JPH02268884A - Method for purifying sewage of river, seashore, pool or the like - Google Patents

Abstract

PURPOSE:To obtain the sewage purifying method excellent in capacity, profitability and industrialization by mixing a processing material consisting essentially of the natural fossil shells refined to specified grain size into sewage to adsorb and flocculate the materials in the sewage and further applying ion exchange and neutralization to purify the sewage. CONSTITUTION:The natural fossil shells contg. various nekton, plankton, algae and seaweeds consisting of calcareous materials, silicates, etc., are crushed into a small-grain or coarse-sand crude ore. The crude ore is air-dried, then dried at 120-450 deg.C with hot air through a rotary kiln A and a cooler B, refined and granulated. The grains are further air-classified into the grains having 0.1-50mum diameter through a ball mill C and a cyclone D. The obtained processing material is mixed into the sewage of rivers, seashore, pool, etc., and then ion exchange and neutralization are applied to purify the sewage. As a result, the sewage purifying method excellent in capacity, profitability, industrialization, etc., is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for purifying sewage from rivers, beaches, swimming pools, etc. [Prior Art 1] Conventional methods for purifying sewage from rivers, beaches, pools, etc. have long used chemicals and the like. Generally, so-called chemical purification methods were used. However, in recent years, when flushing away drips from factory wastewater and other sources has come under public scrutiny as a pollution problem, natural substances have come to be used in the treatment of these sewage1.
For example, various harmful substances contained in factory wastewater and sewage are removed using coral fossil limestone produced in the Okinawa Islands and Tokunoshima region, and natural shell fossils buried in Hokkaido and the Muon Peninsula region. Methods have been developed to do so. In particular, as disclosed in JP-A No. 51-141457 (Method of Improving Water Quality Using Fossil Shells), ``After crushing natural shell fossils to a rough sand-like consistency, the molecular structure is broken down. Heat treatment is performed to remove crystallized water contained within a certain effective diameter, and the product is processed into a fine powder of 200 mesh or more, and the product is sprayed into the water to be improved (treated). By adding ferric chloride or hydrochloric acid as necessary, adsorption, ion exchange, and physical and chemical actions are promoted in parallel, and at the same time coagulation and precipitation occur rapidly, resulting in sugar content, including drinking water. sediment,
Lignin, blood, printing ink, paint, cutting oil, gasoline, diesel oil, etc. contained in sediment wastewater or factory wastewater,
Quickly improve (process) single or mixed states of harmful substances such as kerosene, heavy oil, mercury, cyanide, cadmium, chromium, lead, copper, iron, PCBs, cooking oil, detergents, urine, etc., and eliminate odors. In order to remove the supernatant water after treatment, the supernatant water becomes mineralized so that it can be reused as drinking water, and the precipitate can be disposed of as mere soil. "A method for improving water quality using fossils" (claims), but this conventional method did not have good effects and lacked practicality depending on the components of the fossil shells and the method of refining them. . In addition, the main components of shell fossils are destroyed due to the mixing of cupric chloride and hydrochloric acid, causing various problems. Also, what are the conventional refining and processing methods for natural shellfish fossils? It is common to use methods such as lime or sand grains. In other words, shell fossilized crude ore that has been roughly pounded in advance is dried with hot air using a hot air dryer, which has traditionally been used in the production of lime and sand grains, as well as metal powder equipment, which is often used in the production of iron powder and copper powder. A common method is to grind it into a powder using a powder and process it into M. According to this conventional method,
Because each device and mechanical device is manufactured for a specific purpose, it is not suitable for producing fossil shellfish, which contains many components, and reduces its commercial value. In addition, the manufacturing method was extremely primitive and storage management could not be systematized, making it unsuitable for long-term preservation, which made commercialization difficult. Many problems arose. However, not only are there many chemically and academically unexplored fields for all of these methods, but there are also many unresolved fields regarding their usage and specific processing methods.
