Water treatment filler capable of removing ammonia nitrogen and total nitrogen in wastewater synchronously

A technology for water treatment and ammonia removal, applied in the field of water treatment, can solve the problems of unsatisfactory mechanical strength and cost control, single function, etc., and achieve the effect of improving ammonia nitrogen removal performance, improving surface roughness, and facilitating rapid film hanging.

Active Publication Date: 2018-02-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing fillers or functions are relatively single. Basically, materials such as polyethylene are used to make aerobic treatment fillers to realize the function of nitrification (ammonia nitrogen removal); or the mechanic

Method used

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  • Water treatment filler capable of removing ammonia nitrogen and total nitrogen in wastewater synchronously

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the filler is divided into outer layer 1 and inner layer 2. The overall shape is cylindrical, the surface is coated with fibers 3, the overall diameter of the filler is 8mm, the height is 10mm, and the inner layer has a diameter of 4mm and a height of 10mm. The outer layer material of the filler is 64 parts of low-density polyethylene LDPE, 15 parts of nano-calcium carbonate powder, 15 parts of basalt fiber, 2 parts of coupling agent (silane coupling agent), and 3 parts of foaming agent (azodicarbonamide) , Foaming aid (urea) 1 part. The inner layer material adopts 46 parts of polybutylene butyrate (PBS), 50 parts of 400 mesh modified bamboo powder, 3 parts of coupling agent (monoalkoxy pyrophosphate), heat stabilizer (hypophosphorous acid) 1 serving.

[0028] Table 1 is the effect of this embodiment packing treatment synthetic waste water:

[0029] .

Embodiment 2

[0031] The filler is divided into outer layer and inner layer. Its overall shape is cylindrical, the surface is coated with fibers, the overall diameter of the filler is 8mm, the height is 10mm, and the diameter of the inner layer is 4mm, and the height is 10mm. The material of the jacket layer is 75 parts of low-density polyethylene LDPE, 10 parts of nano-calcium carbonate powder, 10 parts of basalt fiber, 2 parts of coupling agent (silane coupling agent), 2.5 parts of foaming agent (azodicarbonamide). Foaming agent (urea) 0.5 part. The inner layer material adopts 51 parts of polybutylene butyrate (PBS), 45 parts of 400 mesh modified bamboo powder, 3 parts of coupling agent (monoalkoxy pyrophosphate), heat stabilizer (hypophosphorous acid) 1 serving.

[0032] Table 2 is the effect of this embodiment packing treatment actual pharmaceutical waste water:

[0033] .

Embodiment 3

[0035] The filler is divided into outer layer and inner layer. Its overall shape is cylindrical, the surface is coated with fibers, the overall diameter of the filler is 8mm, the height is 10mm, and the diameter of the inner layer is 4mm, and the height is 10mm. The material of the jacket layer is 55 parts of low-density polyethylene LDPE, 17 parts of nano-calcium carbonate powder, 20 parts of basalt fiber, 2.5 parts of coupling agent (silane coupling agent), and 4.5 parts of foaming agent (azodicarbonamide). Foaming agent (urea) 1 part. The inner layer material adopts 65 parts of polybutylene butyrate (PBS), 31 parts of 400 mesh modified bamboo powder, 3 parts of coupling agent (monoalkoxy pyrophosphate), heat stabilizer (hypophosphorous acid) 1 serving.

[0036] Table 3 is the effect that this embodiment filler handles actual pig farm wastewater:

[0037] .

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Abstract

The invention discloses water treatment filler capable of removing ammonia nitrogen and total nitrogen in wastewater synchronously. The filler is of a cylindrical embedding-sleeving structure as a whole and is divided into an outer sleeving layer and an inner embedding layer. The outer sleeving layer is formed by foaming and blending outer sleeving layer materials, and the outer sleeving layer materials comprise low-density polyethylene (LDPE), basalt fiber and nano calcium carbonate powder. The inner embedding layer is blended by inner embedding layer materials, and the inner embedding layermaterials comprise polybuthylenesuccinate (PBS) and modified bamboo powder. By the adoption of the embedding-sleeving structure, the outer sleeving layer is provided with a pore structure which can allow microorganisms to gather together and a trichoid structure which extends outwards, under the aerobiotic and high-hydraulic-shearing condition, a surface turbulence environment is formed, and the inner embedding layer is in an alternating oxygen-enriched-microaerobic-anaerobic environment. The water treatment filler can synchronously remove ammonia nitrogen and total nitrogen, the running costof the filler is low, the volume load of unit nitrogen of wastewater treatment facilities can be increased in situ, and the selection contradiction of technological parameters of synchronously removing nitrogen and phosphorous in the running process of an actual technology can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and specifically relates to a water treatment filler capable of synchronously removing ammonia nitrogen and total nitrogen from wastewater. Background technique [0002] With the rapid economic development, the environmental pollution caused by industrial and agricultural wastewater is becoming more and more serious, and it is imperative to realize the complete standard treatment and discharge of wastewater. However, due to the differences in the characteristics of different types of functional flora during the treatment process, it is necessary to provide "space" or "time" distinctions to meet the above-mentioned differences in the relevant operation process. In terms of "spatial" differences, typical such as A / O, A 2 O process, by separately setting aerobic pool, anoxic pool, anaerobic pool, etc., to realize the independent growth of nitrifying bacteria (ammonia nitrogen removal) and d...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/10C02F3/30
CPCC02F3/10C02F3/107C02F3/108C02F3/109C02F3/30C02F3/34Y02W10/10
Inventor 阮贇杰许忠斌丁雪燕周凡齐皖河朱松明史明明
Owner ZHEJIANG UNIV
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