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Joint treatment method for various types of sewage

A technology of combined treatment and wastewater treatment system, which is applied in the field of joint treatment of different types of wastewater, can solve problems such as troublesome wastewater treatment, pollute the environment, and odor, and achieve improved solubility, non-toxic price, and avoid odor Effect

Inactive Publication Date: 2014-05-28
ANHUI TIANYI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production process of the factory, different types of wastewater will be produced, which will cause great trouble to the treatment of wastewater. For example, a factory that produces acidified oil and epoxy plasticizer will produce acidified oil during the production process Wastewater containing high concentrations of sodium sulfate, and in the production process of epoxy plasticizers, will produce a certain concentration of formic acid, sulfuric acid and other acid-containing wastewater, if these two kinds of wastewater are mixed together for treatment, then too high Sulfate radicals will produce excessive hydrogen sulfide waste gas in acidic wastewater, and hydrogen sulfide is a toxic gas with a foul smell that pollutes the environment

Method used

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Examples

Experimental program
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Embodiment 1

[0013] This embodiment is a method for combined treatment of wastewater, comprising the following steps:

[0014] (1) In the factory producing acidified oil and epoxy plasticizer, discharge the wastewater containing formic acid and hydrogen peroxide from the epoxy plasticizer workshop into the wastewater treatment tank;

[0015] (2) Add 1 ton of calcium hydroxide to every 100 tons of acid-containing wastewater and mix well to completely neutralize the acid in the wastewater;

[0016] (3) Discharge the sulfate-containing wastewater from the acidified oil workshop into the neutralized acid-containing wastewater in the above step (2), mix well, and filter with a waste residue filter press to remove the waste residue and obtain pretreated wastewater ;

[0017] (4) Discharge the pretreated wastewater in the above step (4) into the biochemical sewage treatment system for further treatment.

Embodiment 2

[0019] Another waste water combined treatment method of the present embodiment comprises the following steps:

[0020] (1) In the factory producing acidified oil and epoxy plasticizer, discharge the wastewater containing formic acid and sulfuric acid from the epoxy plasticizer workshop into the wastewater treatment tank;

[0021] (2) Add 5 tons of calcium hydroxide to every 100 tons of acid-containing wastewater and mix well so that the acid in the wastewater is completely neutralized;

[0022] (3) Discharge the sulfate-containing waste water from the acidified oil workshop into the waste water treatment tank for the neutralized acid-containing waste water in the above step (2), mix well, and press filter with a waste residue filter press to remove the waste residue, Obtain pre-treated wastewater;

[0023] (4) Discharge the pretreated wastewater in the above step (4) into the biochemical sewage treatment system for further treatment.

Embodiment 3

[0025] Another waste water combined treatment method of the present embodiment comprises the following steps:

[0026] (1) In the factory producing acidified oil and epoxy plasticizer, discharge the wastewater containing hydrochloric acid and sulfuric acid from the epoxy plasticizer workshop into the wastewater treatment tank;

[0027] (2) Add 2.5 tons of calcium hydroxide to every 100 tons of acid-containing wastewater, and mix well, so that the acid in the wastewater is completely neutralized;

[0028] (3) Discharge the sulfate-containing waste water from the acidified oil workshop into the waste water treatment tank for the neutralized acid-containing waste water in the above step (2), mix well, and press filter with a waste residue filter press to remove the waste residue, Obtain pre-treated wastewater;

[0029] (4) Discharge the pretreated wastewater in the above step (4) into the biochemical sewage treatment system for further treatment.

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Abstract

The invention discloses a joint treatment method for various types of sewage. Through utilizing the double characters of calcium hydroxide, the method comprises the following steps: firstly, calcium hydroxide is added to neutralize acid in acidiferous sewage; secondly, the neutralized acidiferous sewage is mixed with sewage containing sulfate radicals; thirdly, the mixed sewage is filtered and waste residues in the mixed sewage are removed, pretreated sewage is obtained and discharged into a sewage treatment system, and the aim of removing sulfate radicals and acidic materials at the same time is achieved. The invention has the benefits that the method is low in cost and nontoxic; the defect that the sewage treatment system in the prior art is incapable of treating the two types of sewage at the same time is solved; the method belongs to the pretreatment method of sewage treatment system.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a combined treatment method of different types of wastewater. Background technique [0002] In the production process of the factory, different types of wastewater will be produced, which will cause great trouble to the treatment of wastewater. For example, a factory that produces acidified oil and epoxy plasticizer will produce acidified oil during the production of acidified oil. Wastewater containing high concentrations of sodium sulfate, and in the production process of epoxy plasticizers, will produce a certain concentration of formic acid, sulfuric acid and other acid-containing wastewater, if these two kinds of wastewater are mixed together for treatment, then too high Sulfate radicals in acidic wastewater will produce excessively high hydrogen sulfide waste gas, and hydrogen sulfide is a toxic gas with a foul smell that pollutes the environment. Therefore, it is necessary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
Inventor 骆浩敏赵忠维张保林刘晓东
Owner ANHUI TIANYI ENVIRONMENTAL PROTECTION TECH
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