Until now, it has not been possible to put it into practice or commercialize it [Problem to be solved by the invention 1] In order to solve this problem, it is necessary to use fossil shellfish, even natural shellfish fossils, which contain components suitable for improving water quality. In addition, it is necessary to refine and process this suitable shellfish fossil into a microscopic diameter that can be used as a treatment substance for water quality improvement, and this is the problem that the present invention aims to solve. In particular, the greatest problem of the present invention lies in the attempt to treat with natural substances what was conventionally treated with chemical substances. [Means for Solving the Problems J] The present invention was developed in order to solve the problems as described above. Shellfish fossils are crushed into small grains or coarse sand-like crude ore, dried naturally, and dried with hot air at a temperature of about 120°C to 450°C to refine them into powder, and further air classified to obtain approximately 0.1
The main component is a treated substance purified to a particle size of about 0 μm to 50.00 μm, and the treated substance is mixed into sewage from rivers, beaches, pools, etc. to effectively adsorb and coagulate substances in the sewage, and further A waste water purification method characterized in that waste water is purified by ion exchange and neutralization. [Function] While conducting research on methods for purifying sewage and other sewage for many years, the present inventor discovered that natural shellfish fossils buried in the so-called Muon Peninsula in the Ishikawa and Toyama prefectures can be used to improve water quality. He discovered that it was suitable and succeeded in developing the technology. In other words, the shellfish fossils buried in this region mainly contain calcium carbonate and carbon dioxide, which have adsorption and aggregation properties by neutralizing harmful substances contained in wastewater, etc. This is because many experimental results have shown that water can be recycled as neutral industrial water or drinking water due to its ion exchange properties. Fossil shells with these characteristics are currently buried only in the Oil-bearing Peninsula region, and according to the excavation survey, this composition was mainly formed as a result of the physiological actions of animals; It is said that the remains were mechanically sorted under the sea and then deposited on the ocean floor. In particular, the natural shell fossils used in the present invention were mined from fossil shell veins buried in the Toyama Prefecture region. The shellfish fossils buried in this region were mainly formed as a result of the physiological actions of animals, and it is said that these remains were mechanically sorted and sorted under the sea before being deposited on the ocean floor. There is. In other words, these fossil shells are made up of various nekton (shells, fish), placton (microorganisms), algae, seaweed, etc. made of calcareous or silicic acid, etc., which were buried alive and deposited due to the movement of the earth's crust. To date, approximately 80 million years have passed (Miocene Epoch of the Neogene period), it has become clear that these seafoods and organic matter have not become fossils, but have become crystals with tactile properties. It has been revealed. Due to these factors, calcium carbonate, its main component, is a collection of extremely fine particles secreted from proteins, and is in the form of aragonite C. A distinctive feature of shellfish fossils in this region is that they are much more active than those formed by stones. The results of the component analysis conducted by the Japan Fertilizer Inspection Association of the natural shellfish fossils from the Toyama Prefecture region refined into powder are as follows. Moisture (H2O2 Silicic acid total 14 (Si021 Magnesium total 1:jl (llgol) Total amount of lime (Ca11 Ignition loss Iron oxide (Fe2031 Oxidation (A1203) [Example] % 1.05 18.42 0.80 40. 14 32.66 1.55 0.90 An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 shows an overview of the method for refining and processing natural shellfish fossils of the present invention. First, It is mined from the vein layer where natural shell fossils containing various nekton, plakton, algae, and seaweed components made of calcareous and silicic acid are deposited and crushed into small grains or coarse sandy coarse ore. One example in which fossil shells are dried and crushed through a rotary kiln A and a cooler B, and further crushed into powder through a ball mill C and a saclone D to be micro-refined to a particle size of about 0.10 μm to 50.00 μm. Now, rotary kiln A, cooler B
, a ball mill C, and a cyclone D are used, but any device may be used as long as the shellfish fossil product of the present invention can be obtained through this processing step. The particle size distribution measurement results obtained in this example are as follows, and the data results are as shown in the graph of FIG. CH particle size (μm) Cumulative (%) Frequency (%)1
0.17 2 0.24 3 0.34 4 0.43 5 0.66 6 1.01 7 1.69 8 2.63 9 3.73 In 5.27 11 ? , 46 12 10.56 13 14.92 14 21.10 15 29.85 16 42.21 Summary data DV O, 3373 10% 1.01 50 pieces 5,13 0.1 0.3 0.5 1.3 4.9 10.1 18.0 28.7 39.8 51.1 66.0 79.0 88.3 97.0 100, Mouth 100.0 0.1 0.2 0.2 0.8 3. 6 5.2 7.9 1O17 11.1 11.3 14.9 13.0 9.3 8.7 3.0 0.0 90% 16. t. MY 6.80 (:3 2.389 The above data are measured values obtained under the following measurement conditions. Sample name (TD-1) KArKASEKI lot k (ID-2) (B) Measurement date and time 01 /10/86-16:20 Measurement range 0.12-42.2 RUN No.
