RECIRCULATING SAND FILTER SYSTEM COMPONENT QUIZ
Contents
1. 83 Letter j represents 84 Letter k represents 85 The minimum distribution cell area is calculated by dividing the design wastewater flow by a design loading rate of 5gpd ft A true B false www garyklinka com 11 of 19 86 The sand filter container is a watertight closed top vessel A true B false 87 A 4 underdrain pipe with slots or holes is placed on the bottom of the container to collect the filtered effluent Installation orientation of the slots or holes must be on the bottom of the underdrain pipe The collection pipe extends outside the sand filter container to the recirculation tank A true B false 88 A layer of stone aggregate meeting the specifications listed in Table 1 is placed in the bottom of the tank to a depth of at least equal to the bottom of the collection pipe The stone aggregate provides a means for the filtered effluent to flow to the collection pipe A true B false 89 A layer of pea gravel meeting the specifications listed in Table 3 is placed over the effluent collection stone aggregate and filtered effluent collection pipe to a depth of at least three inches The pea gravel acts a barrier so the filter media does not migrate into the collection stone aggregate and pipe A true B false 90 A three foot layer of sand media meeting the specifications listed in Table 1 is placed on top of the pea gravel to provide filtration and treatment of the effluent The top of the filter2. Comm 83 43 6 Wis Adm Code 4 The Forward flow must be A lt 2250 gal per day B lt 150 gal day bedroom C Design wastewater flow DWF D gt 150 of estimated wastewater flow in accordance with Table 4 of this manual or s Comm 83 43 6 Wis Adm Code 5 Distribution cell area per orifice size for a sand filter media tank must be A lt 2250 gal per day B lt 4 ft C 4 fi D lt 6 ft www garyklinka com 2 of 19 6 Design loading rate DLR for a sand filter media tank must be A 5 gpd ft2 based on forward flow B lt 4 ft C gt 5 gpd ft2 based on forward flow D lt 6 ft Table 2 SIZE 7 Surge volume in recirculation tank or chamber must be A gt Depth as required by pump manufacturer B gt 2 2 x DWF C 2 3 DWF D gt DWF 2 8 Reserve volume in recirculation tank or chamber must be A gt Depth as required by pump manufacturer B 222x DWF C 2 3 DWF D gt DWF 2 9 Recirculation tank capacity must be A gt Depth as required by pump manufacturer B 222x DWF C 2 3 DWF D gt DWF 2 10 Pump protection volume capacity in recirculation tank or chamber A gt Depth as required by pump manufacturer B gt 2 2 x DWF C 2 3 DWF D gt DWF 2 11 Orifice spacing along lateral for a sand filter media tank must be A gt 37 inches B gt DWF DLR C lt 24 inches D 2 of spacing between laterals or 12 inches whichever is less 12 Total distribution
3. the center of the filter s width C 7 5 feet D lt 10 E lt 15 F Aggregate Maximum minimum Gradation ASTM Standard C33 Size 4 coarse aggregate 24 Location of observation pipes must be A gt Two 4 inch pipes extending from the filter media aggregate interface to finished grade B Located at a distance equal to approximately 1 6 the distribution cell length from each end along the center of the filter s width C gt 5 feet D lt 10 E lt 15 F Aggregate Maximum minimum Gradation ASTM Standard C33 Size 4 coarse aggregate 25 Number of observation pipes must be A gt Two 4 inch pipes extending from the filter media aggregate interface to finished grade B Located at a distance equal to approximately 1 6 the distribution cell length from each end along the center of the filter s width C gt 5 feet D lt 10 E lt 15 F Aggregate Maximum minimum Gradation ASTM Standard C33 Size 4 coarse aggregate DEFINITIONS 26 Defines a valve that opens to allow effluent from the filter media to be discharged totally to the recirculation tank during low or no wastewater flow conditions By pass valve By pass zone Infiltrative surface Recirculation rate Recirculating sand filter system Recirculation tank nmuounuvr www garyklinka com 5 of 19 27 Defines a volume of liquid in a recirculation tank that is designed to provide the filter with sufficient liquid to keep the filter active when
