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Low-pollution water quality deep purification system

A deep purification and low pollution technology, applied in the environmental field, can solve the problems of unsatisfactory removal of nitrogen and phosphorus, and achieve the effect of uniform water distribution

Pending Publication Date: 2017-01-04
NANJING INST OF GEOGRAPHY & LIMNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing methods for treating low-pollution water only have a good effect on suspended solids and organic matter, but the removal effect on nitrogen and phosphorus is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0054] In order to achieve the effect of deep phosphorus removal, the present invention provides a phosphorus removal filler X-Phos matrix and its preparation method, X is defined as "removal", Phos represents phosphate, and CaO 2 , Attapulgite clay, adhesive and water balance are mixed and stirred in a certain proportion and pressed into cylindrical particles, which can be used as phosphorus removal fillers. Main raw material: CaO 2 Powder (CaO 2 Content 50%~60%), attapulgite clay, adhesive, water. The weight composition of the filler is: CaO2 Powder 50%~55%, natural attapulgite clay 5%~10%, modified attapulgite clay 30%~35%, adhesive 3%~6%, water 3%~6%. When the filler is finally formed, it is a cylinder with a bottom diameter of 5-50mm and a height of 5-50mm. The maximum phosphorus adsorption capacity is 200mg / g.

[0055] The adhesive is one or both of sodium silicate and polyvinyl alcohol adhesive.

[0056] In addition to the above-mentioned main raw materials, a smal...

Embodiment 1

[0069] Example 1: Laboratory static simulation experiment I

[0070] Potassium dihydrogen phosphate solution is prepared in the laboratory so that its TP is 1.2 mg / L, and a cylindrical packing with a diameter of 5 mm and a height of 10 mm is used. The preparation steps of the packing are the same as above, and the weight ratio of raw material components is: CaO 2 Powder 50%, natural attapulgite clay 8%, modified attapulgite clay 31%, sodium silicate 1%, polyvinyl alcohol adhesive 3%, water 4%, MgO 2 1%, activated carbon 1%, fly ash 1%. Take 1L of potassium dihydrogen phosphate solution, add two fillers, and take a water sample for testing after 8 hours. The results are shown in Table 1.

[0071] Table 1 Comparison of water quality

[0072] pH TP initial water quality 6.8 1.24mg / L Water quality after 8h 10.5 0.21mg / L

Embodiment 2

[0073] Embodiment 2: Laboratory static simulation experiment II

[0074] Potassium dihydrogen phosphate solution is prepared in the laboratory so that its TP is 1.2 mg / L, and a cylindrical packing with a diameter of 10 mm and a height of 20 mm is used. The preparation steps of the packing are the same as above, and the weight ratio of raw material components is: CaO 2 Powder 50%, natural attapulgite clay 6%, modified attapulgite clay 30%, activated carbon 5%, sodium silicate 1%, polyvinyl alcohol adhesive 4%, water 4%. Take 5L of potassium dihydrogen phosphate solution, add two fillers, and take a water sample for testing after 12 hours. The results are shown in Table 2.

[0075] Table 2 Water quality comparison

[0076] pH TP initial water quality 6.9 1.22mg / L Water quality after 8h 9.8 0.20mg / L

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Abstract

The invention discloses a low-pollution water quality deep purification system. The low-pollution water quality deep purification system comprises a first-stage treatment unit and a second-stage treatment unit, the second-stage treatment unit comprises an even water distributing system with a water distributing pipe set, and the water distributing pipe set comprises a first water distributing pipe with a plurality of water distributing sub-pipes, a plurality of second water distributing pipes, a plurality of first overflow vertical pipes and a plurality of second overflow vertical pipes. The water distributing sub-pipes are connected with the second water distributing pipes; the first overflow vertical pipes are identical in length and are connected with the water distributing sub-pipes in a one-to-one correspondence mode; the upper ends of the water distributing sub-pipes except for the uppermost water distributing sub-pipe are rotationally connected with the lower ends of the second overflow vertical pipes in a one-to-one correspondence mode, and the adjacent first overflow vertical pipes and second overflow vertical pipes are connected through first overflow inclined pipes. Therefore, the low-pollution water quality deep purification system has the advantages of being even in water distribution, effectively removing algae, organic matter, nitrogen and phosphorus in low-pollution water and the like.

Description

technical field [0001] The invention relates to the field of environment, in particular to a water quality deep purification system for low-pollution water bodies. Background technique [0002] In recent years, many rivers in our country have been polluted, especially many urban rivers are seriously polluted. In recent years, although the degree of pollution has been alleviated after a certain degree of treatment, the content of nutrients and carbon sources in the water is lower than the discharge standard of domestic sewage, but the existence of this type of water in the water body will also cause pollution, usually called this type of water. Sewage with low concentration is low pollution water. [0003] The existing methods for treating low-pollution water only have a good effect on suspended solids and organic matter, but the removal effect on nitrogen and phosphorus is not ideal. Contents of the invention [0004] The present invention aims to solve at least one of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F3/302C02F3/32C02F1/001C02F1/5236
Inventor 柯凡何延召李文朝
Owner NANJING INST OF GEOGRAPHY & LIMNOLOGY
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