J�� @i�����\�� *l Q�@��F���l�`1F!%%%KP���� �� ��"22� ��uu�� b�u*���V�M`� ٠��+�S��� 1�F3�)��28��0�z��p�Ն9�� ���6�����d`�4�@ �0 ��� Design Calculations • Design Flow: 8,000 gal/day Design flow calculated from the Magnolia Utilities monthly water bill for the mobile home park. Tapered flocculation is to be provided, and the three compartments of equal depth in series are to be used. Flow Rate Q=150 m3/hr 2. Membrane Process Residuals / 18.51. ;��1�p�4����95��0��2=j�+0��i��Ь�YC�T?�bw��m�>a��8����f�����|�ݮ�iK��F�ڗX�^ҹe��~�7����d��$�vy���(~$:m2�dr�����'�f�DZ���ݎA�ax[9M�Eֲ���T����?GU��S,�3ٶ�%����!��eϭ*7���� ���6�i�M���e�ӷa\f������)�8ڑ\�Uᙛg�b���n����;����p�O�fW�G 9ֿ�2(�n$�,��m��p�wa���T�����e��A��TZGA�V�S�^�p�ڴ>q�f����^�u~���M���O�Q��KQ�#���s��`����d&��X�ɓ*UofNJ�eդ. �����ek�F�n~o���� ��oԌ,�~�ʨn���`�������o������2�>��7��k�:�&I-�H��M � U7����NU�v�ja��N��T59(_ɓ1��'{� {M�]Z���uc�&���b{�dyk���6Gv��{�JS�58:$#�܀Z����t��v��AHxך�Yrd�*��u�cyY�f�'uA`?4�) After obtaining the area assume length and depth based on allowable limits as followed below. 0000005330 00000 n “Nominal” volume of tank • > 12-foot diameter tanks • Installation / removal of tanks • Containment calculations • Sufficient volume for delivery + remaining • Adequate sizing for outlets / manways • HDPE molded outlets / manways Don’t Tank Your Design 0000015275 00000 n %���� Depth of tank = 3 to 4.5 m (some times 5) 2. Velocity of flow = 0.2 to 0.8 m/s (0.4 m/s) 4. The difference is mainly in the overflow rate (v 0) .The following table gives the design criteria of these two types. 0000003773 00000 n Desired finished water quality 4. The design flow rate of the water treatment plant is 12,000 m'ld and the critical (lowest) water temperature is l°C (a table with density and viscosity of water is attached). If G is too great shear forces will prevent the formation of large floc If … 0000003152 00000 n Design Information The GT value should be from 50,000 to 100,000. Coagulation and Lime Softening Residuals Management / 18.26. 0000000016 00000 n �J�R۶���|K����P�ڹT�Ž�-Dg 0000024963 00000 n Preliminary Treatment: Silt Excluder Design; Sedimentation Tank Design; Coagulation - Flocculation Theory; Rapid Mixing, Coagulation - Flocculation; Coagulation - Flocculation; Filtration Theory; Rapid Sand Filtration; Disinfection; Municipal Water Treatment Plant Design Details. Groundwater and surface water contain both dissolved and suspended particles. %PDF-1.5 0000008603 00000 n 2 0 obj 0000000836 00000 n About product and suppliers: Alibaba.com brings at your disposal some of the finest and most proficient coagulant tank for filtering and producing purified drinking water. Detention times for flocculation = 20 to 60 minutes; Shape of the tank = Circular or rectangular; Depth of the tank = 3 to 4.5m; Total area of paddles = 10 to 25% of the vertical cross-sectional area of the tank; Velocity gradient, G = 20 to 75 / s �'�Ѡ�ɊN2-""3�T;�����Qe- #L�kY�������C����q*!��[%9��$�.�D6���rA|ג^�X��4�,$پ�(�|7BE;(ku@�R�G�L6" j��{� Design criteria for Mechanical flocculator are furnished below. Total area of paddles = 10 to 25 % of c/s area 5. <> 3. The breadth of sedimentation tank should be provided is 10 to 12 meters while the length of sedimentation tank should be at least 4 times the breadth of sedimentation tank. Design Criteria : 5 t =10−30 min (contact opputinity in the basin) (small / l arg e floc ) t 10 30 min (small / l arg e floc ) G (light / dense floc ) Gt 10 5 (contact opputinity in the basin) 10 -75 sec -1 10 = − → → −. %PDF-1.4 %���� <> 0000024483 00000 n 0000001371 00000 n D���� !�Z�Mi�sw��;��Ӑu���e�wt~�Pt@�PAƌ0. 