Composite flocculant for paper sludge dewatering
A technology of compound flocculant and papermaking sludge, applied in water/sludge/sewage treatment, sludge treatment, biological sludge treatment, etc., can solve the problem of not being able to give instructions or guidance for flocculant matching or coordination, synergistic effect Or the mechanism of synergistic effect is not clear, and it does not have the ability to remove all kinds of water in an all-round way, so as to improve the surface charge and interface activity, increase the radius, and reduce the compressibility.
A technology of compound flocculant and papermaking sludge, applied in water/sludge/sewage treatment, sludge treatment, biological sludge treatment, etc., can solve the problem of not being able to give instructions or guidance for flocculant matching or coordination, synergistic effect Or the mechanism of synergistic effect is not clear, and it does not have the ability to remove all kinds of water in an all-round way, so as to improve the surface charge and interface activity, increase the radius, and reduce the compressibility.
CN104692612BActive Publication Date: 2016-06-01HANGZHOU EXCE FILTER PRESS
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[0026] Papermaking sludge with a moisture content of 90% was selected as the test object, and the flocculant with the following weight composition was configured (see Table 1):
[0027] Table 1
[0028]
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The invention relates to a flocculant, in particular to a paper sludge dewatering composite flocculant. The flocculant provided by the invention consists of an inorganic flocculant, an organic flocculant, a biological flocculant, a surfactant, an activating agent and an agglomeration solution. According to the paper sludge dewatering composite flocculant provided by the invention, the dehydration property of the paper sludge can be improved, the activity of the paper sludge can be improved, the agglomerate property of the paper sludge can be improved, and the cost can be reduced.
Description
technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a composite flocculant for papermaking sludge treatment. Background technique [0002] The amount of sludge treated by papermaking wastewater is large, generally 5 to 10 times that of municipal sewage treatment plants of the same scale. According to the survey, the amount of sludge produced by my country's pulp and paper enterprises is more than 5 million tons every year. The sludge in the papermaking wastewater treatment system can be divided into four types: primary sludge, secondary sludge, tertiary sludge and mixed sludge. The primary sludge is composed of sieve residue and a large amount of inorganic fillers, which can form a relatively hard mud cake, which is easy to dehydrate and has a high dryness after dehydration; the secondary sludge is often called activated sludge, which is generally removed by biochemical methods. Organic pollutants in colloidal state and...
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Patent Timeline
01 Jun 2016
Publication
CN104692612B
- IPC
- C02F11/14; C02F11/02
- CPC
- C02F11/02; C02F11/14; C02F2303/06; Y02W10/20
- Inventors
- 凌伟明; 丁海明