Biological packing materials are widely used biochemical treatment materials in water treatment, primarily serving as carriers for microbial attachment and growth. Their main functions include increasing sludge concentration in biological systems, reducing sludge load, and promoting the effective degradation of organic matter. Biological packing materials also possess excellent physicochemical properties, such as large specific surface area, high porosity, and good hydrophilicity. These characteristics provide a favorable environment for microbial growth, further enhancing their wastewater treatment capabilities.Types and characteristics of biological packing materials1. Diverse types: Common biological packing materials include honeycomb inclined tube packing, synthetic fiber balls, fiber bundles, and biological ropes. In addition, there are soft fiber packing, semi-soft packing, combined fiber packing, elastic three-dimensional packing, suspended packing, and fiber ball packing.2. Structural Design: These packing materials typically have a large specific surface area and high porosity to ensure that microorganisms can attach and grow rapidly. For example, MBBR (Aerobic Biological Fluidized Bed) packing materials use a three-dimensional hollow structure, suspended in water, where anaerobic bacteria can grow inside for denitrification , while aerobic bacteria grow on the outside to remove organic matter.3. Material characteristics: Biological fillers are mostly made of corrosion-resistant, lightweight, and high-strength materials, such as polyurethane foam and polymer materials . These materials not only have good mechanical properties and chemical stability, but also have enhanced hydrophilicity and biological activity through special process modification.Functional advantages:1. Hydrophilicity and lipophilicity: Some biological fillers have good hydrophilicity and lipophilicity, which helps to store oxygen and improve the adhesion of microorganisms.2. Strong load resistance: For example, MBBR packing exhibits strong load resistance and high processing efficiency during operation.3. High-efficiency denitrification: Some packing materials can grow anaerobic bacteria inside, producing denitrification, thereby achieving the denitrification effect.Features1. Specific surface area and porosity: A larger specific surface area and higher porosity are conducive to the attachment and growth of microorganisms.2. Material characteristics: Corrosion-resistant, lightweight, and high-strength materials are preferred, while also possessing good hydrophilicity and biological activity.3. Economic efficiency and environmental friendliness: An ideal biological packing material should have low operating costs and a small footprint, while meeting national environmental protection standards.Biological packing materials play a vital role in wastewater treatment, and their diverse types and superior performance make them an indispensable part of modern environmental protection technology.

Microporous aerators are water treatment devices that achieve highly efficient aeration through a unique membrane structure. Their core function is to improve oxygen transfer efficiency and prevent mixed liquor backflow. Equipped with a self-closing pore structure and anti-buoyancy technology, these devices effectively prevent mixed liquor backflow and micropore clogging. Through the cooperation of an adjustable support frame and UPVC piping system, the device can adapt to complex conditions such as uneven tank bottoms and thermal expansion and contraction, and supports stable operation in extreme operating temperature environments up to 90℃. Common types of microporous aerators include: membrane-type microporous aerators, rotary aerators, tubular aerators, disc aerators, and titanium aerators.Working principleA microporous aerator is a device that evenly disperses air into water through tiny pores. Its core principle is to use a high-pressure blower to deliver air to the bottom of the aerator. As the air passes through the pores of the microporous aerator, it forms a large number of tiny bubbles. These bubbles rise in the water, making full contact with the water, thus transferring oxygen to the wastewater, promoting the metabolic activity of microorganisms, and accelerating the decomposition of organic matter. Compared with traditional aeration methods, microporous aerators produce bubbles with smaller diameters, typically between 1-3 millimeters. Due to the larger surface area to volume ratio of the bubbles, oxygen transfer efficiency is significantly improved.Features1. The microporous aerator is made of high-quality imported rubber, which has excellent corrosion resistance and oxidation resistance, and is also lightweight and high-strength.2. The bubbles are small in diameter and dense and uniform, which has the advantages of not being easily clogged, and is especially effective in ozone aeration applications.3. With a wide range of applications, the microporous aerator is widely used in ozone sterilization for drinking water and reclaimed water reuse, aeration in sewage treatment aeration tanks, and fermentation oxygenation, and is an essential piece of equipment for blower aeration and oxygenation.

