GB669188A - Improvements in lime feeding processes and apparatus for preparing and feeding the lime - Google Patents

Improvements in lime feeding processes and apparatus for preparing and feeding the lime

Info

Publication number
GB669188A
GB669188A GB2363048A GB2363048A GB669188A GB 669188 A GB669188 A GB 669188A GB 2363048 A GB2363048 A GB 2363048A GB 2363048 A GB2363048 A GB 2363048A GB 669188 A GB669188 A GB 669188A
Authority
GB
United Kingdom
Prior art keywords
lime
tank
water
feeding
settled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2363048A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB2363048A priority Critical patent/GB669188A/en
Publication of GB669188A publication Critical patent/GB669188A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/529—Processes or devices for preparing lime water
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/02—Lime
    • C04B2/04—Slaking
    • C04B2/08—Devices therefor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Paper (AREA)

Abstract

669,188. Purifying water. MOORE, R. P. Sept. 1. 1949. [Sept. 8, 1948] No. 23630/48. Class 46. Lime is prepared for feeding, e.g. to a water softening plant by mixing the lime with a body of water and allowing it to settle to the bottom of the water body to a substantially constant water-to-solid ratio and thereafter withdrawing the settled lime for feeding without material change of the water-to-solid ratio. The lime is allowed to settle for a period of from 2 to 6 hours. As shown the lime is mixed with water in a tank 2 and the resulting pulp is run as through pipe 10 into a second tank 3 preferably of conical form for settling. The settled lime is withdrawn from the tank 3 by means other than the weight of the settled lime itself, as through a discharge pipe 25 connected downstream of an orifice 31 in a closed water conduit 29, while a pipe 11 is connected to the top of the tank 3 and to a point upstream of the orifice 31 so that the lime is drawn into the conduit 20 at a constant rate depending upon the flow of water in the conduit 29. The place of the lime drawn from the tank 3 is taken by water entering at the top of the tank 3 through the pipe 11 and is measured through a meter 16 as an indication of the quantity of lime drawn from the tank 3. Only a portion of the settled lime from the tank 3 may be withdrawn during an operation and a further supply of the pulp run into tank 3 for settlement before the next operation. A discharge pipe 22 communicates with the tank 3 at a point intermediate its length to enable displacing water to be discharged. In a modification of the apparatus the water taking the place of the discharged lime from the tank 3 is supplied to the top of the tank 3 from a reservoir above the tank.
GB2363048A 1948-09-08 1948-09-08 Improvements in lime feeding processes and apparatus for preparing and feeding the lime Expired GB669188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2363048A GB669188A (en) 1948-09-08 1948-09-08 Improvements in lime feeding processes and apparatus for preparing and feeding the lime

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2363048A GB669188A (en) 1948-09-08 1948-09-08 Improvements in lime feeding processes and apparatus for preparing and feeding the lime

Publications (1)

Publication Number Publication Date
GB669188A true GB669188A (en) 1952-03-26

Family

ID=10198758

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2363048A Expired GB669188A (en) 1948-09-08 1948-09-08 Improvements in lime feeding processes and apparatus for preparing and feeding the lime

Country Status (1)

Country Link
GB (1) GB669188A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008123778A1 (en) * 2007-02-16 2008-10-16 Poju R. Stephansen As Method to prevent build-up of limestone in a lime slaker that is used for batchwise slaking of burnt lime

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008123778A1 (en) * 2007-02-16 2008-10-16 Poju R. Stephansen As Method to prevent build-up of limestone in a lime slaker that is used for batchwise slaking of burnt lime

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