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SE2450064A1 - Method, reactor and arrangement for recovery of nitrogen from reject water - Google Patents

Method, reactor and arrangement for recovery of nitrogen from reject water

Info

Publication number
SE2450064A1
SE2450064A1 SE2450064A SE2450064A SE2450064A1 SE 2450064 A1 SE2450064 A1 SE 2450064A1 SE 2450064 A SE2450064 A SE 2450064A SE 2450064 A SE2450064 A SE 2450064A SE 2450064 A1 SE2450064 A1 SE 2450064A1
Authority
SE
Sweden
Prior art keywords
water
waste
struvite
arrangement
nitrogen
Prior art date
Application number
SE2450064A
Other versions
SE547739C2 (en
Inventor
Emilie Nordström
Laurence Stewart
Yariv Cohen
Original Assignee
Easymining Sweden Ab
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 Easymining Sweden Ab filed Critical Easymining Sweden Ab
Priority to SE2450064A priority Critical patent/SE547739C2/en
Priority to PCT/SE2025/050047 priority patent/WO2025159680A1/en
Publication of SE2450064A1 publication Critical patent/SE2450064A1/en
Publication of SE547739C2 publication Critical patent/SE547739C2/en

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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5254—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using magnesium compounds and phosphoric acid for removing ammonia
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/45—Phosphates containing plural metal, or metal and ammonium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/45—Phosphates containing plural metal, or metal and ammonium
    • C01B25/451—Phosphates containing plural metal, or metal and ammonium containing metal and ammonium
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/586—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Removal Of Specific Substances (AREA)
  • Physical Water Treatments (AREA)

Abstract

A method for recovering nitrogen from waste-water comprises providing (S10) of waste-water having dissolved ammonium ions. A ratio between alkalinity, expressed in equivalents per liter, and molar concentration of dissolved ammonium ions in the waste-water is at least 0.5: 1. Newberyite is added (S20) to the waste-water, which causes precipitation of struvite. The waste-water is degassed (S30) during at least a part of the precipitation of struvite. The precipitated struvite is then separated (S50) from the waste-water. A struvite precipitation reactor arrangement and a cyclic arrangement for recovering nitrogen from waste-water are also disclosed.
SE2450064A 2024-01-23 2024-01-23 Method, reactor and arrangement for recovery of nitrogen from reject water SE547739C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2450064A SE547739C2 (en) 2024-01-23 2024-01-23 Method, reactor and arrangement for recovery of nitrogen from reject water
PCT/SE2025/050047 WO2025159680A1 (en) 2024-01-23 2025-01-22 Recovery of nitrogen from reject water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2450064A SE547739C2 (en) 2024-01-23 2024-01-23 Method, reactor and arrangement for recovery of nitrogen from reject water

Publications (2)

Publication Number Publication Date
SE2450064A1 true SE2450064A1 (en) 2025-07-24
SE547739C2 SE547739C2 (en) 2025-11-18

Family

ID=96545417

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2450064A SE547739C2 (en) 2024-01-23 2024-01-23 Method, reactor and arrangement for recovery of nitrogen from reject water

Country Status (2)

Country Link
SE (1) SE547739C2 (en)
WO (1) WO2025159680A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490396A1 (en) * 1990-12-14 1992-06-17 DEUTSCHE NALCO-CHEMIE GmbH Process for recovery of ammonia from process and waste waters
WO2012038431A1 (en) * 2010-09-20 2012-03-29 Akwadok Bvba Method for purifying wastewater with ammonium removal
US20220315460A1 (en) * 2019-06-17 2022-10-06 Easymining Sweden Ab Decomposition of struvite

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490396A1 (en) * 1990-12-14 1992-06-17 DEUTSCHE NALCO-CHEMIE GmbH Process for recovery of ammonia from process and waste waters
WO2012038431A1 (en) * 2010-09-20 2012-03-29 Akwadok Bvba Method for purifying wastewater with ammonium removal
US20220315460A1 (en) * 2019-06-17 2022-10-06 Easymining Sweden Ab Decomposition of struvite

Also Published As

Publication number Publication date
WO2025159680A1 (en) 2025-07-31
SE547739C2 (en) 2025-11-18

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