Methods of the purification and use of moderately saline water

A technology for salt water and water purification, applied in chemical instruments and methods, separation methods, energy and wastewater treatment, etc.

Inactive Publication Date: 2008-09-03
杰拉尔德·J·格罗特
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Methods of the purification and use of moderately saline water
  • Methods of the purification and use of moderately saline water
  • Methods of the purification and use of moderately saline water

Examples

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Embodiment 1

[0068] The irrigation drainage from Red Rock Ranch in the Westsides Resource Conservation District was obtained from the California Department of Water Resources, which has the following characteristics. Note that "ND" in the examples means "not detected" at the analytical sensitivity used (calcium: 5 mg / L, sodium: 10 mg / L).

[0069] Water samples received:

[0070]

[0071] The received effluent was softened by passing the effluent water through a Lewatit C-249 strong acid cationic resin saturated with sodium from Sybron Chemicals (a branch of Bayer Chemicals). Analysis of demineralized water has the following characteristics.

[0072] Softened water sample:

[0073]

[0074] Chabazite resin is obtained from GSA in natural form and is said to be mainly in the sodium form. The chabazite column about 39 inches high was first washed with water with a TDS of less than 70 ppm to remove fines and dirt. The chabazite column is then converted to the ammonium form by flowing a 15% amm...

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Abstract

The invention relates to purifying unwanted moderately saline water. The methods of the present invention including passing moderately saline water through an ion exchange media saturated with ammonium salts to produce fertilizer water. In addition, the present invention relates to a method of passing moderately saline water through a dual bed cation and anion exchange process for producing purified water. The first cation exchange media is saturated with acids of hydrochloric, nitric or sulfuric acids. Meanwhile, the second ion exchange media is saturated with ammonium hydroxide. Passing the moderately saline water through the first ion exchange media creates an acid rich water which is then passed through the second ion exchange media to remove chloride, sulfate, nitrate, and nitrite anions. Through a regenerative cycle, a fertilizer water is produced which is rich in ammonium chloride, ammonium nitrate or ammonium sulfate.

Description

Technical field [0001] The present invention relates to a purification method of water containing dissolved salts. In addition, the present invention relates to the use of effluents produced from the water purification of moderately salty water and extremely salty water. Background technique [0002] The demand for additional domestic and industrial water is increasing, especially for aquaculture, horticulture and agricultural planting. Ironically, the demand for the disposal of saline wastewater is also increasing. For example, in order to sell irrigation water to San Diego, 50,000 acres of irrigated fields in Imperial Valley have been abandoned. Thousands of acres of agricultural land in the San Joaquin Valley have been abandoned, and tens of thousands of acres are planned to be abandoned due to lack of water. As groundwater sources are contaminated by salty wastewater from industry and agriculture, water supply is reduced. In California’s San Joaquin Valley, irrigated agricult...

Claims

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Application Information

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IPC IPC(8): B01J49/00B01D15/00C02F1/42
CPCY02W10/37
Inventor 杰拉尔德·J·格罗特
Owner 杰拉尔德·J·格罗特
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