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특허 상세정보

Water treatment system

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C02B-001/22   
미국특허분류(USC) 210/44 ; 210/45 ; 210/48 ; 210/52
출원번호 US-0702954 (1976-07-06)
발명자 / 주소
인용정보 피인용 횟수 : 13  인용 특허 : 0
초록

Chemical and aqueous components of sludge derived from lime treatments of raw water supplies are recovered by procedures involving carbonation of the sludges to effect a phase separation between magnesium and calcium components. When the magnesium content of the raw water is intolerable in the treated water, a magnesium carbonate is recovered from the liquid phase by its decarbonation, and the aqueous component of the liquid phase is recycled to recover the water values of the treated sludge. When the magnesium content of the raw water can be tolerated i...

대표
청구항

The method of recovering calcium values from an aqueous sludge product of the lime treatment of raw water and which is separated from the treated water and contains an aqueous component and an intimate mixture of precipitated calcium carbonate and precipitated magnesium hydroxide, said method comprising the steps of: A. carbonating the separated aqueous sludge product to solubilize the precipitated magnesium hydroxide of the separated sludge product in the aqueous component of the separated sludge product, thereby to provide a carbonated sludge product w...

이 특허를 인용한 특허 피인용횟수: 13

  1. Hsiung Andrew K. (Corvallis OR) Comstock Daniel L. (Corvallis OR) Hagen Robert D. (Dallas OR). Cross-flow microfiltration lime softener. USP1987064670150.
  2. Emenhiser, Thomas. Method for reducing phosphorus in a body of water. USP2004036706197.
  3. Klyosov Anatole A. ; Philippidis George P. ; Monovoukas Yiannis A.. Method of recovering minerals from papermaking sludge and sludge-derived ash. USP1999075919424.
  4. Bleakley Ian Stuart,GBX. Process for the treatment of an aqueous suspension comprising kaolin. USP1999126004467.
  5. Bleakley Ian Stuart,GBX. Process for the treatment of waste material suspensions. USP1998115830364.
  6. Ferrara Marcello (via Marco Polo ; 73 Messina ITX) Scopelliti Maria Gabriella (via Marco Polo ; 73 Messina ITX 98100 ). Process for treating industrial wastes. USP1997115683587.
  7. Ferrara Marcello,ITX ; Scopelliti Maria Gabriella,ITX. Process for treatment of industrial waste. USP1999105961837.
  8. Caires Fernandez, Luis Eduardo. Process scheme to improve divalent metal salts removal from mono ethylene glycol (MEG). USP2017109790153.
  9. Anderson Donald R. (3062 Blume Dr. Los Alamitos CA 90720). Treatment of industrial waste water. USP1980024188291.
  10. Komanowsky ; Michael ; Sinnamon ; Howard I.. Treatment of lime-sulfide tannery unhairing waste. USP1978044085044.
  11. Miyanohara ; Isao ; Miyazaki ; Hiroshi ; Kawamura ; Hideo. Treatment of sludge comprising biological aggregate. USP1978114125466.
  12. Miyanohara Isao (Shin-nanyo JPX) Miyazaki Hiroshi (Shin-nanyo JPX) Kawamura Hideo (Shin-nanyo JPX). Treatment of sludge comprising biological aggregate. USP1980054201668.
  13. Zadera Karel V. (Sunnyhill Road Dover NJ 07801). Treatment of water to remove certain ions therefrom. USP1977114059513.