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<br /> STEPS TO CLEAN WATER
<br /> The process flaw diagrams shown below sedimentation basins while the industrial of dissolved and colloidal material cell growth. Settled sludge is removed by mixing chlorine gas and water. The are combined and pumped to the
<br /> graphically depict the path domestic and stream is pumped to the aerated lagoon. remaining in the water after primary from the bottom of the clarifiers. Return chlorine solution is added at the flash digesters. The sludge is processed in
<br /> industrial wastewater takes through the sedimentation. Air accomplishes two activated sludge(RAS)is used to seed mixer to disperse the chemical. After an airless(anaerobic)environment
<br /> White Slough treatment facility as it is PRIMARY SEDIMENTATION things:first,the organisms are brought the new influent wastewater to produce disinfection,some residual chlorine is by bacteria that stabilizes the material
<br /> being treated. Quiescent conditions in the primary into contact with the dissolved pollutants the mixed liquor and repeat the cycle. To present and represents a toxic hazard to and creates a useful material called
<br /> sedimentation basins permit the heavier they can use as food,and second,oxygen prevent overpopulation of the organism the aquatic life in the Delta. To remove biosolids that is distributed with plant
<br /> PRELIMINARY TREATMENT solids to settle to the bottom of the basins is available for use in converting food and a shortage of air and food,a portion this threat,the chlorine is neutralized effluent onto agricultural land. The
<br /> Raw domestic and industrial wastewater where they are collected and pumped into cell growth. Blowers provide the of the activated sludge is pumped to the by the addition of sulfur dioxide digestion process also produces methane
<br /> travels approximately 5 miles from the to the anaerobic digesters. Fats and air required by the process.Flow leaving sludge thickeners. (dechlorination). gas;this gas is recycled on site,firing
<br /> City of Lodi and enters the White Slough greases are skimmed off the top of these the aeration basins is directed to a dis- boilers which keep the digesters'
<br /> headworks. Here the flows are measured basins and also sent to the digesters. tribution box and then on to the DISINFECTIONAND IIECHLORINATION AIR FLOTATION THICKENERS temperatures between 95 and 100
<br /> and special grinders reduce the size of secondary clarifiers. Disinfection and dechlorination of the The solids removed from the secondary degrees F,the optimum environment
<br /> the coarse material. A grit removal 443AERATION BASINS wastewater is performed prior to clarifiers are pumped to the flotation for peak biological activity.
<br /> facility removes inert material such as In the aeration basins,air is introduced 0 SECONDARY CLARIFIERS discharge to White Slough. The effluent thickeners to be thickened before being INDUSTRIAL TREATMENT
<br /> sand,rocks,egg shells,and seeds from to mix the basin contents and to transfer Sedimentation is an integral part of the leaving the secondary clarifiers contains sent to the anaerobic digesters. Following preliminary treatment,
<br /> the stream. This material is dewatered oxygen into the"mixed liquor." This biological treatment process. After aera- large numbers of biological organisms, industrial flaws are first heated in the
<br /> at the grit washing facility arid sub- promotes contact between the waste tion,the mixed liquor is settled in the Some of these may be pathogenic(disease ANAERDBIC DIGESTERS aerated lagoon. They then pass into the
<br /> sequently disposed of at a landfill. water and microorganisms contained in quiescent secondary clarifiers,thereby causing)organisms. To protect public Sludge and scum from the primary skilnnling pond and on to the storage
<br /> Variable speed pumps lift the domestic the mixed liquor in the presence of removing the organic pollutants that ! health,the effluent is disinfected using a sedimentation basins and the thickened ponds. Flows are pumped to irrigation
<br /> wastewater up into the primary oxygen to allow biological assimilation have been converted into biological chlorine solution produced at the plant sludge from the flotation thickeners from the equalization pond.
