Micro-porous sludge water-retaining nutrient polymer and preparation method thereof

A polymer, microporous technology, applied in the direction of sewage/sludge fertilizer, fertilizer mixture, fertilizer form, etc., can solve the problems of difficult dehydration, high sludge moisture content, difficult transportation and subsequent treatment and disposal, etc. Pollution, the effect of promoting the flow of nutrients

Pending Publication Date: 2019-07-12
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sludge has a high water content and is difficult to dewater, which brings difficulties to transportation and subsequent treatment and disposal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A microporous sludge water-retaining nutrient polymer, which is composed of two parts: an inner layer of high-efficiency water-retaining humus nutrient base liquid and an outer layer of microporous sludge solidified block. Carboxymethyl cellulose and sodium carboxymethyl cellulose are grafted and copolymerized in an aqueous solution. The outer microporous sludge solidification block is 120mm long, 120mm wide, and 120mm high. The central area is reserved for a length of 70mm, a width of 70mm, and a height of 70mm. space, the inner layer of high-efficiency water-retaining humus nutrient base solution is located in the central area of ​​the outer layer of microporous sludge solidification block. Bubble holes with a diameter of 1.0 mm are distributed on the outer microporous sludge solidification block, and the holes with a diameter of 1.0 mm are mainly in the area close to the inner layer of high-efficiency water-retaining humus nutrient base liquid, and away from the inner...

Embodiment 2

[0073] A microporous sludge water-retaining nutrient polymer, which is composed of two parts: an inner layer of high-efficiency water-retaining humus nutrient base liquid and an outer layer of microporous sludge solidified block. Carboxymethyl cellulose and sodium carboxymethyl cellulose are grafted and copolymerized in an aqueous solution. The outer microporous sludge solidification block is 120mm long, 120mm wide, and 120mm high. The central area is reserved for a length of 70mm, a width of 70mm, and a height of 70mm. space, the inner layer of high-efficiency water-retaining humus nutrient base solution is located in the central area of ​​the outer layer of microporous sludge solidification block. Bubble holes with a diameter of 2.0 mm are distributed on the outer layer of microporous sludge solidification block, and the holes with a diameter of 1.25 mm are mainly in the area close to the inner layer of high-efficiency water-retaining humus nutrient base liquid, and away from...

Embodiment 3

[0098]A microporous sludge water-retaining nutrient polymer, which is composed of two parts: an inner layer of high-efficiency water-retaining humus nutrient base liquid and an outer layer of microporous sludge solidified block. Carboxymethyl cellulose and sodium carboxymethyl cellulose are grafted and copolymerized in an aqueous solution. The outer microporous sludge solidification block is 120mm long, 120mm wide, and 120mm high. The central area is reserved for a length of 70mm, a width of 70mm, and a height of 70mm. space, the inner layer of high-efficiency water-retaining humus nutrient base solution is located in the central area of ​​the outer layer of microporous sludge solidification block. Bubble holes with a diameter of 3.0 mm are distributed on the outer microporous sludge solidification block, and the holes with a diameter of 1.5 mm are mainly in the area close to the inner layer of high-efficiency water-retaining humus nutrient base liquid, and away from the inner ...

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Abstract

The invention belongs to the technical field of comprehensive utilization of solid wastes, and concretely relates to a micro-porous sludge water-retaining nutrient polymer and a preparation method thereof. The micro-porous sludge water-retaining nutrient polymer comprises an inner layer efficient water-retaining humus nutrient base solution and an outer layer micro-porous sludge solidification block. The preparation method of the micro-porous sludge water-retaining nutrient polymer comprises the following steps: 1, celluloses in wood processing residues are extracted and modified to obtain sodium carboxymethylcellulose; 2, humic acid in weathered coal is extracted and modified; 3, an efficient water-retaining humus base solution is prepared; 4, the efficient water-retaining humus nutrientbase solution is prepared; 5, the outer layer micro-porous sludge solidification block is prepared; and 6, the prepared efficient water-retaining humus nutrient base solution is poured into the curedmicro-porous sludge solidification block. Dewatered sludge, processing residues of woods such as barks and branches, weathered coal, fly ash and other materials are combined by physical and chemical processes to prepare the efficient water-retaining nutrient polymer in order to achieve the purpose of treating wastes with wastes.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of solid waste, and in particular relates to a microporous sludge water-retaining nutrient polymer and a preparation method thereof. Background technique [0002] Municipal sludge is a by-product of the sewage treatment process. Sludge treatment and disposal is an important part of water pollution prevention and control, and has become one of the key issues restricting the development of sewage treatment. However, the sludge has a high moisture content and is difficult to dewater, which brings difficulties to transportation and subsequent treatment and disposal. At the same time, the sludge is enriched with a large amount of organic matter, nitrogen, phosphorus, potassium and other nutrients, which is a very good organic fertilizer raw material. If some physical and chemical methods can be used to make use of the high water content of sludge and its difficult to completely dehyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G5/00
CPCC05F7/00C05G3/00C05F11/02
Inventor 苏冰琴张弛李永琴陶艳刘一清林昱廷
Owner TAIYUAN UNIV OF TECH
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