CN2496853Y

CN2496853Y - Sewage treatment apapratus

Info

Publication number: CN2496853Y
Application number: CN 01251862
Authority: CN
Inventors: 韩庆生; 韩晓芳; 王智平; 肖运辉; 王书道
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-13
Filing date: 2001-09-13
Publication date: 2002-06-26
Anticipated expiration: 2011-09-13

Abstract

The utility model provides a sewage disposal device including a fast-setting chamber, a layer precipitating chamber, a gas-floating chamber, a pump and an infall and an outfall. In the gas-floating chamber, an electrode area is provided. The electrode area is a double-pole electrolytic chamber which means multi-conductor pole boards array side by side in the electrolytic chamber. One side of the pole board is a positive pole and the other side is a cathode. The anode and the cathode of a direct current respectively connect to the first pole board and the last pole board. The electrode boards adopt arconium, titanium and iridium electrode boards with a distance of 10 to 50 mm. The utility model not only has a small volume, but also has a function of emanating oxygen and chlorine and producing a disinfectant, at the same time, the air bubble has the small diameter. Commonly , the chlorine bubble has a diameter of 10 to 30 micrometers and the oxygen bubble has a diameter of 20 to 60 micrometers, thus disposal capability is greatly improved, thereby not only reducing the power consumption and improving the efficiency, but also killing the bacterium and colibacillus in the water to avoid the water from going smell and having a discolored function to the coloured water.

Description

Sewage treatment device

Technical Field

The utility model relates to a sewage treatment device, in particular to a treatment device for catering sewage, slaughtering sewage, textile printing and dyeing and other industrial sewage by using an electro-flotation method.

Background

The treatment of sewage is a major problem in environmental protection, human health and the like, and the air floatation method has a plurality of sewage treatment devices, but because the air bubbles are large, the diameter of the air bubbles of the air containing or pressurized air floatation is generally in the range of 100-150 mu m, and the adsorption capacity to the tiny particles is weak. Therefore, a large amount of fine particles of dirt in the sewage cannot be removed. In addition, the general electro-flotation method cannot produce disinfectant, cannot kill bacteria, escherichia coli and the like in the sewage, and the sewage is still easy to smell and blacken.

The utility model aims at designing a sewage treatment device which has small volume, can produce more tiny bubbles and can produce bactericide in electrochemical reaction.

The technical scheme of the utility model is that this kind of sewage treatment plant includes fast condensing chamber, layer wadding room, air supporting room, pump and advances, outlet, and its air supporting indoor is equipped with the electrode area, and the electrode area is bipolar formula electrolysis chamber, has a plurality of conductor polar plates to arrange side by side in the electrolysis chamber promptly, and the one side of polar plate is anodal, and the another side is the negative pole, and DC power supply's positive pole and negative pole connect first polar plate and last polar plate respectively.

The electrode plates of the sewage treatment device adopt ruthenium-titanium-iridium electrode plates, and the distance between the electrode plates is 10-50 mm.

The utility model has the advantages that adopt special material's bipolar electrode, reduced the electrode spacing, not only equipment is small, has oxygen evolution, chlorine evolution function moreover, produces germicide, and the bubble diameter is little simultaneously. Since the particle diameters of suspended matter in wastewater are very small and the specific surface area is very large, the specific surface area carrying the bubbles floating up must be very large to remove them. The diameter of the bubbles of the general air-containing or pressurized air floatation is 100-150 mu mm, the adsorption capacity to the micro pollutants is weaker, the diameter of the bubbles of the bipolar type electric floatation is smaller, the diameter of the bubbles is 10-30 mu m, the diameter of the bubbles of the general hydrogen is 20-60 mu m, the specific surface area is large, the treatment capacity is greatly enhanced, the energy consumption is reduced, and the efficiency is improved. The equipment is characterized in that bacteria and colon bacillus in water can be killed, so that the water is not smelly and has a function of decoloring colored water.

