Sewage treatment equipment

Equipment introduction

Large-scale wastewater treatment facilities typically use oxidants to oxidize organic pollutants in chemical wastewater. Through chemical oxidation and reduction, toxic organic and inorganic substances in the wastewater are converted into less toxic substances, thereby achieving the goal of wastewater purification.

Recycled water is a source of water with highly variable water quality, making it challenging to treat. Concentrations of pollutants such as total dissolved solids, COD, BOD, total silica, and ammonia fluctuate frequently. Furthermore, pre-treatment wastewater contains high concentrations of organic matter and microorganisms. Therefore, any product designed for recycled water treatment must be able to tolerate these variations and high concentrations of organic matter, organic matter, and active organisms.

Equipment composition

1. Centrifuges

Centrifuges are primarily used to separate solid particles and liquids in suspension, or to separate two immiscible liquids of different densities in an emulsion (for example, separating cream and milk). They can also be used to remove liquid from wet solids.

2. Microfiltration: A microfiltration device is a drum-type screen filtration device. Treated wastewater enters the drum axially and exits radially through the screen. Impurities in the water (such as fine suspended matter, fibers, and pulp) are trapped on the inner surface of the drum screen. Impurities trapped on the screen are carried to the upper portion of the drum by pressure-washing water, where they are backwashed back into the slag tank. During operation, 2/5 of the drum's diameter is exposed to the water surface. The drum rotates at 1-4 rpm, the screen filtration speed is 30-120 m/h, the flushing water pressure is 0.5-1.5 kg/cm², and the flushing water volume is 0.5-1.0% of the process water. In reservoir water treatment, algae removal rates reach 40-70%, and plankton removal rates reach 97-100%. This process requires minimal floor space, has a high production capacity (250-36,000 m³/day), and is easy to operate and manage. It has been successfully applied in water supply and wastewater treatment.

3. Aerator

The aerator injects microbubbles directly into untreated sewage through a diffuser impeller. The combined action of a coagulant and flocculant causes the suspended solids to flocculate physically and chemically, forming larger flocs. No scraper is required to separate the scum from the scum to form clumps. This equipment offers excellent overall integrity, easy installation, and reduced operating costs, while occupying a small footprint.

4. Sludge Dewaterer

The sludge dewaterer features automatic control, continuous production, and stepless speed regulation. It is suitable for a variety of sludge types and is suitable for industries such as water supply and drainage, papermaking, foundry, leather, textiles, chemicals, and food.

5. Flotation Machine

Large-scale wastewater treatment equipment also includes flotation machines, which remove suspended solids, grease, and various colloids from industrial and municipal wastewater. This equipment is widely used in treating industrial wastewater from oil refining, chemical processing, brewing, slaughtering, electroplating, and printing and dyeing, as well as municipal wastewater.

Scope of application

Such as beautiful villages and towns, residential areas, tourist attractions, highway service areas and other areas where domestic sewage treatment and other municipal pipelines are difficult to lay.