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Efficient flocculating agent and preparation method thereof

A flocculant and high-efficiency technology, applied in the polymer field, can solve the problems of insufficient phosphorus-containing compounds, unstable effect, poor phosphorus removal effect, etc. Effect

Inactive Publication Date: 2020-07-03
无锡市天嘉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The phosphorus removal agents commonly used in the market are mainly composed of a single component of polyaluminum chloride, which has a single function and mainly exists in a polymerized state rather than ions. It does not fully interact with phosphorus-containing compounds in sewage, and the phosphorus removal effect is poor and unstable. Large dosage, high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-efficiency flocculant, consisting of the following components in terms of mass percentage: 5 parts of ferric chloride, 10 parts of hydrogen peroxide, 30 parts of deionized water, 30 parts of polyferric sulfate, 4 parts of potassium ferrate, 3 parts of sodium sulfate, sulfuric acid 15 parts of ferrous iron.

[0024] The preparation method of described efficient flocculant comprises the following steps:

[0025] S1, adding the weighed polyferric sulfate into deionized water to stir and dissolve, and the stirring time is 10 minutes to obtain a polyferric sulfate solution, wherein the content of ferric sulfate in the polyferric sulfate is 23%;

[0026] S2. Add the weighed potassium ferrate to the polyferric sulfate solution to dissolve and stir for 15 minutes, and cool to room temperature to obtain a primary flocculation solution for subsequent use;

[0027] S3, rinse the reactor, close the discharge valve, add deionized water to the reactor, start stirring, then ad...

Embodiment 2

[0033] A high-efficiency flocculant, consisting of the following components according to mass percentage: 12 parts of ferric chloride, 8 parts of hydrogen peroxide, 40 parts of deionized water, 32 parts of polyferric sulfate, 3 parts of potassium ferrate, 5 parts of sodium sulfate, sulfuric acid 20 parts of ferrous iron.

[0034] The preparation method of described efficient flocculant comprises the following steps:

[0035] S1, adding the weighed polyferric sulfate into deionized water for stirring and dissolving, the stirring time is 15 minutes to obtain a polyferric sulfate solution, wherein the content of ferric sulfate in the polyferric sulfate is 24%;

[0036] S2. Add the weighed potassium ferrate to the polyferric sulfate solution to dissolve and stir for 20 minutes, and cool to room temperature to obtain the primary flocculation solution for subsequent use;

[0037] S3, rinse the reactor, close the discharge valve, add deionized water to the reactor, start stirring, t...

Embodiment 3

[0043] A high-efficiency flocculant, consisting of the following components according to mass percentage: 10 parts of ferric chloride, 10 parts of hydrogen peroxide, 35 parts of deionized water, 31 parts of polyferric sulfate, 4 parts of potassium ferrate, 3 parts of sodium sulfate, sulfuric acid 18 parts of ferrous iron.

[0044] The preparation method of described efficient flocculant comprises the following steps:

[0045] S1, adding the weighed polyferric sulfate into deionized water for stirring and dissolving, the stirring time is 12 minutes to obtain a polyferric sulfate solution, wherein the content of ferric sulfate in the polyferric sulfate is 25%;

[0046] S2. Add the weighed potassium ferrate to the polyferric sulfate solution to dissolve and stir for 18 minutes, and cool to room temperature to obtain the primary flocculation solution for subsequent use;

[0047] S3, rinse the reactor, close the discharge valve, add deionized water to the reactor, start stirring, ...

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Abstract

The invention discloses an efficient flocculating agent and a preparation method thereof. The efficient flocculating agent is prepared from following components in parts by weight: 5-12 parts of ferric trichloride, 5-10 parts of hydrogen peroxide, 30-40 parts of deionized water, 30-35 parts of polyferric sulfate, 2-4 parts of potassium ferrate, 3-5 parts of sodium sulfate and 15-20 parts of ferrous sulfate. Ferric trichloride is a covalent compound; and the flocculating agent can be combined with soluble phosphorus ions in sewage to generate insoluble compounds, has the advantages of favorablephosphorus removal and flocculation effect, high precipitation speed, large and compact sludge particles, favorable decoloring capacity and stable product performance, can remove heavy metals, and isan efficient cheap flocculating agent for treating municipal sewage and industrial wastewater. The flocculating agent is high in adaptability, wide in application range and excellent in phosphorus removal effect, a large number of hydroxide flocs is generated through hydrolysis precipitate, the specific surface area is large, the adsorption capacity is strong, colloids in sewage can be condensedtogether through adsorption and bridging, and the phosphorus removal efficiency is guaranteed.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a high-efficiency flocculant and a preparation method thereof. Background technique [0002] Phosphorus is an essential element in living organisms, and at the same time, it is the main cause of eutrophication in water bodies, which will cause the loss of the purification function of water bodies and affect the production and living environment of human beings. High phosphorus content in wastewater will cause serious pollution, so it needs to be treated before discharge to reduce the phosphorus content in wastewater. [0003] In recent years, due to the gradual improvement of water quality standards and the further control of pollutant discharge, the state has further refined the first-level standards in the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB 18918-2002) into first-level A and first-level B. Strict discharge standards will inevitably put forwa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/28
CPCC02F1/281C02F1/5236C02F2101/105C02F2101/20
Inventor 周杰超
Owner 无锡市天嘉科技有限公司