City domestic sewage purifier and preparation method thereof

A technology of urban domestic sewage and purifiers, applied in chemical instruments and methods, separation methods, water/sewage treatment, etc., can solve problems such as complex operation, high treatment cost, and unsatisfactory treatment efficiency, and achieve increased specific surface area, Efficient purification effect, improvement of treatment efficiency and treatment cost

Active Publication Date: 2019-08-20
龙能城市运营管理股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the current problems of high cost, complicated operation and unsatisfactory treatment efficiency in urban sewage treatment, the present invention provides a low-cost, simple to manufacture and convenient to use urban sewage purifier and a preparation method thereof

Method used

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  • City domestic sewage purifier and preparation method thereof
  • City domestic sewage purifier and preparation method thereof
  • City domestic sewage purifier and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] A purifying agent for urban domestic sewage, comprising the following components and parts by weight: 80 parts of modified diatomite, 30 parts of activated carbon, 30 parts of silicon dioxide powder, 10 parts of sodium aluminate, 10 parts of fly ash, flocculation 10 parts of agent and 5 parts of synergist.

[0026] The modified diatomite is prepared by the following method: (1) Add diatomite to 0.1mol / l hydrochloric acid according to the solid-to-liquid ratio of 1:10, stir and heat at 85°C for 12h, use Washed with deionized water for 3 times, then placed in a muffle furnace and calcined at 250°C for 3 hours, cooled to room temperature and crushed to 100 mesh to obtain pretreated diatomite; (2) chitosan, pretreated diatomite Add it into 2% acetic acid solution according to the weight ratio of 2:1 and stir evenly. The amount of acetic acid added is twice the mass of the mixed solids, and the stirring time is 4 hours. Finally, use 1mol / l sodium hydroxide solution to adjust...

Embodiment 2

[0038] A purifying agent for urban domestic sewage, comprising the following components and parts by weight: 100 parts of modified diatomite, 40 parts of activated carbon, 40 parts of silica powder, 15 parts of sodium aluminate, 10 parts of fly ash, flocculation 10 parts of agent and 5 parts of synergist.

[0039]The modified diatomite is prepared by the following method: (1) Add diatomite to 0.1mol / l hydrochloric acid according to the solid-to-liquid ratio of 1:10, stir and heat at 85°C for 12h, use Washed with deionized water for 4 times, then placed in a muffle furnace and calcined at 250°C for 3h, cooled to room temperature and crushed to 100 mesh to obtain pretreated diatomite; (2) chitosan, pretreated diatomite Add it into 2% acetic acid solution according to the weight ratio of 2:1 and stir evenly. The amount of acetic acid added is twice the mass of the mixed solids, and the stirring time is 4 hours. Finally, use 1mol / l sodium hydroxide solution to adjust the pH of the...

Embodiment 3

[0052] A purifying agent for urban domestic sewage, comprising the following components and parts by weight: 120 parts of modified diatomite, 50 parts of activated carbon, 50 parts of silicon dioxide powder, 20 parts of sodium aluminate, 20 parts of fly ash, flocculation 20 parts of agent, 10 parts of synergist.

[0053] The modified diatomite is prepared by the following method: (1) Add diatomite to 0.1mol / l hydrochloric acid according to the solid-to-liquid ratio of 1:10, stir and heat at 85°C for 12h, use Washed with deionized water for 5 times, then placed in a muffle furnace and calcined at 250°C for 3h, cooled to room temperature and crushed to 100 mesh to obtain pretreated diatomite; (2) chitosan, pretreated diatomite Add it into 2% acetic acid solution according to the weight ratio of 2:1 and stir evenly. The amount of acetic acid added is twice the mass of the mixed solids, and the stirring time is 4 hours. Finally, use 1mol / l sodium hydroxide solution to adjust the p...

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Abstract

The invention discloses a city domestic sewage purifier and a preparation method thereof, and belongs to the technical field of environment protection. The purifier comprises following components in parts by weight: 80 to 120 parts of modified diatomite, 30 to 50 parts of active carbon, 30 to 50 parts of silica powder, 10 to 20 parts of sodium aluminate, 10 to 20 parts of fly ash, 10 to 20 parts of a flocculating agent, and 5 to 10 parts of a synergist. The provided purifier is different from a conventional purifier, and has a two-layer structure. The outer layer is a hydrophilic and oleophylic silica layer, which has a good effect of adsorbing and removing oil and purifying water. The inner layer is a core layer, which is mainly made of active substances such as diatomite. The purifier isspherical particles, and is convenient to use. The processing speed is quick. During the processing process, no toxic or harmful substance is generated. The purifier is green and pollution-free. Thecity sewage processing efficiency is effectively improved. The processing cost is reduced. The application potential is good.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an urban domestic sewage purifying agent and its preparation method and application. Background technique [0002] Urban sewage is a general term for sewage discharged into urban sewage systems. Urban sewage mainly includes domestic sewage and industrial sewage, collected by the urban drainage pipe network and transported to sewage treatment plants for treatment. Municipal sewage, industrial wastewater and urban runoff sewage are confluenced to form urban sewage. If urban sewage is discharged into surface water bodies without treatment, rivers and lakes will be polluted. With the rapid development of cities in our country, the phenomenon of environmental pollution is becoming more and more serious in the rapid development, and sewage treatment occupies an important part of urban environmental construction. At present, the method of sewage treatment in cities h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/28C02F1/40C02F1/52C02F1/56C02F101/20
CPCC02F1/00C02F1/5236C02F1/281C02F1/283C02F1/5263C02F1/56C02F1/40C02F2101/20
Inventor 王雪松杨秋云
Owner 龙能城市运营管理股份有限公司
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