Most sewage treatment plants use biochemical treatment of wastewater, so the reasons why ammonia nitrogen in wastewater after biochemical treatment is still not up to standard may be as follows:
1: The sludge is old, and some sludge has aged.
2. The lower the water temperature, the lower the activity of bacteria.
3. The aeration in the water is not enough, and the oxygen content is not high.
Question 2: What is the reason for the excessive ammonia nitrogen in domestic sewage? How to deal with it? Vito Environment100,000 V team will answer your questions.
1, the reason for exceeding the standard may be:
1) Your company saves water;
2) Your company is crowded, crowded and frequently uses toilets;
3) The time period of personnel discharge in your company is relatively concentrated, for example, during the day, the sampling in the sewage plant is also in this time period.
4) The discharge port is very close to the toilet (leading to unrepresentative sampling by personnel in the sewage treatment plant).
5) Other sewage is mixed in.
2. Inspection method: periodic sampling inspection;
1) samples were taken at the discharge port at different time periods on the same day to determine the ammonia nitrogen value.
2) Sampling at different discharge wellheads in the plant area to determine ammonia nitrogen value.
3) Determine the ammonia nitrogen value of the sample in the nearest pipeline inspection well near the toilet.
By analyzing them separately, we can determine whether there is uneven sewage discharge in your unit, whether the sampling is not representative and whether it is caused by toilet drainage.
If they are not, then there must be a well with a high ammonia nitrogen value. By investigating the source of wastewater there, we can determine where the wastewater with high ammonia nitrogen value comes from.
3, treatment method: I don't know the reason, there is no specific improvement method. In short, the right medicine is enough.
4. Buy tools and facilities: If the ammonia nitrogen value of your unit exceeds the standard by a lot, and it is found that there is no objective reason, that is, it exceeds the standard, then it is necessary to set up treatment facilities.
Question 3: How to deal with the high ammonia nitrogen in the effluent of urban sewage treatment plants? The simplest, fastest and most stable solution is to install a microbial generator. 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 produce more than 1.8× 1020CFU/ml ...
Question 4: What are the main reasons for the excessive ammonia nitrogen in domestic sewage treatment plants? More commonly, ammonia nitrogen accumulated by microorganisms leads to exceeding the standard!
Question 5: The reason why ammonia nitrogen in domestic sewage exceeds the standard comes from the daily necessities we use.
Question 6: What causes the high ammonia nitrogen? Ammonia nitrogen (NH3-N) mainly comes from feed, excreta of aquatic animals, fertilizer and decomposition of animal carcasses. Ammonia nitrogen is the main wastewater nitrogen in water. When the pH value of pond water is high, ammonia nitrogen can return to the atmosphere, or return to the atmosphere in the form of nitrogen, part of which is consumed by aquatic plants and part of which is adsorbed by sediments. Ammonia nitrogen is usually produced by the decomposition of nitrogen-containing organic matter in the absence of oxygen, or by the reduction of nitrogen-containing compounds by denitrifying bacteria.
Question 7: How is the total nitrogen in the effluent of sewage treatment plant exceeding the standard? It is suggested to check whether the nutrient balance (BOD5: n: p = 100: 5: 1) is normal or not, and whether the alkalinity is sufficient during nitrification directly affects the nitrogen removal efficiency. There is also the traditional oxidation ditch denitrification, which mainly uses the uneven distribution of dissolved oxygen in the ditch and produces alternating circulating aerobic zone and anoxic zone in the ditch through reasonable design, thus achieving the purpose of denitrification. Its biggest advantage is that the removal of organic matter and total nitrogen can be realized in the same ditch without additional carbon source, so it is very economical. However, it is difficult to accurately control the volume and dissolved oxygen concentration of aerobic zone and anoxic zone in the same ditch, so the nitrogen removal effect is limited. On the question of water treatment, you can go to the Environmental Protection Pass to ask questions, where there are more people interacting.
Remember to adopt
Question 8: Why the ammonia nitrogen in the sewage plant exceeds the standard, why the tail gas exceeds the standard by 30 times, and why the ammonia nitrogen in the sewage exceeds the standard may be as follows:
1. There is something wrong with the nitration reaction. See if the aeration tank parameters are normal.
2. After hydrolysis, acidification and ammoniation of organic nitrogen, the concentration of ammonia nitrogen increased, and nitrification in aeration tank was limited.
Solution: Add a nitrification and denitrification reactor as an emergency facility and put it into use when ammonia nitrogen is high.
Question 9: What is the main reason for the excessive ammonia nitrogen in the sewage outlet? Excessive ammonia nitrogen has nothing to do with not discharging sludge. On the contrary, nitrifying bacteria need a long sludge age, but they can't discharge sludge too diligently.
See whether the influent ammonia nitrogen is high or organic nitrogen is high; Whether aeration is insufficient or residence time is too short; Whether the sludge age is too short leads to the loss of nitrifying bacteria; Whether there is poison inhibition, etc.
You talk too much to judge in detail. It can be judged according to the actual situation.
Question 10: How to calculate the proportion of ammonia nitrogen exceeding the standard in sewage? Ammonia nitrogen can be reduced, which will lead to the decrease of oxygen content in water, the growth of algae and even the death of fish and shrimp. Cyanobacteria have flooded many times in famous waters such as Taihu Lake Basin and Dianchi Lake in Yunnan, mainly because there are too many reducing substances in the water, which consumes oxygen in the water.
Ammonia nitrogen in sewage exceeds the standard. At present, the most effective method is microbial treatment. After several groups of anaerobic and aerobic organisms decompose, its content can be greatly reduced. Of course, the traditional nitration method can also be used, and its content can also be greatly reduced.
At present, the standard unit of ammonia nitrogen water treatment is: ppm(mg/L), which varies from place to place, and can be detected by distillation, heating colorimetry and other methods.