JP2006061896A - Auxiliary system for sewage treating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auxiliary system for a sewage treating apparatus which is versatilely applicable to various kinds of sewage, keeps a stable treatment capacity for various pollutants, has low facility cost and low maintenance cost, and does not need a large space. <P>SOLUTION: The auxiliary system for the sewage treating apparatus has a liquid clarifying treatment means which performs clarifying treatment using microorganism carrier chips where bacteria live and a liquid clarifying treatment means which performs clarifying treatment using chemicals and ceramics, that is, the auxiliary system for the sewage treating apparatus is constituted of microorganism treatment and of chemical treatment using the chemicals and the ceramics, and the system decomposes or extinguishes proteins, fat, carbohydrates, heavy metals or the like being main factors of contaminants contained in the sewage. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

Technology field

  The present invention relates to an auxiliary system for a sewage treatment facility for treating a sewer or industrial sewage or the like, that is, removing a contaminant dissolved or suspended in water.

Background technology

The pollutants contained in the sewage vary depending on the emission source, but the types of substances to be removed are metals, especially heavy metals, inorganic substances, organic substances, other SS (floating solids), etc., and the pH and BOD of the discharged water (Biochemical oxygen demand), COD (chemical oxygen demand), SS (floating solid matter or suspended solid quantity), N-HEX, TP, and TN are regulated. Conventionally, methods for removing contaminants in water are generally soluble components by oxidative decomposition by microorganisms (bacteria) using activated sludge method, or by neutralization, oxidation, reduction reaction, etc. using chemicals. Is made insoluble, and is separated by agglomeration and precipitation.
JP 2001-047094 A JP 2002-316187 A

  However, among the above methods, the method using microorganisms is most popular. However, since processing takes time, a large processing tank must be provided, and thus a large space is required. Further, the method using chemicals may cause secondary pollution when the amount of chemicals used is increased. Furthermore, it is difficult to separate and remove insolubilized ammonium ions, phosphate ions and organic substances, and it is difficult to maintain a stable function against fluctuations in the type and concentration of contaminants, temperature and load. Therefore, the equipment specifications differ for each emission source, and design and production corresponding to each of the emission sources are required, resulting in expensive equipment, and a large maintenance cost.

  The present invention has been made under the circumstances described above, and the object of the present invention can be applied universally to a wide variety of sewage, maintain a stable treatment capacity for various pollutants, and The object is to provide an auxiliary system for sewage treatment facilities that has low equipment costs, does not take up space, and has low maintenance costs.

  An object of the present invention is to provide a second liquid purification treatment means for carrying out a purification treatment using a first treatment unit A of a liquid purification treatment means for carrying out a purification treatment using a microorganism carrier chip inhabiting bacteria and a chemical and ceramics. This is achieved by an auxiliary system for a sewage treatment facility characterized by having a treatment unit B.

  As described above, according to the auxiliary system for sewage treatment facilities of the present invention, the first treatment unit A performs microbial treatment based on an anaerobic / aerobic environment, and the second treatment unit B allows chemicals and ceramics to be mixed. By effectively using the chemical treatment it has, the coagulation sedimentation process in the sedimentation tank required by the sewage treatment system using chemicals and the aeration process in the activated sludge method are unnecessary, and the first treatment Due to the synergistic effect of the unit A and the second treatment unit B, the remarkable effect of efficiently performing the sewage containing the pollutant by filtration, decomposition and extinction could be improved. For this reason, compared with the conventional system, it is extremely easy to design, manufacture and maintain the system by controlling the investment cost, drastically reducing the running cost, reducing the installation space, and combining the unit with various wastewater. And inexpensive.

A wood strip that is a microorganism carrier chip in a liquid purification treatment apparatus that performs microbial treatment after adding sewage in a liquid purification treatment means that performs purification treatment using a microorganism carrier chip in which bacteria of the first processing unit A live. At the same time as clogging occurs due to the adsorbing action of organic matter, the organic matter is reduced (decayed) by maintaining the optimum conditions while receiving the thermal energy of the spiral electric heater provided in the liquid purification treatment device. For 3 to 4 hours. At this time, the filtered treated water comes into contact with carbohydrates, fats, and proteins that are the main cause of the clogged pollutant substance, and is supplied with oxygen from the treated water to be oxidized, and the pollutant emits electrons. In other words, oxidation and reduction are performed simultaneously to become free energy. The higher the degree of contamination, the greater the free energy.
The relationship is shown by the following equation.
△ G ｀ = n ・ F ・ △ E ｀
However, △ G ｀ = free energy F = Faraday constant (charge amount of 1 mol electron = 23040 calories)
ΔE == Potential drop between electron donor and electron acceptor (V)
This free energy is used for phosphorylation of ADP (adenosine diphosphate), stored in the form of ATP (adenosine triphosphate), and subjected to an oxidized phosphoric acid reaction.

