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Treatment process for removing ammonia nitrogen in waste water

A treatment method and wastewater technology, applied in water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of complex equipment system, high operation requirements, high operating costs, etc. Simple maintenance, low operating cost, and less equipment

Inactive Publication Date: 2006-09-27
SHENZEN JDL ENVIRONMENTAL PROTECTION LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) The equipment system is complex and the investment is large, and it is necessary to add blow-off towers, blowers, pH meters, mixers, dosing pumps and pipeline systems, etc.
[0007] (2) The operating cost is high, and chemicals need to be added
[0008] (3) Unstable operation
[0013] (1) The equipment system is complicated and the investment is large. It is necessary to add chlorine storage tanks, chlorination machines, chlorine detectors, mixers, reactors and pipeline systems, etc.
[0014] (2) Unstable operation and high operating costs
[0015] (3) High requirements for operation

Method used

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  • Treatment process for removing ammonia nitrogen in waste water

Examples

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Effect test

Embodiment 1

[0030] The concentration of ammonia nitrogen in the wastewater is 100mg / l, and the flow rate is 1.0m 3 / h, the removal method of ammonia nitrogen in wastewater is as follows figure 1 As shown, the wastewater containing ammonia nitrogen enters a volume of 80m 3 Adjusting pool, homogenizing and buffering water quality and volume; pumped into the volume by the lift pump is 2m 3 The PH adjustment tank, add acid or alkali to react for 10 minutes, and control the pH value of the wastewater between 7.5 and 8.0; make the pH-adjusted wastewater enter a volume of 5m 3 The compound reaction pool, adding magnesium salt (Mg 2+ ) is 500mg / l, adding phosphate (PO 4 3- ) is 1000mg / l, stirring and reacting for 1 hour; the volume of the reacted waste water entering is 5m 3 Add coagulant and react for 0.5 hours in the rubber plume pond; make the waste water that passes through the rubber feather enter into a volume of 100m 3 The settling tank can effectively stay for 5 hours for sedimentat...

Embodiment 2

[0032] For breeding wastewater, the concentration of ammonia nitrogen in the wastewater is 100mg / l, adding magnesium salt (Mg 2+ ) is 380mg / l, adding phosphate (PO 4 3- ) is 630mg / l, and others are identical with embodiment one.

Embodiment 3

[0034] It is general waste water, the concentration of ammonia nitrogen in the waste water is 50mg / l, adding magnesium salt (Mg 2+ ) is 190mg / l, adding phosphate (PO 4 3- ) is 320mg / l, and others are identical with embodiment one.

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PUM

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Abstract

The invention discloses a dislodging ammonia nitrogen handling method of waste-water, which comprises the following steps: adding in magnesium salt and microcosmic salt in waster-water to carry on combination reaction with ammonia nitrogen of waste-water; generating hexahydrate magnesium ammonia phosphate colloid; dislodging hexahydrate magnesium ammonia phosphate colloid deposition. The invention can dislodge ammonia nitrogen of water-water effectively and stably, which makes the water outlet of waste-water reaches the primary standard of the national wastewater synthesis emission standard GB44 / 26-2001.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a treatment method for removing ammonia nitrogen in wastewater. Background technique [0002] In the prior art, the removal methods of ammonia nitrogen in waste water include stripping method and breakpoint chlorination method to be treated. The principles and existing defects are as follows: [0003] 1. Blow off method [0004] The principle is: adjust the pH value of the wastewater to about 11, so that the ammonia in the wastewater is saturated and escapes. This process is carried out in the stripping tower, in order to prevent ammonia (NH 3 ) pollution, the gas from the stripping tower is passed through the sulfuric acid solution to absorb ammonia. [0005] The disadvantages of the stripping method are: [0006] (1) The equipment system is complex and the investment is large. It is necessary to add blow-off towers, blowers, pH meters, mixers, dosing pumps and pipeline system...

Claims

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Application Information

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IPC IPC(8): C02F1/58C02F9/04
Inventor 廖志民黄玉和吴吉军郭景奎袁志华戴睿智史文彦邹霞赵敏慧夏晓春
Owner SHENZEN JDL ENVIRONMENTAL PROTECTION LTD