JPS62244493A - Apparatus for recirculating and purifying water - Google Patents

Abstract

PURPOSE:To contrive water and energy conservation, by passing water through a bioreactor wherein bacteria comprising aerobic bacteria are deposited to carriers with aluminosilicate as a main constituent. CONSTITUTION:The contaminant in bath water 2 is removed by a strainer 5 while said water is sent to a filter 7 to remove the small solid substance in water. The water passing through the strainer 5 and the filter 7 is guided to a bioreactor 8 wherein a container 12 is packed with carriers 13 comprising natural stones based on aluminosilicate and bacteria 14 comprising aerobic bacteria propagate on the surfaces of the carriers 13 and naturally breed to hold a stable conditioned breeding state. The water from which an org. contaminant is removed is sent to a heat exchanger 9 to be returned to a bathtub 1. By this method, the purification of bath water can be maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a circulating purification device for domestic water, especially bath water.

[Conventional technology]

Bath water, body hair, dirt on living surfaces, fat, and white matter.

Turbidity increases due to the contamination of organic pollutants such as urine pigments, odorous substances, or bacterial cells, or inorganic pollutants such as dust, dirt, scale, iron rust, and hot water adhering to living organisms such as scale, iron rust, and hot water from equipment and piping. , resulting in the generation of odor and discomfort. For this reason, in commercial bathtubs where a large number of people take a bath, conventionally, as shown in FIG. 3, a strainer 5. A path through a circulation pump 6, an ill filter 7, and a heat exchanger 9 to reach the water tank 1 is connected by a conduit 3, and a device is provided to circulate and purify the bath water 2 in the direction of the arrow 4, to purify the bath water as much as possible. The reality is that efforts are being made to extend the period until replacement.

[Problem that the invention seeks to solve]

The above-mentioned conventional devices have a limited filtration capacity, are insufficient in removing pollutants and bacteria dissolved in bath water, and water quality gradually deteriorates. Therefore, bathing water cannot be expected to be used for a long period of time, and the water must be replaced at least once every 3 to 10 days. This high frequency of water exchange saves water and
Energy Conservation.

This was an extremely serious issue in terms of maintenance and management, such as reducing labor.

[Means for Solving the Problems] The present invention solves the above conventional problems and provides a water circulation purification device that does not require replacing bath water for a long period of time and allows comfortable bathing at all times. The purpose is to provide

FIG. 1 is a route diagram showing a water circulation purification device according to the present invention, from a bathtub 1 to a strainer 5, which are connected by a conduit 3. The bath IW1 passes through a circulation pump 6, a filter 7 and a heat exchanger 9.
A microbial reactor is interposed after the filter 7 during the route leading to the filter.

Contaminants in the bath water 2 are removed in a strainer 5 after large solid contaminants such as body hair or fibrous substances are removed.
It is sent to a filter 7 by a circulation pump 6, and small solid contaminants such as scale, earth and sand, iron rust, and hot water are removed. It is effective to use an inexpensive replacement filter made of cotton thread or chemical fiber wound around a cylinder as the filter material of the filter 7. The water that has passed through the strainer 5 and filter 7 is then led to the microbial reactor.

As shown in the enlarged cross-sectional view of Figure 2, the microbial reactor is
Container 12 with an inlet 10 and an outlet 11 at the bottom and top
It is filled with a carrier 13 made of natural stone and containing 1-aluminosilicate as a main component. Natural stones mainly composed of aluminosilicate are quartz porphyry or tuff (e.g. zeolite)
It is generally produced in abundance, and specific examples include zeolite, which is a crystalline aluminosilicate containing alkali and alkaline earth metals. These materials have strong resistance to erosion and disintegration in water, and have physical adsorption and ion exchange capabilities, and when suspended in water, the components that slowly elute from the suspension provide a suitable field for the physiological activity of microorganisms. Microorganisms 14, including aerobic bacteria, proliferate on the surface of the phase body. The microorganisms that have settled on the surface of the carrier proliferate naturally and maintain a stable habituation state.

The microorganism immobilization carrier filled in this microorganism reactor is
The passage of one hour is based on the mutual dependence between organic pollutants in the water being adsorbed by adsorption capacity and ion exchange capacity, propagation on the surface, and natural proliferation as friendly microorganisms oxidize and digest them. Together with this, it produces a stable purifying effect and maintains its purifying ability over a long period of time. The water from which organic contaminants have been removed in the microbial reactor is sent to the heat exchanger 9 and returned to the bathtub 1 in order to compensate for the amount of heat dissipated during the circulation process.

