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Neutralizing alkali agent for treating phosphorus-containing wastewater and fluorine-containing wastewater and neutralization treatment method

A technology of wastewater and alkali agent, applied in the field of water treatment, can solve the problems of too much sludge, no recycling value, low content of phosphorus and fluorine elements, etc., and achieves high treatment efficiency, strong alkalinity, and increased metal chelate effect of cooperation

Pending Publication Date: 2018-07-24
KUNSHAN MINGKUAN ENVIRONMENTAL & ENERGY SAVING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The lime neutralization method is often used in the treatment of acidic phosphorus-containing and fluorine-containing wastewater. The lime neutralization method is simple, reliable, and low in treatment cost, so it is widely used at present. However, due to the extremely low water solubility of lime, it is about 0.166 at 20 degrees Celsius. % is soluble in water, so there is quite a lot of sludge produced when lime neutralizes acidic wastewater, and the content of phosphorus and fluorine elements in the sludge is low, which has no recycling value

Method used

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  • Neutralizing alkali agent for treating phosphorus-containing wastewater and fluorine-containing wastewater and neutralization treatment method

Examples

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Embodiment 1

[0015] A neutralizing alkali agent for treating phosphorus-containing wastewater and fluorine-containing wastewater in this embodiment includes the following components in parts by weight, 1 part of sodium hydroxide, 50 parts of aluminum hydroxide, 30 parts of calcium hydroxide, 1 part of additive, the additive includes the following components in parts by weight, 1 part of aluminum sulfate suspending agent, 1 part of ethylenediaminetetraacetic acid dispersing agent.

[0016] A neutralization treatment process using the neutralizing alkali agent for treating phosphorus-containing wastewater and fluorine-containing wastewater according to this embodiment comprises the following steps:

[0017] S1 collect wastewater: collect phosphorus-containing wastewater and fluorine-containing wastewater into phosphorus-containing wastewater collection tank and fluorine-containing wastewater collection tank respectively;

[0018] S2 Preparation of neutralizing alkaline agent: add the neutral...

Embodiment 2

[0022] A neutralizing alkali agent for treating phosphorus-containing wastewater and fluorine-containing wastewater in this embodiment includes the following components in parts by weight, 5 parts of sodium hydroxide, 75 parts of aluminum hydroxide, 40 parts of calcium hydroxide, 5 parts of additives. The additives include the following components in parts by weight, 1.5 parts of aluminum sulfate suspending agent and 5 parts of ethylenediaminetetraacetic acid dispersing agent.

[0023] A neutralization treatment process using the neutralizing alkali agent for treating phosphorus-containing wastewater and fluorine-containing wastewater according to this embodiment comprises the following steps:

[0024] S1 collect wastewater: collect phosphorus-containing wastewater and fluorine-containing wastewater into phosphorus-containing wastewater collection tank and fluorine-containing wastewater collection tank respectively;

[0025] S2 Preparation of neutralizing alkaline agent: add t...

Embodiment 3

[0029] A neutralizing alkali agent for treating phosphorus-containing wastewater and fluorine-containing wastewater in this embodiment comprises the following components in parts by weight, 10 parts of sodium hydroxide, 100 parts of aluminum hydroxide, 50 parts of calcium hydroxide, 10 parts of additives, the additives include the following components in parts by weight, 2 parts of aluminum sulfate suspending agent, 9 parts of ethylenediaminetetraacetic acid dispersing agent.

[0030] A neutralization treatment process using the neutralizing alkali agent for treating phosphorus-containing wastewater and fluorine-containing wastewater according to this embodiment comprises the following steps:

[0031] S1 collect wastewater: collect phosphorus-containing wastewater and fluorine-containing wastewater into phosphorus-containing wastewater collection tank and fluorine-containing wastewater collection tank respectively;

[0032] S2 Preparation of neutralizing alkali agent: Add the ...

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Abstract

The invention discloses a neutralizing alkali agent for treating phosphorus-containing wastewater and fluorine-containing wastewater and a neutralization treatment method. The neutralizing alkali agent comprises, by weight, 1 to 10 parts of sodium hydroxide, 50 to 100 parts of aluminum hydroxide, 30 to 50 parts of calcium hydroxide and 1 to 10 parts of additives. The additives comprise, by weight,1 to 2 parts of a suspending agent and 1 to 9 parts of a dispersing agent. The neutralizing alkali agent can reduce the contents of phosphorus and fluorine elements in the sludge and realizes recovery and recycling of sludge. The neutralization treatment method has simple processes and high treatment efficiency and produces high quality water.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a neutralizing alkali agent and a neutralization treatment process for treating phosphorus-containing wastewater and fluorine-containing wastewater. Background technique [0002] The lime neutralization method is often used in the treatment of acidic phosphorus-containing and fluorine-containing wastewater. The lime neutralization method is simple, reliable, and low in treatment cost, so it is widely used at present. However, due to the extremely low water solubility of lime, it is about 0.166 at 20 degrees Celsius. % is soluble in water, so the sludge produced when lime neutralizes acidic wastewater is quite a lot, and the content of phosphorus and fluorine elements in the sludge is low, which has no recycling value. In order to reduce the sludge output when treating acid wastewater and increase the content of phosphorus and fluorine in the sludge, it is necessary to pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/66C02F101/14C02F101/10
CPCC02F1/66C02F2101/14C02F2101/105
Inventor 陈时全
Owner KUNSHAN MINGKUAN ENVIRONMENTAL & ENERGY SAVING TECH CO LTD