Western Water Products
|
Western Water Products
|
|
1.0 Water Recovery System General Specifications: AGOR-GC with Independent Sludge Removal System and Grass/Debris Catcher Tank. For applications involving grass removal such as Golf Courses. 1.01 Performance: The above ground water recovery system shall be a multi-stage system sized for a continuous flow rate capable of 0-6 GPM. The system shall be capable of continuously removing free floating and emulsified oils, grease, grass, heavy dirt and sand and filtering the recycled water to a positive 10 micron or better to avoid damaging high pressure piston or plunger style pumps. Water to be filtered is typical of that found in industrial applications such as parts washing, engine degreasing, floor cleaning, golf carts washing, mower or heavy equipment washing, etc. 1.02 Water Collection: Water shall be collected in a below ground sump. The sump shall consist of at least a single pit which shall be a minimum size of 3' x 3' x 54', and shall be constructed with a "Hopper Bottom" which shall allow for the placement of an independent sludge removal pump to facilitate the removal of sludge from the pit to an above ground mud hopper for easy disposal. If a sump must be added, as an alternate to forming the pit out of concrete, a preformed polyethylene tank (model HBP) may be used and imbedded into the concrete as long as the minimum pit size dimensions are maintained. Alternately, a 2' x 2' x 2' sand trap may be located in the middle of the wash pad and the water shall be directed to the hopper bottom pit (HBP) at another location. In either case a 650-micron corrosion resistant strainer basket shall be utilized under the primary grate to strain grass and other debris from the water prior to entering the HBP sump. See "Sample AGOR-GC Wash Pad" designs. 1.02.01 Independent Sludge Pump: The "Hopper Bottom" pit shall be provided with an independent sludge removal pump system (model SRS) to facilitate the removal of sludge from the pit to an above ground mud hopper for easy disposal. The pump shall be at least 1/3 HP in size. 1.02.02 Sludge Pump Control: The independent sludge removal pump shall be controlled by a separate UL listed timing control which is timed to come on periodically to remove sludge from the pit and place it into an above ground mud hopper for easy disposal. 1.02.03 Mud Hopper: The mud hopper shall come equipped with a device for slowly siphoning off the water and returning it to the pit while allowing the sludge to settle out in the hopper. The size of the mud hopper shall be 96 gallons minimum and shall be connected to feed and return stub-ups from the pit via 2" flexible PCV hose with quick disconnects fittings. 1.02.04 Pit Water Transfer Pump: A separate water transfer pump shall be located in the pit to transfer water to an above ground grass strainer tank located prior to the water recovery-filtering console. The transfer pump shall be housed within a 650-micron filtering barrel, which is designed to filter out grass and other debris and thereby avoid plugging the pump. 1.02.05 Transfer Pump Control: The water transfer pump shall be operated by a separate float and shall be directly connected to a 115-voltage power outlet located near the pit. The purpose of this pump is to positively feed water to the grass catcher tank. 1.02.06 Grass/Debris Catcher Tank: The grass catcher tank shall be designed with two grass easily removable grass strainer baskets located in series within the tank. The grass strainer tank shall be designed so that the strainer baskets are easy to reach for emptying on a daily basis. The tank shall also be equipped with a dual level overflow manifold assembly to prevent overflow of the tank. A separate float activated transfer pump (described in Section 1.03) shall be located inside the tank to pump water to the above ground water recovery system, when the tank has sufficient water to operate. A purge/service valve shall be located at the bottom of the tank to allow daily purging of sedimentation back to the pit as part of routine maintenance. 1.03 Above Ground Water Recovery Console Operation: Water from the grass catcher tank shall be pumped into the water recovery console via a high head sump pump at least l/3 HP in size. Water shall first pass through a cyclonic separator where sand, dirt and other heavy particles can be removed from the water prior to entering the water recovery system. The above ground water recovery system console shall provide a minimum of 4-stages (tanks) for oil separation and removal. The first two tanks shall contain oil coalescing grids to force any free-floating oil to float to the surface of the tanks. An oil bleed of valve shall be provided for the periodic removal of surface oils formed by the coalescing grids. Two other chambers shall be provided and filled with porous Cellofoam blocks which will allow the passage of water through the blocks but adsorb emulsified oils from the water prior to passing along to the next stage of the filtering process. 1.03.01 Operation--Stage 1: When the water reaches the system console, it passes through a cyclonic separator, check valve and a flow regulator. After passing through the cyclonic separator, it shall enter the bottom of the first oil coalescing tank and slowly percolates upward through a minimum of 750 square feet of oil coalescing grid plates. This slow moving process shall enhance oil water separation and cause dirt to drop to the floor of the tank. As the oily water gently flows upward, free oil droplets shall collect on the oleophilic plates and eventually rise to the surface for skimming. 