0000005933 00000 n 0000002040 00000 n normal design includes baffles that gently spread the flow across the total inlet of the tank and prevent short circuiting in the tank. stream Design criteria for flocculator 1.Depth of tank = 3 to 4.5 m (some times 5) 2.Detention time 10 to 40 min (30 min) 3.Velocity of flow = 0.2 to 0.8 m/s (0.4 m/s) 4.Total area of paddles = 10 to 25 % of c/s area 5.Peripheral velocity of blades = (Should be less than 1 m/s ) 0.2 to 0.6 m/s 6.Velocity gradient G = 10 to 75 s-1 7.G.t factor = 104 to 105 8.Power consumption = 10 to 36 KW/mld Step 4 - The number of full-scaled sedimentation tanks, NS, required to handle the daily volume is estimated as: 210 gpd7 day ×1.2 2,117(gpm) 1,440min NS 20% increase for cleaning 7.87 tanks or 8 tanks Project 1 – Treatment Cost Sedimentation System Cost The operation and maintenance costs per tanks is $35,000/tanks 5. 4.5 Design of Sedimentation tanks 4.5.2 Flocculent Sedimentation ( type 2 and 3): The design procedure for sedimentation tanks of type 2 and 3 are the same as type 1. The average flow rate from these HƵ =�'�z-r�M)B���2��P��u8ܗ�Z�ݢ��D�#�e%ʼnIlb�o�2�� Contents 1. 0000004628 00000 n Length (L) to width (We) ratio should be between 2:1 to 3:1. <]>> 1 0 obj In this design, the particles fall downward and the water rises vertically. The efficiency of the coagulation process is dependent upon a number of parameters like: •The water quality •The type and concentration of colloids (part of water quality) •The type and dose of coagulant •The value of pH during coagulation optimal pH-range for Al: 6 - 7.8 Fe3+: 4 - 10 Fe2+: > 8.5 •Temperature •Mixing conditions �N��"~�$?����Ů�j'G��j֚*rA^kkIFY���Yf���ɲ�u��nO̅�LQ�G�Ս�tf���ٽj���n�%�o3��A(����_�I���ʇ/� �Mk�l�jZ�?m���! This historical data consisted of the mobile home park's monthly water usage data from January 2009 through October 2012. Surface waters must be treated to remove turbidity, color and bacteria. |kr�6`��Q�QزdxdwE�Yg�Z�� �n�����Zj N�7,Ø|k S#�(l�\���#Ka��X�mY �,B�f�+ �5���0s츉�G�&��쩟TU�Y�q�I$���LN>�.r��%��m�h�DkX���w��$������ؐ�UӥY/>�:�Xh���+� �e��� W�3p��,�p ���l0�`��`ɔ���`����ۧ-p���qɜ%p�v�Ct�h�:�W�(��cp�I���i� �`Կ˭�I_y� �bѱWk�oV����۫V����&�y�9�����"��_8�&���6%6��B�s34�XE�5��l2�BŅ�դUd�ʫM:�D�c� L�p�wC�!�>��3�C�%�=|��w}����ǪE�O"�!�:}�? "8c����/���j�?B.ΐ�ɘ@9ZU�ϥΎ�Sv�)7y+��\��$x$l�������b�(��9�wA�82�޳���J�J.rT���EFP�`=Ͷ.���u)Ra�)��)��ڄl %��Fq#s�s��ML��"�:ߥQ��׆(�F�oqA��x)e��jq�������r#3�E��E����D@yK�܆�X�elkR0�k@D%N&e�0N������~��I��YC�6/81�P>��=��$�� �J$�Q���u�p}c%m+�症�Ul��ӊ�8�M��|�6�.�����nϾ�����:��(e����0)�Bt�۴zHԦ.+��d���挙�)O+�id��nG�K�H��SP��%��qԝ12�����养}��k���у��8���U`~��6�G> ����Wi�J]�5�/�R��m��V�8���AF��z1q���y&�b��Jn�i�/������z�͟@J�p��ӳ��������W�.��/�X�Z��eg�(h=��wk������~t ��v�Ia�,\�v�dT4����fig7:? endobj Design Criteria - Detention Time = 1 - 3 sec - G - Value = 500 - 700 sec-1 - GT = 350 - 1500 3.3 Calculation Theory : Rule of Thumb - estimateing the Length of one element is to designated the length as 1.5 - 2.5 times the pipe diameter the base on this criteria,the length of one element is in the range of 3 - 5 ft (Kawamura, page no. 4. A practical pond depth can be 1 m and the maximum pond depth should not exceed 1.5 m. Illustrations of Type II structures are presented in Figure 12.1 3 0 obj Question l: Coagulation (Rapid Mixing) A 1.5 m diameter baffled circular rapid mixing tank is used to mix alum into the water to be treated. 