Question 1: Why is the ammonia nitrogen value in sewage treatment so high? If the ammonia nitrogen in precipitation is extremely high, it will seriously affect the environment if it is directly discharged without treatment. The Environmental Protection Bureau is also strictly investigating this area, and you must find a professional environmental protection company to deal with it. For this kind of high ammonia nitrogen wastewater, ISBE Environmental Protection adopts the deamination membrane method to treat it. The principle of the process is that ammonia nitrogen has the following ionization balance in water: NH4+ + OH- = NH3?H2O. After adjusting the pH to alkaline, it is heated The deamination membrane is used to separate ammonia nitrogen from water under certain conditions. This method has the advantages of lower operating cost, smaller footprint, and convenient later maintenance than the traditional stripping method.
Question 2: How to deal with high ammonia nitrogen in the effluent of urban sewage treatment plants? The simple, fastest and most stable solution is to install a microbial generator. The main advantages of microbial generators are As follows:
1. High degree of automation and good sewage treatment effect
The equipment adopts three-stage generation, alternating operation, step-by-step derivation, and logarithmic growth technology, causing the generator to produce microorganisms The density is 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 CO2 and H2O, thereby purifying sewage.
2. Wide range of adaptability
This equipment is an ideal sewage biological purification treatment equipment. It can generate different populations according to the needs of sewage treatment of different types, different properties and different environments. Microorganisms of different genera, different temperatures, and different sewage treatment needs are 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, Waste (sewage) water treatment needs such as landfill leachate.
This equipment can also be directly matched with old sewage treatment projects such as contact oxidation method, AB method, A/O method, oxidation ditch, SBR, etc., without changing the sewage treatment process or civil engineering. Under the conditions, various purposes such as sewage treatment upgrade and capacity expansion, sludge reduction, nitrogen and phosphorus removal, and reclaimed water reuse can be realized. The equipment can also be used to remove micro-pollution in landscapes, rivers, lakes, rivers, saltwater lakes, bays, land and other fields to protect the public environment.
3. Outstanding economic benefits
This micro-device produces high-density dominant microbial flora, which can quickly eat away pollutants and sludge in sewage without producing odor. There is no need for sludge dehydrators, sludge conveyors, mud cake transport trucks, waste gas treatment equipment and high-power blast aeration equipment. Compared with traditional methods, the energy consumption is 1/8 of the activated sludge method, and equipment investment can be saved. It saves 70% and can also operate on shallow pools, thus reducing the size and depth of the sewage treatment pool, greatly reducing one-time investment costs and long-term management costs.
4. Easy management, safe and reliable
After the high-density microbial flora produced by this equipment enters the treatment tank through the jet, it can quickly reduce the biological oxygen demand (BOD) in the sewage. , chemical oxygen demand (COD) and suspended solids (TSS), and has extremely strong nitrogen and phosphorus removal functions. It can also convert category 5 water into category 3 or above in a very short time, and eliminate wastewater in 7 days. It will eat up about 50% of the sludge in the sewage within 10 days, degrade 20% of the BOD every day, and achieve standard discharge or reclaimed water reuse within 10-15 days.
There is no worry about sludge expansion when using this equipment to treat sewage, and there is no restriction on the operator’s education and age. It is easy to manage, safe and reliable.
5. No secondary pollution, create a green environment
As the occurrence of high-density microbial flora continues to increase, the biological oxygen demand (BOD) in sewage is also increasing. The less BOD, a large number of microorganisms lose their survival energy and self-destruct, turning into carbon dioxide and water. Microorganisms that are not self-destructed can also become food for fish and plankton, thus forming a benign ecological treatment and purification process, without odor, No sludge is produced, no secondary pollution is produced, and a green environment is created.
