Best SBR Sequential Batch Activated Sludge Equipment：
Its originally proposed in 1914 by the British scholar Ardern and Lockett, but given the aerator easy jam, low level of automatic control, operation management complex reasons, was soon replaced by continuous activated sludge process.
Until the 1970 s, along with all kinds of new type aerator, floating out of the water weir (decanter) automatic control and monitoring of hardware and software technology development, especially the continuous improvement of the computer and industrial control technology, the sewage treatment process for automatic operation has become possible, SBR process attracted much attention for its unique advantages, and rapid development and application, in the world now has hundreds of SBR sewage treatment plant in run successfully.
The U.S. national environmental protection agency (EPA) considers the SBR process to be a low-investment, low-cost, cost-effective and cost-effective
environmental management technology.：
SBR is a kind of activated sludge method, its reaction mechanism and the mechanism of removing pollutants are basically the same as the traditional activated sludge method, but the operation mode is very different.
It splits the process units in chronological order, and the whole process is intermittent for a single operation unit.
Typical SBR set aeration and precipitation in a pool, do not need to set two sinks and sludge backflow equipment.
In this system, the reaction tank in a certain time interval is full of water, running in batch processing way, after processing, the mixture of precipitation, with the help of a special cleaning fluid drainage equipment out, precipitation of biological sludge are left in the pool, used for mixed with sewage wastewater treatment again, so that, in turn, run repeatedly, constitutes the sequencing batch type process.
The typical SBR system consists of five phases: water inlet, reaction, precipitation, drainage and idle
The SBR process has the following main advantages:
1. It is very rare to deal with the structure. A SBR reactor set is aerated and precipitated, which saves the initial sink, sink and return sludge pump room.
Therefore, it is very economical to deal with the area of the structure and the connecting pipes and fluid conveying equipment between the structures, which can generally reduce the total investment of the project by 10% ~ 20%.
2. Due to its intermittent water inflow, the amount of time and amount of water can be adjusted, so the change of water quality is adaptable, and there is no need to set up the adjustment pool.
3. Small area, 30 % to 50% less than traditional activated sludge method, is one of the most important processes in the current sewage treatment process.
4. Nitrogen removal and phosphorus removal.
By adjusting the aeration time and the intermittent time, the wastewater is in the reaction tank, which is the condition of alternating aerobic, hypoxia and anaerobic conditions.
At the same time, the change of environmental conditions can effectively inhibit the growth of filamentous bacteria and reduce the influence of sludge expansion.
5. Running, the sewage treatment plant was finished flow generally lower than the design value, SBR can according to the needs of water quality, increase or decrease in the number of cell body operation, so that we can avoid unnecessary energy consumption, this is what other process does not have.
The main disadvantages of SBR process：
1. The reaction pool of water, aeration and drainage process changes frequently, not using artificial management, so the requirement of sewage plant equipment instrument is higher, and demand management has certain technical level.
2. When the water volume is large, the problem of low volume utilization is revealed.
1.2 introduction and comparison of SBR improvement process
SBR operation flexibility, strong adaptability, to meet the requirements of different water quality and the actual project, to improve the process, with the continuous progress of basic research as well as people understand gradually to the activated sludge removal mechanism of pollutants, given the classic SBR technology in practical engineering application of certain limitations, in order to adapt to the needs of practical engineering, the SBR technology derived from a variety of new forms gradually.
Currently, the more modified technologies are: ICEAS, UNITANK, dat-iat, CAST (CASS), etc.
Called the ICEAS Intermittent cyclic delay Aeration activated sludge process (Intermittent Cycle Extended Aeration), its biggest feature is in the reactor inlet added a reaction zone, operation mode for continuous water (precipitation period, drainage period still straight into the water), Intermittent drainage, no obvious reaction and idle.
The effluent from the prereaction area enters the main reaction area at very low velocity, and the mud water separation in the main reaction area will not have obvious effect.
Because of the simple and easy management of ICEAS facilities, especially the cost of treating municipal wastewater and industrial wastewater more than the classic SBR system, it has received a lot of attention both at home and abroad.
More than 300 sewage treatment plants have been put into operation since the rise of Australia in the early 1980s.
The operation of ICEAS is shown in figure 1-2: the SBR reaction pool is divided into two parts along the length direction, the front is the prereaction area, and the rear is the main reaction area.
The prereaction area can regulate the effect of water flow, and the main reaction area is the main body of aeration and precipitation.
ICEAS is a continuous water inlet process, not only in the reaction stage, but also in the precipitation and decantation stage.
Sewage after entering pre-reaction area, through the partition wall at the bottom of the joint to advection flow into the main reaction pool, in the main reaction pool intermittent aeration and water precipitation decantation, become straight into the water, intermittent water of SBR reaction pool, the water distribution greatly simplified, the operation is more flexible.
The function of each operating unit in ICEAS process is:
A, aeration stage By intermittent oxygen aeration system to the reaction in the pool, at this time by the microbial action by biological oxidation, organic matter and ammonia nitrogen in wastewater by microbial nitrification and denitrification, to achieve the effect of nitrogen.
B. In the precipitation phase, the oxygen can be stopped in the reaction tank, the activated sludge will drop in static state and the mud water will be separated.
C. After the decanting stage is deposited to a certain depth in the sludge, the water decanter system starts to work, discharging the liquid in the reaction tank.
In the process of decantation water, due to the sludge settling at the bottom, concentration is larger, can according to need to start the sludge pump will be excess sludge discharge to the sludge pool, to keep the reactor must be activated sludge concentration.
After the decantation finishes, it enters the next new cycle, begins to aerate, and begins to complete the treatment of the sewage.
Voltage: 380V 50Hz, the voltage can be as local demand
Payment term: Unionpay transfer
Delivery date: Negotiable
Packing: export standard
Market: Middle East/ Africa/Asia/South America/Europe/North America
Warranty: 1 year
MOQ: 1 set
Parts of customers:
1.About after-sales service, how can you solve the problem of your overseas customers in a timely manner?
The warranty period of our machines is usually 12 months. During this period, we will immediately arrange international express delivery, or dispatch engineers to solve the problem on site to ensure the problem is solved as soon as possible.
2.Can you arrange the installation of the machine after we place the order?
All machines will be tested before delivery, and on-site installation will be arranged according to the actual conditions.
3.How can I trust your company?
with 10 years of professional design, we can provide you with the right advice and the lowest price.
1).Third party assessment, national patent and all equipment ISO.
2).Our equipment and services have been well received at home and abroad, and we have given us trust to ensure your satisfaction.
4.How does the factory handle quality control?
strictly install ISO standard to carry out.
A year of quality assurance and life support.
Company: Wuxi Blue Sky Water Treatment Equipment Co., Ltd.
Add: No 5,rongqiang Road, Wuxi city, Jiangsu Prov, china
remarks：Main Equipments Packages Testing Devices Delivery:
500kg or more