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A kind of anti-phase demulsification coagulant and its preparation method and application
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A reverse-phase demulsification and coagulant technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of unacceptable and good treatment effects, achieve good demulsification, increase demulsification speed, and improve demulsification Effect of speed and demulsification effect
Active Publication Date: 2017-07-14
GUANGZHOU ZHENQING ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology
Due to the particularity of the sewage composition, the agent should have special properties, and the simple use of organic polymers and inorganic coagulants cannot achieve good treatment effects, which has been proved by field practice
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Embodiment 1
[0031] A reverse-phase demulsification coagulant, prepared by the following method: stirring and dissolving polydimethyldiallyl ammonium chloride in water, adding polyaluminum chloride, polyferric chloride, poly Iron aluminum silicate, heat up to 60°C while stirring, add polyether polyol, stir and react for 130 minutes, then cool down to room temperature; the amount of each component is calculated by mass percentage: polydimethyldiallyl ammonium chloride 1%, polyaluminum chloride 0.1%, polyferric chloride 0.1%, polyaluminum ferric silicate 0.1%, water 98.2%, polyether polyol 0.5%.
Embodiment 2
[0033] A reverse-phase demulsification coagulant, prepared by the following method: stirring and dissolving polydimethyldiallyl ammonium chloride in water, adding polyaluminum chloride, polyferric chloride, poly Iron aluminum silicate, heat up to 80°C while stirring, add polyether polyol, stir and react for 120 minutes, then cool down to room temperature; the amount of each component is calculated by mass percentage: polydimethyldiallyl Ammonium chloride 20%, polyaluminum chloride 30%, polyferric chloride 20%, polyaluminum iron silicate 19.5%, water 10%, polyether polyol 0.5%.
Embodiment 3
[0035] A reverse-phase demulsification coagulant, prepared by the following method: stirring and dissolving polydimethyldiallyl ammonium chloride in water, adding polyaluminum chloride, polyferric chloride, poly Iron aluminum silicate, heat up to 100°C while stirring, add polyether polyol, stir and react for 240 minutes, then cool down to room temperature; the amount of each component is calculated by mass percentage: polydimethyldiallyl Ammonium chloride 45%, polyaluminum chloride 30%, polyferric chloride 10%, polyaluminum iron silicate 5%, water 5%, polyether polyol 5%.
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Abstract
The invention discloses an invert-demulsion coagulating agent, a preparation method of the invert-demulsion coagulating agent and application of the invert-demulsion coagulating agent. The invert-demulsion coagulating agent is prepared from the following ingredients in percentage by mass: 1 to 50 percent of poly dimethyl diallyl ammonium chloride, 0.1 to 50 percent of polyaluminium chloride, 0.1 to 30 percent of polyferric chloride, 0.1 to 30 percent of poly-aluminum ferric silicate sulfate, 1 to 98.2 percent of water and 0.5 to 5 percent of polyether polyol. The sum of the mass percentage of all ingredients is 100 percent. The invert-demulsion coagulating agent has the advantages that the poly dimethyl diallyl ammonium chloride is subjected to modified compounding, so that better demulsification, flocculation and precipitation effects can be achieved on high-pollution wastewater formed by macromolecule organic matters; the demulsification speed is accelerated; the demulsification effect is improved; the invert-demulsion coagulating agent is applicable to the treatment of various kinds of high-concentration COD (chemical oxygen demand) wastewater.
Description
technical field [0001] The invention relates to a coagulant, in particular to a reverse-phase demulsification coagulant and its preparation method and application, and belongs to the technical field of sewage treatment for environmental governance. Background technique [0002] Coagulants can be generally divided into inorganic coagulants and organic coagulants according to their chemical composition. The inorganic coagulants include inorganic coagulants and inorganic polymer coagulants; organic coagulants include synthetic organic polymer coagulants, natural organic polymer coagulants and microbial coagulants. Due to the particularity of the sewage composition, the agent should have special properties, and the simple use of organic polymers and inorganic coagulants cannot achieve good treatment effects, which has been proved by field practice. Therefore, it is necessary to develop an inverse demulsifier with a unique structure. Contents of the invention [0003] Aiming ...
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