A method for fractional extraction of fulvic acid xad resin from sludge and straw mixed compost
A technology of fractional extraction and fulvic acid, applied in the direction of organic chemistry, etc., can solve the problems of low content of fulvic acid and complex components
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Embodiment 1
[0092] In this example, the compost fulvic acid subcomponents of sludge and straw in a certain sewage treatment plant are graded and extracted, and the treated sludge of a certain sewage treatment plant is firstly selected (discharged up to the standard, and the water content, N, P, Heavy metal content, record data), and mix it with straw with a length between 3cm -5cm, including the following steps:
[0093] The preparation process of sludge and straw mixed compost is as follows:
[0094] 1) Select the sludge that meets the standard after treatment in the sewage treatment plant, and monitor the water content, N, P, heavy metal and organic matter content of the sludge; cut the plant straw so that the length of the straw is 3cm;
[0095] 2) According to the weight ratio of 1:1.5, put the sludge and straw in a commercially available composting reactor, stir and stir well, and ensure that the initial moisture content is 50-70%;
[0096] 3) In the composting stage, the mixed samp...
Embodiment 2
[0136] A method for fractional extraction of fulvic acid XAD resin in sludge and straw mixed compost, said extraction method comprising the following steps:
[0137] The preparation process of sludge and straw mixed compost is as follows:
[0138] 1) Select the sludge that meets the standard after treatment in the sewage treatment plant, and monitor the water content, N, P, heavy metal and organic matter content of the sludge; cut the plant straw so that the length of the straw is 3cm -5cm;
[0139] 2) According to the weight ratio of 1: (1-2), put the sludge and straw in a commercially available composting reactor, stir and turn evenly to ensure that the initial moisture content is 50%-70%, if the moisture content is lower than 50% %, carry out water treatment; if the water content is higher than 70%, carry out drying treatment;
[0140] 3) In the composting stage, the mixed sample after composting is obtained. The time period is 100-130 days. During the composting period, t...
Embodiment 3
[0168] A method for fractional extraction of fulvic acid XAD resin in sludge and straw mixed compost, said extraction method comprising the following steps:
[0169] The preparation process of sludge and straw mixed compost is as follows:
[0170] 1) Select the sludge that meets the standard after treatment in the sewage treatment plant, and monitor the water content of the sludge, the content of N, P, heavy metals and organic matter; cut the plant straw so that the length of the straw is 5cm;
[0171] 2) According to the weight ratio of 1:1, put the sludge and straw in a commercially available composting reactor, stir and turn evenly, and ensure that the initial moisture content is 50%-70%;
[0172] 3) In the composting stage, the mixed sample after composting is obtained. The time period is 130 days. During the composting period, the temperature of the compost is measured every 7 hours every day. Every 8 days, the sludge and straw are stirred and sampled, and their water con...
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Abstract
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