4. 93 Letter a represents 94 Letter b represents 95 Letter c represents 96 Letter d represents 96 Letter e represents 97 Letter f represents 98 Letter g represents www garyklinka com 13 of 19 Table 5 Maximum Manifold Length Based on Individual Lateral Flow Rates Use below diagram for questions 99 106 Table 5 Maximum Manifold Length Based on Individual Lateral Flow Rates and d E f g Diameter Diameter Diameter Diameter Manifold Manifold Manifold Manifold 99 Letter a represents 100 Letter b represents 101 Letter c represents 102 Letter d represents 103 Letter e represents 104 Letter fP represents 105 Letter g represents 106 Letter h represents www garyklinka com 14 of 19 Table 6 Friction Loss foot 100 feet in Plastic Pipe Use below diagram for questions 107 113 Table 6 Friction Loss foot a feet in Plastic Pipe 100 2 GPM 10 Velocities 1n this area 2 are below D feet per second 1 14 Nominal Pipe Size Flow in Velocities in this area exceed d ft per second which are not acceptable velocity for this pipe diameter Note a Table is based on Hazen Williams formula h 0 002082L x 100 C 5 x gpm 83 p d5 Where h Feet of head L Length in feet C Friction factor from Hazen Williams 145 for plastic pipe gpm gallons per minut
5. cell area for a sand filter media tank must be A gt 37 inches B gt DWF DLR C lt 24 inches D 2 of spacing between laterals or 12 inches whichever is less 13 Depth of filter tank for a sand filter media tank must be A gt 37 inches B gt DWF DLR C lt 24 inches D 42 of spacing between laterals or 12 inches whichever is less 14 Spacing between laterals for a sand filter media tank must be A gt 37 inches B gt DWF DLR C lt 24 inches D 42 of spacing between laterals or 12 inches whichever is less www garyklinka com 3 of 19 15 16 17 18 19 20 21 Table 3 OTHER SPECIFICATIONS Depth of stone aggregate over effluent distribution network must be A 3 inches B gt 24 inches C gt 2 inches D gt 2 to lt 6 inches E gt 6 inches Depth of filter media must be A 3 inches B gt 24 inches C gt 2 inches D gt 2 to lt 6 inches E gt 6 inches Depth of stone aggregate under a effluent distribution network must be A 3 inches B gt 24 inches C gt 2 inches D gt 2 to lt 6 inches E gt 6 inches Depth of pea gravel over underdrain pipe must be A 3 inches B gt 24 inches C gt 2 inches D gt 2 to lt 6 inches E gt 6 inches Depth of stone aggregate for underdrain effluent collection must be A 3 inches B 24 inches C gt 2 inches D gt 2 to lt 6 inches E gt 6 inches Stone aggregate sieve specifications mus
6. com 16 of 19 Fig 6 Flow splitter fitting using pipe fittings Use below diagram for questions 125 ROOF HEF E cb 125 Letter a represents 126 Letter b represents 127 Letter c represents 128 Letter d represents 129 Letter e represents 130 Letter f represents 131 Letter g represents 132 The pipe connecting the by pass valve to the discharge pipe is installed on the discharge side of the flow control fitting by the use of a short turn tee fitting A true B false Fig 8 By pass valve using float ball Use below diagram for questions 133 138 www garyklinka com 133 Letter a represents 17 of 19 134 Letter b represents 135 Letter c represents 136 Letter d represents 137 Letter e represents 138 Letter f represents 139 Letter a represents 140 Letter b represents 141 Letter c represents 142 Letter d represents 143 Letter e represents 144 Letter f represents Fig 9 By pass valve using float valve Use below diagram for questions 139 145 a Mou u e 145 The cover over the distribution net work must extend to final grade and be of either wash aggregate or decorative rock All surface waters must be diverted away from the sand filter A true B false 146 The sand filter is dosed by timed doses The recirculation tank or chambe
7. false 59 Elevation at which the by pass valve opens Elevation required in the tank to hold a volume of liquid equal to the DWF A true B false 60 The minimum elevation of the inlet invert is determined by dividing the sum of the required volumes of the by pass valve zone surge zone and reserve zones by the gallons per inch value of the tank A true B false Step C Design of the Recirculating Sand Filter Component Fig 3 Formed sand filter Use diagram for question 61 73 www garyklinka com 9 of 19 61 Letter a represents 62 Letter b represents 63 Letter c represents 64 Letter d represents 65 Letter e represents 66 Letter f represents 67 Letter g represents 68 Letter h represents 69 Letter 1 represents 70 Letter j represents 71 Letter k represents 72 Letter T represents 73 Letter m represents Fig 4 Sand filter in a tank Use diagram for question 74 77 p a b www garyklinka com 10 of 19 74 Letter a represents 75 Letter b represents 76 Letter c represents 77 Letter d represents Fig 4 Sand filter in a tank Use diagram for question 78 84 78 Letter e represents 79 Letter f represents 80 Letter g represents 81 Letter h represents 82 Letter i represents