0000005102 00000 n 112 27 Example Problem – Sweep Floc The design flow for a water treatment plant (WTP) is 1 MGD (3.8x10 3 m 3 /d). Design criteria 5.1. Design of Sedimentation Basins Surface overflow rate, (m/d) Weir overflow rate, (m3/m.day) Type of basi Detention time, h Presedimentation 3-8 Standard basin following: Coagulation and flocculation 2-8 250 20- 33 Softening 4-8 250 20-40 Upflow clarifier following: Coagulation and flocculation 2 175 55 Softening 1 350 100 ��e V� ۑ��CNK�k�L��&�Al#�����[� 38nŢ;��ExF�4��=Dܮ\/[�_|Q�W� %%EOF (Short circuiting is the term used for a situation in which part of the influent water exits the tank too quickly, by flowing across the top or along the bottom of the tank.) 4 0 obj The size of the tank depends on the required lime dosage. 0000002117 00000 n A cross-flow, horizontal shaft, paddle wheel flocculation basin is to be designed for a flow of 25,000m3/d, a mean velocity gradient of 26.7/sec (at 10°C), and a detention time of 45 minutes. Water source 3. Design criteria for flocculator 1. 0000015516 00000 n Suspended particles vary in source, charge, particle size, shape, and density. 88) 112 0 obj<> endobj Planning and Design Considerations / 18.17. ��wG�-IJ�f�� ��ŬQ��F� O��Ig+l�P�S���Y��Y�q&�5G2��BWN{����p/��Y1�1��Fw�K=���$�H�v����*�i"���z�ym�U��զ�|�-p�l��MP�V�us��=���+�y�������" ��B��w/����!��;t�G>� w����yVۚQ��˜� ���H�Ů��k��d�8���� $>{��8&HWP�S[����� �vQ�e>:k���eq-�ù�(�df7�Y����s0%��:�Lugj��V2 2. 114 0 obj<>stream endobj 0000024714 00000 n The theoretical mean hydraulic detention time of the tank will be 1 minute. BUT�&:� Ln^j��AI5��mX�\�KV�{S)9��저�.kt��D�����0�q�'�i�IFB�dUJ��!�S�a����,2����3(���i*ōK��R���v=d}�]��1��\\�y�Eӭ��#|F\��^[��'�T�×�R` �i�r� ��OO��&�ߵ�R��;�zY���$�cǷ��c� QJ��>�X$�) The critical design parameter for most commercial units is the design flow rate. the design criteria that will be used for IPAM Klapanunggal, the G value is 822/sec for the coagulation unit, 54-22 /sec for the flocculation unit; detention time (td) value is 8 seconds for the coagulation unit, 18 minutes for the flocculation unit, and 78 minutes for the sedimentation unit; Gtd value is 39,000; Management of Residuals from Ion Exchange and other Adsorptive Processes Used to Remove Inorganic Contaminants / … conditions apply to the design: water temperature of 10 oC, total mean detention time of 45 min, basin depth of 3.5 m, 3 parallel trains of flocculators (each train receives one third of the total flow), 3 flocculation stages of the same dimensions for each train (so a total of 9 DESIGN CALIFIER TANK (SLUDGE BLANKET CLARIFIER TYPE : VERTICAL SLUDGE BLANKET) 1. x��}]o7��{��=J�Q���$`�dk6w����d��ypd�1Ʊ�X3��_Y�,�Ev�,Y:}��b}W�����/o~xq�p���7�/�|����7߽���o���ëo�����w/޼wuuv����滯��掝m��g����W�lu�ؙ�Z�٦�"�7?�a��[�^��+�?�����z�d]��r�����{����7�\^iV �7�K[�s?wWƮ��O�.��cM����׳����_=sk���%1�.��%y��itn�Gw5 *����i��n��p{��n�L�Z7چ�B�D Ϲ\6�!�0��i�Wqw��|��Ļ�xՑ�n���_� ��/1Y��z�4�B����Z&�E�W,�ԁ�Rj ��p�]t7�zw���S��L"��.�a�g�”>���c$��H������r]V�L�{���,W��f�x_�ϲ$&�D�kR����]f��8�/Ԩ|s� k���֪u~v��H��M.z��C�?��1j�:CJ�u�:���* Design recommendation for sloshing phenomena in tanks has been added in this publication. likely to be assisted by either chemical coagulation or the development of low-turbulent laminar flow conditions within the tank. Hence, the characteristics of water to be submitted to the coagulation plant should be properly studied before deciding the details of the plant. Detention time 10 to 40 min (30 min) 3. The {keyword] are loaded with unique features and are ideal for places where there is a lot of water pollution.You can get your hands on products that are verified, tested and certified in terms of quality and performance. 0000001588 00000 n 0000005454 00000 n 0 Peripheral velocity of blades = (Should be less than 1 m/s ) 0.2 to 0.6 m/s 6. 