Method for preparing potassium chloride product by staged treatment of corn soaking water
Through the grading treatment of corn soaked water, including sedimentation, ultrafiltration and nanofiltration, the problem of potassium and chloride ion treatment in high-salt wastewater is solved, the preparation of high-purity potassium chloride and zero pollution emissions are achieved, and economic benefits and environmental protection are improved.
CN120348959APending Publication Date: 2025-07-22TENGZHOU JULI BIOTECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202510701970.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2025-07-22
AI Technical Summary
Technical Problem
The prior art fails to effectively treat potassium and chlorine plasma components in high-salt wastewater during corn soaking water treatment, resulting in environmental protection problems and low economic benefits.
Method used
Through the grading treatment of corn soaked water, including sedimentation, first ultrafiltration, first nanofiltration, second nanofiltration and concentration and crystallization, chloride and potassium ions are separated and enriched to prepare high-purity potassium chloride products.
Benefits of technology
It has achieved zero pollution emissions from corn soaked water, improved economic benefits, and the prepared potassium chloride products meet fertilizer grade standards and have environmental protection and economic value.
✦ Generated by Eureka AI based on patent content.
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Abstract
The invention provides a method for preparing a potassium chloride product through staged treatment of corn soaking water, and belongs to the technical field of corn soaking water treatment.The method comprises the following steps that the corn soaking water is subjected to sedimentation treatment, and supernate is obtained; carrying out first ultrafiltration on the supernate to filter out macromolecular proteins and part of water-insoluble substances, so as to obtain first ultrafiltration permeable water; the first ultrafiltration permeable water is subjected to first nanofiltration, most of protein, organic acid and a small amount of ion components are intercepted, and first nanofiltration permeable water is obtained; the first nanofiltration permeable water is collected for second nanofiltration, chlorine, potassium and other components in the feed liquid are enriched, the purity of potassium chloride is improved, and second nanofiltration permeable water and second nanofiltration concentrated liquid are obtained; concentrating and crystallizing the second nanofiltration concentrated liquid to obtain a potassium chloride crystal crude product; and dissolving the potassium chloride crystal crude product, decolorizing, evaporating and concentrating to obtain potassium chloride. According to the technical scheme provided by the invention, high-purity potassium chloride is prepared, and no wastewater is discharged.
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