Guided biological aerated filter (BAF) fully draws lessons from eight design methods, such as BAF method, contact oxidation method, biofilm method, intermittent aeration method, artificial rapid filtration method, precipitation separation method, nitrification and denitrification method, and water supply rapid filtration method, and develops a new sewage treatment process and technology. The diversion biological aerated filter has been used in Beijing, Shandong, Hebei, Guizhou, Shanxi, Sichuan, Inner Mongolia, Heilongjiang, Jiangsu, Jilin, Henan, Hubei, Tianjin, Xinjiang and other places in China, involving sewage treatment in the fields of life, hospital, chemical industry, slaughter, food, flax, alcohol, pharmacy and pickled mustard tuber. A large number of applications have proved that the CODcr of effluent quality is generally below 20mg/L, and the lowest is 5.95 mg/L; Generally, BOD5 is below 10mg/L, and the lowest is 3.50mg/L.: SS is generally below 20mg/L, and the lowest is 6.55 mg/l.
According to the invention, sewage is aerated twice, precipitated twice and filtered twice in the same treatment tank, so that the process flow that other sewage treatment needs four tanks to complete is solved, especially under the condition of continuous water inflow, intermittent aeration and activated sludge backflow are realized, and the whole operation does not idle. Its advantages are more prominent than traditional treatment methods, and the treatment effect is particularly remarkable. In August 2009, it was listed as an "innovative project" by the Ministry of Science and Technology; In June 5438+February 2009, the product was listed in the Catalogue of Environmental Protection Technologies Encouraged by the State by the Ministry of Environmental Protection. 20 10 was recognized as "national key new product" by the Ministry of Science and Technology, the Ministry of Environmental Protection, the Ministry of Commerce and the General Administration of Quality Supervision, Inspection and Quarantine in May. 20 12 was listed as "environmental protection technology encouraged by the state" by the Ministry of Environmental Protection in July.
The main advantages of microbial generator are as follows:
1, high degree of automation and good sewage treatment effect.
The equipment adopts three-stage generation, alternate operation, step-by-step derivation and logarithmic growth technology, so that the microbial density produced by the generator can reach as high as 1.8× 1020CFU/ml. After the high-density microorganisms are released into the microbial purification treatment equipment, the biomass in the microbial purification treatment equipment rapidly increases to more than 2.0× 104mg/L, which can completely decompose the pollutants in the sewage into
2, the adaptation range is wide
This equipment is an ideal biological sewage purification and treatment equipment, which can produce different kinds, different bacteria, different temperatures and different microorganisms with different sewage treatment needs according to different types, different properties and different environments, and is especially suitable for urban domestic sewage, rural domestic sewage, medical sewage, industrial wastewater, livestock and poultry breeding wastewater, high salinity wastewater, high ammonia nitrogen wastewater, toxic and harmful wastewater, heavy metal wastewater, landfill leachate and other wastes (sewage).
The equipment can also be directly matched with old sewage treatment projects such as contact oxidation method, AB method, A/O method, oxidation ditch and SBR. It can achieve various purposes such as upgrading and expanding sewage treatment, reducing sludge, removing nitrogen and phosphorus, and reusing reclaimed water. Do not change the sewage treatment process and civil engineering. The equipment can also be used in landscape, rivers, lakes, rivers, salt lakes, bays, land and other fields to remove micro-pollution and protect the public environment.
3. Significant economic benefits.
Micro-equipment produces high-density dominant microbial flora, which can quickly eat pollutants and sludge in sewage without odor, and does not need sludge dehydrator, sludge conveyor, mud cake transporter, waste gas treatment equipment and high-power blast aeration equipment. Compared with the traditional method, the energy consumption is 1/8 of that of the activated sludge method, the equipment investment can be saved by 70%, and the sewage treatment tank can be operated on a shallow tank, thus reducing the volume of the sewage treatment tank.
4, convenient management, safety and reliability
The high-density microbial flora generated by the equipment can rapidly reduce the biological oxygen consumption (BOD), chemical oxygen demand (COD) and suspended solids (TSS) in the sewage after the sewage enters the treatment tank through the jet, and has strong nitrogen and phosphorus removal functions. It can also convert five kinds of water into more than three kinds in a very short time, eliminate the odor in sewage within seven days, eat about 50% of sludge in sewage within 10 day, and eat about 50% of sludge every day.
Using this equipment to treat sewage has no worries about sludge bulking and is not limited by the age and education of operators. Convenient management, safety and reliability.
5, no secondary pollution, creating a green environment.
With the emergence of more and more high-density microbial flora, the biological oxygen consumption (BOD) in sewage is less and less, and a large number of microorganisms lose their survival energy due to the lack of BOD, and become carbon dioxide and water. Non-extinct microorganisms can also be used as bait for fish and plankton, thus forming a benign ecological treatment and purification process, without odor, sludge and secondary pollution, and creating a green environment.
6, not affected by climate, completely biochemical treatment.
Traditional biochemical treatment of sewage is affected by climate and water temperature changes. When the temperature drops 10℃, the enzymatic reaction speed of microorganisms drops 1-2 times. Climate leads to insufficient microbial activity and poor sewage treatment effect, which not only threatens the sewage treatment plants in the north, but also challenges the sewage treatment plants in the south in winter. The patented product microbial purification treatment equipment produced by Guizhou Great Wall Environmental Protection Technology Co., Ltd. completely solved this problem. After the high-concentration microbial flora produced by the generator system is released into the microbial purification treatment system, the biomass information speed reaches more than 2.0× 104mg/L, which makes the biological concentration in the microbial purification treatment equipment increase by 10 times compared with the activated sludge, and fills the technical problems of insufficient biomass and poor sewage treatment effect caused by low water temperature.
7, solve the lack of activity, to ensure that the water quality standards.
Traditional biochemical methods are used to treat wastewater with high concentration, high ammonia nitrogen, high salt content, toxicity and heavy metals. Due to the survival and small number of microorganisms in these wastewater, the effluent quality after sewage treatment is poor and the effect is unstable, so it is difficult to meet the discharge standards. Microbial purification treatment equipment completely solved this problem in a unique way. The microbial generation system can continuously send the high-concentration microbial flora above 1.8× 1.020 cfu/ml to the microbial purification treatment equipment, which increases the biomass by more than 10 times compared with other sewage treatments, and the powerful microbial flora accelerates the degradation and digestion of pollutants in sewage. At the same time, the oxygen supply of the microbial purification reaction equipment significantly accelerates the decomposition of pollutants into CO2 and H2O, and nitrates and sulfates become nutrients for microbial growth, so that microorganisms can be further derived. Even if it is affected by cold weather, low temperature and impact load, and inhibited by high concentration, high ammonia nitrogen, high salt content, toxicity and heavy metals, it can't stop microbial armies from competing with each other, forming a strong sewage treatment lineup, and then degrading pollutants in digested sewage.
8. Innovative micro-pollution control methods.
Traditional river regulation can not be separated from dam opening, water interception and dredging, and the project cost is high, the construction period is long and the amount of silt is large. Microbial purification treatment equipment is directly installed in the upstream of micro-pollution sources such as landscapes, rivers, lakes, rivers, saltwater lakes, bays and land. The pollution source is cut off and blocked from the source, and the complete treatment is realized through the functions of microbial degradation of pollution, mud eating, deodorization, phosphorus removal and nitrogen removal, which provides reliable equipment for micro-pollution treatment.