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Comprehensive wastewater purification system

A purification system and comprehensive wastewater technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve unsatisfactory treatment of cyanide-containing wastewater, incomplete air flotation separation, Sludge ratio is high, etc., to increase the removal rate of organic matter, avoid poor particle filtration effect, and improve the filtration effect

Inactive Publication Date: 2015-10-28
SUZHOU INST OF TRADE & COMMERCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing wastewater treatment methods have high energy consumption, high power consumption and iron consumption in the electrolysis method, too much sludge generated for high-concentration chromium-containing wastewater, which is not suitable, and the treatment of cyanide-containing wastewater is not ideal; chemical agents and air flotation The method uses chemical redox neutralization, and uses air flotation to separate mud and water. Because the electroplating sludge has a large proportion and the wastewater contains a variety of organic additives, the air flotation separation is not complete in actual use, and the operation and management are inconvenient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] See attached figure 1 , a comprehensive waste water purification system, including a purification tower 1, the upper side wall is provided with a waste water inlet 2, and the bottom end is provided with a fluid outlet. Structure 3, a plurality of through-holes 31 are provided on the single-layer flat structure; five layers of inclined deflectors 4 under the single-layer flat structure, the angle between the inclined deflectors and the horizontal plane is 10-15 degrees; the surface of the deflectors is provided with A grating structure 41; a porous film is provided on the surface of the grating structure; two layers of quartz sand filter screens 5 and 6 are provided under the guide plate.

[0027] It also includes an atomizer 7 and an ozone machine 8; the two nozzles 71 and 72 of the atomizer are located in the purification tower and below the diversion layer; the ozone inlet 81 connected with the ozone machine is between two layers of quartz sand filter screens.

[002...

Embodiment 2

[0032] A comprehensive wastewater purification system, similar to the main body of Embodiment 1, wherein the inclined deflector has four layers, and the bottom of the bottom deflector is provided with through holes; in the single-layer flat plate structure, the area with multiple through holes The area is 25% of the entire single-layer flat plate; the thickness of the grating structure is 3 mm, and the duty ratio is 0.5.

Embodiment 3

[0034] During the actual treatment, the wastewater enters the tower from the inlet, and flows to the deflector through the holes of the single-layer plate, and the organic matter is removed; then the wastewater is mixed with the reagent to form a metal solid, which flows through the quartz sand filter to filter the solid particles, and at the same time, the ozone Harmful substances in the water are further removed, and the wastewater treatment can be completed when the water is discharged.

[0035] Table 1 shows the content of each substance before and after the wastewater treatment. It can be seen that the device of the present invention effectively treats the wastewater into a water body that meets the discharge standard.

[0036] CN - Fe 2+ / 3+ Cr 6+ Ni 2+ Zn 2+ Cu 2+ COD before processing 102 20.1 18.6 14.3 45.3 56.3 253.1 Embodiment one none 0.03 0.01 0.01 0.01 0.01 15 Embodiment two none 0.02 0.01 0.02 0.01 ...

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Abstract

The invention discloses a comprehensive wastewater purification system which comprises a purification tower, an atomizer and an ozone machine, wherein a wastewater inlet is formed in the upper side wall of the purification tower; a slow flow layer, a flow guide layer and an adsorption layer are arranged in the purification tower in sequence from top to bottom; the slow flow layer adopts a one-layer flat plate structure and is positioned below the wastewater inlet; a plurality of through holes are formed in one end, far away from the wastewater inlet, of the one-layer flat plate structure; the flow guide layer consists of multiple layers of beveled flow guide plates; a grating structure is arranged on the surface of each flow guide plate; a porous film is arranged on the surface of each grating structure; a nozzle of the atomizer is positioned in the purification tower and below the flow guide layer; the adsorption layer consists of two layers of quartz sand filter nets; an ozone inlet connected with the ozone machine is formed between the two layers of quartz sand filter nets; and a fluid outlet is formed in the bottom end of the purification tower. The comprehensive wastewater purification system provided by the invention is capable of treating wastewater accurately and timely, so that the treated wastewater meets the discharge requirements, the environment is protected, and the benefits are brought for enterprises; and an apparatus is reasonable in composition and easy to maintain.

Description

technical field [0001] The invention relates to a waste water treatment device, in particular to a comprehensive waste water purification system for high-efficiency waste water treatment. Background technique [0002] Wastewater refers to the general term for water discharged during residents' activities and runoff rainwater. It includes domestic sewage, industrial wastewater, and other useless water such as primary rain runoff into drainage pipes and ditches. Electroplating is one of the three major polluting industries in the world today. Electroplating wastewater, especially comprehensive electroplating wastewater, has the characteristics of many types of pollutants, complex components, high toxicity and serious hazards. The main pollutants are various heavy metal ions, cyanide, waste acid and waste alkali, etc. Wastewater and waste liquid discharged from electroplating factories, such as rinsing water of plating parts, waste bath liquid, equipment cooling water and flus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08
Inventor 周曲珠
Owner SUZHOU INST OF TRADE & COMMERCE