The microorganism-immobilized phase body is designed to maintain its shape stably for a long period of time without becoming atomized or disintegrating due to erosion etc. in water.
Those having a Mohs hardness of 3 or more and a grain size of 4 to 20111 are effective. In addition, the water flow in the microbial reactor is such that water reaches the surface of the filler on average without forming a specific flow path.
: The flow is upward from the lower end inlet 10 to the upper end outlet 11 to ensure multiple contact, and the flow velocity is such that the fixation of microorganisms can be stably maintained without the filling material being moved by the water flow, and that it will hinder the activity of aerobic microorganisms. In order to maintain an oxygen supply free of water, etc., at the outlet of the reactor,
Good results can be obtained if the value is adjusted within the range of 1.

〔Example〕

A bathtub IK with a capacity of 2-, a strainer 5 made of a cylinder having a large number of circular circulation holes, and a circulation pump 6 of 1
A general-purpose horsepower pump was used. The filter 7 is a replaceable filter with a nominal diameter of 75 microns and has a filtration area of o.
, sfi'' was set. At the beginning of the microbial reactor, 5 pieces of quartz porphyry with a grain size of about 10 pieces was placed in the container.
The carrier was filled with 0f to allow aerobic microorganisms that digest organic contaminants to grow naturally on the surface of the carrier. The heat exchanger 9 was of an electric heating type, and the entire path was connected with a steel pipe having a nominal diameter of 40A. The bath water 2 is circulated through the above-mentioned path, and in particular, the flow of water in the microbial reactor, q, is an upward flow, and the flow rate at the reactor outlet is 4.
It was adjusted to a range of ~12 lines.

The following table shows the results of water quality tests over time in this example.

As is clear from the table showing the results of the analysis of bathing water, the water quality has hardly changed in the 2.5 years since the beginning, despite the cumulative number of bathers exceeding 160,000, with excellent transparency. There was no strange odor or taste. The pH was also close to neutral, and the coliform count was negative. During the above process, the fiber-wound filter was replaced only once every four months, and results satisfying the standards of the Water Supply Law were obtained. Based on these facts, comparison 1. This reduced water and energy costs by more than half.

[Action and effect of invention]

According to the purification device of the present invention, the strainer 5 and the filter 7
When the water passes through the microbial reactor, pollutants and bacteria dissolved in the bathing water that could not be captured by the previous route are adsorbed and purified, and aerobic microorganisms naturally proliferate due to the removal. By repeating this action, the bath water can always be kept clean. Therefore, by regularly replacing the filter of the filter and periodically inspecting the circulation pump, there is no need to replace the bath water over a long period of several years, resulting in significant water savings, energy savings, and a reduction in cleaning labor. Economic effects can be obtained. This device does not cause any pollution, is particularly effective when installed in areas with water shortages, and has a high degree of social contribution. In addition, in order to remove Escherichia coli, which requires attention when purifying bath water, after the microbial reactor is used,
It is more effective to provide a layer of microbicidal metal strips or powder, such as copper, @, nickel, or alloys thereof.

In this specification, the circulation purification system pressure for bath water has been explained, but it is also used for purification and regeneration of fish tank water or water for hydroponic cultivation, as well as secondary treatment in the purification process of industrial wastewater and domestic wastewater.
Of course, this device can also be used for tertiary processing.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing a circulation path of the water circulation purification device of the present invention, and FIG. 2 is an enlarged sectional view of the same essential parts. FIG. 5 is a system diagram showing the water circulation path of the conventional device. 2...Water, 5...Strainer, 6...Circulation pump,
7... Filter, Dan... Microorganism reactor, 9... Heat exchanger, 13... Carrier, 14... Aerobic microorganism. Figure 1 Figure 2 Figure 3 Procedural amendment (method) % formula % 2 Name of the invention Water circulation purification device 3, Relationship with the person making the amendment Patent applicant address 1-6 Okubo, Shinjuku-ku, Tokyo Telephone number 21 (03
) As per 202-2121 (no change in content)

Claims (1)

[Scope of Claims] 1. In an apparatus for circulating and purifying water from a water tank to the water tank through a strainer, a circulation pump, and a filter, the above path includes: (a) a carrier mainly composed of aluminosilicate; A microorganism reactor filled with a microorganism immobilization carrier that allows microorganisms consisting of aerobic bacteria to implant and (b) allows the microorganisms to grow naturally and maintain a stable acclimated state is interposed. Water circulation purification device. 2. Claim 1, wherein the microorganism immobilization carrier in the microorganism reactor has a Mohs hardness of 3 or more and a particle size of 4 to 20 mm.
The water circulation purification device described in section. 3. The flow of water in the microbial reactor is an upward flow, and the flow rate at the reactor outlet is [circulating water amount x (2 to 6)] m^3/H_
The water circulation purification device according to claim 1 or 2, which falls within the range of r. 4. The water circulation purification device according to claim 1, 2 or 3, wherein a layer of metal strips or powder having a sterilizing effect is provided after the microbial reactor.