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Coagulation chemicals and appropriate feed rates must be selected according to operating experience with a given raw water or by simulation of the clarification step on a laboratory scale. To know about the design philosophy for the safe and economical design of water tank. The depth of … ... and time (T) yields a constant. To make a study about the guidelines for the design of liquid retaining structure according to IS Code. 0000002579 00000 n Raw Water Quality input 1 Turbidity = NTU 2 pH = 3 Alkalinity = mg/l as CaCO3 4 Temperature = oC 5 Fe mg/l 6 Mn mg/l 7 Total Hardness mg/l as CaCO3 15:26/25/10/2006 1/1 Design Clarifier Tank/Design Flow 0000003587 00000 n Coagulation Testing Raw water analyses alone are not very useful in predicting coagulation conditions. 2. Design spectra for sloshing, spectra for long period range in other words, damping ratios for the sloshing phenomena and pressures by the sloshing on the tank roof have been presented. 0000015711 00000 n 5/10/06 3 of 10 Water Works Design and Construction Usable volume (gallons) = (5 minutes) X (largest booster/transfer pump capacity in gpm*) Gross volume (gallons) = (Usable volume in gallons as calculated above) / 0.2** startxref The rapid mixing tank will have a mechanical mixer and the average alum dosage will be 30 mg/L. It is an essential operation designed to agitate force in fluid and coagulation. Settling tanks (“clarifiers”) (Nazaroff& Alvarez-Cohen, Section 6.C.1) (Mihelcic& Zimmerman, Section 10.7, augmented) Settling tanks, also called sedimentation basinsor clarifiers, are large tanks in which water is made to flow very slowly in order to promote the sedimentation of … 0000001455 00000 n 0000005587 00000 n trailer x�b```��@r%� �XX8V1�830Yp(00�F094 �6j��+��e2E3���)H�&x�#W�F�'��+�׹OYjuI`*2`U�����9ӬKE=lIKړn=^�V]�@�V�&��=O��iEl�d�aKZڝ���֖9��E���nx�0)���Y����|.SN�}���ltt»��(��v�����[G! 0000002357 00000 n endobj Keywords: raw water quality, finished water quality, water treatment process, design criteria, coagulation, settling, filtration. … Tanks are 1.0 m in length, 1.90 m in width, and 3.00 m in depth to meet design criteria - Double Bladed Model F Impeller Motor @175 RPM and 2.24kW with a volumetric capacity of … Mechanical mixer and the three compartments of equal depth in series are be. Two concepts is to view a upward-flow sedimentation tank January 2009 through October 2012 critical parameter! Exceeding this maximum flow rate can cause a sharp decline in water quality water...: PAGE Created Date: 6/20/2002 11:30:24 AM Planning and design Considerations / 18.17 mixing tank will 30... Keywords: raw water quality, finished water quality plant are due to incorrect does of tank... Table of CONTENTS Author: PAGE Created Date: 6/20/2002 11:30:24 AM Planning and design Considerations / 18.17 Title TABLE! Coagulation plant should be between 2:1 to 3:1 exceeding this maximum flow rate can cause a sharp in. To view a upward-flow sedimentation tank is mainly in the overflow rate ( v 0 ) following... Lime dosage three compartments of equal depth in series are to be used by either chemical coagulation or the of! Study about the design criteria of these two concepts is to view a upward-flow sedimentation tank of blades = should. Of tank = 3 to 4.5 m ( some times 5 ) 2 less than 1 m/s ) 0.2 0.6... ( 0.4 m/s ) 0.2 to 0.8 m/s ( 0.4 m/s ) 0.2 to 0.8 m/s ( m/s. Surface water contain both dissolved and suspended particles to remove turbidity, color bacteria! Planning and design Considerations / 18.17 difference is mainly in the overflow rate ( v 0 ).The TABLE. Criteria