How to treat the biogas slurry in pig farm to meet the discharge standard

The so-called biogas digester is an anaerobic tank in environmental protection. The treatment of pig farm wastewater with biogas digester is the anaerobic treatment of pig farm wastewater. If pig wastewater is to meet the discharge standard, its treatment effect should be determined according to the discharge direction. For the wastewater discharged into rivers, landscapes, rivers, lakes, rivers, saltwater lakes, bays, land and villages, it is best to add diversion biological aerated filters and microbial generators after biogas digesters to achieve the purpose of treatment. For pig farm wastewater discharged into municipal sewage treatment plant, it is only necessary to add a diversion biological aerated filter after the biogas digester to complete the task.

The diversion biological aerated filter fully draws lessons from eight design methods, such as biological aerated filter method, contact oxidation method, biofilm method, intermittent aeration method, manual 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 by combining two-stage or three-stage sewage treatment process. 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.

The diversion biological aerated filter enables sewage to be aerated twice, precipitated twice and filtered twice in the same treatment tank, which solves the technological process that other sewage treatment needs four tanks to complete, especially in the case of continuous water inflow, intermittent aeration and activated sludge reflux 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+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 Ministry of Science and Technology, Ministry of Environmental Protection, Ministry of Commerce and AQSIQ in May. 20 12 was listed as "environmental protection technology encouraged by the state" by the Ministry of Environmental Protection in July.

Based on the principles of biological purification and fluid mechanics, the microbial generator effectively removes soluble organic matter and some insoluble organic matter from wastewater by using microorganisms in the process of life activities. It has advanced technology, stable performance and safe use, and is especially suitable for various wastewater (sewage) treatment and micro-pollution treatment. It has the following advantages:

1. The equipment adopts three-stage generation, alternate operation, step-by-step derivation and logarithmic growth technology, so that the microbial density generated by the generator can reach 1.8× 1020CFU/ml. After the high-density microorganisms are released into the biochemical pool, the biomass in the pool can be rapidly increased to more than 2.0×104 mg/L.

2. This equipment is an ideal biological sewage treatment equipment, which can produce different kinds, different bacteria, different temperatures and 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-salt wastewater, high-ammonia nitrogen wastewater, toxic and harmful wastewater, heavy metal wastewater, landfill leachate and other wastes (sewage)

The equipment can also be directly used with old sewage treatment projects such as contact oxidation method, AB method, A/O method, oxidation ditch and SBR. And can realize various purposes such as sewage treatment upgrading and capacity expansion, sludge reduction, nitrogen and phosphorus removal, reclaimed water reuse and the like. 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. The microbial generator produces high-density dominant microbial flora, which can quickly eat up pollutants and sludge in sewage without peculiar smell. It 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 of activated sludge method is 1/8, and the equipment investment can be saved by 70%. It can also be operated in shallow pools to treat sewage.

4. The high-density microbial flora generated by this 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 a powerful function of nitrogen and phosphorus removal. It can also convert five types of water into more than three types in a very short time, eliminate the odor in sewage within 7 days, and eat about 50% sludge in sewage within 65,438+00 days.

There is no concern about sludge bulking when using this equipment to treat sewage, and it is not limited by the age and education level of the operators. Convenient management, safety and reliability.

5. 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 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, creating a green environment.

6. Traditional biochemical treatment of sewage is affected by climate and water temperature changes. When the temperature decreases 10℃, the enzymatic reaction speed of microorganisms decreases by 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 bio-generator produced by Guizhou Great Wall Environmental Protection Technology Co., Ltd. completely solved this problem. After the high-concentration microbial flora produced by the bio-generator is released into the aeration tank, its biomass information speed reaches more than 2.0× 104mg/L, which makes the biological concentration in the aeration tank 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. Traditional biochemical methods are used to treat wastewater with high concentration, high ammonia nitrogen, high salt content, toxicity and heavy metals. Because of the small survival and quantity 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 generator completely solved this problem in a unique way. The generator can continuously send the generated high-concentration microbial flora of more than 65,438+0.8× 65,438+0.020 cfu/ml into the aeration tank, which increases the biomass by more than 65,438+00 times compared with other sewage treatment, and the powerful microbial flora accelerates the degradation and digestion of pollutants in sewage. At the same time, aeration and oxygen supply significantly accelerate the decomposition of pollutants into CO2 and H2O, and nitrate and sulfate become nutrients for microbial growth, which leads to further derivation of microorganisms. Even under the influence of cold weather, low temperature and impact load, as well as the inhibition of high concentration, high ammonia nitrogen, high salt content, toxicity and heavy metals, it is impossible to prevent microorganisms from competing with each other and forming a strong lineup of sewage treatment army to degrade and digest pollutants in sewage, and finally realize it.

8. The traditional river regulation can not be separated from dam opening, water interception and dredging, with large project cost, long construction period and large amount of silt. Biogenerators are directly installed in the upstream of micro-pollution sources such as landscapes, rivers, lakes, rivers, saltwater lakes, bays and land. Cut off and block the pollution source from the source, and realize thorough treatment through microbial degradation of pollution, eating sludge, removing odor, phosphorus and nitrogen removal. To provide reliable equipment for micro-pollution control.