Efficient dephosphorization agent for waste water treatment

A high-efficiency dephosphorization agent and wastewater treatment technology, which is applied in the fields of flocculation/sedimentation water/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. Influence, reduce the difficulty of processing, the effect of stable chemical properties

Active Publication Date: 2012-10-03
YIXING HEDA WATER SOLUTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The country clearly stipulates the phosphorus discharge index for urban sewage treatment, which poses a great challenge to the traditional biological treatment process; the biochemical treatment process quickly adapts to the requirements, but the effect of traditional water treatment chemicals is not obvious, and the dosage Large, high treatment costs and negative impact on water quality, so the development of a new generation of wastewater phosphorus removal chemicals has become a top priority

Method used

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  • Efficient dephosphorization agent for waste water treatment
  • Efficient dephosphorization agent for waste water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take aluminum sulfate 22.5%, iron sulfate 27.5%, sodium hypochlorite 17.5%, water 32.5%.

[0034] Add tap water to the reaction kettle according to the formula, turn on electric stirring, heat to 40°C, add solid aluminum sulfate and ferric sulfate, stir and dissolve completely, add sodium hypochlorite in several times to carry out polymerization reaction, after 4 hours of reaction, then heat up to 80°C Stable aging for 12 hours, filtered with 400-mesh polyester cloth to obtain a transparent liquid product.

Embodiment 2

[0036] Take aluminum sulfate 20%, iron sulfate 30%, sodium hypochlorite 20%, water 30%.

[0037] Add tap water to the reaction kettle according to the formula, turn on electric stirring, heat to 45°C, add solid aluminum sulfate and ferric sulfate, stir to dissolve completely, add sodium hypochlorite in several times to carry out polymerization reaction, react for 4 hours, and then heat up to 85°C Stable aging for 12 hours, filtered with 400-mesh polyester cloth to obtain a transparent liquid product. The liquid product is dried in a dryer and then crushed and sieved to obtain a solid granular high-efficiency dephosphorization agent. Dosing point during wastewater treatment: the outlet of the aeration tank; dosing method: first dilute to 20% concentration of diluent, so that the agent is evenly dispersed, fully reacted with water, stirred evenly and then added to the wastewater.

[0038] Dosage (mg / L)

Embodiment 3

[0040] Take aluminum sulfate 25%, iron sulfate 25%, sodium hypochlorite 15%, water 35%.

[0041] Add tap water to the reaction kettle according to the formula, turn on electric stirring, heat to 50°C, add solid aluminum sulfate and iron sulfate, stir and dissolve completely, add sodium hypochlorite in several times to carry out polymerization reaction, after reacting for 6 hours, then heat up to 85°C Steady aging for 8 hours, filtered with 400-mesh polyester cloth to obtain a transparent liquid product. Dosing point during wastewater treatment: the outlet of the aeration tank; dosing method: first dilute to 20% concentration of diluent, so that the agent is evenly dispersed, fully reacted with water, stirred evenly and then added to the wastewater.

[0042] Dosage (mg / L)

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PUM

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Abstract

The invention discloses an efficient dephosphorization agent for waste water treatment. The efficient dephosphorization agent is prepared from the following components in percentage by weight: 20 to 30 percent of aluminum sulfate, 20 to 30 percent of ferric sulfate, 10 to 20 percent of sodium hypochlorite and 30 to 40 percent of water. The efficient dephosphorization agent belongs to energy-saving, qualified, efficient and environment-friendly water treatment medicament; and the dephosphorization effect of the efficient dephosphorization agent is more than three times that of the conventionalwater treatment chemical, so the efficient dephosphorization agent can meet the marketing requirement.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a high-efficiency dephosphorization agent for wastewater treatment. The high-efficiency dephosphorization agent is a composite inorganic polymer water treatment chemical flocculant based on aluminum sulfate, iron sulfate and sodium hypochlorite. Background technique [0002] Phosphorus in wastewater mainly comes from industrial wastewater such as detergent, feces and phosphating. Its forms include orthophosphate, polyphosphate and organic phosphorus, of which orthophosphate and polyphosphate account for the vast majority. Interchange between inorganic phosphorus, soluble phosphorus and insoluble phosphorus, but the valence state will not change. A large amount of phosphorus-containing domestic sewage and industrial wastewater are discharged into rivers and lakes, which increases the load of nutrients in the water body, thereby causing abnormal reproduction of algae and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F11/14
Inventor 邹鹏曹正平张彪
Owner YIXING HEDA WATER SOLUTION
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