1, cloud tank reactor introduction
"Cloud tank" is a decentralized wastewater treatment equipment. "Cloud tank" in the factory mass production, suitable for installation in a variety of terrain, and after treatment of the standard water can be directly reused on-site greening, spraying the ground, or discharge of landscape water. The "cloud tank" is the appearance of the mud film *** raw worm bed reactor (WBR), this process is an upgraded version of the traditional sewage purification technology, but also decentralized wastewater treatment of the most widely used device, but also the largest number of installations of a sewage purification equipment. Sewage is lifted into the "cloud tank" reactor by pumps, and because the WBR is filled with proprietary biofluidized filler, most of the organic matter in the sewage is removed through the multi-stage purification of the biofluidized filler, and at the same time, there is high biomass inside the reactor, which forms an aerobic sludge film with the fluidized filler***Biochemistry system, and air is injected into the water by a fan, and the aerobic microorganisms are formed in the aerobic film. Air injected into the water, with the help of aerobic microorganisms in the water organic matter degradation, ammonia and nitrogen oxidation, the formation of anoxic and anaerobic areas within the filler, synergistic degradation of total nitrogen and total phosphorus, the treated water flows into the top of the bed of worms, where after the depth of the worm sludge purification and then discharged. Village and town domestic sewage is characterized by large changes in water quantity and quality, the general location of decentralized, unprofessional management personnel, most of which can not be operated properly, therefore, the requirements of sewage treatment facilities must be simple, easy to manage, and low maintenance. The cloud tank adopts the mud film *** raw worm bed technology (WBR), which makes the microorganisms in the system in high concentration, not only improves the overall removal efficiency of pollutants in the reaction device to ensure a good quality of effluent water, at the same time, the reactor has a very good adaptability to various changes in the load of incoming water (water quality and water quantity), shock load resistance, and is able to stably obtain high-quality effluent water quality. The deep purification of sludge by the top worm bed layer can reduce the amount of sludge. Due to the presence of a large number of biofilm in the cloud tank significantly extends the age of the sludge, which is conducive to the slow proliferation of microorganisms such as nitrifying bacteria to intercept the growth of the system nitrification efficiency can be improved. At the same time, can grow some difficult to degrade organic matter in the system hydraulic residence time, is conducive to difficult to degrade organic matter degradation efficiency.
2, cloud tank reactor features
(1) the installation of cloud tank investment is small, low cost. Cloud tank is basically in the factory mass production, the price is very competitive in the industry.
(2) the installation site is not affected by the terrain, installation time is short, quick results. Connected to the cloud tank drainage pipe is very short, the installation of the terrain requirements are not high. It takes less time to install a cloud tank, and once the cloud tank starts running, its sewage treatment function can be immediately put into play.
(3) Environmental water replenishment. The water treated by the cloud tank is usually reused or discharged to nearby rivers and streams, which has a great effect on maintaining sufficient water in the rivers and streams, enhancing the water cycle in the living area, and the surrounding natural scenery.
(4)**Resourcing. Cloud tank treated water reuse and sludge resourcing can be easier to carry out, cloud tanks are mainly used to treat sewage in villages and towns, its treated water and sludge basically does not contain toxic substances, can be based on different needs, cloud tanks can be resourced and effective use of treated water and sludge.
(5) easy maintenance. The cloud tank adopts modular and standardized design, which makes operation and maintenance more convenient, realizes maximum unattended operation, and solves the management and maintenance problems in decentralized sewage treatment operation.
(6) Integration of four patented technologies to ensure safe, stable operation and good water purification effect:
①Microbial bacterial strain technology feeding special bio-bacterial strains, under microelectricity control conditions (low DO, high MLSS), so that the biochemical tank microbial quantity reaches a great deal of functional bacterial groups to form an advantage (resistance to low temperatures, load shocks, etc.), strict control of mass transfer, and highly efficient degradation of organic pollutants in the water. Organic pollutants in water.
② Mud membrane **** biological worm bed technology (WBR) in the cloud tank at the same time the existence of activated sludge and biofilm two forms of biological water purification, to achieve a biochemical tank at the same time nitrogen and phosphorus removal, at the same time, the top of the cloud tank set up with a worm bed, the bed of the worms can eat sludge, to ensure that the water containing sludge is lower than the standard requirements, without the need to increase the membrane filtration system.
3 Proprietary micro-oxygen technology through the Harvard University special TPU patented aerator, to achieve the biochemical tank surface uniform aeration, generated bubbles small, large area, slow rise, greatly improving the efficiency of dissolved oxygen to create a stable and good survival environment for microorganisms.
④Modular design cloud tank for modular design, optimized integration of biological strains, mud film *** birth, worm beds, micro-oxygen oxidation and other technology modules, carbon removal, denitrification, phosphorus removal and solid-liquid separation and other units integrated into a reactor, greatly simplifying the process, saving investment, and multiple cloud tanks can be integrated into a larger scale wastewater treatment plant, so that the operation and management of the convenient, simple control. Control is simple.
3, the operating parameters of the cloud tank for the standard module sewage treatment equipment, each operating cycle of 2h, the standard configuration of the cloud tank water intake 10min, reaction 30min, aeration 1h, precipitation 20min, the next water intake cycle for the drainage cycle of the cloud tank (adjustable parameters, parameterization and adjustment by the PLC control module). The mixing mode is air mixing, the equipment mainly has inlet pump and aeration fan, the instrument mainly has electromagnetic flowmeter and ORP meter, the sedimentation is the net sedimentation section of SBR mode, 20min, the outlet water is discharged through the upper fixed bed, according to the quality of the incoming and outgoing water optional polyurethane filter media filtration columns, see the drawings for details. Other indicators are shown in the following table: