Sewage purification agent and preparation process thereof
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A technology of sewage purifier and steel slag, which is applied in adsorption water/sewage treatment, flocculation/sedimentation water/sewage treatment, and solid waste removal, etc. low cost effect
Inactive Publication Date: 2010-11-24
ZUNHUA LITUO ENVIRONMENTAL PROTECTION SCI & TECH
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[0003] The present invention aims to solve the problem of high-cost operation of existing sewage purification, and provides a new type of sewage purification agent with industrial waste steel slag as the main raw material and its preparation process
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[0024] The present invention is described in detail below in conjunction with embodiment.
[0025] The preparation technology of sewage purification agent described in the present embodiment, carries out as follows:
[0026] g. Steel slag hydrolysis:
[0027] After removing impurities, crushing and removing iron, the steel slag is sprayed with 5% water according to the weight ratio of the steel slag, and hydrolyzed for 72 hours. After reaching a stable structure, it can enter the next process;
[0028] h. Steel slag drying:
[0029] The stable structural steel slag obtained in step a is dried at a drying temperature of 60°C;
[0030] i. Steel slag grinding and screening:
[0031] The dried steel slag obtained in step b is ground by a jet mill and then automatically classified and screened into the steel slag batching silo;
[0032] j. Grinding and screening of polyferric sulfate:
[0033] Polyferric sulfate is ground by jet mill and then automatically graded and screened ...
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Abstract
The invention relates to a sewage purification agent, in particular to a sewage purification agent for treating sewage containing phenol, heavy metal, suspended matters, radioactive substances and other contaminations and a preparation process thereof. The sewage purification agent is prepared from the following materials by weight percent; 85-95% of steel slag and 5-15% of polymeric ferric sulfate, wherein the finished agent is in the form of particles, the particle size of the steel slag is no bigger than 80 meshes, and the particle size of the polymeric ferric sulfate is no bigger than 100 meshes. The preparation process comprises the following steps: hydrolyzing the steel slag, drying, stoving, pulverizing, screening, pulverizing the polymeric ferric sulfate, screening, proportioning and compounding. The invention not only provides a new method for treating metallurgical wastes, but also creates a new process for producing the sewage purification agent. The sewage purification agent has multiple functions of adsorption, flocculation, filtration and decoloration, is especially applicable to treatment and purification of sewage containing phenol, heavy metal, suspended matters, radioactive substances and other contaminations, and has the advantages of simple production process, sufficient material resources and low production cost.
Description
technical field [0001] The invention relates to a sewage purifying agent, in particular to a sewage purifying agent for treating polluting sewage containing phenol, heavy metals, suspended solids, radioactive substances and the like and a preparation process thereof. Background technique [0002] At present, there are two main methods of sewage treatment: one is physical and chemical method, that is, coagulation method; the other is biochemical method. Physicochemical method has a good effect on removing chroma and heavy metals; biochemical method has a good removal effect on organic pollutants, nitrogen and phosphorus. Most of the sewage purifiers commonly used in the physicochemical method are chemical products, and the materials are generally relatively expensive, resulting in high operating costs for sewage treatment plants. High-efficiency, cheap, adaptable to the existing sewage treatment process, but also has multiple functions of adsorption, flocculation and filtrat...
Claims
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