  Thereby, in the 1st processing unit A, aerobic energy is generated and it changes into an aerobic environment. As a result, proteins, fats and carbohydrates that are the main cause of pollutants are decomposed and eliminated. Microbial treatment is performed under such anaerobic / aerobic environment.

In the second purification unit B, in the liquid purification treatment means for performing purification treatment using chemicals and ceramics, the superporous silica (SiO ₂ ) material 2 is added with sodium hypochlorite as a chemical at a predetermined ratio. Liquid purification performed in the second treatment unit B by infusion with a pouring machine into a liquid purification treatment apparatus filled with a processing stone that has been processed and adjusted to a size of ˜25 mm and fired at 1300 to 1350 ° C. The treatment means is called chemical treatment, and when the chemical sodium hypochlorite is injected into the treated water, it reacts in the following process.
NaClO → Na ⁺ + ClO ⁻ ,
Since it is stable in an alkaline solution, it functions as a neutralizing agent for acidic sewage water that is formed by the fact that it cannot be completely digested and decomposed in the microbial treatment process of the first treatment unit A.

  Thus, the microbial treatment of reduction / oxidation can be performed by the auxiliary system for the sewage treatment facility. This is achieved by an auxiliary system for sewage treatment facilities that makes it possible to decompose and extinguish pollutants by this decay and decomposition function.

  FIG. 1 is a diagram showing a schematic configuration of a test apparatus for demonstrating the principle of the present invention. The entire apparatus includes a liquid purification treatment apparatus 4 in the first treatment unit A that performs microbial treatment, an injector 6 and a liquid purification treatment apparatus 7 in the second treatment unit B that performs chemical treatment.

  In the first processing unit A, clogging occurs due to the adsorption action of the wood chips, which are microorganism carrier chips inhabited by bacteria, and at the same time, the organic matter is provided in the liquid purification processing apparatus 4 that performs microbial treatment. By maintaining the optimum conditions while receiving the heat energy of the electric heater, the reduction (septic) action is performed, generating aerobic heat energy and changing to an aerobic environment. As a result, proteins, fats and carbohydrates that are the main cause of pollutants are decomposed and disappeared in 3 to 4 hours. Microbial treatment is performed under such anaerobic / aerobic environment.

In the second treatment unit B, the sodium hypochlorite as a chemical is treated with the treatment water 5 purified by the first treatment unit A, while the infusion drip is performed using the infusion machine 6 in the range of 5 to 60 mg / liter. Adjustment is performed and the liquid purification treatment apparatus 7 is sent. In the liquid purification treatment apparatus 7, hypochlorous acid as a drug added by the chemical adsorption action of processed stones that are processed and adjusted to a size of ₂ to 25 mm and calcined at 1300 ° C. to 1350 ° C. in a superporous silica (SiO ₂ ) material When soda serves as a reducing / oxidizing agent and performs an ion exchange function, a kind of amplification action is performed, and chemical treatments such as oxidation, reduction, and neutralization are effectively performed.

Table 1 shows a comparison of the final treated water 9 treated by the sewage treatment facility auxiliary system and the quality of the raw water 1 for each test item under the above conditions. The comparison data of each test item is not necessarily the same raw water and the same treatment condition, but all items show satisfactory results.

1 is a schematic diagram showing a system according to an embodiment of the present invention.

Explanation of symbols

A 1st processing unit B 2nd processing unit Raw water Water pump 3. Water pipe 4. 4. Liquid purification treatment device Treated water 6. Injector 7. Liquid purification treatment device 8. 8. Drain pipe Final treated water

Claims (6)

  An auxiliary system for a sewage treatment facility, comprising: a liquid purification treatment means for performing purification treatment using a microorganism carrier chip inhabiting bacteria, and a liquid purification treatment means for performing purification treatment using a drug and ceramics.   The liquid purification processing means using the microorganism carrier chip inhabiting the bacteria is provided with a liquid purification processing apparatus for performing microbial treatment, and the liquid purification processing means using the drug and ceramics is a liquid purification processing apparatus for performing chemical treatment. The auxiliary system for sewage treatment equipment according to claim 1, wherein the auxiliary system is disposed.   The microbial carrier chip inhabiting the bacterium is mainly composed of wood strips, and a wood strip and a spiral electric heater are used in a liquid purification treatment apparatus that performs microbial treatment. Item 3. An auxiliary system for sewage treatment equipment according to any one of items 1 to 2. The auxiliary for sewage treatment equipment according to claim 1, wherein a liquid purification treatment device for performing chemical treatment is arranged by using sodium hypochlorite for the chemical and silica (SiO ₂ ) material for the ceramic. system.   The auxiliary system for sewage treatment equipment according to any one of claims 1 to 2, wherein a size of 0.2 to 5 mm is used for the wood chips of the microorganism carrier chip in which the bacteria live. The size of the ceramic is processed adjust the silica ultra porous 2 to 25 mm (SiO ₂₎ material, any one of the claims 1-2, characterized by using a machining stone fired at 1,300 to 1,350 ° C. Auxiliary system for sewage treatment facilities as described.

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