Drawings

Fig. 1 is a schematic structural diagram of the present invention, and fig. 2 is a schematic plan view of an electrode plate: in the figure, 1 is a sewage tank, 2 is a submersible pump, 3 is a pressure gauge, 4 is a filter, 5 is a chemical tank, 6 is a flow meter, 7 is a quick-setting chamber, 8 is a layer flocculation chamber, 9 is an electrolysis chamber, 10 is a flotation chamber, 11 is a slag scraper, 12, 14 is a water distributor, 13 is a filter layer, 15 is a water outlet, 16 is a back flushing port, 17 is a power supply, 18 is an electrode plate, and 19 is an insulating bracket.

Detailed Description

Fig. 1 shows the structure schematic diagram of the utility model, 1 is a sewage tank, which is self-provided by users and is internally provided with stainless steel filter screen separation coarse slag to avoid pump blockage. The sewage is pumped out by the submersible pump 2, then passes through the pressure gauge 3 and the filter 4, is mixed with the medicament put in from the medicament box 5 in a pipeline and enters the quick-setting chamber 7, and pollutants in the sewage react with the medicament quickly to form small alum flocs with the size of 0.01-0.1 mm. Entering the layer-flocculation chamber, and allowing the small alum flocs to gradually form large alum flocs with a size of 0.1-0.5 mm. Only the alum blossom can be adsorbed by bubbles and float upwards to enter the electrolytic chamber. Double-electrode electro-flotation is carried out in the electrolytic chamber. The ruthenium-titanium-iridium composite electrode adopts a special electrode material, and the electrode connection adopts a double-electrode form. The electrolytic chamber has several parallel conductor plates, and the positive pole and negative pole of the DC power supply are connected to the first plate and the last plate separately. One side of each electrode plate is provided with a positive electrode, and the other side is provided with a negative electrode. HCLO and O are generated in the anode region₂The cathode region generates a large amount of H₂The electrochemically generated oxygen bubbles were 60 μm in size and hydrogen bubbles were 20 μm in size. The smaller the air bubble is, the higher the flotation capacity is. Then enters a flotation area and is scraped by a slag scraper. The slag scraper adopts an automatic slag scraper which continuously works at a low speed and a linear speed of 2-4M/min, the slag scraping plate is just level with the water surface, and the water content of slag is low. After the slag is scraped, the sewage enters a filter layer for filtering. According to the requirements of users on the quality of sewage, the sand filtration gradationcan be adopted, and the thickness of the filtration layer is 600-800mm or 450 x 900 x 400 activated carbon filter bed. The back flushing can be directly performed by back flushing with tap water, or the tap water pipe is connected with a pipeline pump for periodic back flushing, and the back flushing effluent flows into a sewage pool.

The utility model adopts the bipolar electrode design, the electrode plate adopts ruthenium-titanium-iridium electrode plate, and the distance between the electrode plates is 10-50 mm. The working parameters of high voltage and low current are adopted, which is beneficial to energy saving, such as the schematic diagram of the electrode in fig. 2. The voltage of the bipolar cell is determined by the difference between the potentials of the two adjacent electrodes and is proportional to the logarithm of the electrodes, and the current intensity is determined by the current density and the surface area of one of the outer electrodes, regardless of the number of bipolar electrodes.

Electrochemical reaction: due to the special material adopted by the electrode, the anode reaction is as follows:

at a pH>7

At pH<7

Meanwhile, HClO hypochlorous acid is generated at the anode for sterilization.

And (3) cathode reaction:

bacteria and E.coli in the water are killed by HClO.

Claims

1. A sewage treating apparatus is composed of a quick coagulating chamber, a layer flocculation chamber, an air floating chamber, a pump, a water inlet and a water outlet, and features that an electrode area in said air floating chamber is a bipolar electrolyzer, which has multiple conducting plates arranged in parallel, and has positive and negative electrodes respectively connected to the first and the last electrode plates.

2. The sewage treatment device according to claim 1, wherein the electrode plates are ruthenium-titanium-iridium electrode plates, and the distance between the electrode plates is 10-50 mm.