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Efficient ecological type sewage and sludge treating agent and preparation method thereof

A sludge treatment and ecological technology, applied in the field of high-efficiency ecological sewage and sludge treatment agent and preparation, can solve the problems of inability to apply in pollution control enterprises, long cycle time, reduced production efficiency, etc., to overcome the high amide monomer. Residual problems, usability, and productivity improvement effects

Active Publication Date: 2012-07-04
南京大百流环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, this technical document also introduces that the preparation time of the half-generation polyamide-amine needs 24 hours, and so repeatedly, the production process of the 4th generation PAMAM dendrimer needs to be repeated many times and the cycle time of each generation is too long, which seriously affects the production process and makes The production efficiency is greatly reduced, making it impossible for pollution control enterprises to apply

Method used

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  • Efficient ecological type sewage and sludge treating agent and preparation method thereof
  • Efficient ecological type sewage and sludge treating agent and preparation method thereof
  • Efficient ecological type sewage and sludge treating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: papermaking wastewater treatment

[0048] The preparation of ecological flocculant X agent: according to the weight ratio of sodium carboxymethyl cellulose: polyferric sulfate: sodium bentonite is 2: 7: 1, successively weigh 2kg sodium carboxymethyl cellulose, 7kg polyferric sulfate, 1kg Sodium bentonite and 23kg of deionized water are put into a stirred enamel reaction kettle to form a mixed solution with a concentration of 30% by weight, and dilute hydrochloric acid is added dropwise under rapid stirring at 1000 to 1500 rpm to adjust the pH value to 3.5. Raise the temperature to 40°C, react for 50 minutes, and keep warm for 30 minutes to obtain a brown-red viscous substance, which is then concentrated, dried, and pulverized to obtain the ecological flocculant X agent.

[0049] The preparation of the ecological coagulant aid Y agent: the weight ratio of starch: the second generation polyamide-amine dendrimer: sodium hydroxide: ammonium persulfate is 10:8:...

Embodiment 1-1

[0050] Example 1-1: Flocculation effect of papermaking wastewater

[0051] In a paper mill in Nanjing, its waste water comes from waste paper pulp used to make corrugated, boxboard, and coated white board paper. Because the company added cationic starch to the pulp for sizing and cationic dyes for dyeing. Due to environmental protection and emission reduction, the reuse of white water from paper machines has been increased, and the degree of water sealing is high, and the degree of water quality aging is very high. The effect of adding conventional inorganic flocculant polyaluminum ferric chloride and organic polymer polyacrylamide is not obvious, and the effect of increasing the dosage is not obvious. The comparison of the application effect of using the ecological flocculant X agent and Y agent of the present invention is as follows:

[0052] Get this paper industry waste water and add in six 1000ml glass cups respectively, press figure 1 The type and amount of the additive...

Embodiment 1-2

[0055] Embodiment 1-2: the toxicity test to the growth of living bacteria

[0056] One of the raw water samples of the above-mentioned control group, six of the treated water samples of the test group and one of the newly added pure water samples were eight water samples in total, respectively added culture medium and inoculated with live bacteria Bdellovibrio, to This simulates the toxicity of existing conventional chemical treatment agents and the flocculant X agent and coagulant aid Y agent of the present invention to the growth of live bacteria. The test conditions are as follows:

[0057] Test tools: 500ml triangular flask, 1ml straw, 10ml straw, 5ml needle tube, 10×10 plate, 150ml triangular flask, gauze, sterilizer

[0058] Test materials: 8 bottles of 250ml water samples, spirulina powder, Bdellovibrio bacteriophage, nutrient agar, sodium chloride, purified water

[0059] experiment procedure:

[0060] 1. Wrap the 5ml needle tube, 1ml straw, 10ml straw, and 5ml needl...

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Abstract

The invention relates to an efficient ecological type sewage and sludge treating agent and a preparation method thereof. A flocculant X consists of sodium carboxymethyl cellulose, polyferric sulfate and sodium bentonite with the weight ratio of 2:7:1; and a coagulant aid Y consists of starch, 2nd generation polyamide-amine, sodium hydroxide and ammonium persulfate with the weight ratio of 10:8:2:0.05. The invention overcomes the defects that the production process of multi-generation PAMAM dendritic polymer needs to be repeated many times, and the cycle time of each generation is overlong, which seriously affects the production process and greatly reduces the production efficiency, so the contamination control enterprises can not apply the multi-generation PAMAM dendritic polymer. The invention does not have the defects of high amide monomer residue in wastewater treatment by polyacrylamide and low production efficiency of the 4th generation polyamide-amine dendritic polymer, greatly increases the production efficiency, and enables the treating agent to have handleability and contamination removal and control effects.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a high-efficiency ecological sewage and sludge treatment agent suitable for waste water treatment and sludge dehydration and a preparation method. Background technique [0002] At present, the implementation of emission reduction makes sewage treatment face two arduous tasks. One is the upgrading of discharge water standards, and the other is that sludge treatment has been included in the tasks of sewage treatment. It is required that the sludge generated after sewage treatment must be reduced and treated in a harmless manner, and resource-based treatment is advocated. Sewage treatment chemicals and sludge treatment dehydrating agents have been generally used in two categories, one is inorganic polymer aluminum salts and iron salts, and the other is organic polymer polyacrylamide. [0003] The implementation of emission reduction has made enterprises increase the reuse of reclaim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56
Inventor 田宝凤李兴昌焦杨赵光勇陈龙贝陈芸
Owner 南京大百流环保科技有限公司
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