Composite dephosphorization filter material

Abstract

The invention discloses a composite dephosphorization filter material. The composite dephosphorization filter material comprises volcanic rock with the particle size of 1-2 cm and a porous dephosphorization filter material with porosity of 45-50% and volume weight of 0.7-0.9 g / cm<3>. The porous dephosphorizing filter material comprises 71.5 wt% of fly ash, 4.5 wt% of cement, 18.9 wt% of quick limeand 5.1 wt% of gypsum. In the sewage treatment process, the dephosphorized effective component calcium ions in the filter material and phosphorus in sewage form a water-insoluble compound through chemical adsorption and precipitation reaction, and the water-insoluble compound is fixed on the filter material or is discharged and settled at the bottom of a pool along with water flow, so that the effect of removing phosphorus in sewage is achieved. Meanwhile, the filter material is porous, a large number of various microorganisms can be attached to the filter material, and various organic pollutants in sewage can be degraded.

Description

Technical field:

[0001] The invention relates to a composite dephosphorization filter material, which belongs to the field of sewage treatment. Background technique:

[0002] Relevant data show that for water pollution problems such as marine red tides and water eutrophication, the enrichment of phosphorus content is the main reason, and the removal of phosphorus in sewage is one of the most important links in the sewage treatment process. It is an important indicator of reaching the standard, and it is also a bottleneck of whether the small and medium-sized domestic sewage treatment system can meet the standard. The removal and control of phosphorus in sewage will receive more and more attention.

[0003] The traditional domestic sewage treatment process mainly adopts biological dephosphorization or chemical dephosphorization. The treatment efficiency of the former is low, and the removal rate is about 30-40%. It is easy to cause secondary pollution. Especially in small-s...

Examples

Embodiment 1

[0030] This composite dephosphorization filter material includes two components, the first one: volcanic rock, particle size: 1-2㎝; the second one: porous special dephosphorization filter material (a by-product of building aerated blocks), particle size: 1.5 -3.0cm, porosity: 40-50%, bulk density: 0.7-0.95g / cm 3 , The main components of the filter material: 71.5wt% fly ash, 4.5wt% cement, 18.9wt% quicklime, 5.1wt% gypsum; filter material production process: 200 ℃ high-temperature steam heating and inflating to form holes, and crushing into granules after forming.

Embodiment 2

[0032] Utilize the compound dephosphorization filter material of embodiment 1 to carry out dephosphorization treatment to artificial wetland, treatment place is in Dalate banner photovoltaic base, treatment system such as figure 1 As shown, the composite biological filter adopts the pulse type multi-point sewage distributor disclosed in CN201821351534.9 for water distribution, and the constructed wetland adopts the greenhouse alternately interchangeable constructed wetland disclosed in CN201821190937.X.

[0033] Main process:

[0034] 1. After the sewage is collected through the pipeline, it enters the water collection well at the end of the pipeline, and then passes through the mechanical grille to remove the floating and suspended solids from the water to protect the normal operation of the water pump.

[0035] 2. After the grid treatment, the sewage enters the septic tank for preliminary degradation, and is lifted by the filter lifting pump into the multifunctional biodegra...

Technical field:

[0001] The invention relates to a composite dephosphorization filter material, which belongs to the field of sewage treatment. Background technique:

[0002] Relevant data show that for water pollution problems such as marine red tides and water eutrophication, the enrichment of phosphorus content is the main reason, and the removal of phosphorus in sewage is one of the most important links in the sewage treatment process. It is an important indicator of reaching the standard, and it is also a bottleneck of whether the small and medium-sized domestic sewage treatment system can meet the standard. The removal and control of phosphorus in sewage will receive more and more attention.

[0003] The traditional domestic sewage treatment process mainly adopts biological dephosphorization or chemical dephosphorization. The treatment efficiency of the former is low, and the removal rate is about 30-40%. It is easy to cause secondary pollution. Especially in small-s...

Examples

Embodiment 1

[0030] This composite dephosphorization filter material includes two components, the first one: volcanic rock, particle size: 1-2㎝; the second one: porous special dephosphorization filter material (a by-product of building aerated blocks), particle size: 1.5 -3.0cm, porosity: 40-50%, bulk density: 0.7-0.95g / cm 3 , The main components of the filter material: 71.5wt% fly ash, 4.5wt% cement, 18.9wt% quicklime, 5.1wt% gypsum; filter material production process: 200 ℃ high-temperature steam heating and inflating to form holes, and crushing into granules after forming.

Embodiment 2

[0032] Utilize the compound dephosphorization filter material of embodiment 1 to carry out dephosphorization treatment to artificial wetland, treatment place is in Dalate banner photovoltaic base, treatment system such as figure 1 As shown, the composite biological filter adopts the pulse type multi-point sewage distributor disclosed in CN201821351534.9 for water distribution, and the constructed wetland adopts the greenhouse alternately interchangeable constructed wetland disclosed in CN201821190937.X.

[0033] Main process:

[0034] 1. After the sewage is collected through the pipeline, it enters the water collection well at the end of the pipeline, and then passes through the mechanical grille to remove the floating and suspended solids from the water to protect the normal operation of the water pump.

[0035] 2. After the grid treatment, the sewage enters the septic tank for preliminary degradation, and is lifted by the filter lifting pump into the multifunctional biodegra...

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