6. Complete biochemical treatment without being affected by climate
The traditional biochemical method is used to treat sewage, which is affected by changes in climate and water temperature. When the temperature drops by 10 degrees, the enzymatic processing of microorganisms The reaction speed is reduced by 1-2 times. The climate causes insufficient activity of microorganisms, resulting in poor sewage treatment effect. This not only threatens the sewage treatment plants in the north, but also poses a severe test to the sewage treatment plants in the south in winter. Guizhou Great Wall Environmental Protection Technology Co., Ltd. The patented product microbial purification treatment equipment produced completely solves this problem. After the high-concentration microbial flora generated by the generator system is released into the microbial purification treatment system, its biomass speed reaches more than 2.0×104mg/L, making the microorganisms purified. The biological concentration in the treatment equipment is 10 times higher than that of activated sludge, which solves the technical problem of insufficient biomass and poor sewage treatment effect due to low water temperature.
7. Solve the lack of activity and ensure that water quality meets standards
Use traditional biochemical methods to treat high concentration, high ammonia nitrogen, high salt content, toxicity, and heavy metal wastewater. Since microorganisms are present in these wastewaters, There are few survivors and small quantities, resulting in poor effluent quality after sewage treatment, unstable effects, and difficulty in meeting discharge standards. Microbial purification treatment equipment completely solves this problem in a unique way. The microbial generation system can produce more than 1.8×1020CFU/ml... >>
Question 3: Sewage treatment What to do if ammonia nitrogen is high? Reduce the water inflow, reduce the internal return ratio, extend the actual hydraulic retention time of the aerobic unit, and improve the nitrification effect. Pay close attention to changes in other water quality indicators and sludge indicators;
Try to avoid sludge disintegration or sewage pollution. Mud expansion phenomenon; if this occurs, coagulant or iron salt should be quickly added to the system to improve sludge flocculation and sedimentation performance;
Pay attention to the pH and TP conditions, and try to ensure that the system is in a weakly alkaline state If necessary, add an appropriate amount of Na2C03 to the system to supplement the alkalinity required for nitrification;
If the TP concentration in the reactor is significantly lower than usual, appropriate phosphoric acid should be added to the system Dihydrogen bait or phosphate fertilizer can improve the flocculation effect and nitrification ability of sludge;
Increase the external return ratio, maintain a relatively high sludge concentration in the biochemical unit, and improve the system's shock load resistance;
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Appropriately increase the DO concentration (2.5 -4.0 mglL) to improve the nitrification effect;
After this part of sludge enters the secondary sedimentation tank, reduce the external return flow and increase the remaining sludge discharge , conduct harmless treatment of this part of sludge as soon as possible;
If conditions permit, the sludge respiration index and nitrification rate can be measured separately to assist in determining the cause of exceeding the standard;
Increase Frequency of sampling, laboratory analysis, and testing of the emergency measures taken to improve the effluent quality. Otherwise, other methods should be replaced or a combination of methods should be used to shorten the recovery time of the treatment system as much as possible.
Shandong Bostar Environmental Protection will give you the answer, thank you
Question 4: Why is the ammonia nitrogen in the inlet water of the urban sewage treatment plant too high and the outflow rising? Only the nitrification process can convert nitrogen into nitrate or nitrite, and it will not increase. It may be that the sewage is only treated to the carbonization stage and does not enter the nitrification stage. In this process, some organic nitrogen is converted into ammonia nitrogen. !
It should be more general to say that it has not entered the nitrification stage. The organic nitrogen is converted into ammonia nitrogen in the ammonification stage before the nitrification stage. This causes the measurement before and after to rise instead of falling.
1. After passing through the aerated biological filter, the organic nitrogen in the wastewater is ammoniated into ammonia nitrogen, so monitoring the ammonia nitrogen will show an increase;
2. Filter material in the aeration tank There is a problem with the choice of aeration method. The sludge in the pool is basically discharged with the effluent as soon as it breeds. Without the guarantee of sludge age, natural nitrifying bacteria cannot be formed, which means that NH4-N has increased but has not been removed; < /p>
3. The air volume of the aerated biological filter cannot be large and must be uniform. It is not suitable for wastewater with high incoming COD, except for the contact oxidation process;
Question 5: Sewage What should I do if ammonia nitrogen exceeds the standard? The most traditional process for removing ammonia nitrogen from wastewater is the stripping method, but this process has the disadvantages of large floor space, high operating costs, and high noise.