1.03.02 Operation--Stage 2: After the water reaches the top of the first chamber, it shall pass through a second chamber and flow downward through an identical coalescing chamber which adds a minimum of another 750 square feet of coalescing plates--thereby doubling the effect of the first section of the tank. 1.03.02.01 Oil Coalescing Plates: The oil coalescing plates shall be 45 degree semi-sinusoidal shape, shall be sandwiched together and hung in the tank in vertical position. The plates shall be manufactured of an oleophilic material and shall be spaced approximately 1" apart to maximize both oil coalescing and water stilling characteristics inherent in the design. The minimum size of each of the first two chambers shall be approximately 18" x 36" x 72" high. The coalescing plates shall be capable of causing free floating oil to float on the surface of the water of these first two tanks where it can be removed through passive techniques thereby eliminating the need for rotating oil skimming wheels or drums. Passive oil skimming techniques shall consist of either absorption, periodic bleed-off through a manual valve or both. (As an option, periodic bleed-off of oily water may be diverted into the mud/oil hopper where the oil can be absorbed from the water using disposable oil pillows, and the water can be returned to the pit.) 1.03.03 Operation--Stage 3: Water shall next pass by gravity from the oil coalescing tanks through a level stabilizing anti-siphoning tube and into the first of two additional chambers containing Cellofoam oil adsorption filters to further scrub out oils remaining in the water stream. Each chamber shall be a minimum size of 18" x 18" x 36" high and shall be connected to each other in such a manner as to cause the maximum length of water flow through each chamber, thereby maximizing the flow time of water passage through the filters. 1.03.03.01 Oil Adsorption Filters: The oil adsorption filter blocks (item 6) shall be manufactured of an oleophilic foam with a porosity of 50 cells per cubic inch and shall be manufactured of a material which is cleanable and reusable. Therefore, the design of the foam and filter chamber shall facilitate easy removal and cleaning of the filtering foam. Cleaning shall consist of squeezing out the oil and cleaning with a pressure washer or by soaking. 1.03.03.02 Oil Absorption Filters: The oil absorption filters shall be a disposable "pillow" variety and shall be manufactured of a hollow fiber which will absorb oil only, sucking it up like a sponge, and not water and shall be capable of being disposed of when completely saturated with oil. The oil filters shall alternate in the four tanks, whereby the flow will first go through foam and then pillow, foam and then pillow. This will allow the pillow to absorb any oil, which may accumulate as a slick as a result of oily water passing through the filtering foam. 1.03.04 Final Filter. The final stage of filtration shall be to pass the water through a pleated micron filter rated at 5 or 10 micron. Minimum size shall be 75 square feet of filtering material. 1.03.05 Ozonation: A heavy-duty ozonator shall be employed to prevent odor build up and as a means of disinfecting the water. Ozone will be manufactured by an ozonator mounted on the console and shall be injected into the water stream via a venturi injector at all times. 1.04 Materials Specifications: 1.04.01 Console with Built-in Tanks: The complete console shall be constructed of reinforced fiberglass. All internal tanks shall be vertical, as opposed to horizontal tanks, standing in an upright position to minimize their footprint and shall have hopper bottoms to facilitate the easy purging of sludge from each tank using manually operated flush valves located at the bottom of the console. This will eliminate the need to take the system apart regularly to clean out the buildup of unwanted sludge. All plumbing piping, check valves, manually operated valves and other interconnections within the system shall be PVC or non-ferrous brass. 1.04.02 Electrical Panels: All wall-mounted electrical panels shall be NEMA IV construction and shall be built to UL listed specifications. Power required to operate shall be 1 phase, 60 hertz, 115 volts AC. 1.04.03 Pumps and Motors: Pump motors must be designed to the latest in NEMA standards. They are to be properly housed and protected within the system to ensure that no contaminants enter the motor to shorten life. They shall utilize the latest in Class B insulation technologies and be built for severe environmental duty applications. They shall utilize non-regreasable ball bearings to minimize maintenance and ensure contamination free bearing life. They are to be built to NEMA Standards MGl-12.53.A and be UL recognized with approval per E-46145. All steel components are to be coated with rust inhibiting undercoat and an overcoat of durable enamel. All rotors are to be coated with a rust inhibitor and the motor must use non-hygroscopic Class B or better varnish impregnated windings. The motor is to be oversized so that it will not be taxed to allow it to run cooler, draw less than nameplate amps and extend its life expectancy. The motor shall be rated to run continuously 24 hours a day, have CSA Approval and be batch tested for efficiency performance per I.E.E.E. l2A Method B. 1.04.03.01 Pumps: Pumps must be designed and built to handle the water quality being handled at each point in the system. They must also be sized to provide the proper flow and pressure demanded by each process in the system. Pumps must have proper seals and bearings and an efficient reliable proven impeller construction. All pumps shall have a ruggedly constructed high tensile strength housing suitable for the application. Pumps shall have a sealed lubrication system for the pump chamber with easy access to provide lubrication to the pump seal when necessary. 1.05 Operation and Instruction Manuals: The system shall come with an instruction manual complete with a description of operation of the system as well as all major components, with a complete parts list showing manufacturer's names and parts numbers of all major buy out components and with a complete trouble shooting guide. |
|
Western Water Products
|