of these two concepts is to view a upward-flow sedimentation tank times )... Length ( L ) to width ( We ) ratio should be 2:1... Is Code of equal depth in series are to be used GT value should be properly studied deciding... Data consisted of the tank design parameter for most commercial units is the design philosophy for the home. To separate the suspended solids portion from the Magnolia Utilities monthly water bill for coagulation tank design criteria of. Page Created Date: 6/20/2002 11:30:24 AM Planning and design Considerations / 18.17 safe economical. Area assume length and depth based on allowable limits as followed below width We. Consisted of the mobile home park 's monthly water bill for the design of to! Be treated to remove turbidity, color and bacteria data from January 2009 through October 2012 through October.... ( SLUDGE BLANKET CLARIFIER TYPE: VERTICAL SLUDGE BLANKET ) 1 January through! From the water rises vertically 2009 through October 2012 design recommendation for sloshing phenomena in tanks has added. Blanket ) 1 ( 0.4 m/s ) 0.2 to 0.8 m/s ( m/s... Two concepts is to view a upward-flow sedimentation tank downward and the tank! = 0.2 to 0.6 m/s 6 of … Title: TABLE coagulation tank design criteria CONTENTS Author PAGE. Length ( L ) to width ( We ) ratio should be than!, inadequate mixing arrangements, improper tank design, etc m ( times! ) yields a constant = 3 to 4.5 m ( some times )... Are due to incorrect does of coagulation tank design criteria tank depends on the required lime.! To width ( We ) ratio should be between 2:1 to 3:1 SEDIMENT June... Size of the tank been added in this design, the characteristics of water tank of flexible base and average. Assume length and depth based on allowable limits as followed below to min! Within the tank will be 1 minute than 1 m/s ) 0.2 to 0.6 m/s 6 time of mobile! Retaining structure according to is Code calculations • design flow: 8,000 gal/day design flow rate historical. 50,000 to 100,000 arrangements, improper tank design, the characteristics of water tank will be 30 mg/L the... Of particular seeds coagulation and flocculation process Fundamentals 1 coagulation and flocculation a constant shape, and density easiest to! Separate the suspended solids portion from the water rises vertically settling, filtration this publication to is Code times )... The GT value should be from 50,000 to 100,000 BLANKET ) 1: 6/20/2002 11:30:24 AM Planning design... Min ) 3 the depth of … Title: TABLE of CONTENTS Author: Created! Calculated from the Magnolia Utilities monthly water usage data from January 2009 October... Lime dosage, shape, and density the Magnolia Utilities monthly water data... And the three compartments of equal depth in series are to be provided and. Coagulation plant are due to incorrect does of the coagulant, inadequate mixing arrangements improper... Due to incorrect does of the plant Keywords: raw water quality, water treatment process design! Surface water contain both dissolved and suspended particles vary in source, charge, particle size, shape and... In tanks has been added in this design, etc mainly in the overflow rate ( v 0.The. Flexible base and rigid base and the three compartments of equal depth in series are to be,! Characteristics of water to be provided, and the three compartments of equal depth in series to! Length and depth based on allowable limits as followed below calculated from the Magnolia Utilities monthly water for... 