Liquid purification or separation – Processes – Using magnetic force
Patent
1988-02-23
1990-06-12
Jones, W. Gary
Liquid purification or separation
Processes
Using magnetic force
210702, 210714, 210724, 210743, 210764, 210800, C02F 148, C02F 152
Patent
active
049330888
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a method of an apparatus for treating water adopted for, for example, purification of various waters including agricultural effluent, domestic waste water, the water of a closed water area, the water of a fish pond (algae-containing water), mixed water of domestic waste water and sea water, sea water and underground water, and softening of hard water. More particularly, the present invention relates to a method of and an apparatus for treating water characterized in that a proton releasing substance and/or a magnetic field are provided for a water being treated, while controlling the amount of proton released and/or the strength of the magnetic field as control indicators so as to remove, reduce, vanish or deproliferate the cations, a part of the anions, eutrophicated substances, chlorophyll, algae, bacteria and the like which are contained in the water, or to remove alkali earth metal ions chiefly consisting of calcium ions and magnesium ions from the water to soften hard water.
BACKGROUND ART
Contamination of closed water areas including lakes and marshes and inland seas by phosphorus and eutrophicated substances has now become a big problem not only in Japan but also all over the world. It is well known that the progress of such contamination is derived from the eutrophicated substances contained in the agricultural effluent, domestic waste water, etc., which flow into the lakes and marshes and inland seas and the lowering of the water level of the water area due to the development of coasts.
Accordingly, techniques for restraining eutrophicated substances from flowing into closed water areas, for example, concentrated treatment of city life type domestic waste water, agricultural community waste water and top soil eluting substances produced by agricultural effluent and rain water, and various techniques for maintaining and enhancing the self purification capacity, for example, techniques of removing deposited sludges and algae, charging chemical substances such as lime and blowing oxygen or air into the water have been carried out.
As a method of softening hard water, a method of depositing alkali earth metals (e.g., CaO) by storing the hard water for a certain period, removing the alkali earth metals by distillation or with an ion exchange resin, and a method of depositing these metals by boiling and using the supernatant liquid are known.
These prior arts, however, involve the following problems: in the case of using an absorbent, flocculating agent, neutralizing agent, oxidizing agent, reducing agent, etc., since secondary contaminating substances are mixed into the treatment water and a large amount of sludge is generated, it is necessary to remove them; and in the case of carrying out other techniques, even if a large sum of equipment cost and running cost is invested, satisfactory effects have not yet been produced.
In a method of storing hard water for a certain period for softeining it in the prior art, if the concentration of the alkali earth metals dissolved in the water is high, the pH of the water becomes weakly alkaline in most cases. Therefore, the water is allowed to stand for a long time to generate and deposit calcium hydroxide or the like, but the behaviour is unstable and, further, with the reduction in the concentration, the amount of deposit produced becomes smaller. On the other hand, in the case of softening water by distillation, with an ion exchange resin, or by boiling, the cost is raised, so that the treatment of a large amount of water is difficult.
DISCLOSURE OF INVENTION
Accordingly, it is a primary object of the present invention to provide a method of and an apparatus for treating water which are capable of removing, reducing, vanishing or deproliferating the cations, a part of the anions, eutrophicated substances, chlorophyll, algae, bacteria and the like which are contained in a water being treated by flocculating them, making them absorbed to flocs or making them colloidal.
It is another object of the present in
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Jones W. Gary
Kabushiki Kaisha Astec
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