NOVELTY - Abnormal water inlet water quality sewage treatment system emergency control process is performed by determining if sewage treatment plant suffers abnormal water impact by checking chemical oxygen demand (COD) or potassium nitride (KN) concentration for 4 hours, designed water inlet index which is greater than or equal to 20%, and pH is less than or equal to 5.5 or greater than or equal to 10 which indicates pollutant toxic effects, and determining abnormal water quality index in which abnormal water quality indicates COD, ammoniacal nitrogen (NH3-N) or total nitrogen (TN) concentration exceeds designed water index or daily increasing amplitude value.    USE - Abnormal water influent quality sewage treatment system emergency control process (claimed).    ADVANTAGE - Process has good control effect and less investment.    DETAILED DESCRIPTION - Abnormal water influent quality sewage treatment system emergency control process is performed by determining if sewage treatment plant suffers abnormal water impact by checking COD or KN concentration for 4 hours, designed water inlet index which is greater than or equal to 20%, and pH is less than or equal to 5.5 or greater than or equal to 10 which indicates pollutant toxic effects, determining abnormal water quality index in which abnormal water quality indicates COD, NH3-N or TN concentration exceeds designed water index or daily increasing amplitude value of greater than or equal to 15%, adjusting operation conditions when abnormality is detected according to different standards in which control measure is shown in the given table in the document, increasing amount of aeration when amount of pollution increases which is determined by increased concentration of COD and KN in influent in which increased aeration (m3/min)=(0.3x increased influent COD amount (kg/hour))+(1.2x increased influent KN amount (kg/hour)), controlling dissolved oxygen value, increasing sludge reflux flow rate when amount of pollution increases which is determined by increased sludge reflux flow rate and concentrations of influent COD and KN in which increased sludge reflux flow rate (m3/hour)=(designed sludge reflux flow rate (m3/hour))x ((increased COD concentration/designed COD concentration)+(increased KN concentration/designed KN concentration)), determining increased KN concentration using increased mixture reflux flow rate (m3/hour)=(designed mixture reflux flow ratex (increased KN concentration/designed KN concentration)), determining amount of acid-base according to changes in pH in which pH is controlled at 6-9, controlling water quality without damaging sewage processing system ability when influent COD or TN concentration is greater than or equal to 40% for 4 hours, pH is less than or equal to 5 or greater than or equal to 10.5, or toxic pollutants require excessive treatment, starting emergency drug addition when abnormal water quality is detected to improve treatment effect in which control measure is shown in the table given in the document, biological microbial inoculum I contains photosynthetic bacteria, microzyme, Acetobacter, Bacillus subtilis, and Bacillus megaterium in which number ratio of photosynthetic bacteria, microzyme, Acetobacter, Bacillus subtilis, and Bacillus megaterium is 1:2:1:2:1 and effective bacteria is greater than or equal to 5000000000/ml, biological microbial inoculum II contains nitrate bacteria and nitrite bacteria in which number ratio of nitrate bacteria and nitrite bacteria is 3:1-5:1 and effective bacteria is greater than or equal to 3000000000/ml, biological microbial inoculum III contains Pseudomonas, Agrobacterium, Alcaligenes, and nitrogen-sulfur-removing bacteria in which number ratio of Pseudomonas, Agrobacterium, Alcaligenes, and nitrogen-sulfur-removing bacteria is 3:2:1:1, and effective bacteria is greater than or equal to 3000000000/ml, continuously adding activated carbon, adding sewage water in aeration tank in which activated carbon adding amount (kg)=(0.004x COD target value (mg/l)x amount of water per hour (m3)), adding biological microbial inoculum I when COD exceeded in which biological microbial inoculum I adding amount (kg)=(0.0012x COD target value (mg/l)x amount of water per day (m3)) and adding time is 3-5 days, adding biological microbial inoculum II when abnormal ammoniacal nitrogen is observed in which biological microbial inoculum II adding amount (kg)=(0.0025x ammoniacal nitrogen excess value (mg/l)x amount of water per day (m3)) and adding time is 3-5 days, adding biological microbial inoculum III when ammoniacal nitrogen is normal but TN is excessive in which biological microbial inoculum III adding amount (kg)=(0.0015x TN excess value (mg/l)x amount of water per day (m3)) and adding time is 3asterisk5 days, and determining specific adding amount according to excessive concentrations and system recovery time.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of abnormal water influent quality sewage treatment system emergency control process. (Drawing includes non-English language text).