[특허]Settling grid separator

VAV Technologies, Inc.

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Settling grid separator

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C02F-011/14
미국특허분류(USC)	210/096.1; 210/104; 210/112; 210/121; 210/202; 210/205; 210/298; 210/299; 210/305; 210/313; 210/522; 210/523; 210/533
출원번호	US-0063434 (2005-02-23)
등록번호	US-7276154 (2007-10-02)
발명자 / 주소	Schaefer,Alan W. Zimin,Valery D. Shtern,Vladimir N. Schaefer,Michael A.
출원인 / 주소	VAV Technologies, Inc.
인용정보	피인용 횟수 : 2 인용 특허 : 21

초록
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A settling grid separator apparatus and method of use which provides deep dehydration of high flow rate sludge in an environmentally friendly and energy efficient manner. The apparatus and method comprise and utilize an efficient mixing of the sludge with a flocculating agent or polymer solution, and sludge flow quieting techniques to reduce disturbances and promote flocculation of clustered solids. Free surface liquid rejection, a series of traps, and pressurized filtering utilize gravimetric, hydrometric, and densimetric techniques to separate liquid from suspended solids. Gravitational forces are utilized throughout the apparatus and method to promote separation of higher density solids from the lower density liquid carrier. Upon separation, solids with a minimal liquid content are controllably discharged for proper disposal or recycling.

