At the beginning working with a MBR can represent a significant challenge: increase in variables, different performance indicators to monitor and control, & unfamiliar equipment… it takes time to adapt. Dosage calculation formulas. The length of the tube was inherited from the summer team, as our team did not replace the tube that had already been attached to the set up. Note that the transition between laminar flow to turbulent flow in long smooth pipes occurs at a Reynolds number of roughly Re = 2300. Do deficient conditions in: anoxic/aeration/MBR tank zones have an impact on P removal? Lower doses are required to give equivalent results to alum. Yield of the calculations : Polymer consumption GPD (neat) 428.49786 : Polymer consumption GPH (neat) 17.85408 : Polymer consumption GPM (neat) 0.29757 : Polymer consumption Ounces/Min (neat) 38.08870 : PPM of polymer needed to make the process work : 3500 : 24: Process Day (Hrs) RTU polymer/water mixture consumption GPM : 0.29757 Coagulation is the process of chemically destabilizing solutions whereby electrolytes are added into solution so as to reduce the charge on the colloidal particles, thus facilitating their close approach and aggregation. These colorimetric tests allow for fast results and enable timely process control adjustments. The optimum aluminum sulfate dosage was 2 g/L. The best way to optimize your system is thru sampling and monitoring. A too low a dose of alum can result in variable effluent P concentrations as well as a noncompliance of discharge limits. The phosphorus discharged from your treatment plant need to meet your discharge requirements. 7. Aluminum Sulfate (liquid) ... dosage calculation. {"serverDuration": 67, "requestCorrelationId": "20e4cabe323c20ec"}, Overall Tube Floc Research and Past Report. The needed dose varies with the pH of the water and the size of the particles. Depending on the type of coagulant used, the dosage will vary. Flocculation involves producing collisions between suspended particles that are strong enough to overcome the repulsive potential barrier between particles, but that will not simultaneously break up the flocs already in suspension. 12H 2 O are considered to be an alum. It all depends on the wastewater characteristics, the mixing & dispersion conditions, the phosphorus concentration in your raw water and the expected concentration at the release point & so on…. To determine the optimal alum dose needed for an influent water turbidity of 100 NTU, we set up a special program in Process Controller. Weight Calculator Metal gets heavy, and whether you want to see how much shipping is likely to be, or if your vehicle (or back) can handle it, it’s good to know what your order weighs. Calculate the actual alum dose in mg/L for a plant treating a flow of 1 MGD with an alum feed rate of 130 lb/day. Yes but will depend on where it is added. As early as 2000 BC the Egyptians used alm… And for: How do you know when over/under dosing for P removal? The flocculator setup was used in this experiment. However, the purpose of our investigating optimal alum dose is not to give operators in Honduras a alum dosing guide, but to develop a control method in our experiments that will render alum dosing a temporary non-variable. I asked a colleague about your questions and we agree with Alinea's answer. Coagulation and flocculation are an essential part of drinking water treatment as well as wastewater treatment. Deficient conditions in your treatment process will inevitably have a repercussion on not only your P removal but on all your parameters. The aluminum helps make the cell walls of fruits and vegetables sturdier, producing a crisp pickle or firm cherry. I surmise that you would test for phosphorus, pH, temp., D.O., TSS in all zones; could aluminum residual test be a useful indicator of optimal process? Single-Step Flocculation for reclaiming Parts Washer wastewater? The equations relating Gbar to the flow rate Q for laminar pipe flow are as displayed below. To monitor the amount of phosphorus, and the required dosage of coagulant, you will need to sample various locations to take suitable actions. 1. This translates to a flow rate of roughly 9.69 mL/sec through the 0.42m diameter pipes used in this experimental setup. The calculation for the length of the tube was done by measuring the outer diameter of the cylinder around which the tube was wrapped (plus adjustments for the thickness of the tube itself) and multiplying that by ¿ to give the circumference and then multiplying the circumference by the number of times the tube wrapped completely around the cylinder. After running a set of alum incremented experiments on influent turbidities of 50, 75, 100, 150 NTU, we extracted the data for analysis. If you want to calculate the dose of a medication, you need to use the following equation: dose = weight * dosage. Knowledge of the product used allows a refinement of coagulant dosage calculations. A second observation deduced from comparing each of the figures is that the marginal effectiveness (measured in both final turbidity and initial rate of settle) of increasing alum dose decreases significantly after about 25-30 mg/L of alum.