<br /> DOMESTIC
<br /> PRIMARY CHLORINE
<br /> PRELIMINARY TREATMENT SEDIMENTATION AERATION DISTRIBUTION SECONDARY FLASH CONTACT FLOW
<br /> (HEADWORKS) BASINS BASINS BOX CLARIFIERS MIXER TANKS MEASUREMENT
<br /> TO IRRIGATION/
<br /> IN I OUTFALL
<br /> CL2 SO2
<br /> l— F :..: RAS
<br /> (----------- i I SOLUTION
<br /> Z w GRIT UNDERFLOW CL2
<br /> RETURN AIR -----------------I -- SULFUR
<br /> Z z BLOWER I METERING (�!D
<br /> DIOXIDE
<br /> � U PS TO • —� -----� TANK
<br /> P (2) HEADWORKS CL2
<br /> DETRITORS TWAS WAS SOLUTION
<br /> z
<br /> GRIT HEAT (2)DISSOLVED SECONDARY SLUDGE CHLORINE
<br /> WASHING EXCHANGER DIGESTERS AIR FLOTATION PUMPING BUILDING METERING TANK
<br /> GRIT HOPPER THICKENERS
<br /> SLUDGE LAGOON ..:x::.;
<br /> ��[[ �^
<br /> IRRIGATION '��
<br /> INDUSTRIAL 1 IAL Y
<br /> 4E#3ATED ': SiCiMiv111VG STORf1GE ,', EQUALIZATION[ IRRIGATION
<br /> LAGOON PO.Nt3 PONDS POND
<br /> PROCESS FLOW CHART
<br /> DESIGN CRITERIA
<br /> Easic Design Influent Pumps Secondary Clarification Irrigation Pumping Heat Exchangers
<br /> Average Dry Weather...............................................8.5 mgd Domestic,12 inelr..........................................2 Clarifiers Pumps........................................... .....3 Number......................._..................................3
<br /> .........................
<br /> Peak Wet Weather Row.........................................-15.6 nngd M inch..........................................1 Size:100'diameter x 16'SWD......................2 Capacity each,gpm................ 4,500 Capacity each,Btu/hr................ ....500,000
<br /> Industrial,12 inch..........................................f OverRow rate,gal/sq ft/day.................--541
<br /> Wastewater Loadings M inch..........................................1 Pumps Flotaliun Thickeners Sludge Lagoons
<br /> BODAs'g,Concentration... .............220 m /L Return ..................................3 Number-................................................................ 2 Number................................................................ 2
<br /> Suspended Solids,Avg.Cone.................................240 mg/L Primary Sedimentation Capacity each,gpm.......................................2,000 Surface Area,sq ft.....................................................10(,00 Volume,total cu ft.....................................................530,000
<br /> Basins Waste sludge pumps...................................A 1®300
<br /> Headworks Size:90'x 20'x 8'SWD .....
<br /> ................. .......5 Capacity each,gpm.......................................700 Hydraulic Loading,gpm/sq ft...............................0.30
<br /> .....
<br /> Parshall Plumes Detention time,hours........... 1,5
<br /> Domestic,24 inch..........................................1 Pumps Chlorination-Dechlurination Sludge Digestion
<br /> hidusirial,18 inch.........................................I Primary sludge and scum............................10 Chlorine Contact Time,min....................-...............182 Digesters
<br /> Comminutors Capacity,gpm................................................175 Chlorinators Size:45'diameter x 25'SWD........................3
<br /> Domestic,25 inch..........................................2 2000 lb/day capacity ty....................................2 Detention Time,days
<br /> 16-22
<br /> Industrial,25 inch....................... Aeration 511lhlda capacity........................ .1 Gas Production,cu h day...........................111,400
<br /> Crt Facilities Bashs Sulfanators
<br /> Detritors,16 foot diameter...........................2 Size.137'x 30'x 15'SWD.............................A 1000 lb/day capacity....................................2
<br /> Cyclone and classifier...................................1 Detention time,hours...................................5.2
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