Method for modifying wastewater treatment device

Patent metadata

Field	Value
Publication number	US-11299413-B2
Application number	US-202017003968-A
Country	US
Kind code	B2
Filing date	Aug 26, 2020
Priority date	Sep 30, 2019
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

A method for modifying a wastewater treatment device, the method including: 1) fixing a filling support in a wastewater pool, where the filling support includes a support frame; the support frame includes a hollow shaft, a fixed ring, and at least one vane; 2) adjusting the height of the filling support, until the fixed ring is submerged below the liquid level of the wastewater pool, where the water intake velocity of the wastewater pool is no less than 0.25 m/s, whereby a water current is produced and drives the support frame to rotate; 3) adding a functional liquid into the hollow shaft; and 4) adding an enzyme mixture to the hollow shaft when the rotation speed of the support frame is less than a first preset value, until the rotation speed of the support frame reaches a second preset value.

First claim

What is claimed is:

1. A method, comprising:
1) fixing a filling support in a wastewater pool, wherein the filling support comprises a support frame and a fixed device; the support frame comprises a hollow shaft provided with a first height adjuster; the support frame is rotatably disposed on the fixed device via the hollow shaft; the support frame further comprises a first fixed ring to which a filling is secured, a first vane disposed on the hollow shaft and below the first fixed ring, and a connection pipe connecting the first fixed ring and the hollow shaft; the first fixed ring is a hollow structure and comprises a plurality of holes; the first fixed ring communicates with the hollow shaft via the connection pipe; the first vane is configured to rotate in the presence of a water current thereby driving the support frame to rotate; the hollow shaft comprises an upper part provided with an opening through which a functional liquid is added to the hollow shaft; a plunger is movably disposed in the hollow shaft thereby pushing the functional liquid in the hollow shaft to move;
2) adjusting a height of the filling support using the first height adjuster, until the first fixed ring is submerged below a liquid level of the wastewater pool, wherein a water intake velocity of the wastewater pool is no less than 0.25 m/s, whereby the water current is produced and drives the support frame to rotate; and adjusting a number of the first vane on the hollow shaft according to a rotation speed of the support frame;
3) adding the functional liquid via the opening into the hollow shaft, and adjusting a moving speed of the plunger so that the functional liquid is completely added in a preset time; and
4) adding an enzyme mixture to the hollow shaft when a rotation speed of the support frame is less than a first preset value, until the rotation speed of the support frame reaches a second preset value.

2. The method of claim 1 , wherein the plunger is provided with a retractable seal.

3. The method of claim 2 , wherein the support frame further comprises a second fixed ring disposed below the first fixed ring, and the first fixed ring and the second fixed ring are both connected to the hollow shaft via the connection pipe; the first vane is disposed between the first fixed ring and the second fixed ring, and a second vane is disposed below the second fixed ring.

4. The method of claim 3 , wherein each of the first vane and the second vane is in the shape of a fan blade.

5. The method of claim 4 , wherein the fixed device comprises an upper mounting plate, a lower mounting plate opposite to the upper mounting plate, and a support pillar connecting to the upper mounting plate and the lower mounting plate; and the support frame is rotatably disposed between the upper mounting plate and the lower mounting plate.

6. The method of claim 5 , wherein the support pillar is provided with a second height adjuster.

7. The method of claim 1 , wherein in 2), the rotation speed of the support frame is 1-3 rpm.

8. The method of claim 1 , wherein in 3), the preset time is 12-36 hours.

9. The method of claim 1 , wherein in 4), the first preset value is 0.1 rpm, and the second preset value is 0.6-0.75 rpm.

10. The method of claim 1 , wherein the functional liquid is bacterial fermentation broth comprising Pseudomonas aeruginosa, Sinorhizobium meliloti, Ruegeria , and Xanthomonas campestris.

11. The method of claim 1 , wherein the enzyme mixture comprises tyrosine and an acylase.

Assignees

• Nanjing University Of Technology

Inventors

• Wang Jinfeng
• Ren Hongqiang
• Wu Bing

Classifications

• C02F3/109

  Characterized by the shape (C02F3/104 takes precedence) · CPC title

• C02F3/2806

  Anaerobic processes using solid supports for microorganisms · CPC title

• C02F3/10 Primary

  Packings; Fillings; Grids (packing elements in general B01J19/30, B01J19/32) · CPC title

• C02F3/341

  Consortia of bacteria · CPC title

• C02F2303/06

  Sludge reduction, e.g. by lysis · CPC title