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Municipal sewage treatment method

A municipal drainage and treatment method technology, applied in the field of water treatment, to achieve the effects of reduced turbidity, obvious treatment speed, and high removal rate

Inactive Publication Date: 2020-08-07
黄珺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the sewage cement separation process in the existing sewage treatment process, it is generally necessary to use high-power centrifugal equipment, and a large amount of chloride ions need to be set in the bactericide in the sewage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The flocculant preparation method is as follows:

[0029] Step A, take 30% silicate, 20% sulfuric acid and sodium hydroxide solution, and activate it to obtain the first solution, adjust the activated pH value to 5.0, and acidify for 15 minutes.

[0030] Step B, modify the first solution by adding fly ash, Fe 2+ and cl - Content and polyacrylamide hydrolysis, polyacrylamide hydrolysis and sodium hydroxide solution, hydrolysis reaction to obtain polyacrylamide and sodium polyacrylate copolymer, polyacrylamide hydrolysis into anionic polymer environment purification Agent, this step finally obtains metal ion solution;

[0031] Step C, the metal ion solution and the first solution are copolymerized, stirred evenly, and the ratio of the metal ion to the silicate of the first solution is 1:1;

[0032] Step D, aging to obtain the finished product.

Embodiment 2

[0034] Step A, take 30% silicate, 20% sulfuric acid and sodium hydroxide solution, and activate it to obtain the first solution, adjust the activated pH value to 5.0, and acidify for 15 minutes.

[0035] Step B, modify the first solution by adding fly ash, Fe 2+ and cl - Content and polyacrylamide hydrolysis, polyacrylamide hydrolysis and sodium hydroxide solution, hydrolysis reaction to obtain polyacrylamide and sodium polyacrylate copolymer, polyacrylamide hydrolysis into anionic polymer environment purification Agent, this step finally obtains metal ion solution;

[0036] Step C, the metal ion solution and the first solution are copolymerized, stirred evenly, and the ratio of the metal ion to the silicate of the first solution is 1:1.5;

[0037] Step D, aging to obtain the finished product.

Embodiment 3

[0039] Step A, take 30% silicate, 20% sulfuric acid and sodium hydroxide solution, and activate it to obtain the first solution, adjust the activated pH value to 5.0, and acidify for 15 minutes.

[0040] Step B, modify the first solution by adding fly ash, Fe 2+ and cl - Content and polyacrylamide hydrolysis, polyacrylamide hydrolysis and sodium hydroxide solution, hydrolysis reaction to obtain polyacrylamide and sodium polyacrylate copolymer, polyacrylamide hydrolysis into anionic polymer environment purification Agent, this step finally obtains metal ion solution;

[0041] Step C, the metal ion solution and the first solution are copolymerized, stirred evenly, and the ratio of the metal ion to the silicate of the first solution is 1:2;

[0042] Step D, aging to obtain the finished product.

[0043] After the flocculants made in the three embodiments are ready, the municipal drainage treatment is carried out, as follows:

[0044] A municipal drainage treatment method, com...

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Abstract

The invention discloses a municipal sewage treatment method. The method comprises the following steps: 1, collecting municipal sewage through a sewer line, and stirring and crushing the municipal sewage; 2, adding a flocculating agent into the municipal sewage obtained in the step 1, and carrying out uniform stirring; 3, adding H2O2 into the municipal sewage in the step 2 for a sufficient reaction; and 4, enabling drained water obtained in the step 3 to enter a mud-water separator for treatment to obtain treated sewage, wherein the sewage meets the first-grade A requirement of urban sewage discharge. A preparation method of the flocculating agent comprises the following steps: A, taking silicate with a concentration of 30%, sulfuric acid with a concentration of 20% and a sodium hydroxide solution, and carrying out activating to obtain a first solution; B, modifying the first solution, and adding Fe<2+> and Cl<->; C, copolymerizing metal ions and the first solution, and carrying out uniform stirring; and D, carrying out curing to obtain a finished product, adding the prepared flocculating agent. As the flocculating agent is used for treating the discharged water, treatment effect isgood, a treatment speed is obvious, a removal rate is high, turbidity is high, the utilization rate of water resources is improved, and the pressure on the environment is reduced.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a municipal drainage treatment method. Background technique [0002] As the scale of the city gradually increases, the amount of sewage continues to rise. Due to the large population of China and the lack of per capita fresh water resources, especially in the north, the water shortage is more obvious. Therefore, sewage treatment and reuse projects must be strengthened to achieve the strategic goal of sustainable development. The reuse of reclaimed water has been listed as the focus of the sewage industry. Improving the effect of sewage treatment and increasing the rate of sewage reuse can not only improve the environment, but also improve the utilization of water resources in my country. It is one of the important pillars for building a water-saving and energy-saving society. . 90% of the treatment process in the municipal sewage treatment plant adopts anoxic and aerobic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F11/143
CPCC02F1/56C02F1/722C02F1/76C02F9/00C02F11/143C02F2303/04
Inventor 黄珺文超
Owner 黄珺
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