Sewage flow calculation

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How to calculate the flow rate and head of the sewage elevator?

The calculation method for the flow rate and head of the sewage elevator is as follows: Calculate the flow rate and count the number of sanitary ware at the sewage discharge point. To calculate the sewage flow rate, first calculate which sanitary ware needs to be discharged from the planned sewage discharge point at home.. For example, a bathroom may have a toilet, urinal, washbasin, shower head, etc. According to the specific planned number of sanitary ware, calculate the maximum drainage capacity of the bathroom. As long as the selected sewage lift pump flow parameter is greater than the maximum discharge capacity, it can basically meet the demand. Reference Daily Sanitary Ware Flow Estimation Table: The flow estimation of commonly used sanitary ware in daily life can refer to relevant tables. Using the formula for designing the second flow rate of domestic drainage pipes: In the water supply and drainage standards, the formula for designing the second flow rate of domestic drainage pipes is Q=0.12a √ N+Qmax (where Q is the design second flow rate, a is a coefficient determined according to the buildings purpose, N is the equivalent total number of sanitary appliances, and Qmax is the maximum rated flow rate of sanitary appliances). However, the flow rate calculated by this formula is generally slightly larger than the actual flow rate. For general household use, the estimated flow rate of sanitary ware can be roughly added up according to the table. Calculation of lift for underground level scenario: According to general scenarios, the drop of the underground level is usually 3-4 meters, and choosing a lift of 5-7 meters is usually suffic

2. How to calculate the specific flow rate of sewage? First of all, may I ask what the "water intake index" refers to? Your data has no units. Based on the size of this data and the "Design Standard for Outdoor Water Supply" GB50013-2018, I speculate that the highest daily comprehensive domestic water quota is 0.35 cubic meters per person per day? If so, the calculation method for the area to flow ratio of sewage should be: 0.35 x population density x 0.85 x 1.1 ÷ 1.2. According to the formula I provided, lets not consider the issue of unit conversion for now. Let me explain why we need to list the calculation formula in this way. × 0.85 refers to the conversion of 85% of water supply into sewage, × 1.1 refers to the additional consideration of 1% of groundwater infiltration, ÷ 1.2 is because according to the definition, the sewage area ratio flow rate refers to the average daily average hourly situation, so the highest daily sewage flow rate divided by the daily variation coefficient is the average daily average hourly flow rate. Of course, if the data of 0.35 for bent and scattered fruits is the average daily comprehensive water quota for production and storage, then the data of 1.2 is redundant. So you still lack data on the population density of the Mu family. The spe

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