Rotary mechanical bar screens, also known as rotary bar screens, are advanced solid-liquid separation equipment for water treatment. They are mainly used at the inlets of urban sewage treatment plants, municipal stormwater and sewage pumping stations, waterworks, and power plant cooling water systems. This equipment is also widely used in water treatment projects in various industries such as textiles, printing and dyeing, food, aquaculture, papermaking, slaughtering, and leather making. It is an ideal solid-liquid separation device in the water treatment industry.Structure and working principleThis equipment is rotary, consisting of specially shaped plow-shaped rake teeth or stepped screens, assembled with different gaps according to the water flow rate. It is installed at the inlet of a pumping station or water treatment system. When the drive unit moves the rake chain or screen from bottom to top, the impurities in the water are lifted up, while the liquid flows through the gaps. After the equipment rotates to the top, the rake chain changes its direction of operation and moves from top to bottom. The material falls off the rake teeth by its own weight. When the rake teeth rotate from the reverse side to the bottom, another cycle of continuous operation begins, thus continuously removing impurities from the water and achieving the purpose of solid-liquid separation.Main features1. The drive unit adopts a cycloidal pinwheel or helical gear reducer motor for direct drive, which features low noise, compact structure, and smooth operation.2. The frame is an integral frame structure, which is highly rigid, easy to install, and requires less daily maintenance.3. The equipment is easy to operate and can be controlled locally or remotely.4. To prevent accidental overload, it is equipped with dual protection of mechanical shear pins and overcurrent, ensuring safe and reliable operation of the equipment.

Dissolved air flotation (DAF) is a commonly used water treatment device for removing suspended solids and dissolved gases from water. It employs dissolved air flotation technology, which involves dissolving gases in water to form microbubbles, and then using these bubbles to contact suspended particles to achieve solid-liquid separation.Working principleThe working principle of a dissolved air flotation (DAF) system is based on the adhesion of air bubbles to suspended particles and their faster rising speed than water, causing the particles to float and separate from the water. In the DAF system, gas is dissolved in water under pressure to form a saturated solution. Then, the dissolved gas is released by depressurization, causing the gas to rapidly transition from a saturated to a supersaturated state, forming microbubbles of 20-30 μm . These microbubbles combine with suspended solids in the wastewater, reducing their specific gravity until they float to the surface, forming a large amount of scum. This scum is then removed by a chain scraper installed on the flotation tank, achieving the desired treatment effect .Features :1. It occupies a small area, produces a high amount of water per unit area, and has a low moisture content in the slag.2. It has a high surface area and adsorption capacity, and can effectively remove suspended solids from wastewater of different concentrations .3. It has a wide range of applications in fields such as papermaking, printing and dyeing, leather making, electroplating, textiles, petroleum, chemicals, and food.4. The process is simple, the equipment is available in a variety of materials (Q235, SS304, SS316, etc.) , and it is easy to manage and maintain .5. It has a high degree of automation, enabling it to operate 24 hours a day without interruption, while its energy consumption is relatively low.

