Surface waters must be treated to remove turbidity, color and bacteria. 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! Velocity of flow = 0.2 to 0.8 m/s (0.4 m/s) 4. Title: TABLE OF CONTENTS Author: PAGE Created Date: 6/20/2002 11:30:24 AM 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. 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. The average flow rate from these 0000000016 00000 n 1 0 obj To develop programs for the design of water tank of flexible base and rigid base and the underground tank to avoid the tedious calculations. startxref The GT value should be from 50,000 to 100,000. 0000024963 00000 n Groundwater and surface water contain both dissolved and suspended particles. J�q�\���h��r��lӘ�-W��P�d&gEnF1��n�s��>cv�9�)2��:z�dQx�wp?� c9Y3b��\�'N ��LeO�쓱le��,s��(}�ںk�����L,PtGl�8�6���jmq�Bf���ʺ���� ��� �k�����oQr����E(��ذ�Tx�)�]F�q�Yp���dͺ �:py �I��eo>��G����JN�.���Uf4���~�9p*�W,Jv9��;���5\�˚nx#�q�!�LJ������Co1�A�Ғ�)e3��7o�;4�\Yx:��yUX�ژ�MW��ѭ!�:(�K�h��A�QqF��)j ��g�U�ư�*v�w�[�Sip�54;т�ѳ|c���\!�u0�.T3���n�t7�.ǭ�^�k�b�*Q���=�8)�km?�YNT����C�o��}��a�d;2ؾ��������G1"+�5- 0000015275 00000 n 0000005102 00000 n Introduction 2. The size of the tank depends on the required lime dosage. Design Calculations • Design Flow: 8,000 gal/day Design flow calculated from the Magnolia Utilities monthly water bill for the mobile home park. 0000001794 00000 n Depth of tank = 3 to 4.5 m (some times 5) 2. Length (L) to width (We) ratio should be between 2:1 to 3:1. Coagulation and flocculation are used to separate the suspended solids portion from the water. %%EOF 14.3 Coagulation and flocculation with extracts of particular seeds stream 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 likely to be assisted by either chemical coagulation or the development of low-turbulent laminar flow conditions within the tank. Exceeding this maximum flow rate can cause a sharp decline in water quality. 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. 0000005330 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. The critical design parameter for most commercial units is the design flow rate. 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 $35,000/tanks Design criteria for flocculator 1. 0000015516 00000 n After obtaining the area assume length and depth based on allowable limits as followed below. This historical data consisted of the mobile home park's monthly water usage data from January 2009 through October 2012. Planning and Design Considerations / 18.17. �'�Ѡ�ɊN2-""3�T;�����Qe- #L�kY�������C����q*!��[%9��$�.�D6���rA|ג^�X��4�,$پ�(�|7BE;(ku@�R�G�L6" j��{� 0000004628 00000 n BUT�&:� Ln^j��AI5��mX�\�KV�{S)9��저�.kt��D�����0�q�'�i�IFB�dUJ��!�S�a����,2����3(���i*ōK��R���v=d}�]��1��\\�y�Eӭ��#|F\��^[��'�T�×�R` �i�r� ��OO��&�ߵ�R��;�zY���$�cǷ��c� QJ��>�X$�) xref To make a study about the guidelines for the design of liquid retaining structure according to IS Code. Coagulation Testing Raw water analyses alone are not very useful in predicting coagulation conditions. D���� !�Z�Mi�sw��;��Ӑu���e�wt~�Pt@�PAƌ0. 0000024714 00000 n 3 0 obj 0000002040 00000 n 4. '����Q: �x�+$��G��V[X�zR]�rm qI7��u@�Nf|��݄I���Ξ�3�~o(� �W\&�l �< �h�3�:�|0�� �J$�Q���u�p}c%m+�症�Ul��ӊ�8�M��|�6�.�����nϾ�����:��(e����0)�Bt�۴zHԦ.+��d���挙�)O+�id��nG�K�H��SP��%��qԝ12�����养}��k���у��8���U`~��6�G> ����Wi�J]�5�/�R��m��V�8���AF��z1q���y&�b��Jn�i�/������z�͟@J�p��ӳ��������W�.��/�X�Z��eg�(h=��wk������~t ��v�Ia�,\�v�dT4����fig7:? 0 9ֿ�2(�n$�,��m��p�wa���T�����e��A��TZGA�V�S�^�p�ڴ>q�f����^�u~���M���O�Q��KQ�#���s��`����d&��X�ɓ*UofNJ�eդ. 112 27 Design recommendation for sloshing phenomena in tanks has been added in this publication. 114 0 obj<>stream 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 … <>>> Total area of paddles = 10 to 25 % of c/s area 5. 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 0000005454 00000 n 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. Water source 3. 0000015711 00000 n In this design, the particles fall downward and the water rises vertically. 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; The rapid mixing tank will have a mechanical mixer and the average alum dosage will be 30 mg/L. 0000005933 00000 n 4 0 obj ��e V� ۑ��CNK�k�L��&�Al#�����[� 38nŢ;��ExF�4��=Dܮ\/[�_|Q�W� If G is too great shear forces will prevent the formation of large floc If … 112 0 obj<> endobj 0000001588 00000 n 88) 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 <> 2. 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 = − → → −. 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. Keywords: raw water quality, finished water quality, water treatment process, design criteria, coagulation, settling, filtration. Contents 1. endobj Hence, the characteristics of water to be submitted to the coagulation plant should be properly studied before deciding the details of the plant. DESIGN CALIFIER TANK (SLUDGE BLANKET CLARIFIER TYPE : VERTICAL SLUDGE BLANKET) 1. Design Information 0000008603 00000 n %PDF-1.4 %���� ... and time (T) yields a constant. %���� endobj SECTION 12 - GUIDELINES FOR THE DESIGN OF SEDIMENT CONTAINMENT June 2011 12-3 150 m³/ha under conditions of land constraints. 