Treatment method of domestic sewage

A treatment method and technology for domestic sewage, applied in water/sewage treatment, multi-stage water/sewage treatment, neutralized water/sewage treatment, etc., can solve problems such as affecting the normal growth of plants, excessive nitrogen and phosphorus elements, and high element content. , to achieve the effect of small loss, reduced COD, and high oxygen evolution potential

Active Publication Date: 2018-06-29
江西挺进环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are a lot of nitrogen, phosphorus and organic matter in domestic sewage. The content of these two elements is large, and it is naturally difficult to purify them. Therefore, if biological sewage is discharged into the environment at will, the nitrogen and phosphorus elements in the environment will exceed the standard and affect the normal growth of plants. not even growing

Method used

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Examples

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Embodiment 1

[0027] A treatment method for domestic sewage, comprising the following steps:

[0028] The industrial wastewater is treated with a grid to filter out solid substances such as stones and sand in the source water, and then the source water is passed into the first regulating tank, and the water body is sampled, and then the pH value of the water body is accurately measured with a PH meter. Add an acid-base regulator to the water according to the pH value. The acid-base regulator is 25 parts of citric acid, 2 parts of sodium hydroxide and 1 hydrochloric acid solution mixed together to form a buffer solution. Adjust the water body to a pH of 6.5, and the adjustment is completed. The water body is water body A;

[0029] Further, add 7 parts of flocculant to water, this flocculant is the polyaluminum chloride of 5 parts and the aluminum sulfate of 7 parts; Add sodium hydroxide solution to the water after the chlorine gas, and after reacting for 10 minutes, add 15 parts of quicklim...

Embodiment 2

[0033] A treatment method for domestic sewage, comprising the following steps:

[0034] The industrial wastewater is treated with a grid to filter out solid substances such as stones and sand in the source water, and then the source water is passed into the first regulating tank, and the water body is sampled, and then the pH value of the water body is accurately measured with a PH meter. Add an acid-base regulator to the water according to the pH value. The acid-base regulator is 33 parts of citric acid, 4 parts of sodium hydroxide and 3 parts of hydrochloric acid mixed together to form a buffer solution. Adjust the water body to a pH of 7.5, and the adjustment is completed. The water body is water body A;

[0035] Further, add 9 parts of flocculant to water, this flocculant is the polyaluminum chloride of 8 parts and the aluminum sulfate of 9 parts; Add sodium hydroxide solution to the water after the chlorine gas, and after reacting for 18 minutes, add 20 parts of quicklime ...

Embodiment 3

[0039] A treatment method for domestic sewage, comprising the following steps:

[0040] The industrial wastewater is treated with a grid to filter out solid substances such as stones and sand in the source water, and then the source water is passed into the first regulating tank, and the water body is sampled, and then the pH value of the water body is accurately measured with a PH meter. Add an acid-base regulator to the water according to the pH value. The acid-base regulator is 28 parts of citric acid, 3.5 parts of sodium hydroxide and 2.1 parts of hydrochloric acid solution mixed together to form a buffer solution, adjust the water body to a pH of 7.0, and the adjustment is completed The water body is water body A;

[0041] Further, add 8 parts of flocculant to water, and this flocculant is the polyaluminum chloride of 6 parts and the aluminum sulfate of 7-9; After introducing chlorine gas, add sodium hydroxide solution into the water, and after reacting for 14 minutes, a...

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Abstract

The invention discloses a treatment method of domestic sewage. The treatment method comprises the following steps of a), removing a solid substance in source water, detecting the potential of hydrogen(PH) of a water body, and then adding a PH regulator to regulate the PH to 6.5 to 7.5, so as to obtain a water body A; adding a flocculating agent into the water body A, filtering, then introducing chlorine, and afterwards, adding alkali liquor. According to the treatment method, the water body is regulated to be neutral; a hydroxide ion in the water body is prevented from prematurely reacting with the chlorine; the chlorine can be dissolved in the water body; a generated hypochlorite reacts with an ammonium ion in the water; the ammonium ion in the water body is removed; quick lime is addedinto the water; a microorganism and a germ in the water can be killed; the quick lime generates slaked lime in the water, and the slaked lime reacts with a phosphorus ion in the water, so that a phosphorus element in the water can be removed.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a treatment method for domestic sewage. Background technique [0002] There are a lot of nitrogen, phosphorus and organic matter in domestic sewage. The content of these two elements is large, and it is naturally difficult to purify them. Therefore, if biological sewage is discharged into the environment at will, the nitrogen and phosphorus elements in the environment will exceed the standard and affect the normal growth of plants. Not even growing. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides a treatment method for domestic sewage with high-efficiency removal of nitrogen and phosphorus elements. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: a treatment method for domestic sewage, comprising the following steps: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F101/30
CPCC02F1/001C02F1/46109C02F1/4672C02F1/52C02F1/66C02F9/00C02F2001/007C02F2001/46133C02F2101/16C02F2101/30
Inventor 骆秀芳
Owner 江西挺进环保科技股份有限公司
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