At present, the most effective method for treating ammonia nitrogen wastewater should be the deamination membrane method. The separation and absorption of NH3 in this equipment technology are completed simultaneously on the inside and outside of the membrane filament, eliminating the need for purging air in the traditional process and saving a lot of power consumption. It also improves the ammonia nitrogen removal rate.
Question 6: What causes high ammonia nitrogen? Ammonia nitrogen (NH3-N) mainly comes from bait (feed), aquatic animal excrement, fertilizer and animal carcasses decomposition, etc. Ammonia nitrogen is the main waste nitrogen in the water body. When the pH value of the pool water is high, ammonia nitrogen can return to the atmosphere, or return to the atmosphere in the form of nitrogen. Some of it is consumed by aquatic plants, and some is adsorbed by the substrate. Ammonia nitrogen is usually produced from the decomposition of nitrogen-containing organic matter when oxygen is insufficient, or from the reduction of nitrogen compounds by denitrifying bacteria.
Question 7: May I ask who is the CEO of Sewage Treatment? May I ask about the CEO of sewage treatment? I would like to ask, what should I do if the ammonia nitrogen in domestic sewage treatment is high? Ammonia nitrogen is nitrogen that exists in water in the form of free ammonia (NH3) and ammonium ions (NH4+). Biological method is a method that utilizes the synergistic effect of various microorganisms to remove ammonia nitrogen through a series of reactions such as ammonification, nitrification, and denitrification. , simultaneous nitrification and denitrification and anaerobic ammonium oxidation and other processes. High concentrations of ammonia nitrogen can inhibit the nitrification process, so biological methods are often used to treat domestic wastewater that contains a lot of organic matter but has a relatively low ammonia nitrogen concentration. Ammonia nitrogen in domestic sewage treatment is removed through the nitrification process. High ammonia nitrogen in sewage treatment effluent is caused by incomplete nitrification process.
Corresponding treatment methods:
1. Solve the problem of insufficient carbon source
2. Control the DO in the aerobic stage to 0.5 mg/L
Attachment: The working principle of carbon source consumption and replenishment
Nitrification reaction process: Under aerobic conditions, ammonia nitrogen is oxidized by nitrifying bacteria into nitrite and nitrate. It includes two basic reaction steps: the reaction involving the conversion of ammonia nitrogen into nitrite by Nitrosomonas sp; the reaction involving the conversion of nitrite into nitrate by Nitrobacter sp. Nitrosomonas and nitric acid Bacteria are all chemoautotrophic bacteria. They use CO2, CO32-, HCO3-, etc. as carbon sources and obtain energy through the oxidation-reduction reaction of NH3, NH4+, or NO2-. The nitrification reaction process needs to be carried out under aerobic (Aerobic or Oxic) conditions, with oxygen as the electron acceptor and nitrogen as the electron donor. The corresponding reaction formula is: nitrosation reaction equation: 55NH4++76O2+109HCO3→C5H7O2N+54NO2-+57H2O+104H2CO3 nitrification reaction equation: 400NO2-+195O2+NH4-+4H2CO3+HCO3-→C5H7O2N+400NO3-+3H2O nitrification process The total reaction formula: NH4-+1.83O2+1.98HCO3→0.021C5H7O2N+0.98NO3-+1.04H2O+1.884H2CO3. From the material balance of the above reaction process, it can be seen that during the nitrification reaction, 1 gram of ammonia nitrogen is oxidized into nitrate nitrogen. It requires 4.57 grams of aerobic (including 3.43 grams of oxygen for nitrosation reaction and 1.14 grams of oxygen for nitrification reaction), and about 7.14 grams of bicarbonate (calculated as CaCO3) for alkalinity. During the nitrification reaction, the conversion of nitrogen element goes through the following processes:
Ammonium ion NH4-→hydroxylamine NH2OH→nitroxyl NOH→nitrite NO2-→nitrate NO3-.
Question 8: How to remove ammonia nitrogen from sewage sludge treatment? You haven’t given any water inlet indicators, so how do you know where the problem is?
Maybe your ammonia nitrogen inlet water index is as high as more than 100, and the outlet water is between 12-14. This removal rate is already very high. Why are you dissatisfied? And what about BOD?
Your questions are not professional. What professional answer do we have?