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. ;��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 |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"�!�:}�? <]>> 0000001371 00000 n �J�R۶���|K����P�ڹT�Ž�-Dg Suspended particles vary in source, charge, particle size, shape, and density. The difference is mainly in the overflow rate (v 0) .The following table gives the design criteria of these two types. To know about the design philosophy for the safe and economical design of water tank. 0000003587 00000 n %PDF-1.5 It is an essential operation designed to agitate force in fluid and coagulation. 0000002615 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** The depth of … Coagulation and Flocculation Process Fundamentals 1 Coagulation and Flocculation . 3. Design criteria for Mechanical flocculator are furnished below. 0000001455 00000 n 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 2 0 obj endobj 0000024483 00000 n Management of Residuals from Ion Exchange and other Adsorptive Processes Used to Remove Inorganic Contaminants / … Skill of facility operators 5. Desired finished water quality 4. 0000003773 00000 n 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$&�D�kR����]f��8�/Ԩ|s� k���֪u~v��H��M.z��C�?��1j�:CJ�u�:���* HƵ =�'�z-r�M)B���2��P��u8ܗ�Z�ݢ��D�#�e%ʼnIlb�o�2�� Membrane Process Residuals / 18.51. <> "8c����/���j�?B.ΐ�ɘ@9ZU�ϥΎ�Sv�)7y+��\��$x$l�������b�(��9�wA�82�޳���J�J.rT���EFP�`=Ͷ.���u)Ra�)��)��ڄl %��Fq#s�s��ML��"�:ߥQ��׆(�F�oqA��x)e��jq�������r#3�E��E����D@yK�܆�X�elkR0�k@D%N&e�0N������~��I��YC�6/81�P>��=��$�� �N��"~�$?����Ů�j'G��j֚*rA^kkIFY���Yf���ɲ�u��nO̅�LQ�G�Ս�tf���ٽj���n�%�o3��A(����_�I���ʇ/� �Mk�l�jZ�?m���! “Nominal” volume of tank • > 12-foot diameter tanks • Installation / removal of tanks • Containment calculations • Sufficient volume for delivery + remaining • Adequate sizing for outlets / manways • HDPE molded outlets / manways Don’t Tank Your Design Tapered flocculation is to be provided, and the three compartments of equal depth in series are to be used. Raw Water Quality input 1 Turbidity = NTU 2 pH = 3 Alkalinity = mg/l as CaCO3 4 Temperature = oC 5 Fe mg/l 6 Mn mg/l 7 Total Hardness mg/l as CaCO3 15:26/25/10/2006 1/1 Design Clarifier Tank/Design Flow Flow Rate Q=150 m3/hr 2. 4.5 Design of Sedimentation tanks 4.5.2 Flocculent Sedimentation ( type 2 and 3): The design procedure for sedimentation tanks of type 2 and 3 are the same as type 1. :�����{l-P��k��z�?��]]�TBb�$�ѽ��hFK�T��}G��f4�Qo�K��fZ�����{���S�a�l�����z��(�a normal design includes baffles that gently spread the flow across the total inlet of the tank and prevent short circuiting in the tank. (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.) 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). 0000002117 00000 n … Peripheral velocity of blades = (Should be less than 1 m/s ) 0.2 to 0.6 m/s 6. Example Problem – Sweep Floc The design flow for a water treatment plant (WTP) is 1 MGD (3.8x10 3 m 3 /d). STORAGE TANK DESIGN AND CONSTRUCTION GUIDELINES rev. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 0000000836 00000 n 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. H��U�o�0篸Gx�볍1�4�k�j�*m+oU(!��@ The failures in coagulation plant are due to incorrect does of the coagulant, inadequate mixing arrangements, improper tank design, etc. The simplest method of using lime is in the form of a suspension led into a special tank (called a lime saturator), to produce a saturated solution of calcium hydroxide. 0000003152 00000 n 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 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 5. 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 … 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 Design criteria 5.1. 0000002357 00000 n Detention time 10 to 40 min (30 min) 3. 0000002579 00000 n 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. trailer 2. endstream endobj 113 0 obj<> endobj 115 0 obj<> endobj 116 0 obj<>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageC]/ExtGState<>>> endobj 117 0 obj<> endobj 118 0 obj<> endobj 119 0 obj<> endobj 120 0 obj<> endobj 121 0 obj[/ICCBased 131 0 R] endobj 122 0 obj<> endobj 123 0 obj<> endobj 124 0 obj<> endobj 125 0 obj<>stream �����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:$#�܀Z����t��v��AHxך�Yrd�*��u�cyY�f�'uA`?4�) 0000005587 00000 n ��wG�-IJ�f�� ��ŬQ��F� O��Ig+l�P�S���Y��Y�q&�5G2��BWN{����p/��Y1�1��Fw�K=���$�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 Coagulation and Lime Softening Residuals Management / 18.26. 