JPH0283095A - Method for removing contaminants in excretion or sewage by utilizing single cell chlorophyceae of genus chlamydomonas to obtain drinking water - Google Patents

Abstract

PURPOSE:To cope with every amount of waste water and to perform efficient purification by removing the suspended substances in waste water and, after sterilizing the waste water under heating, treating the same in a growing tank of R. Sager strain 95 being single cell chlorophyceae of the genus chlamydomonas. CONSTITUTION:Living waste water such as excretion or sewage is sent to an IN/OFF digester to remove suspended substances by sedimentation while the filtered water is sterilized by ultraviolet rays and ozone gas. Thereafter, this inflow water is allowed to pass through a solar system to be heated up to 24-26 deg.C. Further, this heated water is sent to a growing chamber of R. Sager strain 95 being single cell chlorophyceae of the genus Chlamydomonas and the contaminants thereof are sorbed by the chlorophyceae to purify the water and, thereafter, the purified water is filtered. As mentioned above, by utilizing Chlamydomonas propagating permanently, waste water is purified inexpensively and easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for sorbing and removing pollutants such as human waste and sewage using single-celled green algae of the genus Chlamydomonas, and at the same time converting the pollutants into drinking water.

[Prior art] The treatment of pollutants in human waste and sewage, that is, domestic wastewater, has traditionally been carried out mainly by biological methods, such as activated sludge method, trickling filter method, rotary plate contact method, and contact flushing. However, it is limited to secondary treatment in conjunction with pretreatment such as sedimentation and putrefaction, and a more advanced and cheaper treatment method is desired due to its actual wastewater purification ability.

[Problems to be Solved by the Invention] The method for treating human waste and sewage pollutants according to the present invention is characterized by the vigorous reproductive ability of single-celled green algae of the genus Chlamydomonas under certain environmental conditions and the excellent collection of pollutants such as phosphorus and nitrogen. It is an innovative method for treating polluted wastewater that utilizes adhesion and can be applied to any scale of wastewater volume, either as an alternative to conventional treatment methods or as an advanced treatment method that complements conventional treatment methods.

The unicellular green alga of the genus Chlamydomonas used in the present invention is Chlamydomonas reinhardi (Chlamydomonas reinhardi).
orQonas Re1nhardii), green alga fdA
(Chlorophyceae) Chlorophyceae f
Vol vocales), stock name Al Sakar
Strain 95 (R, Sager 5train 9
5) is a type of unicellular green algae with photosynthetic pigments and whip-shaped flagella, and is ATCC No. 18302. Hereinafter, it will be abbreviated as Chlamydomonas.

[Means for solving the problem] 1. In a method for removing filth such as human waste and sewage using unicellular green algae of the genus Chlamydomonas, ■) Introduction! V: Precipitation and removal of turbid matter; 2) F-separated polluted water is highly oxidized to remove bacteria and virus pathogens using ultraviolet rays and ozone gas; 3) Inflow water is heated to a solar system (24°C to 26°C).
4) Chlamydomonas unicellular green algae enters the growth tank of Al Sager Strain 95, where the pollutants are absorbed by the green algae, and 5) P is separated. A method for removing substances and obtaining drinking water using Chlamydomonas spp. unicellular green algae.

2. The water containing pollutants is passed through several ports of a growth tank of unicellular green algae of the genus Chlamydomonas R Sager Strain 95. method to remove water and obtain drinking water.

3. The method for removing pollutants such as human waste and sewage using Chlamydomonas spp. unicellular green algae and obtaining drinking water according to claims 1 and 2, wherein all steps are performed automatically.

The secondary treatment of domestic wastewater that is currently being implemented is insufficient in terms of environmental conservation of water bodies, and is causing further environmental deterioration. In addition to secondary treatment, high-level treatment using chemical methods is not technically possible or is not currently available due to cost issues.

The above-described method of draining domestic wastewater into a culture tank for Ramitomonas and removing pollutants according to the present invention is a system that utilizes Thalamydomonas, in which Chlamydomonas has an extremely excellent ability to adsorb pollutants, and moreover, can proliferate permanently. It is.

[Effectiveness] Cochlamydomonas is highly reproductive under certain environmental conditions (nutrients, light, carbon dioxide, temperature), and when domestic wastewater to be treated passes through its suspension, single-celled algae can It has a strong ability to adsorb pollutants and can be easily removed.

Examples will be described below, but the present invention is not limited thereto.

[Example] Example 1 Human waste, sewage, etc. are passed through a pipe using two pumps into an lnhoff Digestester.
), where the suspended solids settle and are largely removed.The water then passes by gravity through a filter where it is exposed to air and suspended particles are removed by settling.Then it is purified. The water enters the filter and is pumped to the next treatment plant. It is treated with ultraviolet light and ozone gas to reduce bacterial and viral contamination. After this preliminary treatment, the water is transported by gravity to an ozone-decayed water storage chamber. The water then passes through a solar system (temperature 24°C to 26°C) from the ozone decay chamber to the Chlamydomonas growth waste collector, or directly into the Chlamydomonas growth waste collector. Chlamydomonas growth proceeds to the contaminant sorption device. The direction of water flow is determined by the temperature of the contaminated water. The water passing through the solar system passes through a microporous filter where particles up to 300 microns are removed. Microporous filter is equipped with an automatic backflow device to remove collected compounds.

