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Removing device and removing method for ammonia nitrogen in wastewater and contaminated water body

A technology of ammonia nitrogen and water body, applied in the direction of water pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of increasing process complexity and cost, and achieve the effect of saving procedures, convenient operation and maintenance, and efficient removal

Inactive Publication Date: 2016-08-10
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method involves the treatment of the regeneration solution. Generally, it is necessary to replace the regeneration solution or add additional equipment to remove the ammonia nitrogen in the regeneration solution, which greatly increases the complexity and cost of the process.

Method used

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  • Removing device and removing method for ammonia nitrogen in wastewater and contaminated water body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Specific treatment process for ammonia nitrogen-containing wastewater or polluted water bodies

[0030] Such as figure 1 As shown, the water to be treated is pumped into the filter bed 1 by the water inlet pump 2 through the water inlet valve 3, the hydraulic retention time of the filter bed 1 is 5-40min, and the adsorption material (molecular sieve) in the filter bed 1 fully absorbs the ammonia nitrogen in the water body. After reaching the preset running time, turn off the water inlet pump 2, open the vent valve A4 and the vent valve B5, and discharge all the treated water for regeneration. During regeneration, close the vent valve A4 and the vent valve B5, and pump the regeneration liquid from the regeneration liquid storage tank 6 into the filter bed 1 by the regeneration liquid pump 7. When the filter bed 1 is filled with the regeneration liquid, close the regeneration liquid pump 7 to make the adsorption The material is fully immersed in the regeneration solution...

Embodiment 2

[0032] A device for removing ammonia nitrogen from polluted waste water and polluted water bodies, including an ammonia nitrogen adsorption unit and a regeneration unit, the ammonia nitrogen adsorption unit includes a water inlet pump 2 connected in sequence, a water inlet valve, a filter bed 1 filled with adsorption materials, a vent valve A4 and a vent valve A4. Valve B5, the regeneration unit includes a regeneration liquid return valve 8, a regeneration liquid storage tank 6 and a regeneration liquid pump 7 connected in sequence, the regeneration liquid storage tank 6 is filled with regeneration liquid, and the regeneration liquid pump 7 is also connected to the water inlet pump 2 and the water inlet valve 3 The regeneration liquid return valve 8 is also connected to the pipeline between the vent valve A4 and the vent valve B5. The adsorption material is an ion exchange resin, and the regeneration solution is a mixed solution of NaCl and hypochlorite, wherein the concentrati...

Embodiment 3

[0034] Compared with Example 2, except that the adsorption material is a mixture of modified zeolite and natural zeolite at a mass ratio of 1:1, the rest are the same.

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Abstract

The invention relates to a removing device and a removing method for ammonia nitrogen in wastewater and a contaminated water body. The removing device comprises an ammonia nitrogen adsorbing unit and a regenerating unit; the ammonia nitrogen adsorbing unit comprises a water inlet pump, a water inlet valve, a filter bed and an emptying valve group which are sequentially connected, wherein the filter bed is filled with an adsorbing material; the regenerating unit comprises a regenerated liquid reserve tank and a regenerated liquid pump which are sequentially connected, regenerated liquid is contained in the regenerated liquid reserve tank, the regenerated liquid pump is further connected with a pipeline arranged between the water inlet pump and the water inlet valve, the regenerated liquid reserve tank is further connected with the filter bed and recycles regenerated liquid which flows out of the filter bed and regenerates the adsorbing material, and a regenerated liquid reflux valve is arranged between the regenerated liquid reserve tank and the filter bed. Compared with the prior art, the removing device has the advantages of being high in sewage treatment efficiency, low in operation cost, simple in regeneration and the like.

Description

technical field [0001] The invention relates to a method for treating wastewater or restoring polluted water, in particular to a device and method for removing ammonia nitrogen in wastewater and polluted water. Background technique [0002] Ammonia nitrogen is a kind of nutrient substance. If the concentration of ammonia nitrogen in the water body is too high, it will lead to eutrophication of the water body, which will cause the microorganisms and plants in the water body, especially algae, to multiply, greatly increase the consumption of dissolved oxygen in the water body, and cause fish The species died, and the water quality became black and smelly. When the ammonia nitrogen pollution is serious, it will lead to the deterioration of the water environment and form algal blooms, which will have a negative impact on ecological balance and biodiversity. At the same time, ammonia nitrogen also increases the cost and difficulty of water treatment. The ammonia nitrogen in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/42B01J20/34C02F101/16
CPCC02F1/281B01J20/3475C02F1/283C02F1/42C02F2101/16C02F2303/16
Inventor 周振张伟杨阳程成魏川淇
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER