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High polymer composite coagulant for treatment of oily waste water and making method thereof

A composite flocculant and wastewater treatment technology, applied in water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, chemical instruments and methods, etc., can solve complex operation management, low oil content and poor treatment effect and other problems, to achieve the effect of good treatment effect, less waste residue generation and less dosage

Inactive Publication Date: 2007-09-26
WUHAN IRON & STEEL (GROUP) CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In domestic iron and steel enterprises, due to the large amount of water and low oil content, the treatment process of oily sewage is mostly "one sinking, two leveling, and three filtering", which is relatively simple, not only poor in treatment effect, but also complicated in operation management

Method used

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  • High polymer composite coagulant for treatment of oily waste water and making method thereof
  • High polymer composite coagulant for treatment of oily waste water and making method thereof
  • High polymer composite coagulant for treatment of oily waste water and making method thereof

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Embodiment Construction

[0032] 1. Determination and preparation of the main raw materials of the polymer composite flocculant used for oily wastewater treatment of the present invention:

[0033] Main component and weight ratio of the present invention are polyaluminum chloride: polyferric sulfate: sodium silicate: polydiallyl dimethyl ammonium chloride: water=39.00: (1.90~2.10): (0.26~0.31): (1.04~1.52): (57.80~57.10); wherein polydiallyl dimethyl ammonium chloride contains 0.02% cationic polyacrylamide. Sodium silicate can also be potassium silicate, but sodium silicate is cheaper.

[0034] The optimal composition and weight ratio are polyaluminum chloride: polyferric sulfate: sodium silicate: polydiallyl dimethyl ammonium chloride: water=39.00: 1.90: 0.28: 1.52: 57.30.

[0035] The chemical name and characteristic description of the raw materials used:

[0036] PAC

[0037] English name: Polyaluminium chloride

[0038] Structural formula: [Al(OH) m Cl 6-m ] n , where m≤10, n=1~5.

[0039] ...

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Abstract

The invention discloses a high polymer composite coagulant for disposing oily wastewater and preparing method, which comprises the following steps: setting ingredient and weight ratio of high polymer composite coagulant with polymeric aluminium chloride : polymeric ferric sulfate : soluble glass : polydiene propyl dimethyl amchlor : water = 39.00:(1.90-2.10):(0.26-0.31):(1.04-1.52):(57.80-57.10); setting 0.02% basic ion polyacrylamide in polydiene propyl dimethyl amchlor; preparing finite density water solution with raw material as first step; preparing flocculant intermediate with polyaluminium chloride, polymeric ferric persulfate and sodium silicate as second step; proceeding mixed reaction with flocculating agent intermediate of the second step and polydiene propyl dimethyl amchlor of 0.02% positive ion polyacrylamide; controlling condition as temperature at 70-90 deg.c, pH value at 4-7; stirring intensity at 50-70r / min and ripening time at 6-24h.

Description

technical field [0001] The invention relates to a polymer composite flocculant for treating oily wastewater and a preparation method thereof. It is especially used as a flocculant for oily sewage in the circulating water treatment process of steel rolling enterprises. Background technique [0002] Oily sewage is a large-scale and wide-ranging pollution source, which widely exists in petrochemical, machinery, oil extraction, metallurgy and other industries. At present, the circulating water treatment process of domestic steel rolling enterprises is composed of metal pits, degreasing tanks, cyclone sedimentation tanks, secondary sedimentation tanks, filters and cooling towers (cooling pools) and other structures. Due to the requirements of the production process and the quality indicators of recycled water different from each other. Traditionally, the three-stage treatment process cooling tower-hot rolling workshop-swirl flow sedimentation tank-advection flow sedimentation t...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F101/32
Inventor 吴声彪李武杜健敏李凯张大华
Owner WUHAN IRON & STEEL (GROUP) CORP
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