Incoming water is routed through a solar system and collected in a 10,000-gallon water storage tank. The heated water flows by gravity to the Chlamydomonas growth pollutant sorber where the water is used to grow Chlamydomonas.

Water treated with Chlamydomonas is pumped to a treatment plant where Chlamydomonas is removed by filtration. Water free of Chlamydomonas flows from the filter to a clean water storage tank. The first filter is backwashed with water from the clean water storage tank, and the Chlamydomonas-laden backwater is discharged into the evaporated oil.

The above facilities will be automated.

The operation linkage is a flashing method using a switch.

It is connected to a flashing method that controls all operation interlocking, and as a result,
If one operation stops working, the entire device will stop.

The pump installed in the last purifier indicates a low water standard. It is activated by the signal of the reference monitor of the Chlamydomonas reactor. At the same time, a second pump inside the ozone decomposition storage chamber is activated, and this pump pumps water for Chlamydomonas growth.
Directly to a sorption device or through a solar system.

This signal also determines whether or not to heat the requested water. The functioning of the solar system is determined by the temperature of the panel surface, and when various temperature switches are activated in the pump chamber, water flows through the solar system and then to the Chlamydomonas sorption device.

If the differential switch is not activated, water will not flow into the Chlamydomonas sorption chamber until activated by temperature.

In summer, the solar system is bypassed manually and water flows directly from the ozone decomposition water storage chamber to the Chlamydomonas reactor. When the Chlamydomonas reaction sorption device fills with water, the signal from the reference monitor stops and the end-of-limb purifier and ozone decay storage chamber pumps stop.

Filtration of Chlamydomonas-treated water continues around the clock.
Operated independently of external water flow system.

FIG. 1 shows the relationship between the total number of E. coli in the Thalamydomonas reaction and sorption device and time.

After about 4 days, most of the E. coli bacteria were gone.

Chlamydomonas growth not only produces high quality wastewater but also produces high quality biomass.

Table 1 shows the chemical composition of Chlamydomonas grown in polluted water, and Table 2 shows the bacteriological analysis values of Chlamydomonas grown in polluted water.

Table 1 Chemical composition of Thalamydomonas Dry weight % (grown in sewage) Protein 50-55 Lipid
4-8 carbohydrates
20-30 ash 4-8 thin 3 moisture
3-6 Table 2 Bacteriological analysis of Chlamydomonas grown in wastewater Aerobic bacteria 2900 cells/g
Yeast and filamentous fungi 40 cel
ls/q E. coli < 3
cells/g Coagulant-activated Staphylococcus Not detected < 3 cells/(1 Salmonella enterica linden-aldrin pond Chlorinated carbohydrate polychlorobiphenyl (highly toxic) Not detected Not detected Not detected None 0.159 ppl O, 17021)ill <0. 001 pl)1 <0.04 ppHl Note 2 Analysis was performed after exposing Chlamydomonas to short-wave radiation for 90 seconds.

Tables 3, 4, and 5 show BOD, COD, and other analytical values for treated sewage in a certain area.

Sample A Table 3 Analysis BOD BOD Escherichia coli ρI ( 1 1g/'' Color + y/T (lonl 8.0 Sample B Sample C Table 4 Analysis OD OD Escherichia coli H Table 5 Analysis OD Escherichia coli ■/1 19 Colonies/1001 7 .8 ■/, I! < I Co1ony/100+nl Note: The analytical values required by water quality control regulations are as follows.

[Effects of the invention] 1. It is much cheaper than conventional methods for removing pollutants from domestic wastewater.

2. Phosphorus, nitrogen, and other substances can be removed almost 100% by replacing the culture tank with fresh unicellular green algae of the genus Ramitomonas at regular intervals (usually 2 hours).

3. Single-celled green algae of the genus Chlamydomonas can be produced without limit, so sorption resources can be generated without limit.

[Brief explanation of the drawing]

Figure 1 shows the total number of E. coli versus time in the Chlamydomonas growth tank. OD OD Solid matter that can colonize Escherichia coli H rgan 30 ■/J or less 125 ■/, 11 or less 0.5 M/j or less sms/1001 or less 6.6 to 8. (+

Claims (1)

[Claims] 1. In a method for removing pollutants such as human waste and sewage using unicellular green algae of the genus Chlamydomonas, 1) first, suspended matter is sedimented and removed, and 2) the filtered polluted water is exposed to ultraviolet light. and ozone gas to highly oxidize and remove bacterial and viral pathogens; 3) the inflow water is heated by passing through a solar system (24°C to 26°C); 4) Chlamydomonas unicellular green algae Earl Sager Strain 95 into the growth tank,
A method for removing pollutants from water such as human waste, sewage, etc. using unicellular green algae of the genus Chlamydomonas and obtaining drinking water, the method comprising: sorbing pollutants onto the green algae; and 5) filtering the pollutants. 2. Using unicellular green algae of the genus Chlamydomonas to remove pollutants from water such as human waste and sewage according to claim 1, characterized in that the water containing the pollutants is passed through a growth tank of unicellular green algae of the genus Chlamydomonas Earl Sager Strain 95 several times. How to get drinking water while removing it. 3. The method according to claim 1 or 2, wherein all the steps are performed automatically, using Chlamydomonas unicellular green algae to remove pollutants from river water, including human waste, sewage, etc., and to obtain drinking water. Method.