8. media is leveled A true B false 9 The distribution network spreads the septic tank effluent as uniformly as possible over the sand filter surface The network consists of a manifold and laterals Typical design consists of A Orifices orifices shall be located upward with orifice shields or a half pipe protecting the orifices from becoming blocked by aggregate B Laterals laterals are spaced two feet apart with an upturned long sweep elbow and valve for clean out The lateral length can not exceed that indicated in Graph 1 for various diameters Laterals are sloped back in order to provide drainage of the lateral between doses C Manifold manifolds slope back to provide drainage of the manifold between doses The manifold is sized using Table 5 D all of the above 92 The distribution network spreads the septic tank effluent as uniformly as possible over the sand filter surface The network consists of a manifold and laterals Typical design consists of A Force main Force mains slope back to provide drainage of the force main between doses The force main is sized using Table 6 B Recirculation tank pump the pump is sized to meet flow rate and lateral pressure of at least five feet at distal end C both A amp B D A only E B only www garyklinka com 12 of 19 Graph 1 Minimum Lateral Diameter Based on Orifice Spacing for 1 8 Diameter Orifices Use below diagram for question 93 98 160 Lf LAA
9. Education Credits follow the below instructions 1 Click on course print out circle answers mail in the course only amp keep the manual 2 Fill in all fields applicable 3 Include your certification or license number 4 We ll take care of crediting with the state and mailing back to you the quiz results Send by mail www garyklinka com 1 Answer sheets Fee 99 00 2 Fill out this form below completely 3 Applicable fees by check payable to Gary Klinka 4 Mail to Gary Klinka at 228 Mandella Ct Neenah WI 54956 5 Questions office 920 727 9200 fax 888 727 5704 including Saturday and Sundays 6 Cell 920 740 4119 or 920 740 6723 amp by email aklinka hotmail com Attendee s Name Date Address Credential Number Phone Course Title and Name Sand Filter Quiz Fax List the name of each credential held by attendee Credited Hours 12 hours Fee 99 00 Email To be completed by Gary Klinka My credential link 70172 Course Password Course ID 8305 Attendee passed the course with a greater than 70 score on Date Instructor Signature
10. consists of a recirculation tank or chamber and a fixed film aeration process unit in which wastewater passes through a porous media A true B false 33 Oxygen diffuses into the thin film of vapor as air passes through the media by convection due to temperature differences www garyklinka com 6 of 19 A true B false 34 The filter is of such coarse material that orifices may only cover forty square feet of surface area A true B false 35 Physical entrapment increased retention time and conversion of pollutants in the wastewater are important treatment objectives accomplished under unsaturated conditions A true B false Figure 1 indicates the flow path of a recirculating sand filter system Use diagram for questions 36 40 e 36 Letter a represents 37 Letter b represents 38 Letter c represents 39 Letter d represents 40 Letter e represents soil IV DESIGN 4 Recirculating Sand Filter System Component Design Detailed plans and specifications must be developed reviewed and approved by the governing unit having authority over the plan for the installation A Sanitary Permit must also be obtained from the department or governmental unit having jurisdiction A true B false 42 Design of the recirculating sand filter system component is based on the estimated wastewater flow It must be sized such that it can accept the daily wastewater flow at a rate that will provide tr
11. e d Nominal pipe size 107 Letter a represents 108 Letter b represents 109 Letter c represents 110 Letter d represents 111 Letter e represents 112 Letter f represents 113 Letter g represents 114 At least observation pipes are placed extending from the top of the filter media stone aggregate interface to finish grade to monitor for ponding and or formation of a clogging mat A 1 B 2 C 3 D 4 www garyklinka com 15 of 19 115 116 117 118 119 120 121 122 123 The pipes must be secured and have perforations in the bottom inches A 1 B 2 C 3 D 4 Fig 5 Observation pipes Use diagram below for question 116 123 a b _ F c f IT h Letter a represents Letter b represents Letter c represents Letter d represents Letter f represents Letter g represents Letter h represents The sand filter effluent drains by gravity through the recirculation tank The filtered effluent drain pipe is installed with a means of diverting 55 to 65 of the effluent to the recirculation tank and with a low liquid level by pass valve to divert all of the effluent into the recirculation tank during low or no flow conditions 124 A true B false The filtered effluent drain pipe diverts 55 to 65 of the effluent into the recirculation tank by the use of a special flow splitter fitting A true B false www garyklinka