l Mouth 0 measurement time (seconds) 60 DV... Unitless sample input amount MV --- Average temperature of deposition weight CS --- Specific surface area One treatment substance of the present invention The results of the processing experiment using the following are as follows. Actual amount of untreated sewage input into the experimental water tank for treatment of sewage flowing into the sewage treatment plant from the factory complex 11) (Water depth: 1 m) Toxic substances contained in untreated sewage Normal hexane phenol cyan cadmium lead chromium zinc copper Odor of untreated sewage with manganese iron PH55 of untreated sewage B OD of untreated sewage 36 ppa + visibility of untreated sewage PH85 after 72III overturning stirring Amount of shellfish fossil fine powder input: 20Kg Amount of ferric chloride input: 4500cc Shellfish Stirring time after adding fossil fine powder and ferric chloride
Time from stopping stirring for 5 minutes to completion of coagulation and precipitation: Approximately 60 minutes Supernatant liquid after completion of coagulation and precipitation PH72 B OD after completion of coagulation and precipitation 132 ppm Transparency after completion of coagulation and precipitation 40C1+m or more Supernatant liquid after completion of coagulation and precipitation Extraction test of harmful substances detected and contained in sludge (Odor after completion of coagulation and sedimentation) I was able to confirm it completely. (2) Furthermore, in order to rapidly promote the aggregation effect. A small amount of cupric chloride was injected. The results of this experiment show that the harmful substances detected at the time of inflow have been treated to a state where they are almost undetectable, the pH is neutral, the BOD removal rate is over 60%, and the visibility has increased from 72 mm to over 400 mm. was purified. 11"1 Amount of industrial water input into the experiment water tank for treatment experiment of red rust contained in industrial water 11) (Water depth 1 ml) Ingredients of harmful substances in the treatment experiment Iron (red rust) PH65 before the treatment experiment Transparency before 511I11 Amount of shellfish fossil fine powder input: 20Kg Input amount of ferric chloride: 4500cc Stirring time after charging shellfish fossil fine powder and ferric chloride
Time from stopping stirring for 5 minutes to completion of coagulation and precipitation: Approximately 50 minutes Supernatant liquid after completion of coagulation and precipitation PH74 Transparency after completion of coagulation and precipitation 400m+a or more (reference) +11 After completion of treatment, visual inspection of the inside of the water tank revealed that the water depth was 1 We were able to observe the state of precipitation at the bottom of the meter. (2) A small amount of ferric chloride was injected to rapidly promote the flocculation effect. From the results of this experiment, industrial water with a transparency of 5 mm can be purified to a transparency of more than 400 mm.
Moreover, the pH after treatment was neutral. [Effects of the Invention] The present invention is configured as described above. It is possible to purify sewage from rivers, beaches, swimming pools, etc. without using any chemicals, and not only can secondary pollution be prevented, but the water after treatment can be reused and used for treatment. Since the substance is a natural product, it can be said that it is a method of purifying wastewater that is far superior to conventional methods from all aspects such as processing capacity, economy, and business efficiency. In addition, the present invention provides various nektons made of calcareous material, silicic acid, etc.
Natural shell fossils containing components of placton, P11, and seaweed are crushed into small grains or coarse sand-like coarse ore, dried naturally, and then dried with hot air at about 120°C to 450°C to be refined into powder. Since it is air classified and purified to a particle size of about 0.10 μm to 50.00 μm, the optimal treated material can be obtained as shellfish fossils for wastewater purification.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram showing the processing steps of the method of refining and processing natural shellfish fossils of the present invention, and FIG. 2 is a distribution graph showing the measured values of products obtained in Examples of the present invention.

Claims (1)

[Claims] (1) Natural shell fossils containing components of various nektons, plaktons, algae, and seaweeds made of calcareous and silicic acids are crushed into small grains or coarse sand-like coarse ore, dried naturally, and heated to about 120°C to 450°C. Dry with hot air to refine into powder, then air classify to approximately 0.10 μm.
The main component is a treated substance that has been purified to a particle size of about 50.00 μm, and the treated substance is mixed into sewage from rivers, beaches, pools, etc. to effectively adsorb and coagulate the substances in the sewage, and further ionize. A method for purifying sewage from rivers, beaches, pools, etc., which purifies sewage through exchange and neutralization.