0 WATER & WASTEWATER - TREATMENT

Astim is established and organized to design and manufacture various mechanical equipment for municipal and industrial water & wastewater treatment plants as well as specific process equipment, vessels and steel structures. Established in 1980, Astim operates in the heart of industrial region of Turkey, Kocaeli - Dilovasi Industrial Organized Region with 6.000 m2 indoor and 8.000 m2 outdoor manufacturing facility located close to Istanbul, surrounded with highways and harbors. Our facility is equipped with suitable machinery and tools for fabricating steel works up to 5.000 tons/year. Together...

Astim has developed a great number of innovative solutions and equipment for wastewater treatment plants. Our solutions and equipment have proven their performance and reliability at various capacities and loads, from large scale municipal wastewater treatment plants to medium / small sized plants. Coarse & Fine Screening Screening Handling & Treatment Water Flow Control Devices Grit & Grease Removal Grit Handling & Treatment Primary Sedimentation Aeration Secondary Sedimentation

Astim offers a wide variety of solutions and equipment for groundwater and surface water treatment. Depending upon the raw water quality, flow rate and operational preferences, Astim provides conventional treatment systems, combined treatment units and containerized plants. • Coarse & Fine Screening ♦ Screening Handling & Treatment + Water Flow Control Devices ^ Ultra-Fine Screening + Coagulants Dosing & Coagulation ^ Flocculants Dosing & Flocculation ^ Clarification

Efficient and reliable mechanical pre-treatment has a key importance for cleaning process in order to protect the following chemical and biological steps; as well as pumps, pipelines and other equipment from clogging and abrasion. Screening equipment are the most important members of this pre-treatment process as flow coming to the treatment plant will occasionally include wood, sticks, rags, and other debris in it.

Astim designs and manufactures a diverse range of screens for coarse and fine screening applications, offering the right solutions for every type of water and wastewater treatment plants. The screening equipment in all sizes are fully-automatic and capable of eliminating difficult substances with a high cleaning performance. The entire spectrum of screens have proven to be highly efficient and reliable. Bar Screens ^ Chain Driven Bar Screens ^ Pin Rack Screens • Cable Operated Bar Screens Belt Screens v Perforated Belt Screens ^ Mesh Belt Screens ♦ Rota-Lift Screens

Equipment for further treatment of the separated screenings form a conclusive total concept for the pre-treatment stage of water and wastewater treatment plants. The screenings are wastes which must be minimized by reducing in mass and volume as much as possible. Screening treatment equipment not only dewater the screenings, but also remove the organic material in the screenings. Inline Screening Systems ^ Rotating Drum Screens v Sewage Acceptance Plants Screening Handling And Treatment Systems ♦ Belt Conveyors ^ Screw Conveyors ^Screening Compactors

Common practice lor treatment plant design requires effective grit separation in order to reduce the wearing on the process pumps and other mechanical equipment. Astim has a comprehensive product range for grit and grease separation, offering the best tailored solutions for all types of application including integrated compact systems for complete mechanical pre-treatment and further treatment “■ systems for extracted material.

Grit & Grease Removal Systems ♦ Travelling Grit and Grease Scrapers ♦ Rotating Grit Scrapers v Vortex Type Grit Separators ♦ Grease Removal Systems Grit Treatment Equipment and Systems ♦ Grit Classifiers ♦ Grit Washers v Integrated Pre-Treatment Systems

breaking up the activated sludge floes. The heart of modern biological wastewater treatment plants is the aeration tanks where the pollutants are removed by the living microorganisms. In order to accomplish this process efficiently, Astim provides mechanical surface aerators which are capable of transferring oxygen from atmosphere to the wastewater, while maintaining sufficient uniform mixing of the | microorganism with the oxygenated wastewater without

AERATION TECHNOLOGY Mechanical Surface Aerators v Turbine Aerators ^ Brush Aerators

Clarification is the process of separating solids from the liquid! by the principle of creating floes from the suspended material and let these floes settle by gravity in a calculated retention Ltime. Removal of settle-able solids and floating material reduces “• the suspended solid content.

The scraper mechanism which is installed inside the sedimentation tank collects the settled sludge as well as the floating scum. Selection of the sedimentation tank configuration and collector mechanism is governed by size of the installation, characteristics of solid suspension and type of process liquid.

Asfim offers durable and high efficient clarification and sedimentation solutions with robust scraper systems tailored for any iype of circular or longitudinal sedimentation tanks ensuring the reliable continuous operation. ♦ Peripheral Driven Scrapers • Central Driven Scrapers • Travelling Scrapers

Water flow control devices play a central role in the isolation, regulation and control of water and effluent flows in treatment plants. Selection of the correct device to suit the duty is important to overcome the design criteria and provide the most effective solution. The range of available devices in Astim design and manufacturing scope is extensive; from simple direct operation by hand wheel to complex control systems by electrical, pneumatic or hydraulic actuation.

WATER FLOW CONTROL Water Flow Control Devices ♦ Penstocks • Over Flow Weirs ♦ Stop Logs • Telescopic Valves