Reagent for separating sludge and water from bored pile waste sludge
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A technology for drilling cast-in-place piles and waste mud, which is applied in chemical instruments and methods, water/sludge/sewage treatment, sludge treatment, etc. Separation effect, short processing time, simple processing steps
Inactive Publication Date: 2019-01-18
浙江广安建设有限公司
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However, these above-mentioned methods have the following defects to be solved urgently: 1) the proc
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Embodiment 1
[0040] Embodiment 1, a kind of bored cast-in-situ pile waste mud mud-water separation method, in every 500mL mud, by weight, the separation reagent raw material component that adopts is as shown in table 1, and this method comprises the following steps (referring to figure 1 ):
[0041] Step 1. Stir the waste mud evenly, and add quicklime, phosphogypsum, fly ash, anionic polyacrylamide, and fatty alcohol polyoxyethylene ether sodium sulfate in sequence, and mix each component evenly before proceeding to subsequent grouping. The addition of points, the addition is completed and stirred evenly to obtain a mixture;
[0042] Step 2, adding monoethanolamine to the mixture, adjusting the pH to 8-10 and stirring evenly;
[0043] Step 3, after stirring evenly, let stand for 2 hours for flocculation, perform pressure filtration and complete mud-water separation.
Embodiment 2
[0044] The difference between Example 2 and Example 1 is that, in parts by weight, the raw material components of the separation reagent are shown in Table 1.
Embodiment 3
[0045] Embodiment 3, a method for separating mud and water from waste mud of cast-in-place bored piles. In every 500mL of mud, by weight, the raw material components of the separation reagent used are shown in Table 1. The method includes the following steps:
[0046] Step 1. Stir the waste mud evenly, and add quicklime, phosphogypsum, anionic polyacrylamide and fatty alcohol polyoxyethylene ether sodium sulfate in sequence, and then add the subsequent components after stirring each component evenly. The addition is completed and stirred evenly to obtain a mixture;
[0047] Step 2, adding monoethanolamine to the mixture, adjusting the pH to 8-10 and stirring evenly;
[0048] Step 3, after stirring evenly, let stand for 2 hours for flocculation, perform pressure filtration and complete mud-water separation.
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Abstract
The invention discloses a reagent for separating sludge and water from pored pile waste sludge. In every 500mL of sludge, the reagent is prepared from the following components in parts by weight: 1.2-1.6 parts of quick lime, 0.5-0.8 part of ardealite and 0.1-0.2 part of anionic polyacrylamide. The reagent has the effects that the anionic polyacrylamide (APAM) enables sludge to settle under the effects of gravity and the like to achieve the effect of flocculating waste sludge; the waste sludge is treated with quick lime, flocculation and modification of the waste sludge can be realized, and a sterilizing effect can be achieved; when the ardealite is added into quick lime, adverse influence generated by soluble impurities in the sludge can be eliminated, and soluble phosphorus in the ardealite quickly reacts with the quick lime in an alkaline environment, so that the dehydration speed of waste sludge can be accelerated, and an excellent effect of treating waste with waste can be effectively achieved. Waste sludge treated by a flocculation mode has the characteristics of (1) simple treatment steps; (2) short treatment time; and (3) low treatment cost.
Description
technical field [0001] The invention relates to the processing technology of construction waste materials, more specifically, to a reagent for separating mud and water from waste mud of bored cast-in-place piles and a separation method thereof. Background technique [0002] With the development of the construction industry, bored pile technology has been widely used. Bored cast-in-situ piles generally use mud protection technology in the construction process. The static pressure of the mud on the groove wall and the mud skin formed by the mud on the groove wall can effectively prevent the groove and hole walls from collapsing, thereby easily meeting the requirements of piling. [0003] However, this also causes a large amount of waste mud to be produced during the construction process. There are a large amount of cuttings, clay minerals and impurities in the waste mud, which is very thick and difficult to sink naturally and cannot be discharged directly. The waste mud is st...
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