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Urban river sludge treatment method

A technology of river silt and treatment method, which is applied in sludge treatment, fixed/solidified sludge treatment, water/sludge/sewage treatment, etc., to achieve the effect of enhancing strength, improving properties and increasing strength

Active Publication Date: 2020-08-21
广州粤水建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the defects in the urban river sludge treatment process in the prior art

Method used

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Experimental program
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Effect test

Embodiment 1

[0035] Embodiment 1, a kind of urban river silt treatment method

[0036] S1 collects the silt in the river channel and puts it in a storage tank, removes impurities from the silt, concentrates it and stirs it to obtain mud;

[0037] S2 adds hydroxypropyl methylcellulose to the mud obtained in step S1, the addition of said hydroxypropyl methylcellulose is 2% of the total weight of the mud, and stirs for 35min to obtain mud I;

[0038] S3 evenly sprays the phosphoric acid solution on the surface of the mud I obtained in step S2, the liquid-solid ratio of the phosphoric acid solution and the mud is 0.8ml:1g, and the concentration of the phosphoric acid solution is a phosphoric acid aqueous solution with a volume concentration of 20%, and then adding Potassium permanganate, the solid-to-liquid ratio of described potassium permanganate and phosphoric acid solution is 1g:6ml, leaves standstill 30min, gets mud II;

[0039] S4 adds hydroxyethylethylenediamine to the mud II obtained ...

Embodiment 2

[0041] Embodiment 2, a kind of urban river silt treatment method

[0042] S1 collects the silt in the river channel and puts it in a storage tank, removes impurities from the silt, concentrates it and stirs it to obtain mud;

[0043] S2 adds hydroxypropyl methylcellulose to the mud obtained in step S1, the addition of said hydroxypropyl methylcellulose is 3% of the total weight of the mud, and stirs for 30min to obtain mud I;

[0044] S3 uniformly sprays the phosphoric acid solution on the surface of the mud I obtained in step S2, the liquid-solid ratio of the phosphoric acid solution and the mud is 0.8ml:1g, and the concentration of the phosphoric acid solution is a phosphoric acid aqueous solution with a volume concentration of 30%, and then adding Potassium permanganate, the solid-to-liquid ratio of described potassium permanganate and phosphoric acid solution is 1g:6ml, leaves standstill 25min, gets mud II;

[0045] S4 adds hydroxyethylethylenediamine to the mud II obtain...

Embodiment 3

[0047] Embodiment 3, a kind of urban river silt treatment method

[0048] S1 collects the silt in the river channel and puts it in a storage tank, removes impurities from the silt, concentrates it and stirs it to obtain mud;

[0049] S2 adds hydroxypropyl methylcellulose to the mud obtained in step S1, the addition of said hydroxypropyl methylcellulose is 4% of the total weight of the mud, and stirs for 25min to obtain mud I;

[0050] S3 uniformly sprays phosphoric acid solution on the mud I surface that step S2 obtains, and the liquid-solid ratio of described phosphoric acid solution and mud is 0.8ml:1g, and the concentration volume concentration of described phosphoric acid solution is the phosphoric acid aqueous solution of 30%, then adds high Potassium manganate, the solid-to-liquid ratio of described potassium permanganate and phosphoric acid solution is 1g:6ml, leaves standstill 20min, gets mud II;

[0051] S4 adds hydroxyethylethylenediamine to the mud II obtained in s...

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Abstract

The invention belongs to the technical field of sludge treatment, and particularly relates to an urban river sludge treatment method. The urban river sludge treatment method provided by the inventioncomprises the following steps: firstly adding hydroxypropyl methyl cellulose to treat slurry, then adding phosphoric acid and potassium permanganate, then adding hydroxyethyl ethylenediamine, and finally adding a self-made curing agent for treatment. The sludge treated by the urban river sludge treatment method provided by the invention has the advantages of low water content, high compressive strength and low organic matter content and heavy metal content. Meanwhile, the treatment method can greatly reduce turbidity, absorbance, suspended solid content and particle size of the sludge filtrate, and can effectively improve the water quality of the sludge filtrate, reduce environmental pollution, and achieve the effect of environmental protection.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a treatment method for urban river sludge. Background technique [0002] With the rapid development of society, the problem of environmental pollution is becoming more and more serious, and urban sewage treatment projects have also been developed accordingly, and the total amount of by-product sludge in the sewage treatment process is also increasing rapidly. With the development of various enterprises in the city, the silt composition of urban rivers is very complex. It not only contains rich organic matter, N, P, K and other micronutrient elements necessary for plant growth, but also contains refractory organic matter and heavy metals. , pathogenic microorganisms and parasite eggs. The long-term deposition of these silts in urban rivers can easily cause more serious secondary pollution to the environment. [0003] Traditional river dredging is to use mech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/143C02F11/147C02F11/00C02F101/20C02F101/32C02F101/38
CPCC02F11/143C02F11/147C02F11/008C02F2103/007C02F2101/20C02F2101/32C02F2101/38
Inventor 黄楚楷叶樟丽黄方利黄润发黄一桂黄武钦许海娥
Owner 广州粤水建设有限公司
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