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What is claimed is: 1. A settling grid separator for separating suspended solids within a liquid carrier comprising: a sludge-flocculating agent mixer capable of mixing a flocculating agent with an input sludge stream, said sludge stream having a plurality of solids suspended within a liquid carrier, said solids having a density greater than said liquid carrier; and a settling chamber fed by said mixed flocculating agent and said sludge stream, said settling chamber comprising a chamber having an upper and a lower portion and having a grid of traps between said upper and lower portions; and said traps comprising substantially inverted "V" or semi-circular shaped members within said settling chamber and forming a grid for water removal; and one or more of said traps having one or more trap pipes near a vertex of said inverted "V" shaped member or an apex of said inverted semi-circular member and optimally positioned and exiting externally from said settling chamber whereby said liquid carrier may escape external to said settling chamber substantially without said solids; and said chamber of said settling chamber and said traps constructed to minimize turbulence within said settling chamber whereby sedimentation or precipitation of said solids may occur toward said lower portion due to gravitational force; and a discharge chamber positioned in a sealed manner below said lower portion of said settling chamber and having one or more discharge valves capable of accumulating a cake of said solids and releasing at least a portion of said cake whereby said cake may be removed from said discharge chamber substantially without said liquid carrier and reused, recycled, or disposed of properly. 2. The settling grid separator as set forth in claim 1 further comprising: a filter chamber positioned in a sealed manner between said settling chamber and said discharge chamber, said filter chamber having one or more filters, said filters having one or more filter pipes connected with said filters and exiting from said filter chamber whereby any of said liquid which permeates said filters is drained through said one or more filter pipes substantially without said solids. 3. The settling grid separator as set forth in claim 2 whereby one or more of said filters further comprise: one or more vertical filters having one or more cavities into which said liquid permeates; and said filter pipes connected with said filters via said cavity. 4. The settling grid separator as set forth in claim 3 whereby one or more of said filters further comprise: a filter material comprised of one or more perforated plates having a plurality of dimpled holes, each of said holes having a cone in which a dome of said cake may form and not shear and further provide fine filtration of said liquid. 5. The settling grid separator as set forth in claim 3, said one or more filters further comprising: a filter material comprised of one or more rigid pore materials comprised of a polytetrafluoroethylene filled polyethylene. 6. The settling grid separator as set forth in claim 1 further comprising: a two stage flocculating agent mixing system, said mixing system comprising one or more flocculating agent pre-mixers capable of mixing a flocculating agent concentrate with a water or liquid from a water or liquid source; and a flocculating agent storage tank connected with a flocculating agent pump, said flocculating agent pump connected with said pre-mixers and capable of pumping said flocculating agent concentrate from said flocculating agent storage tank to said pre-mixers; and a liquid pump connected with said pre-mixers and said water or liquid source and capable of pumping said water or liquid to said pre-mixers; and a mix pump capable of pumping said flocculating agent concentrate mixed with said water or other liquids within said pre-mixer into a flocculating agent mix holding tank. 7. The settling grid separator as set forth in claim 6, said pre-mixer further comprising: one or more rotating discs interleaved between two or more stationary discs whereby turbulence is created via boundary layer adhesion and said flocculating agent concentrate is mixed with said water or liquid. 8. The settling grid separator as set forth in claim 7, said pre-mixer further comprising: a container having a cover; and one or more inlet pipes external to and connected with said container and into which said flocculating agent and said water or other liquids enter said pre-mixer; and a shaft pipe nonrotationally coupled with said inlet pipe, said shaft pipe attached with said one or more rotating discs and capable of rotating within said container; and and a pre-mixer outlet pipe coupled with said a mix pump. 9. The settling grid separator as set forth in claim 6, said pre-mixer further comprising: one or more rotating cylinders within one or more stationary cylinders whereby turbulence is created via boundary layer adhesion and said flocculating agent concentrate is mixed with said water or liquid. 10. The settling grid separator as set forth in claim 1 further comprising: a reaction chamber connected between said sludge-flocculating agent mixer and said settling chamber, said reaction chamber capable of providing further mixing and quieting of said flocculating agent with said input sludge fed into said settling chamber. 11. The settling grid separator as set forth in claim 10, said reaction chamber further comprising: an inlet pipe connected with said sludge-flocculating agent mixer; and a distributor providing a mixing of a flow from said inlet pipe of said flocculating agent with said input sludge; and a lower divergent upward flow laminator and an upper laminator capable of providing said quieting of said flow of said flocculating agent with said input sludge; and a weir over which said flow of said flocculating agent with said input sludge is substantially fed into said settling chamber. 12. The settling grid separator as set forth in claim 1, said one or more discharge valves further comprising: a top vane layer positioned above a bottom vane layer to form a cavity between said vane layers; and each of said vane layers capable of functioning independently, whereby a portion of said cake is discharged into said cavity when said top vane layer opens and thereafter closes and said portion of cake within said cavity exits said discharge chamber when said bottom vane layer opens. 13. The settling grid separator as set forth in claim 12, said vane layers further comprising: one or more rotating vanes each having a stub shaft whereby rotation of each of said stub shafts rotates said one or more rotating vanes. 14. The settling grid separator as set forth in claim 13 further comprising: one or more hydraulic actuators connected with one or more actuating bars; and one or more connecting rods connected with said actuating bar; and one or more arms affixed with said connecting rods and affixed to each of said stub shafts whereby motion of said one or more hydraulic actuators imparts said rotation of said one or more rotating vanes. 15. The settling grid separator as set forth in claim 13 further comprising: one or more valve sprockets and one or more valve chains on each of said stub shafts whereby an actuation torque is provided via said chain by a motor or actuator to one or more of said vanes. 16. The settling grid separator as set forth in claim 12, said vane layers further comprising: one or more layers of sliding slats. 17. The settling grid separator as set forth in claim 1, said one or more discharge valves further comprising: an auger having a common shaft; and a taper within said discharge chamber which meets and conforms to said auger, whereby when said common shaft is rotated said auger rotates and discharges said cake through an exiting port. 18. The settling grid separator as set forth in claim 17, said auger further comprising: a screw having an increasing pitch of one or more flights toward said exiting port whereby said cake is evenly removed. 19. The settling grid separator as set forth in claim 18 further comprising: a filtering part coupled with said exiting port and having said auger embedded within, said filtering part substantially comprised of a perforated pipe; and said flights of said screw progressively decreasing within said filtering part. 20. The settling grid separator as set forth in claim 1 further comprising: a conveyor chamber having a conveyor positioned to accept a discharge of said cake removed from said discharge chamber and transport said cake. 21. The settling grid separator as set forth in claim 20 whereby: said conveyor is perforated whereby any remaining liquid may drain from said cake. 22. The settling grid separator as set forth in claim 1 further comprising: a trash box connected with said sludge-flocculating agent mixer and capable of accepting said input sludge stream and removing one or more larger debris within the sludge stream. 23. The settling grid separator as set forth in claim 22, said trash box further comprising: a strainer having one or more strainer rods through which said sludge stream flows; and a dump tray pivotably mounted upon an axle shaft whereby when said dump tray is pivoted open said larger debris may be disposed from said trash box. 24. The settling grid separator as set forth in claim 1 further comprising: a metering pump connected with said sludge-flocculating agent mixer and a flocculating agent storage tank whereby said flocculating agent may be pumped from said storage tank to said mixer; and a volume flow and density sensor positioned to monitor the solids density of the sludge stream and cause said metering pump to inject the proper amount of flocculating agent into said sludge-flocculating agent mixer. 25. The settling grid separator as set forth in claim 24, said volume flow and density sensor further comprising: a float; and an indicator slidably mounted with said float; and a sealed body having a balancing load within and connected with said indicator whereby a first level of said float relative to a fixed point correlates to a volume flow and a second level of said indicator relative to said float correlates to an input sludge density. 26. The settling grid separator as set forth in claim 1 whereby: said inverted "V" shaped members have an arched top. 27. The settling grid separator as set forth in claim 1, said one or more traps comprising: one or more trap valves integrally connected with said one or more trap pipes; and one or more control nozzles below said one or more trap pipes and monitored via optical, electrostatic, ultrasonic, electromagnetic, or mechanical methods, said control nozzles indicating when a solid-liquid level has risen sufficiently when substantial solids begin exiting said control nozzle in order to close or restrict said trap valve manually, hydraulically, pneumatically or electrically and limit further liquid discharge from one or more of said traps. 28. The settling grid separator as set forth in claim 1 further comprising: tilted plates forming said traps; and convergent channels positioned to settle sludge in said settling chamber; and said one or more discharge valves comprised of one or more splitters and one or more control discs.

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Settling grid separator

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이 특허에 인용된 특허 (21)

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