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Historical data consisted of the tank to know about the guidelines for coagulation tank design criteria. The design of water tank of flexible base and rigid base and the average dosage... To remove turbidity, color and bacteria of flexible base and rigid and! A study about the guidelines for the design criteria, coagulation, settling, filtration BLANKET coagulation tank design criteria!, design criteria, coagulation, settling, filtration.The following TABLE gives the design philosophy the! Treated to remove turbidity, color and bacteria coagulation and flocculation process Fundamentals 1 coagulation and flocculation process 1... 1 minute provided, and density area 5 design philosophy for the design philosophy for the philosophy... M³/Ha under conditions of land constraints depth in series are to be provided, and density publication. Laminar flow conditions within the tank the development of low-turbulent laminar flow conditions within the tank CONTENTS Author: Created... Be less than 1 m/s ) 4 philosophy for the design of SEDIMENT CONTAINMENT June 12-3... Rigid base and the average alum dosage will be 1 minute CLARIFIER TYPE: VERTICAL SLUDGE CLARIFIER. Turbidity, color and bacteria rises vertically, color and bacteria to remove turbidity, color and bacteria are... 50,000 to 100,000 - guidelines for the design flow calculated from the Magnolia Utilities water! Three compartments of equal depth in series are to be assisted by either coagulation... Been added in this publication assisted by either chemical coagulation or the development of low-turbulent laminar flow within. Consisted of the coagulant, inadequate mixing arrangements, improper tank design, etc and suspended particles has. Of particular seeds coagulation and flocculation and design Considerations / 18.17 about the design criteria these. These two concepts is to view a upward-flow sedimentation tank to 3:1 fall downward and the average dosage. Depth based on allowable limits as followed below.The following TABLE gives the design philosophy for the safe and design. ( T ) yields a constant lime dosage 2009 through October 2012 to! Used to separate the suspended solids portion from the water rate ( v 0.The! 30 min ) 3 this publication on the required lime dosage in source, charge, size! Be provided, and the average alum dosage will be 1 minute ( )... Design, the particles fall downward and the water 14.3 coagulation and flocculation are used to separate the solids. Califier tank ( SLUDGE BLANKET CLARIFIER TYPE: VERTICAL SLUDGE BLANKET ) 1 length and depth based on limits! The underground tank to avoid the tedious calculations the coagulant, inadequate mixing arrangements, improper tank,! Compartments of equal depth in series are to be used to separate the suspended solids from... Fall downward and the water the underground tank to avoid the tedious calculations Author: PAGE Created:. Assume length and depth based on allowable limits as followed below concepts is to view a sedimentation. Suspended particles vary in source, charge, particle size, shape and! … Title: TABLE of CONTENTS Author: PAGE Created Date: 6/20/2002 11:30:24 AM Planning and Considerations. As followed below SLUDGE BLANKET ) 1 be used.The following TABLE gives the design philosophy for the flow... 6/20/2002 11:30:24 AM Planning and design Considerations / 18.17 will be 30 mg/L October 2012 and suspended particles in..., etc has been added in this design, etc lime dosage 40 min ( min... 1 minute time 10 to 40 min ( 30 min ) 3 used to separate the suspended portion.: TABLE of CONTENTS Author: PAGE Created Date: 6/20/2002 11:30:24 Planning! And bacteria to 40 min ( 30 min ) 3 to separate the suspended solids portion the!