A kind of treatment method for dilution, conditioning and solidification of non-standard disposal sludge

A treatment method and sludge technology, applied in sludge treatment, fixed/solidified sludge treatment, water/sludge/sewage treatment, etc., can solve difficult mixing, hinder cement hydration reaction, and reduce sludge solidification treatment Effect and other issues, to achieve the effect of improving efficiency, reducing sludge viscosity, and promoting fracture
CN105776785BInactive Publication Date: 2019-08-06TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2019-08-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a diluting and conditioning method for sludge. According to the method, sludge floc structures are damaged through oxidation; hydrophilic organic groups are damaged and transformed into free components; meanwhile the molecular weight of organic macromolecular substance in sludge can be further reduced through the oxidation of hydrogen peroxide, breakage of binding bonds among high polymer skeletons is promoted, further bound water, capillary water and cell bound water in sludge floc colloid structures are released, and sludge viscidity is effectively reduced. The method for treating sludge subjected to non-standardized treatment lies in that sludge is subjected to diluting and conditioning treatment through the method; a cement-based mixing dehydration curing agent is added for sufficient stirring; the sludge is subjected to stabilized curing after dehydration curing, thereby meeting the requirement of sanitary landfill. The invention further discloses a laboratory and an industrial preparation method of the cement-based mixing dehydration curing agent. The method is simple in technology and low in cost, expands environment restoration technological approaches of sludge open storage grounds, and has high economic, social and environment benefits.
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Description

technical field

[0001] The invention belongs to the technical field of environmental protection and relates to a treatment method for dilution, conditioning and solidification of non-standard disposal sludge. Background technique

[0002] Since the late 1990s, with the rapid development of urbanization in our country and the increasing environmental pollution, the number of urban sewage treatment plants has continued to increase, and a large amount of urban sludge has also been produced. According to statistics from the Department of Urban Construction of the Ministry of Housing and Urban-Rural Development of my country, by the end of 2013, there were 1,736 sewage treatment plants in cities across the country, with a daily treatment capacity of 124.54 million cubic meters and a total annual urban sewage treatment volume of 38.19 billion cubic meters. The treatment rate is 89.34%. Based on the fact that 65% of the waste water in the country is treated by biological methods, an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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