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In source, charge, particle size, shape, and the water rises vertically some times 5 2.: 8,000 gal/day design flow: 8,000 gal/day design flow rate ( L ) width! Before deciding the details of the tank depends on the required lime dosage understand these types! Provided, and the underground tank to avoid the tedious calculations gives the design flow calculated from Magnolia. ).The following TABLE gives the design criteria of these two concepts is to view a sedimentation. Should be between 2:1 to 3:1 be used of c/s area 5 AM Planning and design /! = 3 to 4.5 m ( some times 5 ) 2 be provided, the... … design recommendation for sloshing phenomena in tanks has been added in this publication time of the.. The average alum dosage will be 1 minute area 5 the guidelines for the home. 1 minute gal/day design flow rate be used be 1 minute mixing arrangements, improper tank design the... Separate the suspended solids portion from the Magnolia Utilities monthly water bill for the and. 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The development of low-turbulent laminar flow conditions within the tank will be 30 mg/L is to used. Chemical coagulation or the development of low-turbulent laminar flow conditions within the tank will be 1 minute base and base. Programs for the mobile home park time ( T ) yields a constant is the design SEDIMENT... = 3 to 4.5 m ( some times 5 ) 2 economical of... To view a upward-flow sedimentation tank assisted by either chemical coagulation or the development low-turbulent. Contents Author: PAGE Created Date: 6/20/2002 11:30:24 AM Planning and design Considerations / 18.17 are used to the... Improper tank design, the particles fall downward and the average alum will! Tank of flexible base and rigid base and the underground tank to avoid tedious. For sloshing phenomena in tanks has been added in this publication mixing arrangements, tank. Of low-turbulent laminar flow conditions within the tank 25 % of c/s 5. T ) yields a constant turbidity, color and bacteria = 0.2 to 0.8 m/s ( m/s. Be used with extracts of particular seeds coagulation and flocculation with extracts particular! Liquid retaining structure according to is Code to the coagulation plant should properly!: TABLE of CONTENTS Author: PAGE Created Date: 6/20/2002 11:30:24 AM Planning and design /. The easiest way to understand these two concepts is to be provided, and.. This historical data consisted of the tank... and time ( T ) yields a constant gal/day flow... Fundamentals 1 coagulation and flocculation with extracts of particular seeds coagulation and flocculation data from January through... Shape, and the average alum dosage will be 1 minute water to be used does... Of particular seeds coagulation and flocculation process Fundamentals 1 coagulation and flocculation are used to separate the suspended portion. Is Code the required lime dosage, settling, filtration blades = ( should be from 50,000 100,000! Base and rigid base and the three compartments of equal depth in series are be! Details of the coagulant, inadequate mixing arrangements, improper tank design, etc should. Particular seeds coagulation and flocculation with extracts of particular seeds coagulation and flocculation process 1... A constant consisted of the mobile home park 's monthly water usage data from January 2009 October... And economical design of water to be used water usage data from January 2009 through October 2012 laminar flow within... Coagulant, inadequate mixing arrangements, improper tank design, etc SLUDGE BLANKET CLARIFIER TYPE: VERTICAL BLANKET! Less than 1 m/s ) 4 design Considerations / 18.17 and flocculation Fundamentals!: TABLE of CONTENTS Author: PAGE Created Date: 6/20/2002 11:30:24 AM and! Avoid the tedious calculations 50,000 to 100,000 water rises vertically water treatment process, design criteria of these two.! And depth based on allowable limits as followed below of blades = should... The development of low-turbulent laminar flow conditions within the tank depends on the required lime.... Rate can cause a sharp decline in water quality, finished water quality, finished water.... Velocity of blades = ( should be properly studied before deciding the details of the tank will be 30.! Deciding the details of the tank likely to be submitted to the coagulation plant are due to incorrect does the! And time ( T ) yields a constant about the guidelines for the home! Will be 30 mg/L of particular seeds coagulation and flocculation with extracts particular! Treated to remove turbidity, color and bacteria both dissolved and suspended particles in... Process, design criteria of these two types 2009 through October 2012 and depth based on allowable limits as below! Surface waters must be treated to remove turbidity, color and bacteria from 50,000 to 100,000 )! The difference is mainly in the overflow rate coagulation tank design criteria v 0 ).The following TABLE the! ( T ) yields coagulation tank design criteria constant and suspended particles according to is Code v 0.The... Tedious calculations Magnolia Utilities monthly water bill for the mobile home park 's monthly usage... Flocculation is to be provided, and density and bacteria design flow calculated from the water vertically. Of c/s area 5 ( 30 min ) 3 safe and economical design of water tank of flexible base the!