WEBVTT 00:21.299 --> 00:23.870 Hello , I am Paul Schroder . I'm a 00:23.879 --> 00:26.250 research engineer in environmental lab 00:26.260 --> 00:29.159 at er today , I'm going to talk to you 00:29.170 --> 00:32.290 about the C A model cell is a program 00:32.299 --> 00:34.720 used to design confined disposal 00:34.729 --> 00:37.150 facilities for dredge material . As 00:37.159 --> 00:39.979 shown in this slide design of uh 00:39.990 --> 00:42.259 confined disposal includes multiple 00:42.270 --> 00:45.459 features . It requires a a design for 00:45.470 --> 00:48.659 solus retention that is for material to 00:48.669 --> 00:51.990 to generate clear water , a 00:52.000 --> 00:54.299 requirement for a design for an initial 00:54.310 --> 00:56.421 storage , make sure the drug material 00:56.421 --> 00:58.643 will be able to be contained within the 00:58.643 --> 01:00.477 confined disposal facility . And 01:00.477 --> 01:03.799 finally , it is you know , to , to be 01:03.810 --> 01:05.921 designed to achieve the water quality 01:05.921 --> 01:07.830 you're trying to achieve , to 01:07.839 --> 01:09.839 understand the use of the program . 01:09.839 --> 01:11.950 It's it's important to understand the 01:11.950 --> 01:14.519 concepts required for designing uh a 01:14.529 --> 01:17.970 confined disposal facility shown here 01:17.980 --> 01:21.889 is AAA conceptual model of our drawing 01:21.900 --> 01:24.089 of a confined disposal facility . 01:24.510 --> 01:26.510 Materials pumped in in in in in the 01:26.510 --> 01:29.699 beginning , find the coarse grain 01:29.709 --> 01:31.876 materials will settle out , you know , 01:31.876 --> 01:34.199 near the influence as of my own and 01:34.209 --> 01:36.376 then the fine grain material will move 01:36.376 --> 01:38.487 into the confined disposal facility . 01:38.900 --> 01:41.300 In essence , the program that will help 01:41.309 --> 01:44.910 you size for storage of material 01:45.230 --> 01:49.150 for area for clarification to occur 01:49.290 --> 01:51.769 and then finally retention time to 01:51.779 --> 01:53.629 create the affluent quality of 01:53.639 --> 01:55.750 suspended solids that you you want in 01:55.750 --> 01:57.806 the effluent . OK . This slide shows 01:57.806 --> 01:59.972 you the range of calculations that can 01:59.972 --> 02:02.139 be performed with the FO model . There 02:02.139 --> 02:04.195 are three different types of selling 02:04.330 --> 02:06.497 and they , they are used for different 02:06.497 --> 02:08.163 purposes . In the model . The 02:08.163 --> 02:10.163 compression selling is used to size 02:10.163 --> 02:11.997 your storage requirements , zone 02:11.997 --> 02:15.460 selling is used to determine that you 02:15.470 --> 02:18.279 will generate clear water and fo and so 02:18.509 --> 02:21.339 we make sure that that clear water has 02:21.350 --> 02:24.270 low enough suspended solids in it to 02:24.279 --> 02:26.612 meet your effluent quality requirements . 02:26.612 --> 02:29.130 So here are our typical results , you 02:29.139 --> 02:31.028 know , for the different types of 02:31.028 --> 02:33.860 settling requirements for storage . For 02:33.869 --> 02:37.229 example , uh for at the 02:37.240 --> 02:40.160 given operation in the program would 02:40.169 --> 02:43.250 tell you the the die kite required in 02:43.259 --> 02:45.370 order to meet your stories . And this 02:45.370 --> 02:49.309 diy would be uh uh some of the 02:49.320 --> 02:51.919 depth required for storage , the depth 02:51.929 --> 02:54.919 required for ponding in order to meet 02:54.929 --> 02:58.240 your water quality and , and then the 02:58.250 --> 03:01.990 free board . So in this case , we have 03:02.000 --> 03:04.229 a project where it says we need 03:04.240 --> 03:07.910 224.78 acre feet of storage . 03:08.289 --> 03:11.910 We and this was a 10 acre disposal site 03:13.720 --> 03:17.220 where 2.48 ft of the material uh of the 03:17.449 --> 03:19.770 of the depth would be occupied by 03:19.779 --> 03:23.300 storage , 2.81 ft would be 03:23.309 --> 03:26.270 occupied by the pond at water in order 03:26.279 --> 03:28.446 to have enough retention time for sing 03:28.446 --> 03:31.779 there . And then , and then finally , 03:31.789 --> 03:34.779 the rest of the , the , the die kite is 03:34.789 --> 03:36.956 the free board , which is 2 ft of free 03:36.956 --> 03:38.122 board . In this case 03:41.699 --> 03:43.921 shown here is then the requirements for 03:43.921 --> 03:45.977 clarification to occur for that is , 03:45.977 --> 03:48.143 you know , to generate super water for 03:48.143 --> 03:50.210 to be discharged . Tells us that for 03:50.220 --> 03:53.800 our operation , we we only needed 3.55 03:53.809 --> 03:57.130 acres while the site was 10 acres in 03:57.139 --> 03:59.580 size . So therefore , our clarification 03:59.589 --> 04:01.960 will occur , we exceed our minimum . 04:02.869 --> 04:06.149 And then finally , in order to meet our 04:06.160 --> 04:09.039 res , uh our suspended solids . In this 04:09.050 --> 04:10.994 case , our suspended solids limits 04:10.994 --> 04:12.994 worth 200 mg per liter of suspended 04:12.994 --> 04:16.589 solids . It , it required 33.37 hours 04:16.600 --> 04:19.279 of resonance time in that pond water 04:19.290 --> 04:23.149 above our subtle material to meet uh 04:23.170 --> 04:27.160 that 200 mg per liter being a 10 04:27.170 --> 04:29.690 acre site . That means the , the volume 04:29.700 --> 04:33.279 occupied for ponding is 28.1 04:33.399 --> 04:36.089 acre feet . And the depth of pond water 04:36.100 --> 04:39.149 on average across the site is 2.81 ft . 04:40.970 --> 04:44.799 And so AAA and therefore we know at 04:44.809 --> 04:46.976 this point , then we know we have a 10 04:46.976 --> 04:49.989 acre site . It needs to be 7.3 ft high 04:50.000 --> 04:53.299 at a minimum for the dike height and um 04:53.309 --> 04:55.510 and operated , you know , for the 04:55.519 --> 04:57.540 operation that we have with a , I 04:57.549 --> 04:59.605 believe this was a 12 inch stretch , 05:03.049 --> 05:06.700 er , discovering , developing and 05:06.709 --> 05:08.820 delivering new ways to make the world 05:08.820 --> 05:10.829 safer and better every day .