Engineering Cases

ENGINEERING CASE

Aerator material

1. Fluidized Circulation Aerator Utilizing swirl centrifugal force and the pulverizing action of multi-layer cutters, it forms the lifting, stirring, and mixing oxygenation of the gas-water mixture. The mud-water-gas mixture circulates inside and outside the equipment. During the upward process inside the equipment, the gas and liquid are repeatedly and multiply cut by the special structure inside the equipment, forming small bubbles. The intense agitation of gas and liquid also increases the rapid transfer and dissolution of oxygen. This equipment is a highly efficient, maintenance-free, and long-life aeration equipment with advantages such as large service area, low resistance, stable and reliable operation, and no blockage. It is mainly used in aeration systems for industrial wastewater and municipal wastewater treatment, and its advantages are more obvious in wastewater with high suspended solids, high hardness, and easy scaling. It can form aerobic granular sludge, significantly improving the activity of aerobic sludge and the efficiency of aerobic treatment.

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Aerator material

3.2 Aerator

1. Fluidized Circulation Aerator
Utilizing the swirling centrifugal force and the pulverizing effect of the multi-layer cutter, it forms a gas-water mixture for lifting, stirring, and mixing oxygenation. The mud-water-gas mixture circulates inside and outside the equipment. During the upward process inside the equipment, the special structure repeatedly cuts the gas and liquid multiple times, forming small bubbles. The intense agitation of gas and liquid also increases the rapid transfer and dissolution of oxygen.
This equipment is a highly efficient, maintenance-free, and long-life aeration equipment with advantages such as large service area, low resistance, stable and reliable operation, and no blockage. It is mainly used in the aeration system of industrial wastewater and municipal wastewater treatment, and its advantages are more obvious in wastewater with high suspended solids, high hardness, and easy scaling. It can form aerobic granular sludge, significantly improve the activity of aerobic sludge, and enhance the efficiency of aerobic treatment.

Serial Number	Item	Microporous Aerator	Fluidized Circulation Aerator
1	Clogging Issues	Frequent Clogging	No Clogging
2	Single Unit Service Area	0.3-0.6 m2	6-14 m2
3	Oxygen Transfer Efficiency	About 15%	20-30%
4	Does the bottom of the tank need to be fixed?	Yes	No
5	Intermittent Operation	If intermittent operation occurs, the mud-water mixture will flow back into the aerator head diaphragm, causing blockage of the aerator head. Malfunction intermittent operation will exacerbate clogging.	The inside of the aerator is a large channel; the mud-water mixture can freely flow back into the aerator without causing blockage. Can be operated intermittently at will.
6	Aging	Diaphragm is prone to aging.	All structures use anti-aging materials.
7	Bottom Sludge Sedimentation Issues	Sludge sedimentation at the bottom of the aerator reduces sludge utilization. The sludge deposited at the bottom is in an anaerobic state, affecting the treatment effect of the aerobic system.	A strong circulating flow is formed around the aerator, with no sludge sedimentation.
8	Mixing Capacity	Weak mixing capacity.	Strong mixing capacity. The entire system's mud-water mixture is in a state of strong turbulence, with uniform system conditions.
9	Failure Rate	Diaphragm is prone to aging and clogging, resulting in a high failure rate.	The equipment has no moving parts. The materials selected have high hardness, wear resistance, aging resistance, and high-temperature resistance, resulting in essentially no failures.
10	Tank Depth	Tank depth will lead to increased blower pressure, and increased aerator outlet temperature will accelerate diaphragm aging.	High-temperature resistant materials are used; high blower outlet temperature will not cause equipment aging. Moreover, increasing the tank depth will actually increase the utilization efficiency of oxygen.
11	Maintenance Cost	Annual inspection is required, and regular replacement is needed. Inspection requires tank cleaning, which is very troublesome and involves significant labor costs.	Maintenance-free Saves maintenance and tank cleaning costs.
12	Operating Cost	-	Can save 25% of electricity consumption.
13	Pressure Drop	High pressure drop, consuming blower pressure, and high energy consumption.	Low pressure drop, saving blower pressure, and low energy consumption.
14	Matching Pipeline	Responsible for pipeline matching.	Due to the large service area, the supporting pipeline is less and simpler.
15	Product Lifespan	2-3 years	More than 15 years

2. Air-supplied Jet Aerator
Advantages of Air-supplied Jet Aerator:
(1) High oxygen transfer rate. In addition to the high diffusion efficiency of small air bubbles in the liquid, the turbulent state of the jet aerator constantly updates the gas-liquid contact surface, which is also conducive to oxygen transfer. Compared with most other microporous diffusion theories, the constantly updated gas-liquid contact surface of the jet aerator results in high oxygen transfer efficiency.
(2) Strong process applicability. The jet aerator can independently control oxygen supply and mixing, and the amount of air can be adjusted as needed, while stirring can be maintained through circulating liquid. Combined with manual and automatic DO meter control, energy consumption can be saved during low loads. Stopping air supply to maintain stirring is ideal for anaerobic/aerobic alternating cycle biochemical systems.
(3) Full mixing. In addition to the vertical mixing energy generated by the rising bubbles, the circulating water also generates energy in the horizontal direction. The jet aerator does not need to cover the entire bottom of the tank to achieve full mixing, saving a lot of installation time and costs.
(4) Convenient maintenance. The jet aerator fully utilizes ordinary auxiliary equipment. The high-speed liquid and gas in the injector reduce the potential for clogging, and the matching pipeline filter fully ensures its clog-free and maintenance-free characteristics.

Meiquan's progress and development are based on a deep understanding and maximum satisfaction of customer needs. Meiquan closely follows the pace of advanced technology, constantly improving after-sales service and providing timely and diversified training for employees, using its own expertise to help customers meet environmental challenges. The company's core technologies, such as the circulating granular sludge reactor (MQIC), upflow anaerobic sludge bed reactor (H-UASB), segmented inflow biological denitrification process (BRN), and ammonia oxidation biological denitrification process (AMOXP), have all been fully verified in engineering practice and have high efficiency, low carbon, innovation, and leading advantages in the environmental protection field.

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