A microfiltration machine is a solid-liquid separation device that uses sieves or filter elements to trap suspended solids, colloidal particles, and other impurities in water; it falls under the category of physical filtration. Its core function is to remove suspended particles, fibers, algae, plankton, and other organisms with particle sizes ranging from 0.1 mm to tens of micrometers from water through mechanical sieving. It is commonly used in pretreatment or advanced treatment stages of water treatment, reducing the load on subsequent treatment processes and improving water quality.Core Structure and Working Principle·Key structure: Mainly composed of a rotating drum (or filter cartridge), screen/filter plate, drive unit, backwashing system , inlet and outlet water components, etc. The screen material is mostly stainless steel, and the aperture is designed according to the treatment requirements (usually 0.05mm to 0.5mm).·Working principle: When sewage flows through the equipment, water is discharged through the screen mesh, and impurities are trapped on the screen surface; when impurities accumulate to a certain extent, they are removed by backwashing (such as water or air flushing) or mechanical scraping to ensure filtration efficiency.Classification and characteristicsBased on differences in water flow direction and structure, microfilters are mainly divided into internal flow microfilters and external flow microfilters . A comparison of their characteristics is as follows: Type Internal flow microfiltration machine External flow microfiltration machine Water flow direction Wastewater flows from the inside of the drum to the outside (inside to outside). Wastewater flows from the outside of the drum to the inside (outside to inside). Structural features The drum contains a spiral plate that collects impurities, and the filter element is a porous plate. The grid cylinder has a trapezoidal cross-section, providing strong anti-clogging capabilities. Backwashing method The water pump drives the filtered water to backwash the filter plates. Pressurized water backwashes away impurities trapped in the filter screen. performance advantages It features low head loss, energy efficiency, and a high degree of automation. Stainless steel is corrosion resistant, occupies little space, and produces slag with low moisture content. Applicable Scenarios Industrial wastewater treatment, tap water filtration, and advanced sewage treatment. Wastewater pretreatment in industries such as papermaking, leather making, and food processing. Application areas·Municipal water treatment: raw water filtration at waterworks (removal of algae, water fleas, etc.), and pretreatment or advanced treatment of municipal sewage (reduction of suspended solids load).·Industrial sector :Textile, papermaking, and printing and dyeing industries: Removal of fibers, slurries, suspended solids, etc.Food and brewing industries: filtering residues and colloidal substances;Metallurgical and chemical industries: Solid-liquid separation before wastewater recycling;Aquaculture: Purifying aquaculture water and removing impurities such as uneaten feed and feces.As water treatment needs become more refined, microfiltration machines are developing towards higher efficiency and intelligence . For example, they can be combined with IoT technology to achieve real-time monitoring of operating status, or used in conjunction with other filtration technologies (such as membrane filtration) to improve the removal capacity of trace pollutants, while optimizing backwashing efficiency to reduce energy consumption.

Product Introduction: Sludge dewatering machines are continuously operating sludge treatment equipment. They are popular due to their low sludge moisture content, stable operation, low energy consumption, relatively simple control and management, and convenient maintenance. Because sludge remains in a liquid state and has a large volume after concentration or digestion, it cannot be transported or disposed of. To further reduce the moisture content and make the sludge as low as possible, it is necessary to dewater it to reduce its volume and facilitate transportation.Working principle 1. Screw press sludge dewatering machine: The filter body is formed by stacked fixed rings and moving rings, with a screw shaft running through them. Through gravity concentration and the internal pressure created by the back pressure plate during the sludge's propulsion, thorough dewatering is achieved. The filtrate is discharged from the filter gaps formed by the fixed and moving rings, and the sludge cake is discharged from the end of the dewatering section. 2. Belt sludge dewatering machine: The sludge layer is sandwiched between two taut filter belts and passes through a series of regularly arranged rollers in an S-shape. The tension of the filter belts themselves creates a squeezing and shearing force on the sludge layer, squeezing out the capillary water in the sludge layer, thereby achieving sludge dewatering. 3. Centrifugal sludge dewatering machine: Composed of a rotating drum and a screw conveyor with a hollow shaft. Sludge is fed into the drum through the hollow shaft, and under the centrifugal force generated by high-speed rotation, the sludge is thrown into the drum cavity. Due to the difference in specific gravity, solid-liquid separation occurs. Driven by the screw conveyor, the sludge is transported to the conical end of the drum and continuously discharged from the outlet; the liquid in the liquid ring layer continuously overflows from the weir and is discharged outside the drum by gravity. 4. Plate and frame sludge dewatering machine: It consists of filter plates and filter frames arranged alternately to form a closed filtration chamber. The sludge is pumped in by a high-pressure pump and squeezed by the filter frames through the hydraulic system of the equipment, so that the water in the sludge is discharged through the filter cloth, thus achieving the purpose of dewatering. The squeezed filter cake can be removed by vibration or knocking.Main function 1. Reduce moisture: Sludge dewatering machines can effectively remove moisture from sludge, thereby reducing the volume and weight of sludge, making it easier to transport and process.2. Improved processing efficiency: By reducing the moisture content of sludge, sludge dewatering machines improve the efficiency of sludge treatment and reduce the cost of subsequent treatment.3. With a wide range of applications, this equipment is widely used in various industries such as sewage treatment plants, paper mills, metallurgical plants, and slaughterhouses.4. Sludge dewatering machines have advantages such as low energy consumption, relatively simple control and management, and convenient maintenance. These features make sludge dewatering machines play a vital role in wastewater treatment and industrial production.