Efficient phosphorus removal compound coagulant

A compounding and high-efficiency technology, applied in the direction of flocculation/sedimentation water/sewage treatment, special treatment targets, adsorption water/sewage treatment, etc., can solve the problems of long aging reaction time, high effluent total phosphorus, waste of energy, etc., and achieve saving Effects of energy consumption, increased stability, and cost reduction

Active Publication Date: 2016-08-31
河南永泽环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This manufacturing method has simple steps and is easy to realize industrial production, but it has the following problems: 1. The reaction needs to be carried out under elevated temperature conditions, which wastes energy; the aging reaction time is long and the efficiency is low; 3. The condensation reflux device is used, and the equipment is complicated; 4. , The use of phosphate as raw material will lead to high total phosphorus in the effluent

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  • Efficient phosphorus removal compound coagulant
  • Efficient phosphorus removal compound coagulant

Examples

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Embodiment 1

[0033] A high-efficiency phosphorus removal compound coagulant with a ring structure: the outer layer is polyaluminum chloride, the inner layer is porous diatomite, and lanthanum chloride is loaded in the diatomite pores; the weight percentage of each substance is: Polyaluminum chloride 55%, diatomaceous earth 40%, lanthanum chloride 1.5%, and the balance is water.

[0034] The polyaluminum chloride is a commercially available industrial-grade PAC solution, with an alumina content of ≥10%, a basicity of 70%-90%, and a water-insoluble content of ≤0.5%.

[0035] The SiO of diatomaceous earth 2 Content ≥ 70%, bulk density ≥ 0.5g / mL, specific surface area ≥ 40m 2 / g.

[0036] The above-mentioned high-efficiency phosphorus removal compound coagulant is prepared by the following method, including the following steps:

[0037] (1) Grind diatomaceous earth and lanthanum chloride to a particle size of 80-120nm through a nano-grinding machine;

[0038] (2) Dissolve the ground lantha...

Embodiment 2

[0042] A high-efficiency phosphorus removal compound coagulant with a ring structure: the outer layer is polyaluminum chloride, the inner layer is porous diatomite, and lanthanum chloride is loaded in the diatomite pores; the weight percentage of each substance is: Polyaluminum chloride 50%, diatomaceous earth 45%, lanthanum chloride 0.5%, and the balance is water.

[0043] The polyaluminum chloride is a commercially available industrial-grade PAC solution, with an alumina content of ≥10%, a basicity of 70%-90%, and a water-insoluble content of ≤0.5%.

[0044] The SiO of diatomaceous earth 2 Content ≥ 70%, bulk density ≥ 0.5g / mL, specific surface area ≥ 40m 2 / g.

[0045]The above-mentioned high-efficiency phosphorus removal compound coagulant is prepared by the following method, including the following steps:

[0046] (1) Grind diatomaceous earth and lanthanum chloride to a particle size of 80-120nm through a nano-grinding machine;

[0047] (2) Dissolve the ground lanthan...

Embodiment 3

[0051] A high-efficiency phosphorus removal compound coagulant with a ring structure: the outer layer is polyaluminum chloride, the inner layer is porous diatomite, and lanthanum chloride is loaded in the diatomite pores; the weight percentage of each substance is: Polyaluminum chloride 58%, diatomaceous earth 40%, lanthanum chloride 1.0%, and the balance is water.

[0052] The polyaluminum chloride is a commercially available industrial-grade PAC solution, with an alumina content of ≥10%, a basicity of 70%-90%, and a water-insoluble content of ≤0.5%.

[0053] The SiO of diatomaceous earth 2 Content ≥ 70%, bulk density ≥ 0.5g / mL, specific surface area ≥ 40m 2 / g.

[0054] The above-mentioned high-efficiency phosphorus removal compound coagulant is prepared by the following method, including the following steps:

[0055] (1) Grind diatomaceous earth and lanthanum chloride to a particle size of 80-120nm through a nano-grinding machine;

[0056] (2) Dissolve the ground lantha...

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Abstract

The invention discloses an efficient phosphorus removal compound coagulant, belonging to the technical field of water treatment. The efficient phosphorus removal compound coagulant has a circle layer structure, wherein the outer layer is prepared from poly aluminium chloride, the inner layer is prepared from porous kieselguhr, and the holes of the kieselguhr are internally loaded with lanthanum chloride. The efficient phosphorus removal compound coagulant is prepared from the following materials by weight percent: 50-60% of the poly aluminium chloride, 40-50% of the kieselguhr, 0.5-1.5% of the lanthanum chloride and the balance of water. The efficient phosphorus removal compound coagulant disclosed by the invention has the special circle layer structure, thus improving the flocculation efficiency, increasing the coagulation of the reagent by more than two times and being good in phosphorus removal effect while overcoming the disadvantages of poor phosphorus removal effect, large adding amount and the like caused by singly adding the poly aluminium chloride.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a high-efficiency phosphorus removal compound coagulant. Background technique [0002] Substandard discharge of nitrogen and phosphorus in domestic sewage and industrial wastewater is the main cause of water eutrophication, and phosphorus is the limiting factor of freshwater eutrophication. Biological phosphorus removal is the mainstream phosphorus removal process currently used, but the total phosphorus in the effluent is difficult to reach the standard ("Pollutant Discharge Standards for Urban Wastewater Treatment Plants" GB 18918-2002 TP≤0.5mg / L), therefore, my country's urban sewage treatment plants Coagulants are widely used to enhance biological phosphorus removal or tail water deep phosphorus removal to ensure that the total phosphorus in the effluent reaches the standard. [0003] According to the composition and preparation method of the coagulant, th...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/28
CPCC02F1/28C02F1/52C02F1/5236C02F1/5245C02F1/5263C02F2303/22
Inventor 邢传宏李二岗罗佳佳周明
Owner 河南永泽环境科技有限公司
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