12. eatment A true B false www garyklinka com 7 of 19 43 One and two family dwellings The infiltrative surface size for one and two family dwelling application is determined by calculating the designed wastewater flow DWF A true B false Step B Design of the Recirculation Tank or Chamber 44 This section determines the required liquid capacity and depth of the recirculation tank or chamber as well as the operation elevation of the by pass valve high water alarm and low level emergency pump cut off A true B false Figure 2 Cross section of recirculation tank Use for questions 45 54 45 Letter a represents 46 Letter b represents 47 Letter c represents 48 Letter d represents 49 Letter e represents 50 Letter f represents 51 Letter g represents 52 Letter h represents 53 Letter i represents www garyklinka com 8 of 19 54 Letter j represents 55 Minimum liquid capacity of recirculation tank or chamber 2 2 x DWF A true B false 56 Gallons per inch of tank or chamber capacity in gallons X liquid depth in inches A true B false 57 The volume of a single dose is determined by multiplying the 2 3 of the DWF by the recirculation rate then dividing by the number of doses per day Number of doses per week must between 24 and 48 A true B false 58 Reserve zone capacity DWF x 2 A true B
13. r must provide for surge loading and surge forward volumes A true B false www garyklinka com 18 of 19 147 The excavation for a recirculating sand filter is made 6 to 12 larger than the filter Untreated plywood wafer board or other suitable material is formed into a box to support the liner and allow the liner to be draped over the top Only sand is placed between the frame and soil to protect the liner after the plywood has decomposed Approximately 1 of sand is placed in the bottom of the excavation prior to placement of the liner The top of the liner must be above the seasonal high water table so groundwater does not flow into the sand filter A true B false 148 Recirculating sand filter system Install a four inch diameter underdrain filtered effluent collection pipe with slots or holes by placing it on the bottom of the sand filter tank and connecting it to solid wall pipe prior to exiting the tank The installation orientation of the slots or holes must be on the side of the underdrain pipe The opening in the tank wall shall be sealed by use of a gasket A true B false 149 The component owner is responsible for the operation and maintenance of the system The county department or POWTS service contractor shall make periodic inspections of the components and effluent levels etc A true B false 150 Design approval and site inspections before during and after the construction are accomplished by the count
14. t be A Two 4 inch pipes extending from the filter media aggregate interface to finished grade B Located at a distance equal to approximately 1 6 the distribution cell length from each end along the center of the filter s width C 7 5 feet D lt 10 E 1596 F Aggregate Maximum minimum Gradation ASTM Standard C33 Size 4 coarse aggregate Difference in flow between any two orifices in the effluent distribution network would be A 2 Two 4 inch pipes extending from the filter media aggregate interface to finished grade B Located at a distance equal to approximately 1 6 the distribution cell length from each end along the center of the filter s width C 7 5 feet www garyklinka com 4 of 19 D lt 10 E lt 15 F Aggregate Maximum minimum Gradation ASTM Standard C33 Size 4 coarse aggregate 22 Difference in flow between any two orifices in a single lateral A Two 4 inch pipes extending from the filter media aggregate interface to finished grade B Located at a distance equal to approximately 1 6 the distribution cell length from each end along the center of the filter s width C 7 5 feet D lt 10 E 1596 F Aggregate Maximum minimum Gradation ASTM Standard C33 Size 4 coarse aggregate 23 Head pressure on orifice must be A Two 4 inch pipes extending from the filter media aggregate interface to finished grade B Located at a distance equal to approximately 1 6 the distribution cell length from each end along
