CN102515299A

CN102515299A - Method for treating sewage by utilizing fly ash

Info

Publication number: CN102515299A
Application number: CN2011103674572A
Authority: CN
Inventors: 张庆之
Original assignee: Dalian Zhaoyang Software Technology Co Ltd
Current assignee: Dalian Zhaoyang Software Technology Co Ltd
Priority date: 2011-11-18
Filing date: 2011-11-18
Publication date: 2012-06-27

Abstract

The invention relates to a sewage treatment method, in particular to a method for treating sewage in an adsorption and agglomeration combined manner by utilizing combined action of fly ash, a surfactant and a flocculant, which belongs to the field of sewage treatment. The method has the beneficial effects that according to the method, the fly ash is adopted as the main raw material for treating the sewage, so the sewage treatment cost is reduced; and the adsorption and flocculation ability of the fly ash is high, so the settlement time is shorter, little sludge exists and the effect and the efficiency of sewage treatment are further improved.

Description

A kind of flyash sewage water treatment method

Technical field

The present invention relates to a kind of sewage water treatment method, specifically relate to a kind of utilize flyash and tensio-active agent, flocculation agent acting in conjunction, absorption combines the method for disposing of sewage with condensing, and belongs to sewage treatment area.

Background technology

Along with the continuous development of industry, the usage quantity of resource is also in continuous increase.Water resources particularly, present global Freshwater resources only account for 0.75% of all water resourcess, have nearly 70% fresh water to be fixed in the ice sheet in the South Pole and Greenland, and mostly all the other are soil moisture or deep phreatic water, can not be by the human use.Only can directly be utilized by the mankind on the earth less than 1% fresh water or about 0.007% water.Thereby the recycling of conserve water resource and water resources becomes the angle that people pay close attention to.In the water resources recycling, the WWT most important thing, the recycling of its not only available realization water resources also can reduce sewage emissions simultaneously, reduces environmental pollution,

Sewage water treatment method is a lot of at present, and wherein the flyash sewage water treatment method is a method of generally using, but the flyash treatment process of generally using at present, and it exists settling velocity slow, the problem that settled sludge is more.

Summary of the invention

To achieve these goals, the objective of the invention is the above-mentioned deficiency to prior art, provide a kind of settling velocity faster, settled sludge less, cost is low, follow-up microbially decontaminate is not had the bentonite sewage water treating method of negative effect.

To achieve these goals, the present invention provides a kind of flyash sewage water treatment method, and its implementation process is: first-selection is ground into the 150-500 order with flyash; Flyash being poured in the treatment sewage, stirred 30-60 minute, will be 20% X 2073 again as surfactant concentrations; Pour in the pending sewage, stirred fast 10-20 minute, pour polyaluminum sulfate ferric-aluminum chloride again into as flocculation agent; Stirred 5 minutes, and sedimentation 5-15 minute, added the pH value regulator; Stirred 5-10 minute, pH value is adjusted to 6.6-7.5, carry out mud separation or microbiological treatment, all follow-up works of qualified discharge again; Any weight ratio is 1000:0.2 ~ 1000:0.8 in the above-mentioned flyash of sewage and input, and the consumption weight ratio of the consumption of flyash and X 2073 is 0.8:1-1.2:1, and the consumption weight ratio of flyash and flocculation agent is 1:1-4:1.

Said treatment sewage is dyeing and printing sewage and papermaking sewage.

The invention has the beneficial effects as follows: it adopts flyash as the main raw material of disposing of sewage, and the cost that reduces WWT is low, and the absorption of flyash is strong with flocculation ability, and the settling time is shorter, and mud is less, and improving provides the effect and the efficient of WWT.

Embodiment

The flyash sewage water treatment method, its implementation process is: first-selection is ground into the 150-500 order with flyash, and flyash is poured in the treatment sewage; Stirring 30-60 minute, will be 20% X 2073 again as surfactant concentrations, pour in the pending sewage; Stirred 10-20 minute fast, pour polyaluminum sulfate ferric-aluminum chloride again into, stirred 5 minutes as flocculation agent; Sedimentation 5-15 minute, add the pH value regulator, stirred 5-10 minute; PH value is adjusted to 6.6-7.5, carries out mud separation or microbiological treatment, all follow-up works of qualified discharge again; Any weight ratio is 1000:0.2 ~ 1000:0.8 in the above-mentioned flyash of sewage and input, and the consumption weight ratio of the consumption of flyash and X 2073 is 0.8:1-1.2:1, and the consumption weight ratio of flyash and flocculation agent is 1:1-4:1.

Claims

1. flyash sewage water treatment method, its implementation process is: first-selected flyash is ground into the 150-500 order, flyash is poured in the treatment sewage; Stirring 30-60 minute, will be 20% X 2073 again as surfactant concentrations, pour in the pending sewage; Stirred 10-20 minute fast, pour polyaluminum sulfate ferric-aluminum chloride again into, stirred 5 minutes as flocculation agent; Sedimentation 5-15 minute, add the pH value regulator, stirred 5-10 minute; PH value is adjusted to 6.6-7.5, carries out mud separation or microbiological treatment, all follow-up works of qualified discharge again; Any weight ratio is 1000:0.2 ~ 1000:0.8 in the above-mentioned flyash of sewage and input, and the consumption weight ratio of the consumption of flyash and X 2073 is 0.8:1-1.2:1, and the consumption weight ratio of flyash and flocculation agent is 1:1-4:1.