Liquid purification or separation – Flow – fluid pressure or material level – responsive – Diverse sensing means
Patent
1997-08-25
1999-03-30
Hruskoci, Peter A.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Diverse sensing means
210117, 210203, 210205, 210258, 210262, 210266, 210282, 210290, C02F 132
Patent
active
058883827
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This invention concerns a special subsequent purification of water which has undergone a pretreatment through filter bags/sacks.
It is known that purification of waste water such as grey and black water can be performed in places where the local earth masses satisfy the requirements of the authorities.
Houses and especially cabins are often situated in areas where the discharge of waste water into local earth masses cannot be permitted. The majority of existing cabins in this country are built in such areas.
The invention therefore comprises a special purification method which takes place inside a large container, which is constructed with a central pipe around which are built up in layers various types of purification media which vary in grain size, weight and purification capacity, etc.
The water purified by the filter bag technique is introduced into the top of the large container and is evenly distributed by means of spray nozzles over the top layer of the added purification medium.
The water undergoes a mechanical, chemical and biological purification in several layers of built-up purification media and is collected on the bottom of the container, where a slightly more coarse-grained purification medium is preferably added.
The water is then passed under or through perforations in the said central pipe in which there is inserted a pump which lifts the now purified water up for further treatment in a U.V. treatment apparatus for sanitation before it continues for re-use in, e.g., water closets or it can be employed for watering purposes in gardens, market gardens and agriculture. Any surplus purified water can also be conveyed to an arrangement for discharge into the ground.
The top part of the central pipe is a removable pipe part, where the U.V. treatment apparatus is installed, preferably together with pipes down to the water pump which thus remains near the bottom of the container.
The container is preferably provided with gradations whose diameter increases down towards the middle. In the lower edge of the central area there is provided a gripping section for handling the container. The lower part is then provided with gradually decreasing diameter down towards the bottom. The tank with the described shape can withstand high external pressure and is therefore well suited for burial in the ground.
The invention will be of great importance, especially in areas of scattered housing where purification according to present day guidelines cannot be recommended. The invention will further be of relevance where it will be too expensive to lay pipelines up to municipal drainage networks. In addition to this the invention can reduce water consumption by 20-30% due to the fact that the purified water is used as flushing water in water closets. The savings increase further if the water is used for watering during the summer months. This is the critical time with the greatest consumption of water, and in the summer time the savings can be as high as 50%.
The invention can be implemented in several variants and the attached drawing illustrates an embodiment in which the numeral 1 in the drawing indicates the actual container. 2 indicates the feed-in pipe for water which has undergone a first purification process with separation of solid and liquid particles. The water passes to distribution nozzles 3 where it is sprayed and distributed evenly over the uppermost filter medium 4. From there the water is purified through several layers of filtration masses of varying types to the bottom of the container 1, where it is collected in the bottom of a central pipe 5 through opening 15. In the central pipe there is inserted a pump 6. This transfers the purified water to a U.V. treatment unit 9 including a U.V. lamp where the water is sanitated. In the central pipe 5 there are introduced cables from relays and connection boxes to level sensors 7. At the top in a preferably removable part 8 of the central pipe there is installed a U.V. radiation unit 9 with outlet pipe and tap 10 f
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K.o slashed.ler Jens Christian
Ringdal Lars
Westlie Lars
Bakelittfabrikken A/S
Hruskoci Peter A.
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