15. the recirculation tank is receiving little or no flow from a facility By pass valve By pass zone Infiltrative surface Recirculation rate Recirculating sand filter system Recirculation tank 28 Defines a top layer of media that receives effluent from a distribution network A By pass valve B By pass zone C Infiltrative surface D Recirculation rate E Recirculating sand filter system F Recirculation tank 29 Defines the portion of the wastewater effluent that is delivered back into the system compared to the wastewater effluent that is not delivered back into the system A By pass valve B By pass zone C Infiltrative surface D Recirculation rate E Recirculating sand filter system F Recirculation tank 30 Defines an onsite wastewater treatment component which contains a recirculation tank and an effluent filtering component which treats wastewater bypassing it through the system more than once A By pass valve B By pass zone C Infiltrative surface D Recirculation rate E Recirculating sand filter system F Recirculation tank 3 Defines the tank which receives effluent from a septic treatment tank and sand filter and doses the sand filter gt muUo By pass valve By pass zone Infiltrative surface Recirculation rate Recirculating sand filter system Recirculation tank IIl DESCRIPTION AND PRINCIPLE OF OPERATION monu 32 POWTS recirculating sand filter system component operation
16. www garyklinka com 1 of 19 RECIRCULATING SAND FILTER SYSTEM COMPONENT QUIZ 12 Hours of CEU credits for the following credentials Fee 99 00 Powts Maintainer Qualifier Powts Maintainer Powts Restricted Technology Installer registration Soil Tester Powts Inspector Master Plumber Restricted Service Journeyman Plumber Restricted Service Master Plumber Journeyman Plumber Instructions www garyklinka com 1 Print these pages 2 Circle the correct answers and transfer to the answer sheet on the last page 3 Page down to the last page for the verification forms and mailing instructions 4 Download Manual Click Here INFLUENT FLOWS AND LOADS Table 1 1 The design wastewater flow DWF from one and two family dwellings must be A lt 2250 gal per day B lt 150 gal day bedroom C Design wastewater flow DWF D 150 of estimated wastewater flow in accordance with Table 4 of this manual or s Comm 83 43 6 Wis Adm Code 2 The design wastewater flow DWF from primary treatment tanks must be A lt 2250 gal per day B lt 150 gal day bedroom C Design wastewater flow DWF D 150 of estimated wastewater flow in accordance with Table 4 of this manual or s Comm 83 43 6 Wis Adm Code 3 The design wastewater flow DWF from public facilities must be A lt 2250 gal per day B lt 150 gal day bedroom C Design wastewater flow DWF D gt 150 of estimated wastewater flow in accordance with Table 4 of this manual or s
17. y or other appropriate jurisdictions in accordance to Comm 83 of the Wis Adm Code A true B false 151 The septic and recirculation tanks are to be inspected and maintained at least every three years If the scum and sludge occupies 1 3 of the tanks volume the tank shall be pumped and its contents properly disposed of If the tank is not pumped at this time it shall be pumped when the scum and sludge occupies 1 3 of the tanks volume A true B false 152 Inspections of recirculating sand filter component performance is required at least every six months for the first two years Then once a year for the next two years Then once every three years thereafter These inspections include checking the liquid levels in the observation pipes and examination for any seepage around the filter A true B false 153 User s Manual A user s manual is to accompany the recirculating sand filter component The manual is to contain the following as a minimum A Diagrams of all system components and their location B Specifications for electrical and mechanical components C Names and phone numbers of local health authority component manufacturer or management entity to be contacted in the event of a failure D Information on the periodic maintenance of the recirculating sand filter system including electrical and mechanical components E none of the above F all of the above www garyklinka com 19 of 19 To obtain your Continuing
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