model | Cleandisc 1C/S | Cleandisc 1C | Cleandisc 2C | |
| Disks | No. | 2 | 2 | 4 |
| flow rate | Mt3/h | 5-25 | 15-50 | 25-100 |
| Power | kW | 0,75 | 1,5 | 2,2 |
| Materials | Inox AISI | 304 | 304 0 316 | 304 o 316 |
Compacting machine for screenings
The waste disposal of the solid materials retained by the screening and filtering systems represents a growing cost in the management of treatment or pre-treatment plants of waste liquids. The Compactor produced by S.C. is a mechanical system based on the model of the Hairpress filters. It is adaptable to every kind of screen and filter and enables to obtain a drastic reduction in the volume of the screened material, and therefore in the waste disposal costs.
The machine consist of a spiral screw with a feeder trough that is connected with the screen or filter discharge. The material is pushed by the screw and pressed into a thick perforated plate pipe, where part of the water is eliminated, and then pushed through a rubber cone for the final compacting procedure. (Patented)
